CN114810260B - Gravity energy storage system with buffering effect - Google Patents
Gravity energy storage system with buffering effect Download PDFInfo
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- CN114810260B CN114810260B CN202210718050.8A CN202210718050A CN114810260B CN 114810260 B CN114810260 B CN 114810260B CN 202210718050 A CN202210718050 A CN 202210718050A CN 114810260 B CN114810260 B CN 114810260B
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- 230000005484 gravity Effects 0.000 title claims abstract description 101
- 238000004146 energy storage Methods 0.000 title claims abstract description 25
- 230000003139 buffering effect Effects 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 239000011232 storage material Substances 0.000 claims abstract description 21
- 238000005338 heat storage Methods 0.000 claims abstract description 16
- 238000003491 array Methods 0.000 claims abstract description 12
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 12
- 239000012528 membrane Substances 0.000 claims description 27
- 238000004891 communication Methods 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims 2
- 230000001939 inductive effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 7
- 238000000926 separation method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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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
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G3/00—Other motors, e.g. gravity or inertia motors
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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
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
- H02J15/006—Systems for storing electric energy in the form of pneumatic energy, e.g. compressed air energy storage [CAES]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
- H02J15/007—Systems for storing electric energy involving storage in the form of mechanical energy, e.g. fly-wheels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The application provides a gravity energy storage system with a buffering function, which comprises a vertical shaft; the gravity block is movably inserted in the shaft and is in sealed connection with the side wall of the shaft through a sealing piece, the gravity block comprises a shell and a heat storage material filled in the shell, the bottom of the shell is provided with a first vent hole, the top of the shell is connected with an air compressor unit and an air expander unit, the inner wall of the shaft and the outer wall of the shell are correspondingly wound with wire coil arrays, the wire coil arrays on the inner wall of the shaft are sequentially connected with different power supplies, each wire coil on the outer wall of the shell is closed, and alternating current with fixed frequency is applied to the wire coil arrays on the inner wall of the shaft through the power supplies, inducing reverse circulation currents in the wire coil array on the outer wall of the shell to enable two groups of opposite current directions to form reverse electromagnetic fields to the wire coil array, applying upward acting force to the gravity block through the electromagnetic force, when an emergency occurs, the gravity block is quickly decelerated, and the impact kinetic energy to the lower part of the vertical shaft when the vertical shaft falls is reduced.
Description
Technical Field
The application relates to the technical field of electric energy storage, in particular to a gravity energy storage system with a buffering function.
Background
Gravity compressed air energy storage is through setting up the gravity piece in the shaft, pass through seal membrane sealing connection between gravity piece and the shaft, form sealed gas storage chamber in the shaft that is located gravity piece below, a storage for high-pressure gas, let in the gas storage chamber after compressing the air, gravity piece rebound, the gravitational potential energy who turns into the gravity piece with the energy part of compressed air stores, the heat energy that compressed air produced carries out thermal storage through setting up heat exchange unit usually at energy storage in-process, but heat exchange unit's setting makes energy storage system complicated, and when emergency appears, the uncontrolled acceleration rate of gravity piece can lead to the fact great striking to the shaft below.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the purpose of the application is to provide a gravity energy storage system with a buffering effect, a guide coil array is correspondingly wound on the inner wall of a vertical shaft and the outer wall of a gravity block, alternating current with fixed frequency is applied to the coil array on the inner wall of the vertical shaft through a power supply, upward electromagnetic force is generated, when an emergency situation occurs, the gravity block does not move up and down in an uncontrolled manner, the power supply of the coil power supply on the inner wall of the vertical shaft is excited to start up quickly, an electromagnetic field is formed, a reverse electromagnetic field is induced in a coil on the outer wall of the gravity block, the gravity block is decelerated quickly, impact kinetic energy below the vertical shaft when falling is reduced, and heat storage materials filled in the gravity block can directly exchange heat through the heat storage materials, and a heat exchange unit does not need to be arranged additionally.
