CN108643981A - A kind of low-grade heat source driving non-azeotropic mixed working medium cogeneration system and method - Google Patents
A kind of low-grade heat source driving non-azeotropic mixed working medium cogeneration system and method Download PDFInfo
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- CN108643981A CN108643981A CN201810312352.9A CN201810312352A CN108643981A CN 108643981 A CN108643981 A CN 108643981A CN 201810312352 A CN201810312352 A CN 201810312352A CN 108643981 A CN108643981 A CN 108643981A
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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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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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
- 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
- F01K25/06—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 mixtures of different fluids
- F01K25/065—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 mixtures of different fluids with an absorption fluid remaining at least partly in the liquid state, e.g. water for ammonia
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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]
Abstract
The invention discloses a kind of low-grade heat source driving non-azeotropic mixed working medium cogeneration system and methods, low-grade heat source input channel is connect through superheater with steam generator, for heat to be transmitted to working medium side, two-way is divided in one end of steam generator through separator, all the way successively through superheater, one end of turbine and heater connects, turbine is coaxially connected with generator, drive generator for customer power supply into turbine expansion acting after superheated steam for forming saturated vapor after low-temperature heat source heats, another way is connected through one end of evaporator and heater successively, heater is connect with heat supply output channel, for providing saturated solution to the user heat after being mixed with turbine steam exhaust；The other end of heater connects to form working medium side circulation path by the other end of booster pump and steam generator.The present invention realizes the target for user while power supply and heat supply, and the thermal efficiency of cycle of cogeneration system is far above the thermal efficiency of cycle for the system for being only used for power supply.
Description
Technical field
The invention belongs to the efficient switch technology fields of low-grade heat source, and in particular to a kind of low-grade heat source driving non-azeotrope
Mixed working fluid cogeneration system and method.
Background technology
With the fast development of Chinese national economy, demand and consumption to the energy increasingly increase, extensive industrial activity
The low-grade heat sources such as the low temperature exhaust heat and solar energy of generation, geothermal energy due to recovery difficult is big, cost recovery is high etc. not having
Have and substantially effectively utilized, causes a large amount of energy waste.Low-grade heat source is efficiently converted to electric energy by sophistication
Or thermal energy is used to reducing energy consumption, Promote Sustainable Social Development is of great significance.
The therrmodynamic system of recycling low-grade heat source is broadly divided into three kinds at present：Water vapour power circulation system, organic Rankine
The circulatory system and the Kalina circulatory systems.When recycling low-grade heat source using water vapour power circulation system, due to water vapour
Critical-temperature is higher, and the heat recovery efficiency of system is relatively low.Some systems such as Organic Rankine Cycle is recycled relatively low using organic working medium
The low grade residual heat of temperature, but since organic working medium has the characteristics that expensive, easy leakage, containing toxicity, the economy of system
Performance is not high, and is detrimental to health and Environmental security.A small amount of system carries out low-grade heat source using non-azeotropic mixed working medium
It recycles, the endothermic temperature curve of this working medium and the exothermic temperature curve matching rate of heat source are good, and reduce cycle can not
Inverse loss, improves the thermal performance of system.The Kalina circulatory systems use this non-azeotropic mixed working medium of ammonium hydroxide, working medium price
Cheap to be easy to get, economic cost is relatively low, is paid close attention in recent years by numerous scholars.
Although the recycling of low-grade heat source may be implemented in existing heat recovery technology, but its thermal efficiency of cycle is non-
It is often low.The thermal efficiency of cycle of cogeneration system is far above the thermal efficiency of cycle of electricity generation system, current cogeneration system
The working fluid overwhelming majority is water vapour or organic working medium, both working medium are compared to non-azeotropic mixed working medium in low-grade heat source
Recycling field provides no advantage against.Non-azeotropic mixed working medium power circulation system has obtained a degree of research, but simultaneously
Non-azeotropic working medium is not utilized to be carried out at the same time the research of power generation and heat supply.Therefore this patent proposes a kind of low-grade heat source driving
Non-azeotropic mixed working medium cogeneration system and method.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of low-grade heat
Source drives non-azeotropic mixed working medium cogeneration system and method, has reached while having provided to the user electric energy and thermal energy, and significantly
The purpose of heat-source energy transfer efficiency is improved, it is further proposed that the compressor in original cogeneration system is substituted with injector,
It avoids compressor power consumption from improving thermal efficiency of cycle and achievees the purpose that while powering and heat supply.
