CN101832595A - Heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat - Google Patents
Heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat Download PDFInfo
- Publication number
- CN101832595A CN101832595A CN 201010173487 CN201010173487A CN101832595A CN 101832595 A CN101832595 A CN 101832595A CN 201010173487 CN201010173487 CN 201010173487 CN 201010173487 A CN201010173487 A CN 201010173487A CN 101832595 A CN101832595 A CN 101832595A
- Authority
- CN
- China
- Prior art keywords
- heat
- pump
- water
- condenser
- heat exchanger
- 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.)
- Pending
Links
Images
Classifications
-
- Y02B30/123—
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to a heating plant for supplying heat for a heat-engine plant by recovering exhaust steam and vaporizing latent heat for solving the question of dead steam heat supply for an air cooling machine unit of the heat-engine plant. The invention has the following technical proposal: a condenser branch is led out from the middle part of a dead steam pipeline, a plurality of heat supply units are arranged on a cooling circulating water loop of the condenser, each heat supply unit comprises a heat exchanger, a heat exchanger circulating water pump, a heat pump machine unit and a heat supply user terminal; the condenser cooling circulating water passes through the exchanger, the cooling circulating water pump and the condenser to form a cooling water closed loop; the heat exchanger circulating water passes through a heat pump machine unit heat absorption side, the heat exchanger circulating water pump and the heat exchanger to form a heat exchange water closed loop; heat user circulating water passes through a heat pump machine unit heat release side, the heat supply user terminal and the heat supply circulating pump to form a hot water supply closed loop. In the invention, exhaust steam of a steam turbine is recover and latent heat is vaporized to supply heat in combination with the heat pump, so that work-doing steam is not consumed, heat supply temperature can be adjusted according to needs at the user terminal; in addition, the heating plant features flexible application, obvious energy conservation effect and improved machine unit efficiency.
Description
Technical field
The present invention relates to a kind of energy-conservation heat supply process, especially thermal power plant's Air-cooled Unit reclaims the steam discharge latent heat of vaporization in conjunction with the energy-conservation heating plant of source pump, belongs to the heating technical field.
Background technology
Thermal power generation is for guaranteeing that working medium need have a cold junction device that plays the low-temperature receiver effect in the condensing equipment heat that presses decided at the higher level but not officially announced.The cold junction device generally is made up of with the cooling system that can in time take away the exhaust latent heat of condensation the condensing equipment of level pressure heat release under vacuum state.According to cooling system cooling medium difference, the condensing equipment cooling means mainly contains clammy and air cooling at present.Clammy heat-economy is relatively good, but the condensing equipment water consumption is big, accounts for 42.8%～79.5% of power plant's total water consumption, and this will become a very serious problem for the power plant that is positioned at the water-deficient area.Air cooling utilizes air directly or indirectly to cool off turbine discharge, and Air-cooled Unit to slowing down worldwide water shortage, plays very important effect because its significant water-saving effect is generally adopted with rich coal water-deficient area especially by countries in the world.It is clammy that but the cooling capacity of air cooling is lower than, the power consumption height, and Air-cooled Unit operation back pressure vary within wide limits, low difficult utilization of the exhaust steam pressure of generation directly is discharged to exhaust steam in the atmosphere usually, and both contaminated environment wasted energy again.At this problem, the insider has done a large amount of research and trial, is used for civilian heating as the Air-cooled Unit exhaust steam is reclaimed, and this plays positive impetus to Air-cooled Unit exhaust steam utilization undoubtedly.But the problem that exists is: the exhaust steam delivery temperature is about 45 ℃ under the general thermal power plant nominal situation in winter, it obviously is not enough directly heating heating water with it, the temperature raising of exhaust steam must being pressurizeed, and the pressurization temperature raising certainly will change cold unit operation operating mode, and thermal power plant's normal power generation is impacted.
Summary of the invention
The present invention is used to overcome the defective of prior art and a kind of normal operating condition of thermal power plant's Air-cooled Unit that do not change is provided, and utilizes heat pump techniques to reclaim the heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat of exhaust steam heat supply.
