Patent Grant
12227964
The present invention relates to a cooling tower or heat exchanger, and a method and apparatus for the construction and erection thereof. More particularly, the present invention relates to the construction of a modularized cooling tower, specialized components to facilitate a modular assembly, and the method of construction and assembly.
Cooling towers are heat exchangers of a type widely used to emanate low grade heat into the atmosphere and are typically utilized in industrial plants, petrochemical plants, power plants, light industrial facilities, and the like. These towers receive a relatively warm or hot fluid and pass the fluid through the tower apparatus so that heat is extracted from the fluid by interaction with relatively cooler ambient air.
Cooling towers are generally identified in two types or categories, designed as counter-flow cooling towers or cross-flow cooling towers. In a counter-flow cooling tower, liquid of high temperature is cooled as it flows downwards through fill or packing and is brought into contact with air traveling upwards. Conversely, in a cross-flow cooling tower, liquid of high temperature is cooled with air that moves horizontally through the fill or packing. The heated air is exhausted into the atmosphere using a fan, blower, or other such air moving device, and the cooled liquid is collected in a basin situated below the media fill or packing and water distribution piping system.
Liquid is generally distributed through a cooling tower in one of two ways: gravity and spray. Typically, gravity systems are used in cross-flow cooling towers, and spray systems are used in counter-flow cooling towers. In a spray system, liquid of high temperature is distributed through the cooling tower using a series of spray nozzles mounted on distribution pipes. The spray nozzles are arranged to evenly distribute the liquid over the top of media fill, designed to provide an increased surface area to facilitate cooling of the liquid. Once the now-cooled liquid travels through the media fill, it is collected at the bottom of the tower in a cold liquid basin. In a gravity system, liquid of high temperature is fed into a hot liquid basin disposed above the media fill. The liquid then travels through holes or openings in the bottom of the hot liquid basin to the media fill to facilitate cooling of the liquid. Similar to the spray system, liquid that travels through the fill is collected at the bottom of the tower in a cold liquid basin. To prevent further loss of liquid and increase the efficiency of a cooling tower, drift eliminators are often implemented to capture large water droplets above the water distribution system which is mixed with the heated air exhausted.
Current cooling tower assembly is often labor intensive in their assembly at the job site, especially in the case of large, field erected cooling towers. During replacement of an entire cooling tower or an individual cell in a multi-cell cooling tower, the prior art typically makes use of, and incorporates, the vertical columns which form the original general structure of the cooling tower. Cooling towers and related cells are often constructed in fields where more than a single cooling tower is utilized. In a multi-cell cooling tower, the cold liquid basin (which is typically 10-feet deep) is a shared basin amongst all the individual cooling tower cells. The current industry accepted field construction methodology is to replace either one cell at a time or replace all of the cells in the cooling tower simultaneously. Thus, one must disassemble and breakdown the old tower and related cells prior to the building of the new tower and related cells. It is also common industry practice to shut down the cells in a multi-cell cooling tower and reconstruct a cell member-by-member all while the remaining other cells are out of operation. This is a result of the disassembly of operational equipment driving the cells. Thus, it is desirable to assemble a replacement cooling tower in-situ, i.e., while other cooling towers within the field are operational, so that the construction of the new cooling tower does not stop the usage of the other cooling towers within the cooling tower field.
The construction of a cooling tower is a manual process and since the cost of labor for the replacement of a cooling tower is so great, it is also desirable to prefabricate cooling tower components at the factory, but conventional crossflow and counterflow designs for cooling towers oftentimes necessitate their assembly at a job site. For example, the size of the various tower component assemblies may limit their ability to be manufactured at the factory and transported to site. On the other hand, factory assembled cooling towers can be costly due to shipping inefficiencies, as well as difficulties in such areas as the sealing of the modular joints.
Therefore, it is desirable to have a cooling tower that is assembled in modules using components that can be prefabricated and manufactured in a factory and transported to a job site for final assembly. In particular, it is desirable to have a cooling tower that can be assembled with modular components in a factory, so that the cooling tower may be constructed in-situ without the removal, destruction, or temporary shutdown of adjacent remaining cells, which make up the complete and entire cooling tower field. It is further desirable to provide a method of installing a modular cooling tower with greater efficiency and safety than the methods of those utilized in the prior art. It is further desirable to provide a customized, modular assembly model which may be retrofitted into preexisting cooling tower fields, thereby removing the need to change existing mechanical components in the cooling tower field, and instead utilize the preexisting inlet piping, pumps, and related pump head pressures of the original structure. Another object of the present invention is to keep an existing cold-water basin intact and functioning in the same mechanical manner as it was intended to do in an existing cooling tower field.
