Designing And Characteristic Research On The Automatic Fluid Rate Limiting Device

The Automatic Fluid Rate Limiting Device is used in the hydraulic system of a major equipment, the device protects the hydraulic system. In this paper, in accordance with the requirements of the hydraulic system which used in the major equipment, refer to the existing structure and principles of the Pipe Rupture Valve, design the Automatic Fluid Rate Limiting Device, focusing also on the device's test system and the device's impact characteristics.1) The Automatic Fluid Rate Limiting Device's principle of work analysis and structure design. The device automatically switching when the hydraulic system has transient large flow, it works to drive off the main flow valve action by flow signals into pressure difference signals. The Automatic Fluid Rate Limiting Device has an automatic cut off in addition to role, but also should has manual and remote control functions, so we had a new design principle.The device's structural design including strength check and materials selection, this paper emphasis on the main structure and the main spool spring design which relates to the device performance.2) The Automatic Fluid Rate Limiting Device test system has been made to test the safety and reliability of the device. First, the AMESim simulation model has been set up, and then the performance on automatic condition has been simulated , then build the test system. The test results verified the switching performance and sealing performance on automatic, manual, hydraulic three working states. The results of simulation and experiment show that the device can be quickly cut off the oil on automatic working condition, also manual and hydraulic condition worked well, and with good sealing performance. Analysis and research of the simulation and experiment results ,The Automatic Fluid Rate Limiting Device test system can generate a large flow of high pressure fluid,and can meet the device requirements of the test.3) The Automatic Fluid Rate Limiting Device's modeling and simulation research on anti-shock characteristics. Mathematical model and dynamic process of the Automatic Fluid Rate Limiting Device have been made, MATLAB/Simulink is used for dynamic process. The simulation results showed that the Fluid Rate Limiting Device can work well in the impact of the marine in indicators. Simulation model and results of anti-shock properties provide some reference to the Automatic Fluid Rate Limiting Device and similar valves.