Pressure reducer air supply loop adopting redundant design and control method

Abstract

The invention relates to a pressure reducer air supply loop adopting redundant design and a control method. The pressure reducer air supply loop comprises pressure reducers, electromagnetic valves, hand stop valves, pressure gauges and a pressure sensor which are arranged on a low-temperature propellant pressurization air source intake pipeline. A first throttling valve, a second throttling valve, a third throttling valve and a fourth throttling valve adjust the pressure reducers. The pressure gauges monitor pressure of outlets of the pressure reducers. The pressure sensor monitors air supply pressure. Switching of the pressure reducers is controlled by the three-position two-way electromagnetic valves. According to the pressure reducer air supply loop adopting redundant design and the control method, redundancy of the pressure reducers is achieved, the pressure reducers can be electrically switched according to collected data, the requirement for a narrow window of air supply in a task is sufficiently met, the single-point problem of ground pressurization air supply of a low-temperature propellant rocket is solved, the goal of zero-window launching is realized, and rocket launching reliability is improved.

Description

technical field [0001] The invention relates to a hydraulic pipeline control device, in particular to a redundantly designed pressure reducer air supply circuit. Background technique [0002] Domestic and foreign pressure reducers that provide ground pressurized gas supply for low-temperature propellant rockets usually use a single pressure reducer to achieve gas supply, which generally lasts until -2 minutes before launch, and is a single point without redundancy design. Once a failure occurs, it will It directly affects the progress of the launch process, and even leads to the termination of the launch process, and cannot achieve the goal of "zero window" launch in the mission. Therefore, measures must be taken to improve the reliability of the ground pressurized air supply, and realize the redundancy of the pressure reducer to deal with possible failures. Contents of the invention [0003] Aiming at the deficiencies in the above-mentioned prior art, the present inventi...

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Problems solved by technology

[0002] Domestic and foreign pressure reducers that provide ground pressurized gas supply for low-temperature propellant rockets usually use a single pressure reducer to achieve gas supply, which generally lasts until -2 minutes before launch, and is a single point without redundancy design. Once a failure occurs, it will It directly affects the progress of the launch process, and even leads to the termination of the launch process, and cannot achieve the target requirement of "zero window" launch in the mission

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