CN208518720U - CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system - Google Patents
CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system Download PDFInfo
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- CN208518720U CN208518720U CN201820639212.8U CN201820639212U CN208518720U CN 208518720 U CN208518720 U CN 208518720U CN 201820639212 U CN201820639212 U CN 201820639212U CN 208518720 U CN208518720 U CN 208518720U
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- engine
- natural gas
- rankine cycle
- organic rankine
- internal combustion
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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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
- 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
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Abstract
The utility model relates to a kind of CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system, including CO2Organic rankine cycle system and combustion in IC engine natural gas system, it is characterized in that: the CO2Organic rankine cycle system is connect by evaporator and flue gas regenerator with combustion in IC engine natural gas system, the evaporator and flue gas heat-exchange unit are sequentially connected end to end with steam turbine, condenser, working medium pump, steam turbine is connect with generator, and internal combustion engine connects and composes two system coupled electricity-generation systems of afterheat of IC engine recycling by valve with flue gas regenerator and evaporator respectively.The utility model has the advantages that user, which can according to need, neatly voluntarily adjusts cold heat/Electricity Federation production, is produced from heat/Electricity Federation and is produced from cold/Electricity Federation, cold heat coproduction various functions.Using the high-temperature water and gas of the combustion of natural gas of recycling to the cycle fluid CO in organic rankine cycle system2It heats and driving steam turbine drives electrical power generators, reduce cost of electricity-generating, realize energy-saving.
Description
Technical field
The utility model belongs to the energy and power technology field more particularly to a kind of CO2Organic Rankine Cycle and internal combustion engine
Burning natural gas coupled electricity-generation system.
Background technique
Distribution of Natural formula using energy source natural gas is fuel, and the ladder of the energy is realized by modes such as hot and cold, electric trilogy supplies
Grade utilizes, and comprehensive energy utilization efficiency realizes modern energy method of supplying 70% or more, and in load center nearby.At present I
State's Distribution of Natural formula energy development is still at an early stage, since China's natural gas price is higher, leads to Distribution of Natural formula
Energy cost of electricity-generating is 2-3 times of common coal fired power plant, and competitiveness is poor.Patent document 107131016A discloses a kind of super face
Boundary CO2Combine coal-fired thermal power generation system with Organic Rankine Cycle, which is characterized in that including supercritical CO2Brayton cycle system
System and subcritical organic rankine cycle system；Supercritical CO2Brayton Cycle system and subcritical organic rankine cycle system are logical
Preheater is crossed to be connected with evaporator；The supercritical CO2Brayton Cycle system is with supercritical CO2It is super to face as cycle fluid
Boundary CO2High-temperature region thermal energy is absorbed by coal-burning boiler, middle warm area heat is absorbed by the high temperature air preheater of coal-burning boiler back-end ductwork
Can, low-temperature space thermal energy is absorbed by the low temperature air preheater of coal-burning boiler back-end ductwork and is blown to heating boiler；It is described subcritical
For organic rankine cycle system using organic fluid as cycle fluid, organic fluid absorbs supercritical CO by preheater2Bretton follows
Low temperature heat energy in loop system, the organic fluid after heat absorption enter evaporator and flue gas heat exchange in boiler flue, organic fluid
It is further heated as saturated vapor or superheated steam.Patent document 107448324A disclose a kind of distributed energy device and
Technique.Process of the invention are as follows: combustion in IC engine natural gas power, for producing hot water, internal combustion engine itself also produces high-temperature flue gas
Raw high temperature jacket water, this part thermal water utilization lithium bromide chiller produces chilled water or supplying hot water user uses, to reach cold
The purpose of thermoelectricity trilogy supply.Patent document publication number 103161607A discloses a kind of joint hair utilized based on afterheat of IC engine
Electric system, it is characterised in that: including Brayton Cycle system and organic rankine cycle system, comprising: heater, combustion gas turbine,
Evaporator, cooler, organic working medium turbine；Engine exhaust gas first passes around heater, and heat is transmitted to Brayton cycle
CO2, form high temperature and pressure CO2Steam drives gas turbine power generation；Engine exhaust gas is by passing through steaming for heat again after heater
Hair device is transmitted to the organic working medium in Organic Rankine Cycle, forms the organic working medium steam of high temperature and pressure；The CO that combustion gas turbine comes out2
Heat is transmitted to the organic working medium in Organic Rankine Cycle through subcooler, forms the organic working medium steam of high temperature and pressure；Two strands
The organic working medium steam of high temperature and pressure drives organic working medium turbine power generation.