The present invention uses following technical scheme：
A kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving, including steam generator, separator,
Superheater, turbine, evaporator, heater, booster pump, low-grade heat source input channel and heat supply output channel, low-grade heat source
Input channel is connect through superheater with steam generator, and for heat to be transmitted to working medium side, one end of steam generator is through separation
Device divides two-way, and one end connection through superheater, turbine and heater, turbine are coaxially connected with generator successively all the way, and being used for will
Saturated vapor is formed after low-temperature heat source heats after superheated steam drives generator for customer power supply into turbine expansion acting, separately
It is connected successively through one end of evaporator and heater all the way, heater is connect with heat supply output channel, for saturated solution to exist
Heat is provided to the user after being mixed with turbine steam exhaust；The other end of heater connects by the other end of booster pump and steam generator
It connects to form working medium side circulation path.
Specifically, be provided with first throttle valve between evaporator and heater, first throttle valve and turbine and heater
One end is connected in parallel.
Further, the other end of heater divides two-way, is connect all the way with booster pump, and another way passes through the second throttling successively
One end of valve and evaporator and compressor connects, the other end and first throttle valve and turbine of compressor and one end of heater
Parallel connection.
Further, compressor is coaxially connected with the second motor, and booster pump is coaxially connected with the first motor.
Specifically, being provided with first throttle valve between evaporator and heater, injection is provided between turbine and heater
One end of device, first throttle valve and injector and heater is connected in parallel.
Further, the other end of heater divides two-way, is connect all the way with booster pump, and another way passes through the second throttling successively
Valve and evaporator are connect with injector；Booster pump is coaxially connected with the first motor.
A kind of working method of the non-azeotropic mixed working medium cogeneration system of low-grade heat source driving, it is mixed using non-azeotrope
Object is closed as cycle fluid, the basic solution of cycle fluid absorbs low product in low-grade heat source input channel in a vapor generator
The heat of position heat source, forms two-phase mixture, the basic solution of cycle fluid is separated into saturated vapor subsequently into separator
And saturated solution；Saturated vapor enters turbine expansion acting driving power generation after forming high pressure superheated steam after low-temperature heat source heats
Machine is customer power supply, and saturated solution provides heat to the user after being mixed with turbine steam exhaust into heater.
Specifically, saturated vapor enters in superheater the heat for continuing to absorb low-grade heat source input channel, high pressure is formed
Superheated steam, into expansion work in turbine, driving generator exports electric energy；
Saturated solution mixes after evaporator and first throttle valve with turbine steam exhaust, forms the substantially molten of cycle fluid
The basic solution of mixed working fluid after liquid, the basic solution of cycle fluid and the compressor boosting heating of the second motor drive is mixed
It closes, liquid is condensed by the medium in heat supply output channel subsequently into heater, heat is discharged, provides the user with thermal energy；
The basic solution of liquid come out from heater is divided into two strands, and two-phase mixtures are formed after stock-traders' know-how second throttle decompression
Object enters back into evaporator and absorbs the heat of vaporization of saturated solution, the saturation basic solution of steam state is formed, then into compression
Boosting heating is carried out in machine；After booster pump of another strand of basic solution of liquid by the first motor drive improves pressure, enter
Continue the heat of absorption low-grade heat source input channel middle-low grade heat source in steam generator, completes cycle.
Specifically, saturated vapor enters in superheater the heat for continuing to absorb low-grade heat source input channel, high pressure is formed
Superheated steam, enters expansion work in turbine, and driving generator exports electric energy；Turbine steam exhaust, which enters, serves as work in injector
Fluid is used to improve the pressure of the basic solution of cycle fluid of evaporator cold side outlet；
Saturated solution mixes after evaporator and first throttle valve with injector steam discharge, forms the substantially molten of cycle fluid
Liquid, basic solution enters in heater is condensed into liquid by the medium in heat supply output channel, discharges heat, provides the user with heat
Energy；
The basic solution of liquid come out from heater is divided into two strands, and two-phase mixtures are formed after stock-traders' know-how second throttle decompression
Object enters back into evaporator and absorbs the heat of vaporization of saturated solution, the saturation basic solution of steam state is formed, then into injection
Boosting heating is carried out in device；Booster pump of another strand of basic solution of liquid Jing Guo the first motor drive improves pressure, into steaming
Continue the heat of absorption low-grade heat source input channel middle-low grade heat source in vapour generator, completes cycle.
