Gas supply circuit used for controlling low-temperature gas-liquid connector

Abstract

The invention provides a gas supply circuit used for controlling a low-temperature gas-liquid connector. The gas supply circuit comprises a gas source input end, a two-position five-way electromagnetic valve, a first normally-open electromagnetic valve, a second normally-open electromagnetic valve, a connector locking output end, a connector disengagement output end, a third normally-open electromagnetic valve, a two-position two-way electromagnetic valve, and a gas exhaust end. The first end of the two-position five-way electromagnetic valve is connected with the gas source input end. The first end of the first normally-open electromagnetic valve is connected with the second end of the two-position five-way electromagnetic valve. The first end of the second normally-open electromagnetic valve is connected with the third end of the two-position five-way electromagnetic valve. The connector locking output end is connected with the second end of the first normally-open electromagnetic valve. The connector disengagement output end is connected with the second end of the second normally-open electromagnetic valve. The first end of the third normally-open electromagnetic valve is connected with the third end of the second normally-open electromagnetic valve. The first end of the two-position two-way electromagnetic valve is connected with the gas source input end. The second end of the two-position two-way electromagnetic valve is connected with the second end of the second normally-open electromagnetic valve. The gas exhaust end is connected with the second end of the third normally-open electromagnetic valve. According to the gas supply circuit, the design of redundant backup of the two-position five-way electromagnetic valve is provided for coping with possible failures, and the reliability of the gas supply circuit is improved.

Description

technical field [0001] The invention relates to the field of gas supply, in particular to a gas supply circuit for controlling a low-temperature gas-liquid connector. Background technique [0002] At present, the solenoid valves used by cryogenic liquid rockets at home and abroad to provide control gas for cryogenic gas-liquid connectors are usually implemented with a single two-position five-way solenoid valve, which generally needs to continue to work until -2 minutes before launch, and is a single point without redundant design. In addition, once a failure occurs, it will directly affect the progress of the launch process, and even lead to the termination of the launch process, failing to achieve the goal of "zero window" launch in the mission. Contents of the invention [0003] The present invention aims to overcome at least one of the above-mentioned defects and provide a gas supply circuit for the control of low-temperature gas-liquid connectors, which can be electri...

AI Technical Summary

Problems solved by technology

[0002] At present, the solenoid valves used by cryogenic liquid rockets at home and abroad to provide control gas for cryogenic gas-liquid connectors are usually implemented with a single two-position five-way solenoid valve, which generally needs to continue to work until -2 minutes before launch, and is a single point without redundant design. In addition, once a failure occurs, it will directly affect the progress of the launch process, and even lead to the termination of the launch process, failing to achieve the goal of "zero window" launch in the mission.

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