High-temperature heat accumulating type compressed air energy storage system

Abstract

The invention relates to the technical field of energy storage, in particular to a high-temperature heat accumulating type compressed air energy storage system which comprises an air storage chamber, an air compressor, a heat exchanger, a heat storage tank and an expansion machine, the air compressor is arranged on the ground, and the air compressor and the heat exchanger are fixedly connected through an air conveying pipe; the heat exchanger is fixedly connected with the heat storage tank through a heat exchange pipe, and the side, away from the air compressor, of the heat exchanger is fixedly connected with an air inlet pipe. By additionally electrifying the inner surfaces of the dust collection units, induced current can be generated on the inner surfaces of the dust collection units, so that static electricity is generated, small-particle impurities in compressed air are removed through the static electricity, the compressed air can be more compact, and the compressed air can be compressed to be higher in pressure; after compressed air enters the air storage chamber, impurity sinking can be reduced, the situation that the air storage space of the air storage chamber is reduced due to excessive impurity sinking is avoided, more compressed air can be stored in the air storage chamber, the energy storage effect is improved, and the space utilization rate of the air storage chamber is increased.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a high-temperature thermal storage type compressed air energy storage system. Background Art

[0002] The principle of thermal storage compressed air energy storage technology is to combine compressed air with thermal energy to improve system efficiency. The technology first uses electricity to compress air to a high pressure state, then transports the compressed air to a thermal storage device to exchange heat with a high-temperature heat source, thereby storing the air's heat. When the energy is subsequently released, the thermal energy is first converted into mechanical energy, and then the mechanical energy is converted into electrical energy output. Considering that compressed air energy storage usually seals the compressed air at high pressure in the air storage chamber below, but during the process of compressing the air, the air will contain some impurities, the existing technology usually uses a filter to filter the air at the air compressor. If the pore size of the filter is small, it may cause the air to be difficult to circulate and affect the air compression efficiency. Therefore, the existing technology will use a filter with a larger pore size to block the entry of large particles of impurities. However, this will cause some small particles of impurities to enter the air storage chamber through the air inlet pipe, and the small particles of impurities will be suspended in the compressed air, and will cause increased friction between the equipment or pipeline, which may affect the service life of the equipment. Summary of the Invention

[0003] The object of the present invention is to provide a high-temperature thermal storage type compressed air energy storage system to solve the problems raised in the above background technology.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention provides a high-temperature heat storage type compressed air energy storage system, comprising an air storage chamber, an air compressor, a heat exchanger, a heat storage tank and an expander. The air compressor is arranged on the ground, and the air compressor and the heat exchanger are fixedly connected via an air transmission pipe; the heat exchanger and the heat storage tank are fixedly connected via a heat exchange pipe, and an air inlet pipe is fixedly connected to the side of the heat exchanger away from the air compressor, and the air inlet pipe is communicated with the air storage chamber; the heat storage tank and the expander are fixedly connected via a heat conducting pipe; an air outlet pipe is fixedly connected to the side of the expander close to the air compressor, and an expansion pipe is fixedly connected to the side of the expander away from the air outlet pipe, and the expansion pipe is connected to a power generation device; the air outlet pipe is communicated with the air storage chamber, and a filter unit is installed on the part of the air inlet pipe close to the ground; The filter unit includes a filter housing and a filter tube. The top surface of the filter housing is flush with the ground. The middle part of the filter housing is fixedly connected to the filter tube. The bottom of the filter tube is fixedly connected to a filter screen. The inner wall of the filter tube is fixedly connected to four fixed blocks. A plurality of sliding grooves are provided on the surface of the filter tube. A dust suction unit is slidably connected in each of the sliding grooves. The inner surface of the dust suction unit is electrified.

[0005] Furthermore, a filter unit is installed at a portion of the air outlet pipe close to the ground, and the filter unit at the air outlet pipe is installed in an opposite direction to the filter unit at the air inlet pipe.

