| The valve is the key equipment of the pipeline system and is widely used in the fields of petroleum,chemical and construction.It also plays an important role in coal mine drainage system with automatic control technology and its performance directly affects the safety and efficiency of the whole drainage system.This paper introduces the basic structure of coal mine drainage system,and then leads to the drainage composition equipment that is the focus of this paper ——regulating valve.The paper introduces the basic type and structure of the current valve,and analyzes the development stages of different gate valves such as manual gate valve,electric gate valve and hydraulic control valve,then points out the shortcomings and defects of each valve.Aiming at the problems existing in the gate valve,the research purpose of this paper is put forward.That is,design a electromechanical linkage hydraulic control gate valve for coal mine drainage system.This gate valve can achieve the following functions,its opening and closing speed can be adjusted,it can be operated by hand clutch device under power-off emergency condition and it has the function of hydraulic overload protection.According to the specific conditions of mine drainage system,the paper formulates the design principles of regulating valve,makes comparative analysis of the existing hydraulic control valve actuator and determines overall design scheme of electromechanical linkage hydraulic control gate valve.On the basis of modularized design method,the valve cylinder actuator module,hydraulic module,mechanical and electrical integration control linkage module are determined.The parametric design of the gate valve and the establishment of assembly model are completed based on the Solid Works bottom-up modeling idea,and the working principle and characteristics of the gate valve are described in detail in the paper.The hydraulic system of the gate valve is designed and analyzed.In order to obtain the external load of hydraulic cylinder,the gate in the pipeline by the fluid medium force is simulated and analyzed by FLUENT software and the external load results of hydraulic cylinder are imported into the hydraulic simulation software Automation Studio.Then the electro-hydraulic simulation of the valve is carried out by Automation Studio and the performance of the valve opening and the two way throttle valve are simulated.The reliability of hydraulic system design is verified by simulation.The paper designs a kind of hand clutch device that is suitable for hydraulic control valve.Through the dynamics simulation of the virtual model in ADAMS software,the theoretical calculation and simulation verification of the speed and meshing force of the gearbox are carried out,and the vibration reason of thevirtual model is analyzed.The transmission performance of the model is verified from the dynamic point of view.The planet carrier is important part of the manual transmission,by using the finite element analysis software Ansys Workbench,the static analysis and modal simulation of the planet carrier is completed,proving the rationality of the structure design of planet carrier.The basic functions of the prototype are tested,including the pressure maintaining test of the hydraulic system and the functional test of hand clutch device.On this basis,experimental analysis about the vibration characteristics of hand clutch device is carried out,including modal test and vibration frequency test under working condition.Through the analysis of experimental data,the cause of the slight vibration of the device is found,providing a reference for optimizing the structure of the device. |
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