Cryogenic vessel multi-performance test device and test method

A low-temperature container and test device technology, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve problems such as large investment, inability to test containers, complex systems, etc., to improve performance, control and operation are safe and reliable, Method and equipment simple effect

Inactive Publication Date: 2017-06-23
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
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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 low-temperature container multi-performance test device mainly includes a fluid storage 1, a piston accumulator, an insulated box 10, a three-position four-way electromagnetic reversing valve 5, two check 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 test container and fluid storage The pipeline system of the device is composed of, wherein the control center 18 controls the three-position four-way electromagnetic 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 liqui...

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Abstract

The multi-performance test device and test method for cryogenic containers belong to the technical field of inspection equipment. The piston accumulator is a double-cylinder structure including a hydraulic cylinder and a liquid nitrogen cylinder. The liquid nitrogen cylinder is installed in the heat preservation box (10), and the hydraulic cylinder In the normal temperature state; the piston connecting rod (8) vertically passes through the bottom surface of the insulation box (10), and the upper and lower ends are respectively connected to the liquid nitrogen cylinder piston (72) and the hydraulic cylinder piston (71); multiple pipeline systems are connected to the fluid storage device (1), motor pump unit (4), high-pressure gas source (17), gas-driven pump (16) and the pressure vessel under test, so as to realize the requirements of multi-performance tests on the pressure vessel in the liquid nitrogen temperature zone on one device platform .

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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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01N3/18
Inventor由宏新郭忠欣周一卉刘润杰
OwnerDALIAN UNIV OF TECH