CN209212323U - A kind of system for realizing thermoelectricity decoupling using photo-thermal - Google Patents
A kind of system for realizing thermoelectricity decoupling using photo-thermal Download PDFInfo
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- CN209212323U CN209212323U CN201821465480.9U CN201821465480U CN209212323U CN 209212323 U CN209212323 U CN 209212323U CN 201821465480 U CN201821465480 U CN 201821465480U CN 209212323 U CN209212323 U CN 209212323U
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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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
A kind of system for realizing thermoelectricity decoupling using photo-thermal provided by the utility model, the working medium in cold working medium accumulator plant is conveyed heat collector using working medium pump by it, and working medium absorbs heat through heat collector and forms high temperature fluid, is sent into hot working fluid accumulator plant under pump pressure effect.Enter the hot working fluid flow of heat exchanger by flow control valve control, the water supply by temperature lower than 100 DEG C is heated, and is generated the higher steam of temperature and is entered heat exchange station to heat user heat supply, temperature is back to cold working medium accumulator plant lower than 100 DEG C of working medium after cooling.Due to heating live steam of the steam from opto-thermal system a part of in heating steam, reduce the heating load from back pressure machine, therefore electric load is also synchronous reduces, peak load regulation network is participated under heat-supplying mode to realize back pressure turbine, the savings heat regulation thermic load of working medium accumulator plant be can use to adjust electric load, quickly participate in frequency modulation.
Description
Technical field
The utility model relates to thermal power generation control systems, in particular to the system for realizing thermoelectricity decoupling using photo-thermal.
Background technique
Power industry is the basis of national economy.With the variation of China's power consumer power demand and power structure, use
Peak-valley difference is gradually increased electricity round the clock, and for peak-valley difference up to the 30%-40% of power generation peak load, this gives peak load regulation network, unit frequency modulation
Bring immense pressure.For cogeneration units, unit electric load is limited to heat supply, cannot participate in peak load regulation, add
Acute peak load regulation network pressure, is further aggravated abandonment and abandons light situation.
Chinese patent 201210543440.2 discloses a kind of heat benefit realizing solar energy techniques and thermal power plant and combining
With system and method, which collects solar energy using solar thermal collector and generates high temperature thermal energy, as absorption heat pump
Driving heat source extracts condenser circulating water waste heat, and substitution steam turbine is low to add heat source of the steam extraction as low pressure condensation water.So
And the system only realizes sunlight-heat reaources utilization, and can not generate help to peak load regulation.
Chinese patent 201710843018.1 discloses the tower photo-thermal Generating Set Peak shaving Mode of the fused salt based on power producing characteristics
Selection method, this method according to peak regulation period of the tower photo-thermal unit of fused salt and original power producing characteristics, calculate drop power output peak regulation with
The cost of two kinds of peak regulating methods of start and stop peak regulation, obtains the more economical method of operation.
The above method cannot reduce steam turbine electric load under identical heat demand, and back pressure type unit is allowed to participate in electricity
Net peak regulation, to realize that thermoelectricity decouples.
Utility model content
Realize the system of thermoelectricity decoupling to solve back pressure type heat supply using photo-thermal the purpose of the utility model is to provide a kind of
The problems such as unit is not involved in peak regulation, heating parameter is non-adjustable, to help to realize thermoelectricity decoupling.
It is provided by the utility model a kind of to be using what photo-thermal realized thermoelectricity decoupling in order to realize above-mentioned purpose of utility model
Uniting, it is included:
One is used for the heat collector of solar light focusing thermal-arrest；
The hot working fluid accumulator plant that one end is connected with the other end of the heat collector；
One cold working medium accumulator plant, described cold working medium accumulator plant one end pass through a working medium pump and a working medium regulating valve and the collection
The other end of hot device is connected；And
One heat exchanger, one end of working medium circulation are connected with the other end of the hot working fluid accumulator plant, the other end and institute
The other end of Shu Leng working medium accumulator plant is connected；In addition, one end and the feed pump phase of back pressure type cogeneration units of its water circulation
Even, to receive water from water pump；The other end is connected with the exhaust end of the steam turbine from back pressure type cogeneration units, send together
Gas is to heating plant.
Further, one end of the working medium circulation of the heat exchanger passes through flow control valve and the hot working fluid accumulator plant
The other end be connected.
Further, the other end of the water circulation of the heat exchanger passes through heat supply outlet valve and back pressure type cogeneration units
Steam turbine exhaust end be connected.
Further, one end of water circulation of the heat exchanger and the feed pump of back pressure type cogeneration units pass through cold water
Valve is connected.
