[특허]Container for holding a cryogenic fluid

Westport Power Inc.

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특허 상세정보

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Container for holding a cryogenic fluid

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F17C-001/12 F17C-001/00
미국특허분류(USC)	220/560.09; 220/560.1; 220/062.18
출원번호	US-0950305 (2004-09-23)
등록번호	US-7344045 (2008-03-18)
발명자 / 주소	Harper,Gregory C. Gish,Justin
출원인 / 주소	Westport Power Inc.
대리인 / 주소	McAndrews, Held & Malloy, Ltd.
인용정보	피인용 횟수 : 4 인용 특허 : 26

초록
▼

A double-walled vacuum-insulated container for holding a cryogenic fluid comprises a support structure for supporting an inner vessel within an outer vessel. The container has an elongated horizontal axis. A conduit extending between the inner and outer vessels has a wall thickness that allows the conduit to carry a substantial portion of axial loads acting on the inner vessel in a direction parallel to the horizontal axis. The support structure further comprises a non-metallic support spanning between the inner and outer vessels, with the non-metallic support capable of transferring substantially all radial loads transverse to said horizontal axis. The non-metallic support is also fixedly attached to the inner and outer vessels so that it is capable of supporting a substantial portion of the axial loads so that the non-metallic support and the conduit cooperate to provide support in the axial direction.

