JPS54118902A - Steam cut-off valve warming equipment - Google Patents
Steam cut-off valve warming equipmentInfo
- Publication number
- JPS54118902A JPS54118902A JP2549278A JP2549278A JPS54118902A JP S54118902 A JPS54118902 A JP S54118902A JP 2549278 A JP2549278 A JP 2549278A JP 2549278 A JP2549278 A JP 2549278A JP S54118902 A JPS54118902 A JP S54118902A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- valve
- cut
- steam cut
- temperature
- 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 Turbines (AREA)
Abstract
PURPOSE: To prevent heat stress and fatigue by preheating the units from a steam line of BFPT to a steam cut-off valve.
CONSTITUTION: A computer 13 is connected with a steam cut-off valve operating unit 14, which includes a steam cut-off valve operating unit 14, a process input unit 15, a comparision determining unit 16, a difference calcurator 17 between steam temperature and steam cut-off valve external metal temperature, an external metal temperature difference calcurator 18 in a steam cut-off valve, a timer 19, and a process output unit 20. When temperature of boiler steam rises up to a specified value after a power plant is started, the comparison determinating unit 16 determines the need of warming from checking the internal temperature of a steam cut- off valve and external metal temperature and the high-pressure steam cut-off valve 3 is opened to allow boiler steam through in a steam line. When a difference between the internal temperature of a high-pressure steam cut-off valve and external metal temperature exceeds a specified value, a high-pressure steam cut-off valve 3 is closed so that the units from a steam line to a high-pressure steam cut-off valve 3 may be preheated.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2549278A JPS54118902A (en) | 1978-03-08 | 1978-03-08 | Steam cut-off valve warming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2549278A JPS54118902A (en) | 1978-03-08 | 1978-03-08 | Steam cut-off valve warming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54118902A true JPS54118902A (en) | 1979-09-14 |
Family
ID=12167546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2549278A Pending JPS54118902A (en) | 1978-03-08 | 1978-03-08 | Steam cut-off valve warming equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54118902A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5985403A (en) * | 1982-11-08 | 1984-05-17 | Toshiba Corp | Bypass-valve warming apparatus for turbine |
| JPH04262005A (en) * | 1991-02-16 | 1992-09-17 | Toshiba Corp | Main steam control valve chest warming method |
| JP2009156215A (en) * | 2007-12-27 | 2009-07-16 | Chugoku Electric Power Co Inc:The | Method and system for warming block valve |
| CN103161521A (en) * | 2011-12-14 | 2013-06-19 | 通用电气公司 | System and method for warming up a steam turbine |
-
1978
- 1978-03-08 JP JP2549278A patent/JPS54118902A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5985403A (en) * | 1982-11-08 | 1984-05-17 | Toshiba Corp | Bypass-valve warming apparatus for turbine |
| JPH0423088B2 (en) * | 1982-11-08 | 1992-04-21 | Tokyo Shibaura Electric Co | |
| JPH04262005A (en) * | 1991-02-16 | 1992-09-17 | Toshiba Corp | Main steam control valve chest warming method |
| JP2009156215A (en) * | 2007-12-27 | 2009-07-16 | Chugoku Electric Power Co Inc:The | Method and system for warming block valve |
| CN103161521A (en) * | 2011-12-14 | 2013-06-19 | 通用电气公司 | System and method for warming up a steam turbine |
| US9903231B2 (en) | 2011-12-14 | 2018-02-27 | General Electric Company | System and method for warming up a steam turbine |
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