CN111396739A - Novel gas storage device and method in constant pressure ratio operation mode - Google Patents
Novel gas storage device and method in constant pressure ratio operation mode Download PDFInfo
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- CN111396739A CN111396739A CN202010311943.1A CN202010311943A CN111396739A CN 111396739 A CN111396739 A CN 111396739A CN 202010311943 A CN202010311943 A CN 202010311943A CN 111396739 A CN111396739 A CN 111396739A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 abstract description 12
- 230000006835 compression Effects 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0367—Localisation of heat exchange
- F17C2227/0369—Localisation of heat exchange in or on a vessel
- F17C2227/0372—Localisation of heat exchange in or on a vessel in the gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
- F17C2260/023—Avoiding overheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a novel gas storage device and a method in a constant pressure ratio operation mode. The multi-layer baffle with the heat absorption function is arranged in the air storage device to absorb heat generated in the high-pressure air storage process, and the heat is used for heating air which cannot be released due to the reduction of the pressure of the air storage device in the energy release process, so that the compression energy generated in the compression process is utilized as much as possible, the air expansion work capacity in a unit period is increased, and the energy storage efficiency of the compressed air energy storage system is improved.
Description
Technical Field
The invention relates to a novel air storage device and a novel air storage method in a constant pressure ratio operation mode, and belongs to the technical field of air energy storage systems.
Background
Common power energy storage operation modes include water pumping energy storage, compressed air energy storage, flywheel energy storage, capacitance energy storage and the like. The energy storage operation modes can solve the problem of electric energy loss in an electric power system, improve the electric energy efficiency, reduce the emission of pollutants, control the environmental damage to a certain extent, and are an important development direction facing the current electric power industry.
The compressed air energy storage and the water pumping energy storage are operation modes which can be used for large-scale energy storage. The water pumping and energy storage technology is mature, a specific geographical position is needed in the actual construction process, certain damage is caused to the ecological environment, and the development of the technology tends to be gentle. The method is an energy storage operation mode with great prospect, and has important application in the aspects of renewable energy utilization and 'peak clipping and valley filling' of a power system. The compressed air energy storage is an energy storage operation mode that air is compressed to an air storage device for storage by utilizing renewable energy or surplus electric energy of a power grid in a power consumption valley period and the electric energy is released in a power consumption peak period. Compared with other energy storage operation modes, the compressed air energy storage has the advantages of large scale, high reliability, environmental protection and the like, and gradually becomes a hot point of research of people. With the research of people, the compressed air energy storage system is developed to the prior advanced compressed air energy storage system from the traditional afterburning system, a combustion device is abandoned, and the compression heat is recovered and used for heating air, so that the operation efficiency of the system is improved.
In compressed air energy storage systems, the air storage device plays an important role. The constant-pressure type gas storage device has two operation modes of a constant-volume type and a constant-pressure type, and the requirement on the constant-pressure type gas storage device is relatively high and difficult to realize, so that the constant-volume type device is adopted in the actual process. Under the operating mode of constant pressure ratio, the outlet pressure of the compressor is basically kept unchanged in the energy storage process, air is in a high-pressure state before entering the air storage device, the air enters the air storage device to be stored as a compression process, compression heat can be generated to increase the internal temperature of the air storage device, the air storage quantity and the air storage density are reduced, and the energy storage efficiency is influenced. In the expansion working stage, high-pressure air is released from the air storage device and enters the expansion machine, and the inlet pressure of the expansion machine is kept constant. At the later stage of the energy release process, the reduction of the air pressure in the device can lead to the fact that a part of air can not be released to participate in expansion work, and a part of compression energy can be lost, so that a method for reducing the internal temperature of the air storage device, improving the air storage capacity and the air work capacity in a unit period and improving the energy storage efficiency of the compressed air energy storage system in a constant pressure ratio operation mode needs to be found.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the novel air storage device and the method have the advantages that high-pressure air is uniformly distributed inside the air storage device through the arc-shaped baffle plate in the energy storage process, compression heat generated in the storage process is absorbed, the internal temperature of the air storage device is reduced, meanwhile, the heat is used for heating and expanding residual air in the working process in the energy release stage, the problem that the work amount in a unit period is reduced due to the fact that the internal pressure of the air storage device is reduced is solved, and the energy storage efficiency of a system is improved.
