Integrated electro-hydraulic actuator capable of carrying out quick action and adjustment

Abstract

The invention discloses an integrated electric hydraulic executer with quick motion and adjustment. Wherein, present hydraulic executer needs external hydraulic station, to increase the volume and relative maintenance. The invention is characterized in that: it comprises a hydraulic cylinder, an integrated power source and a quick power source. Wherein, the quick power source comprises that: the hydraulic pump group via one-way valve feeds hydraulic oil to the accumulator; there is a check valve between the accumulator and the cylinder; the accumulator as the indirect oil source, via two electromagnetic steering valves, provides power oil to the cylinder; the electro voltage switch controls the voltage of accumulator; said integrated power source is formed by a servo motor, a step motor, a bidirectional hydraulic pump and a hydraulic control valve. The invention has the advantages that: it has itself oil source, with compact structure, small volume, lower weight, long service life, and reliable control, while it can be used to control the flux and pressure of tube.

Description

technical field [0001] The invention relates to a device for driving and controlling the opening and closing of a valve and ensuring the safe operation of the valve. The valve mentioned in this article refers to the valve that controls the flow and pressure of the fluid in the pipeline. Background technique [0002] Valves are used to control fluid flow and pressure in pipelines. The device that drives and controls the operation of the valve is called an actuator. According to the working mode of the actuator, it can be divided into electric type, pneumatic type and hydraulic type. The electric actuator is driven by a motor to drive the valve, which has the characteristics of simple operation and easy remote control, but the adjustment accuracy is relatively low, the response speed is relatively slow, and the reliability is relatively poor; the pneumatic actuator is made of pressurized gas. The operation of driving the valve has the characteristics of simple structure and...

AI Technical Summary

Problems solved by technology

The electric actuator is operated by the motor to drive the valve, which has the characteristics of simple operation and easy remote control, but the adjustment accuracy is relatively low, the response speed is relatively slow, and the reliability is relatively poor; the pneumatic actuator is made of pressurized gas. The operation of driving the valve has the characteristics of simple structure and convenient maintenance, but it is large in size, requires air source and air purification device, and the load capacity is relatively low due to the constraints of structure and volume; the hydraulic actuator is driven by hydraulic oil. It has the characteristics of high adjustment accuracy and relatively fast response speed, but it needs to be equipped with huge oil supply equipment, and the maintenance workload is relatively large

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