CN106593691A - Heat and power cogeneration system - Google Patents
Heat and power cogeneration system Download PDFInfo
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- CN106593691A CN106593691A CN201611085848.4A CN201611085848A CN106593691A CN 106593691 A CN106593691 A CN 106593691A CN 201611085848 A CN201611085848 A CN 201611085848A CN 106593691 A CN106593691 A CN 106593691A
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- Prior art keywords
- gas
- combustion engine
- heat exchanger
- evaporimeter
- heat
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
- F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
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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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/065—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion taking place in an internal combustion piston engine, e.g. a diesel engine
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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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
-
- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D1/00—Steam central heating systems
- F24D1/02—Steam central heating systems operating with live steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2260/00—Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2262/00—Recuperating heat from exhaust gases of combustion engines and heat from lubrication circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to the technical field of heat and power cogeneration, and discloses a heat and power cogeneration system. The heat and power cogeneration system comprises a gas internal combustion engine and a cooling device which is used for radiating the gas internal combustion engine, and further comprises an organic Rankine cycle device, wherein the cooling device communicates with an evaporator in the organic Rankine cycle device and supplies heat to the evaporator. In the above embodiment, the gas internal combustion engine serves as a heat source engine and the gas internal combustion engine is radiated and cooled through the cooling device; the cooling device transmits heat which is absorbed from the gas internal combustion engine into the evaporator for use by the organic Rankine cycle device to generate power, so that the comprehensive utilization rate of gas heat and power cogeneration resources is improved.
Description
Technical field
The present invention relates to cogeneration of heat and power technical field, more particularly to a kind of co-generation unit.
Background technology
Gas turbine and gas internal-combustion engine are imitated as the relatively broad application in co-generation unit of heat source machine generating electricity
Rate aspect, gas internal-combustion engine is usually above gas turbine, and initial cost is relatively low, but, gas internal-combustion engine in the running, inside it
It is heated because the parts such as cylinder jacket, cylinder head, piston and valve are directly contacted with high-temperature fuel gas, mechanical temperature is very high, this
Parts intensity decreases are not only resulted in, but also very big thermal stress may be produced, damage parts；High temperature can also destroy cylinder
Lubricating oil film on wall, makes oil ageing go bad, so that piston, piston ring and cylinder jacket heavy wear, bite or adhere, because
This, in order to ensure that gas internal-combustion engine is normal, reliably operate, generally using cooling water to the cylinder sleeve in gas internal-combustion engine, lubrication
Oil cooling is but radiated, but jacket-cooling water and lubricating oil cooling water heat reclaim more difficult, have inevitably resulted in the wave of the energy
Take.
The content of the invention
The invention provides a kind of co-generation unit, using gas internal-combustion engine as heat source machine, and solves combustion gas
The recovery problem of combustion engine low temp waste heat, improves gas cogeneration comprehensive utilization rate of energy source.
The invention provides a kind of co-generation unit, the co-generation unit includes, gas internal-combustion engine and for giving
The cooling device of gas internal-combustion engine radiating, also including organic Rankine cycle devices, the cooling device is followed with the organic Rankine
Evaporimeter in loop device is connected and to the evaporimeter heat supply.
In above-described embodiment, gas internal-combustion engine is used as heat source machine, and it is cold to be radiated to gas internal-combustion engine by cooling device
But, the heat transfer absorbed from gas internal-combustion engine is used for organic Rankine cycle devices generation electricity in evaporimeter by cooling device
Can, improve the comprehensive utilization ratio of the gas cogeneration energy.
Preferably, also including First Heat Exchanger, the first heat exchanger tube and the second heat exchanger tube, institute are provided with the First Heat Exchanger
State the first heat exchanger tube and first circulation path is connected and formed with the cooling device, second heat exchanger tube connects with the evaporimeter
Lead to and formed second circulation path, also include the terminal temperature difference being arranged in parallel with the evaporimeter.Terminal temperature difference is with evaporimeter simultaneously
Connection is arranged, and this causes the heat that cooling device absorbs from gas internal-combustion engine except being supplied to evaporimeter for organic Rankine bottoming cycle
Outside device generates electricity, terminal temperature difference is also provided to, for meeting the heating demand of terminal temperature difference.
Preferably, the two ends of first heat exchanger tube have been respectively communicated with knockout and the first liquid trap, wherein, described point of liquid
Device is provided with first outlet and second outlet, and the first outlet is connected with the evaporimeter, the second outlet and the end
End subscriber is connected；First liquid trap is provided with the first import and the second import, and first import connects with the evaporimeter
Logical, second import is connected with the terminal temperature difference.Knockout can adjust the heat for being supplied to evaporimeter and terminal temperature difference
Value, so as to need to realize heat reasonable distribution therebetween according to different.
