CN106870020A - A kind of electricity generation system - Google Patents

A kind of electricity generation system Download PDF

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Publication number
CN106870020A
CN106870020A CN201710077154.4A CN201710077154A CN106870020A CN 106870020 A CN106870020 A CN 106870020A CN 201710077154 A CN201710077154 A CN 201710077154A CN 106870020 A CN106870020 A CN 106870020A
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China
Prior art keywords
heat
storage medium
evaporator
working medium
outlet
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CN201710077154.4A
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CN106870020B (en
Inventor
余志勇
陈明强
唐亚平
周慧
唐娟
孙峰
周楷
王玄骅
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Zhejiang Kesheng Technology Co.,Ltd.
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Zhejiang Supcon Solar Energy Technology Co Ltd
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Priority to CN201710077154.4A priority Critical patent/CN106870020B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10Adaptations for driving, or combinations with, electric generators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines

Abstract

The present invention relates to a kind of electricity generation system, including high-temperature heat-storage medium reservoirs, low temperature heat-storage medium storage tank, heat-exchanger rig, steam turbine, generator, steam discharge condensing unit;Heat-exchanger rig includes two superheaters, two evaporators and two preheaters of series connection, high-temperature heat-storage medium reservoirs, superheater, evaporator, preheater and low temperature heat-storage medium storage tank are sequentially connected, form the path of heat-storage medium circulation, exhaust condensing unit, preheater, evaporator, superheater and steam turbine are sequentially connected, form the path of device of working medium circulation, after device of working medium completes heat exchange with high-temperature heat-storage medium in heat-exchanger rig, form the acting of steam steam supply turbine, to drive electrical power generators, the condensed water that the steam of steam turbine discharge enters exhaust condensing unit formation carries out heat exchange as device of working medium into heat-exchanger rig and high-temperature heat-storage medium.Compared with prior art, heat-exchanger rig of the invention improves the ability that whole electricity generation system tackles failure.

Description

A kind of electricity generation system
Technical field
The present invention relates to solar energy thermal-power-generating field, more particularly, to a kind of electricity generation system.
Background technology
With the continuous burning of conventional fossil fuel, the available conventional energy resource of the mankind is fewer and feweri, and fossil energy A large amount of consumptions, destroyed the ecological environment of human survival, seriously threaten safety and the existence of the mankind.In order to protect people The ball ecological environment that class is depended on for existence, it is necessary to take measures to reduce the consumption of fossil energy, Devoting Major Efforts To Developing is using cleaning, clean New and renewable sources of energy, walk the road of the green energy resource harmonious with ecological environment.
Solar energy is the permanent energy most abundant in the world, and the solar energy total amount that the earth receives every year is 1 × 1018kW H, this, equivalent to 5 × 1014 barrels of crude oil, is verify crude oil reserve nearly thousand times, is more than 10,000 times of the world year consumption gross energy.
Solar energy thermal-power-generating is one of major way of Solar use, and the solar energy thermal-power-generating station for being equipped with heat reservoir can To realize the electric power output of continuous-stable, especially night continual electric power output.Solar energy thermal-power-generating technology mainly has tower The technology schools such as technology, trough technology, dish-style technology, linear Fresnel technology, wherein tower technology has focusing ratio higher, Medium temperature and vapor (steam) temperature higher can be realized, quality of steam is higher.
Wherein, the tower-type solar thermal power generating system comprising heat reservoir refers to heat heat-storage medium using solar energy, And then the heat transfer between heat-storage medium and device of working medium is realized using heat-exchanger rig, and superheated steam is produced, it is final using overheat Steam drive steam turbine drives generator to produce electric energy.In the conventional tower-type solar thermal power generating system comprising heat reservoir In, heat-exchanger rig commonly uses single heat-exchanger rig, i.e., only one superheater, an evaporator, a preheater come realize storage Heat exchange between thermal medium and device of working medium.Using single heat-exchanger rig in the case of a certain system equipment failure, can be direct Influence heat-exchanger rig operation, causes whole electricity generation system to be shut down indirectly, causes power station to be unable to normal power generation, triggers a series of damage Lose.On the other hand, tower type solar energy thermal power generation station often can be because power network demand or system operation demand, it is desirable to system underload Operation, now heat-exchanger rig need to coordinate steam turbine to realize that underrun is operated with varying duty, if now heat-exchanger rig is single One heat-exchanger rig, under low loading conditions, heat-exchanger rig occurs that operational efficiency is low, heat transfer effect difference the problems such as.
