CN202521950U - Device for improving efficiency of thermal cycle of thermal power plant or nuclear power plant - Google Patents
Device for improving efficiency of thermal cycle of thermal power plant or nuclear power plant Download PDFInfo
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- CN202521950U CN202521950U CN2012201594963U CN201220159496U CN202521950U CN 202521950 U CN202521950 U CN 202521950U CN 2012201594963 U CN2012201594963 U CN 2012201594963U CN 201220159496 U CN201220159496 U CN 201220159496U CN 202521950 U CN202521950 U CN 202521950U
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Abstract
The utility model discloses a device for improving an efficiency of thermal cycle of a thermal power plant or a nuclear power plant. The device comprises a steam condenser, an evaporator, a generator, an absorber, a condenser, wherein the steam condenser is connected with the evaporator through a refrigerant water-circulating pump and a pipeline; the evaporator is connected with the generator through a jet pump and a pipeline; the generator is connected with the absorber through the pipeline; the absorber is connected with the jet pump through an absorption circulating pump and a pipeline; the steam condenser is connected with the condenser through a condensation circulating water pump and a pipeline; and one end of a pipeline at one side of the condenser is connected with the evaporator through the pipeline while the other end of the pipeline is connected with the generator through a pipeline. The device for improving the efficiency of thermal cycle of the thermal power plant or the nuclear power plant, disclosed by the utility model, has the advantages of lowering operating cost, increasing efficiency of thermal cycle and being free from noise and heat pollution to the environment.
Description
Technical field
The utility model relates to a kind of device that is used for steam power plant or nuclear power plant's raising efficiency of thermal cycle.
Background technology
Current steam power plant or nuclear power plant generally circulate, improve steam parameter, adopt resuperheat to circulate, adopt duplexing matter combined cycle, these five aspects of implementation cogeneration of heat and power to consider from employing feedwater backheat in order to improve efficiency of thermal cycle.
Adopt the circulation of feedwater backheat: the steam of the acting of will in steam turbine, expanding, under a certain suitable parameters, from steam turbine, extract a part out, and heat the feedwater of being sent to boiler with this part steam.Compare with pure condensation cycle; Row gives the thermal loss of low-temperature receiver smaller in the backheat circulation, because the heat energy of that part of steam of from steam turbine, releasing is used to heated feed water fully, no longer constitutes cold source energy; Get into the corresponding minimizing of heat of condenser, thereby improve efficiency of thermal cycle.To the steam-turbine plant of different steam inlet conditions, the best backheat amount (often representing with optimum feed temperature) of drawing gas is arranged respectively all.The drawing gas normally of heated feed water repeatedly extracted out on steam turbine different pressures point and will feed water step by step and heat.Like this, with the feedwater of heating lower temperature earlier of drawing gas of lower temperature, this part draws gas just can do a little merits more in steam turbine, thereby further improves the thermal efficiency of device.In theory, the progression of feedwater backheat is many more, and the device thermal efficiency also just improves many more.But too much backheat progression can increase the equipment investment expense.
The circulation of employing resuperheat: (temperature and pressure all decreases the steam of the acting of will having expanded at the high-pressure section (normally in the high pressure cylinder) of steam turbine; Its pressure generally main vapour pressure 18～22%) from steam turbine, all draw; Deliver to heating (generally being heated to the temperature of the same level of initial steam) once more in the reheater of boiler; And then draw in the back-steam turbine (being generally the admission end of intermediate pressure cylinder), continue the acting of expanding.Adopt resuperheat to play and improve the same effect of throttle (steam) temperature, can reduce the humidity of steam discharge again, further improve initial steam pressure under the situation of metal material restriction possibility is provided thereby receive for raising in throttle (steam) temperature.The steam turbine power plant of modern big capacity high parameter all adopts the resuperheat circulation.But too much the resuperheat of number of times can make the structural configuration of steam turbine power plant and the method for operation too complicated.
At present, steam power plant or nuclear power plant have brought into use absorption heat pump and condenser through transport device to improve efficiency of thermal cycle, and the principle of this device is that the contrary Carnot cycle with the Rankine cycle of power plant or nuclear power plant's steam and heat pump combines.But; Also there are following shortcoming in existing absorption heat pump and condenser through transport device: the one, and it must rely on cooling tower to support its Lang Ken circulation and be able to proceed; Cause water resource and energy waste (even utilize the heat energy in the recirculated cooling water once more simultaneously; A large amount of heat-energy losses is also arranged in air), operating cost is high; The 2nd, it just partly is coupled together the evaporimeter of condenser and heat pump, and the heat energy that from exhaust steam, obtains occupies few part, and efficiency of thermal cycle is lower, and obtained be used for heating, economic benefit is not good enough.