Preferably, the cooling device include for the first cooler of the cylinder sleeve radiating in the gas internal-combustion engine with
And the second cooler for radiating to the lubricating oil in the gas internal-combustion engine, and first cooler is cold with described second
But device is connected in series by pipeline.First cooler and the second cooler are on the one hand to cylinder sleeve, the lubricating oil in gas internal-combustion engine
Cooling, ensures the normal work of gas internal-combustion engine, on the other hand will inhale from the cylinder sleeve and lubricating oil of gas internal-combustion engine
The heat transfer of receipts is used to generate electricity or heat supply in First Heat Exchanger, and the low temperature exhaust heat for solving gas internal-combustion engine reclaims problem,
The energy is saved.
Preferably, the organic Rankine cycle devices also include decompressor, condenser and the first working medium circulating pump, its
In, the evaporimeter is connected by pipeline with the decompressor, and the decompressor is connected by pipeline with the condenser, described
Condenser is connected by pipeline with first working medium circulating pump, and first working medium circulating pump is by pipeline and the evaporimeter
Connection, and it is also associated with generator on the decompressor.
Preferably, the organic Rankine cycle devices also include the regenerator that draws gas, and the regenerator that draws gas is located at described cold
On pipeline between condenser and first working medium circulating pump, and the regenerator that draws gas also is connected with the decompressor.Draw gas
Regenerator is preheated to the organic working medium into evaporimeter so that organic working medium in evaporimeter can fast vaporizing for steam
Vapour, in next circulation decompressor acting is promoted, and improves efficiency of fuel cell generation.
Preferably, second working medium circulating pump that be additionally provided between regenerator and the condenser that draws gas.Second working medium is followed
Ring pump accelerates the cycle rate of organic working medium, so as to improve efficiency of fuel cell generation.
Preferably, also including flue gas waste heat recovery apparatus, the flue gas waste heat recovery apparatus include and the combustion gas internal combustion
The waste heat boiler of machine connection, the waste heat boiler is connected with steam turbine and formed by admission passage and the first return line respectively
Also it is communicated with peripheral passage, and the steam turbine for the second heat exchanger of the terminal temperature difference heat supply, described second to change
Hot device is connected by the second return line with the waste heat boiler.Waste heat boiler is made using high-temperature flue gas to the water heating in boiler
Steam turns to steam and is used to generate electricity in steam turbine, wherein, extracted steam from turbine or back pressure steam discharge are used to meet terminal temperature difference
Heating demand.
Preferably, the waste heat boiler is also communicated with the second liquid trap, first return line and second backflow
Pipeline is connected respectively by second liquid trap with the waste heat boiler.
Preferably, also including gas-distributing cylinder, the gas-distributing cylinder is located at and enters vapour between the waste heat boiler and the steam turbine
On pipeline, and the gas-distributing cylinder is also connected with second heat exchanger.When terminal temperature difference heating demand is larger, in waste heat boiler
A part of steam can be directly entered in the second heat exchanger by gas-distributing cylinder is used for heat supply.
Description of the drawings
Fig. 1 is the structural representation of co-generation unit provided in an embodiment of the present invention.
Reference：
1- gas internal-combustion engines 2- the first cooler 3- the second cooler 4- evaporimeters
5- First Heat Exchangers 51- the first heat exchanger tube the second heat exchanger tubes of 52-
6- terminal temperature difference 7- knockouts 8- the first liquid trap 9- decompressor 10- condensers
11- the first working medium circulating pump 12- draw gas regenerator 13- the second working medium circulating pump 14- waste heat boilers
15- steam turbines 16- the second heat exchanger 17- the second liquid trap 18- gas-distributing cylinders
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made into one below in conjunction with the accompanying drawings
Step is described in detail, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.
Based on the embodiment in the present invention, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made
Other embodiment, belongs to the scope of protection of the invention.
Embodiments provide a kind of co-generation unit, the co-generation unit includes, gas internal-combustion engine and
For the cooling device radiated to gas internal-combustion engine, also including organic Rankine cycle devices, cooling device and organic Rankine bottoming cycle
Evaporimeter in device connects and gives evaporimeter heat supply.
In above-described embodiment, gas internal-combustion engine is used as heat source machine, and it is cold to be radiated to gas internal-combustion engine by cooling device
But, cooling device connects and is formed peripheral passage by pipeline with the evaporimeter in organic Rankine cycle devices, and cooling device will
The heat transfer absorbed from gas internal-combustion engine is used for organic Rankine cycle devices in evaporimeter and produces electric energy, improves combustion gas
The comprehensive utilization ratio of the cogeneration of heat and power energy.