The content of the invention
The purpose of the present invention is exactly to provide a kind of electricity generation system for the defect for overcoming above-mentioned prior art to exist, the hair Heat-exchanger rig in electric system is realized carrying by using two superheaters, two evaporators, two preheater connection in series-parallel designs The ability that whole electricity generation system tackles failure is risen, while lifting the heat transfer effect of heat-exchanger rig under underload.
The purpose of the present invention can be achieved through the following technical solutions:A kind of electricity generation system, including:
High-temperature heat-storage medium reservoirs, for storing high-temperature heat-storage medium;
Low temperature heat-storage medium storage tank, for storing low temperature heat-storage medium;
Heat-exchanger rig, is connected with the high-temperature heat-storage medium reservoirs and low temperature heat-storage medium storage tank, for realizing that high temperature is stored up Heat exchange between thermal medium and device of working medium, superheated steam is converted into by the device of working medium of liquid, while high-temperature heat-storage medium turns It is changed into low temperature heat-storage medium;
Steam turbine, is connected with the heat-exchanger rig and generator, drives generator to produce under the driving of the superheated steam Raw electric energy;
Steam discharge condensing unit, is connected with the heat-exchanger rig and steam turbine, and the steam that the steam turbine is discharged is condensed into Water, and further will carry out heat friendship with the high-temperature heat-storage medium as device of working medium in condensed water importing heat-exchanger rig Change, it is characterised in that
The heat-exchanger rig includes:First superheater, the second superheater, the first evaporator, the second evaporator, the first preheating Device and the second preheater,
The heat-storage medium outlet of the high-temperature heat-storage medium reservoirs is by the first heat-storage medium isocon respectively with described the The heat-storage medium entrance connection of the heat-storage medium entrance and the second superheater of one superheater, the heat-storage medium of first superheater Outlet and the second superheater heat-storage medium export converged by the first heat-storage medium collecting pipe after with first evaporator Heat-storage medium entrance is connected, and the heat-storage medium outlet of first evaporator is by heat-storage medium transfer tube and the described second evaporation Device heat-storage medium entrance connection, second evaporator heat-storage medium outlet by the second heat-storage medium isocon respectively with The heat-storage medium entrance connection of the heat-storage medium entrance and the second preheater of first preheater, the storage of first preheater The heat-storage medium outlet of thermal medium outlet and the second preheater passes through the second heat-storage medium collecting pipe and the low temperature heat-storage medium The heat-storage medium entrance connection of storage tank;
It is described exhaust condensing unit outlet by the first device of working medium isocon respectively with the water conservancy project of first preheater The device of working medium entrance connection of matter entrance and the second preheater, the device of working medium outlet of first preheater and the water of the second preheater Sender property outlet is connected by pipeline with the device of working medium entrance of first evaporator and the device of working medium entrance of the second evaporator respectively, The device of working medium outlet of first evaporator and the device of working medium outlet of the second evaporator are respectively by pipeline and the described first overheat The device of working medium entrance connection of the device of working medium entrance and the second superheater of device, the device of working medium outlet of first superheater and the second mistake Hot device device of working medium outlet connected with the steam inlet of the steam turbine by pipeline respectively, the steam (vapor) outlet of the steam turbine and The entrance connection of the exhaust condensing unit.
Used as a kind of improvement of electricity generation system of the present invention, the electricity generation system also includes the first branch pipe, described first Branch pipe is provided with the first valve, and one end of first branch pipe connects with the first heat-storage medium collecting pipe, described first The other end of pipe is connected with the heat-storage medium transfer tube, and the height of first evaporator is entered by first valve regulated Warm heat-storage medium.
Used as a kind of improvement of electricity generation system of the present invention, the electricity generation system also includes the second branch pipe, described second Branch pipe is provided with the second valve, and one end of second branch pipe connects with the heat-storage medium transfer tube, second branch pipe The other end is connected with the second heat-storage medium isocon, and the height of second evaporator is entered by second valve regulated Warm heat-storage medium.