[0006] Furthermore, the dust collection unit includes an upper cover and a lower cover, both of which are slidably connected to the sliding groove, and the inner surfaces of the upper cover and the lower cover are attached with static electricity. Both sides of the upper cover and the lower cover are fixedly connected with adjustment blocks, and the adjustment blocks are hinged with connecting rods. The middle part of the connecting rod is hinged with an adjustment shaft, and the side of the adjustment shaft away from the connecting rod is rotatably connected to a limit block, and the limit block is fixedly connected to the outer wall of the filter tube; The bottom of the upper cover is fixedly connected with a sliding plate, the top of the lower cover is fixedly connected with a traction plate, a fixed plate is slidably connected between the sliding plate and the traction plate, an elastic sheet is fixedly connected between the upper cover and the lower cover, and the fixed plate is fixedly connected to the outer wall of the filter tube.

[0007] Furthermore, a traction groove is provided at the bottom of the traction plate; an airbag is fixedly connected to one side of the fixed plate close to the elastic sheet, the top of the airbag is slidably connected to the sliding plate, and a traction block is fixedly connected to the bottom of the airbag, and the traction block is fixedly connected to the traction groove.

[0008] Furthermore, an adjusting motor is provided inside the limiting block, and an output end of the adjusting motor is fixedly connected to the adjusting shaft.

[0009] Furthermore, a dust removal unit is fixedly connected to the top of the fixed block, and the dust removal unit includes a bracket, which is fixedly connected to the fixed block, and a power generation module is fixedly connected to the middle of the bracket, and an impeller is rotatably connected to the inner wall of the power generation module, and the impeller is rotatably connected to the bracket, and the top of the impeller is rotatably connected to the filter.

[0010] Furthermore, a plurality of dust outlets are provided on the surface of the impeller, and scrapers are fixedly connected in the dust outlets, and the tops of the scrapers are slidably connected to the filter screen.

[0011] Furthermore, the middle portion of the scraper is inclined toward the dust outlet, a dust inlet is provided on one side of the scraper close to the rotation direction, and a storage chamber is provided inside the impeller.

[0012] Furthermore, the inner surfaces of the air inlet pipe, the air outlet pipe and the filter pipe are only coarsely ground, and the inner surfaces of the air inlet pipe, the air outlet pipe and the filter pipe are rough.

[0013] The present invention has the following beneficial effects: 1. The present invention generates an induced current on the inner surface of the dust collection unit by additionally supplying electricity to the inner surface of the dust collection unit, thereby generating static electricity. Small particles of impurities in the compressed air are removed by static electricity, making the compressed air denser, thereby allowing the compressed air to be compressed to a greater pressure. At the same time, after the compressed air enters the air storage chamber, the occurrence of impurities settling to the bottom can be reduced, avoiding the reduction of the air storage space of the air storage chamber due to excessive impurities settling to the bottom, allowing more compressed air to be stored in the air storage chamber, increasing the energy storage effect, and increasing the space utilization rate of the air storage chamber.

[0014] 2. In the present invention, since static electricity is attached to the inner surfaces of the upper cover and the lower cover, small particles of impurities in the compressed air will be adsorbed by static electricity when the compressed air passes through the upper cover and the lower cover, thereby reducing most of the small particles of impurities in the compressed air, thereby avoiding the damage caused by small particles of impurities entering the power generation equipment. After the compressed air passes through the electrostatic dust suction, the small particles of impurities in the compressed air will be further removed through the filter to ensure that the compressed air entering the expander remains clean, further avoiding the damage of the power generation equipment caused by small particles of impurities.

[0015] 3. The upper cover and the lower cover of the present invention will also block part of the air flow when they are in the filter tube, thereby slowing down the flow rate of the compressed air, so that the impurities in the compressed air can be more completely adsorbed, and the dust collection units are independent individuals and can move independently during dust removal, thereby increasing the instability of the air flow inside the filter tube, thereby causing turbulence when the air flows in the filter tube, and the turbulence can slow down the flow of the compressed air.