The structure and operation principle of the co-generation unit for facilitate understanding of the present embodiment of the invention providing, with reference to
Accompanying drawing is described in detail to it.
With reference to Fig. 1, co-generation unit provided in an embodiment of the present invention includes, gas internal-combustion engine 1, cooling device, organic
Rankine cycle devices and flue gas waste heat recovery apparatus.
Wherein, cooling device is used to give the cooling of gas internal-combustion engine 1, gas internal-combustion engine 1 in running, inside it due to
The parts such as cylinder jacket, cylinder head, piston and valve are directly contacted with high-temperature fuel gas and are heated, and mechanical temperature is very high, and this is not only
Parts intensity decreases can be caused, but also very big thermal stress may be produced, damage parts；High temperature can be also destroyed on cylinder wall
Lubricating oil film, make oil ageing go bad, so that piston, piston ring and cylinder jacket heavy wear, biting or adhering.In order to protect
Card gas internal-combustion engine 1 is normal, reliable operating, and in a preferred version, cooling device is included in gas internal-combustion engine 1
Cylinder sleeve radiating the first cooler 2 and the second cooler 3 for radiating to lubricating oil, and the first cooler 2 is cold with second
But it is connected in series by pipeline between device 3.
In addition, cooling device connects and gives the heat supply of evaporimeter 4, cooling dress with the evaporimeter 4 in organic Rankine cycle devices
Putting the heat transfer that will be absorbed from gas internal-combustion engine 1 is used for organic Rankine cycle devices generation electric energy in evaporimeter 4, solves
The low temperature exhaust heat of gas internal-combustion engine 1 reclaims problem.In concrete connection, the co-generation unit also includes First Heat Exchanger 5,
First Heat Exchanger 5 is located between cooling device and evaporimeter 4, and the first heat exchanger tube 51 and the second heat exchange are provided with First Heat Exchanger 5
Pipe 52, the first heat exchanger tube 51 is connected with cooling device and forms first circulation path, specifically, one end of the first heat exchanger tube 51 with
First cooler 2 is connected, and the other end is connected with the second cooler 3, and the first heat exchanger tube 51 and the first cooler 2 and second are cooled down
It is interconnected to form first circulation path between device 3；Second heat exchanger tube 52 connects and is formed second circulation path with evaporimeter 4,
Also include the terminal temperature difference 6 being arranged in parallel with evaporimeter 4,6 and second heat exchanger tube of terminal temperature difference 52 forms the 3rd peripheral passage, the
There is heat exchange and will be from gas internal-combustion engine 1 by cooling device in First Heat Exchanger 5 in one heat exchanger tube 51 and the second heat exchanger tube 52
The heat of middle absorption is used for organic Rankine cycle devices and produces electric energy or the heating demand for meeting terminal temperature difference 6.
In order to realize the reasonable distribution of the heat in second circulation path and the 3rd peripheral passage under different operating modes,
In one preferred version, one end of the second heat exchanger tube 52 is communicated with knockout 7, wherein, knockout 7 is provided with first outlet and
Two outlets, first outlet is connected with evaporimeter 4, and second outlet is connected with terminal temperature difference 6；Accordingly, the second heat exchanger tube 52 is another
One end is additionally provided with the first liquid trap 8, and the first liquid trap 8 is provided with the first import and the second import, and the first import connects with evaporimeter 4
Logical, the second import is connected with terminal temperature difference 6.The heat that cooling device absorbs from gas internal-combustion engine 1 passes through first circulation path
In being delivered to the first heat exchanger tube 51, there is heat exchange in the first heat exchanger tube 51 and the second heat exchanger tube 52 in First Heat Exchanger 5, and
By the shunting action of knockout 7, a portion heat passes to organic Rankine cycle devices and uses by second circulation path
In generating, a part of heat is supplied to terminal temperature difference 6 for meeting the heating demand of terminal temperature difference 6 by the 3rd peripheral passage,
Under heating operating mode, the heat that cooling device absorbs from gas internal-combustion engine 1 is mainly used in meeting the heat supply of terminal temperature difference 6 and bears
Lotus, organic Rankine cycle devices then generate electricity according to the heating demand feature of terminal temperature difference 6 in the work of load valley section；In non-heating
Under operating mode, the heat that cooling device absorbs from gas internal-combustion engine 1 is then all supplied to organic Rankine cycle devices for generating electricity.
