CN202092374U - Heat pump special for power station - Google Patents
Heat pump special for power station Download PDFInfo
- Publication number
- CN202092374U CN202092374U CN2011201831767U CN201120183176U CN202092374U CN 202092374 U CN202092374 U CN 202092374U CN 2011201831767 U CN2011201831767 U CN 2011201831767U CN 201120183176 U CN201120183176 U CN 201120183176U CN 202092374 U CN202092374 U CN 202092374U
- Authority
- CN
- China
- Prior art keywords
- heat pump
- heat
- condenser
- water
- power plant
- 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 - Fee Related
Links
Images
Abstract
The utility model provides a heat pump special for power station, which divides condensation water of a condenser into two parts. One part of the condensation water of the condenser serves as a heat source of the heat pump for collecting heat, the cooled condensation water flows back to the condenser, neutralizes and cools the heat of waste steam, low saturated steam pressure is maintained, and then condensation water is formed again. The other part of the condensation water of the condenser serves as heated liquid of the heat pump, the heated liquid of the heat pump carries recycled heat which is sent to a low pressure heater by a condensate pump, and therefore heat is recycled by the heat pump. The heat pump has the advantages that the condensation water is divided into the heat source of the heat pump and the heated liquid so that a structure of an existing condenser for external heat exchange is omitted, water for a cooling tower is saved, and heat emission and heat exchange energy consumption are reduced. Meanwhile, heat of the waste steam can be directly recycled, electricity generation efficiency is improved, namely, compared with an existing electricity generation level of 340 grams per kilowatt hour, and fire coal of 20 grams to 60 grams per kilowatt hour can be saved. Additionally, part of low grade energy can be recycled.
Description
Technical field
The utility model relates to a kind of heat pump, especially the power plant dedicated for heat pump.
Background technology
Thermal power plant is called for short in present thermal power plant, be to utilize coal, oil, natural gas to act as a fuel to produce the factory of electric energy, its basic process of production is: fuel burns in boiler and adds hot water and make into steam, the chemical energy of fuel is transformed into heat energy, the rotation of steam pressure pushing turbine, thermal power transfer becomes mechanical energy, and steam turbine drives the generator rotation then, and mechanical energy is transformed into electric energy.
Coal is transported to the coal bunker from coal yard with coal conveyer belt.Large thermal power plant all is a combusting coal fines for improving efficiency of fire coal.Therefore, the raw coal in the coal bunker will be delivered to earlier and wear into coal dust in the coal pulverizer.The coal dust that grinds is carried the burner hearth internal combustion of sending into boiler through Powder discharging fan by hot-air.The hot flue gas that forms behind the coal dust firing flows along the horizontal flue and the back-end ductwork of boiler, emits heat, enters deduster at last, and the coal ash after the burning is separated.Clean flue gas enters atmosphere by chimney under the effect of air-introduced machine.The air of combustion-supporting usefulness is sent in the air preheater that is installed on the back-end ductwork by pressure fan, utilizes hot flue gas to add hot-air.Like this, remove on the one hand the air themperature that enters boiler is improved, be easy to also can reduce exhaust gas temperature on the other hand, the utilization rate of raising heat energy outside the catching fire and burn of coal dust.The hot-air of discharging from air preheater is divided into two strands: one removes coal pulverizer drying and pulverized coal conveying, and it is combustion-supporting that another strand directly sent into burner hearth.The lime-ash of coal-fired after-flame falls in the slag bucket below the burner hearth, with dashing to the mortar pump house from the isolated thin ash water of deduster, delivers to ash by slurry pump again.
The water of thermal power plant in deaerator storage tank is sent into economizer by high-pressure heater after boosting through feed pump.In economizer, water is subjected to the heating of hot flue gas, enters then in the drum at boiler top.Around boiler furnace, be thick with water pipe, be called water-cooling wall.The two ends up and down of water-cooling wall water pipe all are communicated with drum by header, and the water in the drum constantly circulates via water-cooling wall, are absorbing coal and are liking liberated heat in the combustion process.Part water is vaporized into water vapour after Leng Bizhong is heated boiling, these saturated vapors are flowed out by drum top and enter in the superheater.Saturated vapor continues heat absorption in superheater, become superheated steam.Superheated steam has very high pressure and temperature, and therefore very big calorific potential energy is arranged.Superheated steam with calorific potential energy just can be transformed into kinetic energy with calorific potential after pipeline is introduced steam turbine.Swiftly flowing steam pushing turbine rotor rotation forms mechanical energy.
