Patent Grant
12116263
The present invention generally relates to the field of fluid delivery to one or more fluid consuming assets, and more particularly, to a method and system for efficiently and safely delivering fuel to a fuel consuming asset on demand.
In many applications, it is often desirable to deliver fuel to a fuel consuming asset. The fuel consuming asset may be remotely located from the fuel source necessitating the need for transport and delivery of the fuel in a safe and efficient manner.
Typical prior art fuel delivery systems have several shortcomings a non-exhaustive list of which follows. For example, manual delivery of fuel to the fuel consuming assets (one at a time) can be time consuming resulting in expenditure of valuable time and resources. Moreover, due to the manual nature of the fuel delivery process one or more assets may be missed in the process, especially in performance of a complex job at a job site which may involve the use of a plurality of fuel consuming assets.
Further, the prior art fuel delivery systems lack appropriate safety mechanisms and are prone to a risk of spills and leaks which are environmentally hazardous and can potentially cause fires at the job site. For example, a leak from the hose 108 can lead to fuel spillage since although shutting off a valve at the fuel tank 104 may stop fuel flow from the fuel tank 104 to the hose 108, the existing fuel in the hose 108 will continue to spill until the hose 108 is emptied. Additionally, valuable time and resources must be used to replace the hose 108 with another hose and to clean up the spilled fuel, not to mention the corresponding risk of fires at the job site. Operator error while dispensing fuel can likewise result in leaks and spills.
Additionally, depending on the nature of the job site, the manual delivery of fuel can be difficult resulting in tripping, falling or personal injury to the individual(s) delivering the fuel at the job site. The fact that personnel would have to monitor the fuel level in each fuel consuming asset throughout the refueling process in order to avoid over filling a fuel consuming asset further compounds this problem. Moreover, in instances where there are extreme weather conditions at the job site (which is not uncommon, especially in oil and gas applications) the individuals delivering the fuel who have to remain exposed to the elements during the refueling process may suffer heat exhaustion, dehydration or frost bite depending on the nature of the job site. Finally, in prior art systems, the fuel level in each of the fuel consuming assets should be continuously monitored to determine when the fuel level has reached below a threshold level and ensure fuel is delivered on a timely manner so that the fuel consuming asset does not run out of fuel.
Additionally, in certain prior art implementations fuel is pumped to a fuel consuming asset. However, at certain points during the operation, the rate at which fuel is consumed by the fuel consuming asset may be less than the rate at which fuel is delivered to the fuel consuming asset by the pump. For example, the rate at which the fuel consuming asset can receive the fuel may be less than the pump's minimum flow requirements. To address this problem, prior pumps typically included a bypass line to circulate the excess fuel back to the pump and avoid pressure build up. Specifically, any fuel delivered to the fuel consuming asset in excess of what the fuel consuming asset could receive would be recirculated back to the pump through the bypass line. However, as the fuel is recirculated through the pump to address the pressure build up the fuel heats up, ultimately damaging the pump.
There is therefore a need for a method and system to safely and efficiently deliver fuel to such fuel consuming assets that addresses these and other shortcomings of prior art fuel delivery systems.
The present disclosure may comprise one or more of the following features and combinations thereof.
In accordance with one illustrative embodiment, the present disclosure is directed to a system for delivering a first fluid to a fluid consuming asset having a fluid tank. The system comprises a tank, wherein the tank contains the first fluid to be delivered to the fluid consuming asset and a manifold having a first inlet and one or more outlets. The first inlet of the manifold is fluidically coupled to an outlet of the tank through a fluid coupling and the first fluid flows from the tank into the manifold through the first inlet. A first pressure relief valve is disposed on the fuel delivery coupling between the outlet of the tank and the first inlet of the manifold. The first pressure relief valve is set at a first predetermined pressure threshold. The first pressure relief valve opens when the back-pressure in the fuel delivery coupling exceeds the first predetermined pressure threshold and the first fluid is directed back to the tank through a first re-circulation inlet when the first pressure relief valve opens. The system further comprises a spigot fluidically coupled to one of the one or more outlets of the manifold. A first distal end of the spigot is fluidically coupled to one of the one or more outlets of the manifold and a second distal end of the spigot is fluidically coupled to a fluid transporting mechanism. The fluid transporting mechanism comprises a first distal end fluidically coupled to the second distal end of the spigot and a second distal end. The system further comprises a fill cap having a connection plate, wherein the connection plate is coupled to an opening of a tank of a fluid consuming asset. The fill cap further comprises a hydraulic connector fluidically coupled to the second distal end of the fluid transporting mechanism and a probe disposed within the fluid tank of the fluid consuming asset. The probe comprises an inlet at a first distal end coupled to the connection plate and an outlet at a second distal end within the fluid tank. The inlet of the probe is fluidically coupled to the hydraulic connector and the fluid flows from the fluid transporting mechanism, through the hydraulic connector and into the probe through the probe inlet. The fluid flows into the fluid tank of the fluid consuming asset through the outlet of the probe.