Organic Rankine cycle devices also include decompressor 9, condenser 10, the first working medium circulating pump in addition to evaporimeter 4
11, specifically, evaporimeter 4 is connected by pipeline with decompressor 9, and decompressor 9 is connected by pipeline with condenser 10, condenser 10
Connect with the first working medium circulating pump 11, the first working medium circulating pump 11 connects to form organic Rankine bottoming cycle by pipeline with evaporimeter 4
Generator is also associated with path, and decompressor 9.Flowing in organic Rankine bottoming cycle path has lower boiling organic working medium, such as different
Butane, normal butane etc., organic working medium is absorbed heat in evaporimeter 4 and is vaporized and generates the steam with certain pressure and temperature, organic
The steam of working medium does work so as to drive electrical power generators into decompressor 9, and the exhaust steam discharged by decompressor 9 is entered in condenser 10
Again liquid is cooled to, and evaporimeter 4 is returned to by the first working medium circulating pump 11, complete a circulation.In a preferred version
In, the regenerator 12 that draws gas, and the regenerator 12 that draws gas are additionally provided with the pipeline between the working medium circulating pump 11 of condenser 10 and first
Connect with decompressor 9, in order to accelerate the cycle rate of organic working medium, to draw gas and be additionally provided with second between regenerator 12 and condenser 10
Working medium circulating pump 13.After the steam of organic working medium does work in decompressor 9, the exhaust steam discharged by decompressor 9 is partly into takes out
In vapour regenerator 12, another part liquefies again into the heat release of condenser 10, the working medium circulation of organic working medium Jing second after liquefaction
Pump 13 is entered and drawn gas in regenerator 12, and converges generation heat exchange with the exhaust steam drawn gas in regenerator 12 so that from backheat of drawing gas
The liquid of the organic working medium with uniform temperature is flowed out in device 12, this partially liq is entered by the first working medium circulating pump 11 and evaporated
The heat absorption and fast vaporizing is steam in evaporimeter 4, promotes decompressor 9 to do work in next circulation after device 4, improves product
Electrical efficiency.
Gas internal-combustion engine 1 produces 500 DEG C or so of high-temperature flue gas, the co-generation unit while electric power is produced, also
The heat energy in this part high-temperature flue gas is converted into into electric energy or confession for meeting terminal temperature difference 6 using flue gas waste heat recovery apparatus
Thermic load.Specifically, the flue gas waste heat recovery apparatus include the waste heat boiler 14 connected with gas internal-combustion engine 1, waste heat boiler 14
Peripheral passage, the production electric power mistake of gas internal-combustion engine 1 are connected and formed with steam turbine 15 by admission passage and the first return line
The high-temperature flue gas produced in journey make water vapor change into the water vapour of HTHP in waste heat boiler 14, and water vapour is by entering vapour
Pipeline enters steam turbine 15 and pushing turbine 15 is rotated so as to drive electrical power generators, and the exhaust steam discharged by steam turbine 15 is condensed
The return lines of Jing first are returned in waste heat boiler 14 after liquefaction, complete one cycle.It is communicated with steam turbine 15 for end
Second heat exchanger 16 of the heat supply of user 6, the second heat exchanger 16 is connected by the second return line with waste heat boiler 14, steam turbine 15
Draw gas or back pressure steam discharge enters in the second heat exchanger 16 and heat exchange occurs between terminal temperature difference 6, by the second backflow after heat release
Pipeline is returned in waste heat boiler 14 and completes one cycle.
In a preferred version, waste heat boiler 14 is also communicated with the second liquid trap 17, the first return line and second time
Flow tube road is connected respectively by the second liquid trap 17 with waste heat boiler 14, the steam inlet pipe between waste heat boiler 14 and steam turbine 15
Gas-distributing cylinder 18 is additionally provided with road, and gas-distributing cylinder 18 is also connected with the second heat exchanger 16, is born in the heat supply of heating operating mode lower end user 6
When lotus is larger, a part of steam that waste heat boiler 14 is produced is directly used in by the heat supply for meeting terminal temperature difference 6 by gas-distributing cylinder 18
Load, and according to the heating demand feature of terminal temperature difference 6, make steam turbine 15 generate electricity in the work of load valley section；In non-heating operating mode
Under, the steam that waste heat boiler 14 is produced is mainly used in steam turbine 15 and generates electricity.