Bearing in mind the problems and deficiencies of the prior art, it is therefore an object of the present invention to provide a method of replacing a preexisting cooling tower cell without stopping operation of adjacent cooling tower cells that make up the overall cooling tower field.
It is another object of the present invention to provide a method of replacing a cooling tower that may be assembled in a faster manner than the prior art, further minimizing the downtime of the cooling tower cell during replacement.
A further object of the invention is to provide an improved method of installing a cooling tower framework and related modules within the field.
It is yet another object of the present invention to provide a method of installing a modular cooling tower that may utilize preexisting mechanical equipment such as the fan stack, fan assembly and hub, torque tube, gear box, motor, and other related common cooling tower mechanical equipment.
A further object of the invention is to provide a modular design methodology which may modularize any existing cooling tower cell of any dimension, which reduces the effort required for all project phases: concept, design, engineering, fabrication, transportation, & erection.
It is another object of the present invention to provide improved thermal performance, site safety, consistent and repeatable product quality, and reduced field construction time, and manpower requirements.
A further object of the present invention is to provide a quick, secure, and structurally sound means to construct a cooling tower using modular construction pieces.
Still other objects and advantages of the invention will in part be obvious and will in part be apparent from the specification.
The above and other objects, which will be apparent to those skilled in the art, are achieved in the present invention which is directed to a method of assembling in-situ a cooling tower within a cooling field, comprising, (a) removing a single cooling tower cell in a cooling tower field having a plurality of cooling tower cells, including removing vertical columns which form an original structure of said single cooling tower cell, exposing said cooling tower cell basin footing; (b) providing a lifting device with a spreader platform comprising carrier beams and lifting cables secured to said carrier beams at one end and said lifting device at an opposite end, wherein the spreader platform is capable of supporting, balancing and lifting objects below the spreader platform by lift members to be attached to the spreader platform via securing members; (c) providing a plurality of foundation beams each comprising an elongated member having a longitudinal axis, a first end, a second end opposite said first end, a top surface, and a bottom surface opposite said top surface, said top surface and said bottom surface extending along said longitudinal axis between said first end and said second end, said top surface including securing members extending from said top surface in a direction perpendicular to said longitudinal axis; (d) attaching said securing members to said lift members, thereby securing at least one of said plurality of foundation beams to said lift members; (e) lifting the spreader platform with the lift member to thereby lift said spreader platform and the at least one of said plurality of foundation beams; (f) while lifted, moving the spreader platform and the at least one of said plurality of foundation beams to a site location above said exposed basin footing; (g) lowering the at least one of said plurality of foundation beams to said site location; and (h) detaching said lift members from said securing members. The spreader platform may further comprise lift beams transverse to said carrier beams.
The method may further include the steps of (i) providing a first framework structure of a modular cooling tower cell, comprising a rectangular framework structure and vertical members each having a top and a bottom end and an axis in the vertical direction, fitting lug projections extending from said vertical member top end along said vertical axis, and receiving lugs on said bottom end of said vertical members, wherein said fitting lug projections are sized to be fitted with complementary receiving lugs of a second framework structure to secure said first framework structure to said second framework structure, and wherein said receiving lugs are sized to be fitted with said securing members of the at least one of said plurality of foundation beams to secure said rectangular framework structure to the at least one of said plurality of foundation beams; (j) inserting said fitting lug projections within said lift members, thereby securing said first framework structure to said lift members; (k) lifting the spreader platform with the lift member to thereby lift said spreader platform and said first framework structure; (l) while lifted, moving the spreader platform and the first framework to a position above the at least one of said plurality of foundation beams; (m) lowering said first framework structure onto the at least one of said plurality of foundation beams, and subsequently aligning said securing members with said receiving lugs of said first framework structure; (n) inserting said securing members within said receiving lugs of said first framework, thereby securing said first framework to said at least one foundation beam; and (o) detaching said lift members from said fitting lug projections. In addition, the method may further include (p) providing a second framework structure of the modular cooling tower cell, said second framework structure comprising a rectangular framework of the cooling tower cell, having a top end, a bottom end, and second framework vertical members each having a top end and a bottom end and an axis in the vertical direction, lifting lug projections extending from said second framework structure vertical member top end along said vertical axis, and receiving lugs on said bottom end of said second framework structure vertical member; (q) inserting said lifting lug projections within said lift members, thereby securing said second framework structure to said lift members; (r) lifting the spreader platform with the lift member to thereby lift said spreader platform and said second framework structure; (s) while lifted, moving the spreader platform and the second framework structure to a position above said first framework structure; (t) lowering said second framework onto said first framework structure, and subsequently aligning said fitting lug projections with said receiving lugs of said second framework structure; (u) inserting said fitting lug projections within said receiving lugs of said second framework structure, thereby securing said second framework structure to said first framework structure; and (v) detaching said lift members from said lifting lug projections. The lift members may be connected to the spreader platform by a braided metal cable. The basin footing may have a length and a width and step (g) may include securing the at least one of said plurality of foundation beams across the width of said basin footing such that the at least one of said plurality of foundation beams is elevated above a water level on said basin footing. The method may be completed while at least one of said plurality of cooling tower cells in said cooling tower field remain operational.
