CN108397365A - One kind being based on photo-thermal power generation co-generation unit and method - Google Patents
One kind being based on photo-thermal power generation co-generation unit and method Download PDFInfo
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- CN108397365A CN108397365A CN201810126905.1A CN201810126905A CN108397365A CN 108397365 A CN108397365 A CN 108397365A CN 201810126905 A CN201810126905 A CN 201810126905A CN 108397365 A CN108397365 A CN 108397365A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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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
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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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]
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses one kind being based on photo-thermal power generation co-generation unit and method, heat transferring medium of this programme respectively with solar energy heat-collection field in solar energy thermal-power-generating subsystem in the way of fuse salt heat accumulation exchanges heat, and exchanges heat with the steam-turbine of steam-electric power in solar energy thermal-power-generating subsystem；And it is coupled to heat supply network heat supply with the steam turbine in solar energy thermal-power-generating subsystem by fuse salt heat accumulation.Scheme provided by the invention can take into account user's heat demand and power generation needs, effectively overcome the defect present in the prior art.
Description
Technical field
The invention belongs to field of solar energy utilization, more particularly to a kind of cogeneration of heat and power for taking into account power load and using thermic load
Scheme.
Background technology
Currently, international energy industry is a period full of change, the new energy the relevant technologies form in global field is not
The completely new energy technology wall of a batch such as disconnected increase, such as distributed energy, shale gas, novel energy-storing system, carbon cycle system
Base is gradually broken through, and it is the leading single pattern of the energy with oil and coal that this, which changes in the past,.Only 2016, wind electricity generating system,
Solar power generation, biomass energy and waste conversion energy device etc. increase total capacity about 138.5GW for global power, compared to
Go up within 2015 8%.The investment amount of fossil fuel has been far smaller than the investment for regenerative resource installed capacity, and
And regenerative resource installation amount, the half of new energy installation amount is accounted for, this is highest level so far.Emerging energy
Increase the bulk composition of the energy newly as Countries now, overwhelming majority developed countries and economy has been set about or at present
The Correlative plan for supporting energy science and technology innovation is worked out, to break away from energy crisis, each state all places hope on next new one
Initiative is fully obtained in wheel energy industry technological revolution.
In utilization of new energy resources, solar energy thermal-power-generating is generally termed concentrating solar power generation, before being great development instantly
One of new energy form of scape.It obtains thermal energy by assembling solar radiation, and thermal energy is converted to high-temperature steam, steam drive vapour
Turbine generates electricity.It can be divided into slot type power generation, tower-type electricity generation and dish-style power generation according to the form of thermal-arrest.
At present, slot type power station quantity is most, is the type of technology and cost all comparative maturities in the whole world, and quantity is approximately
It runs and is building the 80% of sum, tower power station accounting is more than 11%, and dish-style power station is minimum, and accounting is less than 9%.Solar thermal energy
Collecting efficiency is not only only that the transfer efficiency of heat collector, also resides in the heat transfer efficiency in whole system heat transfer link, reliably
System is designed can greatly promote solar thermal utilization efficiency with excellent equipment performance, reduce energy waste, improve ability
Density.
And it is typically all in the prior art single solar-thermal generating system, power load can not be taken into account simultaneously and heat supply network heat is negative
Lotus.
Invention content
For the problems of single solar-thermal generating system is used in the prior art, need one kind can meet simultaneously and
Adjust electricity consumption and the photo-thermal power generation scheme with heat demand.
For this purpose, problem to be solved by this invention, which is to provide one kind, being based on photo-thermal power generation co-generation unit and method, with
Overcome defect present in the prior art.
To solve the above-mentioned problems, provided by the invention based on photo-thermal power generation co-generation unit, including：Solar heat is sent out
Electronic system and fuse salt heat accumulation subsystem, the fuse salt heat accumulation subsystem can respectively in solar energy thermal-power-generating subsystem too
It is positive can the heat transferring medium of heat collecting field exchange heat, and with the steam-turbine of steam-electric power in solar energy thermal-power-generating subsystem into
Row heat exchange；And the fuse salt heat accumulation subsystem is coupled with the steam turbine in solar energy thermal-power-generating subsystem to heat supply network heat supply.