Further, the two media of the heat exchanger has independent loop, is not directly contacted with.
Further, the cold valves power pressure is higher than heat supply outlet valve power pressure, cold valves and water supply pump discharge or
Feed pump tap is connected.
A kind of method for realizing thermoelectricity decoupling using photo-thermal provided by the utility model, is stored cold working medium by working medium pump
Working medium in standing conveys heat collector, which absorbs heat through heat collector and form high temperature fluid, is sent into heat under pump pressure effect
Working medium accumulator plant.By flow control valve control enter heat exchanger hot working fluid flow, water supply is heated, generate steam into
Enter heat exchange station to heat user heat supply, working medium after cooling is back to cold working medium accumulator plant.Since a part of heating load comes from photo-thermal
The heating live steam of system reduces the heating load of the back pressure machine from back pressure type cogeneration units, and therefore, electric load is also same
Step reduces, so that realizing back pressure turbine participates in peak load regulation network under heat-supplying mode.In the idle situation of heat collector,
Water supply still is heated using the hot working fluid in hot working fluid accumulator plant, auxiliary heat supplying is carried out, peak load regulation fm capacity is provided.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of system that thermoelectricity decoupling is realized using photo-thermal of the utility model；
Label declaration:
1, heat collector；2, hot working fluid accumulator plant；3, flow control valve；4, cold working medium accumulator plant；5, working medium pump；6, working medium tune
Save valve；7, heat supply outlet valve；8, heat exchanger；9, station boiler；10, steam turbine；11, generator；12, heating plant；13, heat is used
Family；14, thermal circulating pump；15, pump is coagulated；16, oxygen-eliminating device；17, feed pump；18, heater；19, cold valves.
Specific embodiment
With reference to the accompanying drawing, the system for realizing thermoelectricity decoupling using photo-thermal of the utility model is described in detail.
Referring to Fig. 1, the system for realizing thermoelectricity decoupling using photo-thermal of the utility model is to be specifically applied to back pressure type heat supply
Unit, it mainly includes heat collector 1, hot working fluid accumulator plant 2, cold working medium accumulator plant 4, working medium pump 5, heat exchanger 8, flow control
Valve 3 processed, working medium regulating valve 6, heat supply outlet valve 7.Wherein, back pressure type thermal power plant unit is by boiler 9, steam turbine 10, generator 11, solidifying
Pump 15, heater 16, feed pump 17, heater 18 form, wherein 10 steam discharge of steam turbine enters heating plant 1213 and followed by heating power
Ring pumps 14 to 13 heat supply of heat user.
Heat collector 1 is solar light focusing heat collector, can be tower, slot type or dish-style heat collecting sheet, configuration bypass line, right
Day tracking system and control system.The photo-thermal working medium of heat collector 1 is fused salt, the ionic liquid that boiling point is higher than heating steam temperature
(kCl, kOH etc.).
Settable safety valve and liquidometer in hot working fluid accumulator plant 2 and cold 4 shell of working medium accumulator plant, safety valve are used for shell
Row pressure, liquidometer is for monitoring heat storage capacity.Shell is respectively provided with insulating layer.Hot working fluid accumulator plant 2 and cold working medium accumulator plant 4 to
In different level, hot working fluid accumulator plant 2 is high-order to be arranged, cold 4 low position of working medium accumulator plant, and flow control is arranged on connecting line
Valve 3 processed, to guarantee circulating for photo-thermal working medium.
Heat exchanger 8 is the heat exchange medium of two kinds of working medium non-direct contacts, and two kinds of working medium are respectively to be used to absorb light and heat energy
The photo-thermal working medium of amount and the water supply of generating set, photo-thermal working medium discharge heat, and temperature reduces, and water supply absorbs heat, generate steam.
Referring back to Fig. 1, boiler 9, generator 11, solidifying pump 15, heater 16, gives pump 17,18 groups of heater at steam turbine 10
At back pressure type cogeneration units, the taking-up of feed pump 17 is drawn water all the way generates steam into heat exchanger 8, mixed with turbine discharge
Enter heating plant 12 after conjunction, cold valves 19 are set in feed pump tap.
One end of hot working fluid accumulator plant 2 is connected with the other end of the heat collector 1.Cold 4 one end of working medium accumulator plant passes through one
Working medium pump 5 and working medium regulating valve 6 are connected with the other end of heat collector 1；
One end of the working medium circulation of heat exchanger 8 is connected with the other end of hot working fluid accumulator plant 2, and the other end and cold working medium are stored up
The other end for depositing station 4 is connected；In addition, one end of its water circulation and the feed pump 17 of back pressure type cogeneration units pass through cold valves
19 are connected, to receive water in water pump 17；The other end is connected with the exhaust end of the steam turbine 10 from back pressure type cogeneration units,
It is supplied gas together to heating plant 12.Heating plant 12 passes through
One end of the working medium circulation of heat exchanger 8 is connected by flow control valve 3 with the other end of hot working fluid accumulator plant 2.