In order to achieve the above object, the present application provides a gravity energy storage system with a buffering function, which includes a vertical shaft;
a gravity block is movably inserted in the vertical shaft, the gravity block is connected with the side wall of the vertical shaft in a sealing manner through a sealing film, and a gas storage cavity is defined by the gravity block, the sealing film and a space of the vertical shaft below the sealing film;
the gravity block comprises a shell and a heat storage material filled in the shell, a first vent hole communicated with the air storage cavity is formed in the bottom of the shell, and an air compressor unit and an air expansion unit are connected to the top of the shell;
the vertical shaft inner wall with the casing outer wall corresponds the winding has the wire circle array, wire circle array on the vertical shaft inner wall is connected with different power in order, each wire circle of casing outer wall becomes closed circuit certainly, in order to give through the power the alternating current of fixed frequency is applyed to the wire circle array on the vertical shaft inner wall, induces reverse circulation in the wire circle array on the casing outer wall to make behind two sets of opposite current direction wire circle arrays formation reverse electromagnetic field, it is right through the electromagnetic force the ascending effort is applyed to the gravity piece.
Furthermore, two second vent holes are formed in the top of the shell, valves are arranged at the two second vent holes, the two valves are respectively connected with an air inlet channel and an air outlet channel, and the air inlet channel and the air outlet channel are respectively connected with the air compressor unit and the air expansion unit.
Furthermore, isolation nets are arranged at the first vent hole and the second vent hole, so that the heat storage material is blocked by the isolation nets.
Furthermore, a plurality of communicating cavities are formed in the side wall of the bottom of the vertical shaft, and pressure cylinders are arranged at the bottoms of the communicating cavities;
a lever is arranged in the communicating cavity, one end of the lever is hinged with a crank, and the other end of the lever is positioned below the gravity block;
the bottom end of the crank is connected with a piston, the piston is movably inserted into the pressure cylinder, the piston and the pressure cylinder are sealed, a sealed cavity is formed in the pressure cylinder below the piston, and compressible gas is filled in the sealed cavity so as to drive the piston to move downwards by introducing gas into the gas storage cavity, so that one end of the lever is lifted upwards to provide upward auxiliary force for the gravity block.
Further, the pressure cylinder above the piston is filled with viscous pressure fluid to achieve sealing between the piston and the pressure cylinder by the viscous pressure fluid.
Further, a support is arranged in the communication cavity, and the lever is mounted on the support.
Furthermore, the side wall of the bottom end of the shell is provided with an accommodating groove extending to the bottom surface, and one end of the lever extends into the accommodating groove.
Further, the communication chamber is provided with a plurality of levers arranged at equal angles in the communication chamber on the periphery side of the housing, and the pressure cylinder is arranged in each communication chamber.
Further, the vertical shaft is of a cylindrical tubular structure;
the shell is of a cylindrical structure, and a plurality of smooth grooves which are vertically distributed are formed in the periphery of the outer wall surface of the shell;
the seal membrane is established for the cover the outside annular tubular structure of casing, the external diameter of seal membrane equals the internal diameter of shaft, the seal membrane turns over the annular saddle face structure that forms with the inner ring after turning over the upper portion inwards from the centre, turns over the back and obtains the inner ring week side forms the fold arch, the bottom of outer loop with shaft inner wall sealing connection, the bottom of inner ring with the outer wall sealing connection of casing, the fold arch with level and smooth groove laminating.
Furthermore, the annular cylindrical structure of the sealing membrane is a cylindrical surface structure with the upper diameter and the lower diameter being equal.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a partial structural schematic diagram of a gravity energy storage system with a buffering function according to an embodiment of the present application;
fig. 2 is a partial structural schematic diagram of the gravity energy storage system with a buffering function.
In the figure, 1, a shaft; 11. a gas storage cavity; 12. a communicating cavity; 13. a pressure cylinder; 14. sealing the cavity; 15. a viscous pressure fluid; 2. a gravity block; 21. a housing; 22. a heat storage material; 23. a first vent hole; 24. a second vent hole; 25. an isolation net; 26. accommodating grooves; 27. smoothing the groove; 28. a third vent hole; 3. sealing the film; 31. an outer ring; 32. an inner ring; 4. an air compressor unit; 5. an air expander set; 6. a lever; 7. a crank; 8. a piston; 9. and (4) a support.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the application include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Fig. 1 is a schematic structural diagram of a gravity energy storage system with a buffering function according to an embodiment of the present application.