In accordance with another illustrative embodiment, the present disclosure is directed to a method of delivering fuel to a fuel consuming asset having a fuel tank, the method comprising: filling a tank with the fuel; fluidically coupling the tank to a manifold through a fuel delivery coupling, wherein a first pressure relief valve is disposed between the tank and the manifold; fluidically coupling the manifold to a fluid transporting mechanism; fluidically coupling the fluid transporting mechanism to a hydraulic connector of a fill cap; coupling the fill cap to an opening of the fuel tank; directing the fuel from the first tank to the second tank through a first connection; pressurizing the second tank; directing the fuel from the second tank to the manifold through the fuel delivery coupling; turning on a valve on the spigot to allow fluid flow through the spigot; directing the fuel through the spigot into the fluid transporting mechanism; directing the fuel from the fuel transporting mechanism to the hydraulic connector of the fill cap; directing the fuel from the hydraulic connector into the fuel tank through an outlet of a probe of the fill cap; and stopping the flow of fuel out of the probe and into the fuel tank when a level of fuel in the fuel tank reaches a predetermined maximum level. In accordance with an illustrative embodiment of the present disclosure, the first pressure relief valve is set at a first predetermined pressure threshold, the first pressure relief valve opens when the back-pressure in the fuel delivery coupling exceeds the first predetermined pressure threshold, and the fuel is directed back to the tank through a first re-circulation inlet when the first pressure relief valve opens.
Further, in accordance with certain illustrative embodiments, fluidically coupling the manifold to a fluid transporting mechanism comprises fluidically coupling a spigot at an outlet of the manifold to the fluid transporting mechanism. Further, in accordance with certain illustrative embodiments, coupling the fill cap to the opening of the fuel tank comprises: inserting a first connecting member having an inner lip disposed within the fuel tank and an outer lip disposed outside the fuel tank through a first opening on a connection plate of the fill cap; inserting a second connecting member having an inner lip disposed within the fuel tank and an outer lip disposed outside the fuel tank through a second opening on the connection plate of the fill cap; and fastening a first fastener corresponding to the first connecting member and a second fastener corresponding to the second connecting member until the inner lip of the first connecting member and the inner lip of the second connecting member rest against a wall of the fuel tank.
The objects, advantages and other features of the present invention will become more apparent upon reading of the following non-restrictive description of a preferred embodiment thereof, given by way of example only with reference to the accompanying drawings. Although various features are disclosed in relation to specific exemplary embodiments of the invention, it is understood that the various features may be combined with each other, or used alone, with any of the various exemplary embodiments of the invention without departing from the scope of the invention.
For a more complete understanding of the present invention and its features and advantages, reference is now made to the following description, taken in conjunction with the accompanying drawings, in which:
While embodiments of this disclosure have been depicted and described and are defined by reference to example embodiments of the disclosure, such references do not imply a limitation on the disclosure, and no such limitation is to be inferred. The subject matter disclosed is capable of considerable modification, alteration, and equivalents in form and function, as will occur to those skilled in the pertinent art and having the benefit of this disclosure. The depicted and described embodiments of this disclosure are illustrative examples only, and not exhaustive of the scope of the disclosure.
The following detailed description illustrates embodiments of the present disclosure. These embodiments are described in sufficient detail to enable a person of ordinary skill in the art to practice these embodiments without undue experimentation. It should be understood, however, that the embodiments and examples described herein are given by way of illustration only, and not by way of limitation. Various substitutions, modifications, additions, and rearrangements may be made that remain potential applications of the disclosed techniques. Therefore, the description that follows is not to be taken as limiting on the scope of the appended claims. In particular, an element associated with a particular embodiment should not be limited to association with that particular embodiment but should be assumed to be capable of association with any embodiment discussed herein.
As used herein, the terms “coupled” or “couple” include both a direct connection and an indirect connection between components. Similarly, the term “fluidically coupled” includes both a direct connection allowing fluid flow between two components as well as an indirect connection allowing fluid flow between two components. Further, in the figures and the description, like numerals are intended to represent like elements.
As used herein, the term “fuel consuming asset” includes any equipment or component of a system that consumes fuel and may need refueling on location. For example, the term “fuel consuming asset” includes any fuel consuming equipment having a fuel tank that is too small to hold sufficient fuel to complete the task at hand before refueling is required. The term “fuel consuming asset” further includes any fuel consuming equipment that needs to refuel “on-location” because, for example, it is remotely located or moving it to a fuel source to refuel is expensive, time consuming and/or otherwise inefficient. In one embodiment, the fuel consuming asset may be equipment used in oilfield applications such as, for example, equipment used in construction or development of oil and gas fields. The term “fuel consuming asset” may include a number of other equipment including, for example, irrigation pumps, emergency response generators, construction equipment, or any oilfield services equipment (e.g., fracturing equipment, etc.).