The exhaust that the other end of the water circulation of heat exchanger 8 passes through heat supply outlet valve 7 and the steam turbine 10 of back pressure type cogeneration units
End is connected.
Embodiment one:
Photo-thermal working medium uses fused salt, and 180~200 DEG C of internal temperature of sloppy heat salt accumulator plant heats salt accumulator plant internal temperature
420~450 DEG C.
Safety valve and liquidometer are set in hot working fluid accumulator plant 2 and cold 4 shell of working medium accumulator plant, and safety valve is arranged for shell
Pressure, liquidometer is for monitoring heat storage capacity.Shell is respectively provided with insulating layer.Hot working fluid accumulator plant 2 and cold working medium accumulator plant 4 as
Different level, the high-order arrangement of hot working fluid accumulator plant 2, cold working medium accumulator plant 4) low position, flow control is set on connecting line
Valve 3.
When sunlight strength is big, fused salt, flow control valve (3) standard-sized sheet, with the revolving speed control of pump for liquid salts are conveyed by pump for liquid salts
System enters the flow rate of molten salt of heat exchanger 8；It is weaker or when without light in sunlight, pump for liquid salts is turned down or deactivated, is stored using hot working fluid
Stand 2 with the physics height potential difference of cold working medium accumulator plant 4, enter heat exchanger 8 by adjusting the control of 3 aperture of flow control valve
Flow rate of molten salt.
Preferably, the present embodiment uses fused salt axial-flow pump.
Preferably, exhaust valve and drain valve are set on heat exchanger 8, it is hydrophobic for overpressure protection and start and stop.
Preferably, heat exchanger 8, which is imported and exported, is arranged thermometer on fused salt pipeline, certain temperature safety section is kept,
And alarm is set.
Feed pump 17 take out temperature all the way be 150~170 DEG C draw water into heat exchanger 8 generate temperature be 300~
400 DEG C of steam enter heating plant 12, cold valves 19 are arranged in feed pump tap after mixing with turbine discharge.
Preferably, pressure matcher is arranged in 8 outlet vapor of heat exchanger and 10 steam discharge hybrid position of steam turbine.
Implement two:
The photo-thermal working medium uses ionic liquid, 0~100 DEG C of cold working medium accumulator plant internal temperature, in hot working fluid accumulator plant
250~300 DEG C of portion's temperature.
When sunlight strength is big, conveying ionic liquid, flow control valve (3) standard-sized sheet, with ionic liquid are pumped by ionic liquid
The revolving speed control of body pump enters the working medium flow of heat exchanger 8；It is weaker or when without light in sunlight, turn down or deactivate ionic liquid
Pump, using the physics height potential difference of hot working fluid accumulator plant 2 and cold working medium accumulator plant 4, by adjusting 3 aperture control of flow control valve
System enters the working medium flow of heat exchanger 8.
Preferably, exhaust valve and drain valve are set on heat exchanger 8, it is hydrophobic for overpressure protection and start and stop.
Temperature all the way is taken out in solidifying 17 outlet main pipes of pump be < 100 DEG C draw water that generate temperature into heat exchanger 8 be 250
~300 DEG C of steam enter heating plant 12, cold valves 19 are arranged in feed pump tap after mixing with turbine discharge.
Preferably, pressure matcher is arranged in 8 outlet vapor of heat exchanger and 10 steam discharge hybrid position of steam turbine.
A kind of system work process for realizing that thermoelectricity decouples using photo-thermal provided by the utility model is as follows:
Ionic liquid in cold working medium accumulator plant is conveyed heat collector by working medium pump, and working medium absorbs heat through heat collector and formed
250~300 DEG C of high temperature fluids are sent into hot working fluid accumulator plant under pump pressure effect.It is controlled by flow control valve and enters heat exchange
The hot working fluid flow of device, the water supply by temperature lower than 100 DEG C are heated, and generating temperature is that 250~300 DEG C of steam enter heat exchange
It stands to heat user heat supply, temperature is back to cold working medium accumulator plant lower than 100 DEG C of ionic liquids after cooling.Due to one in heating steam
Heating live steam of some vapor from opto-thermal system reduces the heating load from back pressure machine, therefore electric load also synchronizes drop
It is low, so that realizing back pressure turbine participates in peak load regulation network under heat-supplying mode, it can use ionic liquid and stored in working medium
The savings heat regulation thermic load stood quickly participates in frequency modulation to adjust electric load.In the idle situation of heat collecting sheet, still may be used
Water supply is heated using the hot working fluid in hot working fluid accumulator plant, auxiliary heat supplying is carried out, peak load regulation fm capacity is provided.
