CN219640337U - Coupling heating system for improving efficiency of compressed air energy storage power station - Google Patents
Coupling heating system for improving efficiency of compressed air energy storage power station Download PDFInfo
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- CN219640337U CN219640337U CN202320103778.XU CN202320103778U CN219640337U CN 219640337 U CN219640337 U CN 219640337U CN 202320103778 U CN202320103778 U CN 202320103778U CN 219640337 U CN219640337 U CN 219640337U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 47
- 238000004146 energy storage Methods 0.000 title claims abstract description 30
- 230000008878 coupling Effects 0.000 title claims abstract description 9
- 238000010168 coupling process Methods 0.000 title claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000005338 heat storage Methods 0.000 claims abstract description 27
- 230000005611 electricity Effects 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000008236 heating water Substances 0.000 claims description 5
- 238000010248 power generation Methods 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The utility model discloses a coupling heating system for improving the efficiency of a compressed air energy storage power station, which belongs to the technical field of energy storage and comprises a compression system, a gas storage system, a heat storage system, a heating system and a turbine system; the compression system includes a first compressor and a second compressor; the gas storage system comprises a gas storage; the heat storage system comprises a compression heat storage system and a valley electricity conversion heat storage system; the heating system comprises a first heating device and a second heating device; the turbine system comprises an expander; the utility model can fully utilize heat energy of different grades, realize cascade utilization of heat energy storage and make up for a heat supply gap; the high-temperature heat energy is used for improving the air inlet temperature of high-pressure air, improving the power generation efficiency of the compressed air energy storage turbine, and the medium-temperature heat energy is used for heating or hot water supply of residents; meanwhile, valley electricity can be fully utilized, heat energy can be stored as much as possible, peak-valley electricity price difference is reasonably utilized, and proper economic benefit is obtained.
Description
Technical Field
The utility model relates to the technical field of energy storage, in particular to a coupling heating system for improving the efficiency of a compressed air energy storage power station.
Background
Along with the further requirement on carbon emission, the traditional energy still occupies the main body of electric power and electric quantity in China in the current and future for a long period of time, but renewable energy is also more and more important, and wind energy and light energy become new energy with great development potential.
Renewable energy sources have the characteristics of intermittence, volatility and aperiodicity, and the peak value of electric energy generation often does not accord with the peak value of electricity consumption, so that electric quantity waste is caused. The compressed air energy storage can timely utilize redundant energy, so that valley electricity can be effectively utilized as much as possible, the phenomenon of wind and light abandoning is avoided, the advanced adiabatic compressed air energy storage system also avoids the consumption of fossil fuel, and the advanced adiabatic compressed air energy storage system plays a positive role in environmental protection.
But the utilization efficiency of the comprehensive energy of the existing compressed air energy storage project is 70% -80%, the conversion efficiency is relatively low, and the operation cost is high. The comprehensive efficiency of the compressed air energy storage system has become one of the factors limiting the rapid development of the system, and in order to solve the problem, a new way of coupling the heat supply system needs to be provided.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a coupling heating system for improving the efficiency of the compressed air energy storage power station, so that the cascade utilization of heat energy is realized, and the comprehensive efficiency of the compressed air energy storage power station is improved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a coupling heating system for improving the efficiency of a compressed air energy storage power station comprises a compression system, a gas storage system, a heat storage system, a heating system and a turbine system; the compression system includes a first compressor and a second compressor; the gas storage system comprises a gas storage; the heat storage system comprises a compression heat storage system and a valley electricity conversion heat storage system; the heating system comprises a first heating device and a second heating device; the turbine system comprises an expander;
the compression heat storage system comprises a first air-water heat exchanger, a medium-temperature water tank connected with a water outlet of the first air-water heat exchanger, a low-temperature water tank connected with the medium-temperature water tank through a medium-temperature water outlet pipeline, a second air-water heat exchanger with a water inlet connected with the low-temperature water tank through a low-temperature water outlet pipeline, and a high Wen Shuiguan connected with a water outlet of the second air-water heat exchanger; the high-temperature water tank is connected with the water inlet of the first air-water heat exchanger through a high-temperature water outlet pipeline;
the valley electricity conversion heat storage system comprises an oil-gas heat exchanger, a medium-temperature oil tank connected with an oil outlet of the oil-gas heat exchanger, a low-temperature oil tank connected with the medium-temperature oil tank through a medium-temperature oil outlet pipeline, and a high-temperature oil tank connected with the low-temperature oil tank through a low-temperature oil outlet pipeline; the high-temperature oil tank is connected with an oil inlet of the oil-gas heat exchanger through a high-temperature oil outlet pipeline.