Used as a kind of improvement of electricity generation system of the present invention, the electricity generation system also includes the first reheater and second again Hot device, the steam turbine is reheat steam turbine, and the reheating of the steam turbine discharge is drawn gas by the 4th device of working medium shunt conduit point Device of working medium entrance not with first reheater and the second reheater is connected, the water of first reheater and the second reheater Sender property outlet is connected by pipeline with the reheated steam entrance of the steam turbine respectively;
The heat-storage medium outlet of the high-temperature heat-storage medium reservoirs is by the 3rd heat-storage medium isocon respectively with described the The heat-storage medium of the heat-storage medium entrance connection of one reheater and the second reheater, first reheater and the second reheater goes out Mouth is connected after being converged by the 3rd heat-storage medium collecting pipe with the heat-storage medium entrance of first evaporator.
Used as a kind of improvement of electricity generation system of the present invention, the evaporator is autoclave evaporator, hydrocone type evaporation Any one in device or the drum separate type evaporator with forced circulation device.
As a kind of improvement of electricity generation system of the present invention, first preheater, the second preheater, the first overheat Device, the second superheater, the first reheater and the second reheater are hairpin-type heat exchanger.
Compared with prior art, the present invention has advantages below:
1st, the electricity generation system that the present invention is provided is set using two preheaters, two evaporators and two superheater connection in series-parallel Meter, when certain device fails in system, can be switched by pipeline, and another of increase has the right of identical function The operating load of equipment is answered, so as to ensure electricity generation system without shutting down, and then is reduced because economical caused by electricity generation system shutdown Loss.
2nd, in heat-exchanger rig of the invention, on the one hand, two evaporators are in parallel in device of working medium side, i.e., from two preheatings The device of working medium flowed out in device to conflux and shunt respectively entrance the first evaporator and the second evaporator, that is, water conservancy project simultaneously again after mixing The device of working medium temperature that matter side enters in the first evaporator and the second evaporator is identical, and on the other hand, two evaporators are in heat accumulation Media side is connected, i.e., the heat-storage medium flowed out from two superheaters sequentially passes through the first evaporator and the second evaporator, It is exactly that heat-storage medium side is higher than heat accumulation Jie into the second evaporator into the heat-storage medium temperature in the first evaporator The temperature of matter.The temperature difference itself born by an equipment is made using this kind design, change is born to be born by two equipment in equipment The temperature difference reduced, so as to reduce the thermal (temperature difference) stress of equipment.For example, due to heat-storage medium pass through in the first evaporator with water Working medium exchanges heat, temperature reduction so that the temperature difference in the second evaporator between device of working medium and heat-storage medium is reduced, so as to Enough reduce in the second evaporator tube side with shell side because of the thermal stress suffered by temperature differencies.Therefore, using design of the invention, On the premise of evaporator section can realize that identical heat exchange efficiency is exported, the evaporator Duan Yudan being made up of two evaporator series The evaporator section that an only evaporator is constituted is compared, and the former can substantially reduce the thermal stress suffered by evaporator such that it is able to Extend the service life of heat-exchanger rig.
3rd, for device of working medium, often storage density is relatively low for medium sensible heat, and this results in heat-storage medium for heat-storage medium With device of working medium heat transfer process, the flow of heat-storage medium often much larger than the flow of device of working medium, such as uses single equipment, then may be because For heat-storage medium flow is larger, cause heat-storage medium flow resistance too big, so as to be increased in heat-exchanger rig convey heat-storage medium and The electric energy of consumption, and then cause that generating station service increases, that is, increase cost of electricity-generating.Using the design of the technical program, preheating Device, superheater mode in parallel, on the premise of same generated output is reached, may be such that the flow of wherein every equipment is obtained Reduce, that is, reduce flow resistance of the heat-storage medium in heat-exchanger rig, reduce generating station service, reduce cost of electricity-generating.
Brief description of the drawings
Fig. 1 is the theory structure block diagram of electricity generation system of the present invention.
Fig. 2 is a kind of structure chart of electricity generation system of the invention.
Fig. 3 is the structure chart of another electricity generation system of the invention.
