CN109826682A - A kind of integrated-type energy supplying system of achievable supply of cooling, heating and electrical powers - Google Patents
A kind of integrated-type energy supplying system of achievable supply of cooling, heating and electrical powers Download PDFInfo
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- CN109826682A CN109826682A CN201910003733.3A CN201910003733A CN109826682A CN 109826682 A CN109826682 A CN 109826682A CN 201910003733 A CN201910003733 A CN 201910003733A CN 109826682 A CN109826682 A CN 109826682A
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Abstract
The present invention relates to the integrated-type energy supplying systems of a kind of carbon dioxide energy storage of achievable supply of cooling, heating and electrical powers and Organic Rankine Cycle.The system completes the conversion and storage of electric energy to thermal energy, cold energy and pressure carbon dioxide energy using electric power more than needed in energy storage stage, it can be according to user's needs releasing the energy stage, electric energy supply is completed using carbon dioxide expanded energy, Organic Rankine Cycle etc. released, heat accumulation, cold storage unit is utilized to complete the heat of user, cold energy supply.Deliverability while to improve hot and cold to user, electric, system also uses the cold energy of LNG, and carries out cascade utilization to its cold energy.The system can realize the integrated and use in conjunction of energy-storage system and organic rankine cycle system using renewable energy as power source, in energy supply stage non-pollutant discharge, have good energy-saving benefit and environmental benefit.
Description
Technical field
The invention belongs to supply of cooling, heating and electrical powers technology and technical field of energy storage, are related to a kind of integrating for achievable supply of cooling, heating and electrical powers
Type energy supplying system is specifically carbon dioxide energy storage and the Organic Rankine Cycle integrated-type of a kind of achievable supply of cooling, heating and electrical powers
Energy supplying system.
Background technique
Increasingly depleted with traditional energy, requirement of the today's society to using energy source is higher and higher.How the energy is improved
Utilization efficiency, improve the energy utilize quality, realize the energy using diversification become global concern focal issue.In crowd
In more energy utilization patterns, supply of cooling, heating and electrical powers (i.e. CCHP, Combined Cooling, Heating and Power) mode
It is considered as a kind of significant energy utilizing method, the utilization efficiency to the energy can be promoted to greatest extent, meet people
For different type energy (hot and cold, electric) demand, therefore the extensive concern by domestic and international experts and scholars.
Conventional supply of cooling, heating and electrical powers mode drives gas turbine, micro turbine or interior mainly using natural gas as main fuel
The operation of the fuel gas generations equipment such as fuel engine power generation machine, the electricity needs of the power supply user of generation are discharged remaining after system power generation
Heat passes through waste heat recovery utilizing equipment to user's heat supply, cooling supply.It can be improved the one of whole system using supply of cooling, heating and electrical powers mode
Secondary energy utilization rate, realizes the cascade utilization of the energy, therefore has very important significance.
It is one kind of physics energy storage technology using carbon dioxide as the energy-storage system of working medium, the system is using carbon dioxide as work
Matter compresses carbon dioxide using electric power more than needed, converts electrical energy into cold and hot energy and pressure energy；It is releasing the energy stage, then
Electric energy is converted by these energy externally to discharge.Therefore, carbon dioxide energy-storage system can effectively reduce the waste of electric energy, stablize electricity
The equilibrium of supply and demand of energy.
Organic Rankine Cycle (ORC, full name Organic Rankine Cycle) is to convert electric energy for thermal energy, cold energy
The common circulation of one kind.It has higher efficiency to the utilization of lower temperature heat source, therefore can effectively reduce energy loss, improve energy
The utilization efficiency in source.
LNG (Liquefied Natural Gas) is one of currently used new energy, it is under normal pressure in liquid form
Storage, temperature is at -160 DEG C or so.The utilization of the huge cooling capacity contained to it is had ignored to the use of LNG at present, therefore is caused
Energy dissipation.Improve the cascade utilization to LNG cold energy, it has also become one of important goal of energy field.