In one or more exemplary embodiments there is disclosed herein a new and improved Fueling On-Demand System and associated methods used to deliver fuel to a fuel consuming asset.
The present invention is not limited to any specific volume for the first tank 202 and the second tank 204 and any suitable size for each tank may be used without departing from the scope of the presentation disclosure depending on the particular application. However, in certain illustrative embodiments, the first tank 202 may have a volume of approximately 20,000 gallons and the second tank may have a volume of in a range of approximately 6500 gallons to approximately 9000 gallons.
In accordance with an embodiment of the present invention, the second tank 204 is pressurized. The pressure of the second tank 204 may be set depending on the particular application and system requirements and the present disclosure is not limited to a specific pressure. However, in certain illustrative embodiments, the pressure of the second tank 204 may be in the range of approximately 45 psi to approximately 150 psi. Similarly, the operating pressure for the system may be set depending on the particular application and system requirements and the present disclosure is not limited to a specific pressure. However, in certain illustrative embodiments, the operating pressure of the system may be at a range of approximately 0 psi to approximately 150 psi.
Any suitable means known to those of ordinary skill in the art may be used to pressurize the second tank 204. In certain illustrative embodiments, a compressor 206 may be used to pressurize the second tank 204. The compressor 206 may be powered by a generator 208. As would be appreciated by those of ordinary skill in the art, having the benefit of the present disclosure, the generator 208 may be any suitable generator for the particular application including, but not limited to, a diesel-powered generator, a gas-powered generator, etc.
The first tank 202 and the second tank 204 are fluidically coupled through a first connection 210. The first connection 210 may be any suitable connection that would allow fluid flow between the first tank 202 and the second tank 204 including, but not limited to, a suitable hose or a suitable pipe. The first tank 202 contains the fuel to be delivered to the one or more fuel consuming assets 214A, 214B, 214C at the job site. The fuel flows from the first tank 202 to the second tank 204 through the first connection 210. In certain embodiments, the first connection 210 may be a metered connection and may include a metering module 211 to track the amount of fuel flowing from the first tank 202 to the second tank 204.
In certain illustrative embodiments, the first tank 202 and the second tank 204 may also be fluidically coupled through an optional second connection 212. The optional second connection 212 may also be any suitable connection that would allow fluid flow between the second tank 204 and the first tank 202 including, but not limited to, a suitable hose or a suitable pipe. The second connection 212 allows fuel to flow back from the second tank 204 to the first tank 202. Specifically, the second connection 212 provides a recirculation path for fuel flow between the second tank 204 and the first tank 202 such that excess fuel from the second tank 204 can return to the first tank 202. In this manner, the second connection 212 helps facilitate the constant supply of fuel under the pressure from the compressor 206 from the second tank 204 to the fuel consuming assets 214.
The second tank 204 is fluidically coupled to a manifold 216 and the pressurized fuel from the second tank 204 may flow to the manifold 216 through a fuel delivery coupling 218. Specifically, the air pressure from the compressor 206 forces the fuel from the second tank 204 through the fuel delivery coupling 218 into the manifold 216. The manifold 216 includes an inlet (shown in
The manifold 216 further includes a plurality of outlets 219A, 219B, 219C, 219D, 219E, 219F. The number of outlets 219 shown in the figures of the present disclosure is for illustrative purposes only and the present disclosure is not limited to any particular number of outlets 219 for the manifold 216. Accordingly, as would be appreciated by those of ordinary skill in the art having the benefit of the present disclosure, fewer or more outlets 219 may be used depending on the particular implementation and system requirements. The details of structure and operation of the manifold 216 is discussed further in conjunction with
Each outlet 219 (or a subset thereof) of the manifold 216 may be fluidically coupled to a corresponding fuel consuming asset 214A, 214B, 214C via a fluid transporting mechanism. Specifically, a first distal end of the fluid transport mechanism may be fluidically coupled to an outlet 219 of the manifold 216 and a second distal end of the fluid transporting mechanism may be fluidically coupled to the fuel consuming asset. In certain implementation (as shown in
In accordance with certain illustrative embodiments, the hose 220 that fluidically couples a manifold outlet 219 to a fuel consuming asset 214 may optionally be made of rubber or steel. Moreover, in certain embodiments, the hose 220 may be disposed within a Kevlar sleeve to diffuse static electricity and avoid risks (e.g., fire) associated with static electricity. In accordance with certain illustrative embodiments, the hose 220 may be a segmented hose as shown in
The hose segments 220C1, 220C2, 220C3, 220C4 may be detachably coupled using any suitable means for the particular application such as, for example, a threaded connection, a hydraulic dry break coupling, or cam locks. In certain illustrative embodiments, the hose segments 220C1, 220C2, 220C3, 220C4 may be coupled using a hydraulic dry break coupling 222. In certain embodiments, the hydraulic dry break coupling 222 may be hydraulically crimped to an open end of the first hose segment 220C1 and the last hose segment 220C4 and to each distal end of the remaining hose segments 220C2, 220C3. The structure and operation of a hydraulic dry break coupling 222 is known to those of ordinary skill in the art, having the benefit of the present disclosure, and will therefore not be discussed in detail herein. The hydraulic dry break coupling 222 between the hose segments 220C1, 220C2, 220C3, 220C4 allows the operator to selectively decouple the hose segments 220C1, 220C2, 220C3, 220C4 from each other throughout the process as needed without any fuel spillage. Specifically, the use of a segmented hose 220 in accordance with the illustrative embodiments of the present disclosure allows the fuel to be contained in detachable compartments (i.e., the individual hose segments) within the hose 220.