The present invention also provides a method of designing a modular cooling tower cell, comprising providing a plurality of vertical and horizontal members having dimensional measurements and a predetermined bolt hole pattern consistent along a length of each of said plurality of vertical and horizontal members, said predetermined bolt hole pattern comprising a plurality of connection points; collecting at a first location a data set from a preexisting cooling tower cell, said data set including at least, basin size data, cell size data, fill elevations, header pipe elevations, and deck elevations; using said data set to generate a build specification for a modular cooling tower cell to replace said preexisting cooling tower cell, said modular cooling tower cell comprising a plurality of modules; calculating a custom cut list for vertical and horizontal members which form the basis of said plurality of modules; adjusting said dimensional measurements of said plurality of vertical and horizontal members without affecting said plurality of connection points; using a manufacturing device to fabricate said vertical and horizontal members according to said custom cut list, each of said vertical and horizontal members including the plurality of connection points; constructing at a second location the plurality of modules using said build specification such that the vertical and horizontal members are connected using said plurality of connection points to form said module, each of said plurality of modules comprising a matrix having a height, a length, and a width based on the data set from said preexisting cooling tower cell; and moving said plurality of modules from said second location to said first location where said plurality of modules may be installed; wherein said build specification allows the modular cooling tower cell to utilize mechanicals of said preexisting cooling tower cell after installation of said plurality of modules. Each of said plurality of modules may further include a plurality of brace members such that said plurality of modules provides a truss-like structure in said modular cooling tower cell. The modular cooling tower cell may further comprise a plurality of foundation beams, wherein said manufacturing device fabricates said plurality of foundation beams, wherein said foundation beams are constructed at said second location, and where said plurality of foundation beams are moved from said second location to said first location for installation, such that said modular cooling tower cell may utilize mechanicals of said preexisting cooling tower cell after installation of said plurality of modules and said plurality of foundation beams.
The present invention further provides a lift mechanism for use in assembling a modular cooling tower comprising a spreader platform comprising carrier beams, lift beams transverse to said carrier beams, and lifting cable secured to said carrier beams at one end and attachable to a lifting device at a second end; said lift beams including a securing member, said securing member attached to said lift beams at one end and attached to a lift member at a second end; and said lift member capable of mating with a structure lug of a cooling tower structure such that said spreader platform may raise, lower, move or any combination thereof said cooling tower structure from an uninstalled position to an installed position. The lifting lugs may further include projections for fastening the structure lug thereto. The lift beams may further comprise a coupling assembly having a plurality of apertures, to change a position said securing member is secured to said lift beams such that twisting and/or swaying of the spreader platform, said cooling tower structure, or both is prevented.