Further, the fuse salt heat accumulation subsystem includes mainly high-temperature fusion salt holding vessel, heat exchanger, watery fusion
Salt holding vessel and fuse salt as heat transferring medium, the low temperature molten salt holding vessel are connected to high-temperature fusion by heat exchanger
Salt holding vessel.
Further, the fuse salt heat accumulation subsystem completes fuse salt and solar energy thermal-power-generating subsystem by heat exchanger
Heat exchange between the heat transferring medium of middle solar energy heat-collection field, high-temperature fusion salt holding vessel in the fuse salt heat accumulation subsystem with it is low
Two heat-exchanging loops are formed between warm fuse salt holding vessel, are respectively used to and steam-electric power in heat supply network and solar energy thermal-power-generating subsystem
Steam-turbine exchange heat.
Further, the co-generation system further includes the regulating devices such as several instrument, valve, to control fuse salt heat accumulation
Heat accumulation/Heat release mode of system.
Further, in the co-generation system further include several temperature, pressure monitoring device, monitor steam-turbine pressure
Power, temperature, monitoring user-side heating network pressure, temperature, monitoring solar energy heat-collection field go out to flow heat exchange medium temperature, pressure, according to
This can judge heat-transfer working medium flow direction and operating mode according to the parameter detected.
Further, the plate heat exchanger for supporting that multimedium exchanges heat can be used in heat supply network side in the co-generation system, it is described
Multimedium plate heat exchanger there is parallel passage structure, first passage circulates fuse salt, second channel flowing steam, and third is logical
Road is between the first, second channel, and circulation medium is water；Each medium is not in contact with each other, high-temperature fusion salt and steam flow contrary,
High-temperature fusion salt is set to be coupled with turbine exhaust heat steam to heat supply network heat supply.
To solve the above-mentioned problems, provided by the invention to be based on photo-thermal power generation cogeneration method, it is stored up based on fuse salt
Heat transferring medium of the mode of heat respectively with solar energy heat-collection field in solar energy thermal-power-generating subsystem exchanges heat, and and solar energy
The steam-turbine of steam-electric power exchanges heat in hot power generation sub-system；And pass through fuse salt heat accumulation and solar energy thermal-power-generating
Steam turbine in system is coupled to heat supply network heat supply.
Further, in the co-production, in the solar energy heat-collection field thermal-arrest starting stage, solar energy heat-collection field is detected
In heat transferring medium reach steam turbine inlet steam heating temperature requirement, heat transferring medium preferentially to steam turbine generator exchange heat；
When the heat transferring medium in solar energy heat-collection field by light field continuous heating to relative to steam superheating, detect heat exchange work
Matter temperature is rich, then is recycled to fuse salt heat accumulation subsystem and carries out heat exchange heat accumulation.
Further, it in the co-production, is reduced in solar energy heat-collection field collection thermal energy power, that is, detects that light field heat exchange is situated between
When matter temperature drops to set temperature, fuse salt heat accumulation subsystem conveys high-temperature fusion salt to steam generator heat exchanger, continues
Steam is heated, ensures steam exit pressure value stabilization；Low temperature molten salt after heat release will again return to fuse salt heat accumulation
In subsystem.
Further, the outlet vapor from steam turbine heat supply network is transported in the co-production directly to be changed
Heat；When the outlet vapor of steam turbine carries out the shortage of heat that heat is changed, monitor that outlet vapor pressure is less than heat supply setting value, then
Heat reservoir valve is opened, is exchanged heat with heat supply network using fuse salt heat accumulation subsystem.
