Natural gas pressure regulator for car

Abstract

The invention discloses a natural gas pressure regulator for a car. The natural gas pressure regulator for the car is stable to regulate the pressure. The natural gas pressure regulator for the car comprises a cylindrical housing, a left end cover and a right end cover, wherein the left end cover and the right end cover are arranged on two sides of the cylindrical housing; an air outlet is formed in the left end cover; an air inlet is formed in the right end cover; a ventilating piston and a spring mounting cavity are arranged in the cylindrical housing; a spring sleeves the ventilating piston; planes are arranged at two ends of the spring; a ventilating and stopping plate and an air feeding cavity are arranged in the cylindrical housing at one side of the air inlet; a hole sealing ring mounting cavity and a shaft Y sealing ring are arranged between the ventilating piston and the cylindrical housing; a ventilating valve communicated with the spring mounting cavity is arranged on the cylindrical housing; a waterproof ventilating microporous polytetrafluoroethylene film and a metal protecting net plate are arranged on the ventilating valve.

Description

technical field [0001] The invention relates to a pressure regulating device, in particular to a natural gas pressure regulator for automobiles. Background technique [0002] With the rapid development of new energy technology, natural gas vehicles have also been developed rapidly. Pressure regulators will be used on natural gas vehicles to prevent the weather gas pressure from exceeding the upper limit of the working pressure of the nozzle, so as to ensure that the high flow rate gas in the gas storage tank can reach The normal working pressure can be connected to the intake pipe to ensure the qualified intake pressure and flow according to the requirements of the engine. The spring of the existing pressure regulator is in a closed environment. Although the inner cavity is protected from contamination, the spring force changes due to the compression of the space, and it is difficult to accurately calculate and control the spring force balanced with the output end. The venti...

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Problems solved by technology

The spring of the existing pressure regulator is in a closed environment. Although the inner cavity is protected from contamination, the spring force changes due to the compression of the space, and it is difficult to accurately calculate and control the spring force balanced with the output end. The venting piston There is a risk of jamming, poor sealing and fixing effects, and inconvenient installation

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