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Fast and accurate split-program actuator

A split-program, actuator technology, applied in valve operation/release devices, mechanical equipment, engine components, etc., can solve the problems of valve parking error, slow response speed, and long time-consuming driving medium, and achieve accurate and precise cylinder control. The effect of improving response speed and reducing errors

Active Publication Date: 2021-11-26
CHENGDU MAIKESEN FLUID CONTROL EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing split-program actuators include pneumatic actuators, hydraulic actuators and gas-hydraulic linkage actuators. Compared with pneumatic actuators, hydraulic actuators have the advantage of more accurate control, but in some special application scenarios, the hydraulic source cannot Provided, and the use of gas-hydraulic linkage actuators can solve the above problems to a certain extent
[0003] However, the existing gas-hydraulic linkage actuator has a slow response speed, and it takes a long time to cut off the driving medium. When the driving medium such as hydraulic oil is in the process of valve parking, due to the influence of its own inertia, there will be errors in the valve parking, especially For valves that need to adjust the opening, such as butterfly valves, the impact is even greater, making the valve unable to stop accurately

Method used

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  • Fast and accurate split-program actuator

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Experimental program
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Effect test

Embodiment 1

[0032] see figure 1 , the embodiment of the present invention provides a split-program actuator with fast and accurate response, including an air source 1, a pneumatic control valve group 3, a first gas-liquid isolation tank 41, a second gas-liquid isolation tank 42 and a hydraulic cylinder 15, and a pneumatic control valve The group 3 can realize the reversing of the gas source 1, and the first filter 2 is arranged between the gas source 1 and the pneumatic control valve group 3.

[0033] The first gas-liquid isolation tank 41 and the second gas-liquid isolation tank 42 are exactly the same and the volume is matched with the hydraulic cylinder 15. The first gas-liquid isolation tank 41 and the second gas-liquid isolation tank 42 need to meet the capacity of the hydraulic cylinder 15 All the hydraulic oil enters, and there must be room for gas.

[0034] The pneumatic control valve group 3 includes a first reversing valve 31 and a second reversing valve 32. The first reversing...

Embodiment 2

[0058] see Figure 2~Figure 5 , which is different from Embodiment 1, refer to figure 2 , a four-position eight-way selection valve 7 and a manual pump 8 are provided between the liquid outlet of the first gas-liquid isolation tank 41 and the second gas-liquid isolation tank 42 and the first locking unit, and the manual pump 8 cooperates with the four-position eight-way selection valve The change of the control position of the valve 7 can realize the manual control of the split-range actuator. A second locking unit is arranged between the four-position eight-way selector valve 7 and the first locking unit, and the second locking unit includes a third hydraulic control check valve 9 And the fourth hydraulic control check valve 10, the third hydraulic control check valve liquid outlet 9o is connected with the first oil inlet and outlet of the hydraulic cylinder 15, and the fourth hydraulic control check valve liquid outlet 10o is connected with the hydraulic cylinder 15. The s...

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Abstract

The invention discloses a split-program actuator with fast and accurate response, including an air source, a pneumatic control valve group, a first gas-liquid isolation tank, a second gas-liquid isolation tank and a hydraulic oil cylinder. With the setting of the gas-liquid isolation tank and the second locking unit, the split-program actuator can respond at high speed and stop accurately no matter in the case of manual control or electric control. The power source adjusted by the first hydraulic control check valve and the second hydraulic control check valve is an air source, and no additional power source is required; it is especially suitable for application scenarios where it is inconvenient to provide a hydraulic source; the gas-liquid isolation tank is driven by an air source And use the hydraulic oil as the driving medium of the cylinder to drive the action of the cylinder, which makes the control of the cylinder more precise.

Description

technical field [0001] The invention relates to the field of actuator drive technology, in particular to a split-program actuator with fast and accurate response. Background technique [0002] The existing split-program actuators include pneumatic actuators, hydraulic actuators and gas-hydraulic linkage actuators. Compared with pneumatic actuators, hydraulic actuators have the advantage of more accurate control, but in some special application scenarios, the hydraulic source cannot Provided, and the use of gas-hydraulic linkage actuators can solve the above problems to a certain extent. [0003] However, the existing gas-hydraulic linkage actuator has a slow response speed, and it takes a long time to cut off the driving medium. When the driving medium such as hydraulic oil is in the process of valve parking, due to the influence of its own inertia, there will be errors in the valve parking, especially For valves that need to adjust the opening, such as butterfly valves, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/124F15B13/02F15B13/01F15B21/041F15B21/048
CPCF16K31/1245F15B13/02F15B13/027F15B13/01F15B21/048F15B21/041
Inventor 李宜华肖连王付京马广明古自强杜华东胡洋宽王正权
Owner CHENGDU MAIKESEN FLUID CONTROL EQUIP