Further, the co-production is according to the hot output and common user heat demand of solar energy heat-collection field and power generation
Demand, monitoring key parameter form automatic regulating system, automatically switch operating mode, change heat-transfer working medium flow direction and flow.
Scheme provided by the invention can take into account user's heat demand and power generation needs, when conduction oil heat is sent out more than steam turbine
Electric heating measuring, conduction oil carry out heat accumulation, when being unsatisfactory for steam turbine power generation demand heat, heat reservoir heat release with fuse salt heat exchange；Together
Shi Liyong turbine exhaust heats are coupled with heat reservoir to heat supply network heat supply, and guarantee meets user's heat demand, when turbine exhaust heat not
When can meet heat demand, by heat reservoir additional heat.
Furthermore when this programme implements, steam-turbine pressure, temperature can be monitored by temperature, pressure monitoring device
Degree, monitoring user-side heating network pressure, temperature, monitoring light field go out conductance hot oil temperature, pressure, and series of parameters value is used as
Judge that power generation, heat supply institute calorific requirement, control valve are opened, the switching of pipeline break-make implementation pattern.
Description of the drawings
It is further illustrated the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the system composition schematic diagram based on photo-thermal power generation co-generation unit in present example；
Fig. 2 is the schematic diagram based on photo-thermal power generation co-generation unit upper pipeline break-make in present example；
Fig. 3 is that multimedium heat exchanger structure sectional view is based in present example；
Fig. 4 is pattern automatic switchover system schematic diagram in present example.
In figure：
Solar energy light field -1；Conduction oil/fuse salt heat exchanger -2；High-temperature fusion salt holding vessel -3；
Low temperature molten salt holding vessel -4；Back pressure turbine steam generator -5；User side heating network -6；
Steam turbine -7；Oxygen-eliminating device -8；Generator feed pump -9；Heat supply network heat exchanger -10；
Temperature, pressure monitoring device -11,13,14,16,17；Electric T-shaped valve -12,15；
First passage -10.1；Second channel -10.2；Third channel -10.3.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
On the basis of solar heat power generation system scheme, being based further on fuse salt composition can carry out this programme accordingly
The heat reservoir of heat exchange, and the heat reservoir is introduced into solar heat power generation system.
The heat reservoir can be carried out with the heat transferring medium (such as conduction oil) of solar energy heat-collection field in solar heat power generation system
Heat exchange, efficiently stores solar energy optical-thermal for will be generated in solar heat power generation system；The heat reservoir can also be with the sun
Steam-turbine in energy heat generating system exchanges heat, in conduction oil heat, it is impossible to meet steam turbine power generation demand heats
When, heat release is carried out to it and ensures card steam exit pressure value stabilization, ensures that rotor speed is stablized.
Accordingly, in this programme in addition to solar energy heat-collection field heat transferring medium is made of conduction oil, fuse salt undertakes whole heat accumulations
System and with steam-turbine heat transferring medium, effectively solve the problems, such as that intermediate link excessively leads to thermal loss.
Furthermore the heat reservoir in this programme also in solar heat power generation system steam turbine coordinate, realize coupling to
Heat supply network heat supply solves the problems, such as electricity consumption and uses thermal mismatching.
For said program in specific implementation, for heat reservoir using double tanks heat transfer heat reservoirs, main includes being sequentially communicated
High-temperature fusion salt holding vessel, heat exchanger and low temperature molten salt holding vessel, heat exchange medium therein is by middle low temperature molten salt group
At.Wherein, the heat exchange in fuse salt and solar heat power generation system between the conduction oil of solar energy heat-collection field is completed by heat exchanger；
And two heat-exchanging loops are formed between high-temperature fusion salt holding vessel and low temperature molten salt holding vessel, it is respectively used to and heat supply network and solar energy
The steam-turbine of steam-electric power exchanges heat in heat generating system.
Accordingly, this programme will can be cut with common user with heat demand and power generation needs according to the hot output of solar energy heat-collection field
Heat-transfer working medium flow direction and flow are changed, user power utilization is taken into account and uses heat demand, realizes and takes into account power load and heat supply network thermic load
Cogeneration of heat and power.