The rotor of steam turbine is associated in by shaft joint with the rotor of generator.Just driving generator amature when turbine rotor rotates rotates.A too little dc generator at the other end band of generator amature, be exciter.The direct current that exciter sends is delivered in the rotor coil of generator, makes rotor become electromagnet, produces magnetic field on every side.When generator amature rotated, magnetic field also rotated, and the lead in the generator unit stator will the cutting magnetic line induction produce electric current.Like this, generator just changes the mechanical energy of steam turbine into electric energy.Electric energy is delivered to electric user by power transmission line after transformer is with boost in voltage.
The steam that discharges the calorific potential energy is discharged from the steam drain of steam turbine bottom, is called exhaust steam.Exhaust steam is recycled the water quench that water pump is sent into condenser in condenser, from newly condensing into water, this water becomes condensate water.Condensate water is sent into low-pressure heater by condensate pump and is finally got back in the oxygen-eliminating device, finishes a circulation.The leakage of carbonated drink is arranged in cyclic process unavoidably, i.e. loss of steam and water, therefore some water of supply in the circulatory system in right amount are to guarantee normally carrying out of circulation.High, base pressure heater is for improving the device that the thermal efficiency adopted of circulation, and oxygen-eliminating device is in order to remove the oxygen that contains of anhydrating to reduce equipment and Corrosion of Pipeline.
But have a large amount of cooling waters to produce like this, open circulation forms hot driving, and closed cycle need enter cooling tower again and carry out hot driving; Improve generating efficiency because condenser need be kept lower saturated vapour pressure simultaneously, so the condenser temperature can be very low, condensate water is also lower with regard to temperature, needs in the process recycling to reheat, and expends a large amount of fuel.
Summary of the invention
In order to improve the generating efficiency in power plant, of the present utility modelly provide a kind of device that can keep the lower saturated vapour pressure of condenser and carry out heat recovery.
A kind of power plant dedicated for heat pump, thermal power generation comprises steam turbine, condenser, low pressure bleeder heater, oxygen-eliminating device, high pressure bleeder heater, boiler, heat pump is a power for consuming the high-quality energy of sub-fraction, the device that heat energy is transmitted to high temperature heat source from low-temperature heat source, it is characterized in that the condenser back is provided with connection water hydrothermal exchange heat pump, the evaporimeter water inlet of heat pump and delivery port are all in condenser, the inlet pipeline of radiator is also in condenser, the other end inserts the low pressure bleeder heater, and radiator, evaporimeter constitute water water exchange heat pump.
The beneficial effects of the utility model are: employing is divided into two condensate water for source heat pump heat and is heated liquid, can omit the structure that present condenser is needed external heat exchange, save the cooling tower water, reduce hot driving and reduce the heat exchange energy loss, simultaneously can be directly the heat of exhaust steam be reclaimed the raising generating efficiency.
Description of drawings
Accompanying drawing 1 is the fundamental diagram of the utility model power plant dedicated for heat pump.
Wherein: 1, steam turbine; 2, condenser; 3, water circulating pump; 4, condensate pump; 5, evaporator with heat pump; 6, heat pump compressor; 7, the heat pump radiator; 8, boiler; 9, the high pressure bleeder heater; 10, oxygen-eliminating device; 11, the low pressure bleeder heater.
The specific embodiment
Below in conjunction with drawings and Examples utility model is further specified.
Steam is after steam turbine 1 acting, form exhaust steam and enter condenser 2, the liquid that dispels the heat that is cooled is divided into two, a part flowed down at water circulating pump in 3 minutes, process evaporator with heat pump 5 extracts heats and lowers the temperature, be back to condenser 2 then, to exhaust steam mixing cooling, another part drives through condensate pump 4, process heat pump radiator 7 absorbs heats and heats, enter low pressure bleeder heater 11, evaporator with heat pump 5, heat pump compressor 6, heat pump radiator 7 constitutes a heat pump cycle, steam turbine 1, condenser 2, low pressure bleeder heater 11, oxygen-eliminating device 10, high pressure bleeder heater 9, boiler 8 constitutes a thermal power generation circulation, so just can the heat of exhaust steam be reclaimed, and makes condenser keep lower saturated vapour pressure.
In the prioritization scheme 1, heat pump adopts helical-lobe compressor.
In the prioritization scheme 2, heat pump adopts centrifugal compressor.
In the prioritization scheme 3, the compressor of heat pump adopts high-tension motor to drive.
