Test device and test method for testing heat leakage of low-temperature fluid transmission pipeline

Abstract

The present invention discloses a test device and a test method for testing the heat leakage of a low-temperature fluid transmission pipeline. The device comprises a fluid for test purpose, a control system, a refrigerating machine, a first heater, a low-temperature transmission pipeline, a second heater, a mass flow meter, a buffer tank and a circulating pump, wherein the refrigerating machine, the first heater, the low-temperature transmission pipeline, the second heater, the mass flow meter, the buffer tank and the circulating pump are sequentially and circularly connected along the fluid transmission direction. The invention also discloses a test method based on the device. The device and the method can efficiently utilize the low-temperature fluid for test purpose, so that the heat leakage amount of the low-temperature fluid transmission pipeline can be accurately tested. Meanwhile, the device and the method can be used for testing different low-temperature transmission pipelines and are good in test universality.

Description

technical field [0001] The invention belongs to the field of low-temperature fluid transmission, and in particular relates to a heat leakage testing device and method for a low-temperature fluid transmission pipeline. Background technique [0002] Cryogenic fluid transfer lines are widely used in the field of cryogenic fluid transfer. Combined with the application environment of cryogenic fluid, the heat insulation requirements for its transmission pipeline are extremely strict. Accurate measurement of the heat leakage of cryogenic fluid pipelines has become a problem that needs to be considered in the design and engineering application of cryogenic fluid pipelines. [0003] Traditionally, the corresponding low-temperature fluid is filled in the low-temperature fluid transmission pipeline, and after the low-temperature fluid has been allowed to stand for a period of time to restore stability, the gasification amount of the low-temperature fluid is measured within a certain ...

AI Technical Summary

Problems solved by technology

This method cannot guarantee the accurate measurement of heat leakage. There are two main reasons: First, the state of the cryogenic fluid in the cryogenic fluid transmission pipeline is different. The cryogenic fluid is static during the test, but the cryogenic fluid is in motion during actual use. Yes, this determines that the accuracy of the heat leakage test needs to be verified; second, the volume of the cryogenic fluid transmission pipeline is generally very small, any abnormal external conditions will affect the results of the heat leakage test, and the test accuracy is poor

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