Multi-turn electro-hydraulic actuating mechanism
An electro-hydraulic actuator, hydraulic technology, applied in mechanical equipment, engine components, valve details, etc., can solve the problems of manual valve opening and closing, time-consuming, labor-intensive, safety, complex structure of transmission and actuator, and limited actual working environment, etc. Safety risk, avoid immobility, light weight effect
Inactive Publication Date: 2021-02-12
ZHEJIANG TIANTAI CONTROL EQUIP CO LTD
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Problems solved by technology
[0003] In the modern production process, the executive mechanism plays a very important role. With the development of industry, the scale of the current oil refining equipment is expanding year by year, and the diameter of the gate valve in the equipment has reached DN700-DN800, or even larger. Certain potential safety hazards, and the use of multi-turn electro-hydraulic actuators can solve such problems very well
[0004] Multi-turn electro-hydraulic actuators mainly include hydraulic power devices and transmission actuators. The existing transmission actuators are relatively complex in structure and large in size, which limits the actual working environment and is not suitable for all types of valves. make improvements
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[0016] see Figure 1-Figure 2 Shown: a multi-turn electro-hydraulic actuator, including a hydraulic power device 1 and a transmission device 2, the transmission device 2 includes a transmission gearbox 21, a hydraulic motor 22, a hydraulic integrated valve group 23, a hydraulic hand-operated mechanism 24, and a hydraulic integrated The valve stem 231 of the valve block 23 is directly connected to the transmission gearbox 21, one end of the transmission gearbox 21 is connected to the hydraulic motor 22, and the other end of the transmission gearbox 21 is connected to the hydraulic power unit 1, which includes a control assembly 11, a gear Pump, support 17, power output assembly 13 connected with gear pump and hydraulic cylinder connected with power output assembly 13, power output assembly 13 is provided with second oil inlet pipe 131 and second oil outlet pipe 132, support 17 is located at the hydraulic cylinder connection The other end of the power output assembly 13 is provi...
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The invention relates to a multi-turn electro-hydraulic actuating mechanism which comprises a hydraulic power device and a transmission device, and is characterized in that the transmission device comprises a transmission gear box, a hydraulic motor, a hydraulic integrated valve bank and a hydraulic manual operation mechanism, a valve rod of the hydraulic integrated valve bank is directly connected with the transmission gear box, and one end of the transmission gear box is connected with the hydraulic motor; and the other end of the transmission gear box is connected with the hydraulic power device. The multi-turn electro-hydraulic actuating mechanism has the beneficial effects that 1, the size is small, and the weight is light; 2, the application range is wide, and the multi-turn electro-hydraulic actuating mechanism is suitable for being connected with all valves; 3, working oil cylinders are reduced, and the situation that the actuating mechanism cannot act due to direct oil leakageof the oil cylinders is avoided; 4, leakage points are reduced; and 5, the multi-turn electro-hydraulic actuating mechanism is particularly suitable for matching with large-caliber gate valves, and the operation safety risk is reduced.
Description
technical field [0001] The invention relates to the technical field of automatic control, in particular to a multi-turn electro-hydraulic actuator. Background technique [0002] With the development of automation technology, valve actuators are widely used in the fields of petroleum, chemical industry, electric power, energy, shipbuilding, metallurgy, boiler equipment and building automation, but in some fields (such as refrigeration industry), there are special requirements for valve actuators. Requirements, that is, the valve should not be opened and closed too fast, it usually takes 3 to 8 minutes to open and close the valve by turning more than 10 circles, the multi-turn electro-hydraulic actuator is designed to solve such problems A designed actuator. [0003] In the modern production process, the executive mechanism plays a very important role. With the development of industry, the scale of the current oil refining equipment is expanding year by year, and the diameter...
Claims
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IPC IPC(8): F16K31/14F16K31/53F15B1/02F15B11/08F15B13/04
CPCF15B1/02F15B11/08F15B13/0401F16K31/14F16K31/53
Inventor 张董力晏彬董友美
Owner ZHEJIANG TIANTAI CONTROL EQUIP CO LTD