In the prioritization scheme 4, the compressor of heat pump adopts steam engine to drive.
In the prioritization scheme 5, extracted heat as the condensate water of thermal source by heat pump after, temperature is controlled at 5～45 degrees centigrade.
In the prioritization scheme 6, extracted heat as the condensate water of thermal source by heat pump after, temperature is controlled at 15～35 degrees centigrade.
In the prioritization scheme 7, extracted heat as the condensate water of thermal source by heat pump after, temperature is controlled at 20～30 degrees centigrade.
In the prioritization scheme 8, after being extracted heat and form water at low temperature by heat pump as the condensate water of thermal source, insert the spray thrower in the condenser, the spray mode is cooled off exhaust steam.
In the prioritization scheme 9, as be heated liquid by heat pump after, temperature is controlled at 60～90 degrees centigrade.
In the prioritization scheme 10, heat pump reclaims heat more than needed and can adopt absorption heat pump to improve the temperature of heated condensate water once more.
In the prioritization scheme 11, heat pump reclaims heat more than needed can supply 60～90 degrees centigrade of hot water to external world.
In the prioritization scheme 12, heat pump need increase the pipeline circulation balance is carried out at cold and hot two ends.
In the case study on implementation, 30～100MW unit, generating accounts for about 32% with heat, hot driving during condensing accounts for about 50%, by centrifugal heat pump and absorption heat pump, can reclaim 15～25% heat, and the temperature that enters the low-pressure heater condensate water can be brought up to 90～105 degree, so just can save coal-fired consumption significantly; The condensing water temperature of Hui Liuing is 10～30 degree in addition, can provide low-temperature receiver to exhaust steam condensation 10～30 degree of lowering the temperature for condenser, reduce condenser saturated vapour pressure 20000～40000 handkerchiefs, improve generating efficiency 5～10%, can also reclaim 20～30% 60～105 degree tow taste heats of total energy consumption in addition.
During concrete the application, because than present heat exchanger water-cooled with air-cooledly keep lower saturated vapour pressure, can make whole generating efficiency improve 5～10%, simultaneously heat is reclaimed, make the condensate water initial temperature that enters the low pressure bleeder heater improve 20～65 degrees centigrade, can save the Coal-fired capacity about 8～10% like this, and this heat pump COP is high, can reach more than 6.0, the actual driving consumes seldom, and generating efficiency improves 12～15% under the Coal-fired capacity same case, power generation level when just comparing present 340 grams/kilowatt *, in the time of can saving coal-fired 20～60 grams/kilowatt *, can also reclaim 20～30% 60～105 degree tow taste heats of total energy consumption in addition.
Claims (8)
1. power plant dedicated for heat pump, thermal power generation comprises steam turbine, condenser, low pressure bleeder heater, oxygen-eliminating device, high pressure bleeder heater, boiler, heat pump is a power for consuming the high-quality energy of sub-fraction, the device that heat energy is transmitted to high temperature heat source from low-temperature heat source, it is characterized in that the condenser back is provided with connection water hydrothermal exchange heat pump, the evaporimeter water inlet of heat pump and delivery port are all in condenser, the inlet pipeline of radiator is also in condenser, the other end inserts the low pressure bleeder heater, and radiator, evaporimeter constitute water water exchange heat pump.
2. power plant according to claim 1 dedicated for heat pump is characterized in that heat pump adopts helical-lobe compressor.
3. power plant according to claim 1 dedicated for heat pump is characterized in that heat pump adopts centrifugal compressor.
4. power plant according to claim 1 dedicated for heat pump is characterized in that the compressor of heat pump adopts high-tension motor to drive.
5. power plant according to claim 1 dedicated for heat pump is characterized in that the compressor of heat pump adopts steam engine to drive.
6. power plant according to claim 1 dedicated for heat pump, after it is characterized in that being extracted heat as the condensate water of thermal source by heat pump, temperature is controlled at 15～35 degrees centigrade.
7. power plant according to claim 1 dedicated for heat pump is characterized in that as the spray thrower in the condensate water access condenser of thermal source.
