A gas supply path and method for ensuring remote control online redundancy of multiple pneumatic valves

Abstract

The invention discloses a gas-supply gas circuit and method guaranteeing remote control online redundancy of multiple pneumatic valves. The gas-supply gas circuit comprises a gas collecting pipe, twogas channels and a gas storage tank; the gas collecting pipe and the gas storage tank are connected by the two gas circuits, and the two gas circuits are provided with a relief valve, a safety valve and a one-way valve respectively; the gas storage tank is connected to the pneumatic valve; the gas supply method comprises the following steps: a gas source check valve is opened, two pressure reducers are adjusted respectively, two electric check valves are opened by remote control, and when the pressure reducer on one gas circuit fails, normal gas supply is realized by online redundancy hot backup of the other gas circuit. When the two pressure reducers both fail, the gas use demand of the multiple pneumatic valves is guaranteed by gas stored in the gas storage tank. The gas supply reliability is improved, no any change and action switching are required in the back end control flow when the pressure reducers have a fault, the emission flow is not effected, and the risk that the staff goto the front end to deal with the emergency and remove the faults is also reduced.

Description

technical field [0001] The invention relates to the technical field of air supply for pneumatic valves. More specifically, the invention relates to an air supply circuit and method for ensuring remote control and online redundancy of multiple pneumatic valves. Background technique [0002] At present, most of the launches of large-scale launch vehicles and space shuttles use unattended remote control methods. Before the launch of large-scale launch vehicles and space shuttles, personnel are evacuated from the scene, in order to minimize or even avoid possible damage to personnel and equipment. The damage to the equipment puts forward higher requirements on the reliability of the equipment and the work of the remote control equipment. [0003] It is worth mentioning that there are many gas projects at the space launch site, which need to decompress the high-pressure gas provided by the gas source into low-pressure gas, and then supply the pneumatic valve to realize the openin...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing pneumatic valve gas supply method cannot satisfy the problem of high reliable gas supply within the limited time of the launching process, the present invention innovatively proposes a remote control online redundant gas supply path and The air supply method is to work through two pressure reducers at the same time. If any pressure reducer fails, the control process does not need to be changed or switched, and the other line continues to work. Even if the two pressure reducers fail, it can still The gas supply is maintained through the gas storage tank until the launch task is completed. Therefore, the present invention is a high-reliability, hot-backup online redundant design gas supply method

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