JPS5617406A - Gaseous pressure controller - Google Patents
Gaseous pressure controllerInfo
- Publication number
- JPS5617406A JPS5617406A JP9312379A JP9312379A JPS5617406A JP S5617406 A JPS5617406 A JP S5617406A JP 9312379 A JP9312379 A JP 9312379A JP 9312379 A JP9312379 A JP 9312379A JP S5617406 A JPS5617406 A JP S5617406A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- range
- gaseous
- control valve
- time
- 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.)
- Granted
Links
Landscapes
- Pipeline Systems (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
PURPOSE: To exercise accurate control over gaseous pressure by adjusting a pressure control valve through a gaseous pressure controller on the basis of a difference in time when a difference between set pressure and measured pressure exceeds the 1st range and by stopping time adjustment within the 2nd range narrower than the 1st range.
CONSTITUTION: Pressure data 1 that correspond to the opening degree of a pressure control valve are compared by comparators 34 and 35 to addition value 36 and subtraction value 37 between set pressure data per hour read out of memory unit 29 and the 1st range set value 47; when the both are negative or positive, a time- difference signal is output to gaseous pressure control valve adjusting circuit 30, but when either one is positive and the other is negative, the time-difference signal is not sent out and outputs to addition 36 and subtraction 37 are changed over to the 2nd range set value 48, thereby repeating the same operation with the 1st range set value 47. Therefore, the hunting of control operation based upon a temperature change, etc., can be prevented and the adjustment precision of the gaseous-pressure control valve can be improved, exercising accurate control over gaseous pressure.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9312379A JPS5617406A (en) | 1979-07-20 | 1979-07-20 | Gaseous pressure controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9312379A JPS5617406A (en) | 1979-07-20 | 1979-07-20 | Gaseous pressure controller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5617406A true JPS5617406A (en) | 1981-02-19 |
JPS639252B2 JPS639252B2 (en) | 1988-02-26 |
Family
ID=14073738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9312379A Granted JPS5617406A (en) | 1979-07-20 | 1979-07-20 | Gaseous pressure controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5617406A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5833723A (en) * | 1981-08-20 | 1983-02-28 | Fuji Denki Keiso Kk | Controlling system of pressure at terminal to constant value |
JPS59123910A (en) * | 1982-12-29 | 1984-07-17 | Daikin Ind Ltd | Pressure controlling mechanism |
JPS60169474U (en) * | 1984-04-20 | 1985-11-09 | トキコ株式会社 | pressure control device |
JPS6353976U (en) * | 1986-09-29 | 1988-04-11 | ||
JPS6431410U (en) * | 1987-08-13 | 1989-02-27 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50148901A (en) * | 1974-05-21 | 1975-11-28 | ||
JPS52122792A (en) * | 1976-04-08 | 1977-10-15 | Ishikawajima Harima Heavy Ind Co Ltd | Fluid pressure control system |
-
1979
- 1979-07-20 JP JP9312379A patent/JPS5617406A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50148901A (en) * | 1974-05-21 | 1975-11-28 | ||
JPS52122792A (en) * | 1976-04-08 | 1977-10-15 | Ishikawajima Harima Heavy Ind Co Ltd | Fluid pressure control system |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5833723A (en) * | 1981-08-20 | 1983-02-28 | Fuji Denki Keiso Kk | Controlling system of pressure at terminal to constant value |
JPS59123910A (en) * | 1982-12-29 | 1984-07-17 | Daikin Ind Ltd | Pressure controlling mechanism |
JPS60169474U (en) * | 1984-04-20 | 1985-11-09 | トキコ株式会社 | pressure control device |
JPS6353976U (en) * | 1986-09-29 | 1988-04-11 | ||
JPH0517686Y2 (en) * | 1986-09-29 | 1993-05-12 | ||
JPS6431410U (en) * | 1987-08-13 | 1989-02-27 | ||
JPH0454500Y2 (en) * | 1987-08-13 | 1992-12-21 |
Also Published As
Publication number | Publication date |
---|---|
JPS639252B2 (en) | 1988-02-26 |
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