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US 4,108,476 AGranted
Precompressed piping system for handling cryogenic fluid
OwnerWalter H. Kruppinventor
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OwnerWalter H. Kruppinventor
Estimating the term…
A piping system comprising an inner pipe for carrying fluid and an outer pipe forming a thermal insulation jacket for the inner pipe. The pipe line is formed in sections which are joined together by means of flange members in a manner so as to provide longitudinal compression of the inner pipe such that when the cryogenic fluid is run through the inner pipe and the walls of this pipe contract with the reduction in temperature, minimum stress is placed on the pipe with such contraction, thereby avoiding damage thereto or the formation of leaks therein. Each section is bent to form angulated legs, the bent or elbow portions operating to take most of the precompression. The precompression is achieved in a simple yet highly effective manner by providing a flange on the outer pipe having a circle of fastening means for use in clamping flanges on the ends of the inner pipe sections to each other and to the outer pipe flange, at the same time compressing the inner pipe.
In a piping system having a plurality of inner pipe sections joined together to form a conduit for carrying fluid and a plurality of outer pipe sections joined together to form an insulating jacket for the inner pipe sections, wherein the improvement includes means at each joinder between pipe sections for precompressing said pipe sections, comprising:
Dependencies are inferred from the claim text.