The technical scheme adopted by the invention is as follows: the utility model provides a novel gas storage device under constant pressure ratio operation mode, includes gas storage device, and the gas storage device upper end sets up the intake pipe, and the lower extreme sets up the blast pipe, and the inside from the top down of gas storage device installs multilayer cantilever baffle, and adjacent two-layer cantilever baffle staggered arrangement relatively, every layer of cantilever baffle surface is equipped with the heat transfer material layer.
Preferably, above-mentioned cantilever baffle is the arc structure of cross-section kickup, and every layer of cantilever baffle sets up the polylith, and adjacent two-layer cantilever baffle staggered arrangement, and the cantilever baffle width on upper strata is greater than the lower floor and corresponds the clearance between two adjacent cantilever baffles.
Preferably, the air inlet pipe is provided with an air inlet valve, the exhaust pipe is provided with an air outlet valve, and the air inlet valve and the air outlet valve are regulating valves with adjustable opening degrees.
Preferably, one end of the cantilever baffle is fixedly connected to the inner wall of the gas storage device, and two corners of the other end of the cantilever baffle are fixedly connected to the inner wall of the gas storage device through reinforcing ribs.
Preferably, one end of the cantilever baffle is provided with a flange plate, and the flange plate is locked on the inner wall of the gas storage device through screws.
Preferably, the flange hole on the flange plate is a vertical strip-shaped hole.
Preferably, at least two cantilever baffles are provided.
A control method of a novel air storage device in a constant pressure ratio operation mode comprises an energy storage stage and an energy release stage, wherein when the energy storage stage is started, an air inlet valve of the air storage device is opened, an air outlet valve is closed, high-pressure air starts to perform a storage process, flows along the set direction of an arc-shaped cantilever baffle, performs heat exchange with a heat exchange material layer and is uniformly distributed along the bottom of the air storage device until the energy storage process is finished, and the air inlet valve is closed at the moment; when the energy releasing stage begins, the air outlet valve is opened, high-pressure air is released, the internal pressure of the air storage device is gradually reduced along with the energy releasing process, when the internal pressure of the air storage device is smaller than the inlet pressure of the expansion machine, air does not enter the expansion machine any more, and then the heat exchange material layer releases the stored heat to heat the residual air to continuously participate in expansion work.
The invention has the beneficial effects that: compared with the prior art, the multi-layer baffle with the heat absorption function is arranged in the air storage device to absorb heat generated in the high-pressure air storage process, and the part of heat is used for heating air which cannot be released due to the reduction of the pressure of the air storage device in the energy release process, so that the compression energy generated in the compression process is utilized as much as possible, the air expansion work capacity in a unit period is increased, and the energy storage efficiency of the compressed air energy storage system is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the cantilever baffle;
FIG. 3 is a schematic diagram of a transverse cross-sectional structure of a cantilever baffle;
fig. 4 is a schematic longitudinal sectional structure of the cantilever baffle.
In the figure, 1, an intake valve; 2. a gas storage device; 3. a cantilever baffle; 4. an air outlet valve; 5. and (5) reinforcing ribs.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1: as shown in fig. 1-4, a novel gas storage device in a constant pressure ratio operation mode comprises a gas storage device 2, wherein an air inlet pipe is arranged at the upper end of the gas storage device 2, an exhaust pipe is arranged at the lower end of the gas storage device, multiple layers of cantilever baffles 3 are arranged in the gas storage device 2 from top to bottom, the adjacent two layers of cantilever baffles 3 are arranged in a relatively staggered manner, and a heat exchange material layer is arranged on the surface of each layer of cantilever baffle 3.
Preferably, above-mentioned cantilever baffle 3 is the arc structure of cross-section kickup, and every layer of cantilever baffle 3 sets up the polylith, and adjacent two-layer cantilever baffle 3 staggered arrangement, and 3 width of cantilever baffle on upper strata are greater than the lower floor and correspond clearance between two adjacent cantilever baffles 3, and the arrangement structure of curved structure and cantilever baffle more does benefit to the air heat-retaining, and absorption efficiency improves greatly.