The alleged problem of the present invention is solved by following technical scheme:
A kind of heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat, its special feature is: it comprises steam turbine, the air cooling island, the exhaust steam pipeline, condenser, the cool cycles water pump, vavuum pump and drain tank, described exhaust steam pipeline connection steam turbine and air cooling island, the condenser branch road is drawn at described exhaust steam pipeline middle part, described condenser is positioned on this branch road, in the water loop of condenser cool cycles, be provided with a plurality of heat supplies unit, each heat supply unit comprises heat exchanger, the heat exchanger water circulating pump, source pump, heat supply circulating pump and heat supply user end, the condenser cooling circulating water is through heat exchanger, the cool cycles water pump, condenser forms the cooling water closed cycle; Heat exchanger recirculated water forms the closed cycle of heat exchange water through source pump heat absorbing side, heat exchanger water circulating pump, heat exchanger; Hot user's recirculated water constitutes the closed cycle of heat supply water through source pump heat release side, heat supply user end, heat supply circulating pump.
Above-mentioned heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat, described condenser branch road arrival end is provided with vacuum butterfly valve, and the condenser branch road port of export connects drain tank.
Above-mentioned heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat, described vavuum pump is communicated with condenser, and described heat exchanger is a plate type heat exchanger.
Above-mentioned heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat is characterized in that: be respectively equipped with control valve on the cool cycles water inlet of described plate type heat exchanger and the cooling circulating water exit.
The present invention is directed to the Air-cooled Unit exhaust steam of existing firepower factory and fail effectively to utilize problem to improve, the steam discharge latent heat of vaporization that this device reclaims steam turbine does not consume acting steam in conjunction with heat pump heat supply, and energy-saving effect is remarkable.Main feature compared with prior art of the present invention is as follows: 1. reclaim the exhaust steam process and do not change the normal exhaust steam operating mode of Air-cooled Unit, thereby effectively utilizing the exhaust steam energy can not impact thermal power plant's normal power generation simultaneously; 2. what carry is water at low temperature, therefore carries thermal losses to be far smaller than its same class methods; 3. can adjust rational heat supply temperature as required at user side, the scope of application is wide, applying flexible; 4. plate type heat exchanger increases the recirculated water temperature difference, thereby reduces the energy consumption of water circulating pump greatly; 5. water circulating pump adopts the 0.6MPa of power plant draw gas driving, energy-saving and environmental protection more.Through measuring and calculating, carry out the latent heat of vaporization with a 600MW Air-cooled Unit and reclaim heat supply, the about 400MW of its available energy, can satisfy 1,000 ten thousand square metres heating station heating, with common central heating contrast, in heat supply in winter 4 months, can save 290,000 tons in mark coal, also can save air cooling island power consumption, improve unit efficiency, realize good economic benefits and social benefit.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Each label implication is as follows among the figure: 1. steam turbine, 2. the exhaust steam pipeline, 3. the condenser branch road, 4. vacuum butterfly valve, 5. condenser, 6. the air cooling island, 7. the cool cycles water pump, 8., 9. control valve, 10. heat exchanger, 11. source pump, 11-1. source pump heat absorbing side, 11-2. source pump heat release side, 12. heat supply user ends, 13. heat supply circulating pumps, 14. heat exchanger water circulating pumps, 15. drain tanks, 16. vavuum pumps.
The specific embodiment
Improvement main points of the present invention are that the exhaust steam of steam turbine is drawn, the low-quality steam discharge latent heat of vaporization that reclaims is converted to the heat of higher quality through source pump, offer the heat supply user end, be implemented in and do not consume acting steam, do not influence on the basis of Air-cooled Unit operating condition, utilize the purpose of the energy-conservation heat supply of Air-cooled Unit exhaust steam.
