CN113623185B - Natural gas pressure difference energy compressed air energy storage system - Google Patents
Natural gas pressure difference energy compressed air energy storage system Download PDFInfo
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- CN113623185B CN113623185B CN202010382412.1A CN202010382412A CN113623185B CN 113623185 B CN113623185 B CN 113623185B CN 202010382412 A CN202010382412 A CN 202010382412A CN 113623185 B CN113623185 B CN 113623185B
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- Prior art keywords
- natural gas
- gas turbine
- motor
- energy
- air
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000003345 natural gas Substances 0.000 title claims abstract description 42
- 238000004146 energy storage Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a natural gas pressure difference energy compressed air energy storage system which comprises a natural gas turbine, a motor and an air compressor, wherein the natural gas turbine is connected with the motor, the air compressor is connected with the motor, the air outlet end of the natural gas turbine is sequentially connected with a cold-heat exchanger, a boiler, a gas turbine and a generator, the air inlet end of the natural gas turbine is externally connected with a heat accumulator, the heat accumulator is connected with the gas turbine, the outlet of the air compressor is sequentially connected with a cooling dehumidifier, a filtering dryer and a high-pressure air storage tank, and the high-pressure air storage tank is connected with the boiler. The invention utilizes the pressure difference energy of the natural gas to generate electricity and obtain compressed air energy, cold energy and heat energy at the same time.
Description
Technical Field
The invention relates to the field of natural gas pressure difference energy and energy storage, in particular to a cold, heat and electricity triple supply system for natural gas pressure difference energy.
Background
In recent years, a throttling valve adopted in a natural gas pressure regulating process has the problem of energy waste, and an existing natural gas cooling, heating and power triple supply system also has the problem of low energy utilization rate. Therefore, a new solution is now needed.
Disclosure of Invention
In order to solve the problems, the invention discloses a natural gas pressure difference energy compressed air energy storage system, wherein a natural gas turbine replaces a throttle valve to recover pressure difference energy of natural gas and is used for generating power and obtaining compressed air energy, and the system is different from a traditional natural gas cooling, heating and power triple supply system, can generate cold, heat and power and can supply compressed air to industrial users, and the energy utilization rate is improved.
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a natural gas pressure differential can compressed air energy storage system, includes natural gas turbine, motor and air compressor machine, natural gas turbine with the motor is connected, the air compressor machine with the motor is connected, natural gas turbine gives vent to anger the end and has connected gradually cold and hot exchanger, boiler, gas turbine and generator, the external heat accumulator of natural gas turbine inlet end, the heat accumulator with gas turbine is connected, the air compressor machine export has connected gradually cooling dehumidifier, filter drier and high-pressure gas holder, high-pressure gas holder with the boiler is connected. The inlet of the natural gas turbine is connected with the outlet at one end of the heat accumulator, and the outlet of the gas turbine is connected with the inlet at one end of the heat accumulator.
As an improvement of the invention, the motor is a permanent magnet motor, a first clutch is arranged between the motor and the natural gas turbine, a second clutch is arranged between the motor and the air compressor, and the motor is externally connected with a power supply. The power supply is a storage battery.
As an improvement of the invention, a first stop valve is arranged between the filter dryer and the high-pressure gas storage tank, a reversing valve is arranged between the high-pressure gas storage tank and the boiler, and the reversing valve is additionally connected with a second stop valve.
As an improvement of the present invention, a flow dividing valve is provided between the cold heat exchanger and the boiler.
As an improvement of the invention, the cooling dehumidifier is externally connected with a hot water heater.
As a refinement of the invention, the heat accumulator is connected to the hot water heater.
Compared with the prior art, the invention has the following advantages: the invention is suitable for natural air pressure difference energy recovery and energy storage, the generated compressed air can be directly canned for sale on one hand, and on the other hand, the compressed air can be mixed with high-pressure natural gas of a door station and then enters a boiler for combustion, and then enters a gas turbine for expansion and work application to drive a generator to generate electricity, the generated electric energy is sold to a power grid, and the energy utilization rate is improved.
Drawings
FIG. 1 is a schematic diagram of a natural gas pressure differential energy compressed air energy storage system according to the present invention;
list of reference numerals: 1. a natural gas turbine; 2. a cold-heat exchanger; 3. a flow divider valve; 4. a first clutch; 5. a second clutch; 6. a motor; 7. a power source; 8. an air compressor; 9. cooling the dehumidifier; 10. a hot water heater; 11. a heat accumulator; 12. a filter dryer; 13. a first shut-off valve; 14. a high pressure gas storage tank; 15. a diverter valve; 16. a second stop valve; 17. a boiler; 18. a gas turbine; 19. an electric generator.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, the natural gas expansion process is as follows: the high-pressure natural gas is preheated by the heat accumulator 11 and then enters the natural gas turbine 1 to be expanded, and the expanded low-temperature natural gas is heated by the cooling heat exchanger 2 and then flows out.
Referring to fig. 1, the compressed air flow path is: the air at normal temperature and normal pressure is compressed by an air compressor 8, cooled and dehumidified by a cooling dehumidifier 9, and then enters a high-pressure air storage tank 14 for storage after passing through a filter dryer 12.
Referring to fig. 1, there are two ways of releasing energy from the compressed air in the high pressure air tank 14: one is directly canned and sold through a reversing valve 15 and a second stop valve 16; the other is that the high-pressure natural gas is mixed with the high-pressure natural gas of the door station through a reversing valve 15, enters a boiler 17 for combustion, then enters a gas turbine 18 for expansion and work doing, drives a generator 19 for power generation, and sells the generated electric energy to a power grid.
Referring to fig. 1, the heating process is as follows: the cooling water absorbs the heat of the high-temperature compressed air at the outlet of the air compressor 8 in the cooling dehumidifier 9, then enters the heater 10, is heated by the tail gas of the gas turbine 18 at the outlet of the heat accumulator 11, and then is sent to a user for heat supply.
Referring to fig. 1, the cooling process is: the cooling water is cooled by the expanded natural gas in the cooling heat exchanger 2, and then is sent to a user for refrigeration.
The inlet of the natural gas turbine 1 is connected with the outlet at one end of the heat accumulator 11, the outlet of the gas turbine 18 is connected with the inlet at one end of the heat accumulator 11, and the high-pressure natural gas entering the natural gas turbine 1 is preheated by utilizing the waste heat of the gas turbine 18.
The motor 6 is externally connected with a power supply 7, and the motor 6 can drive the natural gas turbine 1 and the air compressor 8 to operate respectively through the first clutch 4 and the second clutch 5.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (1)
1. The energy storage system is characterized by comprising a natural gas turbine (1), a motor (6) and an air compressor (8), wherein the natural gas turbine (1) is connected with the motor (6), the air compressor (8) is connected with the motor (6), the air outlet end of the natural gas turbine (1) is sequentially connected with a cold-heat exchanger (2), a boiler (17), a gas turbine (18) and a generator (19), the air inlet end of the natural gas turbine (1) is externally connected with a heat accumulator (11), the heat accumulator (11) is connected with the gas turbine (18), the outlet of the air compressor (8) is sequentially connected with a cooling dehumidifier (9), a filtering dryer (12) and a high-pressure air storage tank (14), and the high-pressure air storage tank (14) is connected with the boiler (17);
the motor (6) is a permanent magnet motor, a first clutch (4) is arranged between the motor (6) and the natural gas turbine (1), a second clutch (5) is arranged between the motor (6) and the air compressor (8), and the motor (6) is externally connected with a power supply (7);
a first stop valve (13) is arranged between the filtering dryer (12) and the high-pressure air storage tank (14), a reversing valve (15) is arranged between the high-pressure air storage tank (14) and the boiler (17), and the reversing valve (15) is additionally connected with a second stop valve (16);
a flow dividing valve (3) is arranged between the cold-heat exchanger (2) and the boiler (17);
the cooling dehumidifier (9) is externally connected with a hot water heater (10);
the heat accumulator (11) is connected with the hot water heater (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382412.1A CN113623185B (en) | 2020-05-08 | 2020-05-08 | Natural gas pressure difference energy compressed air energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382412.1A CN113623185B (en) | 2020-05-08 | 2020-05-08 | Natural gas pressure difference energy compressed air energy storage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113623185A CN113623185A (en) | 2021-11-09 |
| CN113623185B true CN113623185B (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010382412.1A Active CN113623185B (en) | 2020-05-08 | 2020-05-08 | Natural gas pressure difference energy compressed air energy storage system |
Country Status (1)
| Country | Link |
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| CN (1) | CN113623185B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233820B (en) * | 2013-05-10 | 2016-06-08 | 华北电力大学（保定） | Caes and the integrated power generation system of combined cycle |
| CN104088703B (en) * | 2014-06-24 | 2017-02-08 | 华北电力大学 | Compressed air energy storage-combined cycle integration system of intercooled preheating steam turbine |
| CN104675521A (en) * | 2015-02-26 | 2015-06-03 | 天津大学 | Novel gas-steam combined cycle cooling, heating and power generation system |
| CN206785443U (en) * | 2017-05-12 | 2017-12-22 | 四川宏达石油天然气工程有限公司 | A kind of high-pressure natural gas cogeneration distributed energy resource system |
| CN108757056A (en) * | 2018-05-14 | 2018-11-06 | 中国科学院过程工程研究所 | A kind of natural gas pressure difference driving electricity generation system |
| CN209586516U (en) * | 2019-01-10 | 2019-11-05 | 杭州哲达科技股份有限公司 | A kind of Distribution of Natural formula energy and oil free type compressed air integrated system |
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2020
- 2020-05-08 CN CN202010382412.1A patent/CN113623185B/en active Active
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| CN113623185A (en) | 2021-11-09 |
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