The use of a segmented hose 220 has a number of advantages. For example, in the event of a leak from any particular segment of the hose 220 the operator can disconnect the leaking hose segment from its adjacent hose segments upstream and downstream in order to prevent and/or at least limit fuel spillage. Moreover, the operator can readily replace a damaged segment of a hose 220 without the need to remove and replace the whole hose. Additionally, the length of the hose can be readily increased or reduced depending on the particular implementation by selectively adding hose segments or removing hose segments as desired without the need to replace one hose with another as needed for the particular application or for each given fuel consuming asset. Other advantages of using a segmented hose would become evident to those of ordinary skill in the art having the benefit of the present disclosure.
In the illustrative embodiment of
For instance, in certain implementations, it may be desirable to supply both clear fuel and dyed fuel at a job site. Accordingly, the operator may close the valve 310 and effectively divide the manifold 216 into two distinct compartments 304, 306 separated by the divider 308. The inlet 304A, 306A of one of the compartments 304, 306 may then be fluidically coupled to a fuel delivery coupling (such as the fuel delivery coupling 218 of
Although the illustrative embodiments of the present disclosure are described in conjunction with delivering fuel to a fuel consuming asset, one of ordinary skill in the art having the benefit of the present disclosure would readily understand that the present invention is not limited to this particular application. Specifically, the methods and systems disclosed herein may be used to delivery any fluid to any system. Accordingly, depending on the particular application and implementation, the manifold 216 may have more than two compartments similarly separated by dividers and valves as described in conjunction with
Moreover, the use of the divider 308 and the valve 310 is optional. For instance, in certain illustrative embodiments, the manifold 216 may be designed to be a single compartment and it may not include a divider 308 if the operator intends to use it to deliver only one type of fluid (e.g., only clear fuel). Similarly, depending on the particular application and implementation, the system may include a divider 308 but not a valve 310 to selectively combine and separate the two compartments 304, 306 of the manifold 216.
In implementations where the manifold 216 is a single compartment (i.e., there is no divider wall 308 or the valve 310 is open allowing fluid flow between the compartments 304, 306), all spigots 314 dispense the same fluid (e.g., they all dispense clear fuel or they all dispense dyed fuel). In contrast, in implementations where the manifold comprises of two compartments (i.e., there is a divider wall 308 with no valve 310 or the valve 310 is closed prohibiting fluid flow between the compartments 304, 306), a first group of spigots 314 corresponding to the first compartment 304 may dispense a first fluid (e.g., clear fuel) and a second group of spigots 314 corresponding to the second compartment 306 may dispense a second fluid (e.g., dyed fuel).
In certain implementations, the spigot 314 may also include an inline flow meter (e.g., a digital inline meter) (not shown) to monitor the fluid flow to a given fuel consuming asset 214 through the manifold 216. The inline flow meter may be placed at any point between the valve 404 and the hose 220.
Accordingly, the operator can selectively open and close the valve 404 to allow fluid flow out of any given outlet 219 of the manifold 216 through the corresponding spigot 314 into a hose 220 that is fluidically coupled to a given fuel consuming asset 214.
Figure SA depicts a cross-sectional view of the mechanism for connecting the disclosed fuel delivery system to a fuel tank of a fuel consuming asset with the connecting members not fastened in accordance with an exemplary embodiment of the present disclosure. Specifically, the figure depicts an improved connection mechanism for fluidically coupling the hose 220 to the fuel consuming asset 214 in accordance with an illustrative embodiment of the present disclosure. The fuel consuming asset 214 includes a fuel tank 502 which may contain a certain amount of fuel 504. The fuel is dispensed into the fuel tank 502 from the hose 220 through a fuel tank opening 506. A new and improved fill cap 600 is used to fluidically couple the hose 220 to the fuel tank opening 506. The structure and operation of the fill cap 600 is discussed in further detail below.
