Current Research Status on Structural Strength of Hydraulic Valve Body

Chen Yue of Beijing Jiaotong University studied the strength test process of fire fighting valve body by ANSYS, analyzed the relationship between wall thickness and stress-strain of valve body, and simulated the stress-strain of valve body under water flow impact by means of bidirectional fluid-solid coupling.

Cao Guoqiang and others of Shenyang Institute of Aeronautical Industry adopt ANSYSThe software studies and analyses the strength and stiffness of the large throttle valve body. They point out that when the local stress of the valve body changes greatly, the stress concentration can be reduced by optimizing the valve body structure or improving the processing technology. The valve body meets the rigidity requirements as a whole, but locally, the sealing performance of the valve body is easily reduced due to the inconsistent displacements at the valve body interface.Cause leakage of valve body, etc.

Zhang Wei of Beijing University of Chemical Industry uses dynamic grid model to simulate the reversing process of two-way and three-way solenoid valves, obtains the pressure distribution characteristics of flow field inside the valve body, and calculates and analyses the stress and strain produced by two-way and three-way solenoid valves by using fluid-solid coupling method. It is found that the maximum deformation mainly occurs at the connection between the upper part of the valve body and the upper chamber of the main valve, he proposed.In this position, the deformation is reduced by adding ribs.