Referring to fig. 1 and 2, the gravity energy storage system with the buffering function comprises a vertical shaft 1, wherein a gravity block 2 is movably inserted into the vertical shaft 1, the gravity block 2 is hermetically connected with the side wall of the vertical shaft 1 through a sealing film 3, and an air storage cavity 11 is enclosed among the gravity block 2, the sealing film 3 and a space of the vertical shaft 1 below the sealing film 3;
the gravity block 2 comprises a shell 21 and a heat storage material 22 filled in the shell 21, a first vent hole 23 communicated with the air storage cavity 11 is formed in the bottom of the shell 21, the top of the shell 21 is connected with an air compressor unit 4 and an air expander unit 5, so that high-temperature and high-pressure air obtained after being compressed by the air compressor unit 4 passes through the heat storage material 22 and then stores heat in the heat storage material 22, then enters the air storage cavity 11 through the first vent hole 23, in the energy release process, the compressed air in the air storage cavity 11 enters the shell 21 and then absorbs the heat stored in the heat storage material 22 when passing through the heat storage material 22, then enters the air expander unit 5 to do work, heat exchange can be achieved through the gravity block 2, a heat exchange unit does not need to be additionally arranged for heat exchange, and space and cost are saved.
In addition, the inner wall of the shaft 1 and the outer wall of the shell 21 are correspondingly wound with wire coil arrays, the wire coil arrays on the inner wall of the shaft 1 are sequentially connected with different power supplies, each wire coil on the outer wall of the shell 21 is closed, so that alternating current with fixed frequency is applied to the wire coil array on the inner wall of the shaft 1 through the power supply, reverse circulation is induced in the wire coil array on the outer wall of the shell 21, after two groups of opposite current directions form a reverse electromagnetic field to the wire coil array, an upward acting force is applied to the gravity block 2 through the electromagnetic force, in the process of compression energy storage, the gravity block 2 needs to be lifted upwards by adopting a lifting measure, alternating current with fixed frequency is applied to the wire coil array on the inner wall of the shaft 1 through the power supply, reverse circulation is induced in the wire coil on the outer wall of the gravity block 2, and after the two groups of opposite current direction wire coils form reverse electromagnetic fields, the gravity block 2 moves upwards through the electromagnetic force, therefore, the lifting force required by the gravity block 2 at the moment of starting is reduced, meanwhile, compressed gas is introduced into the gas storage cavity 11 through the air compressor unit 4, the gravity block 2 moves upwards to the highest limit position, in the energy release process, the gas in the gas storage cavity 11 is introduced into the air expansion unit 5 to do work and generate power, the gravity block 2 moves downwards, the gravitational potential energy of the gravity block 2 is converted into partial electric energy, in addition, the gravity block 2 does not controlled to move downwards in an accelerated mode, the power supply of a coil power supply on the inner wall of the vertical shaft 1 is excited to quickly start power supply and form an electromagnetic field, a reverse electromagnetic field is induced in the coil on the outer wall of the gravity block 2, an upward acting force is formed on the gravity block 2, the gravity block 2 is quickly decelerated, and the impact kinetic energy below the vertical shaft 1 when the gravity block falls is reduced.
In some embodiments, two second air vents 24 are disposed at the top of the housing 21, valves are disposed at the two second air vents 24, the two valves are respectively connected to an air inlet channel and an air outlet channel, the air inlet channel and the air outlet channel are respectively connected to the air compressor unit 4 and the air expander unit 5, so that when compressed air is supplied into the housing 21, the valve at the air inlet channel is opened, the valve at the air outlet channel is closed, the compressed air supplied into the housing 21 enters the air storage chamber 11 through the first air vent 23 after entering the housing 21, when energy is released, the valve at the air inlet channel is closed, the valve at the air outlet channel is opened, and at this time, the compressed air in the air storage chamber 11 can only be supplied into the air expander unit 5 through the air outlet channel after entering the housing 21.
Since the case 21 is filled with the thermal storage material 22, in order to prevent the thermal storage material 22 from spilling through the first vent hole 23 and the second vent hole 24, a separation net 25 may be provided at both the first vent hole 23 and the second vent hole 24 to block the thermal storage material 22 by the separation net 25, in addition, the case 21 may be divided into a cylinder and a cover, the cover is fixed to the top of the cylinder, the first vent hole 23 is provided at the bottom of the cylinder, two second vent holes 24 are opened on the cover, and the separation net 25 is fixed at both the first vent hole 23 and the two second vent holes 24, a mesh on the separation net 25 is smaller than a diameter of the thermal storage material 22, the thermal storage material 22 can be prevented from spilling due to the blocking of the separation net 25, and gas can also pass through a mesh on the separation net 25.