The connection plate 602 of the present invention is designed to be easily couplable to fuel tanks having different fuel tank opening sizes. Specifically, in one illustrative embodiment, the connection plate 602 includes two openings 614. A connecting member 616 may be inserted through each opening 614. In one embodiment, the connecting member 616 may be a “J” shaped or a “C” shaped connecting member. In certain implementations, it is advantageous to use a “C” shaped connecting member 616 so that the user can determine the location of the inner lip 616A of the connecting member 616 disposed within the fuel tank 502 based on the location of the outer lip 616B of the connecting member 616 which is disposed outside the fuel tank 502 and is therefore visually accessible and can be observed by the operator.
The connecting member 616 may be made of any suitable material for the desired application including, but not limited to, steel, plastic, or stainless steel. In certain embodiments, all or part of the connecting member 616 may be threaded. Once the connecting member 616 is inserted through the opening 614 on the connection plate 602, a fastener 618 may be used to fasten the connecting member 616 such that it couples the connection plate 602 to the fuel tank opening 506. Specifically, in one embodiment, the fastener 618 may be a nut that is coupled to threads on the connecting member 616. Any suitable nut may be used as the fastener 618. For instance, in certain embodiments, the fastener 618 may be a wing nut. As the fastener 618 is tightened on the connecting member 616, the connecting member 616 moves upwards (i.e., the inner lip 616A moves towards the connection plate 602) through the opening 614 in the connection plate 602 until it has moved enough for the inner lip 616A of the connecting member 616 disposed within the fuel tank 502 to rest against the wall of the fuel tank 502 as shown in Figure SB. At this point, the connecting member 616 holds the fill cap 600 in place against the fuel tank 502 while the fueling operation is performed.
Although two openings 614 and two corresponding connecting members 616 are shown in the illustrative embodiment of
In certain implementations, the connection plate 700 (or 602) may be made of any drillable material such as, for example, plexiglass, hardened plastic, hard rubber, wood, aluminum, or any other suitable material that can be readily impaled at the job site. Accordingly, the suitable distance of openings for the insertion of connecting members to attach the fill cap 600 to a particular tank having a particular tank opening size may be determined at the job site on the fly. Specifically, in such embodiments, the user may determine the appropriate location for the openings on the connecting plate at the job site depending on the size of the opening on the fuel tank to be refueled. The user can then drill the openings at the appropriate location on the connection plate for the insertion of the connecting member such that the distance between the connecting members is sufficient to allow the inner lip of the connecting members to hold the connection plate (and hence, the fill cap) in place once the fastener is tightened. This coupling mechanism is advantageous because it allows the fill cap 600 to be coupled to fuel tanks having varying fuel tank opening sizes. In this implementation, the present disclosure facilitates a custom positioning of the connecting member allowing the coupling of the fill cap 600 to standard and nonstandard size fuel tank openings for safe and effective securement.
Now turning back to
A probe 606 extends from a second side of the connection plate 602. The probe comprises an inlet at a first distal end coupled to the connection plate 602 and an outlet at a second distal end. The outlet of the probe 606 is disposed within the fuel tank 502. The probe 606 is fluidically coupled to the hydraulic connector 604 such that the fuel delivered to the hydraulic connector 604 through the hose 220 flows into the inlet of the probe 606 through the opening in the connection plate 602. The fuel then passes through the probe 606 and is dispensed into the fuel tank 502 through the probe outlet. In certain illustrative embodiment, the probe 606 may be selectively extendable and retractable. For instance, in certain illustrative embodiments, the probe 606 may be telescopically extendable and retractable. In other embodiments, the probe 606 may comprise of one or more segments coupled through a threaded collar or joint (shown at 606A). The user may then selectively increase or reduce the length of the probe 606 depending on the particular application and implementation by adding or removing one or more segments to the probe 606 as desired. The ability to selectively extend and retract the length of the probe 606 in this manner is beneficial as it allows the operator to easily adjust the manner of delivery of fuel to the fuel tank 502 on the fly by adjusting the position of the point of fuel delivery within the fuel tank 502. The probe 606 may be made from any suitable material including, but not limited to, steel, copper, hard rubber, or aluminum.
In certain illustrative embodiments, a valve 608 may be disposed at a second distal end of the probe 606 and may be coupled thereto in order to control the fluid flow out of the outlet of the probe 606. The valve 608 is operable to selectively open and close the outlet of the probe 606 to control the delivery of fuel to the fuel tank 502. Specifically, the valve 608 is movable between an open position and a closed position such that fuel does not flow out of the outlet of the probe 606 when the valve is in the closed position. In contrast, with the valve 608 in the open position, fluid flows out o the outlet of the probe 606.
The valve 608 may be any suitable valve for the particular application such as, for example, a foot valve or a Hudson valve. In certain illustrative embodiments, an arm 612 is operable to open and close the valve 608. Specifically, the arm 612 may couple the valve 608 to a float 610. In certain illustrative embodiments, the arm 612 may be made of stainless steel. The float 610 may be made from any suitable material for the particular application including, but not limited to, aluminum, foam, plastic, or wood.