[0016] 4. In the present invention, when the filter is clogged, the scraper can scrape off the impurities on the filter when it rotates, and enter the scraper through the dust inlet. At this time, the impurities will move toward the dust outlet through the inclined part in the middle of the scraper, and enter the storage chamber through the dust outlet. At this time, the impurities can be stored, which can increase the duration of the equipment use, thereby keeping the filter fluid to prevent the filter from being clogged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the installation state of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention (excluding the gas storage chamber); Figure 3 This is a structural breakdown diagram of the filter unit of the present invention; Figure 4 This is a cross-sectional view of the filter unit of the present invention; Figure 5 For the present invention Figure 4 A partial enlarged view of the middle part; Figure 6 This is a schematic diagram of the structure of the dust collection unit at the air outlet pipe of the present invention; Figure 7 This is an exploded view of the dust collection unit at the air outlet pipe of the present invention; Figure 8 This is an exploded view of the dust removal unit at the air outlet pipe of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows: In the figure: 1. Air storage chamber; 11. Air compressor; 111. Air transmission pipe; 12. Heat exchanger; 121. Heat exchange pipe; 13. Heat storage tank; 131. Heat conduction pipe; 14. Expander; 15. Air inlet pipe; 16. Air outlet pipe; 17. Expansion pipe; 2. Filter unit; 21. Filter housing; 22. Filter pipe; 23. Filter screen; 24. Fixed block; 3. Dust collection unit; 31. Upper cover; 311. Sliding plate; 32. Lower cover; 321. Traction plate; 322. Traction groove; 33. Adjustment block; 34. Connecting rod; 35. Limit block; 351. Adjustment shaft; 36. Fixed plate; 361. Air bag; 37. Elastic sheet; 4. Dust removal unit; 41. Bracket; 42. Power generation module; 43. Impeller; 431. Storage chamber; 44. Scraper. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] See also Figures 1-8As shown, the present invention is a high-temperature heat storage type compressed air energy storage system, comprising an air storage chamber 1, an air compressor 11, a heat exchanger 12, a heat storage tank 13 and an expander 14, wherein the air compressor 11 is arranged on the ground, and the air compressor 11 and the heat exchanger 12 are fixedly connected via an air transmission pipe 111; the heat exchanger 12 and the heat storage tank 13 are fixedly connected via a heat exchange pipe 121, and the side of the heat exchanger 12 away from the air compressor 11 is fixedly connected to an air inlet pipe 15, and the air inlet pipe 15 is communicated with the air storage chamber 1; the heat storage tank 13 and the expander 14 are fixedly connected via a heat conducting pipe 131; the side of the expander 14 close to the air compressor 11 is fixedly connected to an air outlet pipe 16, and the side of the expander 14 away from the air outlet pipe 16 is fixedly connected to an expansion pipe 17, and the expansion pipe 17 is connected to the power generation equipment; the air outlet pipe 16 is communicated with the air storage chamber 1, and the part of the air inlet pipe 15 close to the ground is installed with a filter unit 2; The filter unit 2 includes a filter housing 21 and a filter tube 22. The top surface of the filter housing 21 is flush with the ground. The middle part of the filter housing 21 is fixedly connected to the filter tube 22. The bottom of the filter tube 22 is fixedly connected with a filter screen 23. The inner wall of the filter tube 22 is fixedly connected with four fixed blocks 24. A plurality of sliding grooves are provided on the surface of the filter tube 22. The dust collection unit 3 is slidably connected in each of the sliding grooves. The inner surface of the dust collection unit 3 is energized.

[0022] In this embodiment, considering that compressed air energy storage usually seals the compressed air at high pressure in the lower air storage chamber 1, but during the air compression process, the air will contain some impurities, the existing technology usually uses a filter to filter the air at the air compressor 11. If the pore size of the filter is small, it may cause difficulty in air circulation and affect the air compression efficiency. Therefore, the existing technology will use a filter with a larger pore size to block the entry of large particles of impurities. However, at this time, some small particles of impurities will enter the air storage chamber 1 through the air inlet pipe 15, and the small particles of impurities will be suspended in the compressed air, and will increase friction between the equipment or pipelines, which may affect the service life of the equipment; When compressing air, the air compressor 11 will filter out large particles of impurities in the air and compress the air at the same time. At this time, the air will generate a large amount of compression heat, which will increase the temperature of the compressed air. At this time, the compressed air is guided to the heat exchanger 12 through the air delivery pipe 111, and the heat is guided to the heat storage tank 13 through the heat exchange pipe 121 by the heat exchanger 12. At this time, the cooled compressed air can enter the air storage chamber 1 through the air inlet pipe 15 for storage. When the compressed air enters the air inlet pipe 15, an induced current can be generated on the inner surface of the dust collection unit 3 by applying electricity, thereby generating static electricity. When the compressed air passes through the dust collection unit 3, the air molecules are ionized, thereby generating a large number of free electrons and ions. When the charged ions collide with small particles of impurities, they will be negatively charged. At this time, the small particles of impurities will move toward the anode under the action of the electric field force, that is, on the inner surface of the dust collection unit 3, so that the small particles of impurities in the compressed air can be adsorbed by static electricity, thereby reducing the small particles of impurities in the compressed air, and at this time, the impurities entering the air storage chamber 1 can be reduced; because the small particles of impurities The impurities can usually be suspended between compressed air. By removing small particles of impurities in the compressed air, the compressed air can be made denser, so that the compressed air can be compressed to a greater pressure. At the same time, after the compressed air enters the air storage chamber 1, the occurrence of impurities settling to the bottom can be reduced, avoiding the reduction of the air storage space of the air storage chamber 1 due to excessive impurities settling to the bottom, so that more compressed air can be stored in the air storage chamber 1, increasing the energy storage effect and increasing the space utilization rate of the air storage chamber 1; after most of the small particles of impurities are removed by electrostatic dust removal, the entry of impurities can be further reduced by the filter 23 to prevent the compressed air from flowing too fast and causing impurities to enter the air storage chamber 1.