It is designated in figure:1- low temperature heat-storage medium storage tanks, 2- high-temperature heat-storage medium reservoirs, the superheaters of 3- first, 4- second Superheater, the evaporators of 5- first, the evaporators of 6- second, the preheaters of 7- first, the preheaters of 8- second, 9- steam turbines, 10- generates electricity Machine, 11- steam discharge condensing units, 12- the first heat-storage medium isocons, the device of working medium collecting pipes of 13- the 3rd, the heat-storage mediums of 14- first Collecting pipe, the device of working medium isocons of 15- the 3rd, 16- the second device of working medium collecting pipes, 17- the second device of working medium isocons, 18- heat accumulations are situated between Matter transfer tube, the branch pipes of 19- second, 20- the second heat-storage medium isocons, the first device of working medium of 21- collecting pipe, the device of working medium of 22- first Isocon, 23- the second heat-storage medium collecting pipes, the branch pipes of 24- first, the valves of 25- first, the reheaters of 26- first, 27- second is again Hot device, the heat-storage medium isocons of 28- the 3rd, the heat-storage medium collecting pipes of 29- the 3rd, the device of working medium collecting pipes of 30- the 4th, 31- the 4th Device of working medium isocon.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention Implement, give detailed implementation method and specific operating process, but protection scope of the present invention is not limited to following implementations Example.
Embodiment 1
As shown in figure 1, a kind of electricity generation system provided in an embodiment of the present invention, including:High-temperature heat-storage medium reservoirs 2:For Storage high-temperature heat-storage medium;Low temperature heat-storage medium storage tank 1:For storing low temperature heat-storage medium;Heat-exchanger rig:For realizing heat accumulation Heat exchange between medium and device of working medium, superheated steam is converted into by the device of working medium of liquid;Steam turbine 9:In superheated steam Lower drive generator 10 is driven to produce electric energy;Exhaust condensing unit 11:The steam that steam turbine 9 is discharged is condensed into water, one is gone forward side by side Condensed water is imported and exchanged heat with heat-storage medium as device of working medium in heat-exchanger rig by step.
Specifically, as shown in Fig. 2 heat-exchanger rig includes the first superheater 3, the second superheater 4, the first evaporator 5, second Evaporator 6, the first preheater 7 and the second preheater 8, the heat-storage medium outlet of high-temperature heat-storage medium reservoirs 2 is by the first storage Thermal medium isocon 12 is connected with the heat-storage medium entrance of the first superheater 3 and the heat-storage medium entrance of the second superheater 4 respectively, The heat-storage medium outlet of the first superheater 3 and the heat-storage medium outlet of the second superheater 4 pass through the first heat-storage medium collecting pipe 14 Connected with the heat-storage medium entrance of the first evaporator 5 after converging, the heat-storage medium outlet of the first evaporator 5 is passed by heat-storage medium Defeated pipe 18 is connected with the heat-storage medium entrance of the second evaporator 6, and the heat-storage medium outlet of the second evaporator 6 is situated between by the second heat accumulation Matter isocon 20 is connected with the heat-storage medium entrance of the first preheater 7 and the heat-storage medium entrance of the second preheater 8 respectively, and first Preheater 7 heat-storage medium outlet and the second preheater 8 heat-storage medium outlet pass through the second heat-storage medium collecting pipe 23 with it is low The heat-storage medium entrance connection of warm heat-storage medium storage tank 1;
Further, exhaust condensing unit 11 outlet by the first device of working medium isocon 22 respectively with the first preheater 7 Device of working medium entrance and the second preheater 8 device of working medium entrance connection, the first preheater 7 device of working medium outlet and the second preheater 8 device of working medium outlet is connected by the device of working medium entrance of the device of working medium entrance and the second evaporator 6 of pipeline and the first evaporator 5 respectively Lead to (it should be noted that the device of working medium outlet of the first preheater 7 and the device of working medium outlet of the second preheater 8 also can be by first After device of working medium collecting pipe 21 converges, then steamed by the second device of working medium isocon 17 and the device of working medium entrance of the first evaporator 5 and second The connection of hair device 6 device of working medium entrance), the device of working medium outlet of the first evaporator 5 and the device of working medium outlet of the second evaporator 6 pass through respectively Pipeline is connected (it should be noted that first with the device of working medium entrance of the first superheater 3 and the device of working medium entrance of the second superheater 4 After the device of working medium outlet of evaporator 5 and the device of working medium outlet of the second evaporator 6 can also be converged by the second device of working medium collecting pipe 16, Connected by the device of working medium entrance of the device of working medium entrance and the second superheater 4 of the 3rd device of working medium isocon 15 and the first superheater 3 again It is logical), the device of working medium outlet of the first superheater 3 and the device of working medium outlet of the second superheater 4 are respectively by the steaming of pipeline and steam turbine 9 Vapour entrance is connected or the device of working medium outlet of the first superheater 3 passes through the 3rd device of working medium with the device of working medium outlet of the second superheater 4 Collecting pipe 13 connect after converging with the steam inlet of steam turbine 9, the steam (vapor) outlet of steam turbine 9 and is vented the entrance of condensing unit 11 Connection.