Summary of the invention
It is in view of the above drawbacks of the prior art and insufficient, energy is utilized for higher efficiency, realizes the more of using energy source
Sample, the present invention is based on carbon dioxide energy storage technology and Organic Rankine Cycle technology, in conjunction with the cascade utilization theory of LNG cold energy,
It is proposed carbon dioxide energy storage and the Organic Rankine Cycle integrated-type energy supplying system of a kind of achievable supply of cooling, heating and electrical powers.The system is being stored up
Electric power more than needed can be utilized the stage, converting electrical energy into thermal energy, cold energy and pressure can be carried out storage, the energy stage released, according to user
It needs, the supply that number of ways realizes cold energy, thermal energy and electric energy can be used, it is ensured that the efficient utilization of energy.
The present invention is adopted the technical scheme that by its technical problem of solution:
A kind of carbon dioxide energy storage of achievable supply of cooling, heating and electrical powers and the integrated-type energy supplying system of Organic Rankine Cycle, including
Carbon dioxide energy storage and release can generator unit, Organic Rankine Cycle generator unit, heating unit, cooling supply unit, LNG conveying it is single
Member, which is characterized in that
-- the carbon dioxide energy storage and release can generator unit, including low pressure CO 2 storage tank, cold-storage heat-exchanger, dioxy
Change carbon compressor, regenerative heat exchanger, high-pressure carbon dioxide storage tank, carbon dioxide expanded machine, heat utilization heat exchanger, the titanium dioxide
Carbon expanding machine one energy-storage system generator of transmission connection, in which:
The outlet of the low pressure CO 2 storage tank is by pipeline successively through the carbon dioxide cold side of the cold-storage heat-exchanger
Pipeline, carbon-dioxide gas compressor, regenerative heat exchanger carbon dioxide hot side pipeline and the high-pressure carbon dioxide storage tank entrance
It is connected；
The outlet of the high-pressure carbon dioxide storage tank is by pipeline successively through the carbon dioxide cold side of the regenerative heat exchanger
Pipeline, carbon dioxide expanded machine, the carbon dioxide hot side pipeline of heat utilization heat exchanger, cold-storage heat-exchanger carbon dioxide hot side pipe
Road is connected with the entrance of the low pressure CO 2 storage tank；
-- the Organic Rankine Cycle generator unit, including ORC storage tank, working medium pump, ORC expanding machine, ORC heat exchanger, institute
State ORC expanding machine one ORC generator of transmission connection, in which: the outlet of the ORC storage tank is by pipeline successively through the working medium
Pump, the working medium cold side of heat utilization heat exchanger, ORC expanding machine, ORC heat exchanger working medium hot side after entrance with the ORC storage tank
It is connected；
-- the heating unit, including heat user unit, in which: the outlet of the heat user unit passes through described in pipeline warp
It is connected after user's lateral line of heat utilization heat exchanger with the entrance of the heat user unit；
-- the cooling supply unit, including cold subscriber unit, in which: the outlet of the cold subscriber unit passes through described in pipeline warp
It is connected after user's lateral line of cold-storage heat-exchanger with the entrance of the cold subscriber unit；
-- the LNG sending unit, including LNG tank, LNG kinetic pump, LNG user terminal, in which: the outlet of the LNG tank
It is connected by pipeline with the entrance of LNG kinetic pump；The side LNG of ORC heat exchanger of the outlet of the LNG kinetic pump by parallel connection
It is connected after the bypass line of cold side pipeline and ORC heat exchanger with the entrance of the side LNG of the cold-storage heat-exchanger；The LNG is used
The entrance at family end is connected with the outlet of the side LNG of the cold-storage heat-exchanger.
Preferably, low pressure CO 2 reservoir inlet pressure stabilizing is provided on the entrance pipe of the low pressure CO 2 storage tank
Device, low pressure CO 2 reservoir inlet switch valve；Low pressure dioxy is provided on the export pipeline of the low pressure CO 2 storage tank
Change carbon outlet switch valve, low pressure CO 2 outlet voltage-stablizer.
Preferably, high-pressure carbon dioxide reservoir inlet switch is provided on the entrance pipe of the high-pressure carbon dioxide storage tank
Valve, high-pressure carbon dioxide reservoir inlet voltage-stablizer；High pressure dioxy is provided on the export pipeline of the high-pressure carbon dioxide storage tank
Change carbon outlet switch valve, high-pressure carbon dioxide outlet voltage-stablizer.
