CN2429732Y - Heat circulation apparatus for thermal power station - Google Patents
Heat circulation apparatus for thermal power station Download PDFInfo
- Publication number
- CN2429732Y CN2429732Y CN 00221146 CN00221146U CN2429732Y CN 2429732 Y CN2429732 Y CN 2429732Y CN 00221146 CN00221146 CN 00221146 CN 00221146 U CN00221146 U CN 00221146U CN 2429732 Y CN2429732 Y CN 2429732Y
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- heater
- extraction
- heat
- extraction heater
- solar
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Abstract
The utility model discloses a heat return circulation apparatus for a thermal power station, which comprises gas turbines connected orderly in series, a condenser, a water supply pump and an extraction heater. A heat return gas extraction pipe is bridged between the gas turbines and the extraction heater, particularly the front or the back of the extraction heater is connected with a solar heater in series, extra heat energy can be obtained from the outside of the extraction heater by the solar heater to heat the supplied water, the temperature of the supplied water is improved, heat efficiency is accordingly improved, and the extraction heater and the solar heater can be mutually matched through adjusting an adjustable valve to ensure the stability of the temperature of the supplied water after the heating action of the solar heater is reduced at night or in a rainy day.
Description
The utility model relates to a kind of steam power plant backheat EGR.
Electric energy is one of energy of using always of people, generally comes from waterpower or thermal power generation.When adopting thermal power generation, be energy savings, the part steam that often will do merit is in order to heated feed water.As publish China Machine Press in December, 1987 " the 15th piece of " thermal power generation " literary composition of Electrical Engineer's handbook once disclose a kind of steam turbine and EGR thereof with the backheat that feeds water.Constituting by overheated steam pipe of it connects boiler and steam turbine, behind the steam turbine successively preface be connected to condenser, feed pump and extraction heater, extraction heater is connected through feed pipe and boiler again, draws to pick out the regenerative steam pipe after some intergrade of steam turbine, and direct and extraction heater joins.This feedwater backheat EGR is because the heat of bleeder steam is used to heated feed water, the cold source energy of circulation reduces, therefore steam just, under the identical situation of end condition, the thermal efficiency backheat circulation of more not feeding water significantly improves, if backwater progression the more, the thermal efficiency height of also will healing, but the corresponding increase of equipment investment, system complex, the speed that the thermal efficiency increases then slows down, therefore, the backheat progression of practical application is restricted, and the thermal efficiency is further improved be subjected to inhibition.
The purpose of this utility model provides a kind of steam power plant's backheat EGR that investment not quite can improve feed temperature effectively that increases.
For achieving the above object, the utility model comprises steam turbine, condenser, feed pump and the extraction heater of serial connection successively, and the cross-over connection of regenerative steam pipe particularly is serially connected with solar heater before or after extraction heater between steam turbine and extraction heater.
As further improvement of the utility model, described solar heater be connected in parallel more than two, its inner chamber is for to the transparent body of aquaporin, this transparent body is double-deck, its interlayer is a negative pressure, and be placed in paraboloidal focus place, the surface of described inner chamber is covered with the radiation absorbing film, is serially connected with control valve between described regenerative steam pipe and extraction heater.
After adopting such structure,, come the feedwater heating has been improved the temperature of feedwater, the thermal efficiency is improved so make the utility model can outside extraction heater, obtain extra heat energy because solar heater is serially connected in the feed water circuit.The setting of backheat exhaust tube adjusted valve can cooperatively interact extraction heater and solar heater, to adapt to night or after the solar heater heat effect reduces when overcast and rainy, still can ensure to the stable of coolant-temperature gage.
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Fig. 1 is a kind of basic structure schematic diagram of the present utility model.
Fig. 2 is the local enlarged diagram of solar heater among Fig. 1.
Fig. 3 be Fig. 2 A-A to generalized section.
As Fig. 1, Fig. 2 and shown in Figure 3, boiler 1 joins through overheated steam pipe 2, feed pipe 8 and the steam turbine 3 that is connected in series successively, condenser 4, feed pump 5, extraction heater 6 and solar heater 7 respectively, wherein solar heater 7 be connected in parallel more than 20, its inner chamber 70 is the transparent body 71 to aquaporin, this transparent body 71 is double-deck, its interlayer is a negative pressure, and is placed in parabolic 73 focus place; The surface of transparent body inner chamber 70 is covered with radiation absorbing film 72.Steam turbine 3 middle parts have picked out regenerative steam pipe 9, and this pipe 9 joins through control valve 10 and extraction heater 6, to constitute the utility model.