As fuel is added to the fuel tank 502 through the probe 606, the level of fuel 504 in the fuel tank 502 rises, moving the float 610 up. As the float 610 moves up, it moves the arm 612, in tum moving the valve 608. Finally, once the fuel 504 rises to a predetermined “maximum” level, the float 610 moves the arm 612 such that the arm 612 closes the valve 608 as shown in
Additionally, the new and improved probe design disclosed herein provides an automated mechanism to shut down the delivery of fuel to the fuel tank 502 of each fuel consuming asset 214A, 214B, 214C, virtually eliminating the risk of fuel overflow and spillage. Moreover, the methods and systems disclosed herein eliminate the need for personnel to monitor the fuel level during fuel delivery at the one or more fuel consuming assets on the job site thereby improving the efficiency of the refueling process and reducing the associated time, risk of exposure or injury, and costs.
Accordingly, a user can easily refuel one or more fuel consuming assets at a job site using the improved system of the present disclosure. An illustrative improved method for delivering fuel to a fuel consuming asset using the fuel delivery system of the present disclosure is now described in conjunction with
First, at step 802, the first tank 202 is filled with the fuel to be delivered (e.g., clear fuel, dyed fuel, etc.). The amount of fuel filled in the first tank 202 depends on the amount of fuel needed for the particular application. Accordingly, the term “filled” as used in this context is not limited to filling the first tank 202 to its maximum capacity and also includes instances when the first tank 202 is filled to an amount less than its maximum capacity. In certain implementations where the manifold permits a compartmentalized delivery of more than one fuel (as described above in conjunction with
Next, at step 804, the fuel and other system components are delivered to the job site. The first tank 202 carrying the fuel to be delivered is transported to the job site. The second tank 204 is likewise transported to the job site. The compressor 206 and the generator 208 are also transported to the job site. In certain illustrative embodiments, the compressor 206 and the generator 206 may be disposed on a trailer or they may be carried to the job site together with the first tank 202 and/or the second tank 204. In certain illustrative embodiments, more than one compressor and more than one generator may be taken to the job site to provide redundancy in the event of equipment failure. Finally, the manifold 216, the hoses 220 and the fill caps 600 are all delivered to the job site. In embodiments where the manifold permits a compartmentalized delivery of more than one fuel to a fuel consuming asset, a corresponding set of equipment (a corresponding second pressurized tank and optionally, additional compressors and generators) for the deli very of the second fuel to the second compartment of the manifold is likewise delivered to the job site and utilized as discussed below.
In certain implementation where it is desirable to repeatedly refuel the fuel consuming assets 214 at a job site, the non-pressurized tank (i.e., first tank 202) containing the fuel may be refilled and transported back and forth between the job site and the fuel source while the remaining system components (e.g., the second tank 204, the compressor 206, the generator 208, fuel delivery coupling 218, the manifold 216, the hoses 220, and the fill caps 600) may be kept at the job site throughout the performance of the job.
Next at step 806, the system components are connected. Specifically, personnel at the job site will fluidically couple the first tank 202 and the second tank 204 by hooking up the first connection 210 and if present, the optional second connection 212. The second tank 204 is also fluidically coupled to the manifold 216 using the fuel delivery component 218. Each fuel consuming asset 214 to be refueled is also fluidically coupled to the manifold 216 using a corresponding hose 220. Specifically, based on the distance between the manifold 216 and each fuel consuming asset 214 the required length of hose 220 is determined. In implementations using a segmented hose, the correct number of hose segments (e.g., 220C1, 220C2, 220C3, 220C4) are coupled together to create the appropriate length of hose 220. A first distal end of the hose 220 is then fluidically coupled to a corresponding spigot 314 of the manifold 216 and a second distal end of the hose 220 is fluidically coupled to a corresponding fill cap 600 as described above.
Next, at step 808, each fill cap 600 is coupled to an opening on a fuel tank 502 of a corresponding fuel consuming asset 214 by tightening the fasteners 618 thereon so that the connecting members 616 keep the connection plate 602 of the fill cap 600 attached to the opening 506 of the fuel tank 502.
Finally, at step 810, fuel is delivered to each fuel consuming asset on demand. Specifically, once the system is connected, fuel is directed from the first tank 202 to the second tank 204 through the first connection 210. The generator 208 then supplies power to the compressor 206 which pressurizes the pressurized tank 204. The pressure applied by the compressor 206 directs fuel from the pressurized tank 204 through the fuel delivery coupling 218 to the manifold 216. Any extra fuel is recirculated back to the first tank 202 through the second connection 212. The manifold 216 then distributes the fuel through each outlet 312 having a spigot 314 with a valve 404 which is turned to the open position. The fuel then flows from the spigots 314 that are turned on (i.e., have a valve 404 in the open position) through the hose 220 to a corresponding fuel consuming asset 214 through the probe 606 of the fill cap 600. Fuel will continue to be delivered to each fuel consuming asset until the “maximum level” of fuel for the particular asset has been reached at which point the float 610 moves up moving the arm 612 which shuts down the valve 608 on the probe 606 and stops the fuel delivery. The fuel delivery will resume once fuel is consumed and the fuel level goes down taking down the float 610 and moving the valve 608 back to the open position.
