A One-way Pressure Relief Valve Suitable for Pressure Control in Spacecraft Cabin

Abstract

The invention discloses a one-way pressure release valve suitable for the pressure control in a spacecraft cabin. The one-way pressure release valve suitable for the pressure control in the spacecraftcabin comprises a valve body, a sealing gasket, a piston, a spring, a transition flange, a compression nut and an adjusting nut. When the one-way pressure release valve is initially at a close state,a pressure release point of the valve can be adjusted on a ground stage according to the requirement on the pressure in the returning cabin of a spacecraft. According to the one-way pressure releasevalve suitable for the pressure control in the spacecraft cabin, pressure release and closing are automatically realized through the way that a pressure sensing element senses a pressure difference ofan inner environment and an outer environment of the returning cabin; and the one-way pressure release valve suitable for the pressure control in the spacecraft cabin has closing and heat protectionfunctions, the spacecraft weight is light, resource consumption is less, and the pressure control mode is simple.

Description

technical field [0001] The invention relates to the technical field of spacecraft environment control, in particular to a one-way pressure relief valve suitable for pressure control in a spacecraft cabin. Background technique [0002] The spacecraft return module can be used for manned exploration, lunar exploration and space science experiments. During the rocket launch phase, as the flight altitude increases, the atmospheric density and atmospheric pressure outside the return cabin drop rapidly. In order to ensure that the structure of the return cabin is not damaged, it is necessary to set a one-way pressure relief valve to reduce the air pressure in the return cabin to a specified pressure value. within range. During the reentry stage of the return cabin, the valve has the function of closing and preventing heat to ensure that the instruments and equipment in the return cabin are not damaged. [0003] At present, electronically controlled valves are more common in aero...

AI Technical Summary

Problems solved by technology

Electronically controlled valves rely on sensors to sense environmental pressure and close the valves through electronic control. The disadvantages are large size, heavy weight, and the need to consume spacecraft power resources for operation.

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