Two-way air pressure valve with large temperature bearing range for rail transit

Abstract

The rail transit two-way air pressure valve with the large temperature bearing range comprises a two-way valve body assembly, an air inlet channel and an air outlet channel are fixedly installed in the two-way valve body assembly, the lower end face of the air inlet channel is fixedly connected with one end of an air inlet, and the other end of the air outlet channel is fixedly connected with an air outlet. The lower end face of the air outlet channel is fixedly connected with one end of an air outlet, and a valve element is installed on the inner side of the two-way valve body assembly in a sleeved mode. According to the rail transit two-way air pressure valve with the large temperature bearing range, a plate type connection mode is adopted for installation and connection, a train is prevented from generating vibration and vibration during high-speed running, the valve element is of a plug cock structure with upper and lower supports, the impact resistance is enhanced, and the situation that the valve element shifts due to inertial impact generated when the train speed changes is avoided; and the valve sleeve is arranged in the two-way valve body assembly and is formed by mixing silica gel and fluororubber, so that the heat resistance and cold resistance of the air pressure valve are greatly improved, and the influence of temperature on the air pressure valve is reduced.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a two-way air pressure valve for rail transit with a large temperature bearing range. Background technique [0002] With the production and service of railway locomotive accessories for more than 22 years, from steam locomotives, diesel locomotives, and electric locomotives to the current EMU and high-speed railway Fuxing, the requirements for locomotive pneumatic valves are getting higher and higher. At present, diesel locomotives, Electric locomotives are still using the Soviet version of the pneumatic valve. The large and heavy valves are 4.8 kg / piece, and the small ones are 2.5 kg. They have rough appearance and high failure rate. The main direction of current railway development is high-speed railways and urban subways. , requires high running speed, stable running, low noise, and light vehicle weight. [0003] At present, there is no pneumatic valve with a wide temper...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a two-way pneumatic valve for rail transit with a large temperature tolerance range, to solve the above-mentioned background technology, and there is currently no pneumatic valve with a wide temperature resistance range that can be used for high-speed rail on the market, especially the ability to withstand -40 Pneumatic valves below ℃, the existing small valves are basically pipe-type connections, which take up a lot of space, and the suspended connection on the pipe is prone to vibration, which will easily lead to loosening of the connection and air leakage, and poor low temperature resistance.

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