The present invention further provides a foundation beam for establishing a base platform for a replacement modular cooling tower cell, comprising an elongated member having a longitudinal axis, a first end, a second end opposite said first end, a top surface, and a bottom surface opposite said top surface, said top surface and said bottom surface extending along said longitudinal axis between said first end and said second end; a plurality of securing lugs extending in a direction perpendicular to said top surface; and an anchor footing on each of said first end and said end, said anchor footing including a flange extending from said bottom surface; wherein said elongated member may be placed across a width of a cooling tower basin footing such that said flange portion may retain an edge of said basin footing thereon to secure said elongated member to said cooling tower basin foundation; and wherein each of said plurality of securing lugs are sized to be received by a complementary receiving lug of similar dimensions during installation of said replacement modular cooling tower cell. The securing lugs may be received within lifting lugs and secured thereto such that a lifting device attached to said lifting lugs may raise, lower, move, or any combination thereof said foundation beam from an uninstalled position to an installed position. The plurality of securing lugs may further include a shim plate, said shim plate adjacent to said top surface and moveable in a first direction and/or second direction, said first direction parallel with said longitudinal axis and said second direction perpendicular to said longitudinal axis.
The present invention also provides an apparatus for securing construction material to be lifted, comprising a housing having a first end, a second end, and a body therebetween extending along a longitudinal axis; a top end secured to said first end, said top end including a flange extending from said first end along said longitudinal axis; said flange including a projection for securing a lifting member thereto; said housing second end configured to receive a lug from a piece of construction material therein; and said housing body including at least one opening to receive a fastener for securing said lug to said housing body, wherein said apparatus and said construction material can be lifted and moved by said lift member once secured thereto; wherein said fastener is removable after said construction material is lifted and moved from an uninstalled position to an installed position.
The present invention further provides a structure forming a portion of a modular cooling tower, comprising a rectangular framework of the structure including vertical members each having a top end and a bottom end and an axis in the vertical direction; a fitting lug projection extending from at least one of said vertical members top end along said vertical axis; and a receiving lug on at least one of said bottom end of said vertical members; wherein said fitting lug projection is sized to be fitted with a complementary receiving lug of a second structure to secure said rectangular framework to said second structure, and wherein said receiving lug is sized to be fitted with a complementary fitting lug of a third structure to secure said rectangular framework to said second structure. The fitting lugs may be received within a lift member on a lifting device and secured thereto such that said lifting device may raise, lower, move or any combination thereof said structure from an uninstalled position to an installed position. The rectangular framework of the structure may further include horizontal members secured to said vertical members to form the rectangular framework, said horizontal members and said vertical members further including a plurality of repeating bolt hole patterns comprising a plurality of connection points such that one or more dimensions of said rectangular framework may be constructed. The fitting lug projection may optionally include an alignment block.
The present invention also provides a structure forming the lower portion of a single cooling tower cell, comprising a plurality of foundation beams each comprising an elongated member having a longitudinal axis, a first end, a second end opposite said first end, a top surface, and a bottom surface opposite said top surface, said top surface and said bottom surface extending along said longitudinal axis between said first end and said second end, said top surface including securing members extending in a direction perpendicular to said top surface, and an anchor footing on each of said first end and said second end, said anchor footing including a flange extending from said bottom surface; and a first framework structure of the single cooling tower cell, comprising a rectangular framework structure including vertical members each having a top and a bottom end and an axis in a vertical direction, and receiving members on said bottom end of said vertical members, wherein said receiving members are sized to be fitted with said securing members of at least one of said plurality of foundation beams to secure said first framework structure to the at least one of said plurality of foundation beams; wherein said plurality of foundation beams may be placed across a width of a cooling tower basin footing such that said flange portion may retain an edge of said basin footing thereon to secure said plurality of foundation beams to said cooling tower basin. The first framework structure may further include fitting member projections extending from said vertical member top end along said vertical axis, wherein said fitting lug projections are sized to be fitted with complementary receiving members of a second framework structure to secure said first framework structure to said second framework structure. The rectangular framework of the structure further includes horizontal members secured to said vertical members to form the rectangular framework, said horizontal members and said vertical members further including a plurality of repeating bolt hole patterns comprising a plurality of connection points such that one or more dimensions of said rectangular framework may be constructed.
The present invention further provides a method of installing a subassembly of a modular cooling tower cell within a cooling tower field in-situ, comprising (a) providing at a first location a first framework structure of the modular cooling tower cell, comprising a rectangular framework structure including vertical members each having a top and a bottom end and an axis in the vertical direction, fitting lug projections extending from said vertical member top end along said vertical axis, and receiving lugs on said bottom end of said vertical members, wherein said fitting lug projections are sized to be fitted with complementary receiving lugs of a second structure to secure said first framework structure to said second framework structure, and wherein said receiving lugs are sized to be fitted with complementary receiving lugs of a third structure to secure said first framework structure to said third structure; (b) installing, at said first location, media fill, distribution piping, or both within said first framework structure; (c) moving said first framework structure to a second location and installing said first framework structure, such that said first framework structure forms said subassembly of said modular cooling tower cell; and (d) connecting said distribution piping to an existing inlet piping and pumps within said cooling tower field.