Referring to Fig. 1, apparatus of the present invention comprise steam turbine 1, air cooling island 6, exhaust steam pipeline 2 and the drain tank 15 of thermal power plant's Air-cooled Unit, and the condenser of setting up 5, cool cycles water pump 7, vavuum pump 16.Condenser 5 is arranged on by drawing on the condenser branch road 3 on the exhaust steam pipeline 2.In the water loop of condenser cool cycles, be provided with a plurality of heat supplies unit, each heat supply unit is according to hot user's temperature requirements difference, design dissimilar heat pump parameters, each heat supply unit comprises heat exchanger 10, heat exchanger water circulating pump 14, source pump 11, heat supply circulating pump 13 and heat supply user end 12.Wherein, the condenser cooling circulating water forms the cooling water closed cycle through cool cycles water lines, cool cycles water pump 7, the condenser 5 of heat exchanger 10 inside; The heat exchanger circulating water line of heat exchanger recirculated water through source pump heat absorbing side 11-1, heat exchanger water circulating pump 14, heat exchanger 10 inside forms the closed cycle of heat exchange water; Hot user's recirculated water constitutes the closed cycle of heat supply water through source pump heat release side 11-2, heat supply user end 12, heat supply circulating pump 13.Described heat exchanger 10 is a plate type heat exchanger, in each heat supply unit heat exchanger is set, the one, can widen the temperature difference of cooling water closed cycle as required, and reduce the power consumption of cool cycles water pump 7; The 2nd, source pump has certain requirement to the temperature that promotes, and regulates temperature by plate type heat exchanger, can realize that heat pump moves under most economical operating mode.
Still referring to Fig. 1, the arrival end of condenser branch road 3 is provided with vacuum butterfly valve 4, and the condenser branch road port of export connects drain tank 15, when not needing to extract Air-cooled Unit exhaust steam heat supply, cuts off condenser branch road 3 by vacuum butterfly valve 4 and gets final product.Described device also is provided with the vavuum pump 16 that is communicated with condenser, in order to extract the gaseous impurity in the condenser.
Still referring to Fig. 1, below in conjunction with described device running example the course of work of the present invention is described in detail: the 600MW Air-cooled Unit, the exhaust steam temperature is about 45 ℃ under the winter nominal situation, adopt vacuum butterfly valve 4 that condenser branch road 3 is introduced in exhaust steam, exhaust steam is heated to about 40 ℃ by condenser 5 with cooling circulating water.In the cooling water closed cycle, about 40 ℃ cooling circulating water enters the cool cycles water lines heat exchange of heat exchanger 10 inside, enter about 20 ℃ of the temperature of cool cycles water pump 7 through the cooling circulating water of heat exchanger heat exchange, because of widening the temperature difference of cooling water closed cycle, so can reduce the power consumption of cool cycles water pump 7; In the closed cycle of heat exchange water, heat exchanger recirculated water about 35 ℃ of outlet temperature after the heat exchanger circulating water line heat exchange of heat exchanger 10 inside enters source pump heat absorbing side 11-1 then, extract heat after temperature reduce about 20 ℃; In the closed cycle of heat supply water, source pump heat release side 11-2 emits heat, according to user's request (floor heating or common hot-water heating) hot user's recirculated water is promoted to 45-70 ℃, pumping into the heat supply user end by heat supply circulating pump 13 is user's heat supply, and it is 30-60 ℃ that heat supply user brings out water.Cool cycles water pump 7 adopts the 0.6MPa of power plant draw gas driving, energy-saving and environmental protection more.The condensate water of condenser 5 enters condensate-scavenging installation through drain tank 15.Above-mentioned running utilizes the about 400MW of heat, can satisfy 1,000 ten thousand square metres heating station heating, with central heating contrast, in heat supply in winter 4 months, can save 290,000 tons in mark coal, also can save air cooling island power consumption, improves unit efficiency.
