Low-temperature stretching testing system and testing method
A technique of tensile testing and tensile specimens, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of high testing cost and waste of liquid helium, and achieve the goal of improving efficiency, avoiding waste and reducing consumption. Effect
Inactive Publication Date: 2014-06-25
SOUTHWESTERN INST OF PHYSICS
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Problems solved by technology
The existing low-temperature tensile testing device for materials uses liquid helium for cooling, but there are shortcomings such as serious waste of liquid helium and high testing costs
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[0034] as attached figure 1 As shown, a low-temperature tensile testing system includes a hollow cylindrical outer Dewar 15, and an inner Dewar 16 that is also hollow cylindrical is arranged inside the outer Dewar 15, and the diameter of the inner Dewar 16 is smaller than that of the outer Dewar 15. The inner Duwar 16 divides the space of the outer Duwar 15 into two parts that are not connected to each other. A Dewar sealing cover 9 is arranged on the top of the outer Dewar 15 . Five through holes are set on the Dewar sealing cover 9, two of which are communicated with the space between the inner Dewar 16 and the outer Dewar 15, two are communicated with the space in the inner Dewar 16, and the other is arranged on the Dewar seal. Cover the center of 9. The low-temperature tensile test system of the present application is provided with an outer gallbladder infusion tube 5 and an inner gallbladder infusion tube 6. The outer gallbladder infusion tube 5 passes through a through...
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The invention belongs to a testing system and a testing method, and concretely relates to a low-temperature stretching testing system and a testing method. The testing system comprises an outer Dewar and an inner Dewar, a Dewar seal cover is arranged at the top, an external bile liquid conveying tube and an internal bile liquid conveying tube are arranged on the low-temperature stretching testing system, the external bile liquid conveying tube is communicated with the space between the outer Dewar and the inner Dewar, the internal bile liquid conveying tube is communicated with the space in the inner Dewar, an external bile liquid conveying tube control valve and a liquid conveying tube main valve are arranged on a pipeline of the external bile liquid conveying tube in order, the internal bile liquid conveying tube enables airtight communication with the liquid conveying tube main valve, an external bile liquid nitrogen exhaust pipe and an internal bile liquid nitrogen exhaust pipe are arranged on the low temperature stretching testing system, the external bile liquid nitrogen exhaust pipe is communicated with the space between the outer Dewar and the inner Dewar, the internal bile liquid nitrogen exhaust pipe is communicated to the space of the inner Dewar, an external bile liquid nitrogen exhaust pipe control exhaust valve and a low temperature exhaust main valve are arranged on the pipeline of the external bile liquid nitrogen exhaust pipe in order, and the internal bile liquid nitrogen exhaust pipe enables airtight communication to the low temperature exhaust main valve. The low-temperature stretching testing system and the testing method have the effects of high efficiency and saved cost.
Description
technical field [0001] The invention belongs to a test system and a test method, in particular to a low-temperature tensile test system and a test method. Background technique [0002] In recent years, high-quality low-temperature structural materials have been widely used in cutting-edge science such as aerospace industry, superconducting technology, high-energy physics, controlled thermonuclear reaction and electronic technology. For these materials, the test of low-temperature mechanical properties is one of the essential steps . The existing low-temperature tensile testing device for materials uses liquid helium for cooling, but there are shortcomings such as serious waste of liquid helium and high testing cost. Contents of the invention [0003] Aiming at the defects of the prior art, the invention provides a liquid helium-saving low-temperature tensile testing system and testing method. [0004] The present invention is achieved in this way: a low-temperature tensi...
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Inventor 侯炳林李鹏远韩石磊廖敏潘传杰鄢华男王跃徐颖
Owner SOUTHWESTERN INST OF PHYSICS