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Cryogenic vessel multi-performance test device and test method

A low-temperature container and test device technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of large investment, inability to carry out tests on containers, and complicated systems, and achieves improved performance, safe and reliable control and operation. Method and equipment simple effect

Inactive Publication Date: 2015-10-28
DALIAN UNIV OF TECH
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Problems solved by technology

The process of utility model patent CN2518102 requires a pressure source to pressurize one inlet of the container, and another outlet to release pressure, so it is impossible to test the container with only one inlet and outlet
The utility model patent ZL 200620102510.0 is composed of multiple pressure lifting systems to complete the pressurization, pressure maintenance and pressure relief operations. It has multiple superchargers, reversing valves, pressure gauges, and sensors. The system is complex. Although multiple air-driven high-pressure pumps Boost speed can be accelerated, but the investment is larger

Method used

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  • Cryogenic vessel multi-performance test device and test method

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The cryogenic container multi-performance test device mainly includes a fluid storage 1, a piston accumulator, an insulated box 10, an electromagnetic three-position four-way reversing valve 5, two one-way valves, and a normally open electromagnetic overflow Flow valve 2, a motor pump unit 4, a high-pressure air source 17, an air-driven pump 16, a hoisting device, multiple pressure display and test devices, as well as a device for circulating the fluid during the period, connecting the pressure vessel under test and the fluid The pipeline system of the reservoir is composed, wherein the control center 18 controls the electromagnetic three-position four-way reversing valve 5 and the electromagnetic overflow valve 2 according to the measured pressure signal.

[0029] The piston type accumulator is a double-cylinder structure including a hydraulic cylinder and a ...

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Abstract

The invention discloses a cryogenic vessel multi-performance test device and test method and belongs to the technical field of test equipment. A piston type energy accumulator comprises a double-cylinder structure of a hydraulic cylinder and a liquid nitrogen cylinder. The liquid nitrogen cylinder is installed in a heat-preserving box (10). A piston connection rod (8) of the hydraulic cylinder perpendicularly penetrates through the bottom face of the heat-preserving box (10) in a normal temperature state. The upper end and the lower end of the piston connection rod (8) are connected with a liquid nitrogen cylinder piston (72) and a hydraulic cylinder rod (71) respectively. A multi-pipeline system is connected with a fluid storage (1), a motor pump set (4), a high-pressure gas source (17), a gas-driving pump (16) and a tested pressure vessel. The requirement that a liquid nitrogen temperature zone completes multi-performance tests on pressure vessels on one device platform is met.

Description

technical field [0001] The invention belongs to the technical field of inspection equipment, relates to a pressure vessel inspection device, and is particularly suitable for the temperature cycle test of pressure vessels under liquid nitrogen low temperature, the temperature-pressure cycle test detected by fluid pressure method, and the method of low temperature blasting test. Background technique [0002] For pressure vessels used under extremely low temperature conditions, in order to examine their overall safety performance, it is necessary to use temperature cycle tests, pressure cycle tests, and low temperature blasting tests to examine their overall safety performance. The temperature cycle test is a cycle process of repeated normal temperature-liquid nitrogen temperature zone for the unpressurized test container; the pressure cycle test is the process of repeated liquid nitrogen temperature zone-boosting-holding-pressure release-normal temperature process for the test ...

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Application Information

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IPC IPC(8): G01N3/18
Inventor 由宏新郭忠欣周一卉刘润杰
Owner DALIAN UNIV OF TECH
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