JPS57115679A - Adjusting device of degree of vacuum in condenser - Google Patents
Adjusting device of degree of vacuum in condenserInfo
- Publication number
- JPS57115679A JPS57115679A JP120381A JP120381A JPS57115679A JP S57115679 A JPS57115679 A JP S57115679A JP 120381 A JP120381 A JP 120381A JP 120381 A JP120381 A JP 120381A JP S57115679 A JPS57115679 A JP S57115679A
- Authority
- JP
- Japan
- Prior art keywords
- condenser
- vacuum
- degree
- circulating water
- rotational frequency
- 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
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
Abstract
PURPOSE: To enable to hold the degree of vacuum in the condenser constant by a method wherein the flow rate of circulating water for cooling is automatically changed by changing the rotational frequency of a circulating water pump at the adjusting device of degree of vacuum in the condenser equpipped in a power plant.
CONSTITUTION: An output 15 is outputted by comparing and calculating the signal detected by a condenser inner pressure detector 12 with the signal of a pressure setter 14 at an indicating controller 13. On the other hand, limiting signals, which are respectively formed at an upper bound function generator 20 and at a lower bound function generator 21 inputted with the signal of an output detector 19 of a turbine, are inputted in an upper bound limiter 16 and a lower bound limiter 17. The compared and calculated output 15 is past through said limiters 16 and 18 and turned to be the signal 18 which is inputted in an adjusting device of rotational frequency of the circulating water pump in order to change the rotational frequency of the pump. The change of the rotational frequency of the pump causes the change of the flow rate of the circulating water, resulting in holding the degree of vacuum in the condenser.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP120381A JPS57115679A (en) | 1981-01-09 | 1981-01-09 | Adjusting device of degree of vacuum in condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP120381A JPS57115679A (en) | 1981-01-09 | 1981-01-09 | Adjusting device of degree of vacuum in condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57115679A true JPS57115679A (en) | 1982-07-19 |
Family
ID=11494898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP120381A Pending JPS57115679A (en) | 1981-01-09 | 1981-01-09 | Adjusting device of degree of vacuum in condenser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57115679A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10280910A (en) * | 1997-04-07 | 1998-10-20 | Hitachi Zosen Corp | Steam turbine equipment |
| CN103244397A (en) * | 2013-05-09 | 2013-08-14 | 国家电网公司 | Optimal operation control method for variable-frequency circulating water pump |
| CN106014997A (en) * | 2016-07-12 | 2016-10-12 | 上海伊莱茨真空技术有限公司 | Three-level-roots-water ring intelligent frequency converting control vacuum system and control method thereof |
| CN114111369A (en) * | 2021-11-23 | 2022-03-01 | 国网河北省电力有限公司电力科学研究院 | Method for determining optimal operation mode of natural ventilation cooling tower wet cooling unit circulating water pump in frequency conversion mode |
-
1981
- 1981-01-09 JP JP120381A patent/JPS57115679A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10280910A (en) * | 1997-04-07 | 1998-10-20 | Hitachi Zosen Corp | Steam turbine equipment |
| CN103244397A (en) * | 2013-05-09 | 2013-08-14 | 国家电网公司 | Optimal operation control method for variable-frequency circulating water pump |
| CN103244397B (en) * | 2013-05-09 | 2015-10-28 | 国家电网公司 | Frequency conversion circulating water pump Optimum operating control method |
| CN106014997A (en) * | 2016-07-12 | 2016-10-12 | 上海伊莱茨真空技术有限公司 | Three-level-roots-water ring intelligent frequency converting control vacuum system and control method thereof |
| CN106014997B (en) * | 2016-07-12 | 2018-07-13 | 上海伊莱茨真空技术有限公司 | A kind of three-level Roots-water ring intelligent frequency-conversion control vacuum system and its control method |
| CN114111369A (en) * | 2021-11-23 | 2022-03-01 | 国网河北省电力有限公司电力科学研究院 | Method for determining optimal operation mode of natural ventilation cooling tower wet cooling unit circulating water pump in frequency conversion mode |
| CN114111369B (en) * | 2021-11-23 | 2023-08-15 | 国网河北省电力有限公司电力科学研究院 | Method for determining optimal operation mode of wet cooling unit matched with natural ventilation cooling tower in variable frequency mode of circulating water pump |
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