Utility model content
The utility model is in order to overcome the shortcomings in the prior art, to provide a kind of CO2Organic Rankine Cycle and internal combustion engine
Burning natural gas coupled electricity-generation system, it is fixed to organic rankine cycle system using the high-temperature water and gas of the combustion of natural gas of recycling
Cycle fluid CO2It heats and driving steam turbine drives electrical power generators, reduce cost of electricity-generating, realize energy-saving.
The utility model to achieve the above object, is achieved through the following technical solutions, a kind of CO2Organic Rankine Cycle with it is interior
Combustion engine burning natural gas coupled electricity-generation system, including CO2Organic rankine cycle system and combustion in IC engine natural gas system, it is special
Sign is: the CO2Organic rankine cycle system is connect by evaporator and flue gas regenerator with combustion in IC engine natural gas system,
The evaporator and flue gas heat-exchange unit are sequentially connected end to end with steam turbine, condenser, working medium pump, and steam turbine is connect with generator,
Internal combustion engine couples the CO for constituting afterheat of IC engine recycling by valve with flue gas regenerator and evaporator respectively2Organic Rankine Cycle
System and combustion in IC engine natural gas system coupled electricity-generation system.
The internal combustion engine of the combustion in IC engine natural gas system is connected with BrLi chiller by valve, and internal combustion engine produces
Raw high-temperature flue gas waste heat driving BrLi chiller generates chilled water.
Is connected with expansion tank in the circuit that the internal combustion engine is connect in circulation with evaporator, expansion tank by valve with
The connection of cooling water drainage water pipe；Internal combustion engine passes through jacket water regenerator and intercooler respectively and user connects and composes user's hot water
Circulation loop.
The internal combustion engine is connected with lubrication oil heat exchanger, and lubrication oil heat exchanger is equipped with the liquid being connected with fuel tank in internal combustion engine
Level sensor and oil level regulating valve, the oiling circuit of fuel tank is equipped with the expansion tank for adjusting oil pressure in internal combustion engine.
The utility model has the advantages that compared with prior art, the utility model copes with user can need neatly voluntarily according to user
It adjusts cold heat/Electricity Federation to produce, is produced from heat/Electricity Federation and is produced from cold/Electricity Federation, cold heat coproduction various functions.Utilize the combustion of natural gas of recycling
High-temperature water and the gas cycle fluid CO fixed to organic rankine cycle system2It heats and driving steam turbine drives generator hair
Electricity reduces cost of electricity-generating, realizes energy-saving.
Detailed description of the invention
Fig. 1 is the structure connection block diagram of the utility model.
In figure: 1- working medium pump, 2- evaporator, 3- flue gas regenerator, 4- steam turbine, 5- condenser, 6- generator, 7- internal combustion
Machine, 8- lubricate oil heat exchanger, 9- intercooler, 10- user, 11- cylinder sleeve water- to-water heat exchanger, 12- chimney, 13- silencer, 14-
BrLi chiller, 15- expansion tank, 16- expansion tank, 17- liquid level sensor, 18- valve, 19- oil regulating valve；a-
B-c---i, valve.
Specific embodiment
In conjunction with the preferred embodiment, to according to specific embodiment provided by the utility model, details are as follows:
It is detailed in attached drawing 1, present embodiment discloses a kind of CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation
System, including CO2Organic rankine cycle system and combustion in IC engine natural gas system, the CO2Organic rankine cycle system passes through
Evaporator 2 and flue gas regenerator 3 are connect with combustion in IC engine natural gas system, the evaporator and flue gas heat-exchange unit and steam turbine
4, condenser 5, working medium pump 1 are sequentially connected end to end, and steam turbine is connect with generator 6, internal combustion engine by valve 18 respectively with flue gas
Regenerator and evaporator connection constitute the CO of afterheat of IC engine recycling2Organic rankine cycle system and combustion in IC engine natural gas system
System coupled electricity-generation system.
The preferred embodiment of the present embodiment is that the internal combustion engine of the combustion in IC engine natural gas system is connected with bromine by valve
Change lithium refrigeration unit 14, the high-temperature flue gas waste heat driving BrLi chiller that internal combustion engine generates generates chilled water.
The preferred embodiment of the present embodiment is that the BrLi chiller and flue gas heat-exchange unit are connected with silencer in turn
13 and chimney 12, the flue gas that BrLi chiller and flue gas heat-exchange unit generate, which converges, enters chimney heel row by silencer
It is empty.
The preferred embodiment of the present embodiment is to state in the circuit that internal combustion engine is connect in circulation with evaporator to be connected with expansion tank
16, expansion tank is connect by valve with cooling water drainage water pipe；Internal combustion engine passes through jacket water regenerator and intercooler respectively
User's hot water circulation loop is connected and composed with user.