In some embodiments, in order to fully utilize the pressure of the compressed air in the air storage cavity 11 to realize the upward acting force on the gravity block 2, a plurality of communicating cavities 12 are formed in the side wall of the bottom of the shaft 1, a pressure cylinder 13 is arranged at the bottom of the communicating cavities 12, a lever 6 is arranged in the communicating cavities 12, one end of the lever 6 is hinged with a crank 7, the other end of the lever 6 is located below the gravity block 2, a piston 8 is connected to the bottom end of the crank 7, the piston 8 is movably inserted in the pressure cylinder 13, a seal cavity 14 is formed between the piston 8 and the pressure cylinder 13 below the piston 8, the seal cavity 14 is filled with compressible gas, so that the piston 8 is driven to move downwards by introducing gas into the air storage cavity 11, one end of the lever 6 is lifted upwards to provide an upward assisting force for the gravity block 2, that is to say, when compressed air is introduced into the air storage cavity 11, the compressed air in the air storage cavity 11 enters the pressure cylinder 13 above the piston 8 through the communicating cavities 12, piston 8 moves down and compresses compressible gas in pressure cylinder 13 under compressed air's pressure, according to lever principle, piston 8 moves down the in-process and drives the one end downstream of lever 6 through crank 7, the other end of lever 6 perks upwards, the one end rebound in-process that sticks up acts on gravity piece 2 and applys ascending power for gravity piece 2, upwards start for gravity piece 2 and provide the auxiliary force, be convenient for the start-up of gravity piece 2, combined action through lever 6 and wire coil, can improve the effort to the upwards removal of gravity piece 2 greatly, required external force when reducing gravity piece 2 and upwards moving.
In some embodiments, the pressure cylinder 13 above the piston 8 is filled with viscous pressure fluid 15 to achieve sealing between the piston 8 and the pressure cylinder 13 through the viscous pressure fluid 15, and the sealing effect is good by using the fluid, and in the initial state, the gravity of the viscous pressure fluid acting on the piston 8 plus the air pressure in the air storage cavity 11 and the pressure of the compressible gas in the sealing cavity 14 on the piston 8 are balanced, so that the lever 6 is in the horizontal state.
In order to accommodate the operation of the lever 6 in the communication chamber 12, a seat 9 can be provided in the communication chamber 12, the lever 6 being mounted on the seat 9, i.e. the lever 6 can be hinged on the seat 9, so that the junction of the lever 6 and the seat 9 forms a fulcrum.
In some embodiments, the bottom end side wall of the housing 21 is opened with a receiving groove 26 extending to the bottom surface, and the receiving groove 26 may be an annular groove extending to the outer wall of the bottom of the housing 21, so that one end of each of the levers 6 in the plurality of communication cavities 12 can extend into the receiving groove 26, when the lever 6 is raised, close to the end of the weight block 2, it is able to act directly on the housing 21 in the housing groove 26, to apply an upward force to the gravity block 2 and ensure that the compressed air in the housing 21 can still smoothly enter the air storage chamber 11, the first vent hole 23 directly and vertically penetrates through the bottom of the housing 21, the side wall of the first vent hole 23 can be provided with a plurality of third vent holes 28 communicated with the first vent hole 23, the plurality of third vent holes 28 are communicated with the air storage cavity 11, so that the compressed air in the housing 21 can enter the air storage chamber 11 through the first and third vent holes 23 and 28.
In addition, the communication cavity 12 is transversely arranged, a section of the communication cavity 12 is directly and vertically constructed on the side wall of the vertical shaft 1, then a pressure cylinder 13 is arranged on the ground at one end of the communication cavity 12 far away from the vertical shaft 1, and the pressure cylinder 13 and the vertical shaft 1 are both vertically arranged.
In some embodiments, the communication chamber 12 may be provided in plurality, the levers 6 in the plurality of communication chambers 12 are disposed on the periphery side of the housing 21 at equal angles, the pressure cylinder 13 is disposed in each communication chamber 12, an upward acting force can be simultaneously applied to the gravity block 2 through the levers 6 disposed in the plurality of communication chambers 12, and since the levers 6 in the plurality of communication chambers 12 are disposed on the periphery side of the gravity block 2 at equal angles, the upward assisting force of the one ends of the plurality of levers 6 on the gravity block 2 is uniform, and when the plurality of communication chambers 12 are provided, the plurality of accommodating grooves 26 may be correspondingly disposed on the bottom end side wall of the gravity block 2.