Preferably, on the connecting pipeline between the ORC outlet and the working medium pump intake, it is additionally provided with ORC storage
Tank gate out switch valve；On connecting pipeline between the ORC reservoir inlet and the ORC heat exchanger working medium hot side outlet, also set
It is equipped with ORC reservoir inlet switch valve.
Preferably, LNG voltage-stablizer is provided on the entrance pipe of the side LNG of the cold-storage heat-exchanger.
Preferably, on the connecting pipeline between the outlet and the entrance of the side ORC heat exchanger LNG of the LNG kinetic pump,
It is provided with ORC heat exchanger cold side input port switch valve；ORC heat exchanger cold side bypass is provided on the ORC heat exchanger bypass pipeline
Switch valve.
Preferably, it is provided with heat user unit on the export pipeline of the heat user unit and is used for flowing switch valve, the heat
Heat user unit heating switch valve is provided on the entrance pipe of family unit.
Preferably, be provided on the export pipeline of the cold subscriber unit cold subscriber unit for flow switch valve, it is described colod-application
Cold subscriber unit cooling supply switch valve is provided on the entrance pipe of family unit.
Preferably, the carbon dioxide expanded machine is connected by shaft coupling with energy-storage system generator, the ORC expansion
Machine is connected by shaft coupling with the ORC generator.
Preferably, the carbon-dioxide gas compressor, working medium pump, LNG kinetic pump are respectively connected with motor.
From the above technical scheme, the carbon dioxide energy storage of achievable supply of cooling, heating and electrical powers of the invention is followed with organic Rankine
The integrated-type energy supplying system of ring, technological merit is:
1, it the present invention is based on the use in conjunction to carbon dioxide energy-storage system and organic rankine cycle system, realizes to richness
The efficient storage and trans-utilization of remaining electric energy complete supply while to cold energy, thermal energy and electric energy, reduce the wave of the energy
Take；The integrated-type energy supplying system can be adjusted flexibly energy supply strategy, change cold based on user to the different demands amount of cool and thermal power simultaneously
The function status of thermoelectricity, more targetedly completes supply of cooling, heating and electrical powers.
2, the present invention has carried out reasonable utilization to the cold energy of LNG, avoids the waste of LNG cold energy, while based on step benefit
Strategy improves the utilization efficiency to LNG cold energy, and the using energy source of LNG is maximized.
3, the present invention has both the function of energy stores on the basis of realizing high efficiency, multipath energy supply, can be with wind
The renewable energy such as energy, solar energy, geothermal energy joint utilizes, and is a kind of novel environmentally friendly, energy-saving multifunction energy supplying system.
Detailed description of the invention
Fig. 1 is that the carbon dioxide energy storage of achievable supply of cooling, heating and electrical powers of the invention and the integrated-type of Organic Rankine Cycle energize
System schematic.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
As shown in Figure 1, the carbon dioxide energy storage of achievable supply of cooling, heating and electrical powers of the invention and integrating for Organic Rankine Cycle
Type energy supplying system, by low pressure CO 2 storage tank 1, low pressure CO 2 outlet switch valve 2, low pressure CO 2 storage tank goes out
Mouth voltage-stablizer 3, cold-storage heat-exchanger 4, carbon-dioxide gas compressor 5, motor 6, regenerative heat exchanger 7, high-pressure carbon dioxide storage tank enter
Mouth voltage-stablizer 8, high-pressure carbon dioxide reservoir inlet switch valve 9, high-pressure carbon dioxide storage tank 10, high-pressure carbon dioxide outlet
Switch valve 11, high-pressure carbon dioxide outlet voltage-stablizer 12, carbon dioxide expanded machine 13, energy-storage system generator 14, heat benefit
With heat exchanger 15, low pressure CO 2 reservoir inlet voltage-stablizer 16, low pressure CO 2 reservoir inlet switch valve 17, ORC storage tank
18, ORC outlet switch valves 19, working medium pump 20, ORC expanding machine 21, ORC generator 22, ORC heat exchanger 23, ORC storage tank enter
Mouth switch valve 24, LNG tank 25, LNG kinetic pump 26, ORC heat exchanger cold side input port switch valve 27, ORC heat exchanger cold side bypass are opened
Valve 28 is closed, LNG voltage-stablizer 29, LNG user side 30, heat user unit 31, heat user unit is for flowing switch valve 32, heat user unit
Heat supply switch valve 33, cold subscriber unit 34, cold subscriber unit is for flowing the components such as switch valve 35, cold subscriber unit cooling supply switch valve 36
Composition.