The features of the invention believed to be novel and the elements characteristic of the invention are set forth with particularity in the appended claims. The figures are for illustration purposes only and are not drawn to scale. The invention itself, however, both as to organization and method of operation, may best be understood by reference to the detailed description which follows taken in conjunction with the accompanying drawings in which:
In describing the embodiment of the present invention, reference will be made herein to
The present invention incorporates a method of manufacture and installation for one or more cooling tower cells within a cooling tower field. The effectiveness and efficiency of a cooling tower field is often dependent upon the integrity of the structural frame members and mechanicals within one or more cells. Prior art methods of cooling tower replacement require the entire replacement of a cooling tower field 2000a, 2000b, 2000c, since the use of preexisting distributions systems cannot be reused upon replacement of one or more cells within a field. The present invention is not so restricted and may utilize mechanicals of an original system including inlet piping and pumps, fan stack, fan assembly and hub, torque tube, gear box, motor and other related mechanical equipment. This not only reduces installation costs and materials but ensures the continued reliability of the system as a whole.
In contrast to prior art replacement of cooling towers, which utilize existing vertical member-construction foundation columns 1001 for replacement of one or more cells (see
With reference to the
Turning now to
The structural framework section 200 of
The embodiments of the cooling tower cell of the present invention allow for manufacture and assembly of cell modules before shipping to a construction site for installation. Unlike the methods of conventional cooling tower cell assembly, the modules of the present invention may be fabricated using specific, pre-determined dimensions which may vary on a project-by-project basis to allow for the custom cell design which reproduces the former cell's dimensions to remove the need to completely replace water inlet distribution systems and related pumps of the former cell. Thus, the design of the present invention may be adapted to any size or shape to accommodate replacement of one or more cooling tower cells of varying basin sizes, cell structure, and key elevations within the cooling tower cell which accommodate for structural components, such as fill, header pipe, or decking. These variations may be performed prior to modules arriving to site. The salient features of the cooling tower cell manufacture of the present invention allow accommodation of existing cell mechanicals within the replaced cell reducing labor expenses and material requirements.
Turning now to
Enclosing the module 20 matrix along the length L are a plurality of longitudinal members 21 which may be secured to the vertical member 22 along the height H of the vertical member via fasteners, welding, or any other connection means known in the art. Connecting the module 20 framework along the matrix width are a plurality of transverse members 29, and may be similarly secured to via fasteners, welding, or other means to the vertical members 22, longitudinal members 21, or both. To ensure the stability of the module framework, the present invention utilizes brace members 26 spanning between intersections within the matrix created by one or more horizontal members, i.e., longitudinal members 21 or transverse members 29, and vertical members 22 of the module framework 20, an example of which is depicted in
As seen in
Unlike the brace configuration of prior art modules, particularly with respect to those of U.S. Pat. No. 9,739,069 issued to Jiang et al. on Aug. 22, 2017, titled, “METHOD OF ASSEMBLING COOLING TOWERS”, the bracing configuration of the modules of the present invention do not form triangular structures, rather trapezium structures which are preferentially right trapezoids formed from the connection of the bracing members 26 spanning adjacent intersections i1, i2 constructed from the vertical and horizontal members forming the module. Generally, the vertical members 21 of the module form the altitude portion of the trapezium, with brace 26 forming the leg and horizontal member 21, 29 forming the longest base portion. The length of the horizontal member between the vertical member 22 and one through hole 82a form the second, shorter base of the trapezium connection of the module 20. The trapezium structure of the present invention creates a truss-like structure throughout the modules 20 which make up the final cooling tower cell, and provide the entire cooling tower cell with an integral structure that is specifically designed to withstand wind and seismic loads to the final cell after complete installation. It should be understood by a person of skill in the art that the interior angles a1, a2 forming the trapezium may vary depending on the dimensions of the vertical and horizontal members as well as the brace members, as an object of the present invention is to provide dynamic, adjustable modules which may be designed to replace one or more cooling tower cells within a field.