8. power plant according to claim 1 dedicated for heat pump is characterized in that heat pump need increase the pipeline circulation balance is carried out at cold and hot two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201831767U CN202092374U (en) | 2011-06-02 | 2011-06-02 | Heat pump special for power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201831767U CN202092374U (en) | 2011-06-02 | 2011-06-02 | Heat pump special for power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202092374U true CN202092374U (en) | 2011-12-28 |
Family
ID=45367440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201831767U Expired - Fee Related CN202092374U (en) | 2011-06-02 | 2011-06-02 | Heat pump special for power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202092374U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775141A (en) * | 2012-12-18 | 2014-05-07 | 苟仲武 | Improved steam condensing type steam turbine electricity generation system with pump assisting in cooling and electricity generation method of electricity generation system |
| CN103806963A (en) * | 2012-12-17 | 2014-05-21 | 苟仲武 | Improved condensing type turbine generator and electricity generation method thereof |
| CN107869712A (en) * | 2016-11-24 | 2018-04-03 | 蒋钧 | Cool island power economized boiler |
| CN108343938A (en) * | 2018-04-26 | 2018-07-31 | 陈洁 | Full-automatic energy-saving environmental protection steam generation facility |
-
2011
- 2011-06-02 CN CN2011201831767U patent/CN202092374U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806963A (en) * | 2012-12-17 | 2014-05-21 | 苟仲武 | Improved condensing type turbine generator and electricity generation method thereof |
| CN103806963B (en) * | 2012-12-17 | 2015-11-04 | 苟仲武 | Modified model condensing steam turbine generator and electricity-generating method thereof |
| CN103775141A (en) * | 2012-12-18 | 2014-05-07 | 苟仲武 | Improved steam condensing type steam turbine electricity generation system with pump assisting in cooling and electricity generation method of electricity generation system |
| CN107869712A (en) * | 2016-11-24 | 2018-04-03 | 蒋钧 | Cool island power economized boiler |
| CN108343938A (en) * | 2018-04-26 | 2018-07-31 | 陈洁 | Full-automatic energy-saving environmental protection steam generation facility |
| CN108343938B (en) * | 2018-04-26 | 2023-10-03 | 宜昌市禹猫智能科技有限公司 | Full-automatic energy-saving environment-friendly steam generating device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104482772B (en) | Vertical sintering waste heat drives cooling heating and power generation system and method thereof | |
| CN101696643B (en) | Low-temperature heat energy recovering apparatus of heat and electricity co-generation and recovering method thereof | |
| CN105485649B (en) | A kind of efficient waste heat recycling utilization system | |
| CN105179023B (en) | A kind of predrying brown coal electricity generation system of integrated first-class absorption type heat pump and method | |
| CN202177093U (en) | Multi-level efficient displacement type fume waste-heat utilization system | |
| CN101178017A (en) | Method for recycling and regenerating steel plant residual heat boiler saturated steam | |
| CN201218660Y (en) | Power generation apparatus by waste heat of sintering production | |
| CN201103894Y (en) | Saturated steam heating stove | |
| CN107905897A (en) | Gas turbine cycle flue gas waste heat recovery and inlet gas cooling association system and method | |
| CN106839513A (en) | Electric power plant circulating water residual heat pump utilizes the energy conserving system combined with natural water accumulation of heat | |
| CN202092374U (en) | Heat pump special for power station | |
| CN104500158B (en) | A kind of low concentration coal-bed gas or gas electricity system | |
| CN103574587A (en) | Waste heat utilizing system of thermal power plant and thermal power unit | |
| CN106121822A (en) | A kind of coal gasification distributed energy resource system and operation method thereof | |
| CN105179031B (en) | The classification predrying brown coal electricity generation system of a kind of integrated absorption heat pump and method | |
| CN106351765B (en) | A kind of electric heating co-feeding system and its electric heating method of combined supply based on Stirling-electric hybrid | |
| CN104501608B (en) | The device and method of the overheated heating furnace saturated vapor of a kind of sintering large flue waste heat | |
| CN113072967A (en) | Poly-generation process for coupling coal and biomass pyrolysis | |
| CN202452758U (en) | System for improving cooling efficiency of power plant through waste heat recovery | |
| CN102261768A (en) | Heat pump special for power station | |
| CN208040541U (en) | Gas turbine cycle flue gas waste heat recovery and inlet gas cooling association system | |
| CN103334802B (en) | Thermoelectric-coupling type comprehensive energy-utilizing system based on air-cooling device and working method | |
| CN110030861A (en) | A kind of Novel flue gas waste heat recycle method | |
| CN101699038A (en) | Sintering ore cooling waste gas full combustion-supporting generating set | |
| CN205372496U (en) | High -efficient waste heat recovery uses multipurposely system |
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: 20111228 Termination date: 20130602 |