The heat-exchanger rig that the present invention is provided is designed using two preheaters, two evaporators and two superheater connection in series-parallel, When certain device fails in system, can be switched by pipeline, another of increase has the correspondence of identical function The operating load of equipment, so as to ensure electricity generation system without shutting down, and then is reduced because of economic damage caused by electricity generation system shutdown Lose.
The present invention also can provide device of working medium, extraneous device of working medium supply using extraneous device of working medium feedway (not shown) Device is connected with the device of working medium entrance of the first preheater 7 and the device of working medium entrance of the second preheater 8.
As shown in figure 1, in one embodiment of the invention, the electricity generation system also includes the first branch pipe 24, is set on the first branch pipe 24 Have the first valve 25, one end of the first branch pipe 24 connects with the first heat-storage medium collecting pipe 14, the other end of the first branch pipe 24 with Heat-storage medium transfer tube 18 is connected, and the high-temperature heat-storage medium of the first evaporator 5 is entered by the flexible modulation of the first valve 25.
As shown in figure 1, in one embodiment of the invention, the electricity generation system also includes the second branch pipe 19, is set on the second branch pipe 19 The one end for having the second valve, the second branch pipe 19 is connected with heat-storage medium transfer tube 18, and the other end of the second branch pipe 19 and second is stored up Thermal medium isocon 20 is connected, and the high-temperature heat-storage medium of the second evaporator 6 is entered by the second valve regulated.
In one embodiment of the invention, evaporator is autoclave evaporator, hydrocone type evaporator or the vapour with forced circulation device Any one in bag separate type evaporator.Certainly, it is alternatively chosn to the evaporator of other forms.
In one embodiment of the invention, the first preheater 7, the second preheater 8, the first superheater 3, the second superheater 4 is Hairpin-type heat exchanger.Certainly, the present invention is not limited thereto, and may be selected to be other form heat exchangers, the first preheater 7, Two preheaters 8, the first superheater 3, the second superheater 4 also can be different.
Embodiment 2
As shown in figure 3, the electricity generation system that the present embodiment is provided is as embodiment 1, its difference is:The present embodiment Electricity generation system also include the first reheater 26 and the second reheater 27, steam turbine 9 is reheat steam turbine 9, including at least one Low pressure (LP) cylinder and a high pressure cylinder, low pressure (LP) cylinder discharge low-pressure steam by the road of the 4th device of working medium isocon 31 respectively with the first reheating Device 26 is connected with the device of working medium entrance of the second reheater 27, the device of working medium outlet difference of the first reheater 26 and the second reheater 27 Connected with the steam inlet of steam turbine 9 after meeting at the 4th device of working medium collecting pipe 30 by pipeline;
High-temperature heat-storage medium reservoirs 2 heat-storage medium outlet by the 3rd heat-storage medium isocon 28 respectively with the first reheating Device 26 is connected with the heat-storage medium entrance of the second reheater 27, the heat-storage medium outlet of the first reheater 26 and the second reheater 27 Connected with the heat-storage medium entrance of the first evaporator 5 after being converged by the 3rd heat-storage medium collecting pipe 29.
To sum up, in heat-exchanger rig of the invention, on the one hand, two evaporators are in parallel in device of working medium side, i.e., from two In preheater flow out device of working medium conflux mixing after shunt again respectively simultaneously entrance the first evaporator 5 and the second evaporator 6, also It is device of working medium side identical with the device of working medium temperature in the second evaporator 6 into the first evaporator 5, on the other hand, two evaporations Device is connected in heat-storage medium side, i.e., the heat-storage medium flowed out from two superheaters sequentially passes through the first evaporator 5 and second Evaporator 6, that is, heat-storage medium side is higher than into the second evaporator into the heat-storage medium temperature in the first evaporator 5 The temperature of the heat-storage medium in 6.The temperature difference that itself is born by an equipment is made using this kind design, change by two equipment to be held Receive, the temperature difference born in equipment has reduced, so as to reduce the thermal (temperature difference) stress of equipment.For example, because heat-storage medium passes through the Exchanged heat with device of working medium in one evaporator 5, temperature reduction so that the temperature in the second evaporator 6 between device of working medium and heat-storage medium Difference is reduced such that it is able to reduce in the second evaporator 6 tube side with shell side because of the thermal stress suffered by temperature differencies.Therefore, Using design of the invention, on the premise of evaporator section can realize that identical heat exchange efficiency is exported, by two evaporator strings Joint group into evaporator section with an independent evaporator constitute evaporator section compared with, the former can be substantially reduced suffered by evaporator The thermal stress for arriving such that it is able to extend the service life of heat-exchanger rig.