Turning to
An embodiment of the present invention makes use of modular male and female lugs to secure and install the modular cooling tower cell. The male lugs are of generally square construction, though other geometries for the lugs are not meant to be precluded. Each of the male lugs include a series of holes or openings and may be on one or more faces of the male lugs, such that a bolt may be received within the openings. The male lugs of the present invention are intended to be received within female lugs during construction. These female lugs are of a slightly large yet complementary structure, to enable the male lugs to be received. The female lugs additionally include complementary openings so that upon receipt of the male lug within the female lug, a bolt or other fastening component may be received within the male/female holes, securing the members thereto. In some embodiments, the mating connector 24 of the module 20 may include an alignment block 124, which may be integral with the mating connector 24 or of a separate construction which may be inserted within and detachable from the mating connector 24. As depicted in
With reference to the
The modular construction of the present invention allows for construction of critical components of the cooling tower at different locations, one such location being at the site, and the other(s) at off-site facilities. The method further allows for modules of specified dimensions such that the cooling tower cell replaced may utilize existing inlet water piping and pumps of the former cooling tower cell which is to be replaced. With the assistance of a digital computer, which may include computer aided design (CAD) software and a database of modular cooling tower solutions, a data set unique to the cooling tower cell to be replaced may be generated which includes every parameter and dimension of the design elements forming the basis of the modules and other structures forming the modular cooling tower cell. These can include basin size data, cell size data, key elevations such as fill, header pipe, deck, etc. Utilizing the data set, manufacture of the modules may be customized on a job-by-job basis while allowing for the changing of parameters to expand or contract any dimension of the module to be built so that large scale changes which may occur at a second project or mid installation of a single project may be accomplished without further complicating the fabrication process of the modules or any other structures forming the modular cooling tower cells of the present invention.
The modular cooling towers of the prior art are lacking in that they cannot expand or contract dimensions of their modules to supply a cooling tower cell which would allow for the usage of a former cooling tower cells inlet piping and pumps. The present invention overcomes these deficiencies, allowing for an implemented design component which allows a cooling tower cell owner to replace a single cell, or even a plurality of cells in a bank, while simultaneously maintaining critical and expensive mechanical equipment of the preexisting cell after the installation of the modular cooling tower of the present invention. The design implementation allows for construction of modules which would accommodate any header pipe height of an existing cooling tower cell or bank across a plurality of installation sites. The plurality of designs is accomplished, in particular, using the consistent and single hole pattern 82 throughout the entire module structure. The single hole pattern 82 throughout the vertical and horizontal members of the module structure facilitates a plurality of connection points between brace member 26 and the rest of the module structure which facilitates rotation about the single hole pattern 82, almost acting as a pivot point during the design process, allowing for alteration of the connective angles a1 and a2 throughout a module structure without refabricating the hole design. The single hole pattern 82 therefore implements efficient automation and robotic fabrication when used with a design algorithm that is capable of expanding and/or contracting the dimensions of the framework members which create the module without the need to recreating a preexisting cell's dimensions at a modular scale. Unlike the modular cooling towers of the prior art, the hole pattern throughout the module structures of the modular cooling towers of the present invention allow for dynamic changes to the dimensions of the framework members which comprise the modules without changing any design considerations during assembly of the modules. Thus, design algorithm of the present invention allows for the design, fabrication, and assembly of modules forming a modular cooling tower cell which can be resized to any dimension without the need to significantly alter installation methodology to ensure the modular cooling tower cell of the present invention may accommodate the inlet water piping and associated pumps of the cooling tower cell which is being replaced. The design modality of the present invention ensures that a modular cooling tower cell may be constructed of any dimension which would allow the utilization of the former (replaced) cell's inlet piping and pumps.
