Patent Application
20170009915
The present disclosure relates to oil systems, and, more specifically, to a sealing adapter for an oil system.
Fluids or gasses may pass into and out pressurized vessels in mechanical systems such as oil systems in a vehicle. Joints may connect components of the system and may be subject to leakage unless sealed. A variety of joint and seal types may be used, each having strengths and weaknesses. Metal C-seals may have been incorporated in flanges using multiple bolts to crush the C-seal. The bolts may result in uneven crimping of the seal depending on the order in which bolts are tightened down. Threaded connections may use an elastomeric 0-ring seal. However, the elastomeric seal may not be suitable for use in high-temperature environments.
An adapter and seal system may comprise a cylindrical body centered about an axis and a first thread disposed about an outer diameter of the cylindrical body. A protrusion on the cylindrical body may extend radially outward from the cylindrical body with a surface orthogonal to the axis partially defining the protrusion. A circular trench may be formed in the surface and may open in an axial direction towards the first thread. A metallic C-seal may be disposed in the circular trench.
In various embodiments, a wrenching feature may be disposed about an outer diameter of the protrusion. The C-seal may include an opening disposed on an inner diameter of the C-seal. A locking feature may be disposed on the protrusion. A second thread may be disposed about the outer diameter of the cylindrical body with the protrusion located between the first thread and the second thread. A cone seat may be disposed at an axial end of the cylindrical body. The adapter may be configured to distribute crushing load to the C-seal in an axial direction and/or to distribute crushing load evenly about the circumference of the C-seal. The adapter may also comprise an austenitic nickel-chromium-based alloy.
An oil system may comprise a first oil component and an adapter sealably coupled to the first oil component. The adapter may comprise a cylindrical body centered about an axis. A first thread may be disposed about an outer diameter of the cylindrical body. A protrusion on the cylindrical body may extend radially outward from the cylindrical body and be partially defined by a surface orthogonal to the axis. A circular trench may be formed in the surface and open in an axial direction towards the first thread. A metallic C-seal may be disposed in the circular trench and compressed between the adapter and the first oil component.
In various embodiments, the metallic C-seal may include an opening disposed on an inner diameter of the C-seal. A locking feature may be disposed on the protrusion. A second thread may also be disposed about the outer diameter of the cylindrical body with the protrusion located between the first thread and the second thread. A cone seat may be disposed at an axial end of the cylindrical body. The adapter may be configured to distribute crushing load to the C-seal in an axial direction. The adapter may also distribute crushing load evenly about the circumference of the C-seal. A wrenching feature may be disposed about an outer diameter of the protrusion.
A method of sealably coupling an adapter and an oil component may comprise the steps of rotating the adapter about an axis to threadedly engage adapter and a threaded female member of the oil component, and compressing a C-seal disposed in a groove of the adapter in response to the threadedly engaging the adapter, wherein the groove is formed in a surface of the adapter oriented in a plane orthogonal to the axis.
In various embodiments, the method may further include placing the C-seal in the groove with an opening disposed on the inner diameter of the C-seal. The step of compressing the C-seal may also comprise applying a compressive force uniformly about a circumference of the C-seal.
The foregoing features and elements may be combined in various combinations without exclusivity, unless expressly indicated otherwise. These features and elements as well as the operation thereof will become more apparent in light of the following description and the accompanying drawings. It should be understood, however, the following description and drawings are intended to be exemplary in nature and non-limiting.
The subject matter of the present disclosure is particularly pointed out and distinctly claimed in the concluding portion of the specification. A more complete understanding of the present disclosure, however, may best be obtained by referring to the detailed description and claims when considered in connection with the figures, wherein like numerals denote like elements.
The detailed description of exemplary embodiments herein makes reference to the accompanying drawings, which show exemplary embodiments by way of illustration. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the exemplary embodiments of the disclosure, it should be understood that other embodiments may be realized and that logical changes and adaptations in design and construction may be made in accordance with this disclosure and the teachings herein. Thus, the detailed description herein is presented for purposes of illustration only and not limitation. The steps recited in any of the method or process descriptions may be executed in any order and are not necessarily limited to the order presented.
Furthermore, any reference to singular includes plural embodiments, and any reference to more than one component or step may include a singular embodiment or step. Also, any reference to attached, fixed, connected or the like may include permanent, removable, temporary, partial, full and/or any other possible attachment option. Additionally, any reference to without contact (or similar phrases) may also include reduced contact or minimal contact. Surface shading lines may be used throughout the figures to denote different parts but not necessarily to denote the same or different materials.
In various embodiments, metallic C-seals may provide improved sealing when the seal is crimped and/or bent uniformly. The adapter described herein may apply compressive force distributed uniformly about the circumference of a C-seal and thus crimp or bend the C-seal in a uniform manner. The adapter may also direct the compressive force in a direction normal to a sealing surface to increase stability and uniformity during compression of the C-seal. Thus, the metallic adapter and C-seal system may provide sealing in high-temperature application such as heated oil systems.