The utility model content
The utility model technical problem to be solved is, a kind of reduction operating cost is provided, and further improves efficiency of thermal cycle, can reach the device that efficiency of thermal cycle improves in steam power plant or nuclear power plant that is used for of better effects of energy saving and emission reduction.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of device that is used for steam power plant or nuclear power plant's raising efficiency of thermal cycle; Comprise condenser, evaporimeter, generator, absorber, condenser; It is characterized in that: said condenser links to each other with evaporimeter through chilled water circulating pump and pipeline; Said evaporimeter links to each other with generator through jet pump and pipeline; Said generator links to each other with absorber through pipeline, and said absorber links to each other with jet pump through absorbent recirculation pump and pipeline, and said condenser links to each other with condenser through condense water circulating pump and pipeline; One end of one lateral line of said condenser links to each other with evaporimeter through pipeline, and the other end links to each other with generator through pipeline.
Further, the heat recipient fluid side of said absorber links to each other with user's end or cooling device through circulating pump and pipeline.
Further, the heat recipient fluid side of said absorber links to each other with condensate line through circulating pump and pipeline.
The utility model adopts heat pump mode to make that heat energy is able to recycle in the low-temperature heat source, and this is because the heat pump Energy Efficiency Ratio can reach more than 200%, especially under the low-temperature heat source temperature condition with higher, can obtain bigger value.And exhaust steam is a superheated steam, is a highly stable thermal source, though just a little more than the low-grade energy of environment temperature, it has, and latent heat is capable of using greatly, adds its part sensible heat, and contain its inside has the huge energy.
Compared with prior art, the utlity model has following advantage:
(1) evaporimeter of condenser and heat pump is coupled fully; Can realize that the exhaust steam heat is used all sidedly; Wherein most heat shifts the water that condenses and then produced to exhaust steam after shifting to condenser again; Get into the steam generator of nuclear power plant or the boiler of steam power plant again after making it to rise to higher temperature, to reduce the Coal-fired capacity of boiler, the heat of few part provides to the user's end or the cooling device that need heat through absorber interior heat interchanger.
(2) need not to be provided with cooling tower, but conserve water resource and the consumption that reduces electric energy, thus reducing production costs, noiselessness pollutes and thermal pollution.
(3) through introducing jet pump; After the heat of the chilled water that the cold-producing medium absorption is come by the exhaust steam switching is able to evaporation; Be absorbed liquid to absorption heat together and bring generator into, that is to say that jet pump is also conducting heat simultaneously in mass transport process, import in the generator together absorb heat; And these liquid just in time are in critical generation state in generator, only need in the boiler blow-off device or steam turbine is extracted a small amount of high-temperature steam out and just can be taken place.
(4) electric energy that in this process, is consumed is considerably less, even also lack than the electric energy that is consumed in the existing generating thermodynamic cycle process, and as the steam of thermodynamic-driven, is to have done merit waste gas that release or the boiler blow-off process in the steam turbine afterwards.
(5) can effectively solve large-scale condensing-type power plant steam turbine exhaust steam residual heat and efficiently utilize problem, effect is remarkable.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Embodiment 1
With reference to accompanying drawing; Present embodiment comprises condenser 1, evaporimeter 2, generator 5, absorber 4, condenser 3; Said condenser 1 links to each other with evaporimeter 2 through chilled water circulating pump 7 and pipeline, and said evaporimeter 2 links to each other with generator 5 through jet pump 10 and pipeline, and said generator 5 links to each other with absorber 4 through pipeline; Said absorber 4 links to each other with jet pump 10 through absorbent recirculation pump 8 and pipeline; Said condenser 1 links to each other with condenser 3 through condense water circulating pump 6 and pipeline, and an end of a lateral line of said condenser 3 links to each other with evaporimeter 2 through pipeline, and the other end links to each other with generator 5 through pipeline.
The heat recipient fluid side of said absorber 4 links to each other with the user is terminal through circulating pump 9 and pipeline, certainly, also can link to each other with cooling device.