Further, cycle fluid includes ammonia water mixture, the low-grade heat source packet in low-grade heat source input channel
Include industrial exhaust heat, underground heat and solar energy.
Compared with prior art, the present invention at least has the advantages that：
A kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving of the present invention, one end of steam generator
Divide two-way through separator, one end connection through superheater, turbine and heater successively, is used for saturated vapor through Low Temperature Thermal all the way
It is customer power supply to enter turbine expansion acting driving generator after the heating of source after formation overheat rich ammonia steam, and another way is successively through steaming
The one end for sending out device and heater connects, and heater is connect with heat supply output channel, for mixing saturated solution with turbine steam exhaust
Provide heat after conjunction to the user；The other end of heater connects to form working medium side by the other end of booster pump and steam generator
Circulation path, low-grade heat source input channel are connect by superheater with steam generator, for heat to be transmitted to working medium side, profit
It uses low grade residual heat as heat source, non-azeotropic mixed working medium cogeneration system is realized, using the endothermic temperature of non-azeotropic working medium
Curve and heat source exothermic temperature Curve Matching are good, reduce irreversible loss, improve cycle efficieny.
Further, it is provided with compressor between evaporator and heater, is working medium stream in heating cycle using compressor
Body pressurization heating.Compressor and first throttle valve and turbine are connected in parallel with heater, make full use of turbine in power cycles
The heat of steam discharge and evaporator outlet saturated solution carries out heat supply, improves the thermal efficiency of cogeneration cycle.
Further, it is provided with first throttle valve between evaporator and heater, spray is provided between turbine and heater
One end of emitter, first throttle valve and injector and heater is connected in parallel, and it is heating cycle to replace compressor using injector
Interior working fluid pressurization, avoids heating cycle compressor power consumption, thermal efficiency of cycle is further promoted.
The invention also discloses a kind of work sides of the non-azeotropic mixed working medium cogeneration system of low-grade heat source driving
Method, which is characterized in that using zeotrope as cycle fluid, the basic solution of cycle fluid is inhaled in a vapor generator
The heat of low-grade heat source input channel middle-low grade heat source is received, two-phase mixture is formed, subsequently into separator by circulation industrial
The basic solution of matter is separated into saturated vapor and saturated solution；Saturated vapor forms high pressure superheated steam after low-temperature heat source heats
It is customer power supply to enter turbine expansion acting driving generator afterwards, and saturated solution is into heater after being mixed with turbine steam exhaust
User provides heat.
Further, compressor is used then to send working medium for the cycle fluid pressurization of evaporator outlet in heating cycle
It is user's heat supply to enter heater, and system of realizing is powered simultaneously and the function of heat supply, improves system thermal efficiency.
Further, it using this mechanical device of injector, is promoted turbine steam discharge in power cycles as working fluid
The pressure of evaporator outlet working medium in driving fluid, that is, heating cycle consumes simultaneously in heating cycle electric energy zero, is reached for user
The purpose of power supply and heat supply, improves the thermal efficiency of cycle of cogeneration system.
Further, system circulation working medium includes ammonia water mixture, and this working medium is cheap and easy to get, and economic performance is good.System
The heat source of system includes industrial exhaust heat, underground heat and solar energy, in extensive range using heat source, has good market application prospect.
In conclusion the present invention realizes the target for user while power supply and heat supply, the cycling hot of cogeneration system
Efficiency is far above the thermal efficiency of cycle for the system for being only used for power supply.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Fig. 1 is a kind of connection diagram of present system；
Fig. 2 is another connection diagram of present system.
Wherein：1. steam generator；2. separator；3. superheater；4. turbine；5. generator；6. evaporator；7. first segment
Flow valve；8. compressor；9. the second motor；10. heater；11. second throttle；12. booster pump；13. the first motor；
14. low-grade heat source input channel；15. heat supply output channel；16. injector.