The utility model has the following beneficial effects:
The utility model is applied to photo-thermal and back pressure type unit heating system, is configured using fired power generating unit heating system by light
It can be converted into thermal energy, steam turbine electric load is reduced under identical heat demand, back pressure type unit can participate in peak load regulation network, realize
Thermoelectricity decoupling.
Photo-thermal working medium flow and feedwater flow are controlled, if heat supply temperature is higher, working medium flow can be reduced, increased to water flow
Amount；If heat supply temperature is relatively low, working medium flow can be increased, suitably reduction feedwater flow.To adjust heating steam temperature, improves and supply
Hot flexibility.
Double photo-thermal working medium tanks are set, is remarkably improved heat stability, overcomes the disadvantage that light beats is big, when unglazed
Time is still available for heat.
Photo-thermal heating steam is back in condensed water from water supply, does not influence the therrmodynamic system of back pressure type unit.
Finally, it should be noted that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application.To the greatest extent
Pipe is described in detail the utility model referring to embodiment, those skilled in the art should understand that, it is practical to this
Novel technical solution is modified or replaced equivalently, without departing from the spirit and scope of the technical scheme of the present invention,
It should all cover in the scope of the claims of the utility model.
Claims (6)
1. a kind of system for realizing thermoelectricity decoupling using photo-thermal, which is characterized in that it includes:
One is used for the heat collector (1) of solar light focusing thermal-arrest；
The hot working fluid accumulator plant (2) that one end is connected with one end of the heat collector (1)；
One cold working medium accumulator plant (4), described cold working medium accumulator plant (4) one end pass through a working medium pump (5) and a working medium regulating valve (6)
It is connected with the other end of the heat collector (1)；
One heat exchanger (8), one end of working medium circulation are connected with the other end of the hot working fluid accumulator plant (2), the other end with
The other end of the cold working medium accumulator plant (4) is connected；In addition, one end of its water circulation and the water supply of back pressure type cogeneration units
(17) are pumped to receive water, the exhaust end of the other end and the steam turbine (10) from back pressure type cogeneration units in feed pump (17)
It is connected, is supplied gas together to heating plant (12).
2. a kind of system for realizing thermoelectricity decoupling using photo-thermal as described in claim 1, which is characterized in that the heat exchanger
(8) one end of working medium circulation is connected by flow control valve (3) with the other end of the hot working fluid accumulator plant (2), another
End is connected with cold working medium accumulator plant (4).
3. a kind of system for realizing thermoelectricity decoupling using photo-thermal as described in claim 1, which is characterized in that the heat exchanger
(8) exhaust steam end that the other end of water circulation passes through heat supply outlet valve (7) and the steam turbine (10) of back pressure type cogeneration units
It is connected.
4. a kind of system for realizing thermoelectricity decoupling using photo-thermal as described in claim 1, which is characterized in that the heat exchanger
(8) one end and the feed pump (17) of back pressure type cogeneration units of water circulation pass through cold valves (19) and are connected so as to from water supply
It pumps and receives water in (17).
5. a kind of system for realizing thermoelectricity decoupling using photo-thermal as described in claim 1, which is characterized in that the heat exchanger
(8) two media has independent loop, is not directly contacted with.
6. a kind of system for realizing thermoelectricity decoupling using photo-thermal as claimed in claim 4, which is characterized in that the cold valves
(19) power pressure is higher than heat supply outlet valve (7) power pressure, cold valves (19) and feed pump (17) outlet or feed pump (17)
Tap is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821465480.9U CN209212323U (en) | 2018-09-07 | 2018-09-07 | A kind of system for realizing thermoelectricity decoupling using photo-thermal |
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| CN201821465480.9U CN209212323U (en) | 2018-09-07 | 2018-09-07 | A kind of system for realizing thermoelectricity decoupling using photo-thermal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886629A (en) * | 2018-09-07 | 2020-03-17 | 上海明华电力技术工程有限公司 | System and method for realizing thermoelectric decoupling by using photo-thermal |
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2018
- 2018-09-07 CN CN201821465480.9U patent/CN209212323U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886629A (en) * | 2018-09-07 | 2020-03-17 | 上海明华电力技术工程有限公司 | System and method for realizing thermoelectric decoupling by using photo-thermal |
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