Miniature electrical liquid controller without tank

Abstract

The invention discloses a miniature electrical liquid controller without a tank which comprises a control system and a hydraulic system. The control system comprises a displacement sensor, an electromagnetic valve, an explosion-proof motor, a signal isolator, a solid state relay and a control circuit. The hydraulic system comprises a pump, a check valve, a filter, an air filter, an overflow valve, a pressure gauge, a hydraulic lock, an electromagnetic valve, a stop valve, a flow speed control valve and a hydraulic actuator. The controller is characterized in that whether the electromagnetic valve obtains electricity or not is precisely controlled by a programmable controller PLC. The controller provided by the invention employs the supercharging mode of kinetic energy transmission between hydraulic oil in a transmission system to get driving energy required by the system to solve the problem of controlling the opening and closing of the valve. The purpose that the valve is opened or closed through small space and small kinetic energy is reached and the automation control of the valve is realized. The controller provided by the invention has the advantages of stable operation, reliable work, small volume, high precision, convenient operation and low price.

Description

technical field [0001] The electro-hydraulic controller of the present invention particularly relates to a miniature electro-hydraulic controller without an oil tank. Background technique [0002] At present, most of the automatic control of pipeline valves in oil and gas fields, oil refining, chemical industry, electric power, metallurgy and other enterprises at home and abroad adopt: pneumatic control valve technology, electric control valve technology, electro-hydraulic control mechanism control valve technology. Pneumatic control valve: when the temperature is below 0°C in winter and the air contains moisture, the opening and closing of the control valve will lag behind or be lax, resulting in leakage and waste of resources; electric control valve: large volume, frequent adjustment When the motor is overheated, it will pose a major threat to safety; the traditional electro-hydraulic control mechanism control mechanism adopts oil tank control technology, which has high te...

AI Technical Summary

Problems solved by technology

Pneumatic control valve: when the temperature is below 0°C in winter and the air contains moisture, the opening and closing of the control valve will lag behind or be lax, resulting in leakage and waste of resources; electric control valve: large volume, frequent adjustment When the motor is overheated, it will pose a major threat to safety; the traditional electro-hydraulic control mechanism control mechanism adopts oil tank control technology, which has high technical requirements, complex system, large volume, large floor area, high cost and complicated operation.

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