GB843661A - Improvements in the control of steam temperature of boiler plants - Google Patents
Improvements in the control of steam temperature of boiler plantsInfo
- Publication number
- GB843661A GB843661A GB28516/57A GB2851657A GB843661A GB 843661 A GB843661 A GB 843661A GB 28516/57 A GB28516/57 A GB 28516/57A GB 2851657 A GB2851657 A GB 2851657A GB 843661 A GB843661 A GB 843661A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat exchanger
- feedwater
- flow
- steam
- boiler
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/16—Controlling superheat temperature by indirectly cooling or heating the superheated steam in auxiliary enclosed heat-exchanger
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
843,661. Regulating steam temperature in boilers. WALTHER & CIE A.G. Sept. 10, 1957 [Sept. 21, 1956], No. 28516/57. Class 123(3) In a forced-flow, once-through boiler feedwater is supplied by a pump 6 through preheaters 7, 8, 9 to a heat exchanger 10 wherein it comes into indirect contact with steam returning to the boiler through a line 16<SP>1</SP> from the first stage of a turbine for reheating in a reheater 17. The water is partially evaporated in the heat exchanger and flows therefrom through a final evaporator 15 and a superheater 12 to the turbine. The flow of feedwater through the heat exchanger is not controlled and hence depends on boiler load, the amount of attemperation of the steam to be reheated thus being automatically related to load. A by-pass controlled by a valve 14 is provided, however, for fine adjustment of reheat temperature. In the form shown in Fig. 2, the heat exchanger consists of a series of pipes 23 connected between headers 20, 21 which are also connected by the by-pass 22 containing the valve 14. Within each pipe 23 is a coaxial pipe carrying the attemperating feedwater flow. Shut-off valves 24...26 are provided to enable each pipe 23 to be removed for cleaning or replacement without unduly affecting the operation of the unit. In another form, the heat exchanger consists of an upright casing through which the feedwater flows and which contains a bank of nested U-tubes for the steam flow.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE843661X | 1956-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB843661A true GB843661A (en) | 1960-08-10 |
Family
ID=6773749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28516/57A Expired GB843661A (en) | 1956-09-21 | 1957-09-10 | Improvements in the control of steam temperature of boiler plants |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB843661A (en) |
-
1957
- 1957-09-10 GB GB28516/57A patent/GB843661A/en not_active Expired
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