CN201705402U - Thermal power plant afterheat generation unit utilizing working substance phase-change circulation - Google Patents
Thermal power plant afterheat generation unit utilizing working substance phase-change circulation Download PDFInfo
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- CN201705402U CN201705402U CN2010202225469U CN201020222546U CN201705402U CN 201705402 U CN201705402 U CN 201705402U CN 2010202225469 U CN2010202225469 U CN 2010202225469U CN 201020222546 U CN201020222546 U CN 201020222546U CN 201705402 U CN201705402 U CN 201705402U
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- heat exchanger
- cooling water
- steam turbine
- thermal power
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Abstract
The utility model discloses a thermal power plant afterheat generation unit utilizing working substance phase-change circulation, which is used in desulfurized thermal power plants and heat power plants, and comprises a flue gas heat exchanger; the flue gas heat exchanger is connected with a chimney; a first working substance steam turbine, a first cooling water heat exchanger, a first working substance circulating pump and the flue gas heat exchanger are mutually connected; a first generator and the first working substance steam turbine are connected; a first water cooling tower, a first cooling water circulating pump and the first cooling water heat exchanger are mutually connected into cooling water circulation; on the other hand, a condenser heat exchanger is arranged among a water supply pump, a deaerator and the steam turbine; a second working substance steam turbine, a second cooling water heat exchanger, a second working substance circulating pump and the condenser heat exchanger are mutually connected; a second generator is connected with the second working substance steam turbine; and a water cooling tower, a second cooling water circulating pump and the second cooling water heat exchanger are mutually connected into cooling water circulation. The thermal power plant afterheat generation unit utilizing working substance phase-change circulation is characterized by high efficiency and low cost.
Description
Technical field:
The utility model relates to a kind of Working fluid phase changing circuit thermal power plant waste heat generating set that utilizes, and is used in thermal power plant by desulfurization, the thermoelectricity plant, reclaims the waste heat of flue gas and vapour condenser, with the device of working medium heat of phase change force engine generating.
Background technique:
At present, the thermal power plant smog discharge temperature is very high the 200-300 degree, utilizes fully, owing to there not being the desulfurization reason, had no idea to utilize in the past, desulfurization has been carried out in the thermal power plant mostly now, further reduce flue-gas temperature, improve generating efficiency and fully may.The vapour condenser exhaust temperature is also very high, is that working medium has no idea to utilize with water vapor.
The model utility content:
In order to address the above problem, the purpose of this utility model is to provide a kind of Working fluid phase changing circuit thermal power plant waste heat generating set that utilizes, and the utlity model has reasonable in design, makes things convenient for characteristics of high efficiency.
For reaching above-mentioned purpose, the utility model adopts following technological scheme, a kind of Working fluid phase changing circuit thermal power plant waste heat generating set that utilizes, be installed on the thermal power generation device, the thermal power generation device comprises boiler, chimney, steam turbine links to each other with boiler respectively, generator links to each other with steam turbine, feed water pump and oxygen-eliminating device are connected in steam turbine, between the boiler, it is characterized in that: described device for generating power by waste heat comprises the flue gas heat exchange device, the flue gas heat exchange device links to each other with chimney, the first working medium steam turbine, first cooling water heat exchanger, interconnect between first working medium circulating pump and the flue gas heat exchange device, first generator links to each other with the first working medium steam turbine, first water cooling tower, be interconnected to form the cooling water circulation between first cooling water circulating pump and first cooling water heat exchanger, on the other hand, the vapour condenser heat exchanger is installed on feed water pump and oxygen-eliminating device, between the steam turbine, the second working medium steam turbine, second cooling water heat exchanger, interconnect between second working medium circulating pump and the vapour condenser heat exchanger, second generator links to each other second water cooling tower with the second working medium steam turbine, second cooling water circulating pump, be interconnected to form the cooling water circulation between second cooling water heat exchanger.
The beneficial effects of the utility model are: a kind of Working fluid phase changing circuit thermal power plant waste heat generating set that utilizes, install working fluid heat exchanger additional at thermal power plant flue afterbody on the one hand, absorb flue gas heat, make refrigeration agent working medium be evaporated to steam, promote the working medium steam turbine power generation.On the other hand, in the vapour condenser of thermal power plant steam turbine, install working fluid heat exchanger additional, absorb vapor condensation heat in the vapour condenser, make refrigeration agent working medium be evaporated to steam, promote the working medium steam turbine power generation.Have reasonable in design, greatly improve the thermal power plant thermal efficiency, cost low, characteristics.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
As shown in Figure 1, a kind of Working fluid phase changing circuit thermal power plant waste heat generating set that utilizes of the present utility model, be installed on the thermal power generation device, the thermal power generation device comprises boiler 3, chimney 2, steam turbine 5 links to each other with boiler 3 respectively, generator 6 links to each other with steam turbine 5, feed water pump and oxygen-eliminating device 4 are connected in steam turbine 5, between the boiler 3, the utility model is by installing device for generating power by waste heat additional on original thermal power generation device, comprise flue gas heat exchange device 1, flue gas heat exchange device 1 links to each other with chimney 2, the first working medium steam turbine 11, first cooling water heat exchanger 12, interconnect between first working medium circulating pump 13 and the flue gas heat exchange device 1, first generator 10 links to each other with the first working medium steam turbine 11, first water cooling tower 14, be interconnected to form the cooling water circulation between first cooling water circulating pump 15 and first cooling water heat exchanger 12, on the other hand, vapour condenser heat exchanger 16 is installed on feed water pump and oxygen-eliminating device 4, between the steam turbine 5, the second working medium steam turbine 7, second cooling water heat exchanger 18, interconnect between second working medium circulating pump 17 and the vapour condenser heat exchanger 16, second generator 8 links to each other with the second working medium steam turbine 7, second water cooling tower 9, second cooling water circulating pump 19, be interconnected to form the cooling water circulation between second cooling water heat exchanger 18.
