Analysis of the pneumatic valve water hammer effect

water hammer effect refers to the open type pressure regulating themselves suddenly closed, pneumatic valve and pneumatic valve flow of pneumatic valve and pipe wall, mainly produces a pneumatic valve. Because of tube wall smooth, subsequent water flow under the action of inertial, quickly reached maximum, and destructive role.
pneumatic butterfly valve in the pneumatic valve usually close to closing suddenly suction pneumatic seat closure element ( Soluble cylinder block effect, by the sudden closure of the pump or caused by the sudden closure of pneumatic valve. For control of pneumatic valves, soluble cylinder closure effect is caused by low thrust actuator, the actuator does not have enough stiffness to keep close to the location of the pneumatic valve seat. In some cases, with quick opening type or installation of the linear flow characteristic of pneumatic valve can also lead to water hammer effect.
water hammer of damage was caused by mechanical failure. So by kinetic energy dramatically change into static line pressure, known water hammer will break through the pipe support or damage and damage the pipeline joints. For pneumatic valves, water hammer can arise through pneumatic valve core vibration, it may lead to the failure of pneumatic valve core, gaskets or packing.
pneumatic valve is the best defense water way is to prevent the system from any sudden pressure changes. These include slow down the closing of the pneumatic valve itself or when closing element near the pneumatic valve seat to provide a larger degree of rigidity. To prevent pressure fluctuations, pneumatic valves should be closed at a uniform speed. On a certain type of piping system volatility measures can also reduce water hammer. Pneumatic valve which can use the pressure relief or air hose, air hose can reduce the length of pipeline.