JPS57166613A - Plant flow rate controller - Google Patents
Plant flow rate controllerInfo
- Publication number
- JPS57166613A JPS57166613A JP5154281A JP5154281A JPS57166613A JP S57166613 A JPS57166613 A JP S57166613A JP 5154281 A JP5154281 A JP 5154281A JP 5154281 A JP5154281 A JP 5154281A JP S57166613 A JPS57166613 A JP S57166613A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- flow rate
- signal
- valve
- controller
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B5/00—Anti-hunting arrangements
- G05B5/01—Anti-hunting arrangements electric
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Flow Control (AREA)
Abstract
PURPOSE:To prevent a load and disturbance from being generated, by setting an opening of a by-pass valve variably, and also inhibiting an operation of a digital regulating valve controller, when it is required to change a flow rate level remarkably. CONSTITUTION:When an operation of a plant is changed, its mode is changed, or a load request signal S1 is inputted to a flow rate level variable setting device 8 due to sudden change of a load, a control operation inhibiting signal S2 is sent to a digital regulating valve controller 5 from the setting device 8. Therefore, the controller 5 is inhibited as to its regulating valve controlling operation, and is fixed and held to the control state of that time point. Accordingly, a flow rate regulator 3 is also held to the first state as to its opening. On the other hand, a by-pass valve opening changing signal S3 is sent out from the setting device 8, and is applied to a by-pass valve 6. Therefore, the valve 6 increases its opening by a variation rate in accordance with the signal S3. Subsequently, when the opening of the valve 6 reaches a target value, the signal S2 is cut off. Accordingly, the controller 5 starts its controlling operation once again.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5154281A JPS57166613A (en) | 1981-04-06 | 1981-04-06 | Plant flow rate controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5154281A JPS57166613A (en) | 1981-04-06 | 1981-04-06 | Plant flow rate controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57166613A true JPS57166613A (en) | 1982-10-14 |
Family
ID=12889906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5154281A Pending JPS57166613A (en) | 1981-04-06 | 1981-04-06 | Plant flow rate controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57166613A (en) |
-
1981
- 1981-04-06 JP JP5154281A patent/JPS57166613A/en active Pending
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