Guide pipe inner pressure and displacement combined loading testing device

Abstract

The invention provides a guide pipe inner pressure and displacement combined loading testing device. The guide pipe inner pressure and displacement combined loading testing device comprises a test specimen fixing device, a test specimen axial deflection device and a displacement load applying device, wherein the test specimen fixing device is used for fixing the lower end of a to-be-tested test specimen; a test specimen lateral deflection limiting device is arranged on the test specimen fixing device and is used for limiting the lateral deflection of the to-be-tested test specimen; the displacement load applying device is connected with the test specimen lateral deflection limiting device and is used for applying axial load to the to-be-tested test specimen by the test specimen lateral deflection limiting device. The guide pipe inner pressure and displacement combined loading testing device can meet the thrust displacement and inner pressure static test loading requirement for an inner pressure conveying pipeline, not only reduces the test installation difficulty and the work load, but also effectively improves the test implementation efficiency, and enhances the test to be developed smoothly.

Description

technical field [0001] The invention relates to a strength environment test, in particular to a combined loading test device for internal pressure and displacement of a conduit. Background technique [0002] Low-temperature liquid delivery and high-temperature gas pressurization in low-temperature propellant launch vehicles will cause the pipeline system to shorten and elongate due to temperature. However, the transportation and pressurization pipelines of the launch vehicle are long and have special-shaped structures. The compression or elongation of the temperature pipeline will concentrate all the stress on the local position of the pipeline, making it a weak point for the pipeline to be stressed. In severe cases, it will cause Propellant or pressurized gas leaks, and arrows are destroyed. The temperature expansion and contraction of the whole system of the pipeline can be determined through theoretical calculation during pipeline design, but the force situation of the l...

AI Technical Summary

Problems solved by technology

[0002] Low-temperature liquid delivery and high-temperature gas pressurization in low-temperature propellant launch vehicles will cause the pipeline system to shorten and elongate due to temperature.

However, the transportation and pressurization pipelines of the launch vehicle are long and have special-shaped structures. The compression or elongation of the temperature pipeline will concentrate all the stress on the local position of the pipeline, making it a weak point for the pipeline to be stressed. In severe cases, it will cause Leakage of propellant or pressurized gas, fatal arrows

The temperature expansion and contraction of the whole system of the pipeline can be determined through theoretical calculation during pipeline design, but the force situation of the local position of the pipeline is generally difficult to analyze and simulate

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