Wind tunnel helium reuse device

A technology of helium and wind tunnel, which is applied in the field of wind tunnel testing, can solve the problems of high cost of use and low efficiency of containers, and achieve the effect of low cost of use

Pending Publication Date: 2019-12-06
中国空气动力研究与发展中心超高速空气动力研究所
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  • Abstract
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Problems solved by technology

The above two methods can realize the reuse of helium, but the related devices have the problems of high cost and low container efficiency

Method used

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  • Wind tunnel helium reuse device

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Experimental program
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Embodiment 1

[0039] The specific implementation process of this embodiment is as follows:

[0040] a. Gas storage tank I11 stores helium with a purity of 99.999%, gas storage tank II14 stores helium with a purity of 98%, and gas storage tank III16 stores helium with a purity of 90%;

[0041] b. According to the requirements of the required driving gas, compare with the storage purity of gas storage tank I11, gas storage tank II14 and gas storage tank III16, and select the gas storage tank with the closest storage purity to provide driving gas; if the required driving gas If the purity of the gas is the same as the storage purity of the gas storage tank, select the corresponding gas storage tank to provide the driving gas; if the required driving gas purity is slightly higher than the storage purity of the gas storage tank, calculate the required helium and Fill the high-pressure section 1 with the required helium; if the purity of the required driving gas is slightly lower than the storage...

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Abstract

The invention discloses a wind tunnel helium reuse device. The device comprises a high pressure section, a membrane I, a low pressure section, a membrane II, a throat valve and a test section, which are sequentially connected along the gas flow direction to form a wind tunnel; the device further comprises a gas flow loop pipeline connected between the high pressure section and a gas storage tankfor flowing from the high pressure section to the gas storage tank and flowing from the gas storage tank to the high pressure section, and an exhaust valve, a low pressure compressor, three groups ofgas storage tanks connected in parallel and a high pressure compressor are sequentially installed on the gas flow loop pipeline in sequence. Helium with different degrees of purity is stored in the gas storage tanks respectively, and the gas storage tank with the similar purity is selected according to the purity of the helium required for the test. The wind tunnel helium reuse device disclosed bythe invention has the advantages of simplicity, high efficiency and low use cost.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel tests, and in particular relates to a wind tunnel helium reuse device. Background technique [0002] In some wind tunnel tests, it is necessary to use helium or a mixture of helium and nitrogen as the driving gas for testing. Since helium is expensive, it is necessary to reuse helium. Currently, there are two commonly used methods for reusing helium. One is to purify the tail gas after the test by low-temperature condensation, pressure swing adsorption, osmotic membrane and other technologies to obtain more than 99% of helium and then reuse it. The recovery rate of this method can generally reach more than 90%, but it needs more complex equipment. The other is to add pure helium after the exhaust gas recovery after the test to improve the purity and then continue to use. This method is suitable for the situation where the amount of helium is small, because with the continuous replenishment o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/04G01M9/06
CPCG01M9/04G01M9/065
Inventor 钟涌廖振洋李理罗义成李贤段金鑫徐燕王秀鹏李东刘鉴
Owner 中国空气动力研究与发展中心超高速空气动力研究所
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