대표
청구항
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What is claimed is: 1. A container for holding a cryogenic fluid, said container comprising: (a) an inner vessel defining a cryogen space and having a horizontal elongated axis; (b) an outer vessel surrounding said inner vessel, defining an evacuatable space between said outer vessel and said inner vessel; and (c) a structure for supporting said inner vessel within said outer vessel, wherein said structure is designed to carry up to a predetermined axial load in a direction parallel to a horizontal axis, and up to a predetermined radial load in directions transverse from said horizontal axis, said structure comprising: a conduit attached at a first point to an inner vessel support bracket associated with said inner vessel, and attached at a second point to an outer vessel support bracket for said outer vessel, said conduit carrying a substantial portion of said predetermined axial load and wherein said cryogenic fluid can be conveyed into and/or out of said cryogen space through said conduit; at least one non-metallic support spanning between said inner vessel and said outer vessel, said non-metallic support providing a bearing surface associated with respective opposite facing surfaces associated with said inner vessel and said outer vessel for transferring substantially all radial loads transverse to said horizontal axis from said inner vessel to said outer vessel, and wherein said non-metallic support is fixedly attached to said opposite facing surfaces whereby said non-metallic support also carries a portion of said predetermined axial load; and wherein the collective axial load carrying capacity of said conduit and said non-metallic support is equal to said predetermined axial load. 2. The container of claim 1 wherein said opposite facing surface associated with said inner vessel is provided by said inner vessel support bracket and said opposite facing surface associated with said outer vessel is provided by said outer vessel support bracket. 3. The container of claim 2 wherein said at least one non-metallic support is tubular in shape and said conduit extends through the hollow interior of said at least one non-metallic support. 4. The container of claim 1 wherein said at least one non-metallic support is a first non-metallic support associated with a first side of said inner vessel that is intersected by said horizontal axis and said container further comprises a second non-metallic support associated with a second side of said inner vessel, opposite to said first side, and said first and second non-metallic supports together are sized to provide the strength needed to carry substantially all of said radial loads. 5. The container of claim 4 wherein said second non-metallic support has at least one bearing surface that is slidable in a direction parallel to said horizontal axis relative to said respective opposite facing surface of said inner or outer vessel, whereby said second non-metallic support provides radial support but not axial support. 6. The container of claim 4 wherein: said opposite facing surfaces associated with said first and second sides of said inner vessel are provided by walls of respective cup-shaped inner support structures projecting into said cryogen space; said opposite facing surfaces associated with said outer vessel are provided by walls of opposite cup-shaped outer support structures projecting from said outer vessel and aligned with said cup-shaped inner support structures; and said first and second non-metallic supports each comprise a cylindrical member with a first end disposed in a respective one of said cup-shaped inner support structures and a second end disposed in a respective one of said cup-shaped outer vessel support structures. 7. The container of claim 6 wherein said cylindrical members are hollow so that they are tubular in shape. 8. The container of claim 7 wherein said conduit extends through one of said cylindrical members. 9. The container of claim 6 wherein said inner vessel support bracket is integrated with said cup-shaped inner support structure. 10. The container of claim 6 wherein said outer vessel support bracket is integrated with said cup-shaped outer support structure. 11. The container of claim 1 wherein said at least one non-metallic support comprises a structural member made from a composite material comprising fibres disposed within a plastic matrix. 12. The container of claim 11 wherein said fibres are selected from the group consisting of glass, carbon, synthetic fibres made from a resin, and quartz. 13. The container of claim 11 wherein said plastic matrix is provided by an epoxy resin. 14. The container of claim 13 wherein said epoxy resin has a cure temperature that is greater than 175�� C. 15. The container of claim 11 wherein said plastic matrix comprises bismaleimide. 16. The container of claim 11 wherein said plastic matrix comprises a thermoplastic selected from the group consisting of polyetheretherketone and polyphenylene sulfide. 17. The container of claim 11 wherein said composite material has a TML less than 1 percent. 18. The container of claim 11 wherein said composite material has a CVCM less than 0.1 percent. 19. The container of claim 1 wherein said conduit has a length between said first and second points that provides a heat path between said inner vessel and said outer vessel that is longer than the axial spacing between said inner vessel and said outer vessel. 20. The container of claim 1 wherein said conduit is made from a metallic material and said conduit is welded at said first and second points to said inner vessel support bracket and to said outer vessel support bracket, respectively. 21. The container of claim 1 wherein said conduit spans between said outer vessel and said inner vessel with an alignment that is parallel to said horizontal axis and said conduit bends and slopes downward inside said cryogen space. 22. The container of claim 21 wherein said first point is associated with a location along said conduit where it is sloping downward. 23. The container of claim 21 further comprising a collar support that prevents movement of said conduit in a radial direction near where it bends downwards. 24. The container of claim 23 wherein said collar support is non-metallic. 25. The container of claim 23 wherein said collar support is provided at a location along said conduit where it is sloping downward. 26. The container of claim 1 wherein said at least one non-metallic support has a thermal conductivity less than a substitute support made from a ferrous material with at least the same structural strength. 27. The container of claim 1 where said non-metallic support comprises a thermally insulated support sleeve extending between said outer vessel and said inner vessel, wherein said support sleeve carries a substantial portion of said axial loads. 28. The container of claim 27 wherein said support sleeve comprises: an inner tubular wall spaced apart from an outer tubular wall wherein the space between said inner and outer tubular walls is evacuatable together with said evacuatable space between said outer vessel and said inner vessel; a distal end disposed within said inner vessel with said inner and outer tubular walls joined together and sealed at or near said distal end whereby cryogenic fluid from within said cryogen space is prevented from flowing into the space between said outer and inner tubular walls; and a proximal end associated with said inner vessel and said outer vessel, whereby said inner tubular wall is structurally attached to said outer vessel and said outer tubular wall is structurally attached to said inner vessel. 29. The container of claim 1 wherein said container is mountable on a vehicle, said cryogenic fluid is a combustible fuel, and said container is operable as a fuel tank for supplying fuel to an engine of said vehicle. 30. A container for holding a cryogenic fluid, said container comprising: (a) an elongated inner vessel defining a cryogen space and having a horizontal longitudinal axis; (b) an outer vessel surrounding said inner vessel, defining an evacuatable space between said outer vessel and said inner vessel; (c) a structure for supporting said inner vessel within said outer vessel, wherein said structure is designed to carry up to a predetermined axial load in a direction parallel to a horizontal axis, and up to a predetermined radial load in directions transverse from said horizontal axis, said structure comprising: a metallic conduit extending between an outer vessel support bracket associated with said outer vessel and an inner vessel support bracket associated with said inner vessel, said metallic conduit being fixedly attached to said support brackets and carrying a substantial portion of said predetermined axial load; first and second non-metallic supports associated with opposite first and second sides of said inner vessel, said opposite first and second sides being intersected by said longitudinal axis, said non-metallic supports carrying substantially all loads acting in a radial direction in relation to said longitudinal axis and at least one of said first and second non-metallic supports being fixedly attached to said inner and outer vessels and carrying a portion of said predetermined axial load, each one of said first and second non-metallic supports comprising a non-metallic member extending between said inner vessel and said outer vessel, said non-metallic members each comprising bearing surfaces associated with respective opposite facing surfaces of support structures associated with said inner vessel and said outer vessel; and wherein the collective axial load carrying capacity of said conduit and said non-metallic supports is equal to said predetermined axial load. 31. The container of claim 30 wherein said conduit is fixedly attached to said outer vessel support bracket near said longitudinal axis and the distance between the point where said metallic conduit is fixedly attached to said inner vessel support bracket and the point where said metallic conduit is fixedly attached to said outer vessel support bracket is greater than the distance along the longitudinal axis between said inner vessel and said outer vessel in the proximity of a location where said longitudinal axis intersects said outer vessel.

이 특허에 인용된 특허 (26)

이 특허를 인용한 특허 피인용횟수: 4

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Container for holding a cryogenic fluid

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Container for holding a cryogenic fluid

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이 특허에 인용된 특허 (26)

이 특허를 인용한 특허 피인용횟수: 4

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