The preferred embodiment of the present embodiment is that the internal combustion engine is connected with lubrication oil heat exchanger 8, and lubrication oil heat exchanger is equipped with
The liquid level sensor 17 and oil level regulating valve 19 being connected with fuel tank in internal combustion engine, the oiling circuit of fuel tank, which is equipped with, in internal combustion engine adjusts
The expansion tank 15 of fuel-economizing pressure.
The course of work
It is detailed in attached drawing 1, two system coupled electricity-generation systems of the afterheat of IC engine recycling of composition, liquid CO2By working medium pump
It is sent in evaporator 2, absorbs the heat of vaporization of high temperature jacket water, become gas, then pass through flue gas heat-exchange unit and high temperature cigarette
Gas carries out heat exchange, becomes high-temperature gas, and driving steam turbine drives electrical power generators, and the working medium from steam turbine is in condenser
It condenses in 5, is sent in evaporator 2 by working medium pump again, so far complete a circulation.In Distribution of Natural subsystem,
For high-temperature flue gas branch, internal combustion engine 7 is by valve i connection refrigeration unit or is directly connected with flue gas regenerator 3, comes
The flue gas of flue gas and regenerator from refrigeration unit converges to be drained into chimney 12 by silencer 13.Valve i can be closed, and be made
Whole flue gases are obtained by flue gas regenerator, for producing high-grade electric energy.
High temperature jacket water a part from internal combustion engine 7 comes back to internal combustion engine 7 by evaporator 2, the cloth on this circuit
Expansion tank is set, 30% ethylene glycol is included.Cooling water drainage water pipe is connected with valve f by valve e.Another part jacket water warp
It crosses jacket water regenerator 11 and supplies hot water user, be then return in internal combustion engine, recycle.
The connection lubrication oil heat exchanger 8 of internal combustion engine 7, liquid level sensor 17 are connected with fuel tank in internal combustion engine, and monitoring oil level is simultaneously
Oil level regulating valve 19 is connected, volume read-out is controlled, oil pipe is connected with lubricating oil outlet.Expansion tank is provided on oiling circuit
15, adjust oil pressure.
The hot water that internal combustion engine generates supplies hot water user by intercooler 9, cooling water a part from intercooler
It comes back in internal combustion engine, another part enters the heat that lubrication oil heat exchanger 8 absorbs lubricating oil, is then return in intercooler 9
It discharges heat and supplies user.Cooling water drainage water pipe is arranged in this circuit, is connected by valve b with valve c, and is arranged in cylinder sleeve
Cooling water in water loop converges together by outside valve h discharge pipe.
A large amount of moisture can be generated along with burning using when gas motor, therefore is arranged in the optimum position of exhaust pipe and arranges
Water pipe, and hose is set in the position of exhaust pipe, to absorb the thermal expansion of exhaust pipe.1 in such as figure, one section of hose and internal combustion engine
It is connected, moisture then is discharged by valve a setting pipeline.
Its cyclic process is；Working medium pump 1 pushes CO2Into evaporator 2, the heating of flue gas regenerator 3 is again introduced into super
Critical state.The CO of supercriticality2Driven generator 6 generates electricity in turn for acting in steam turbine 4, the low pressure CO in steam turbine 42
It condenses by condenser 5, is sent in evaporator by working medium pump 1, so far complete a circulation.
Design principle
CO2Organic rankine cycle system is with CO2As working medium, CO is utilized2The advantages that chemical property is stable and density is high, has
Effect improves generating efficiency, and significantly reduces unit size.It is natural using combustion in IC engine that the system passes through evaporator for the first time
The waste heat of the high temperature jacket water of 85 degrees centigrades caused by gas is given using the waste heat of high-temperature flue gas for the second time as heat source
CO2Working medium heating.It is as much as possible to utilize CO2Low-grade waste heat is converted to high-grade electric energy by Organic Rankine Cycle, is improved
The cascade utilization efficiency of the energy.
The CO of afterheat of IC engine recycling2Organic rankine cycle system and combustion in IC engine natural gas system coupled electricity-generation system
It is located in the middle and high warm area of heat-driven, CO2The CO of organic rankine cycle system2Working medium absorbs combustion in IC engine in evaporator
Then middle warm area jacket water waste heat caused by natural gas absorbs caused by combustion in IC engine natural gas by flue gas regenerator
The waste heat of high-temperature flue gas makes CO2It heats up again in a supercritical state.
In CO2In organic rankine cycle system, with CO2As cycle fluid, CO2Fluid enters under the driving of working medium pump 1
The heat that evaporator 2 absorbs high temperature jacket water (85 DEG C ± 5 DEG C) becomes low temperature CO2Gas absorbs high temperature by flue gas regenerator 3
The heat of flue gas becomes high temperature CO2Gas, and then enter 4 driving steam turbine of steam turbine and generator 6 is driven to generate electricity.Gas enters cold
Condenser 5 condenses, and is sent in evaporator 2 again by working medium pump 1, so far completes a circulation.Height has been recycled in this circulation
The heat of warm jacket water and high-temperature flue gas produces high-grade electric energy.
