Testing device for cryogenic property of thermal-insulation support rods for cryogenic equipment and testing method of testing device
A testing device and low-temperature performance technology, which is applied in the measurement device, using stable tension/pressure to test the strength and strength characteristics of materials, etc., can solve the problems of inability to meet the performance testing requirements, inability to test heat leakage, etc., and achieve an ingenious and reliable structure. , the effect of reducing stiffness
Active Publication Date: 2017-12-15
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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Problems solved by technology
[0003] At present, the low-temperature performance test devices provided by domestic testing machine factories are generally transformed from universal testing machines, and can only test the strength in a liquid nitrogen environment (77K), and cannot test heat leakage
For some equipment used at a temperature of 30K, the test device obviously cannot meet the performance test requirements
Method used
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[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0029] refer to Figure 1 to Figure 7 As shown, the present invention discloses a low-temperature performance testing device for a support heat insulation rod for low-temperature equipment, including a base 13, a vacuum container 1, an axial installation part and a radial installation part arranged in the vacuum container 1, and the vacuum The container 1 and the base 13 are fixed on the test platform.
[0030] The vacuum container 1 includes a box body 101 and a cover plate 103, a second O-ring 102 is arranged between the box body 101 and the cover plate 103, and the cover plate 103 is installed through the box body and the cover plate The bolts 104 , the box body and the cover mounting gasket 105 are fixedly connected to the box body 101 . The box body 101 includes a frame 1011, a vacuum joint 1012, an aviation socket 1013 and a refrigerator cold head sea...
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The invention discloses a testing device for the cryogenic property of thermal-insulation support rods for cryogenic equipment. The testing device comprises a base, a vacuum container, an axial mounting assembly and a radial mounting assembly, wherein the axial mounting assembly is mainly used for providing axial tension; the radial mounting assembly is mainly used for providing a cryogenic environment; the axial mounting assembly comprises a first thermal-insulation support rod, a cold plate, a second thermal-insulation support rod, a loading pull rod and a loading device, and a one-way or three-way cryogenic strain gauge and a one-way or three-way normal-temperature strain gauge are arranged on the first thermal-insulation support rod and the second thermal-insulation support rod respectively; the radial mounting assembly comprises a thermal-insulation support seat located in the vacuum container, the cold plate, a cold bridge device and a refrigerator cold head, and a heating piece is arranged on the refrigerator cold head. The invention further discloses a testing method of the testing device. The testing device is ingenious and reliable in structure and meets the testing requirements for mechanical property and heat leakage of the thermal-insulation support rods for the cryogenic equipment, and a testing result of the testing device can provide technical support for overall design of the cryogenic equipment.
Description
technical field [0001] The invention belongs to the technical field of material performance testing, and in particular relates to a low-temperature performance testing device and a testing method for a supporting heat-insulating rod for low-temperature equipment, which is used for simulating and assessing the strength of a supporting heat-insulating rod for low-temperature equipment at low temperatures in a low-temperature vacuum environment and leak heat. Background technique [0002] For some equipment operating at deep low temperature, it is usually placed in a low-temperature environment with thermal insulation and vacuum, and it is connected with structural members at normal temperature by using support insulation rods. The supporting insulation rod is a key part of cryogenic equipment, which plays the role of heat insulation, bearing the weight of the equipment and bearing a certain load. Therefore, the requirements of strength and heat leakage should be taken into acc...
Claims
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IPC IPC(8): G01N3/18G01N25/00
CPCG01N3/18G01N25/00G01N2203/0019G01N2203/0048G01N2203/0228
Inventor 周勇叶志刚代义军郑军
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST