CN105756730B - A kind of device and method for improving steam-electric power efficiency - Google Patents
A kind of device and method for improving steam-electric power efficiency Download PDFInfo
- Publication number
- CN105756730B CN105756730B CN201610275595.0A CN201610275595A CN105756730B CN 105756730 B CN105756730 B CN 105756730B CN 201610275595 A CN201610275595 A CN 201610275595A CN 105756730 B CN105756730 B CN 105756730B
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- steam
- compressor
- heat exchanger
- jet chimney
- compressed
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/26—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam
- F01K3/262—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam by means of heat exchangers
- F01K3/265—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam by means of heat exchangers using live steam for superheating or reheating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a kind of device and method for improving steam-electric power efficiency, it not only can improve steam-electric power efficiency with low-temp low-pressure steam, and cost is low, energy-conserving and environment-protective, and the application of afterheat steam can be made further to expand, solve the problem of low grade heat energy is utilized；The import of steam mixer is connected by jet chimney with afterheat steam source, and the outlet of steam mixer is connected by jet chimney with steam-turbine import, and the steam mixing mouth of steam mixer is exported by the compressed steam of jet chimney and compressor to be connected；The steam (vapor) outlet of steam turbine is connected by the low pressure steam inlet of jet chimney and heat exchanger, connected between steam turbine and generator by power transmission shaft, the low-pressure steam outlet of heat exchanger is connected by the low pressure steam inlet of jet chimney and compressor, the heating steam inlet of heat exchanger is exported by the compressed steam of jet chimney and compressor and connected, the lower bottom end of heat exchanger is provided with the condensation mouth of a river, and passes through pipeline and external connection.
Description
Technical field
The present invention relates to heat treatment and equipment technical field, specially a kind of device for improving steam-electric power efficiency and side
Method.
Background technology
In the industrial production, various kilns are used, substantial amounts of waste heat can be produced, these UTILIZATION OF VESIDUAL HEAT INs, which are got up, to be saved
Mass energy is saved, the best method of current UTILIZATION OF VESIDUAL HEAT IN is exactly to produce afterheat steam, can be with heating, vacuum smelting using afterheat steam
Refining, generate electricity etc., but the temperature, pressure of afterheat steam is than relatively low, the occasion using effect such as vacuum metling, generatings it is unstable, imitate
Rate is low, so as to be used in greatly in a small amount of heating, the applicable situation that this allows for low-temp low-pressure afterheat steam is very limited, low temperature
Low-pressure residual heat steam can not extensive use, substantial amounts of waste heat, which is just not used, to be wasted.
And in cogeneration, not only save, environmental protection is also helped, steam power generates electricity generally by steam engine
Steam thermal energy is converted into mechanical energy with the Steam Power Circulation of steam turbine, the state change process of its working medium is by rankine cycle
Carry out, and in order to improve the thermal efficiency of rankine cycle, it is necessary to improve the steam initial conditions into Steam Power Equipment, that is, improve
Primary steam pressure and temperature, so the initial conditions of the Steam Power Equipment of modern Large Copacity is all high temperature, height without any exception
Pressure, but high temperature, high steam are produced it is necessary to have high temperature heat source, it mainly could meet requirement using fuel combustion again
, and by fuel combustion, its fuel consumption is big, cost is higher, and with waste heat as thermal source generation afterheat steam,
At a fairly low by rankine cycle operating thermal efficiency, therefore, how effectively to be generated electricity using afterheat steam is that pendulum is great in face of us
Problem.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of device for improving steam-electric power efficiency, it can not only use low temperature
Low-pressure steam improves steam-electric power efficiency, and cost is low, energy-conserving and environment-protective, and the application of afterheat steam can be made further to expand
Greatly, the problem of low grade heat energy is utilized is solved, present invention also offers a kind of method for improving steam-electric power efficiency.
Its technical scheme is such：A kind of device for improving steam-electric power efficiency, it is characterised in that it includes steam and mixed
Clutch, steam turbine, generator, heat exchanger, compressor, the import of the steam mixer pass through jet chimney and afterheat steam
Source is connected, and the outlet of the steam mixer is connected by the jet chimney with the steam-turbine import, the steam
The steam mixing mouth of blender is connected by the jet chimney with the compressed steam outlet of the compressor；The steam turbine
Steam (vapor) outlet is connected by the jet chimney with the low pressure steam inlet of the heat exchanger, the steam turbine and generator it
Between connected by power transmission shaft, the low-pressure steam outlet of the heat exchanger passes through the low pressure of the jet chimney and the compressor
Steam inlet is connected, and the heating steam inlet of the heat exchanger passes through the jet chimney and the compressed steam of the compressor
Outlet connection, the lower bottom end of the heat exchanger is provided with the condensation mouth of a river, and passes through pipeline and external connection.
A kind of method for improving steam-electric power efficiency, it is characterised in that it comprises the following steps：
（1）, afterheat steam steam mixer and a part of compressed steam for being come out from compressor are entered by jet chimney
Mixing；
（2）, mixed steam enter steam turbine, the partial heat energy of mixed vapour is converted to machinery in the steam turbine
Can, drive electrical power generators；
（3）, made the mixed vapour of work(with relatively low flow velocity enter heat exchanger after, the mixed vapour with directly
A part of compressed steam come out from compressor entered passes through the heat exchanger tube progress indirect heat exchange of the heat exchanger, absorption
Heat, is compressed subsequently into the compressor, the steam increasing temperature and pressure after compression；Another portion come out from the compressor
Partial compression steam enters to be mixed with the afterheat steam again in the steam mixer, and the circulation work that repeats the above steps；
（4）, a part of compressed steam for coming out from the compressor, after the heat exchanger is entered, and from the vapour
The mixed vapour for having made work(in turbine carries out indirect heat exchange, releases a large amount of sensible heats and the latent heat of vaporization, and its last turns into coagulates
Bear water, and discharged from the mouth of a river is condensed.
The beneficial effects of the invention are as follows afterheat steam is mixed with a part of compressed steam that compressor comes out, its part heat
Mechanical energy can be converted in steam turbine, electrical power generators can be driven；Then make mixed vapour pressure and the temperature drop of work(,
And the compressed steam for entering heat exchanger with being come out from compressor carries out indirect heat exchange, one part vapor (steam) temperature low absorption heat
Amount, subsequently into compressor boost, pressure and temperature have all risen, and conversion efficiency of thermoelectric is greatly improved, and its is another
Some vapor temperature height releases heat, and due to releasing a large amount of sensible heats and the latent heat of vaporization, the steam ultimately becomes condensate discharge；With
And the steam entered in heat exchanger after compressor boost is partly into steam mixer and afterheat steam hybrid working, mixes
Steam afterwards continues the expansion working in steam turbine, and another part enters heat exchanger and the mixed vapour of temperature drop after work done
Indirect heat exchange is carried out, so as to be effectively utilized the compressed steam discharged from compressor, afterheat steam consumption is saved, and pass through
Conversion can use the steam of various grades, and substantial amounts of waste heat is fully used, so that the scope of application is expanded, energy-conservation effect
Fruit is substantially.
Brief description of the drawings
Fig. 1 is the process flow diagram of the present invention.
Embodiment
As shown in figure 1, the present invention it is a kind of improve steam-electric power efficiency device, it include steam mixer 1, steam turbine 2,
Generator 3, heat exchanger 4, compressor 5, steam mixer 1 are that afterheat steam is mixed with the Partial shrinkage steam that compressor 5 comes out
The mixing apparatus of conjunction；Steam turbine 2 is the equipment that heat energy is converted to mechanical energy；Heat exchanger tube, the inside and outside steam of pipe are provided with heat exchanger 4
Indirect heat exchange can be carried out；Compressor 5 is steam boosting equipment；The import of steam mixer 1 passes through jet chimney and waste heat
Vapour source is connected, and the outlet of steam mixer 1 is connected by jet chimney with the steam inlet of steam turbine 2, the steaming of steam mixer 1
Vapour mixing mouth is connected by jet chimney with the compressed steam outlet of compressor 5；The steam (vapor) outlet of steam turbine 2 passes through jet chimney
It is connected, is connected between steam turbine 2 and generator 3 by power transmission shaft with the low pressure steam inlet of heat exchanger 4, heat exchanger 4
Low-pressure steam outlet is connected by jet chimney with the low pressure steam inlet of compressor 5, and the heating steam inlet of heat exchanger 4 leads to
Cross jet chimney to be connected with the compressed steam outlet of compressor 5, the lower bottom end of heat exchanger 4 is provided with the condensation mouth of a river, and passes through
Pipeline and external connection.
A kind of method for improving steam-electric power efficiency, it comprises the following steps：
（1）, afterheat steam by jet chimney enter steam mixer 1 with from compressor 5 come out a part compression steam
Vapour is mixed；
（2）, mixed steam enter steam turbine 2, according to gas expansion work done principle, the mixed vapour in steam turbine 2
Partial heat energy be converted to mechanical energy, drive generator 3 to generate electricity；
（3）, made mixed vapour pressure and the temperature drop of work(, entered with relatively low flow velocity after heat exchanger 4, in heat friendship
In parallel operation 4, the heat exchange that mixed vapour and a part of compressed steam come out from compressor 5 being directly entered pass through heat exchanger 4
Pipe carries out indirect heat exchange, absorbs heat, is compressed subsequently into compressor 5, the steam increasing temperature and pressure after compression；From compression
Another part compressed steam that machine 5 comes out enters to be mixed with afterheat steam again in steam mixer 1, and is repeated the above steps and followed
Ring works, and is effectively utilized the compressed steam discharged from compressor 5, saves afterheat steam consumption；
（4）, from compressor 5 come out a part of compressed steam, enter heat exchanger 4 after, with from steam turbine 2 make
The mixed vapour of work(carries out indirect heat exchange, releases a large amount of sensible heats and the latent heat of vaporization, and it finally turns into condensate, and from condensate
Mouth discharge.
Claims (2)
1. a kind of device for improving steam-electric power efficiency, it is characterised in that it includes steam mixer, steam turbine, generator, heat
Exchanger, compressor, the import of the steam mixer are connected by jet chimney with afterheat steam source, the steam mixer
Outlet be connected by the jet chimney with the steam-turbine import, the steam mixing mouth of the steam mixer passes through
The jet chimney is connected with the compressed steam outlet of the compressor；The steam (vapor) outlet of the steam turbine passes through the steam pipe
Road is connected with the low pressure steam inlet of the heat exchanger, is connected between the steam turbine and generator by power transmission shaft, described
The low-pressure steam outlet of heat exchanger is connected by the jet chimney with the low pressure steam inlet of the compressor, and the heat is handed over
The heating steam inlet of parallel operation is connected by the jet chimney with the compressed steam outlet of the compressor, the heat exchanger
Lower bottom end be provided with the condensation mouth of a river, and pass through pipeline and external connection.
2. a kind of method for improving steam-electric power efficiency, it is characterised in that it comprises the following steps：
（1）, afterheat steam mixed by jet chimney into steam mixer with a part of compressed steam come out from compressor；
（2）, mixed steam enter steam turbine, the partial heat energy of mixed vapour is converted to mechanical energy in the steam turbine,
Drive electrical power generators；
（3）, made the mixed vapour of work(with relatively low flow velocity enter heat exchanger after, the mixed vapour is with being directly entered
A part of compressed steam come out from compressor pass through the heat exchanger tube of the heat exchanger and carry out indirect heat exchange, absorb heat
Amount, is compressed, the steam increasing temperature and pressure after compression subsequently into the compressor；The another part come out from the compressor
Compressed steam enters to be mixed with the afterheat steam again in the steam mixer, and the circulation work that repeats the above steps；
（4）, a part of compressed steam for coming out from the compressor, after the heat exchanger is entered, and from the steam turbine
The middle mixed vapour for having made work(carries out indirect heat exchange, releases a large amount of sensible heats and the latent heat of vaporization, it finally turns into condensate,
And discharged from the mouth of a river is condensed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275595.0A CN105756730B (en) | 2016-04-29 | 2016-04-29 | A kind of device and method for improving steam-electric power efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275595.0A CN105756730B (en) | 2016-04-29 | 2016-04-29 | A kind of device and method for improving steam-electric power efficiency |
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| CN105756730A CN105756730A (en) | 2016-07-13 |
| CN105756730B true CN105756730B (en) | 2017-09-05 |
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| CN201610275595.0A Active CN105756730B (en) | 2016-04-29 | 2016-04-29 | A kind of device and method for improving steam-electric power efficiency |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1123676B (en) * | 1961-05-23 | 1962-02-15 | Bernhard Polock Dipl Ing | Process for converting the heat released in nuclear reactors into mechanical energy with a steam-cooled reactor |
| DE19506186A1 (en) * | 1994-08-31 | 1996-03-07 | Feiler Christoph | Steam=powered machine system operating process |
| FR2981981B1 (en) * | 2011-10-28 | 2014-12-19 | Helios Energy Partners | METHOD OF CONVERTING MECHANICAL ENERGY OF THERMAL ENERGY, DEVICE USING THE SAME, AND DEVICE PARTICULARLY ADAPTABLE FOR THE IMPLEMENTATION OF SAID METHOD |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61116009A (en) * | 1984-11-12 | 1986-06-03 | Ishikawajima Harima Heavy Ind Co Ltd | Heat recovery system from incondensable waste gas in steam turbine |
-
2016
- 2016-04-29 CN CN201610275595.0A patent/CN105756730B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1123676B (en) * | 1961-05-23 | 1962-02-15 | Bernhard Polock Dipl Ing | Process for converting the heat released in nuclear reactors into mechanical energy with a steam-cooled reactor |
| DE19506186A1 (en) * | 1994-08-31 | 1996-03-07 | Feiler Christoph | Steam=powered machine system operating process |
| FR2981981B1 (en) * | 2011-10-28 | 2014-12-19 | Helios Energy Partners | METHOD OF CONVERTING MECHANICAL ENERGY OF THERMAL ENERGY, DEVICE USING THE SAME, AND DEVICE PARTICULARLY ADAPTABLE FOR THE IMPLEMENTATION OF SAID METHOD |
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| Publication number | Publication date |
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| CN105756730A (en) | 2016-07-13 |
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Address after: 214000 no.2020 Lihu Avenue, Binhu District, Wuxi City, Jiangsu Province Patentee after: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 214128, Wuxi, Jiangsu province Binhu District Taihu Street double new economic Park Patentee before: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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