As an example, this programme take into account the control process of the cogeneration of heat and power of power load and heat supply network thermic load such as
Under：
In the square thermal-arrest starting stage, the conduction oil of solar energy heat-collection field reaches steam turbine inlet steam heating temperature,
Conduction oil preferentially exchanges heat to steam turbine generator.
And work as conduction oil by light field continuous heating to relative to steam superheating, it is recycled to fuse salt heat exchanger and carries out heat accumulation.
Specifically, the conduction oil from solar energy field is delivered to heat reservoir heat exchanger, thermal energy is passed to from low-temperature storage tank
Fuse salt；Temperature is promoted after fuse salt heat exchange, is delivered in high temperature storage tank.
As a result, in solar radiation trough, the high-temperature fusion salt of high temperature storage tank is delivered to steam generator by heat reservoir
Heat exchanger continues to heat steam, ensures steam exit pressure value stabilization, ensures that rotor speed is stablized.It is low after heat release
Warm fuse salt will again return in low temperature molten salt holding vessel.
At the same time, the outlet vapor from steam turbine can be delivered to heat supply network and carry out direct heat transfer, the steam after heat exchange
As condensed water, steam generator can be back to after oxygen-eliminating device is handled；And when the outlet vapor of steam turbine carries out heat exchange generation
Shortage of heat when, then heat exchange is carried out to heat supply network using heat reservoir, realized to the supplement of heat supply network heat, guarantee user's heat
Demand.
On this basis, this programme can be realized by monitoring node temperature, pressure and automatically switch storage in specific implementation
Heat/Heat release mode solves the problems, such as user's heat, power demand automatic adjustment.
It is illustrated below by way of an application example for said program.
Referring to Fig. 1, the system based on photo-thermal power generation co-generation unit that this shown example provides forms example.
As seen from the figure, which contains solar energy light field 1, conduction oil/fuse salt heat exchanger 2, high temperature melting
Melt salt holding vessel 3, low temperature molten salt holding vessel 4, back pressure turbine steam generator 5, user side heating network 6, steam turbine
7, oxygen-eliminating device 8, generator feed pump 9, heat supply network heat exchanger 10.
Wherein, there is heat-transfer working medium conduction oil, there are two heat-exchanging loops for the solar energy light field 1 tool, divide in solar energy light field 1
It is not connected to back pressure turbine steam generator 5 and conduction oil/fuse salt heat exchanger 2.
High-temperature fusion salt holding vessel 3, conduction oil/fuse salt heat exchanger 2 and low temperature molten salt holding vessel 4 connect and compose double
Tank conducts heat heat reservoir, between the high-temperature fusion salt holding vessel 3 and low temperature molten salt holding vessel 4 in double tanks heat transfer heat reservoirs
There are two heat-exchanging loops for tool, are respectively connected to heat supply network heat exchanger 10 and back pressure turbine steam generator 5.
The steam inlet of back pressure turbine steam generator 5 and steam turbine 7 coordinates, the steam (vapor) outlet of steam turbine 7 with remove
Oxygen device 8 cooperatively forms heat-exchanging loop, is connected to heat supply network heat exchanger 10.
Oxygen-eliminating device 8 in system is connected to back pressure turbine steam generator 5 by generator feed pump 9；And heat supply network
Heat exchanger 10 carries out heat exchange with user side heating network 6.
The plate heat exchanger for supporting multimedium heat exchange can be used in heat supply network heat exchanger 10 in this system.
Referring to Fig. 3, which has parallel passage structure, has parallel 10.1 He of first passage
Second channel 10.2.Wherein, first passage 10.1 circulates fuse salt, 10.2 flowing steam of second channel, at third channel 10.3
Between the first, second channel, circulation medium is water；Each medium is not in contact with each other, high-temperature fusion salt and steam flow contrary, to
High-temperature fusion salt is set to be coupled with turbine exhaust heat steam to heat supply network heat supply.