Preferably, the air inlet pipe is provided with an air inlet valve 1, the exhaust pipe is provided with an air outlet valve 4, and the air inlet valve 1 and the air outlet valve 4 are regulating valves with adjustable opening degrees.
Preferably, 3 one end fixed connection of above-mentioned cantilever baffle are at 2 inner walls of gas storage device, and other end both corners are through reinforcing 5 fixed connection at 2 inner walls of gas storage device, can improve the stability of cantilever baffle, avoid rocking and lead to the other end to damage.
Preferably, the flange plate is arranged at one end of the cantilever baffle 3 and is locked on the inner wall of the gas storage device 2 through screws, so that the connection is convenient and fast, and the installation is stable and reliable.
Preferably, the flange holes on the flange plate are vertical strip-shaped holes, so that the height can be adjusted.
Preferably, at least two cantilever baffles 3 are provided.
Example 2: a control method of a novel air storage device in a constant pressure ratio operation mode comprises an energy storage stage and an energy release stage, wherein when the energy storage stage is started, an air inlet valve 1 of the air storage device is opened, an air outlet valve 4 is closed, high-pressure air starts to perform a storage process, flows along a set direction of an arc-shaped cantilever baffle 3, performs heat exchange with a heat exchange material layer and is uniformly distributed along the bottom of the air storage device 2, the energy storage density of the air storage device is improved until the energy storage process is finished, and the air inlet valve 1 is closed at the moment; when the energy release stage begins, the air outlet valve 4 is opened, high-pressure air is released, the internal pressure of the air storage device 2 is gradually reduced along with the energy release process, when the internal pressure of the air storage device is smaller than the pressure of an inlet of the expansion machine, air does not enter the expansion machine any more, then the heat exchange material layer releases stored heat to heat residual air, the thermal performance of the residual air is improved to continuously participate in expansion work, the work doing amount in a unit period is improved by utilizing the compression energy to the maximum extent, and the energy storage efficiency of the compressed air energy storage system is improved.
In the energy storage and release conversion process, high-pressure air from a compressor enters the air storage device 2 through the air inlet valve 1, the arranged multilayer arc-shaped cantilever baffle 3 can increase the heat exchange area and contact time to absorb more heat generated by the high-pressure air, and release and heat the residual air in the energy release stage, so that the compression energy generated in the compression process is fully utilized, the air storage density and the work capacity of the energy storage system in a unit period are improved, and the overall efficiency of the compressed air energy storage system is further improved.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.
Claims (8)
1. The utility model provides a novel gas storage device under constant pressure ratio operation mode, includes gas storage device (2), and gas storage device (2) upper end sets up the intake pipe, and the lower extreme sets up blast pipe, its characterized in that: the multilayer cantilever baffles (3) are arranged in the gas storage device (2) from top to bottom, two adjacent layers of cantilever baffles (3) are arranged in a relatively staggered mode, and a heat exchange material layer is arranged on the surface of each layer of cantilever baffle (3).
2. The novel gas storage device in a constant pressure ratio operation mode according to claim 1, wherein: cantilever baffle (3) are the arc structure of cross-section kickup, and every layer of cantilever baffle (3) sets up the polylith, and adjacent two-layer cantilever baffle (3) staggered arrangement, and cantilever baffle (3) width on upper strata is greater than the lower floor and corresponds the clearance between two adjacent cantilever baffle (3).
3. The novel gas storage device in a constant pressure ratio operation mode according to claim 1, wherein: an air inlet valve (1) is installed on the air inlet pipe, an air outlet valve (4) is installed on the air outlet pipe, and the air inlet valve (1) and the air outlet valve (4) are adjusting valves with adjustable opening degrees.
4. The novel gas storage device in a constant pressure ratio operation mode according to claim 1, wherein: one end of the cantilever baffle (3) is fixedly connected to the inner wall of the gas storage device (2), and two corners of the other end of the cantilever baffle are fixedly connected to the inner wall of the gas storage device (2) through the reinforcing ribs (5).