Specific implementation mode
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indicating or implies relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more this feature.In the description of the present invention,
Unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present invention provides a kind of non-azeotropic mixed working medium cogeneration systems of low-grade heat source driving, mainly by steam
The components such as generator, separator, turbine, generator, heater, booster pump, throttle valve are constituted, and the basic solution of ammonium hydroxide is sent out in steam
It is heated by low-temperature heat source in raw device, is then divided into two strands by separator, be saturated rich ammonia steam shape after low-temperature heat source heats
At overheat rich ammonia steam after enter turbine expansion acting driving generator be customer power supply, be saturated poor ammonia solution with turbine steam exhaust
After mixing heat is provided to the user into heater.
The present invention is based on the above cogeneration systems to propose a kind of improvement field cycling profile, avoids in heating cycle part
Compressor power consumption, further improve the thermal efficiency of cycle of cogeneration system.
A kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving of the present invention, including two kinds of connection sides
Formula, it is specific as follows：
Referring to Fig. 1, the outlet of steam generator 1 is connect with 2 entrance of separator, the outlet of separator 2 divides two-way, passes through all the way
Hot device 3 is connect with turbine 4, and turbine 4 is connected with generator 5；Another way is connect through evaporator 6 with first throttle valve 7,4 He of turbine
First throttle valve 7 is connect with 10 entrance of heater；
The outlet of heater 10 divides two-way, all the way successively through second throttle 11, evaporator 6 and compressor 8 and heater 10
Connection, compressor 8 are connect with the second motor 9；Another way is connect through booster pump 12 with steam generator 1, and booster pump 12 connects
There is the first motor 13, forms working medium side circulation path.
Heater 10 exports the required thermal energy of user by heat supply output channel 15, and low-grade heat source input channel 14 passes through
Superheater 3 is connect with steam generator 1, for heat to be transmitted to working medium side.
Booster pump 12 and the first motor 13 are coaxially connected；Turbine 4 and generator 5 are coaxially connected, compressor 8 and the second electricity
Motivation 9 is coaxially connected.
Second throttle 11 and booster pump 12 and the outlet of heater 10 are connected in parallel；Turbine 4, first throttle valve 7 and pressure
Contracting machine 8 and the entrance of heater 10 are connected in parallel.
Referring to Fig. 2, the outlet of steam generator 1 is connect with 2 entrance of separator, the outlet of separator 2 divides two-way, passes through all the way
Hot device 3, turbine 4 and injector 16 are connect with 10 entrance of heater, and turbine 4 is connected with generator 5；Another way is through evaporator 6,
One throttle valve 7 is connect with 10 entrance of heater；
The outlet of heater 10 divides two-way, passes through second throttle 11, evaporator 6, injector 16 and heater successively all the way
10 entrances connect；Another way is connect through booster pump 12 with steam generator 1, and booster pump 12 is connected with the first motor 13, is formed
Working medium side circulation path.
Heater 10 by heat supply output channel 15 export the required thermal energy of user, low-grade heat source input channel 14 according to
Secondary connection superheater 3 and steam generator 1, working medium side is transmitted to by heat.
Turbine 4 and generator 5 are coaxially connected, and booster pump 12 and the first motor 13 are coaxially connected.
Injector 16 is connected in parallel with first throttle valve 7 and heater 10, heater 9 and second throttle 11 and booster pump
12 parallel connections.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being described and shown in usually here in attached drawing is real
Applying the component of example can be arranged and be designed by a variety of different configurations.Therefore, the present invention to providing in the accompanying drawings below
The detailed description of embodiment be not intended to limit the range of claimed invention, but be merely representative of the selected of the present invention
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, using zeotrope as cycle fluid, such as typical ammonia water mixture, below with
It is illustrated for ammonia water mixture：
The basic solution of ammonia water mixture absorbs 14 middle-low grade of low-grade heat source input channel in steam generator 1
The heat of heat source forms two-phase mixture, and subsequently into separator 2, separator 2 detaches the basic solution of ammonia water mixture
At saturation rich ammonia steam and it is saturated poor ammonia solution.
Saturation rich ammonia steam enters the heat for continuing to absorb low-grade heat source input channel 14 in superheater 3, forms high pressure
Rich ammonia steam is overheated, into expansion work in turbine 4, driving generator 5 exports electric energy.
Poor ammonia solution is saturated after evaporator 6 and first throttle valve 7, is mixed with 4 steam exhaust of turbine, ammonium hydroxide is formed and mixes work
The basic solution of matter.