Claims (4)
1. heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat, it is characterized in that: it comprises steam turbine (1), air cooling island (6), exhaust steam pipeline (2), condenser (5), cool cycles water pump (7), vavuum pump (16) and drain tank (15), described exhaust steam pipeline connection steam turbine and air cooling island, condenser branch road (3) is drawn at described exhaust steam pipeline middle part, described condenser (5) is positioned on this branch road, in the water loop of condenser cool cycles, be provided with a plurality of heat supplies unit, each heat supply unit comprises heat exchanger (10), heat exchanger water circulating pump (14), source pump (11), heat supply circulating pump (13) and heat supply user end (12), the condenser cooling circulating water is through heat exchanger (10), cool cycles water pump (7), condenser (5) forms the cooling water closed cycle; Heat exchanger recirculated water forms the closed cycle of heat exchange water through source pump heat absorbing side (11-1), heat exchanger water circulating pump (14), heat exchanger (10); Hot user's recirculated water constitutes the closed cycle of heat supply water through source pump heat release side (11-2), heat supply user end (12), heat supply circulating pump (13).
2. heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat according to claim 1 is characterized in that: described condenser branch road (3) arrival end is provided with vacuum butterfly valve (4), and the condenser branch road port of export connects drain tank (15).
3. heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat according to claim 2 is characterized in that: described vavuum pump (16) is communicated with condenser, and described heat exchanger (10) is a plate type heat exchanger.
4. according to claim 1 or 2 or 3 described heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat, it is characterized in that: be respectively equipped with control valve (8,9) on the cool cycles water inlet of described plate type heat exchanger and the cooling circulating water exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010173487 CN101832595A (en) | 2010-05-14 | 2010-05-14 | Heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010173487 CN101832595A (en) | 2010-05-14 | 2010-05-14 | Heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101832595A true CN101832595A (en) | 2010-09-15 |
Family
ID=42716754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010173487 Pending CN101832595A (en) | 2010-05-14 | 2010-05-14 | Heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101832595A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141347A (en) * | 2011-04-29 | 2011-08-03 | 山西省电力公司电力科学研究院 | Parallel peak evaporative condenser |
| CN102192660A (en) * | 2011-04-29 | 2011-09-21 | 山西省电力公司电力科学研究院 | Heat radiating module for evaporative condenser for steam exhaust purpose of steam turbine |
| CN102392702A (en) * | 2011-07-20 | 2012-03-28 | 李德军 | Fully-closed circulating water system for recovering latent heat of condensing generation units by utilizing air cooler |
| CN102486317A (en) * | 2010-12-06 | 2012-06-06 | 张宏伟 | Heat supplying method of cooling water residual heat recycling energy-saving system of thermal power plant |
| CN102818398A (en) * | 2012-07-25 | 2012-12-12 | 北京冶联科技有限公司 | Intelligent air cooling island and control method thereof |
| CN103148587A (en) * | 2013-02-16 | 2013-06-12 | 烟台清泉实业有限公司 | Method and device for preparing domestic hot water with waste heat of power plant |
| CN103335447A (en) * | 2013-07-04 | 2013-10-02 | 西安冠驰电子技术有限责任公司 | Constant heat load type condensation heat supply system |
| CN108626949A (en) * | 2018-05-08 | 2018-10-09 | 苏州南海道电子科技有限公司 | A kind of thermal power plant circulating cooling water energy-saving system |
| CN110441011A (en) * | 2019-07-30 | 2019-11-12 | 辽宁科技大学 | A kind of quick leakage inspection method of gas turbine air cooling system TCA cooler |
-
2010
- 2010-05-14 CN CN 201010173487 patent/CN101832595A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486317A (en) * | 2010-12-06 | 2012-06-06 | 张宏伟 | Heat supplying method of cooling water residual heat recycling energy-saving system of thermal power plant |
| CN102141347A (en) * | 2011-04-29 | 2011-08-03 | 山西省电力公司电力科学研究院 | Parallel peak evaporative condenser |