The technical scheme of the utility model is further improved as follows: and the air inlet and the air outlet of the first air-water heat exchanger are respectively connected with the air inlets of the air storage and the oil-gas heat exchanger.
The technical scheme of the utility model is further improved as follows: and an air inlet and an air outlet of the second air-water heat exchanger are respectively connected with the first compressor and the second compressor.
The technical scheme of the utility model is further improved as follows: and the medium-temperature water outlet pipeline is provided with a first heating device and a heating water pump.
The technical scheme of the utility model is further improved as follows: the low-temperature water outlet pipeline is provided with a low-temperature water pump.
The technical scheme of the utility model is further improved as follows: and a high-temperature water pump is arranged on the high-temperature water outlet pipeline.
The technical scheme of the utility model is further improved as follows: and an air outlet of the oil-gas heat exchanger is connected with the expansion machine.
The technical scheme of the utility model is further improved as follows: and a medium-temperature oil pump and a second heating device are arranged on the medium-temperature oil outlet pipeline.
The technical scheme of the utility model is further improved as follows: the low-temperature oil outlet pipeline is provided with a low-temperature oil pump and a valley electric heater.
The technical scheme of the utility model is further improved as follows: and a high-temperature oil pump is arranged on the high-temperature oil outlet pipeline.
By adopting the technical scheme, the utility model has the following technical progress:
1. the utility model has simple structure, does not pollute the environment in the process of energy generation and conversion, is beneficial to constructing a low-carbon, clean and environment-friendly comprehensive energy system, fully utilizes heat energy of different grades, realizes cascade utilization of heat storage energy and makes up a heat supply gap; the high-temperature heat energy is used for improving the air inlet temperature of high-pressure air, improving the power generation efficiency of the compressed air energy storage turbine, and the medium-temperature heat energy is used for heating or hot water supply of residents.
2. The utility model fully utilizes valley electricity, stores heat energy as much as possible, reasonably utilizes peak-valley electricity price difference and obtains proper economic benefit.
Drawings
FIG. 1 is a schematic diagram of a compressed heat storage system according to the present utility model;
FIG. 2 is a schematic diagram of a valley electricity converted heat storage system in accordance with the present utility model;
wherein, 1, a first compressor, 2, a second compressor, 3, a gas storage, 4, a first heating device, 5, a second heating device, 6, an expansion machine, 7, a heating water pump, 8, a first air-water heat exchanger, 9, a medium-temperature water tank, 10, a low-temperature water tank, 11, a second gas-water heat exchanger, 12, high Wen Shuiguan, 13, a low-temperature water pump, 14, a high-temperature water pump, 15, an oil-gas heat exchanger, 16, a medium-temperature oil tank, 17, a low-temperature oil tank, 18, a high-temperature oil tank, 19, a medium-temperature oil pump, 20, a low-temperature oil pump, 21, a valley electric heater, 22 and a high-temperature oil pump.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and examples:
in the description of the present utility model, it should be understood that the terms "first," "second," … … are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second" … … can explicitly or implicitly include at least one such feature.
A coupling heating system for improving the efficiency of a compressed air energy storage power station comprises a compression system, a gas storage system, a heat storage system, a heating system and a turbine system; the compression system comprises a first compressor 1 and a second compressor 2; the gas storage system comprises a gas storage 3; the heat storage system comprises a compression heat storage system and a valley electricity conversion heat storage system; the heating system comprises a first heating device 4 and a second heating device 5; the turbine system comprises an expander 6;
as shown in fig. 1, the compression heat storage system comprises a first gas-water heat exchanger 8, a medium-temperature water tank 9 connected with a water outlet of the first gas-water heat exchanger 8, a low-temperature water tank 10 connected with the medium-temperature water tank 9 through a medium-temperature water outlet pipeline, a second gas-water heat exchanger 11 with a water inlet connected with the low-temperature water tank 10 through a low-temperature water outlet pipeline, and a high Wen Shuiguan 12 connected with a water outlet of the second gas-water heat exchanger 11; the high-temperature water tank 12 is connected with the water inlet of the first air-water heat exchanger 8 through a high-temperature water outlet pipeline; the air inlet and the air outlet of the first air-water heat exchanger 8 are respectively connected with the air inlets of the air storage 3 and the oil-gas heat exchanger 15; the air inlet and the air outlet of the second air-water heat exchanger 11 are respectively connected with the first compressor 1 and the second compressor 2; the second compressor 2 is the next stage compressor of the first compressor 1; the medium-temperature water outlet pipeline is provided with a first heating device 4 and a heating water pump 7; the low-temperature water outlet pipeline is provided with a low-temperature water pump 13; the high-temperature water outlet pipeline is provided with a high-temperature water pump 14.
As shown in fig. 2, the valley electricity conversion heat storage system comprises an oil-gas heat exchanger 15, a medium-temperature oil tank 16 connected with an oil outlet of the oil-gas heat exchanger 15, a low-temperature oil tank 17 connected with the medium-temperature oil tank 16 through a medium-temperature oil outlet pipeline, and a high-temperature oil tank 18 connected with the low-temperature oil tank 17 through a low-temperature oil outlet pipeline; the high-temperature oil tank 18 is connected with an oil inlet of the oil-gas heat exchanger 15 through a high-temperature oil outlet pipeline; the air inlet and the air outlet of the oil-gas heat exchanger 15 are respectively connected with the air outlet of the first air-water heat exchanger 8 and the expander 6; a medium-temperature oil pump 19 and a second heating device 5 are arranged on the medium-temperature oil outlet pipeline; a low-temperature oil pump 20 and a valley electric heater 21 are arranged on the low-temperature oil outlet pipeline; a high-temperature oil pump 22 is arranged on the high-temperature oil outlet pipeline.
The number of the heating water pump 7, the low-temperature water pump 13, the high-temperature water pump 14, the medium-temperature oil pump 19, the low-temperature oil pump 20 and the high-temperature oil pump 22 is two, and the two oil pumps are respectively arranged on two branches in parallel.
Working principle:
the compressed heat storage system utilizes a heat medium water medium, high-quality compressed heat is sent to an inlet of an expansion machine 6 through a first air-water heat exchanger 8 to heat high-pressure air, work efficiency of a turbine is improved, hot water temperature after heat exchange is about 90 ℃, the hot water is stored into a medium-temperature water tank 9, the heat is further supplied to the outside through a first heating device 4, low-temperature heat medium water is stored into a low-temperature water tank 10 after further heat exchange, and the next compressed heat exchange is participated through a second air-water heat exchanger 11, so that heat exchange is sequentially circulated.
The heat storage system of the valley electricity conversion heat utilizes a heat conducting oil medium, high-quality valley electricity conversion heat is sent to an inlet of an expander 6 through an oil-gas heat exchanger 15, high-pressure air is heated, the air inlet temperature of a turbine is increased, the heat conducting oil temperature after heat exchange is about 120 ℃, the heat conducting oil is stored in a medium-temperature oil tank 16 to heat the outside through a second heating device 5, and low-temperature heat conducting oil after heat exchange flows into a low-temperature oil tank 17 and participates in the next valley electricity heating through a valley electric heater 21.
