GB771715A - Improvements in or relating to automatic control systems for forced flow once through steam boilers - Google Patents
Improvements in or relating to automatic control systems for forced flow once through steam boilersInfo
- Publication number
- GB771715A GB771715A GB19527/55A GB1952755A GB771715A GB 771715 A GB771715 A GB 771715A GB 19527/55 A GB19527/55 A GB 19527/55A GB 1952755 A GB1952755 A GB 1952755A GB 771715 A GB771715 A GB 771715A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- boiler
- regulator
- temperature
- stla
- 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.)
- Expired
Links
- 238000001704 evaporation Methods 0.000 abstract 2
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
- F22B35/10—Control systems for steam boilers for steam boilers of forced-flow type of once-through type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/20—Controlling superheat temperature by combined controlling procedures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
771,715. Forced-flow steam boilers. SIEMENS-SCHUCKERTWERKE AKT.- GES. July 6, 1955 [July 12, 1954], No. 19527/55. Class 123(2) In a forced - flow once-through boiler comprising an economiser E, evaporating sections V<SP>1</SP>, V<SP>2</SP> and a superheater U wherein the regulators RK, RL,'RSP for the fuel, combustion air and feedwater respectively are adjusted by a device STLa in response to changes in boiler load, the device being controlled' by a pressure sensitive regulator RD which measures changes in the superheated steam outlet pressure P and wherein, to reduce the time lag between a change in load and the corresponding regulator adjustments, the feed water regulator RSP is also controlled to maintain a predetermined temperature at a point T in the boiler tube system, the coritrol temperature at T is adjusted according to the prevailing load on the boiler in a compensating device RT operatively connected to the load controlled device STLa as indicated by line ta. Thus for example, when the pressure P increases, the device STLa sets the regulators for a smaller load and the control temperature at T increases to allow for the fact that the evaporating zone is displaced towards the boiler inlet. If the temperature at T differs from the new control temperature, a supplementary adjustment of the feed regulator is then made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19527/55A GB771715A (en) | 1955-07-06 | 1955-07-06 | Improvements in or relating to automatic control systems for forced flow once through steam boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19527/55A GB771715A (en) | 1955-07-06 | 1955-07-06 | Improvements in or relating to automatic control systems for forced flow once through steam boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB771715A true GB771715A (en) | 1957-04-03 |
Family
ID=6679368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19527/55A Expired GB771715A (en) | 1955-07-06 | 1955-07-06 | Improvements in or relating to automatic control systems for forced flow once through steam boilers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB771715A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125073A (en) * | 1964-03-17 | Profos | ||
| US3244898A (en) * | 1959-12-29 | 1966-04-05 | Combustion Eng | Power plant system and control therefor |
-
1955
- 1955-07-06 GB GB19527/55A patent/GB771715A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125073A (en) * | 1964-03-17 | Profos | ||
| US3244898A (en) * | 1959-12-29 | 1966-04-05 | Combustion Eng | Power plant system and control therefor |
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