System and method for testing stress, displacement and airtight performance in ultra-low temperature surroundings

A technology of environmental stress and testing system, applied in the direction of using liquid/vacuum for liquid tightness measurement, force measurement, measurement device, etc., can solve problems such as restricting the development of sealing research and lack of testing means.

Active Publication Date: 2009-07-22
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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Problems solved by technology

With the in-depth study of the sealing principle, it is required to accurately grasp the relationship between the sealing surface stress, deformation and other parameters of the studied sealing structure in the ultra-low temperature environment and the structural sealing. The development of sealing research in this field

Method used

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  • System and method for testing stress, displacement and airtight performance in ultra-low temperature surroundings
  • System and method for testing stress, displacement and airtight performance in ultra-low temperature surroundings
  • System and method for testing stress, displacement and airtight performance in ultra-low temperature surroundings

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Embodiment Construction

[0029] Such as figure 1 As shown, the test system for stress displacement and airtight performance in ultra-low temperature environment includes air source 1, working pressure control system 2, sealing load loading system 3, temperature environment guarantee system 4, sealing leak detection system 6, air source 1 and working pressure The control system 2 is connected through the air pipe; the working pressure control system 2 is connected to the medium input port of the sealing test tool 5 through the air pipe, and the sealing leak detection system 6 is connected to the leak detection port of the sealing test tool 5 through the air pipe, and the sealing test tool 5 is placed at temperature In the environment guarantee system 4 , the temperature environment guarantee system 4 is placed on the workbench of the sealed load loading system 3 .

[0030] The gas source 1 can be the direct pressure working medium provided by the gas cylinder, or the pressure working medium indirectly ...

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Abstract

The invention relates to a system and a method for testing ultra-low temperature environmental stress, displacement and air tightness. The test system comprises an air source, a working pressure control system, an airproof stress loading system, a temperature environment guarantee system and a sealed leak detection system. The invention can achieve normal/low-temperature air tightness detection, can achieve compressive stress detection, and can achieve detection of compressive displacement and detection of the relation between the environmental stress, the displacement and the air tightness.

Description

technical field [0001] The invention relates to a testing system and testing method for stress, displacement and airtight performance in an ultra-low temperature environment, belonging to the field of sealing performance testing in an ultra-low temperature environment. Background technique [0002] In the usual sealing test, when designing the sealing stress loading, the bolt loading method is generally used to provide the sealing force on the sealing structure. The control of the sealing stress can only be realized indirectly by controlling the assembly torque, and the accurate value of the sealing stress cannot be obtained; at the same time, The deformation of the sealing surface cannot be grasped during the test. It cannot meet the need of accurate measurement of the sealing characteristics of the sealing structure in the sealing research, which limits the in-depth implementation of the sealing research work. [0003] In addition, when conducting structural sealing perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26G01B21/32G01L1/00
Inventor 谢小兵王立峰陈鑫陈风波田新
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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