Method of analyzing and evaluating stress of high-pressure gas dual-wall tube and elastic support thermal expansion displacement

Abstract

The invention provides a method of analyzing and evaluating stress of a high-pressure gas dual-wall tube and elastic support thermal expansion displacement. Technological parameters of a dual-wall tube are determined according to actual working conditions, so as to design a direction of the high-pressure gas dual-wall tube, an L-shaped pipeline or a Z-shaped pipeline is designed at where the stress is concentrated, so as to compensate and calculate a finite element stress to ensure reasonable deployment of high-pressure gas supply pipelines, whether the stress of the dual-wall tube under the designed working condition and elastic support thermal expansion displacement meet standards and requirements are checked, a high-pressure gas dual-wall tube online stress response test system tests the stress and thermal expansion displacement of a host in startup, running and shutdown and compares the stress and the thermal expansion displacement with a calculated infinite element value, so as tomake the high-pressure gas supply pipeline deployed more reasonably.

Description

technical field [0001] The invention relates to the technical field of stress calculation of a high-pressure gas double-wall pipe, in particular to a method for analyzing and evaluating the stress of a high-pressure gas double-wall pipe and the thermal expansion displacement of an elastic support. Background technique [0002] With the increasingly stringent requirements for emission restrictions, shipowners are paying more and more attention to the economy and cleanliness of ships. At present, the most mature and economical alternative energy is undoubtedly natural gas. With the maturity of the "International Gas Powered Ship Rules", natural gas fueled ships have attracted more and more attention, not only on international voyages of natural gas carriers, but also in large container ships, oil tankers, large ore ships and cruise ships. , Dual-fuel engines and gas engines have also been rapidly developed as new ship power devices. [0003] According to the requirements of r...

AI Technical Summary

Problems solved by technology

However, there is no reasonable analysis and evaluation method in the prior art whether the layout of the high-pressure gas supply pipeline is reasonable, and whether the stress of the double-wall pipe under the design working condition and the thermal expansion displacement of the elastic support meet the specification requirements.

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