For device of working medium, medium sensible heat and storage density are often relatively low, and this results in heat-storage medium for heat-storage medium With device of working medium heat transfer process, the flow of heat-storage medium often much larger than the flow of device of working medium, such as uses single equipment, then may be because For heat-storage medium flow is larger, cause heat-storage medium flow resistance too big, so as to be increased in heat-exchanger rig convey heat-storage medium and The electric energy of consumption, and then cause that generating station service increases, that is, increase cost of electricity-generating.Using the design of the technical program, preheating Device, superheater mode in parallel, on the premise of same generated output is reached, may be such that the flow of wherein every equipment is obtained Reduce, that is, reduce flow resistance of the heat-storage medium in heat-exchanger rig, reduce generating station service, reduce cost of electricity-generating.
Although the present invention is illustrated to above example, but it is to be understood that this is not meant to that the present invention will limitation In above example.Conversely, the present invention will include may be embodied in the essence of the invention being defined by the appended claims All replacements in god and scope, change and equivalent.

Claims (6)

1. a kind of electricity generation system, including:
High-temperature heat-storage medium reservoirs, for storing high-temperature heat-storage medium;
Low temperature heat-storage medium storage tank, for storing low temperature heat-storage medium;
Heat-exchanger rig, is connected with the high-temperature heat-storage medium reservoirs and low temperature heat-storage medium storage tank, for realizing that high-temperature heat-storage is situated between Heat exchange between matter and device of working medium, superheated steam is converted into by the device of working medium of liquid, while high-temperature heat-storage medium is changed into Low temperature heat-storage medium;
Steam turbine, is connected with the heat-exchanger rig and generator, drives generator to produce electricity under the driving of the superheated steam Energy;
Steam discharge condensing unit, is connected with the heat-exchanger rig and steam turbine, and the steam that the steam turbine is discharged is condensed into water, and Further condensed water is imported in heat-exchanger rig carries out heat exchange as device of working medium with the high-temperature heat-storage medium, and it is special Levy and be,
The heat-exchanger rig includes:First superheater, the second superheater, the first evaporator, the second evaporator, the first preheater with And second preheater,
The high-temperature heat-storage medium reservoirs heat-storage medium outlet by the first heat-storage medium isocon respectively with first mistake The heat-storage medium entrance connection of the heat-storage medium entrance and the second superheater of hot device, the heat-storage medium outlet of first superheater Heat accumulation after being converged by the first heat-storage medium collecting pipe with the outlet of the heat-storage medium of the second superheater with first evaporator Medium inlet connects, and the heat-storage medium outlet of first evaporator passes through heat-storage medium transfer tube and second evaporator Heat-storage medium entrance is connected, the outlet of the heat-storage medium of second evaporator by the second heat-storage medium isocon respectively with it is described The heat-storage medium entrance connection of the heat-storage medium entrance and the second preheater of the first preheater, the heat accumulation of first preheater is situated between Matter is exported and the heat-storage medium outlet of the second preheater passes through the second heat-storage medium collecting pipe and the low temperature heat-storage medium storage tank Heat-storage medium entrance connection;
Device of working medium of the outlet of the exhaust condensing unit by the first device of working medium isocon respectively with first preheater enters Mouth is connected with the device of working medium entrance of the second preheater, and the device of working medium of first preheater exports the device of working medium with the second preheater Outlet is connected by pipeline with the device of working medium entrance of first evaporator and the device of working medium entrance of the second evaporator respectively, described The device of working medium outlet of the first evaporator and the device of working medium outlet of the second evaporator pass through pipeline and first superheater respectively The device of working medium entrance connection of device of working medium entrance and the second superheater, the device of working medium outlet of first superheater and the second superheater Device of working medium outlet connected with the steam inlet of the steam turbine by pipeline respectively, the steam (vapor) outlet of the steam turbine with it is described It is vented the entrance connection of condensing unit.