In accordance with an illustrative embodiment of the present disclosure, a first pressure relief valve 914 may be fluidically coupled to the fuel delivery coupling 218 between the pump 908 and the manifold 216. The first pressure relief valve 914 is fluidically coupled to the tank 900 through a first recirculation inlet 904. The first pressure relief valve 914 is set at a predetermined first pressure threshold. Accordingly, if the fuel consuming assets coupled to the manifold 216 are unable to receive the fuel at the rate being delivered by the pump 908, the backpressure from the manifold 216 in the fuel delivery coupling 218 increases. The pressure continues to build up and once the back-pressure of the fuel in the fuel delivery coupling 218 reaches the first pressure threshold the pressure relief valve 914 opens. With the pressure relief valve 914 open, fuel flows from the fuel delivery coupling 218 back to the tank 900 through the first recirculation inlet 904. The first pressure relief valve 914 remains open and fuel continues to flow back to the tank 900 until the pressure in the fuel delivery coupling 218 falls below the first pressure threshold. At this point, the first pressure relief valve 914 closes, stopping fuel flow back to the tank 900. The first pressure threshold may be set depending on the particular implementation and system requirements. For example, in certain illustrative embodiments, the first pressure threshold may be set to be between approximately 15 psi to approximately 100 psi.
In accordance with certain illustrative embodiments, a second pressure relief valve 916 is fluidically coupled to the manifold 216 and disposed thereon. The use of two separate pressure relief valves 914, 916 may provide redundancy in the system. The second pressure relief valve 916 is fluidically coupled to the tank 900 through a second recirculation inlet 906. The second pressure relief valve 916 is set at a predetermined second pressure threshold. Accordingly, if the fuel consuming assets coupled to the manifold 216 are unable to receive the fuel at the rate being delivered by the pump 908, the back-pressure from the manifold 216 increases. The pressure continues to build up and once the back-pressure of the fuel in the manifold 216 reaches the second pressure threshold the pressure relief valve 916 opens. With the pressure relief valve 916 open, fuel flows from the manifold 216 back to the tank 900 through the second recirculation inlet 906. The second pressure relief valve 916 remains open and fuel continues to flow back to the tank 900 until the pressure in the manifold 216 falls below the second pressure threshold. At this point, the second pressure relief valve 916 closes, stopping fuel flow back to the tank 900. The second pressure threshold may be set depending on the particular implementation and system requirements. In certain illustrative embodiments, the first pressure threshold of the first pressure relief valve 914 and the second pressure threshold of the second pressure relief valve 916 may be the same and the two operate in tandem with each providing redundancy. In other illustrative embodiments, the first pressure threshold of the first pressure relief valve 914 and the second pressure threshold of the second pressure relief valve 916 may be different. For example, in certain illustrative embodiments, the second pressure threshold may be set to be between approximately 15 psi to approximately 100 psi.
Although two pressure relief valves are shown in the illustrative embodiment of
The first pressure relief valve 914 and the second pressure relief valve 916 may be any suitable pressure relief valve for the particular application. In the exemplary embodiment of
The upper assembly 1002 may be fluidically coupled to the hose 220 for instance, through the hydraulic connector 604. In one illustrative embodiment, the upper assembly 1002 may include threads 1008 to facilitate a threaded connection to the hydraulic connector 604. As would be appreciated by those of ordinary skill in the art, having the benefit of the present disclosure, in accordance with another illustrative embodiment the hose 200 may be directly coupled to the upper assembly 1002 such as, for example, through a threaded connection using the threads 1008. Accordingly, the fluid to be delivered to the fuel consuming asset 214 flows through the hose 220 into the upper assembly 1002. The upper assembly 1002 includes one or more outlets 1010 and fluid flows out of the upper assembly 1002 and into the fuel tank 502 though the outlets 1010. Although the outlets 1010 are shown to be radially disposed along the outers surface of the upper assembly 1002, the present disclosure is not limited to any particular configuration of outlets 1010. Accordingly, fewer or more outlets 1010 may be disposed on the upper assembly 1002 in a radial or any other desirable configuration.