Ammonium hydroxide after the boosting heating of compressor 8 that the basic solution of ammonia water mixture drives with the second motor 9 mixes
The basic solution mixing of working medium is condensed into liquid, release heat subsequently into heater 10 by the medium in heat supply output channel 15
Amount, provides the user with thermal energy.
The water base solution of liquid ammonia come out from heater 10 is divided into two strands, is formed after a stock-traders' know-how second throttle 11 decompression
Two-phase mixture enters back into the heat of vaporization for being absorbed in evaporator 6 and being saturated poor ammonia solution, and it is substantially molten to form saturation steam state ammonium hydroxide
Liquid, then into carrying out boosting heating in compressor 8；
The water base solution of one other liquid ammonia come out from heater 10 passes through the booster pump that the first motor 13 drives
12, pressure is improved, into the heat for continuing 14 middle-low grade heat source of absorption low-grade heat source input channel in steam generator 1
Amount.In this way, in cycles.
Low-grade heat source in low-grade heat source input channel 14 can be industrial exhaust heat, underground heat and solar energy etc..
Referring to Fig. 2, specific implementation is as follows：
The basic solution of ammonia water mixture absorbs 13 middle-low grade of low-grade heat source input channel in steam generator 1
The heat of heat source forms two-phase mixture, and subsequently into separator 2, separator 2 divides the basic solution of ammonia water mixture
From at saturation rich ammonia steam and the poor ammonia solution of saturation.
Saturation rich ammonia steam enters the heat for continuing to absorb low-grade heat source input channel 13 in superheater 3, is formed high
Hot rich ammonia steam is pressed through, expansion work in turbine 4 is entered, driving generator 5 exports electric energy；Turbine steam exhaust enters injector 16
In serve as working fluid for improve 6 cold side outlet of evaporator the basic solution of ammonia water mixture pressure.
Poor ammonia solution is saturated after evaporator 6 and first throttle valve 7, is mixed with 16 steam discharge of injector, it is mixed to form ammonium hydroxide
The basic solution of working medium is closed, the basic solution of ammonia water mixture enters in heater 10 by the medium in heat supply output channel 15
It is condensed into liquid, heat is discharged, provides the user with thermal energy.
The water base solution of liquid ammonia come out from heater 10 is divided into two strands：
Two-phase mixture is formed after the decompression of one stock-traders' know-how second throttle 11, enters back into evaporator 6 and absorbs the poor ammonia of saturation
The heat of vaporization of solution forms the saturation basic solution of steam state ammonium hydroxide, then into carrying out boosting heating in injector 16；
The water base solution of one other liquid ammonia come out from heater 10 passes through the booster pump that the first motor 13 drives
12, pressure is improved, into the heat for continuing 14 middle-low grade heat source of absorption low-grade heat source input channel in steam generator 1
Amount, completes entire cyclic process.
The above content is merely illustrative of the invention's technical idea, and protection scope of the present invention cannot be limited with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical solution each falls within claims of the present invention
Protection domain within.
Claims (10)
1. a kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving, which is characterized in that including steam generation
Device (1), separator (2), superheater (3), turbine (4), evaporator (6), heater (10), booster pump (12), low-grade heat source
Input channel (14) and heat supply output channel (15), low-grade heat source input channel (14) is through superheater (3) and steam generator
(1) it connects, for heat to be transmitted to working medium side, one end of steam generator (1) is divided two-way through separator (2), passed through successively all the way
Superheater (3), turbine (4) are connect with one end of heater (10), and turbine (4) is coaxially connected with generator (5), for that will be saturated
Steam is formed after low-temperature heat source heats after superheated steam drives generator for customer power supply into turbine expansion acting, another way
It is connect successively with one end of heater (10) through evaporator (6), heater (10) is connect with heat supply output channel (15), and being used for will
Saturated solution provides heat to the user after being mixed with turbine steam exhaust；The other end of heater (10) is by booster pump (12) and steaming
The other end of vapour generator (1) connects to form working medium side circulation path.
2. a kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving according to claim 1, special
Sign is, be provided between evaporator (6) and heater (10) first throttle valve (7), first throttle valve (7) and turbine (4) with
One end of heater (10) is connected in parallel.
3. a kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving according to claim 2, special
Sign is that the other end of heater (10) divides two-way, is connect all the way with booster pump (12), and another way passes through second throttle successively
(11) it is connect with one end of compressor (8) with evaporator (6), the other end and first throttle valve (7) and turbine of compressor (8)
(4) it is connected in parallel with one end of heater (10).
