The role of the use of a variety of valve working condition Isolated Conversion

Electric locomotive control air piping system is an  Valve manifold  part of the piping system for electric locomotive pneumatic appliances, such as the pantograph, the main circuit breaker and safety protection devices such as door interlock or key box, high-voltage electrical cabinet with compressed air. Is to ensure the normal operation of locomotive  Instrumentation ball valve  part. In order to prevent backflow of compressed air to ensure the pantograph, the main circuit breakers and high-voltage electrical cabinet two position switch, electrical contacts and other aerodynamic components of the normal work in the electric locomotive control piping system which is Instrument valve  check valve, the use of the role of non-return valve isolated Conversion various conditions. Check valve in the practical application process, the most common failure is channeling the wind, that the phenomenon of compressed air countercurrent direct impact locomotives l bow, closing and other operations.