JPS6410004A - Method of controlling temperature of boiler main steam - Google Patents
Method of controlling temperature of boiler main steamInfo
- Publication number
- JPS6410004A JPS6410004A JP16516487A JP16516487A JPS6410004A JP S6410004 A JPS6410004 A JP S6410004A JP 16516487 A JP16516487 A JP 16516487A JP 16516487 A JP16516487 A JP 16516487A JP S6410004 A JPS6410004 A JP S6410004A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- main steam
- superheater
- water
- rated level
- 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
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
PURPOSE: To lessen thermal fatigue damage significantly by spraying a quantity of water determined from the temperature difference when the main steam temperature exceeds a rated level to a superheating temperature lowering unit otherwise spraying a specified small quantity of water. CONSTITUTION: A superheater spray control valve 16 is controlled to spray a quantity of water determined from the temperature difference when the main steam temperature in a main steam pipe 13 exceeds a rated level into a superheater temperature, lowering unit 10. The superheater spray control valve 16 is provided with a so-called minimum lock in order to inject a minimum required superheater spray water when the main steam temperature is lower than the rated level thus preventing full closure. According to the arrangement, temperature variation of a superheater spray nozzle can be lessened significantly and thermal fatigue thereof can be substantially eliminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16516487A JPS6410004A (en) | 1987-07-03 | 1987-07-03 | Method of controlling temperature of boiler main steam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16516487A JPS6410004A (en) | 1987-07-03 | 1987-07-03 | Method of controlling temperature of boiler main steam |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6410004A true JPS6410004A (en) | 1989-01-13 |
Family
ID=15807081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16516487A Pending JPS6410004A (en) | 1987-07-03 | 1987-07-03 | Method of controlling temperature of boiler main steam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6410004A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103486568A (en) * | 2013-09-22 | 2014-01-01 | 江苏科技大学 | Immersed temperature-decreased pressure reducer |
CN103672860A (en) * | 2013-12-26 | 2014-03-26 | 哈尔滨哈锅锅炉工程技术有限公司 | Combined desuperheating system for boiler |
WO2018100821A1 (en) * | 2016-11-29 | 2018-06-07 | 株式会社神鋼環境ソリューション | Steam temperature control device and control unit including same |
-
1987
- 1987-07-03 JP JP16516487A patent/JPS6410004A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103486568A (en) * | 2013-09-22 | 2014-01-01 | 江苏科技大学 | Immersed temperature-decreased pressure reducer |
CN103486568B (en) * | 2013-09-22 | 2015-06-03 | 江苏科技大学 | Immersed temperature-decreased pressure reducer |
CN103672860A (en) * | 2013-12-26 | 2014-03-26 | 哈尔滨哈锅锅炉工程技术有限公司 | Combined desuperheating system for boiler |
WO2018100821A1 (en) * | 2016-11-29 | 2018-06-07 | 株式会社神鋼環境ソリューション | Steam temperature control device and control unit including same |
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