It should be noted that the arrangement of the sealing film in the shaft 1 may be various.
As a possible situation, the shaft 1 is a cylindrical barrel-shaped structure, the shell 21 is a cylindrical structure, the periphery of the outer wall surface of the shell 21 is provided with a plurality of smooth grooves 27 which are distributed vertically, wherein the vertical direction is consistent with the axial direction of the shell 21, the sealing membrane 3 is an annular barrel-shaped structure which is sleeved outside the shell 21, the outer diameter of the sealing membrane is equal to the inner diameter of the shaft 1, the sealing membrane is folded inwards from the middle part to form an annular saddle surface structure formed by connecting an outer ring 31 and an inner ring 32, a wrinkled bulge is formed on the periphery of the inner ring 32 obtained after folding, the bottom end of the outer ring 31 is connected with the inner wall of the shaft 1 in a sealing way, the bottom end of the inner ring 32 is connected with the outer wall of the shell 21 in a sealing way, the wrinkled bulge is attached to the smooth grooves 27, because the outer diameter of the shell 21 is smaller than the inner diameter of the sealing membrane, the inner ring 32 formed after folding of the sealing membrane is positioned inside the outer ring 31, the sealing membrane is in a barrel-shaped structure, the folded inner ring 32 is in order to adapt to the size of the circumferential space, wrinkle bulges can appear, the smooth groove 27 is arranged to enable the sealing membrane to be sunken in the smooth groove 27 when being fixed, so that the connection length between the circumferential outer wall of the shell 21 and the sealing membrane is increased, the length of the sealing membrane fixed on the circumferential side of the shell 21 is increased, the outer ring 31 and the inner ring 32 of the sealing membrane are always kept in good fit with the inner wall of the shaft 1 and the outer wall of the shell 21 in the up-and-down moving process of the shell 21, the direct fit combination site of the shell 21 and the sealing membrane is improved, the fit tightness between the sealing membrane and the shell 21 is improved, the outer diameter of the sealing membrane is the same as the inner diameter of the shaft 1, the outer ring 31 of the sealing membrane can be completely fit on the inner wall of the shaft 1, the combination between the outer ring 31 of the sealing membrane and the shaft 1 is tight, and the rigid support is provided for the sealing membrane by utilizing the rigid wall surface, the use safety, the reliability and the service life of the sealing film are improved.
In addition, the annular cylindrical structure of the sealing membrane is a cylindrical surface structure with the upper diameter and the lower diameter being equal, so that the processing of the sealing membrane is convenient.
In addition, after the smooth groove 27 is arranged on the peripheral side of the shell 21, by controlling the depth and the number of the smooth grooves 27, the circumferential length of the shell 21 in the circumferential direction at the smooth groove 27 is increased (for example, the cylinder body of the shell 21 is in a cylindrical structure, the circumferential length of the cross section perpendicular to the axis of the cylindrical structure at the smooth groove 27 is the circumferential length of the shell 21 in the circumferential direction at the smooth groove 27, and the circumferential length of the outer wall of the sealing film in the circumferential direction is the circumferential length of the end face of the outer cylinder of the annular cylindrical structure of the sealing film), the part with the corrugation protrusions of the inner ring 32 can be attached in the smooth groove 27, so that the inner ring 32 is attached to the shell 21, the corrugation protrusions are attached to the smooth groove 27, the shell 21 can support the sealing film, and the use safety, reliability and service life of the sealing film are improved.