After a cooling tower cell, which is in need of replacement, is selected and the data set has been generated, the method of fabrication of the present invention uses an algorithm to generate a module matrix of relevant dimensions which will form the structure of the modular cooling tower cell of the present invention. By way of example, the algorithm of the present invention may determine a preexisting cell having dimensions corresponding to a length L1, width W1 and Height H1. Included in the data set for the preexisting cell are a measured fill media height FH, main header height MH, drift eliminator layer DE, and a deck height DH. Utilizing the design algorithm of the present invention, a modular cell may be designed for construction in accordance with the example cell plan depicted in
The construction method of the embodiments shown for the present invention need not use any specialized equipment to lift and move the structure to a position of installation for the cooling tower cell. However, in one embodiment of the present invention the method is efficiently and effectively carried out in part using a lift device connected by cables 55, for example four cables, to spreader platform 50 that is capable of supporting, balancing, and lifting a structure by lift members 40. As depicted in
As best shown in
Usage of the lifting lug during construction of the cooling tower cell of the present invention can be seen as depicted in
The spreader platform of one or more embodiments of the present invention is shown best in
On the top surface of the carrier beams are at least a pair of platform connectors, such as eyelets 56, spaced to evenly balance the load and adapted to be connected to lifting cables of a lifting device. The platform eyelets 56 are preferably welded to the carrier beams 53, though they may similarly be attached through bolts and nuts, or other similar materials known in the industry. Shackles and clevis pins are utilized to connect the platform eyelets 56 to the cables 55, which are in turn connected to the lifting device. The spreader platform 50 also includes a plurality of longitudinally spaced transverse lift beams 51 spaced along the length of and generally perpendicular to and supported by the carrier beams 53. The transverse lift beams are of a similar construction to the carrier beams 53. The carrier beams 53 may be further supported by one or more brace beams 54, spaced along the length of and generally perpendicular to the carrier beams 53, such that the brace beams 54 support the load to be lifted by spreader platform 50, and also provides structural stability and integrity, allowing large loads to be lifted by the spreader platform 50 without exhibiting undue torque forces that could otherwise twist the platform. In one aspect of the invention depicted at
After deconstruction of an existing cooling tower cell, while other cooling tower cells within the field or bank remain in place, horizontal foundation beams 5 are placed to form the footing support for the modular cooling tower cell during installation. The placement of these beams provides for a complete footing of one modular tower cell while maintaining (and not deconstructing) the adjacent cooling tower cell(s) within the field. As shown in
To move foundation beams 5 into position across the basin 1, the lift members 40 of the spreader platform 50 are secured to one or more foundation beams 5 by securing each of the lift members 40 to column splices 6 of the foundation beam 5 so that foundation beam 5 may be lifted by the spreader platform 50 and moved over the basin footing structure 1. As shown in
The fabrication and assembly of this new footing platform, formed by the securing of foundation beams 5 to the basin footing alleviates the need to deconstruct multiple cooling tower cells in order to replace the newly added single cooling tower module, and allows for the construction to occur in-situ, or during operation of the remainder of the cooling tower field.
After completion of the airflow module layer 110 and basin section 100, the remaining structural framework section 200 may be constructed in a manner similar to placement of the airflow module layer 110. Spreader platform 50 and lift members 40 are secured to the module forming subsequent layers of structural framework section 200 (e.g., fill media module layer 210, distribution module layer 220, and/or drift eliminator layer 230) via complementary male/female lug interconnection of the module lugs 24 and lift members 40, and the lifting device subsequently raises and moves the second module 30 into the position above the first module 20. As shown in
The modules 20 forming any module layer may be secured to adjacent modules via fasteners such as a carriage bolt or threaded rod to prevent racking during construction and improve the rigidity of the structure. In one embodiment, adjacent modules may be secured together via a strut block, as depicted in
After completion of the cell basin section 100 and structural framework section 200, the stack section 300 may be completed, and the water distribution system 201 of the modular cell can be connected to the inlet piping of the former cooling cell. The mechanicals may include equipment such as the fan stack, fan assembly and hub, torque tube, gear box, motor and other related mechanical equipment, and may be equipment recycled from the former cooling tower cell, if desired. The customizable dimensions of the modular cooling tower of the present invention thus allow retrofitting existing mechanicals. Due to the modular construction of the cooling tower described herein and utilization of former cooling tower cell mechanicals, the time needed to construct a fully operational cooling tower cell is significantly decreased, which minimizes downtime within the cooling tower field. After the mechanicals have been installed, the exterior of the cooling tower structural framework section 200 is wrapped with siding 61, which may be of sheet metal construction or fiberglass siding to further improve the insulation of the cooling tower during operation to improve efficiency. After completion of siding 61, other miscellaneous components such as structural safety components are added to the cooling tower. Once fully constructed, the cooling tower may be finally connected to the prior cooling tower field 2000, as depicted in
The method of construction and manufacture of the present invention is an improvement over prior methods of installation. The method of the present invention allows manufacture and assembly work on the replacement tower to be ongoing at the manufacture site while the site is being readied at the second location. Unlike prior art construction of cooling towers, the present invention can replace a single cooling tower in-situ in as little as six (6) weeks. Much of this time (about four weeks) is factory assembly time for the modular cooling towers of the present invention, requiring as little as two (2) weeks to complete site assembly. Similarly, the spreader platform and lift members of the present invention allow for assembly of a modular, custom created cooling tower cell which may be replaced in-situ during operation of an existing cooling tower field. Once the foundation beams are installed, the lift members may be removed from the modular construction, thereby allowing a quick and secure means to install (and stack) further modular construction pieces. Due to the modular construction, the present invention can be retrofit with existing mechanicals, allowing alignment with a previous pump system, eliminating the need to replace existing systems. The modular bolt holes throughout the entire lug structure allow for efficient automation and robotic fabrication, and the modular design philosophy of the present invention may modularize any existing cooling tower cell of any dimension. Thus, the present invention allows in-situ construction achieved with the elimination of basin anchored, vertical columns, which normally operate in a live water basin. The modular cooling tower of the present invention further improves thermal performance, site safety, quality and achieves reduced field construction.