On the basis of above system composed structure, several temperature, pressure monitoring devices and electricity is further arranged in this example
Dynamic triple valve carrys out system, and corresponding monitoring node is arranged in several temperature, pressure monitoring devices, such as monitor steam-turbine pressure,
Temperature, monitoring user-side heating network pressure, temperature, monitoring solar energy heat-collection field go out to flow heat exchange medium temperature, pressure；Thus lead to
Corresponding monitoring node temperature, pressure is crossed, controls electric T-shaped valve to realize the automatic switchover of system heat accumulation/Heat release mode, solves to use
Family heat, power demand regulation problem.
Referring to Fig. 2, temperature, pressure monitoring device 11 is arranged in this example on the heat-exchanging loop of solar energy light field 1, with monitoring
Light field goes out conductance hot oil temperature, pressure；Temperature, pressure monitoring device 13 is set on high-temperature fusion salt holding vessel 3, to monitor height
Temperature, the pressure of warm fuse salt holding vessel high temperature fuse salt；Temperature, pressure is set on low temperature molten salt holding vessel 4 and monitors dress
14 are set, to monitor the temperature, pressure of low temperature molten salt in low temperature molten salt holding vessel；Temperature is set in user side heating network 6
Pressure monitoring device 16 is spent, with monitoring user-side heating network pressure, temperature；It is set on back pressure turbine steam generator 5
Set temperature, pressure monitoring device 17, monitoring steam-turbine pressure, temperature.
Matched, electric T-shaped valve 12 is set between two heat-exchanging loops in solar energy light field 1, to control heat conduction
The flow direction and flow of oil；There are two heat-exchanging loops for tool between high-temperature fusion salt holding vessel 3 and low temperature molten salt holding vessel 4 simultaneously
Between be arranged electric T-shaped valve 15, to control the flow direction and flow of high-temperature fusion salt.
On this basis, the real time data that this system can be monitored according to temperature, pressure monitoring device 11,13,14,16,17,
To judge power generation, heat supply institute calorific requirement；It opens and/or closes by electric T-shaped valve 12 processed and/or electric T-shaped valve 15 again, it is right
Pipeline break-make implementation pattern switches, and then realizes and automatically switches heat accumulation/Heat release mode.
Thus the co-generation unit constituted user power utilization and uses heat demand using following working method to realize to take into account
Cogeneration of heat and power (referring to Fig. 4).
1, light field-conduction oil heat absorption heat release；
Solar energy light field absorbs solar energy heating conduction oil, is exchanged heat by conduction oil to remaining link relevant device.
2, conduction oil-steam generator heat exchange；
When heat conduction oil temperature is increased above steam turbine inlet steam temperature, by adjusting 12 opening state of electric T-shaped valve
Conduction oil is direct cycled to steam generator 5 and carries out heat exchange by state, and the conduction oil for discharging heat flows back by the road again, this
Method considerably increases the operation working hour of steam turbine power generation.
3, conduction oil-fuse salt heat exchange
Conduction oil is heated continuously, and is still had overheat with steam-turbine heat exchange, is adjusted 12 open state of electric T-shaped valve, will
Conduction oil be recycled to conduction oil fuse salt heat exchanger 2, at this time fuse salt will be heated, the heat transfer of release makes to fuse salt
Fuse salt temperature is increased to 390 DEG C, while the low temperature molten salt that heating is flowed out by low temperature molten salt holding vessel 4 by 290 DEG C, later
The high-temperature fusion salt heated enters high-temperature fusion salt holding vessel 3 and carries out heat storage.
4, fuse salt-steam generator heat exchange
When light field collection thermal energy power reduces, the decline of conduction oil temperature is not enough to heating high temperature steam.High-temperature fusion salt enters steaming
Vapour generator 5 heats steam, and the low temperature molten salt after heat exchange enters low temperature molten salt holding vessel 4.
