Dynamic Simulation of a Direct Drive Reversing Valve Based on the Hydraulic Die Forging Hammer

Abstract

The direct drive reversing valve is designed in this paper to replace the main reversing valve of the hydraulic die forging hammer system, and a new drive method based on TPMLM (tubular permanent magnet linear motor) is suggested. To verify the feasibility of the drive method, the fluid force suffered by valve core is calculated by using control volume method. After that, force analysis is carried out on the valve core. Based on FLUENT, the flow field analysis inside the valve is conducted. And then theoretical calculation and simulation on the fluid force analysis are discussed. TPMLM (tubular permanent magnet linear motor) is selected as the driving device and it is analyzed by Maxwell 2D. The simulation results of TPMLM show that the magnetic flux density, back electromotive force and output force satisfy the requirement of the reversing valve.