NG Distributed Energy System includes internal combustion engine 7, generator 6, evaporator 2, flue gas regenerator 3, silencer 13,
Chimney 12, BrLi chiller 14, cylinder sleeve water- to-water heat exchanger 11, lubrication oil heat exchanger 8, heat exchanger 9, expansion tank 15-16, and
Series of valves 18.
Combustion in IC engine natural gas, generates high-temperature flue gas, and the waste heat of high-temperature flue gas can be used as BrLi chiller 14
Heat source, or can be completely used for by flue gas regenerator 3 heat CO2The high-grade electric energy of gas generation.Concrete condition
Using can be depending on the demand of customer charge.The high temperature jacket water that combustion in IC engine natural gas generates, is divided into two purposes,
Heat source of a part of jacket water as evaporator 2, branch road are provided with the expansion tank 16 containing 30% ethylene glycol, are used for
Equalizing main pressure, and prevent pipeline ice blockage in winter.Another part jacket water supplies hot water by cylinder sleeve water- to-water heat exchanger
User.High temperature grease in internal combustion engine supplies hot water user by lubrication oil heat exchanger 8.The hot water that internal combustion engine generates can lead to
It crosses intercooler 9 and supplies hot water user.
Tthe utility model system devises liquid level sensor 17, oily regulating valve 19 and expansion tank 15, the effect in this circuit
It is easy for giving internal combustion engine make-up oil, avoids the damage of the difficulty refueled and internal combustion engine.Using when gas motor along with combustion
Burning can generate a large amount of moisture, therefore drainpipe be arranged in the optimum position of exhaust pipe, and soft in the setting of the position of exhaust pipe
Pipe, to absorb the thermal expansion of exhaust pipe.Connecting valve b, valve c, valve e, valve f, valve h simultaneously, setting cooling water drain
Pipeline, the water in discharge line, can also clean pipeline, easy to repair.
Above-mentioned reference embodiment is to a kind of CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system into
Capable detailed description is illustrative without being restrictive, and can enumerate several embodiments according to limited range, therefore
All changes and modifications without departing from the scope of the present general inventive concept should belong within the protection scope of the utility model.
Claims (4)
1. a kind of CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system, including CO2Organic Rankine Cycle system
System and combustion in IC engine natural gas system, it is characterized in that: the CO2Organic rankine cycle system passes through evaporator and flue gas backheat
Device is connect with combustion in IC engine natural gas system, and the evaporator and flue gas heat-exchange unit and steam turbine, condenser, working medium pump are successively
Head and the tail connect, and steam turbine is connect with generator, and internal combustion engine is coupled with flue gas regenerator and evaporator in composition respectively by valve
The CO of combustion engine waste heat recycling2Organic rankine cycle system and combustion in IC engine natural gas system coupled electricity-generation system.
2. CO according to claim 12Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system, feature
Be: the internal combustion engine of the combustion in IC engine natural gas system is connected with BrLi chiller by valve, what internal combustion engine generated
High-temperature flue gas waste heat drives BrLi chiller to generate chilled water.
3. CO according to claim 12Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system, feature
It is: is connected with expansion tank in the circulation loop that the internal combustion engine is connect with evaporator, expansion tank passes through valve and cooling water
Drainpipe connection；Internal combustion engine passes through jacket water regenerator and intercooler respectively and user connects and composes user's hot water circuit and returns
Road.
4. CO according to claim 12Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system, feature
Be: the internal combustion engine is connected with lubrication oil heat exchanger, and lubrication oil heat exchanger is equipped with the liquid level being connected with fuel tank in internal combustion engine and passes
Sensor and oil level regulating valve, the oiling circuit of fuel tank is equipped with the expansion tank for adjusting oil pressure in internal combustion engine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820639212.8U CN208518720U (en) | 2018-05-02 | 2018-05-02 | CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820639212.8U CN208518720U (en) | 2018-05-02 | 2018-05-02 | CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412565A (en) * | 2018-05-02 | 2018-08-17 | 天津城建大学 | CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system |
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- 2018-05-02 CN CN201820639212.8U patent/CN208518720U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412565A (en) * | 2018-05-02 | 2018-08-17 | 天津城建大学 | CO2Organic Rankine Cycle and combustion in IC engine natural gas coupled electricity-generation system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 Termination date: 20210502 |
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| CF01 | Termination of patent right due to non-payment of annual fee |