Device and method for measuring elastic properties of spring under low temperature

Abstract

The invention discloses a device and a method for measuring elastic properties of a spring under a low temperature. The device comprises a cryostat and a test system for the elastic properties of thespring. The test system for the elastic properties of the spring is longitudinally arranged above the interior of the cryostat. The cryostat comprises a sample chamber, a low-temperature cavity, an insulating interlayer, and an outer wall of an insulating container. The sample chamber, the low-temperature cavity, and the outer wall of the insulating container are all hollow cylindrical structures,and the low-temperature cavity is longitudinally sleeved inside the outer wall of the insulating container. According to the device and the method for measuring elastic properties of the spring underthe low temperature, the device and the method have the beneficial effects that: the device for measuring elastic properties of a spring under the low temperature, which can realize a continuous adjustment of the test temperature from a room temperature to a liquid nitrogen temperature range, by using liquid nitrogen as a cooling medium to reduce the spring test temperature, and changing the gaspressure in the liquid nitrogen storage tank; and the device can carry on a replacement or an installation of the sample to-be-tested, is more convenient and easy to operate, and is suitable for testing a large number of samples.

Description

technical field [0001] The invention relates to a measuring device, in particular to a device and method for measuring the low-temperature elastic performance of a spring, and belongs to the technical field of application of spring elastic performance measuring devices. Background technique [0002] Cryogenic devices are widely used in aerospace, industry, scientific research and medical fields. As a compressed heat transfer component in a cryogenic device, springs need to meet certain mechanical properties in a low temperature environment. The elastic properties of springs at low temperatures directly affect whether the cryogenic device can operate normally. [0003] The current spring performance testing device still has many deficiencies in use. The current spring performance testing device is only for normal temperature mechanical testing, and cannot be adjusted and tested at the temperature of liquid nitrogen, and the push rod of the device for measuring spring low temp...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current spring performance testing device is only for normal temperature mechanical testing, and cannot be adjusted and tested at the temperature of liquid nitrogen, and the push rod structure of the device for measuring spring low temperature elastic properties has a large thermal load on the sample testing space. , it is not conducive to stabilizing the temperature of the sample space, and the existing spring performance testing device has a large loss of cooling capacity for measuring the elastic performance of the spring, and the existing device for measuring the low temperature elastic performance of the spring is not convenient for the replacement and installation of the tested sample, and It is not suitable for the test of a large number of samples, but a device and method for measuring the low temperature elastic properties of springs are proposed

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