In conclusion, the utility model can fully utilize heat energy of different grades, realize cascade utilization of heat energy storage and make up for a heat supply gap; the high-temperature heat energy is used for improving the air inlet temperature of high-pressure air, improving the power generation efficiency of the compressed air energy storage turbine, and the medium-temperature heat energy is used for heating or hot water supply of residents; meanwhile, valley electricity can be fully utilized, heat energy can be stored as much as possible, peak-valley electricity price difference is reasonably utilized, and proper economic benefit is obtained.
Claims (10)
1. The utility model provides an improve coupling heating system of compressed air energy storage power station efficiency which characterized in that: the system comprises a compression system, a gas storage system, a heat storage system, a heating system and a turbine system; the compression system comprises a first compressor (1) and a second compressor (2); the gas storage system comprises a gas storage (3); the heat storage system comprises a compression heat storage system and a valley electricity conversion heat storage system; the heating system comprises a first heating device (4) and a second heating device (5); the turbine system comprises an expander (6);
the compression heat storage system comprises a first air-water heat exchanger (8), a medium-temperature water tank (9) connected with a water outlet of the first air-water heat exchanger (8), a low Wen Shuiguan (10) connected with the medium-temperature water tank (9) through a medium-temperature water outlet pipeline, a second air-water heat exchanger (11) with a water inlet connected with the low Wen Shuiguan (10) through a low-temperature water outlet pipeline, and a high Wen Shuiguan (12) connected with a water outlet of the second air-water heat exchanger (11); the high-temperature water tank (12) is connected with the water inlet of the first air-water heat exchanger (8) through a high-temperature water outlet pipeline;
the valley electricity conversion heat storage system comprises an oil-gas heat exchanger (15), a medium-temperature oil tank (16) connected with an oil outlet of the oil-gas heat exchanger (15), a low-temperature oil tank (17) connected with the medium-temperature oil tank (16) through a medium-temperature oil outlet pipeline, and a high-temperature oil tank (18) connected with the low-temperature oil tank (17) through a low-temperature oil outlet pipeline; the high-temperature oil tank (18) is connected with an oil inlet of the oil-gas heat exchanger (15) through a high-temperature oil outlet pipeline.
2. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: the air inlet and the air outlet of the first air-water heat exchanger (8) are respectively connected with the air inlets of the air storage (3) and the oil-gas heat exchanger (15).
3. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: an air inlet and an air outlet of the second air-water heat exchanger (11) are respectively connected with the first compressor (1) and the second compressor (2).
4. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: the medium-temperature water outlet pipeline is provided with a first heating device (4) and a heating water pump (7).
5. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: the low-temperature water outlet pipeline is provided with a low-temperature water pump (13).
6. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: the high-temperature water outlet pipeline is provided with a high-temperature water pump (14).
7. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: the air outlet of the oil-gas heat exchanger (15) is connected with the expander (6).
8. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: the medium-temperature oil outlet pipeline is provided with a medium-temperature oil pump (19) and a second heating device (5).
9. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: the low-temperature oil outlet pipeline is provided with a low-temperature oil pump (20) and a valley electric heater (21).
10. The coupled heating system for increasing efficiency of a compressed air energy storage power plant of claim 1, wherein: and a high-temperature oil pump (22) is arranged on the high-temperature oil outlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320103778.XU CN219640337U (en) | 2023-02-03 | 2023-02-03 | Coupling heating system for improving efficiency of compressed air energy storage power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320103778.XU CN219640337U (en) | 2023-02-03 | 2023-02-03 | Coupling heating system for improving efficiency of compressed air energy storage power station |
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| CN219640337U true CN219640337U (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320103778.XU Active CN219640337U (en) | 2023-02-03 | 2023-02-03 | Coupling heating system for improving efficiency of compressed air energy storage power station |
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| Country | Link |
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| CN (1) | CN219640337U (en) |
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2023
- 2023-02-03 CN CN202320103778.XU patent/CN219640337U/en active Active
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