While the present invention has been particularly described, in conjunction with one or more specific embodiments, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. It is therefore contemplated that the appended claims will embrace any such alternatives, modifications and variations as falling within the true scope and spirit of the present invention.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CA2022/050575 | 4/13/2022 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2023/197055 | 10/19/2023 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 2794336 | Ballou | Jun 1957 | A |
| 3787020 | Avery | Jan 1974 | A |
| 3993341 | Bentley | Nov 1976 | A |
| 4712697 | McGowan | Dec 1987 | A |
| 5902522 | Seawell | May 1999 | A |
| 6991274 | Brooks | Jan 2006 | B2 |
| 8297344 | Vouche | Oct 2012 | B2 |
| 8578680 | Abeln et al. | Nov 2013 | B2 |
| 8984842 | Muder | Mar 2015 | B2 |
| 9091485 | Bugler, III et al. | Jul 2015 | B2 |
| 9145285 | Finfrock | Sep 2015 | B1 |
| 9739069 | Jiang et al. | Aug 2017 | B2 |
| 10101100 | Powell et al. | Oct 2018 | B2 |
| 10302377 | Powell | May 2019 | B2 |
| 10495391 | Speckin et al. | Dec 2019 | B2 |
| 10907900 | Bugler et al. | Feb 2021 | B2 |
| 10982904 | Bugler et al. | Apr 2021 | B2 |
| 11035594 | Liebendorfer et al. | Jun 2021 | B2 |
| 11079187 | Rasmussen et al. | Aug 2021 | B2 |
| 11131507 | Bugler, III et al. | Sep 2021 | B2 |
| 11306970 | Klaba | Apr 2022 | B2 |
| 20040025466 | Hink et al. | Feb 2004 | A1 |
| 20060053727 | Bland | Mar 2006 | A1 |
| 20150130092 | Powell | May 2015 | A1 |
| 20170002583 | Jiang | Jan 2017 | A1 |
| 20170003087 | Jiang | Jan 2017 | A1 |
| 20170003088 | Jiang et al. | Jan 2017 | A1 |
| 20190048601 | Jablonsky | Feb 2019 | A1 |
| 20190170459 | Rasmussen | Jun 2019 | A1 |
| 20190309966 | Klaba | Oct 2019 | A1 |
| 20200158438 | Nevins et al. | May 2020 | A1 |
| 20210372116 | Hillenburg | Dec 2021 | A1 |
| 20230151621 | Sollenberger | May 2023 | A1 |
| Number | Date | Country |
|---|---|---|
| 3081684 | Jun 2019 | CA |
| 103863938 | Sep 2015 | CN |
| 3004777 | Apr 2016 | EP |
| 1419623 | Dec 1975 | GB |
| 20160042183 | Apr 2016 | KR |
| Entry |
|---|
| SPX Cooling Technologies, Inc., “Cooling Solutions for Chemical Process Plants” Process Cooling Magazine, Apr. 2017 <https://www.spxcooling.com/news/cooling-solutions-for-chemical-process-plants/>. |
| PCT International Search Report and Written Opinion for International Application No. PCT/CA2022/050575 dated Nov. 15, 2022. |
| Number | Date | Country | |
|---|---|---|---|
| 20240102306 A1 | Mar 2024 | US |