[0023] When the compressed air enters the expander 14 through the outlet pipe 16, the compressed air will expand and be heated by the heat storage tank 13 to increase the pressure of the compressed air. At this time, the high-temperature compressed air is introduced into the power generation equipment through the expansion pipe 17, thereby allowing the compressed air to drive the power generation equipment to generate electricity.

[0024] Specifically, the portion of the air outlet pipe 16 close to the ground is installed with the filter unit 2 , and the filter unit 2 at the air outlet pipe 16 is installed in the opposite direction to the filter unit 2 at the air inlet pipe 15 .

[0025] In this embodiment, it is considered that after the air in the air storage chamber 1 is filtered by the filter unit 2 at the air inlet pipe 15, due to the high air flow rate, some small particles of impurities may still not be removed. If the small particles of impurities directly enter the expander 14, they may be broken into smaller particles in the expander 14. When the small particles of impurities enter the power generation equipment through the expansion pipe 17, they may enter the gaps in the power generation equipment, which may not only increase the wear of the power generation equipment, but in severe cases, the impurities may enter the main components of the power generation equipment and cause damage. When compressed air is needed for power generation, the compressed air in the air storage chamber 1 is extracted through the air outlet pipe 16. Since most of the air that can flow out of the air storage chamber 1 with the compressed air is light in mass and is small particle impurities, it is electrostatically adsorbed and dusted by the dust collection unit 3, thereby preventing small particle impurities from entering the power generation equipment and causing damage. After the compressed air passes through the electrostatic dust collection, the small particle impurities in the compressed air will be further removed through the filter 23; when the compressed air enters the expander 14 through the air outlet pipe 16, the compressed air will expand. At this time, the heat stored in the heat storage tank 13 will enter the expander 14 through the heat conduction pipe 131, thereby increasing the temperature of the compressed air and increasing the pressure of the compressed air. At this time, the high-temperature compressed air is introduced into the power generation equipment through the expansion pipe 17, thereby allowing the compressed air to drive the power generation equipment to generate electricity to ensure that the compressed air entering the expander 14 remains clean, further preventing small particle impurities from causing damage to the power generation equipment.

[0026] Specifically, the dust collection unit 3 includes an upper cover 31 and a lower cover 32, both of which are slidably connected to the sliding groove. Static electricity is added to the inner surfaces of the upper cover 31 and the lower cover 32. Adjustment blocks 33 are fixedly connected to both sides of the upper cover 31 and the lower cover 32. The adjustment blocks 33 are hinged to a connecting rod 34. An adjustment shaft 351 is hinged to the middle of the connecting rod 34. The adjustment shaft 351 is rotatably connected to a limit block 35 away from the connecting rod 34. The limit block 35 is fixedly connected to the outer wall of the filter tube 22. A sliding plate 311 is fixedly connected to the bottom of the upper cover 31, and a traction plate 321 is fixedly connected to the top of the lower cover 32. A fixed plate 36 is slidably connected between the sliding plate 311 and the traction plate 321. An elastic sheet 37 is fixedly connected between the upper cover 31 and the lower cover 32. The fixed plate 36 is fixedly connected to the outer wall of the filter tube 22.