| CN102192660A (en) * | 2011-04-29 | 2011-09-21 | 山西省电力公司电力科学研究院 | Heat radiating module for evaporative condenser for steam exhaust purpose of steam turbine |
| CN102392702A (en) * | 2011-07-20 | 2012-03-28 | 李德军 | Fully-closed circulating water system for recovering latent heat of condensing generation units by utilizing air cooler |
| CN102392702B (en) * | 2011-07-20 | 2014-09-03 | 李德军 | Fully-closed circulating water system for recovering latent heat of condensing generation units by utilizing air cooler |
| CN102818398A (en) * | 2012-07-25 | 2012-12-12 | 北京冶联科技有限公司 | Intelligent air cooling island and control method thereof |
| CN102818398B (en) * | 2012-07-25 | 2015-01-07 | 北京冶联科技有限公司 | Intelligent air cooling island and control method thereof |
| CN103148587A (en) * | 2013-02-16 | 2013-06-12 | 烟台清泉实业有限公司 | Method and device for preparing domestic hot water with waste heat of power plant |
| CN103335447A (en) * | 2013-07-04 | 2013-10-02 | 西安冠驰电子技术有限责任公司 | Constant heat load type condensation heat supply system |
| CN108626949A (en) * | 2018-05-08 | 2018-10-09 | 苏州南海道电子科技有限公司 | A kind of thermal power plant circulating cooling water energy-saving system |
| CN110441011A (en) * | 2019-07-30 | 2019-11-12 | 辽宁科技大学 | A kind of quick leakage inspection method of gas turbine air cooling system TCA cooler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101832595A (en) | Heating plant for supplying heat for heat-engine plant by recovering exhaust steam and vaporizing latent heat | |
| CN201568088U (en) | Cogeneration system for directly recycling waste heat of exhaust steam from power station steam turbine with absorption type heat pump | |
| CN101832156A (en) | Condensation heat recovering and central heating supply system of power plant direct air cooling unit | |
| CN204255125U (en) | A kind of thermal power plant Direct Air-Cooled assists spike cooling system | |
| CN101793171A (en) | Combined heat and power system for directly recovering exhaust afterheat of power station steam turbine by absorption heat pump | |
| CN201265955Y (en) | High temperature water heating system by waste heat recovery | |
| CN108800275B (en) | Large-temperature-difference central heating system utilizing waste heat of power plant and working method | |
| CN203518324U (en) | Waste heat recovering system | |
| CN202023600U (en) | CHP (combined heat and power) heat supply system for efficiently recovering exhaust steam waste heat of power station steam turbine | |
| CN106765446A (en) | One kind is drawn gas combining heating system using cooling water heat Direct Air-Cooled high back pressure | |
| CN101793172A (en) | Combined heat and power device for directly recovering exhaust afterheat of power station steam turbine by absorption heat pump | |
| CN102182527A (en) | Heat power combined heat supply system for efficiently recycling residual heat exhausted by steam turbine in power station | |
| CN102997311B (en) | Power plant condensing heat recovery heat supply system | |
| CN201671669U (en) | Condensation heat recovering central heating system of direct air cooling unit for power plant | |
| CN206377728U (en) | One kind is drawn gas combining heating system using cooling water heat Direct Air-Cooled high back pressure | |
| CN201671665U (en) | Thermal power generation device utilizing heat pump for energy saving | |
| CN201740115U (en) | Heating device utilizing latent heat of recovered exhaust steam from air cooling machine set of heat power plant | |
| CN102331025B (en) | Steam-waste heat supply system for recycling condensation waste heat of main and auxiliary machines in thermal power plant | |
| CN201568085U (en) | Cogeneration device for directly recycling waste heat of exhaust steam from power station steam turbine with absorption type heat pump | |
| CN102384515B (en) | Absorption type refrigeration and heat exchange heat and power cogeneration heating system | |
| CN203068742U (en) | Condensation heat recovery system | |
| CN206094022U (en) | Heat energy efficient utilization system for recovering deaerator exhaust steam and heating fan heater simultaneously | |
| CN202182509U (en) | Combined heat and power heating system with absorbing type refrigeration and heat exchange | |
| CN202221120U (en) | Circulating water parallel-connection type heat supply system of thermal power plant | |
| CN205638583U (en) | Exhaust steam thermal utilization system of power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100915 |