JPS6483987A - Valve control device - Google Patents
Valve control deviceInfo
- Publication number
- JPS6483987A JPS6483987A JP23945387A JP23945387A JPS6483987A JP S6483987 A JPS6483987 A JP S6483987A JP 23945387 A JP23945387 A JP 23945387A JP 23945387 A JP23945387 A JP 23945387A JP S6483987 A JPS6483987 A JP S6483987A
- Authority
- JP
- Japan
- Prior art keywords
- passage
- pressure
- fluid
- leak
- fluid flow
- 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 control the fluid flow rate inside a fluid flow passage at a desired constant rate by open/close controlling the fluid leak passage between a fluid- pressure operating type driving device for opening or closing a control valve inside the fluid flow passage and a fluid pressure source in response to the pressure inside the fluid flow 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 an electromagnetic actuator 6. By applying the output of a pressure transducer P having been arranged in the fluid passage 2 to the electromagnetic actuator E of a leak control valve 24 which opens or closes the leak passage 22, even if any pressure change occurs, the opening of the throttle valve 3 can be corrected to a desired opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23945387A JPS6483987A (en) | 1987-09-24 | 1987-09-24 | Valve control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23945387A JPS6483987A (en) | 1987-09-24 | 1987-09-24 | Valve control device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6483987A true JPS6483987A (en) | 1989-03-29 |
Family
ID=17044990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23945387A Pending JPS6483987A (en) | 1987-09-24 | 1987-09-24 | Valve control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6483987A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5237625A (en) * | 1990-04-24 | 1993-08-17 | Matsushita Electric Industrial Co., Ltd. | Image contour enhancing device |
-
1987
- 1987-09-24 JP JP23945387A patent/JPS6483987A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5237625A (en) * | 1990-04-24 | 1993-08-17 | Matsushita Electric Industrial Co., Ltd. | Image contour enhancing device |
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