By above description as can be seen that the co-generation unit provided in the embodiment of the present invention adopts gas internal-combustion engine 1
Used as heat source machine, and it is cold to be radiated to the cylinder sleeve in gas internal-combustion engine 1, lubricating oil by the first cooler 2 and the second cooler 3
But, the heat part that First Heat Exchanger 5 absorbs the first cooler 2 and the second cooler 3 from gas internal-combustion engine 1 is for full
The heating demand of sufficient terminal temperature difference 6, another part is used for organic Rankine cycle devices and produces electric energy, and real by knockout 7
Heat reasonable distribution is therebetween showed, the low temperature exhaust heat for solving gas internal-combustion engine 1 reclaims problem；In addition, the thermoelectricity
Heat energy in the high-temperature flue gas that co-generation system is also produced gas internal-combustion engine 1 by flue gas waste heat recovery apparatus be converted into electric energy or
For meeting the heating demand of terminal temperature difference 6, the comprehensive utilization ratio of the energy is improve.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. a kind of co-generation unit, it is characterised in that include, gas internal-combustion engine and cold for what is radiated to gas internal-combustion engine
But device, also including organic Rankine cycle devices, the cooling device connects with the evaporimeter in the organic Rankine cycle devices
Lead to and to the evaporimeter heat supply.
2. co-generation unit as claimed in claim 1, it is characterised in that also including First Heat Exchanger, first heat exchange
The first heat exchanger tube and the second heat exchanger tube are provided with device, first heat exchanger tube connects and formed first circulation with the cooling device
Path, second heat exchanger tube is connected with the evaporimeter and forms second circulation path, is also included in parallel with the evaporimeter
The terminal temperature difference of setting.
3. co-generation unit as claimed in claim 2, it is characterised in that the two ends of second heat exchanger tube have been respectively communicated with
Knockout and the first liquid trap, wherein, the knockout is provided with first outlet and second outlet, the first outlet with it is described
Evaporimeter is connected, and the second outlet is connected with the terminal temperature difference；First liquid trap is provided with the first import and second
Import, first import is connected with the evaporimeter, and second import is connected with the terminal temperature difference.
4. co-generation unit as claimed in claim 2, it is characterised in that the cooling device is included for the combustion gas
The first cooler and for radiating to the lubricating oil in the gas internal-combustion engine second that cylinder sleeve in internal combustion engine radiates is cold
But device, and first cooler and second cooler are connected in series by pipeline.
5. co-generation unit as claimed in claim 2, it is characterised in that the organic Rankine cycle devices also include expansion
Machine, condenser and the first working medium circulating pump, wherein, the evaporimeter is connected by pipeline with the decompressor, the expansion
Machine is connected by pipeline with the condenser, and the condenser is connected by pipeline with first working medium circulating pump, and described
One working medium circulating pump is connected by pipeline with the evaporimeter, and is also associated with generator on the decompressor.
6. co-generation unit as claimed in claim 5, it is characterised in that the organic Rankine cycle devices also include drawing gas
Regenerator, the regenerator that draws gas described is taken out on pipeline between the condenser and first working medium circulating pump
Vapour regenerator is connected by pipeline with the decompressor.
7. co-generation unit as claimed in claim 6, it is characterised in that described to draw gas between regenerator and the condenser
It is additionally provided with the second working medium circulating pump.
8. the co-generation unit as described in claim 2～7, it is characterised in that described also including flue gas waste heat recovery apparatus
Flue gas waste heat recovery apparatus include the waste heat boiler connected with the gas internal-combustion engine, and the waste heat boiler passes through respectively steam inlet pipe
Road and the first return line are connected with steam turbine and formed and be also communicated with peripheral passage, and the steam turbine for the end
Second heat exchanger of end subscriber heating, second heat exchanger is connected by the second return line with the waste heat boiler.
9. co-generation unit as claimed in claim 8, it is characterised in that the waste heat boiler is also communicated with the second liquid collecting
Device, first return line and second return line are connected respectively by second liquid trap with the waste heat boiler
It is logical.
10. co-generation unit as claimed in claim 9, it is characterised in that also including gas-distributing cylinder, the gas-distributing cylinder is located at institute
State on the admission passage between waste heat boiler and the steam turbine, and the gas-distributing cylinder is also connected with second heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085848.4A CN106593691A (en) | 2016-11-30 | 2016-11-30 | Heat and power cogeneration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085848.4A CN106593691A (en) | 2016-11-30 | 2016-11-30 | Heat and power cogeneration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106593691A true CN106593691A (en) | 2017-04-26 |
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| CN201611085848.4A Pending CN106593691A (en) | 2016-11-30 | 2016-11-30 | Heat and power cogeneration system |
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| CN112963246A (en) * | 2021-03-26 | 2021-06-15 | 华能江阴燃机热电有限责任公司 | Gas cogeneration system |
| CN114033508A (en) * | 2021-10-27 | 2022-02-11 | 北京清云智慧科技发展有限公司 | Energy storage type cogeneration system and control method |
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Application publication date: 20170426 |