In accordance with an illustrative embodiment of the present disclosure, two or more rods 1012 extend between the upper assembly 1002 and the lower assembly 1006. In one embodiment, a first distal end of each rod 1012 may be coupled to the upper assembly 1002 and a second distal end of each rod 1012 may be coupled to the lower assembly 1006. The float assembly 1004 is disposed between the upper assembly 1002 and the lower assembly 1006 and the rods 1012 extend along an outer surface of the float assembly 1004 such that the float assembly 1004 is movable along the rods 1012 between the upper assembly 1002 and the lower assembly 1006. Accordingly, the float assembly 1004 is movable along the rods 1012 between a first position proximate to the upper assembly 1002 and a second position proximate to the lower assembly 106. In accordance with an illustrative embodiment of the present disclosure, the float assembly 1004 may include two or more grooves 1014 extending along an outer surface thereof and the rods 1012 may be disposed in those grooves 1014 to facilitate the movement of the float assembly 1004 between the open position (
The float assembly 1004 includes a nipple 1016 at a first distal end thereof proximate to the upper assembly 1002. The nipple 1016 is movable along with the float assembly 1004 and is configured to fit within the upper assembly 1002 so as to block the outlets 1010 and prevent fluid flow out of the upper assembly 1002 when the float probe is in a closed position as shown in
The float assembly 1004 may be made of any suitable material known to those of ordinary skill in the art with the appropriate buoyancy to float on the fluid being delivered to the fuel tank 502.
In certain embodiments, the upper assembly 1002 is disposed on a seat 1204 and the rods 1012 are coupled to the seat 1204. In accordance with certain illustrative embodiments, when the nipple 1016 is pushed into the closed position, it actuates spring 1206 which in turns pushes a pin 1208. The movement of the pin 1208 moves a flange 1209 up into the upper assembly such that the flange 1209 blocks the outlets 1010 and prevents fluid flow out of the upper assembly 1002 and into the fuel tank 502.
In accordance with certain embodiments, an inlet strainer 1210 may be disposed in the upper assembly 1002 to prevent flow of undesirable solid material into the fuel tank. In certain embodiments, the interface between upper assembly 1002 and the inlet strainer 1210 may be sealed using a sealing material such as, for example, an O-ring 1212.
As would be appreciated by those of ordinary skill in the art, having the benefit of the present disclosure, the term “prevents” in this context does not require that absolutely no fluid flow out of the outlets 1010. Instead, that requirement is met once the flow of fluid out of the outlets 1010 has been restricted within a desired degree of tolerance that may depend, for example, on the nature of the interface between the nipple 1016 and the upper assembly 1002.
Although the present disclosure is generally described in the context of delivering fuel to one or more fuel consuming assets, the methods and systems disclosed herein are not limited to this particular application. Specifically, the same methods and systems may be used in any application where it may be desirable to deliver any fluid to one or more assets that consume that fluid when the fluid consuming assets are located remotely from a fluid source. Accordingly, in such implementations, the “fuel consuming asset” referenced herein can be more generally referred to as a “fluid consuming asset.”
As would be appreciated by those of ordinary skill in the art with the benefit of the present disclosure the methods and systems disclosed herein provide several advantages. For example, once the system has been connected, the operator simply turns on the valve 404 on the spigots 314 corresponding to the fuel consuming assets 214 to be refueled and the system will continue to continuously refuel each asset on-demand without the need for further intervention from the operator. Moreover, the automated nature of the fuel delivery, the use of the segmented hoses 220, and the spigots 314 having individual valves significantly reduces the risk for fuel leakage or spillage. Additionally, the fuel can be delivered to the multiple fuel consuming assets 214 in parallel significantly increasing the efficiency of the fuel delivery process and reducing the risk of one or more fuel consuming assets running out of fuel or being missed in the refueling process. As would be appreciated by those of ordinary skill in the art, having the benefit of the present disclosure, this is not intended to be an exhaustive list of all advantages and benefits of the methods and systems disclosed herein and other advantages are apparent to those of ordinary skill in the art, having the benefit of the present disclosure.
As would be appreciated, numerous other various combinations of the features discussed above can be employed without departing from the scope of the present disclosure. While the subject of this specification has been described in connection with one or more exemplary embodiments, it is not intended to limit any claims to the particular forms set forth. On the contrary, any claims directed to the present disclosure are intended to cover such alternatives, modifications and equivalents as may be included within their spirit and scope. Accordingly, all changes and modifications that come within the spirit of the disclosure are to be considered within the scope of the disclosure.
This application is a continuation of U.S. patent application Ser. No. 16/809,176, filed Mar. 4, 2020, which claims priority to and is a continuation-in-part of U.S. patent application Ser. No. 16/237,965, filed on Jan. 2, 2019 which claims priority to and is a continuation-in-part of U.S. patent application Ser. No. 16/171,180, filed on Oct. 25, 2018, and entitled “Improved Methods and Systems for On Demand Fuel Supply.”
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| Number | Date | Country | |
|---|---|---|---|
| 20230139221 A1 | May 2023 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 16809176 | Mar 2020 | US |
| Child | 17961608 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 16237965 | Jan 2019 | US |
| Child | 16809176 | US | |
| Parent | 16171180 | Oct 2018 | US |
| Child | 16809176 | US |
