Vacuum-insulated double piping for transferring cryogenic fluids
JP7600088B2Active Publication Date: 2024-12-16TB GLOBAL TECHNOLOGIES LTD
Patent Information
- Application Number
- JP2021199512
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-12-08
- Publication Date
- 2024-12-16
- Estimated Expiration
- 2041-12-08
AI Technical Summary
Technical Problem
Conventional vacuum insulated double piping for cryogenic fluid transfer experiences stress and potential breakage at the connecting portion due to the moment generated by internal pressure, which is not effectively managed by the existing bellows mechanism.
Method used
The design incorporates protruding and receiving parts on the inner and outer tubes, respectively, with a heat-insulating member, allowing the inner tube to be immobile under pressure load and reducing the moment effect, while maintaining thermal insulation.
Benefits of technology
This configuration minimizes stress and moment-induced damage at the connection points, preventing breakage and maintaining thermal insulation, even under high internal pressure.
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Smart Images
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Abstract
To provide cryogenic heat insulation double-piping for suppressing the application of the moment to a connection part between an inner pipe and an outer pipe by an inner pressure load, and having a function for preventing the stress damage of the connection part.SOLUTION: Cryogenic heat insulation double-piping comprises an inner pipe 1 including a bellows part 4, and an outer pipe 2 arranged at an external periphery of the inner pipe 1 via a vacuum layer 3, and also has a straight pipe part 5 and an elbow part 6. The bellows part 4 is arranged at an inner-pipe straight pipe part 5a located at the straight pipe part 5, a salient part 7 salient toward the outside is arranged at an inner pipe elbow part 6a located at the elbow part 6 at the outer pipe 2 side, a receiving part 8 abutting on the salient part 7 is arranged at an outer pipe elbow part 6b located at the elbow part 6, and also, an abutment part of at least either of the salient part 7 and the receiving part 8 is constituted of a heat insulation member 9.SELECTED DRAWING: Figure 2
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Citation Information
Patent Citations
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