[0027] In this embodiment, it is considered that when electrostatic dust removal is performed on compressed air, due to the high flow rate of the compressed air, some compressed air may not be subjected to electrostatic dust removal and directly pass through the filter 23, which may make the filter 23 more likely to be clogged. Since the expander 14 takes time to expand the compressed air, if the compressed air flows too quickly, it will wait in the outlet pipe 16 for the expander 14 to complete the expansion, which will also cause the flow of the compressed air to be intermittent. When the compressed air flows out through the air outlet pipe 16, the compressed air passes through the filter tube 22 and enters the upper cover 31 while flowing in the filter tube 22. When the compressed air enters the upper cover 31, it flows toward the lower cover 32 due to the deformation direction of the elastic sheet 37. When the compressed air passes through the upper cover 31 and the lower cover 32, the small particles of impurities in the compressed air are attracted by static electricity. When the capacity of the compressed air in the dust suction unit 3 reaches a certain value, the compressed air pressure in the dust suction unit 3 increases. At this time, the compressed air will push the lower cover 32, and the lower cover 32 will move toward the filter tube 22, so that the compressed air in the lower cover 32 can be discharged into the filter tube 22. When the lower cover 32 moves outward, the elastic sheet 37 will be deformed. At the same time, the adjusting block 33 will pull the connecting rod 34 to rotate around the adjusting shaft 351, and the connecting rod 34 will drive the upper cover 31 to move outward of the filter tube 22, thereby preventing the compressed air after dust removal from re-entering; when the compressed air in the dust suction unit 3 flows out, due to the reduction in the compressed air pressure, when the compressed air in the filter tube 22 flows, it will push the lower cover 32 to move outward, and through the connecting rod 34, the upper cover 31 will re-enter the filter tube 22 and filter the compressed air again; After long-term use, a large number of small particles of impurities will be covered in the dust collection unit 3, which will lead to a poor dust collection effect, so it needs to be cleaned. Since small particles of impurities are adsorbed by static electricity, they will also fall when the dust collection unit 3 is powered off. At this time, the small particles of impurities in the filter tube 22 and the dust collection unit 3 can be blown out by using the compressed air remaining after power generation. Compared with the electrostatic dust removal of the prior art, the compressed air can be used to remove dust in the dust collection unit 3 with a slower flow rate, which can avoid the situation where the compressed air flow rate is too fast and the impurities cannot be adsorbed. At the same time, the upper cover 31 and the lower cover 32 will also block part of the air flow when they are in the filter tube 22, thereby slowing down the flow rate of the compressed air, so that the impurities in the compressed air can be more completely adsorbed, and the dust collection units 3 are independent individuals and can move independently during dust removal, thereby increasing the instability of the air flow inside the filter tube 22, thereby causing turbulence in the air flow in the filter tube 22, and the turbulence can slow down the flow of compressed air.

[0028] Specifically, a traction groove 322 is provided at the bottom of the traction plate 321; an airbag 361 is fixedly connected to one side of the fixed plate 36 close to the elastic sheet 37, the top of the airbag 361 is slidably connected to the sliding plate 311, and a traction block is fixedly connected to the bottom of the airbag 361, and the traction block is fixedly connected to the traction groove 322.

[0029] In this embodiment, it is considered that when the compressed air moves from the upper cover 31 to the lower cover 32, the setting of the traction plate 321 will cause part of the compressed air to be blocked and retained between the fixing plate 36 and the elastic sheet 37, which may cause the compressed air in this area to be unable to be electrostatically precipitated. At the same time, when the lower cover 32 moves into the filter tube 22, the air flow will also cause the compressed air in this area to flow out, thereby causing the compressed air that has not been electrostatically precipitated to contact the filter 23, making the filter 23 more likely to be clogged. By setting the airbag 361, when compressed air enters from the upper cover 31, it can flow to the lower cover 32 through the surface of the airbag 361 without obstruction, thereby preventing some compressed air from being unable to perform electrostatic dust removal; by setting the traction block and the traction groove 322, the lower cover 32 can be prevented from moving outward by the resistance of the air in the airbag 361. When the pressure of the internal compressed air is large enough, the airbag 361 will be compressed by the force of the compressed air moving into the filter tube 22, thereby increasing the dust removal amount in a single dust collection unit 3; at the same time, when the lower cover 32 is reset, the airbag 361 can assist in reset, thereby making the position of the upper cover 31 and the lower cover 32 more accurate, so as to avoid reset deviation leading to a reduction in the amount of compressed air entering and the amount of dust removed.