The specific gas storage method of the gravity energy storage system with the buffering function described in the above embodiment is as follows:
in the initial state, the gravity of the viscous pressure fluid acting on the piston 8 plus the air pressure in the air storage cavity 11 and the upward pressure of the compressible gas in the sealed cavity 14 on the piston 8 are balanced, so that the lever 6 is in a horizontal state;
when energy is stored, the motor is electrified to drive the air compressor unit 4 to compress air to work, the air at normal temperature and normal pressure is compressed to obtain high-temperature high-pressure air, the high-temperature high-pressure air is introduced into the gravity block 2 to pass through the heat storage material 22, heat is stored in the heat storage material 22 to obtain low-temperature high-pressure air, the low-temperature high-pressure air is introduced into the air storage cavity 11, the compressed air in the air storage cavity 11 enters the pressure cylinder 13 through the communicating cavity 12, downward pressure is applied to the piston 8, the piston 8 moves downwards in the pressure cylinder 13, one end of the lever 6 is pulled downwards during movement through the crank 7, the other end of the lever 6 is lifted upwards, upward auxiliary force is applied to the gravity block 2 during lifting, meanwhile, alternating current with fixed frequency is applied to the lead ring array on the inner wall of the vertical shaft 1 through the power supply, and reverse circulation is induced in the lead ring array on the outer wall of the shell 21, after two groups of opposite current direction guide coil arrays form reverse electromagnetic fields, an upward acting force is applied to the gravity block 2 through the electromagnetic force, the gravity block 2 moves upwards to the highest limit position, one end of the lever 6 close to the gravity block 2 also moves upwards to a certain position in the upward movement process of the gravity block 2 and then stops, and the inclined state is kept;
when releasing energy, the compressed gas in the gas storage cavity 11 enters the gravity block 2 to absorb the heat stored in the heat storage material 22, the obtained high-temperature and high-pressure gas enters the air expansion unit 5 through the gas outlet channel to do work to drive the generator to generate electricity, the gravity block 2 moves downwards, when the gravity block 2 moves to be in contact with the lifted end of the lever 6, the gravity block 2 is supported and buffered by the lifted end of the lever 6, so that the gravity block 2 can slowly move downwards, when an accident happens, the gravity block 2 does uncontrolled accelerated movement downwards, the coil power supply on the inner wall of the shaft 1 is excited to quickly start power supply and form an electromagnetic field, a reverse electromagnetic field is induced in the coil on the outer wall of the gravity block 2, an upward acting force is formed on the gravity block 2, so that the gravity block 2 is quickly decelerated, and the lever 6 also has a certain supporting effect on the gravity block 2, so that the impact kinetic energy to the lower part of the vertical shaft 1 when falling is reduced.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.
Claims (9)
1. A gravity energy storage system with a buffering function is characterized by comprising a vertical shaft;
a gravity block is movably inserted in the vertical shaft, the gravity block is connected with the side wall of the vertical shaft in a sealing manner through a sealing film, and a gas storage cavity is defined by the gravity block, the sealing film and a space of the vertical shaft below the sealing film;
the gravity block comprises a shell and a heat storage material filled in the shell, a first vent hole communicated with the gas storage cavity is formed in the bottom of the shell, and an air compressor unit and an air expansion unit are connected to the top of the shell;
the inner wall of the vertical shaft and the outer wall of the shell are correspondingly wound with wire coil arrays, the wire coil arrays on the inner wall of the vertical shaft are sequentially connected with different power supplies, and each wire coil on the outer wall of the shell is closed, so that alternating current with fixed frequency is applied to the wire coil arrays on the inner wall of the vertical shaft through the power supplies, reverse circulation currents are induced in the wire coil arrays on the outer wall of the shell, and after two groups of opposite current direction wire coil arrays form reverse electromagnetic fields, upward acting force is applied to the gravity block through electromagnetic force;
a plurality of communicating cavities are formed in the side wall of the bottom of the vertical shaft, and pressure cylinders are arranged at the bottoms of the communicating cavities;
a lever is arranged in the communicating cavity, one end of the lever is hinged with a crank, and the other end of the lever is positioned below the gravity block;
the bottom end of the crank is connected with a piston, the piston is movably inserted into the pressure cylinder, the piston and the pressure cylinder are sealed, a sealed cavity is formed in the pressure cylinder below the piston, and compressible gas is filled in the sealed cavity so as to drive the piston to move downwards by introducing gas into the gas storage cavity, so that one end of the lever is lifted upwards to provide upward auxiliary force for the gravity block.
2. The gravity energy storage system with buffering effect according to claim 1, wherein two second ventilation holes are formed in the top of the housing, valves are disposed at the two second ventilation holes, an air inlet channel and an air outlet channel are connected to the two valves, and the air inlet channel and the air outlet channel are connected to the air compressor unit and the air expander unit respectively.
3. The gravity energy storage system with a buffering effect according to claim 2, wherein an isolation mesh is arranged at each of the first vent hole and the second vent hole, so that the heat storage material is blocked by the isolation mesh.
4. The gravity energy storage system with a buffering effect according to claim 1, wherein the pressure cylinder above the piston is filled with a viscous pressure fluid to achieve sealing between the piston and the pressure cylinder by the viscous pressure fluid.
5. The gravity energy storage system with a buffering effect according to claim 1, wherein a seat is provided in the communicating chamber, and the lever is mounted on the seat.
6. The gravity energy storage system with a buffering effect according to claim 1, wherein the bottom end side wall of the housing is provided with a receiving groove extending to the bottom surface, and one end of the lever extends into the receiving groove.
7. The gravity energy storage system with a buffering action according to claim 1, wherein levers in a plurality of said communication chambers are disposed at equal angles on a peripheral side of said housing, and said pressure cylinder is disposed in each of said communication chambers.
8. The gravity energy storage system with a buffering effect according to claim 1, wherein the shaft is of a cylindrical barrel structure;
the shell is of a cylindrical structure, and a plurality of smooth grooves which are vertically distributed are formed in the periphery of the outer wall surface of the shell;
the seal membrane is established for the cover the outside annular tubular structure of casing, the external diameter of seal membrane equals the internal diameter of shaft, the seal membrane turns over the annular saddle face structure that forms with the inner ring after turning over the upper portion inwards from the centre, turns over the back and obtains the inner ring week side forms the fold arch, the bottom of outer loop with shaft inner wall sealing connection, the bottom of inner ring with the outer wall sealing connection of casing, the fold arch with level and smooth groove laminating.
9. The gravity energy storage system with the buffering function according to claim 8, wherein the annular cylindrical structure of the sealing membrane is a cylindrical surface structure with the upper diameter and the lower diameter being equal.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5100112A (en) * | 1990-10-17 | 1992-03-31 | Aichelin Gmbh | Vertical-shaft furnace for the heat-treatment of metallic workpieces |
| CN109973362A (en) * | 2019-03-29 | 2019-07-05 | 西安交通大学 | Compound compression air energy storage systems and method based on the hot salt well of twin-well structure |
| CN113550803A (en) * | 2021-08-12 | 2021-10-26 | 西安热工研究院有限公司 | Air storage device and method for storing energy by gravity compressed air |
| CN114458572A (en) * | 2022-01-05 | 2022-05-10 | 华北电力大学 | Energy storage system combining gravity and compressed air and working method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201306216Y (en) * | 2008-11-27 | 2009-09-09 | 马维锋 | Auxiliary power device of explosive motor |
| CN102255576A (en) * | 2010-05-18 | 2011-11-23 | 朴雪光 | Electric energy accumulator pulse coil magnetic iron piston engine |
| US8535026B2 (en) * | 2010-06-30 | 2013-09-17 | Schlumberger Technology Corporation | Mechanical system for movement along a housing axis |
| DE102016205856A1 (en) * | 2016-04-07 | 2017-10-12 | Delta Energy Gmbh & Co. Kg 1 | Device for storing energy |
| CN110550375B (en) * | 2019-08-01 | 2020-10-30 | 清华大学 | Heat accumulating type compressed air energy storage device |
| CN111237144A (en) * | 2020-01-14 | 2020-06-05 | 中国华能集团有限公司 | Gravity compressed air energy storage system and working method thereof |
| CN112648076B (en) * | 2020-12-22 | 2022-03-01 | 东北大学 | Compressed air energy storage system |
| CN112922814A (en) * | 2021-03-11 | 2021-06-08 | 清华大学 | Compressed air energy storage system and method |
-
2022
- 2022-06-23 CN CN202210718050.8A patent/CN114810260B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5100112A (en) * | 1990-10-17 | 1992-03-31 | Aichelin Gmbh | Vertical-shaft furnace for the heat-treatment of metallic workpieces |
| CN109973362A (en) * | 2019-03-29 | 2019-07-05 | 西安交通大学 | Compound compression air energy storage systems and method based on the hot salt well of twin-well structure |
| CN113550803A (en) * | 2021-08-12 | 2021-10-26 | 西安热工研究院有限公司 | Air storage device and method for storing energy by gravity compressed air |
| CN114458572A (en) * | 2022-01-05 | 2022-05-10 | 华北电力大学 | Energy storage system combining gravity and compressed air and working method thereof |
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