2. a kind of electricity generation system as claimed in claim 1, it is characterised in that the electricity generation system also includes the first branch pipe, described First branch pipe is provided with the first valve, and one end of first branch pipe connects with the first heat-storage medium collecting pipe, and described The other end of one branch pipe is connected with the heat-storage medium transfer tube, and first evaporator is entered by first valve regulated High-temperature heat-storage medium.
3. a kind of electricity generation system as claimed in claim 1, it is characterised in that the electricity generation system also includes the second branch pipe, described Second branch pipe is provided with the second valve, and one end of second branch pipe connects with the heat-storage medium transfer tube, described second The other end of pipe is connected with the second heat-storage medium isocon, and second evaporator is entered by second valve regulated High-temperature heat-storage medium.
4. a kind of electricity generation system as claimed in claim 1, it is characterised in that the electricity generation system also includes the first reheater and the Two reheaters, the steam turbine is reheat steam turbine, and the reheating of the steam turbine discharge is drawn gas by the 4th device of working medium isocon Device of working medium entrance of the road respectively with first reheater and the second reheater is connected, first reheater and the second reheater Device of working medium outlet connected with the reheated steam entrance of the steam turbine by pipeline respectively;
The heat-storage medium outlet of the high-temperature heat-storage medium reservoirs passes through the 3rd heat-storage medium isocon respectively with described first again The heat-storage medium outlet of the heat-storage medium entrance connection of hot device and the second reheater, first reheater and the second reheater is logical Cross after the 3rd heat-storage medium collecting pipe converges and connected with the heat-storage medium entrance of first evaporator.
5. a kind of electricity generation system according to claim 1, it is characterised in that the evaporator is autoclave evaporator, siphon Any one in formula evaporator or the drum separate type evaporator with forced circulation device.
6. a kind of electricity generation system according to claim 1, it is characterised in that first preheater, the second preheater, One superheater, the second superheater, the first reheater and the second reheater are hairpin-type heat exchanger.
CN201710077154.4A 2017-02-13 2017-02-13 A kind of electricity generation system Active CN106870020B (en)

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* Cited by examiner, † Cited by third party
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US4604867A (en) * 1985-02-26 1986-08-12 Kalina Alexander Ifaevich Method and apparatus for implementing a thermodynamic cycle with intercooling
DE4432960C1 (en) * 1994-09-16 1995-11-30 Steinmueller Gmbh L & C Drive system for steam power station boiler plant
DE102012111775A1 (en) * 2012-12-04 2014-06-05 Deutsches Zentrum für Luft- und Raumfahrt e.V. Solar thermal steam generation stage, solar thermal power plant and method of operating a solar thermal steam generation stage
CN204830511U (en) * 2015-07-14 2015-12-02 中国能源建设集团广东省电力设计研究院有限公司 Solar energy spotlight thermal -arrest and conventional energy coupling power generation system
CN105823246A (en) * 2016-03-25 2016-08-03 青海中控太阳能发电有限公司 Heat exchange system
CN106089340A (en) * 2016-07-26 2016-11-09 康达新能源设备股份有限公司 Groove type solar conduction oil and fused salt mixing heat power generation system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604867A (en) * 1985-02-26 1986-08-12 Kalina Alexander Ifaevich Method and apparatus for implementing a thermodynamic cycle with intercooling
DE4432960C1 (en) * 1994-09-16 1995-11-30 Steinmueller Gmbh L & C Drive system for steam power station boiler plant
DE102012111775A1 (en) * 2012-12-04 2014-06-05 Deutsches Zentrum für Luft- und Raumfahrt e.V. Solar thermal steam generation stage, solar thermal power plant and method of operating a solar thermal steam generation stage
CN204830511U (en) * 2015-07-14 2015-12-02 中国能源建设集团广东省电力设计研究院有限公司 Solar energy spotlight thermal -arrest and conventional energy coupling power generation system
CN105823246A (en) * 2016-03-25 2016-08-03 青海中控太阳能发电有限公司 Heat exchange system
CN106089340A (en) * 2016-07-26 2016-11-09 康达新能源设备股份有限公司 Groove type solar conduction oil and fused salt mixing heat power generation system

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