Gas cylinder inflation and deflation subsystem suitable for unattended operation

Abstract

The invention discloses a gas cylinder inflation and deflation subsystem suitable for unattended operation. The system comprises a power measurement and control subsystem, a ground gas supply and distribution subsystem and an on-rocket gas cylinder inflation and deflation subsystem. The power measurement and control subsystem sends out a control instruction, remote closed-loop control over an electric control pressure reducer and an electromagnetic valve of the ground gas supply and distribution subsystem and an on-rocket electromagnetic valve is achieved through a PLC measurement and control combination and a relay execution combination, opening and closing of the electromagnetic valve and the outlet pressure of the electric control pressure reducer are controlled, and the controllable and adjustable gas cylinder inflation rate and the automatic gas cylinder inflation and deflation function are achieved; the unattended operation of gas cylinder inflation and deflation is achieved, and the safety of rocket launching staff is improved; and a filter and two step-by-step direct-acting electromagnetic valves are arranged on a common pipeline of the on-rocket gas cylinder inflation and deflation subsystem, and meanwhile, a step-by-step direct-acting electromagnetic valve is arranged on a gas cylinder branch with higher pressure in the rocket flight process, so that one set of gas supply system can inflate and deflate two gas cylinders at the same time, the single-point fault that the system cannot be shut down is eliminated, and the sealing reliability is greatly improved.

Description

technical field [0001] The invention relates to an unattended gas cylinder filling and deflation subsystem, which is used for filling and deflation of liquid rocket pressurized gas cylinders, launch control blow-off gas cylinders and the like. Background technique [0002] Liquid rockets usually use high-pressure gas cylinders to supply gas to realize functions such as tank boosting, engine control, and blow-off. The gas cylinder charging and discharging subsystem is generally composed of a ground gas supply and distribution system and an arrow cylinder system. The ground gas supply and distribution system is mainly composed of a gas distribution platform and a ground inflation pipeline. The gas cylinder system on the arrow is composed of a gas cylinder, a manual switch, an inflation and unloading switch, and an inflation and discharge pipeline. Gas, supplementary gas and other requirements, see the schematic diagram figure 1 . figure 1 Among them, 1' and 2' are gas cylin...

AI Technical Summary

Problems solved by technology

If the inflatable unloading switch is not closed or the leakage rate is out of tolerance, a large amount of gas in the gas cylinder will leak, resulting in delay or failure of the launch mission

There have been many out-of-tolerance faults in the leakage rate of the inflatable unloading switch in history

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