5, steam turbine-heat supply network heat exchange
Since steam turbine 7 is run by electric load mode, steam turbine is run under governor control, by maintaining exhaust pressure
Power is stablized, to make rotating speed in rating number.Steam exhaust-gas accesses heat supply network at this time, exchanges heat with heat supply network heat exchanger 10, exchanges heat
Condensed water afterwards is delivered to steam generator 5 after being handled by oxygen-eliminating device 8 by feed pump 9.The condensed water of reflux cannot meet
Steam oven water, small pump, which is opened, at this time carries out moisturizing.
6, fuse salt-heat supply network heat exchange
Since steam turbine 7 is run by electric load mode, steam inlet is changed according to electrical load requirement.Therefore work as
Electricity consumption hour, turbine exhaust heat cannot meet heat demand, at this point, electric T-shaped valve 15 is adjusted, high-temperature fusion salt is defeated
It send to 10 additional heat of heat supply network heat exchanger.After heat exchange, low temperature molten salt is back to low temperature molten salt holding vessel.
Therefore this system ensure that and be fluctuated in solar radiation using fuse salt as double tank heat reservoirs of medium, light field
When heat-collecting capacity deficiency, steam turbine and heat supply network use heat demand.Particularly, this system realizes the cascade utilization of energy, by back pressure
Formula steam turbine outlet vapor is recycled to heat supply network heat exchanger, realizes and utilizes maximization with the turbine exhaust heat to generate electricity as target load,
When for generated energy low ebb, heat supply network user demand heat is supplemented using molten salt heat storage system, reaches and meets user's heat demand.
In conclusion the system effectively realizes the compound coproduction of thermoelectricity, user power utilization, the dual satisfaction with heat demand are realized.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (11)
1. being based on photo-thermal power generation co-generation unit, which is characterized in that including：Solar energy thermal-power-generating subsystem and fuse salt heat accumulation
Subsystem, the heat transferring medium that the fuse salt heat accumulation subsystem can respectively with solar energy heat-collection field in solar energy thermal-power-generating subsystem
It exchanges heat, and exchanges heat with the steam-turbine of steam-electric power in solar energy thermal-power-generating subsystem；And the melting
Salt heat accumulation subsystem is coupled with the steam turbine in solar energy thermal-power-generating subsystem to heat supply network heat supply.
2. according to claim 1 be based on photo-thermal power generation co-generation unit, which is characterized in that fuse salt heat accumulation
System mainly include high-temperature fusion salt holding vessel, heat exchanger, low temperature molten salt holding vessel and the fuse salt as heat transferring medium,
The low temperature molten salt holding vessel is connected to high-temperature fusion salt holding vessel by heat exchanger.
3. according to claim 2 be based on photo-thermal power generation co-generation unit, which is characterized in that fuse salt heat accumulation
System completes the heat exchange in fuse salt and solar energy thermal-power-generating subsystem between the heat transferring medium of solar energy heat-collection field by heat exchanger,
Two heat-exchanging loops are formed between high-temperature fusion salt holding vessel and low temperature molten salt holding vessel in the fuse salt heat accumulation subsystem,
It is respectively used to exchange heat with the steam-turbine of steam-electric power in heat supply network and solar energy thermal-power-generating subsystem.
4. according to claim 1 be based on photo-thermal power generation co-generation unit, which is characterized in that the co-generation system also wraps
Several regulating devices are included, to control heat accumulation/Heat release mode of fuse salt heat accumulation subsystem.
5. according to claim 1 be based on photo-thermal power generation co-generation unit, which is characterized in that in the co-generation system also
Including several temperature, pressure monitoring devices, monitoring steam-turbine pressure, temperature, monitoring user-side heating network pressure, temperature
Degree, monitoring solar energy heat-collection field go out to flow heat exchange medium temperature, pressure, can be judged by the parameter detected heat-transfer working medium flow direction and
Operating mode.
