Precompressed piping system for handling cryogenic fluid

Details Precompressed piping system for handling cryogenic fluid Precompressed piping system for handling cryogenic fluid

1977-04-11

1978-08-22

Stein, Mervin

Pipe joints or couplings

With casing, lining or protector

Insulated

285133R, 285138, 285158, 285363, 285DIG5, F16L 502, F16L 2500, F16L 3904, F16L 5100

Patent

active

041084764

ABSTRACT:
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.

REFERENCES:
patent: 700378 (1902-05-01), Schmidt
patent: 1666495 (1928-04-01), Hodgkinson
patent: 2592574 (1952-04-01), Kaiser
patent: 2823701 (1958-02-01), Burk
patent: 3109671 (1963-11-01), Braun
patent: 3246917 (1966-04-01), Martin
patent: 3471177 (1969-10-01), Garrett et al.

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