With reference to
In various embodiments, a wrenching feature 110 may protrude from cylindrical body 102 in a radial direction. Wrenching feature 110 may comprise a polygonal shape to engage a wrench during installation, maintenance, or removal. The configuration and size of wrenching feature 110 may vary. For example, the wrenching feature may be configured in 6-point hexagonal configuration or 12-point configuration. A locking feature may be located on adapter 100. For example, safety cable holes 112 may be defined in a protrusion of wrenching feature 110 from cylindrical body 102.
In various embodiments, male mating surface 116 may be disposed at an opposite end of adapter 100 from cone seat 108 in an axial direction. Male mating surface 116 of cylindrical body 102 may include threads 118 disposed about an outer diameter of cylindrical body 102. A cylindrical passage 120 may be defined by an inner diameter of cylindrical body 102.
In various embodiments, surface 122 may partially define wrenching feature 110 protruding from cylindrical body 102. Surface 122 may be a flat surface oriented coplanar with a radial plane orthogonal to axis A. Surface 122 may define an opening 136 of groove 114 with opening 136 being coplanar with surface 122. Opening 136 of groove 114 may face in an axial direction towards thread 118. Groove 114 may have a distal wall 132 and proximal wall 130. Distal wall 132 and proximal wall 130 may be axisymmetric about axis A and parallel to one another when viewed in cross section as illustrated in
In various embodiments, adapter 100 may be made from metals or metal alloys including steel, titanium, nickel, aluminum, or other suitably rigid materials. For example, adapter 100 may be made from an austenitic nickel-chromium-based alloy such as that sold under the trademark Inconel®, which is available from Special Metals Corporation of New Hartford, N.Y., USA. Groove 114 of adapter 100 may be made by turning using a lathe to achieve the parallelism and flatness of the various features of adapter 100 described herein.
With reference to
In various embodiments, C-seal 200 may be made from metals or metal alloys including steel, titanium, nickel, aluminum, silver, or other suitably rigid materials. For example, C-seal 200 may be made from an austenitic nickel-chromium-based alloy such as that sold under the trademark Inconel®, which is available from Special Metals Corporation of New Hartford, N.Y., USA. The material selected for C-seal 200 may be chosen to provide favorable corrosion characteristics when located in groove 114 of adapter 100 during service.
With reference to
In various embodiments, adapter 100 may also sealably connect with component 312. Component 312 may also be a tubular component or conduit configured to transport a fluid or gas. Thread 118 of adapter 100 may engage female mating surface 308 of component 312. Thread 118 may also urge surface 122 of adapter 100 against surface 310 of component 312 in response to rotation about the axis caused by, for example, rotation of wrenching feature 110, such as rotation of wrenching feature 110 in response to rotation by a wrench or other tool. Surface 310 and surface 122 may lie flat against one another. C-seal 200 may be disposed within groove 314 and thus located between adapter 100 and surface 310 of component 312. As adapter 100 is threaded into component 312, surface 310 may contact C-seal 200 and provide a compressive force as surface 310 and surface 122 come together.
In various embodiments and with reference to
Benefits and other advantages have been described herein with regard to specific embodiments. Furthermore, the connecting lines shown in the various figures contained herein are intended to represent exemplary functional relationships and/or physical couplings between the various elements. It should be noted that many alternative or additional functional relationships or physical connections may be present in a practical system. However, the benefits, advantages, and any elements that may cause any benefit or advantage to occur or become more pronounced are not to be construed as critical, required, or essential features or elements of the disclosure. The scope of the disclosure is accordingly to be limited by nothing other than the appended claims, in which reference to an element in the singular is not intended to mean “one and only one” unless explicitly so stated, but rather “one or more.” Moreover, where a phrase similar to “at least one of A, B, or C” is used in the claims, it is intended that the phrase be interpreted to mean that A alone may be present in an embodiment, B alone may be present in an embodiment, C alone may be present in an embodiment, or that any combination of the elements A, B and C may be present in a single embodiment; for example, A and B, A and C, B and C, or A and B and C.
Systems, methods and apparatus are provided herein. In the detailed description herein, references to “various embodiments”, “one embodiment”, “an embodiment”, “an example embodiment”, etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described. After reading the description, it will be apparent to one skilled in the relevant art(s) how to implement the disclosure in alternative embodiments.
Furthermore, no element, component, or method step in the present disclosure is intended to be dedicated to the public regardless of whether the element, component, or method step is explicitly recited in the claims. No claim element herein is to be construed under the provisions of 35 U.S.C. 112(f), unless the element is expressly recited using the phrase “means for.” As used herein, the terms “comprises”, “comprising”, or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
