Gas distribution method and gas distribution system of shock tube

By using a combination of gas distribution column and mixing tank in the shock tube gas distribution system, along with flow control and heavy gas injection, the problems of inaccurate gas distribution and weak structure of the shock tube were solved, achieving high-precision gas ratio and enhanced safety, and extending the effective experimental time.

CN122361698APending Publication Date: 2026-07-10BEIJING INST OF TECH
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Patent Information

Application Number
CN202610544568.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-23
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing shock tube gas distribution systems cannot achieve highly accurate mixing of experimental gases, have insufficient structural strength, pose safety hazards, and shock wave reflection affects experimental time and accuracy.

Method used

The system uses a gas distribution column and a mixing tank, and achieves precise gas ratio through components such as a flow controller and a throttle valve. The mixing tank has only one inlet and one outlet, and heavy gas is injected into the drive section to delay the transmission of rarefied waves.

Benefits of technology

It significantly improved the accuracy of the proportion of experimental gas components, enhanced the structural strength and pressure-bearing capacity of the mixing tank, and extended the effective experimental time of the shock tube.

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Abstract

According to the shock tube gas distribution method and system, when shock tube experimental gas is configured, a gas distribution column is matched with a gas mixing tank, the internal pressure value of the gas distribution column is actively controlled, a first-stage pressure reduction is additionally arranged between a gas cylinder and the gas mixing cylinder, the gas distribution column plays a role in buffering gas flow and large pressure fluctuation, gas flow is more stable, and the gas distribution effect is better. Meanwhile, only one inlet is formed in the gas mixing tank to be connected with the gas distribution column, and one outlet is formed in the gas mixing tank to be connected with the shock tube, so that the strength and the loading capacity of the gas mixing tank are improved, and the gas distribution safety is enhanced.
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