4. a kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving according to claim 3, special
Sign is that compressor (8) is coaxially connected with the second motor (9), and booster pump (12) is coaxially connected with the first motor (13).
5. a kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving according to claim 1, special
Sign is, first throttle valve (7) is provided between evaporator (6) and heater (10), is set between turbine (4) and heater (10)
It is equipped with injector (16), first throttle valve (7) and injector (16) and one end of heater (10) is connected in parallel.
6. a kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving according to claim 5, special
Sign is that the other end of heater (10) divides two-way, is connect all the way with booster pump (12), and another way passes through second throttle successively
(11) it is connect with injector (16) with evaporator (6)；Booster pump (12) is coaxially connected with the first motor (13).
7. a kind of non-azeotropic mixed working medium cogeneration using the low-grade heat source driving of any one of claim 1 to 6
The working method of system, which is characterized in that using zeotrope as cycle fluid, the basic solution of cycle fluid is steaming
In vapour generator absorb low-grade heat source input channel middle-low grade heat source heat, formed two-phase mixture, subsequently into point
The basic solution of cycle fluid is separated into saturated vapor and saturated solution from device；Saturated vapor is formed after low-temperature heat source heats
It is customer power supply to enter turbine expansion acting driving generator after high pressure superheated steam, and saturated solution with turbine steam exhaust after mixing
Heat is provided to the user into heater.
8. a kind of work of the non-azeotropic mixed working medium cogeneration system of low-grade heat source driving according to claim 7
Method, which is characterized in that saturated vapor enters the heat for continuing to absorb low-grade heat source input channel (14) in superheater (3),
High pressure superheated steam is formed, into expansion work in turbine (4), driving generator (5) exports electric energy；
Saturated solution mixes with turbine (4) steam exhaust after evaporator (6) and first throttle valve, forms the basic of cycle fluid
The basic solution of mixed working fluid after solution, the basic solution of cycle fluid and the compressor boosting heating of the second motor drive is mixed
It closes, liquid is condensed by the medium in heat supply output channel (15) subsequently into heater (10), heat is discharged, is carried to user
For thermal energy；
The basic solution of liquid come out from heater (10) is divided into two strands, and two-phase mixtures are formed after stock-traders' know-how second throttle decompression
Object enters back into evaporator (6) and absorbs the heat of vaporization of saturated solution, forms the saturation basic solution of steam state, then into
Boosting heating is carried out in compressor；Booster pump (12) of another strand of basic solution of liquid Jing Guo the first motor drive improves pressure
Afterwards, it into the heat for continuing to absorb low-grade heat source input channel (14) middle-low grade heat source in steam generator (1), completes to follow
Ring.
9. a kind of work of the non-azeotropic mixed working medium cogeneration system of low-grade heat source driving according to claim 7
Method, which is characterized in that saturated vapor enters the heat for continuing to absorb low-grade heat source input channel (13) in superheater (3),
High pressure superheated steam is formed, expansion work in turbine (4) is entered, driving generator exports electric energy；Turbine steam exhaust enters injection
The pressure of cycle fluid basic solution of the working fluid for improving evaporator (6) cold side outlet is served as in device；
Saturated solution mixes after evaporator (6) and first throttle valve with injector steam discharge, forms the substantially molten of cycle fluid
Liquid, basic solution enters in heater (10) is condensed into liquid by the medium in heat supply output channel (15), heat is discharged, to use
Family provides thermal energy；
The basic solution of liquid come out from heater (10) is divided into two strands, and two-phase mixtures are formed after stock-traders' know-how second throttle decompression
Object enters back into evaporator (6) and absorbs the heat of vaporization of saturated solution, forms the saturation basic solution of steam state, then into
Injector carries out boosting heating in (16)；Booster pump (12) of another strand of basic solution of liquid Jing Guo the first motor drive improves
Pressure is completed into the heat for continuing absorption low-grade heat source input channel (14) middle-low grade heat source in steam generator (1)
Cycle.
10. a kind of non-azeotropic mixed working medium cogeneration system of low-grade heat source driving according to claim 7 or 8 or 9
The working method of system, which is characterized in that cycle fluid includes ammonia water mixture, low in low-grade heat source input channel (14)
Grade heat source includes industrial exhaust heat, underground heat and solar energy.
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