Operation principle: will flow into from the exhaust steam that steam turbine comes out in the condenser 1; Carry out exchange heat with the chilled water in the condenser 1; The chilled water that obtains heat pumps into cooling in the evaporimeter 2 by chilled water circulating pump 7, and the exhaust steam of the cooling that is condensed pumps in the condenser 3 by the water circulating pump 6 that condenses, and condenser 3 in acquisition heat and heating up; Condensate after the intensification flows into the pressurization that heats up in the boiler of steam generator or steam power plant of nuclear power plant by pipeline, realize the Lang Ken circulation; To flow into from the high-temperature steam that boiler blow-off or bleeder steam are come out in the generator 5; In order to that higher a part of spike section heat of the temperature that helps generation still not enough in the offset generator 5; Make the cold-producing medium in the generator 5 interior duplexing matter refrigerant solutions be able to take place; The refrigerant vapour that has taken place is by condenser 3 condensations, and heat is discharged to the condensate that is about to get into boiler or steam generator, and condensed cold-producing medium gets into the heat that absorbs the chilled water that is come by the exhaust steam switching in the evaporimeter 2 and evaporates; And, accomplish the circulation of cold-producing medium by absorbent recirculation pump 8 and jet pump 10 entering generators 5; The concentrated absorption solution that is produced after taking place is passed through pipeline inflow absorber 4, and reenter generator 5 with refrigerant vapour, accomplish the circulation of absorption liquid by absorbent recirculation pump 8 and jet pump 10; Heat recipient fluid in the absorber 4 moves to user's end to the heat in the absorber 4 by circulating pump 9 and pipeline, certainly, also can be cooling device.
Embodiment 2
Present embodiment is with the difference of embodiment 1: the heat recipient fluid side of said absorber 4 links to each other with condensate line through circulating pump 9 and pipeline.
Operation principle:
Be with the difference of the operation principle of embodiment 1: the heat recipient fluids in the said absorber 4 use condensate, obtain in the absorber in the boiler of the steam generator that flows into nuclear power plant behind the heat or steam power plant.
In sum; The utility model will be against card if circulation and Lang Ken circulation very organically combine; Improve the comprehensive utilization of energy rate to make full use of the absorption cycling hot; Reach the purpose that very desirable thermodynamic cycle utilizes, can make existing calorific efficiency of heat power station, can be country's annual saving number with hundred million tons coal resources from about 45% levels brought up to 65% or more.
Claims (3)
1. one kind is used for the device that efficiency of thermal cycle improves in steam power plant or nuclear power plant; Comprise condenser, evaporimeter, generator, absorber, condenser; It is characterized in that: said condenser links to each other with evaporimeter through chilled water circulating pump and pipeline, and said evaporimeter links to each other with generator through jet pump and pipeline, and said generator links to each other with absorber through pipeline; Said absorber links to each other with jet pump through absorbent recirculation pump and pipeline; Said condenser links to each other with condenser through condense water circulating pump and pipeline, and an end of a lateral line of said condenser links to each other with evaporimeter through pipeline, and the other end links to each other with generator through pipeline.
2. the device that is used for steam power plant or nuclear power plant's raising efficiency of thermal cycle according to claim 1, it is characterized in that: the heat recipient fluid side of said absorber links to each other with user's end or cooling device through circulating pump and pipeline.
3. the device that is used for steam power plant or nuclear power plant's raising efficiency of thermal cycle according to claim 1, it is characterized in that: the heat recipient fluid side of said absorber links to each other with condensate line through circulating pump and pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201594963U CN202521950U (en) | 2012-04-16 | 2012-04-16 | Device for improving efficiency of thermal cycle of thermal power plant or nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201594963U CN202521950U (en) | 2012-04-16 | 2012-04-16 | Device for improving efficiency of thermal cycle of thermal power plant or nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202521950U true CN202521950U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201594963U Expired - Fee Related CN202521950U (en) | 2012-04-16 | 2012-04-16 | Device for improving efficiency of thermal cycle of thermal power plant or nuclear power plant |
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| Country | Link |
|---|---|
| CN (1) | CN202521950U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620478A (en) * | 2012-04-16 | 2012-08-01 | 刘小江 | Method and device for improving thermal circulation efficiency |
| CN108625915A (en) * | 2018-04-27 | 2018-10-09 | 山西大学 | It is a kind of using boiler blowdown water and flue gas as the organic rankine cycle system of heat source |
-
2012
- 2012-04-16 CN CN2012201594963U patent/CN202521950U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620478A (en) * | 2012-04-16 | 2012-08-01 | 刘小江 | Method and device for improving thermal circulation efficiency |
| CN108625915A (en) * | 2018-04-27 | 2018-10-09 | 山西大学 | It is a kind of using boiler blowdown water and flue gas as the organic rankine cycle system of heat source |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150416 |
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| EXPY | Termination of patent right or utility model |