A propellant step-by-step neutralization spray spray system and control method

Abstract

The present invention discloses a step-by-step propellant neutralization water-spraying and mist-spraying system, which comprises an absorption liquid tank and a liquid feeding pipe connected with the absorption liquid tank. The liquid feeding pipe is connected respectively with a first water pump, a water spraying pipe and a mist spraying pipe in the liquid feeding direction at the upper edge. The part of the liquid feeding pipe between the water spraying pipe and the mist spraying pipe is provided with a pressure valve. A second liquid feeding pipe also connects the liquid absorption tank with the liquid feeding pipe, and the second liquid feeding pipe is provided with a second water pump. The second liquid feeding pipe is provided with a check valve in the liquid feeding direction. The invention also relates to a control method of a step-by-step propellant neutralization water-spraying and mist-spraying system, which makes different alarms and security actions according to different degrees of leakage of the propellant, and integrates the water-spraying pipe and the mist-spraying pipe, saving the cost of the additional setting of the mist-spraying pipe. With only two pumps, two systems can be controlled to start step by step, greatly simplifying the control flow.

Description

technical field [0001] The invention relates to the field of security spraying, in particular to a propellant step-by-step neutralization spraying system and a control method. Background technique [0002] The commonly used liquid propellants in my country include hydrazine fuel and dinitrogen tetroxide. Hydrazine fuel is a flammable, explosive, toxic and harmful substance, and dinitrogen tetroxide is a strong oxidant and is a highly toxic substance. Accidental leakage of propellant may occur during storage, and a large amount of toxic exhaust gas will be generated during propellant filling and transfer. Safety protection devices are usually designed for the two working conditions of propellant storage and use. [0003] The propellant may leak during the storage process. The absorption treatment of the leaked propellant during storage adopts the form of an absorption liquid supply pipeline and a spray nozzle. The absorption liquid supply device pumps the absorption liquid in...

AI Technical Summary

Problems solved by technology

However, the absorption capacity of the traditional spraying method is insufficient in the face of a large amount of propellant leakage caused by accidents, especially when a large amount of propellant gas is produced at high temperature or local combustion occurs, spraying mist absorbing liquid can be more effective reduce the chance of accidents

Images