6. it is according to claim 1 be based on photo-thermal power generation co-generation unit, which is characterized in that in the co-generation system
The plate heat exchanger for supporting multimedium heat exchange can be used in heat supply network side, and the multimedium plate heat exchanger has parallel channels knot
Structure, first passage circulation fuse salt, second channel flowing steam, third channel are between the first, second channel, circulation medium
For water；Each medium is not in contact with each other, and high-temperature fusion salt and steam flow contrary make high-temperature fusion salt be coupled with turbine exhaust heat steam
To heat supply network heat supply.
7. be based on photo-thermal power generation cogeneration method, which is characterized in that the mode based on fuse salt heat accumulation respectively with solar heat
The heat transferring medium of solar energy heat-collection field exchanges heat in power generation sub-system, and with steam-electric power in solar energy thermal-power-generating subsystem
Steam-turbine exchange heat；And it is coupled to heat with the steam turbine in solar energy thermal-power-generating subsystem by fuse salt heat accumulation
Net heat supply.
8. according to claim 7 be based on photo-thermal power generation cogeneration method, which is characterized in that in the co-production,
In the solar energy heat-collection field thermal-arrest starting stage, detect that the heat transferring medium in solar energy heat-collection field reaches steam turbine inlet steam
Heating temperature requirement, heat transferring medium preferentially exchange heat to steam turbine generator；
When the heat transferring medium in solar energy heat-collection field by light field continuous heating to relative to steam superheating, detect heat-exchange working medium temperature
Degree is rich, then is recycled to fuse salt heat accumulation subsystem and carries out heat exchange heat accumulation.
9. according to claim 7 be based on photo-thermal power generation cogeneration method, which is characterized in that in the co-production,
When solar energy heat-collection field collection thermal energy power reduces, that is, when detecting that light field heat exchange medium temperature drops to set temperature, fuse salt
Heat accumulation subsystem conveys high-temperature fusion salt to steam generator heat exchanger, continues to heat steam, ensures steam (vapor) outlet pressure
Force value stabilization；Low temperature molten salt after heat release will again return in fuse salt heat accumulation subsystem.
10. according to claim 7 be based on photo-thermal power generation cogeneration method, which is characterized in that in the co-production
Outlet vapor from steam turbine is transported to heat supply network and carries out direct heat transfer；When the outlet vapor of steam turbine carries out the heat that heat is changed
It when amount is insufficient, monitors that outlet vapor pressure is less than heat supply setting value, then opens heat reservoir valve, utilize fuse salt heat accumulation
System exchanges heat with heat supply network.
11. according to claim 7 be based on photo-thermal power generation cogeneration method, which is characterized in that the co-production root
According to the hot output and common user heat demand and power generation needs of solar energy heat-collection field, monitoring key parameter composition automatic adjustment system
System automatically switches operating mode, changes heat-transfer working medium flow direction and flow.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405289A (en) * | 2018-11-30 | 2019-03-01 | 碧海舟（北京）节能环保装备有限公司 | A kind of conduction oil energy storage heat-exchange system and its application method |
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| CN109405289A (en) * | 2018-11-30 | 2019-03-01 | 碧海舟（北京）节能环保装备有限公司 | A kind of conduction oil energy storage heat-exchange system and its application method |
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| CN110173902A (en) * | 2019-04-30 | 2019-08-27 | 云南大学 | A kind of cogeneration system of combination vacuum tube and flat-plate solar collector |
| CN114076416A (en) * | 2021-11-18 | 2022-02-22 | 西安西热节能技术有限公司 | Thermoelectric comprehensive energy storage system for solar-thermal power generation and molten salt combined hydrogen production |
| CN114076416B (en) * | 2021-11-18 | 2024-04-26 | 西安西热节能技术有限公司 | Thermoelectric integrated energy storage system for photo-thermal power generation and hydrogen production by combining molten salt |
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