Analysis On Characteristics Of Wafer Check Valve And Structure Optimization

The valve is an important mechanical device in pipeline, control pressure, flow and direction of medium in equipment and pipeline by valve opening, closing or regulation. Check valve is one of classification of the valve, could automatically open and close just medium itself, allowing medium flow one direction, playing an important role to the protection on mechanical equipment in pipeline from water hammer damage.Instantaneous pressure AH of water hammer may higher several times than normal operating pressure, has a great impact on stability and reliability of pipeline system, water hammer in application of multi pump parallel is much more prominent. In order to prevent the pipeline water hammer problems, using new structure or material in design on check valve to ensure performance and minimize impact of water hammer.Working performance of check valve has a direct effect on the performance of whole system, valve opening or closing process is affected by transient flow state in system, on the other hand, the valve opening or closing characteristics also has an effect on the flow state of medium. Research effects of influence factors on transient change of pressure field in H76wafer check valve, calculate corresponding performance curves and analysis impact of various factors on the check valve characteristic, providing a reference for optimization. In order to get energy loss greatly reduced when medium through valve, having a optinazition on guide structure with low flow consistent;Getting optimal angle of two valve flap, with low pressure drop, impulse and vibration; According to the working condition and boundary conditions choose torsional spring, could decrease pressure drop and water hammer; Analysis effect of diameter of check valve on water hammer, choose appropriate nominal diameter of the check valve can reduce damage of water hammer in pipeline system; Static analysis on check valve to ensure strength and dynamic characteristic analysis of modal to understanding dynamic Characteristic and find weak link of body vibration; Buffer cylinder could decrease flow velocity increment during closing process, letting pipeline pressure limited in the scope of the permit, weaken positive water hammer pressure, limit backflow and inverted speed, play a key role to weaken check valve water hammer.Component has a low cost after optimization, reducing manufacturing cost, less energy consumption during operation, good to environmental protection and energy saving, satisfy social advocacy of energy conservation, improving energy utilization, providing basis for project design and management.