Intelligent variable-frequency hydro-electric actuator capable of achieving 60-millimeter straight-stroke power failure resetting

Abstract

The invention discloses an intelligent variable-frequency hydro-electric actuator capable of achieving 60-millimeter straight-stroke power failure resetting. The valve actuator comprises an outer barrel, a support and a controller; a top cover is arranged at the top end of the outer barrel, the support is fixed to the bottom of the outer barrel, an inner cylinder barrel is arranged in the outer barrel, electromagnetic pumps and electromagnetic valves are arranged in the inner cylinder barrel, and an adjusting cavity is reserved between the outer barrel and the inner cylinder barrel; a prepressing elastic device is arranged in the adjusting cavity in the mode of surrounding the inner cylinder barrel, a universal coupler used for switching on and off a hydraulic valve is connected to the bottom of the inner cylinder barrel through a coupling nut, the prepressing elastic device and the inner cylinder barrel synchronously and vertically move, and switching-off operation and switching-on operation of the hydraulic valve are controlled through vertical motion of the inner cylinder barrel. According to the actuator, generation of potential safety hazards in the existing maintaining process is completely eradicated by adopting the prepressing elastic device, the output stoke of the actuator is long, multi-pump pressure supplying is achieved, the stoke requirement is guaranteed, and use is safe and reliable; in addition, when faults occur, the inner cylinder barrel can be gradually reset under the resilience of the prepressing spring, and then the valve is switched off.

Description

Technical field [0001] The invention relates to a 60 mm linear stroke power-off reset intelligent variable frequency hydraulic electric actuator. Background technique [0002] Over the years, similar products of actuators and products in the industry have experienced some problems with the changes in working methods in some areas of the country: [0003] 1. The valve cannot be opened. 2. The opening stroke is not enough. 3. Due to design defects, special equipment that is difficult to move is required for assembly and maintenance. 4. The product has great safety hazards: it is easy to cause the spring to suddenly open during the assembly and maintenance process, because the spring is relatively strong. Operators are often injured by parts due to spring force. Due to the reasons of 1, 2, the product cannot meet the needs of customers, so the problem after use is: whether it is a qualified product of this variety, because of the stroke and thrust, the customer’s requirements canno...

AI Technical Summary

Problems solved by technology

[0003] 1. The valve cannot be opened

2. The opening stroke is not enough

3. Due to design defects, special equipment that is difficult to move is required for its assembly and maintenance. 4. The product has a great potential safety hazard: it is easy to cause the spring to open suddenly during the assembly and maintenance process, because the spring is relatively strong. Operators are often injured by parts due to spring force

2. Lengthen the stroke

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