[0030] Specifically, an adjusting motor is provided inside the limiting block 35 , and an output end of the adjusting motor is fixedly connected to the adjusting shaft 351 .

[0031] In this embodiment, after compressed air is used to generate electricity, the pressure of the compressed air at the last part is low, which may cause the lower cover 32 to be unable to move into the filter tube 22, or the lower cover 32 to be unable to be reset, resulting in failure to filter the compressed air normally. When the pressure of the compressed air is low, the adjusting shaft 351 is driven to rotate back and forth by the adjusting motor, and the upper cover 31 and the lower cover 32 are swung back and forth through the connecting rod 34, so that the compressed air can flow out of the dust collection unit 3 without pushing the lower cover 32. Since the power generation value provided by the compressed air at this time is not high, and the drop in air pressure will also make it impossible to carry a large amount of impurities, the compressed air at this time can clean the filter tube 22 and the dust collection unit 3.

[0032] Specifically, the top of the fixed block 24 is fixedly connected to the dust removal unit 4, and the dust removal unit 4 includes a bracket 41, and the bracket 41 is fixedly connected to the fixed block 24. The middle part of the bracket 41 is fixedly connected to the power generation module 42, and the inner wall of the power generation module 42 is rotatably connected to the impeller 43, and the impeller 43 is rotatably connected to the bracket 41. The top of the impeller 43 is rotatably connected to the filter 23.

[0033] In this embodiment, the compressed air flows at a high speed. When the compressed air comes into contact with the filter 23, the filter 23 may be abraded. After long-term use, the filter pores of the filter 23 may also be abraded, thereby causing the filtering performance of the filter 23 to deteriorate. Before the compressed air contacts the filter 23, the impeller 43 is set to rotate when the compressed air flows, and the flow rate of the compressed air can be slowed down by the obstruction of the impeller 43 to avoid wear of the filter 23. At the same time, when the impeller 43 rotates, the power generation unit can generate electricity. Since the efficiency of power generation through the impeller 43 is low, the electricity generated at this time can be stored or supplied to the internal equipment for supplementary use, such as electrostatic adsorption or regulating the motor.

[0034] Specifically, a plurality of dust outlets are formed on the surface of the impeller 43 , each of which is fixedly connected to a scraper 44 , and the top of the scraper 44 is slidably connected to the filter 23 .

[0035] In this embodiment, even if the dust collection unit 3 electrostatically absorbs most of the impurities, some impurities may not be absorbed or not completely processed. In this case, the filter 23 is used to perform the final processing of the impurities. However, after long-term use, the filter 23 may become clogged. When the filter 23 is clogged, the filtration efficiency is reduced, and the power generation efficiency is indirectly reduced. When the filter 23 is clogged, the rotation of the impeller 43 can drive the scraper 44 to rotate. When the scraper 44 rotates, it can scrape off the impurities attached to the filter 23 and re-absorb the impurities through the dust suction unit 3, thereby keeping the filter 23 fluid to prevent the filter 23 from being clogged, and at the same time prevent the power generation efficiency from being reduced due to the blockage of the filter 23; when the scraper 44 rotates at high speed following the impeller 43, the air pressure on the side of the scraper 44 away from the rotation direction will drop, and the impurities in the filter hole can be sucked out by the low air pressure, thereby further preventing the filter 23 from being clogged.

[0036] Specifically, the middle portion of the scraper 44 is inclined toward the dust outlet, a dust inlet is provided on one side of the scraper 44 close to the rotation direction, and a storage chamber 431 is provided inside the impeller 43 .

[0037] In this embodiment, it is considered that when impurities are scraped off by the scraper 44 and adsorbed by the dust collection unit 3, the dust collection unit 3 may adsorb too many impurities, resulting in a decrease in the adsorption effect of impurities, thereby making it impossible to normally adsorb impurities in the compressed air. It also causes the subsequent impurities in the compressed air to be filtered only by the filter 23. At this time, scraping them off by the scraper 44 again will cause the impurities to be repeatedly adsorbed on the filter 23 and cannot be completely removed. When the filter 23 is clogged, the impurities on the filter 23 can be scraped off when the scraper 44 rotates, and enter the scraper 44 through the dust inlet. At this time, the impurities will move toward the dust outlet through the inclined part in the middle of the scraper 44, and enter the storage chamber 431 through the dust outlet. At this time, the impurities can be stored, which can increase the duration of the equipment. When cleaning, the impeller 43 can be removed to pour out the internal impurities.

[0038] Specifically, the inner surfaces of the air inlet pipe 15 , the air outlet pipe 16 and the filter pipe 22 are only coarsely ground, and the inner surfaces of the air inlet pipe 15 , the air outlet pipe 16 and the filter pipe 22 are rough.

[0039] In this embodiment, when the compressed air passes through the coarsely ground air inlet pipe 15, air outlet pipe 16 and filter tube 22, some impurities will adhere to the rough surfaces of the air inlet pipe 15, air outlet pipe 16 and filter tube 22, which can reduce the filtering pressure of the dust collection unit 3 and the filter screen 23. At the same time, friction will occur when the compressed air passes through the rough surface, which will cause the compressed air to generate frictional heat, thereby increasing the air pressure of the compressed air. When the compressed air enters the expander 14, it can have a better expansion effect, indirectly increasing the power generation efficiency.

[0040] When using, First, when compressing air, the air is compressed by the air compressor 11. At this time, the air generates a large amount of compression heat, which causes the temperature of the compressed air to rise. At this time, the compressed air is guided to the heat exchanger 12 through the air delivery pipe 111. The heat is then guided to the heat storage tank 13 through the heat exchange pipe 121 by the heat exchanger 12. At this time, the cooled compressed air can enter the air storage chamber 1 through the air inlet pipe 15 for storage. When the compressed air enters the air inlet pipe 15, an induced current can be generated on the inner surface of the dust collection unit 3 by applying electricity, thereby generating static electricity. When the compressed air passes through the dust collection unit 3, the air molecules are ionized, thereby generating a large number of free electrons and ions. When the charged ions collide with small particles of impurities, they will be negatively charged. At this time, the small particles of impurities will move toward the anode under the action of the electric field force, that is, on the inner surface of the dust collection unit 3, so that the small particles of impurities in the compressed air can be adsorbed by static electricity, thereby reducing the small particles of impurities in the compressed air, and at this time, the impurities entering the air storage chamber 1 can be reduced; because the small particles of impurities The particles can usually be suspended between the compressed air. By removing the small impurities in the compressed air, the compressed air can be made denser, so that the compressed air can be compressed to a higher pressure. At the same time, after the compressed air enters the air storage chamber 1, the occurrence of impurities settling to the bottom can be reduced, and the reduction of the air storage space of the air storage chamber 1 due to excessive impurities settling to the bottom can be avoided. The air storage chamber 1 can store more compressed air, increase the energy storage effect, and increase the space utilization rate of the air storage chamber 1. After most of the small impurities are removed by electrostatic dust removal, the filter 23 can further reduce the entry of impurities, so as to prevent the compressed air from flowing too fast and causing impurities to enter the air storage chamber 1. When the capacity of the compressed air in the dust suction unit 3 reaches a certain value, the compressed air pressure in the dust suction unit 3 increases. At this time, the compressed air will push the lower cover 32, and the lower cover 32 will move toward the filter tube 22, so that the compressed air in the lower cover 32 can be discharged into the filter tube 22. When the lower cover 32 moves outward, the elastic sheet 37 will be deformed. At the same time, the adjusting block 33 will pull the connecting rod 34 to rotate around the adjusting shaft 351, and the connecting rod 34 will drive the upper cover 31 to move outward of the filter tube 22, thereby preventing the compressed air after dust removal from re-entering; when the compressed air in the dust suction unit 3 flows out, due to the reduction in the compressed air pressure, when the compressed air in the filter tube 22 flows, it will push the lower cover 32 to move outward, and through the connecting rod 34, the upper cover 31 will re-enter the filter tube 22 and filter the compressed air again; After long-term use, a large number of small particles of impurities will be covered in the dust collection unit 3, which will lead to a poor dust collection effect, so it needs to be cleaned. Since small particles of impurities are adsorbed by static electricity, they will also fall when the dust collection unit 3 is powered off. At this time, the small particles of impurities in the filter tube 22 and the dust collection unit 3 can be blown out by using the compressed air remaining after power generation. Compared with the electrostatic dust removal of the prior art, the compressed air can be used to remove dust in the dust collection unit 3 with a slower flow rate, which can avoid the situation where the compressed air flow rate is too fast and the impurities cannot be adsorbed. At the same time, the upper cover 31 and the lower cover 32 will also block part of the air flow when they are in the filter tube 22, thereby slowing down the flow rate of the compressed air, so that the impurities in the compressed air can be more completely adsorbed, and the dust collection units 3 are independent individuals and can move independently during dust removal, thereby increasing the instability of the air flow inside the filter tube 22, thereby causing turbulence in the air flow in the filter tube 22, and the turbulence can slow down the flow of compressed air.

