JPS6483986A - Valve control device - Google Patents
Valve control deviceInfo
- Publication number
- JPS6483986A JPS6483986A JP23945287A JP23945287A JPS6483986A JP S6483986 A JPS6483986 A JP S6483986A JP 23945287 A JP23945287 A JP 23945287A JP 23945287 A JP23945287 A JP 23945287A JP S6483986 A JPS6483986 A JP S6483986A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- passage
- opening
- leak
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fluid-Driven Valves (AREA)
Abstract
PURPOSE:To keep the opening of a valve at a desired constant opening by open/close controlling the fluid leak passage branched from a pressure passage between a fluid-pressure operating type driving device for opening or closing the valve and a fluid pressure source in response to the pressure inside the pressure passage. CONSTITUTION:A throttle valve 3 for open/close controlling a fluid passage 2 is actuated by a piston 8. The pressure receiving chamber 8A of the piston 8 is communicated with an air pump D through a pressure passage 20. In the pressure passage 20, a leak passage 22 is provided, and the effective area of the leak passage 22 is variably controlled by moving a needle 24 up and down via an electromagnetic actuator E. By applying the output of a pressure transducer P having been arranged in the pressure passage 20 to the electromagnetic actuator E of the leak control valve 24 which opens or closes the leak passage 22, even if any pressure change occurs, the opening of the throttle valve can be kept at a desired constant opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23945287A JPS6483986A (en) | 1987-09-24 | 1987-09-24 | Valve control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23945287A JPS6483986A (en) | 1987-09-24 | 1987-09-24 | Valve control device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6483986A true JPS6483986A (en) | 1989-03-29 |
Family
ID=17044976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23945287A Pending JPS6483986A (en) | 1987-09-24 | 1987-09-24 | Valve control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6483986A (en) |
-
1987
- 1987-09-24 JP JP23945287A patent/JPS6483986A/en active Pending
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