Specifically, the integrated-type of the carbon dioxide energy storage of achievable supply of cooling, heating and electrical powers of the invention and Organic Rankine Cycle supplies
Energy system can be divided into carbon dioxide energy storage and release energy generator unit, Organic Rankine Cycle generator unit, heating unit, cooling supply
Unit and LNG supply unit.
Carbon dioxide energy storage and release can generator unit, including by the sequentially connected low pressure CO 2 storage tank 1 of pipeline, store
Cold heat exchanger 4, carbon-dioxide gas compressor 5, regenerative heat exchanger 7, high-pressure carbon dioxide storage tank 10, carbon dioxide expanded machine 13, heat
Utilize heat exchanger 15, one motor 6 of transmission connection of carbon-dioxide gas compressor 5, one energy storage of the carbon dioxide expanded transmission connection of machine 13
System generator 14, in which: the outlet of low pressure CO 2 storage tank 2 passes through the carbon dioxide cold side of pipeline and cold-storage heat-exchanger 4
The entrance of pipeline is connected；The outlet of the carbon dioxide cold side pipeline of cold-storage heat-exchanger 4 passes through pipeline and carbon-dioxide gas compressor 5
Entrance be connected；Outlet the entering by pipeline and the carbon dioxide hot side pipeline of regenerative heat exchanger 7 of carbon-dioxide gas compressor 5
Mouth is connected；Outlet the entering by pipeline and high-pressure carbon dioxide storage tank 10 of the carbon dioxide hot side pipeline of regenerative heat exchanger 7
Mouth is connected, and high-pressure carbon dioxide reservoir inlet voltage-stablizer 8, high-pressure carbon dioxide are provided on connecting pipeline between the two
Reservoir inlet switch valve 9；The outlet of the entrance and high-pressure carbon dioxide storage tank 10 of the carbon dioxide cold side pipeline of regenerative heat exchanger 7
It is connected, and is provided with high-pressure carbon dioxide outlet switch valve 11, high-pressure carbon dioxide on connecting pipeline between the two
Outlet voltage-stablizer 12；The entrance of carbon dioxide expanded machine 13 is managed by the carbon dioxide cold side of pipeline and regenerative heat exchanger 7
The outlet on road is connected；The outlet of carbon dioxide expanded machine 13 is connected by pipeline with the hot side entrance of heat utilization heat exchanger 15
It is logical；The hot side outlet of heat utilization heat exchanger 15 is connected by pipeline with the entrance of the carbon dioxide hot side pipeline of cold-storage heat-exchanger 4
It is logical；The entrance of low pressure CO 2 storage tank 1 is connected by pipeline with the outlet of the carbon dioxide hot side pipeline of cold-storage heat-exchanger 4
It is logical, and cross over pipe road between the two is provided with low pressure CO 2 reservoir inlet voltage-stablizer 16, low pressure CO 2 storage tank
Entry switch valve 17.
Organic Rankine Cycle generator unit, including pass through the sequentially connected ORC storage tank 18 of pipeline, working medium pump 20, ORC expansion
Machine 21, ORC heat exchanger 23, the one ORC generator 22 of transmission connection of ORC expanding machine 21, in which: the outlet of ORC storage tank 18 passes through pipeline
It is connected with the entrance of working medium pump 20；The outlet of working medium pump 20 is connected by pipeline with the cold side input port of heat utilization heat exchanger 15
It is logical；The cold side outlet port of heat utilization heat exchanger 15 is connected with the entrance of ORC expanding machine 21；The outlet of ORC expanding machine 21 passes through pipe
Road is connected with the hot working fluid side entrance of ORC heat exchanger 23；The working medium hot side outlet of ORC heat exchanger 23 is stored up by pipeline and ORC
The entrance of tank 18 is connected.On connecting pipeline between 20 entrance of outlet and working medium pump of ORC storage tank 18, it is additionally provided with ORC storage
Tank gate out switch valve 19；On connecting pipeline between the entrance of ORC storage tank 18 and the working medium hot side outlet of ORC heat exchanger 23, also
It is provided with ORC reservoir inlet switch valve 24.
Heating unit, including heat user unit 31, in which: the export pipeline and heat utilization heat exchanger 15 of heat user unit 31
The entrance of user's lateral line be connected；User's lateral line of the entrance pipe and heat utilization heat exchanger 15 of heat user unit 31
Outlet is connected.Communicating pipe between the export pipeline of heat user unit 31 and the user side inlet pipeline of heat utilization heat exchanger 15
On the road, heat user unit is provided with for flowing switch valve 32；The entrance pipe of heat user unit 31 and the use of heat utilization heat exchanger 15
On connecting pipeline between the side outlet pipeline of family, it is provided with heat user unit heating switch valve 33.
Cooling supply unit, including cold subscriber unit 34, in which: the export pipeline of cold subscriber unit 34 and cold-storage heat-exchanger 4
The entrance of user's lateral line is connected；The outlet of user's lateral line of the entrance pipe and cold-storage heat-exchanger 4 of cold subscriber unit 34
It is connected.On connecting pipeline between the export pipeline of cold subscriber unit 34 and the user side inlet pipeline of cold-storage heat-exchanger 4, if
Cold subscriber unit is equipped with for flowing switch valve 36；The entrance pipe of cold subscriber unit 34 and the user side outlet of cold-storage heat-exchanger 4
Cross over pipe road between road, is provided with cold subscriber unit cooling supply switch valve 35.
LNG sending unit, including LNG tank 25, LNG kinetic pump 26, LNG user terminal 30, in which: the outlet of LNG tank 25 is logical
Pipeline is crossed to be connected with the entrance of LNG kinetic pump 26；LNG kinetic pump 26 by the in parallel side heat exchanger LNG ORC cold side pipeline and
ORC heat exchanger bypass pipeline is connected with the side entrance the LNG pipeline of cold-storage heat-exchanger 4；The entrance of LNG user terminal 30 is changed with cold-storage
The LNG side outlet pipeline of hot device 4 is connected.Connecting pipeline between LNG kinetic pump 26 and the side entrance LNG of cold-storage heat-exchanger 4
On be additionally provided with LNG voltage-stablizer 29.Connection between the outlet of LNG kinetic pump 26 and the LNG lateral line entrance of ORC heat exchanger 23
ORC heat exchanger cold side input port switch valve 27 is additionally provided on pipeline；The bypass pipe of LNG kinetic pump 26 outlet and ORC heat exchanger 23
ORC heat exchanger cold side bypass cock valve 28 is additionally provided on connecting pipeline between the entrance of road.
The carbon dioxide energy storage of achievable supply of cooling, heating and electrical powers of the invention and the integrated-type energy supplying system of Organic Rankine Cycle,
Its working principle and specific operation process are as follows:
In energy storage stage, using electric power more than needed, which mainly completes cold energy storage, thermal energy storage and high pressure titanium dioxide
The storage of carbon working medium.
Firstly, low pressure CO 2 outlet switch valve 2, high-pressure carbon dioxide reservoir inlet switch valve 9 are opened.Low pressure
The liquid carbon dioxide that carbon dioxide storage tank 1 supplies low-temp low-pressure is being passed through by low pressure CO 2 outlet switch valve 2
After crossing the pressure adjusting of low pressure carbon dioxide storage tank outlet voltage-stablizer 3, managed into the carbon dioxide side cold side of cold-storage heat-exchanger 4
Road.Cool storage medium is provided in cold-storage heat-exchanger 4.The liquid carbon dioxide of low-temp low-pressure in the pipeline of cold side with the temperature outside pipe
Higher cool storage medium carries out heat exchange, and temperature increases, corresponding, and the cool storage medium in cold-storage heat-exchanger 4 is cooled, temperature
It reduces.Cold energy entrained by liquid carbon dioxide is stored as a result,.
After heat exchange heating, liquid carbon dioxide becomes gas phase, into carbon-dioxide gas compressor 5.Electric power more than needed drives
Dynamic motor 6 works, and motor drives carbon-dioxide gas compressor 5 to compress gas phase carbon dioxide.After compressing, dioxy
Change carbon pressure rise, temperature increases, and subsequently enters the hot side pipeline of regenerative heat exchanger 7.Accumulation of heat Jie is provided in regenerative heat exchanger 7
Matter.The higher carbon dioxide of temperature carries out heat with the lower heat storage medium of temperature and exchanges, and carbon dioxide temperature reduces, and accumulation of heat is situated between
Matter temperature increases, and the heat of carbon dioxide is stored in heat storage medium.Carbon dioxide after exchanging heat becomes liquid phase, through excessively high
After pressing the pressure of carbon dioxide storage tank entrance voltage-stablizer 8 to stablize, via entering after high-pressure carbon dioxide reservoir inlet switch valve 9
It is stored in high-pressure carbon dioxide storage tank 10.So far, energy storage stage terminates.
It is releasing the energy stage, thermal energy, cold energy of the system using storage are completed cold in conjunction with the cold energy of Organic Rankine Cycle and LNG
Cogeneration.According to user to the difference of hot and cold electricity demanding amount, different cool and thermal power powered modes can be used.
Under the hot and cold of routine, electricity supply mode, supply of cooling, heating and electrical powers can be completed merely with carbon dioxide energy storing-releasing unit.
Firstly, high-pressure carbon dioxide outlet switch valve 11, low pressure CO 2 reservoir inlet switch valve 17 are opened, high pressure titanium dioxide
The high-pressure carbon dioxide of the release storage of carbon storage tank 10.High-pressure carbon dioxide passes through high-pressure carbon dioxide outlet switch valve 11
Afterwards, then via high-pressure carbon dioxide outlet voltage-stablizer 12 pressure adjusting is carried out, into the cold side pipeline of regenerative heat exchanger 7.
Carbon dioxide carries out heat with heat storage medium in the pipeline of cold side and exchanges, and absorbs heat, and temperature increases.Heat storage medium release heat
Amount, temperature reduce, the original state of replying state energy storage stage.Carbon dioxide after heating becomes gas phase, into titanium dioxide
Carbon expanding machine 13 carries out expansion work, and carbon dioxide expanded machine 13 drives energy-storage system generator 14 externally to generate electricity.
Since the carbon dioxide temperature after expansion is higher, carbon dioxide initially enters the hot side pipe of heat utilization heat exchanger 15
Road is provided with heat storage medium, the waste heat of heat storage medium absorbing carbon dioxide in heat utilization heat exchanger 15, and temperature increases, titanium dioxide
Carbon emissions heat, temperature reduce.After exchanging heat, carbon dioxide enters the carbon dioxide side hot side pipeline of cold-storage heat-exchanger 4,
Wherein heat is carried out with cool storage medium to exchange.Cool storage medium temperature is lower, and temperature increases after absorbing heat, replying state to energy storage
The original state in stage.After exchanging heat, temperature reduces carbon dioxide, is completely liquid phase by gas phase conversion, then passes through low pressure
It is low via entering after low pressure CO 2 reservoir inlet switch valve 17 after the pressure of carbon dioxide storage tank entrance voltage-stablizer 16 is adjusted
Recycling storage is carried out in pressure carbon dioxide storage tank 1, prepares thermal energy storage process next time.
When heat user unit 31 has heat demand, heat user unit is switched for stream switch valve 32 and heat user unit heating
Valve 33 is opened, and heating medium enters the heat user cell side of heat utilization heat exchanger 15 after heat user unit is for stream switch valve 32
Cold side pipeline.In heat utilization heat exchanger 15, heating medium carries out heat with heat storage medium and exchanges, again via heat after absorption heat
Heat user unit 31 is returned to after subscriber unit heat supply switch valve 33, completes heat supply.According to user demand, heating medium can be real
Now the continuous heat of heat user unit 31 is supplied.
When cold subscriber unit 34 has refrigeration requirement, cold subscriber unit is for stream switch valve 35 and cold subscriber unit for cold switch
Valve 36 is opened, and enters the colod-application family cell side heat of cold-storage heat-exchanger 4 after cold subscriber unit is for stream switch valve 35 for cold medium
Lateral line.In cold-storage heat-exchanger 4, heat is carried out with cool storage medium for cold medium and is exchanged, again via colod-application family after absorption cooling capacity
Cold subscriber unit 34 is returned to after unit cooling supply switch valve 36, completes cooling capacity supply.According to user demand, can be realized pair for cold medium
The supply of cold subscriber unit 34 continuous heat.
It when demand of the user to electricity is larger, needs additional electricity for seasonable, carbon dioxide energy storing-releasing can utilized
On the basis of unit realizes electricity supply, electricity supplement is realized in combination with Organic Rankine Cycle.At this point, ORC outlet is opened
It closes valve 19 to open, ORC storage tank 18 supplies the ORC cycle fluid of liquid, by ORC outlet switch valve 19, using working medium
After 20 boosting of pump, into the side the ORC cold side pipeline of heat utilization heat exchanger 15, after the heat for wherein absorbing heat storage medium storage,
Temperature increases, and becomes gas phase.ORC cycle fluid after heating enters in ORC expanding machine 21, and ORC expanding machine 21 drives ORC power generation
Machine 22 externally generates electricity, and realizes electricity supply.ORC cycle fluid after expansion work enters the hot side pipeline of ORC heat exchanger 23.
At this point, ORC heat exchanger cold side input port switch valve 27 is opened, ORC heat exchanger cold side bypass cock valve 28 is closed, and LNG tank 25 is simultaneously
The LNG for supplying low temperature, after the boosting of LNG kinetic pump 26, into the cold side pipeline of ORC heat exchanger 23.In ORC heat exchanger 23
In, the cooled cooling of ORC cycle fluid, and LNG heat absorption heating.Then, ORC reservoir inlet switch valve 24 is opened, cooling down
ORC cycle fluid afterwards becomes liquid completely, and ORC storage tank 18 is entered after ORC reservoir inlet switch valve 24 and is stored.After heating
LNG then further across LNG voltage-stablizer 29 pressure adjust after, into the side the LNG cold side pipeline of cold-storage heat-exchanger 4, into one
It supplies after step heat absorption heating to LNG user terminal 30.
It when demand of the user to cooling capacity is larger, needs additional cooling capacity for seasonable, carbon dioxide energy storing-releasing can utilized
On the basis of unit realizes cooling capacity supply, cooling capacity supplement is realized in combination with LNG supply unit.At this point, ORC heat exchanger cold side enters
Mouth switch valve 27 is closed, and ORC heat exchanger cold side bypass cock valve 28 is opened, and LNG tank 25 supplies the LNG of low-temp low-pressure, via LNG
After kinetic pump 26 boosts, by ORC heat exchanger cold side bypass cock valve 28, after adjusting pressure using LNG voltage-stablizer 29, enter
The LNG lateral line of cold-storage heat-exchanger 4.In the pipeline, the cool storage medium in the lower LNG of temperature and cold-storage heat-exchanger 4 is carried out
Heat exchange, LNG temperature increase, and cool storage medium temperature reduces.LNG after heating will supply LNG user terminal 30, and cool storage medium
The cooling capacity of storage will be taken away by the cooling supply medium from cold subscriber unit 34 and be supplied to cold subscriber unit 34.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of carbon dioxide energy storage of achievable supply of cooling, heating and electrical powers and the integrated-type energy supplying system of Organic Rankine Cycle, including two
Carbonoxide energy storage and release can generator unit, Organic Rankine Cycle generator unit, heating unit, cooling supply unit, LNG supply unit,
It is characterized in that,
-- the carbon dioxide energy storage and release can generator unit, including low pressure CO 2 storage tank, cold-storage heat-exchanger, carbon dioxide
Compressor, regenerative heat exchanger, high-pressure carbon dioxide storage tank, carbon dioxide expanded machine, heat utilization heat exchanger, the carbon dioxide are swollen
One energy-storage system generator of swollen machine transmission connection, in which:
The low pressure CO 2 storage tank outlet by pipeline successively the carbon dioxide cold side pipeline through the cold-storage heat-exchanger,
Carbon-dioxide gas compressor, regenerative heat exchanger carbon dioxide hot side pipeline be connected with the entrance of the high-pressure carbon dioxide storage tank
It is logical；
The high-pressure carbon dioxide storage tank outlet by pipeline successively the carbon dioxide cold side pipeline through the regenerative heat exchanger,
Carbon dioxide expanded machine, the carbon dioxide hot side pipeline of heat utilization heat exchanger, cold-storage heat-exchanger carbon dioxide hot side pipeline with
The entrance of the low pressure CO 2 storage tank is connected；
-- the Organic Rankine Cycle generator unit, including ORC storage tank, working medium pump, ORC expanding machine, ORC heat exchanger, the ORC
Expanding machine one ORC generator of transmission connection, in which: the outlet of the ORC storage tank is by pipeline successively through the working medium pump, heat benefit
With the working medium cold side of heat exchanger, ORC expanding machine, ORC heat exchanger working medium hot side after be connected with the entrance of the ORC storage tank；
-- the heating unit, including heat user unit, in which: the outlet of the heat user unit is by pipeline through the heat benefit
It is connected with after user's lateral line of heat exchanger with the entrance of the heat user unit；
-- the cooling supply unit, including cold subscriber unit, in which: the outlet of the cold subscriber unit is by pipeline through the cold-storage
It is connected after user's lateral line of heat exchanger with the entrance of the cold subscriber unit；
-- the LNG sending unit, including LNG tank, LNG kinetic pump, LNG user terminal, in which: the outlet of the LNG tank passes through
Pipeline is connected with the entrance of LNG kinetic pump；The side the LNG cold side of ORC heat exchanger of the outlet of the LNG kinetic pump by parallel connection
It is connected after the bypass line of pipeline and ORC heat exchanger with the entrance of the side LNG of the cold-storage heat-exchanger；The LNG user terminal
Entrance be connected with the outlet of the side LNG of the cold-storage heat-exchanger.
2. the integrated-type energy supplying system according to the claims, which is characterized in that the low pressure CO 2 storage tank
Low pressure CO 2 reservoir inlet voltage-stablizer, low pressure CO 2 reservoir inlet switch valve are provided on entrance pipe；It is described low
It presses and is provided with low pressure CO 2 outlet switch valve on the export pipeline of carbon dioxide storage tank, low pressure CO 2 storage tank goes out
Mouth voltage-stablizer.
3. the integrated-type energy supplying system according to the claims, which is characterized in that the high-pressure carbon dioxide storage tank
High-pressure carbon dioxide reservoir inlet switch valve, high-pressure carbon dioxide reservoir inlet voltage-stablizer are provided on entrance pipe；The height
It presses and is provided with high-pressure carbon dioxide outlet switch valve on the export pipeline of carbon dioxide storage tank, high-pressure carbon dioxide storage tank goes out
Mouth voltage-stablizer.
4. the integrated-type energy supplying system according to the claims, which is characterized in that the ORC outlet and the work
On connecting pipeline between matter pump intake, it is additionally provided with ORC outlet switch valve；The ORC reservoir inlet is changed with the ORC
On connecting pipeline between hot device working medium hot side outlet, it is additionally provided with ORC reservoir inlet switch valve.
5. the integrated-type energy supplying system according to the claims, which is characterized in that the side LNG of the cold-storage heat-exchanger
LNG voltage-stablizer is provided on entrance pipe.
6. the integrated-type energy supplying system according to the claims, which is characterized in that the outlet of the LNG kinetic pump and institute
It states on the connecting pipeline between the entrance of the side ORC heat exchanger LNG, is provided with ORC heat exchanger cold side input port switch valve；The ORC
ORC heat exchanger cold side bypass cock valve is provided on heat exchanger bypass pipeline.
7. the integrated-type energy supplying system according to the claims, which is characterized in that the outlet of the heat user unit
Road is provided with heat user unit for flowing switch valve, is provided with heat user unit heating on the entrance pipe of the heat user unit
Switch valve.
8. the integrated-type energy supplying system according to the claims, which is characterized in that the outlet of the cold subscriber unit
Road is provided with cold subscriber unit for flowing switch valve, is provided with cold subscriber unit cooling supply on the entrance pipe of the cold subscriber unit
Switch valve.
9. the integrated-type energy supplying system according to the claims, which is characterized in that the carbon dioxide expanded machine passes through
Shaft coupling is connected with energy-storage system generator, and the ORC expanding machine is connected by shaft coupling with the ORC generator.
10. the integrated-type energy supplying system according to the claims, which is characterized in that the carbon-dioxide gas compressor, work
Matter pump, LNG kinetic pump are respectively connected with motor.
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