Loop heat pipe ammonia working medium purity analysis device

Abstract

The invention relates to a loop heat pipe ammonia working medium purity analysis device. The loop heat pipe ammonia working medium purity analysis device is composed of a high-purity carrier gas steel bottle, a first high-purity ammonia steel bottle, a second high-purity ammonia steel bottle, a gasification chamber, a constant-temperature control system, ball valves, a pressure valve, an electromagnetic valve, a re-pressing valve, a check valve, pressure gauges, a flow meter, a vacuumizing set, a waste gas collecting and processing device, a gas chromatograph and a computer. The high-purity carrier gas steel bottle is connected with the gas chromatograph through a carrier gas pipeline. The first high-purity ammonia steel bottle is connected with the gas chromatograph through a purging pipeline, the first ball valve, the electromagnetic valve, the first pressure gauge and the flow meter. The second high-purity ammonia steel bottle is connected with the gasification chamber through a sample inlet pipeline. The vacuumizing set is connected with the gasification chamber through the check valve. The gasification chamber, the vacuumizing set and the gas chromatograph are connected with the waste gas collecting and processing device through discharge pipelines. By means of the integrated design of the device, the detection rate of impurity gas in loop heat pipe liquid ammonia is increased, air inside the pipelines is reduced in the gas sample inlet process, and the measurement accuracy is improved.

Description

technical field [0001] The invention belongs to the field of gas purity analysis and relates to a loop heat pipe ammonia working medium purity analysis device. Background technique [0002] As an aerospace thermal control product, the loop heat pipe needs to meet the non-repairable and long-life requirements of the spacecraft in orbit. At present, during the operation of the loop heat pipe using liquid ammonia as the working fluid, the ammonia working fluid gradually decomposes to produce non-condensable gas (H 2 , N 2 ) is one of the main causes of its performance degradation. Understanding the decomposition rate of ammonia working fluid inside the loop heat pipe and the influence of non-condensable gas on the performance of the loop heat pipe is an important means to study and evaluate the service life of the loop heat pipe. [0003] The decomposition of ammonia working fluid inside the loop heat pipe is a very slow process. At the beginning of life, the content of non...

AI Technical Summary

Problems solved by technology

Traditional ammonia purity testing equipment requires a large amount of air intake to purify the sampling pipeline before testing, which will cause a large amount of non-condensable gas to be tested to be lost before entering the detector, reducing the detection accuracy

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