Working principle of the present utility model is as follows:
Flue gas heat exchange device 1 absorbs heat from boiler smoke, make refrigeration agent working medium be evaporated to steam, promotes 11 work of working medium steam turbine, drives generator 10 generatings.Finish the working medium after the merit, be cooled to liquid state by cooling water heat exchanger 12, then working medium circulating pump 13 is sent flue gas heat exchange device 1 back to, and cooling water is then by cooling tower 14 and atmosphere heat exchange cooling, and cooling water is by recycle pump 15 circulations.On the other hand, in the vapour condenser of thermal power plant steam turbine, install working fluid heat exchanger 16 additional, absorb vapor condensation heat in the vapour condenser, make refrigeration agent working medium be evaporated to steam, promote 7 work of working medium steam turbine, drive generator 8 generatings.Finish the working medium after the merit, be cooled to liquid state by cooling water heat exchanger 18, then working medium circulating pump 17 is sent vapour condenser heat exchanger 16 back to, and cooling water is then by cooling tower 19 and atmosphere heat exchange cooling, and cooling water is by recycle pump 19 circulations.
Phase transformation generating thermodynamic analysis is as follows; Thermal power generation based on Working fluid phase changing circulates by two isopiestic processs, two Rankine cycle systems that adiabatic process is formed.The Working fluid phase changing power generation cycle is the Rankine cycle that is similar to.
High temperature heat source is isothermal level pressure endothermic process in heat exchanger, 1kg working medium caloric receptivity q
1For working medium at heat exchanger level pressure endothermic process total amount of heat: q
1=h
1-h
3 '(1)
h
1, h
3 'Be flue gas heat exchange device 1, vapour condenser heat exchanger 16 is imported and exported enthalpy.
1kg working medium d is at the condenser heat q that presses decided at the higher level but not officially announced
2For:
q
2＝h
2-h
4(2)
h
2, h
4For cooling water heat exchanger 12,18 is imported and exported enthalpy.
1kg working medium is net work W in steam turbine
0=q
1-q
2(3)
The Rankine cycle thermal efficiency
(4).
The utility model becomes gaseous state from liquid state during from the high temperature heat source absorbing heat, the volumetric expansion work done by utilizing the cold-producing medium working medium such as ammonia; During to the low-temperature heat source heat release, volume contraction becomes liquid state again from gaseous state, the pushing turbine acting. It is low to have cost, simple structure, the advantage that the thermal efficiency is high.
Claims (1)
1. one kind is utilized Working fluid phase changing circuit thermal power plant waste heat generating set, be installed on the thermal power generation device, the thermal power generation device comprises boiler, chimney, steam turbine links to each other with boiler respectively, generator links to each other with steam turbine, feed water pump and oxygen-eliminating device are connected in steam turbine, between the boiler, it is characterized in that: described device for generating power by waste heat comprises the flue gas heat exchange device, the flue gas heat exchange device links to each other with chimney, the first working medium steam turbine, first cooling water heat exchanger, interconnect between first working medium circulating pump and the flue gas heat exchange device, first generator links to each other with the first working medium steam turbine, first water cooling tower, be interconnected to form the cooling water circulation between first cooling water circulating pump and first cooling water heat exchanger, on the other hand, the vapour condenser heat exchanger is installed on feed water pump and oxygen-eliminating device, between the steam turbine, the second working medium steam turbine, second cooling water heat exchanger, interconnect between second working medium circulating pump and the vapour condenser heat exchanger, second generator links to each other second water cooling tower with the second working medium steam turbine, second cooling water circulating pump, be interconnected to form the cooling water circulation between second cooling water heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202225469U CN201705402U (en) | 2010-06-11 | 2010-06-11 | Thermal power plant afterheat generation unit utilizing working substance phase-change circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202225469U CN201705402U (en) | 2010-06-11 | 2010-06-11 | Thermal power plant afterheat generation unit utilizing working substance phase-change circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705402U true CN201705402U (en) | 2011-01-12 |
Family
ID=43442556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202225469U Expired - Fee Related CN201705402U (en) | 2010-06-11 | 2010-06-11 | Thermal power plant afterheat generation unit utilizing working substance phase-change circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705402U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892879A (en) * | 2010-07-09 | 2010-11-24 | 绍兴文理学院 | Thermal power plant waste heat generating set using working medium phase-change circulation |
| CN104848709A (en) * | 2014-02-19 | 2015-08-19 | 王建国 | Process system capable of improving heat efficiency of generator set |
| CN114439561A (en) * | 2021-12-20 | 2022-05-06 | 华电电力科学研究院有限公司 | Boiler flue gas waste heat recovery power generation system and method thereof |
-
2010
- 2010-06-11 CN CN2010202225469U patent/CN201705402U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892879A (en) * | 2010-07-09 | 2010-11-24 | 绍兴文理学院 | Thermal power plant waste heat generating set using working medium phase-change circulation |
| CN104848709A (en) * | 2014-02-19 | 2015-08-19 | 王建国 | Process system capable of improving heat efficiency of generator set |
| CN114439561A (en) * | 2021-12-20 | 2022-05-06 | 华电电力科学研究院有限公司 | Boiler flue gas waste heat recovery power generation system and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20130611 |