5. The novel gas storage device in a constant pressure ratio operation mode according to claim 1, wherein: one end of the cantilever baffle (3) is provided with a flange which is locked on the inner wall of the gas storage device (2) through screws.
6. The novel gas storage device in a constant pressure ratio operation mode according to claim 5, wherein: the flange hole on the flange plate is a vertical strip-shaped hole.
7. The novel gas storage device in a constant pressure ratio operation mode according to claim 1, wherein: the cantilever baffles (3) are at least two.
8. The method for controlling the novel gas storage device in the constant pressure ratio operation mode according to any one of claims 1 to 7, wherein: the method comprises an energy storage stage and an energy release stage, wherein when the energy storage stage is started, an air inlet valve (1) of the air storage device is opened, an air outlet valve (4) is closed, high-pressure air starts to perform a storage process, flows along the set direction of an arc-shaped cantilever baffle (3), performs heat exchange with a heat exchange material layer and is uniformly distributed along the bottom of the air storage device (2), and when the energy storage process is ended, the air inlet valve (1) is closed; when the energy releasing stage begins, the air outlet valve (4) is opened, high-pressure air is released, the internal pressure of the air storage device (2) is gradually reduced along with the energy releasing process, when the internal pressure of the air storage device is smaller than the inlet pressure of the expansion machine, air does not enter the expansion machine any more, and then the heat exchange material layer releases the stored heat to heat the residual air to continuously participate in expansion work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010311943.1A CN111396739A (en) | 2020-04-20 | 2020-04-20 | Novel gas storage device and method in constant pressure ratio operation mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010311943.1A CN111396739A (en) | 2020-04-20 | 2020-04-20 | Novel gas storage device and method in constant pressure ratio operation mode |
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| CN111396739A true CN111396739A (en) | 2020-07-10 |
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| CN202010311943.1A Pending CN111396739A (en) | 2020-04-20 | 2020-04-20 | Novel gas storage device and method in constant pressure ratio operation mode |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091093A (en) * | 1999-09-21 | 2001-04-06 | Toyota Autom Loom Works Ltd | Hydrogen-absorbing indirect heat exchanger |
| CN102008832A (en) * | 2009-09-04 | 2011-04-13 | 中国石油化工集团公司 | Device for directly exchanging heat of oil and gas |
| CN106195611A (en) * | 2016-07-12 | 2016-12-07 | 华北电力大学（保定） | A kind of compressed-air energy-storage system constant temperature heat insulating caisson |
| CN106673098A (en) * | 2016-11-02 | 2017-05-17 | 天津大学 | Mounting method for uniform liquid distribution structure of transverse tube falling film evaporator |
| CN207945830U (en) * | 2018-01-16 | 2018-10-09 | 淮安中大水箱有限公司 | A kind of separate water circulation air source heat pump water box |
| CN109945714A (en) * | 2019-04-23 | 2019-06-28 | 深圳市爱能森科技有限公司 | Phase-change accumulation energy heat-exchange system and the method for heating water |
-
2020
- 2020-04-20 CN CN202010311943.1A patent/CN111396739A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091093A (en) * | 1999-09-21 | 2001-04-06 | Toyota Autom Loom Works Ltd | Hydrogen-absorbing indirect heat exchanger |
| CN102008832A (en) * | 2009-09-04 | 2011-04-13 | 中国石油化工集团公司 | Device for directly exchanging heat of oil and gas |
| CN106195611A (en) * | 2016-07-12 | 2016-12-07 | 华北电力大学（保定） | A kind of compressed-air energy-storage system constant temperature heat insulating caisson |
| CN106673098A (en) * | 2016-11-02 | 2017-05-17 | 天津大学 | Mounting method for uniform liquid distribution structure of transverse tube falling film evaporator |
| CN207945830U (en) * | 2018-01-16 | 2018-10-09 | 淮安中大水箱有限公司 | A kind of separate water circulation air source heat pump water box |
| CN109945714A (en) * | 2019-04-23 | 2019-06-28 | 深圳市爱能森科技有限公司 | Phase-change accumulation energy heat-exchange system and the method for heating water |
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