Low temperature infusion pipeline heat leakage test system and measurement method
A technology of a testing system and a low-temperature refrigeration system, which is applied in the field of thermal leakage testing systems of low-temperature infusion pipelines, can solve the problems of large fluctuation of liquid helium liquid level and difficulty in realization, and achieves the effects of strong replacement, low cost and accurate testing.
Active Publication Date: 2021-02-12
北京中科富海低温科技有限公司
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Problems solved by technology
However, it is difficult to realize this method of ensuring the constant liquid level, and the liquid level of liquid helium fluctuates greatly.
Method used
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[0023] In the following, in combination with the embodiments, a system and measurement method for heat leakage of low-temperature infusion pipelines will be further described in detail.
[0024] like figure 1 and 2 As shown, the low-temperature infusion pipeline heat leakage test system of one embodiment includes: the low-temperature infusion tube 10 to be tested, the flowmeter 20, the temperature sensor 30 and the pressure Meter sensor 40, flow meter 20, temperature sensor 30 includes the first temperature sensor 310 that is arranged on the first test point on the low temperature infusion tube 10 to be tested and the second temperature sensor 320 on the second test point, and the pressure sensor 40 includes a set On the first test point on the low temperature infusion tube 10 to be tested and on the first pressure sensor 410 and the second pressure sensor 420 on the second test point, the temperature sensor 30 is provided with a protective cover 50, and the protective cover ...
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Abstract
A low-temperature infusion pipeline heat leakage testing system, comprising: a low-temperature infusion pipeline to be tested, a flowmeter, a temperature sensor, and a pressure gauge sensor arranged in a low-temperature refrigeration system, and the temperature sensor includes a first temperature sensor arranged on a first test point. The second temperature sensor on the sensor and the second test point, the pressure sensor includes the second pressure sensor on the first test point and the first pressure sensor and the second test point, the temperature sensor is provided with a protective cover, and the protective cover is fixed on On the low-temperature infusion tube to be tested, and the outer ring of the protective cover is equipped with a radiation cold screen, there is a gap between the protective cover and the radiation cold screen, and the surface of the radiation cold screen is provided with heat insulating materials. According to the mass flow rate measured by the flowmeter, the first The temperature and pressure of the test point and the temperature and pressure of the second test point obtain the leakage heat between the first test point and the second test point on the low temperature infusion tube to be tested. The above-mentioned low-temperature infusion pipeline heat leakage test system and measurement method have high measurement accuracy.
Description
technical field [0001] The invention belongs to the field of refrigeration and low-temperature engineering, and in particular relates to a heat leakage test system and a measurement method of a low-temperature infusion pipeline. Background technique [0002] In today's engineering applications, cryogenic liquids are used more and more widely, especially in superconductivity, aerospace and basic physics applications. Commonly used cryogenic liquids include liquid helium, liquid hydrogen, liquid oxygen, liquid nitrogen, etc.; commonly used methods of transporting cryogenic liquids include cryogenic storage tanks, cryogenic pipelines, etc. Cryogenic liquids are not easy to produce, and the latent heat of vaporization such as liquid helium is lower. How to effectively transport cryogenic liquids requires cryogenic infusion lines with excellent performance. How to measure and evaluate the thermal insulation and cold preservation performance of the cryogenic infusion tube is part...
Claims
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IPC IPC(8): G01K17/08
CPCG01K17/08
Inventor 谢秀娟邓笔财
Owner 北京中科富海低温科技有限公司