During use,, can obtain the feedwater that has improved temperature by after solar heater 7 heating as long as sunlight is arranged.If then adjust control valve 10 night or overcast and rainy, still can obtain required feed temperature by extraction heater 6 heating backs.
Claims (3)
1, a kind of steam power plant backheat EGR, comprise steam turbine (3), condenser (4), feed pump (5) and the extraction heater (6) of serial connection successively, regenerative steam pipe (9) cross-over connection is characterized in that between steam turbine (3) and extraction heater (6): be serially connected with solar heater (7) before or after extraction heater (6).
2, device according to claim 1, it is characterized in that solar heater (7) be connected in parallel more than two, its inner chamber (70) is for to the transparent body (71) of aquaporin, the surface of described inner chamber (70) is covered with radiation absorbing film (72), the described transparent body (71) is double-deck, its interlayer is a negative pressure, and this transparent body (71) is placed in the focus place of parabola (73).
3, device according to claim 1 is characterized in that being serially connected with control valve (10) between regenerative steam pipe (9) and extraction heater (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221146 CN2429732Y (en) | 2000-07-21 | 2000-07-21 | Heat circulation apparatus for thermal power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221146 CN2429732Y (en) | 2000-07-21 | 2000-07-21 | Heat circulation apparatus for thermal power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2429732Y true CN2429732Y (en) | 2001-05-09 |
Family
ID=33586089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00221146 Expired - Fee Related CN2429732Y (en) | 2000-07-21 | 2000-07-21 | Heat circulation apparatus for thermal power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2429732Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260815B (en) * | 2008-04-24 | 2010-06-02 | 华北电力大学 | Paraboloid trough type solar heat-collector auxiliary coal-burning boiler mixing heat power generation system |
| CN101846044A (en) * | 2010-04-16 | 2010-09-29 | 华中科技大学 | Solar heat collection, energy storage and back heating system applied to thermal generator set |
| CN101886884A (en) * | 2010-06-02 | 2010-11-17 | 上海迪吉特控制系统有限公司 | Circulating cooling water solar energy saving and controlling device for coal-based power plant |
| CN102405349A (en) * | 2009-04-18 | 2012-04-04 | 阿尔斯通技术有限公司 | Steam power plant having solar collectors |
| CN103590862A (en) * | 2012-11-13 | 2014-02-19 | 摩尔动力(北京)技术股份有限公司 | High-pressure continuous regeneration engine |
-
2000
- 2000-07-21 CN CN 00221146 patent/CN2429732Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260815B (en) * | 2008-04-24 | 2010-06-02 | 华北电力大学 | Paraboloid trough type solar heat-collector auxiliary coal-burning boiler mixing heat power generation system |
| CN102405349A (en) * | 2009-04-18 | 2012-04-04 | 阿尔斯通技术有限公司 | Steam power plant having solar collectors |
| CN102405349B (en) * | 2009-04-18 | 2015-11-25 | 阿尔斯通技术有限公司 | There is the steam power station of solar collector |
| US9745964B2 (en) | 2009-04-18 | 2017-08-29 | General Electric Technology Gmbh | Steam power plant having solar collectors |
| CN101846044A (en) * | 2010-04-16 | 2010-09-29 | 华中科技大学 | Solar heat collection, energy storage and back heating system applied to thermal generator set |
| CN101886884A (en) * | 2010-06-02 | 2010-11-17 | 上海迪吉特控制系统有限公司 | Circulating cooling water solar energy saving and controlling device for coal-based power plant |
| CN103590862A (en) * | 2012-11-13 | 2014-02-19 | 摩尔动力(北京)技术股份有限公司 | High-pressure continuous regeneration engine |
| CN103590862B (en) * | 2012-11-13 | 2015-08-19 | 摩尔动力(北京)技术股份有限公司 | The continuous regeneration engine of high pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| FG1K | Grant of utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |