CN114251950A - Thermal power generation and energy storage container combined system - Google Patents
Thermal power generation and energy storage container combined system Download PDFInfo
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- CN114251950A CN114251950A CN202011009014.1A CN202011009014A CN114251950A CN 114251950 A CN114251950 A CN 114251950A CN 202011009014 A CN202011009014 A CN 202011009014A CN 114251950 A CN114251950 A CN 114251950A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 171
- 238000010248 power generation Methods 0.000 title claims abstract description 82
- 238000001816 cooling Methods 0.000 claims abstract description 91
- 239000012530 fluid Substances 0.000 claims abstract description 66
- 239000002918 waste heat Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B11/00—Controlling arrangements with features specially adapted for condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
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Abstract
The invention provides a combined system of thermal power generation and an energy storage container. The fluid cooled in the cooling tower can be used for cooling thermal power generation equipment and cooling energy storage batteries in the energy storage container; the fluid with certain waste heat after flowing through the thermal power generation equipment can also heat the energy storage battery in the energy storage container. The combined system of the thermal power generation and the energy storage container can realize multi-energy complementation to a certain extent, fully utilize waste heat resources of a power plant, avoid ineffective dissipation of heat energy and greatly save energy.
Description
Technical Field
The invention relates to the field of batteries, in particular to a combined system of a thermal power generation and energy storage container.
Background
Frequency modulation is an important component in a thermal power generation system, a generator set needs to continuously adjust output to respond to the change of the power grid frequency, and long-term frequency modulation task can affect the service life of the generator set, the power generation cost and the power quality. With the progress of energy storage technology, the utilization of large-scale energy storage devices to assist thermal power frequency modulation becomes a current research hotspot. The lithium ion battery energy storage system can bear high-power pulse type charging and discharging conditions in the frequency modulation process, and has the advantages of high energy density, low operation cost, huge profit potential and the like, so that the lithium ion battery energy storage system has good economic benefits and market prospects.
Due to the influence of electrochemical reaction inside the lithium ion battery, the optimal use temperature range of the energy storage power station is 0-45 ℃, and therefore a battery thermal management system must be arranged in the use process. When the battery heats seriously, the cooling system cools the battery, and when the external environment temperature is too low, the heating system heats the battery, thereby fully ensuring the cycle performance and the safety performance of the battery. However, the thermal management system also needs to consume energy in the operation process, and the energy storage efficiency and the benefit of the frequency modulation energy storage power station are influenced to a certain extent.
A large water cooling unit is required to be arranged in the thermal power generation system, devices such as a condenser and the like are cooled by circulating cooling water, and the temperature of the circulating water after passing through the condenser is increased to 40-60 ℃. In this case, the low-grade heat in the circulating water is difficult to recycle, and the heat can be discharged to the air only through the cooling tower, so that the cooling water can be recycled. Therefore, a large amount of heat energy can be dissipated by circulating water in the cooling tower in the power generation process, and if the waste heat in the circulating water is reasonably utilized, the energy efficiency of a power plant is improved.
Disclosure of Invention
In view of the above problems, the present invention provides a combined system of thermal power generation and energy storage container. The fluid cooled in the cooling tower can be used for cooling thermal power generation equipment and cooling energy storage batteries in the energy storage container; the fluid with certain waste heat after flowing through the thermal power generation equipment can also heat the energy storage battery in the energy storage container. The combined system of the thermal power generation and the energy storage container can realize multi-energy complementation to a certain extent, fully utilize waste heat resources of a power plant, avoid ineffective dissipation of heat energy and greatly save energy.
The technical scheme provided by the invention is as follows:
the invention provides a combined system of thermal power generation and an energy storage container, which comprises a thermal power generation subsystem, an energy storage container subsystem and a circulating pipeline system, wherein the thermal power generation subsystem comprises thermal power generation equipment and a cooling tower, the energy storage container subsystem comprises one or more energy storage containers, and the circulating pipeline system comprises a cooling circulating loop provided with a first low-temperature pipeline and a first medium-temperature pipeline and a heating circulating loop provided with a first high-temperature pipeline and a second medium-temperature pipeline. In the cooling circulation loop, a cooling tower is connected to the energy storage container through a first low-temperature pipeline so as to cool the energy storage container by using fluid cooled by the cooling tower, and the energy storage container is connected to the cooling tower through a first medium-temperature pipeline so as to convey the fluid heated by heat exchange in the energy storage container into the cooling tower for cooling; in the heating circulation loop, the thermal power generation equipment is connected to the energy storage container through a first high-temperature pipeline so as to heat the energy storage container by utilizing fluid heated by the thermal power generation equipment, and the energy storage container is connected to the cooling tower through a second medium-temperature pipeline so as to input the fluid subjected to heat exchange cooling in the energy storage container into the cooling tower for cooling. The interior of the energy storage container can be cooled by utilizing the cooling tower and the fluid of the thermal power generation subsystem, so that an additional fluid storage tank and large-scale cooling equipment do not need to be arranged on the energy storage container. The fluid heated by the thermal power generation equipment can be used for heating the interior of the energy storage container, so that the waste heat generated in the power generation process is fully utilized, and in addition, after the fluid heats the energy storage container, the temperature of the fluid can be further reduced, so that the energy consumption can be reduced when the fluid enters a cooling tower for cooling. The thermal power generation subsystem can also comprise a thermal power generation subsystem high-temperature pipeline and a thermal power generation subsystem low-temperature pipeline, the cooling tower is connected with the thermal power generation equipment through the thermal power generation subsystem low-temperature pipeline to cool the thermal power generation equipment, and the thermal power generation equipment is connected with the cooling tower through the thermal power generation subsystem high-temperature pipeline to input fluid with waste heat for cooling the thermal power generation equipment into the cooling tower to be cooled. That is, the fluid may form a circulation in the thermal power generation subsystem, and the cryogenic fluid absorbs heat at the thermal power generation equipment, and then enters the cooling tower to be cooled, and the fluid cooled in the cooling tower enters the thermal power generation equipment again to be cooled. The first low temperature pipeline may be in fluid communication with the thermal power subsystem low temperature pipeline such that fluid cooled by the cooling tower may cool the thermal power plant via the thermal power subsystem low temperature pipeline or may enter the energy storage container via the first low temperature pipeline to cool the batteries within the energy storage container. The first high-temperature pipeline can be in fluid communication with the high-temperature pipeline of the thermal power generation subsystem, so that fluid with waste heat after cooling the thermal power generation equipment can directly enter the cooling tower for cooling, and can also enter the energy storage container through the first high-temperature pipeline so as to heat the battery in the energy storage container.
The first low-temperature pipeline can be also provided with a cooling device for further cooling the fluid in the first low-temperature pipeline. The temperature of the fluid in the first cryogenic line may be less than 10 ℃. The first high-temperature pipeline can also be provided with a heating device for further heating the fluid in the first high-temperature pipeline. The temperature of the fluid in the first high temperature pipeline may be 60-90 ℃.
In the energy storage container subsystem, the parallel temperature control, the series temperature control or the independent temperature control of each energy storage container can be realized by the arrangement of pipelines and the arrangement of control valves. In the following, several examples of the energy storage container subsystem of the present invention will be described.
The energy storage container subsystem can comprise a first parallel pipeline connected with each energy storage container and a second parallel pipeline connected with each energy storage container, the first parallel pipeline is communicated with the first high-temperature pipeline and the first low-temperature pipeline/first medium-temperature pipeline through control valves respectively, and the second parallel pipeline is communicated with the second medium-temperature pipeline and the first medium-temperature pipeline/first low-temperature pipeline through control valves respectively. For example, in the energy storage container subsystem, a plurality of branch pipes in a first parallel pipeline are respectively connected with a plurality of energy storage containers, and a main pipe of the first parallel pipeline is respectively communicated with a first high-temperature pipeline and a first medium-temperature pipeline through a control valve; a plurality of branch pipes in the second parallel pipeline are respectively connected with a plurality of energy storage containers, and a main pipe of the second parallel pipeline is respectively communicated with the first low-temperature pipeline and the second medium-temperature pipeline through control valves. Multiple energy storage containers may be heated or cooled simultaneously. In the heating process, a control valve on a first high-temperature pipeline and a control valve on a second medium-temperature pipeline are opened, fluid in the first high-temperature pipeline enters a plurality of energy storage containers through a main pipe and a branch pipe of a first parallel pipeline, and fluid after heat exchange in the energy storage containers enters the second medium-temperature pipeline through the branch pipe and the main pipe of the second parallel pipeline. In the cooling process, a control valve on the first low-temperature pipeline and a control valve on the first medium-temperature pipeline are opened, fluid in the first low-temperature pipeline enters a plurality of energy storage containers through a main pipe and a branch pipe of the second parallel pipeline, and fluid after heat exchange in the energy storage containers enters the second medium-temperature pipeline through the branch pipe and the main pipe of the first parallel pipeline. In addition, a separate control valve can be arranged on the branch pipe of the first parallel pipeline or the branch pipe of the second parallel pipeline, so that heating or cooling can be independently carried out on a certain energy storage container or certain energy storage containers. The first parallel line may be in direct communication with the second parallel line, or the first parallel line may be in communication with the second parallel line via a line provided in the container.
The energy storage container subsystem can comprise a first series pipeline, a middle series pipeline and a second series pipeline, a plurality of energy storage containers are connected in series through the middle series pipeline, one end of the first series pipeline is connected to a first energy storage container in the series energy storage containers, the other end of the first series pipeline is communicated with a first high-temperature pipeline and a first medium-temperature pipeline/a first low-temperature pipeline through a control valve respectively, one end of the second series pipeline is connected to a last energy storage container in the series energy storage containers, and the other end of the second series pipeline is communicated with the first low-temperature pipeline/the first medium-temperature pipeline and the second medium-temperature pipeline through the control valve respectively. For example, in the energy storage container subsystem, a first series line may be connected to a first high temperature line and a first medium temperature line, the first series line may be connected to a first energy storage container among the plurality of energy storage containers, the plurality of containers may be connected in series with each other using the series line, a last energy storage container may be connected to a second series line, and the second series line may be connected to a second medium temperature line and a first low temperature line. In the heating process, a control valve on the first high-temperature pipeline and a control valve on the second medium-temperature pipeline are opened, fluid in the first high-temperature pipeline enters the first energy storage container through the first series pipeline and sequentially passes through the plurality of energy storage containers through the middle series pipeline, and finally the last energy storage container enters the second medium-temperature pipeline through the second series pipeline. In the cooling process, a control valve on the first low-temperature pipeline and a control valve on the first medium-temperature pipeline are opened, fluid in the first low-temperature pipeline enters the tail energy storage container through the second series pipeline and sequentially passes through the plurality of energy storage containers through the middle series pipeline, and finally enters the first medium-temperature pipeline at the first energy storage container through the first series pipeline. Furthermore, heating or cooling devices may be provided on the intermediate series line to ensure that each energy storage container in the series is heated or cooled to the same extent. The first series line may be directly communicated with the intermediate series line, the intermediate series line may be directly communicated with the second series line, or the first series line may be directly communicated with the intermediate series line via a line inside the energy storage container, and the intermediate series line may be directly communicated with the second series line via a line inside the energy storage container.
The energy storage container subsystem can comprise a first parallel pipeline, a second parallel pipeline, a third parallel pipeline and a fourth parallel pipeline which are connected with each energy storage container, wherein the first parallel pipeline is communicated with the first high-temperature pipeline through a control valve, the second parallel pipeline is communicated with the second medium-temperature pipeline through a control valve, the third parallel pipeline is communicated with the first low-temperature pipeline through a control valve, and the fourth parallel pipeline is communicated with the first medium-temperature pipeline through a control valve. Specifically, in the energy storage container subsystem, a plurality of branch pipes in a first parallel pipeline are respectively connected with a plurality of energy storage containers, a plurality of branch pipes of the first parallel pipeline are respectively provided with a control valve, and a main pipe of the first parallel pipeline is communicated with a first high-temperature pipeline; a plurality of branch pipes in the second parallel pipeline are respectively connected with a plurality of energy storage containers, a plurality of branch pipes of the second parallel pipeline are respectively provided with a control valve, and a main pipe of the second parallel pipeline is communicated with a second medium temperature pipeline; a plurality of branch pipes in the third parallel pipeline are respectively connected with a plurality of energy storage containers, a plurality of branch pipes of the third parallel pipeline are respectively provided with a control valve, and a main pipe of the third parallel pipeline is communicated with the first low-temperature pipeline; and a plurality of branch pipes in the fourth parallel pipeline are respectively connected with a plurality of energy storage containers, a plurality of branch pipes of the fourth parallel pipeline are respectively provided with a control valve, and a header pipe of the fourth parallel pipeline is communicated with the first medium temperature pipeline. In this embodiment, separate temperature control of each energy storage container can be realized, for example, some energy storage containers can be heated, some other energy storage containers can be cooled, and the temperature control time, the temperature control degree and the temperature control type among the energy storage containers can be controlled respectively. In the heating process, a control valve on a branch pipe of a first parallel pipeline and a control valve on a branch pipe of a second parallel pipeline corresponding to an energy storage container to be heated are opened, fluid in a first high-temperature pipeline enters the energy storage container to be heated through the branch pipe of the first parallel pipeline, and fluid subjected to heat exchange in the energy storage container enters a second medium-temperature pipeline through the branch pipe of the second parallel pipeline. In the cooling process, a control valve on a branch pipe of a third parallel pipeline and a control valve on a branch pipe of a fourth parallel pipeline corresponding to the energy storage container to be cooled are opened, fluid in the first low-temperature pipeline enters the energy storage container to be cooled through the branch pipe of the third parallel pipeline, and fluid after heat exchange in the energy storage container enters the first medium-temperature pipeline through the branch pipe of the fourth parallel pipeline.
The invention has the advantages that:
for the lithium ion battery energy storage system auxiliary thermal power frequency modulation project, in order to solve the constant temperature problem of the energy storage container, the circulating fluid in the cooling tower can be used for heating or cooling the energy storage container, the service temperature range of the battery is ensured, meanwhile, the ineffective dissipation of heat in the power generation process is reduced, and therefore the purposes of saving energy and improving efficiency are achieved.
Drawings
Fig. 1 is a schematic view of a combined thermal power generation and energy storage container system according to a first embodiment of the present invention;
fig. 2 is a schematic view of a combined thermal power generation and energy storage container system according to a second embodiment of the present invention;
fig. 3 is a schematic view of a combined thermal power generation and energy storage container system according to a third embodiment of the present invention.
List of reference numerals:
1-thermal power plant
2-cooling tower
3-high temperature pipeline of thermal power generation subsystem
4-low-temperature pipeline of thermal power generation subsystem
5-first cryogenic line
6-first intermediate temperature pipeline
7-first high temperature pipeline
8-second intermediate temperature pipeline
9-heating device
10-Cooling device
11-pumping device
12-energy storage container
13-first parallel line
14-second parallel line
15-third parallel line
16-fourth parallel line
17-first series line
18-intermediate series line
19-second series line
Detailed Description
The invention will be further explained by embodiments in conjunction with the drawings.
Fig. 1 is a schematic view of a combined thermal power generation and energy storage container system according to a first embodiment of the present invention. In the embodiment shown in fig. 1, the combined thermal power generation and energy storage container system includes a thermal power generation subsystem, an energy storage container subsystem, and a circulation piping system. The thermal power generation subsystem further comprises thermal power generation equipment 1, a cooling tower 2, a thermal power generation subsystem high-temperature pipeline 3 and a thermal power generation subsystem low-temperature pipeline 4, the cooling tower 2 is connected to the thermal power generation equipment 1 through the thermal power generation subsystem low-temperature pipeline 4 and used for conveying cooled fluid to the thermal power generation equipment 1, and the thermal power generation equipment 1 is connected to the cooling tower 2 through the thermal power generation subsystem high-temperature pipeline 3 and used for inputting fluid with waste heat for cooling the thermal power generation equipment 1 into the cooling tower 2 for cooling. The circulating pipeline system comprises a first low-temperature pipeline 5, a first medium-temperature pipeline 6, a first high-temperature pipeline 7 and a second medium-temperature pipeline 8, a heating device 9 is arranged on the first high-temperature pipeline 7, a cooling device 10 is arranged on the first low-temperature pipeline 5, and a pumping device 11 is further arranged in the circulating pipeline system. The energy storage container subsystem comprises a plurality of energy storage containers 12, a first parallel line 13 and a second parallel line 14. The main pipe of the first parallel pipeline 13 is communicated with the first high-temperature pipeline 7 and the first medium-temperature pipeline 6 through control valves respectively, a plurality of branch pipes of the first parallel pipeline 13 are led to a plurality of energy storage containers 12 respectively, a plurality of branch pipes of the second parallel pipeline 14 are converged to the main pipe of the second parallel pipeline 14 from a plurality of containers respectively, and the main pipe of the second parallel pipeline 14 is communicated with the first low-temperature pipeline 5 and the second medium-temperature pipeline 8 through control valves respectively.
During the operation of the thermal power plant, the fluid cooled by the cooling tower 2 is continuously supplied to the thermal power plant 1 via the thermal power sub-system low-temperature pipeline 4 to cool the thermal power plant, and the fluid after heat exchange in the thermal power plant 1 is returned to the cooling tower 2 via the thermal power sub-system high-temperature pipeline 3 to be cooled again. When the energy storage container 12 needs to be heated, the fluid heated by the thermal power generation equipment 1 enters the first parallel pipeline 13 via the first high-temperature pipeline 7 to heat the plurality of energy storage containers 12 at the same time, and then the fluid returns to the cooling tower 2 via the second parallel pipeline 14 and the second medium-temperature pipeline 8 to be cooled. When the energy storage containers 12 need to be cooled, the fluid cooled by the cooling tower 2 enters the second parallel pipelines 14 via the first low-temperature pipeline 5 to cool the plurality of energy storage containers 12 simultaneously, and then the fluid returns to the cooling tower 2 via the first parallel pipelines 13 and the first medium-temperature pipeline 6 to be cooled.
Fig. 2 is a schematic view of a combined thermal power generation and energy storage container system according to a second embodiment of the present invention. In the embodiment shown in fig. 2, the main difference from the first embodiment shown in fig. 1 is that the energy storage container subsystem comprises a plurality of energy storage containers 12, a first series line 17, an intermediate series line 18 and a second series line 19, one end of the first series line 17 is connected to the first energy storage container of the series energy storage containers 12 and the other end is in communication with the first high temperature line 7 and the first medium temperature line 6 via control valves, respectively, the plurality of energy storage containers 12 are connected in series via the intermediate series line 18, one end of the second series line 19 is connected to the last energy storage container of the series energy storage containers and the other end is in communication with the first low temperature line 5 and the second medium temperature line 8 via control valves, respectively.
During the operation of the thermal power plant, the fluid cooled by the cooling tower 2 is continuously supplied to the thermal power plant 1 via the thermal power sub-system low-temperature pipeline 4 to cool the thermal power plant, and the fluid after heat exchange in the thermal power plant 1 is returned to the cooling tower 2 via the thermal power sub-system high-temperature pipeline 3 to be cooled again. When the energy storage containers 12 need to be heated, the fluid heated by the thermal power plant 1 enters the first series line 17 and the intermediate series line 18 via the first high temperature line 7 to sequentially heat the plurality of energy storage containers 12 connected in series via the series lines, and then the fluid is returned to the cooling tower 2 via the second series line 19 and the second medium temperature line 8 to be cooled. When the energy storage containers 12 need to be cooled, the falling bodies cooled by the cooling tower 2 enter the second series line 19 and the intermediate series line 18 via the first low temperature line 5 to sequentially cool the plurality of energy storage containers 12 connected in series via the series lines, and then the fluid returns to the cooling tower 2 via the first series line 17 and the first medium temperature line 6 to be cooled.
Fig. 3 is a schematic view of a combined thermal power generation and energy storage container system according to a third embodiment of the present invention. In the embodiment shown in fig. 3, the main difference from the first embodiment shown in fig. 1 is that the energy storage container subsystem comprises a plurality of energy storage containers 12, a first parallel pipeline 13, a second parallel pipeline 14, a third parallel pipeline 15 and a fourth parallel pipeline 16. The main pipe of the first parallel pipeline 13 is communicated with the first high-temperature pipeline 7, the branch pipes of the first parallel pipeline 13 are respectively connected with the energy storage containers 12 through control valves, the branch pipes of the second parallel pipeline 14 are respectively connected with the energy storage containers 12 through control valves, the main pipe of the second parallel pipeline 14 is communicated with the second medium-temperature pipeline 8, and the branch pipes of the first parallel pipeline 13 and the branch pipes of the second parallel pipeline 14 are communicated in the energy storage containers 12. The main pipe of the third parallel pipeline 15 is communicated with the first low-temperature pipeline 5, the branch pipes of the first parallel pipeline 13 are respectively connected with the energy storage containers 12 through control valves, the branch pipes of the fourth parallel pipeline 16 are respectively connected with the energy storage containers 12 through control valves, the main pipe of the fourth parallel pipeline 16 is communicated with the first medium-temperature pipeline 6, and the branch pipes of the third parallel pipeline 15 and the branch pipes of the fourth parallel pipeline 16 are communicated in the energy storage containers 12.
During the operation of the thermal power plant, the fluid cooled by the cooling tower 2 is continuously supplied to the thermal power plant 1 via the thermal power sub-system low-temperature pipeline 4 to cool the thermal power plant, and the fluid after heat exchange in the thermal power plant 1 is returned to the cooling tower 2 via the thermal power sub-system high-temperature pipeline 3 to be cooled again. When the energy storage container 12 needs to be heated, the fluid heated by the thermal power generation equipment 1 enters the first parallel pipeline 13 via the first high temperature pipeline 7 so as to heat the plurality of energy storage containers 12 respectively, and then the fluid returns to the cooling tower 2 via the second parallel pipeline 14 and the second medium temperature pipeline 8 for cooling. When the energy storage containers 12 need to be cooled, the falling bodies cooled by the cooling tower 2 enter the third parallel pipelines 15 through the first low-temperature pipeline 5 so as to respectively cool the plurality of energy storage containers 12, and then the fluid returns to the cooling tower 2 through the fourth parallel pipeline 16 and the first medium-temperature pipeline 6 for cooling.
The specific embodiments of the present invention are not intended to be limiting of the invention. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (9)
1. A combined system of thermal power generation and an energy storage container is characterized in that the combined system comprises a thermal power generation subsystem, an energy storage container subsystem and a circulating pipeline system, the thermal power generation subsystem comprises thermal power generation equipment and a cooling tower, the energy storage container subsystem comprises one or more energy storage containers, the circulating pipeline system comprises a cooling circulating loop provided with a first low-temperature pipeline and a first medium-temperature pipeline and a heating circulating loop provided with a first high-temperature pipeline and a second medium-temperature pipeline, in the cooling circulation loop, the cooling tower is connected to the energy storage container via the first cryogenic line to cool the energy storage container with the fluid cooled by the cooling tower, the energy storage container is connected to the cooling tower through the first medium-temperature pipeline so as to input the fluid heated by heat exchange in the energy storage container into the cooling tower for cooling; in the heating circulation loop, the thermal power plant is connected to the energy storage container via the first high-temperature pipeline so as to heat the energy storage container by using the fluid heated by the thermal power plant, and the energy storage container is connected to the cooling tower via the second medium-temperature pipeline so as to input the fluid subjected to heat exchange cooling in the energy storage container into the cooling tower for cooling.
2. The thermal power generation and energy storage container combination system of claim 1, further comprising a thermal power generation subsystem high temperature pipeline and a thermal power generation subsystem low temperature pipeline, wherein the cooling tower is connected to the thermal power generation equipment via the thermal power generation subsystem low temperature pipeline for cooling the thermal power generation equipment, the thermal power generation equipment is connected to the cooling tower via the thermal power generation subsystem high temperature pipeline for inputting fluid with waste heat for cooling the thermal power generation equipment into the cooling tower for cooling, the first low temperature pipeline is in fluid communication with the thermal power generation subsystem low temperature pipeline, and the first high temperature pipeline is in fluid communication with the thermal power generation subsystem high temperature pipeline.
3. The combined thermal power generation and energy storage container system of claim 1 or 2, wherein a cooling device is disposed on the first cryogenic pipeline for further cooling the fluid in the first cryogenic pipeline.
4. The combination thermal power generation and energy storage container of claim 3, wherein the temperature of the fluid in the first cryogenic line is less than 10 ℃.
5. A combined thermal power and energy storage container system according to claim 1 or 2, wherein heating means are provided on said first high temperature pipeline for further heating of the fluid in said first high temperature pipeline.
6. The combination thermal power generation and energy storage container as in claim 5, wherein the temperature of the fluid in the first high temperature pipeline is 60-90 ℃.
7. The combined thermal power generation and energy storage container system according to claim 1 or 2, wherein the energy storage container subsystem comprises a first parallel pipeline connected to each energy storage container and a second parallel pipeline connected to each energy storage container, the first parallel pipeline is respectively communicated with the first high temperature pipeline and the first medium temperature pipeline through a control valve, and the second parallel pipeline is respectively communicated with the first low temperature pipeline and the second medium temperature pipeline through a control valve; or the first parallel pipeline is communicated with the first high-temperature pipeline and the first low-temperature pipeline through control valves respectively, and the second parallel pipeline is communicated with the first medium-temperature pipeline and the second medium-temperature pipeline through control valves respectively.
8. The combined thermal power generation and energy storage container system according to claim 1 or 2, wherein a first series pipeline, an intermediate series pipeline and a second series pipeline are included in the energy storage container subsystem, a plurality of the energy storage containers are connected in series via the intermediate series pipeline, one end of the first series pipeline is connected to a first energy storage container in the series energy storage containers and the other end is communicated with the first high temperature pipeline and the first medium temperature pipeline via control valves, respectively, one end of the second series pipeline is connected to a last energy storage container in the series energy storage containers and the other end is communicated with the first low temperature pipeline and the second medium temperature pipeline via control valves, respectively; or one end of the first series pipeline is connected to a first energy storage container in the series energy storage containers, the other end of the first series pipeline is communicated with the first high-temperature pipeline and the first low-temperature pipeline through control valves respectively, one end of the second series pipeline is connected to a last energy storage container in the series energy storage containers, and the other end of the second series pipeline is communicated with the first medium-temperature pipeline and the second medium-temperature pipeline through control valves respectively.
9. The combined thermal power generation and energy storage container system according to claim 1 or 2, wherein the energy storage container subsystem includes a first parallel pipeline, a second parallel pipeline, a third parallel pipeline and a fourth parallel pipeline connected to each energy storage container, the first parallel pipeline is communicated with the first high temperature pipeline via a control valve, the second parallel pipeline is communicated with the second medium temperature pipeline via a control valve, the third parallel pipeline is communicated with the first low temperature pipeline via a control valve, and the fourth parallel pipeline is communicated with the first medium temperature pipeline via a control valve.
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