High-precision pressure stabilizing combination valve

Abstract

The invention discloses a high-precision pressure stabilizing combination valve. The high-precision pressure stabilizing combination valve is composed of a safety valve, a one-way valve, a shell and acontact which are mutually connected through threads. A safety shutter is arranged in a valve element of the safety valve, a spring is arranged in the safety shutter, a spacer is placed at the upperend of the spring, the safety valve is formed by adjusting the thread of a screw to be connected with an insert, and the safety valve is fixedly connected with the shell through the thread. An air inlet at the upper end of the shell and a throttle hole are integrated, a one-way shutter is arranged in a valve element of the one-way valve, a spring is arranged in the one-way shutter, the spring is fixed to the shell through the thread of the contact, and the other end of the contact is connected with a system. According to the technical scheme of the high-precision pressure stabilizing combination valve, the structure is compact, the size is small, the requirements for a large inlet pressure fluctuation range and stable outlet pressure can be met, meanwhile the functions of pressure overloadprotection and reverse pressure cut-off are achieved, accurate adjustment is conducted on system pressure, the pressure adjustable range is large, and the adjustment precision is high.

Description

technical field [0001] The invention relates to a high-precision pressure-stabilizing combined valve, which belongs to the field of air pressure, and is especially suitable for air pressure systems where the inlet pressure varies greatly and the outlet pressure is relatively stable, and has the function of pressure overload protection and reverse pressure cut-off function. Background technique [0002] The existing pneumatic transmission system has a large volume and heavy weight. A pressurized fuel tank is made of composite materials, but the strength of composite materials is low, and the system inlet pressure fluctuates widely, and the maximum inlet pressure has reached 15 times the design strength of the fuel tank. Therefore, it is necessary to install pressure reducing valves, safety valves, check valves and other accessories in the pipeline. To ensure the stability of boost pressure in the composite fuel tank. [0003] At present, the air pressure system is required ...

AI Technical Summary

Problems solved by technology

[0003] At present, the air pressure system is required to be small in size and light in weight. However, the pressure reducing valve, safety valve, and one-way valve in the known air pressure system are relatively heavy, which seriously occupy the weight index of the system and affect the performance of the whole machine.

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