[0041] Then, by setting the airbag 361, when compressed air enters from the upper cover 31, it can flow to the lower cover 32 through the surface of the airbag 361 without being blocked, thereby preventing part of the compressed air from being unable to perform electrostatic dust removal; by setting the traction block and the traction groove 322, the lower cover 32 can be prevented from moving outward by the resistance of the air in the airbag 361. When the pressure of the internal compressed air is large enough, the airbag 361 will be compressed by the force of the compressed air moving into the filter tube 22, thereby increasing the dust removal capacity within the single dust collection unit 3; at the same time, when the lower cover 32 is reset, the airbag 361 can assist in reset, thereby making the position of the upper cover 31 and the lower cover 32 more accurate, so as to avoid reset deviation resulting in a reduction in the amount of compressed air entering and the amount of dust removed; When the pressure of the compressed air is low, the adjusting shaft 351 is driven to rotate back and forth by the adjusting motor, and the upper cover 31 and the lower cover 32 are swung back and forth through the connecting rod 34, so that the compressed air can flow out of the dust collection unit 3 without pushing the lower cover 32. Since the power generation value provided by the compressed air at this time is not high, and the drop in air pressure will also make it impossible to carry a large amount of impurities, the compressed air at this time can clean the filter tube 22 and the dust collection unit 3.

[0042] Secondly, before the compressed air contacts the filter 23, the impeller 43 is provided to rotate when the compressed air flows, and the obstruction of the impeller 43 can slow down the flow rate of the compressed air, thereby preventing the filter 23 from being worn. At the same time, when the impeller 43 rotates, the power generation unit can generate electricity. Since the efficiency of power generation by the impeller 43 is low, the electricity generated at this time can be stored or supplied to the internal equipment for supplementary use, such as electrostatic adsorption or regulating the motor. When the filter 23 is clogged, the rotation of the impeller 43 drives the scraper 44 to rotate. When the scraper 44 rotates, it scrapes off impurities attached to the filter 23 and re-absorbs the impurities through the dust suction unit 3. This keeps the filter 23 fluid, preventing the filter 23 from being clogged, and also preventing the power generation efficiency from being reduced due to the clog of the filter 23. When the scraper 44 rotates at high speed following the impeller 43, the air pressure on the side of the scraper 44 away from the rotation direction will drop, and the low air pressure can suck out impurities in the filter pores, thereby further preventing the filter 23 from being clogged. When the filter 23 is clogged, the impurities on the filter 23 can be scraped off when the scraper 44 rotates, and enter the scraper 44 through the dust inlet. At this time, the impurities will move toward the dust outlet through the inclined part in the middle of the scraper 44, and enter the storage chamber 431 through the dust outlet. At this time, the impurities can be stored, which can increase the duration of the equipment. When cleaning, the impeller 43 can be removed to pour out the internal impurities.

[0043] Finally, when compressed air is needed for power generation, the compressed air in the air storage chamber 1 is extracted through the air outlet pipe 16. Since most of the impurities that can flow out of the air storage chamber 1 with the compressed air are light and small particles, they are electrostatically adsorbed and removed by the dust collection unit 3, thereby preventing small particles from entering the power generation equipment and causing damage. After the compressed air passes through the electrostatic dust collection, the small particles in the compressed air are further removed by the filter 23 to ensure that the compressed air entering the expander 14 remains clean, further preventing small particles from causing damage to the power generation equipment. When the compressed air passes through the coarsely ground inlet pipe 15, outlet pipe 16 and filter pipe 22, some impurities will adhere to the rough surfaces of the inlet pipe 15, outlet pipe 16 and filter pipe 22, which can reduce the filtering pressure of the dust collection unit 3 and the filter 23. At the same time, friction will occur when the compressed air passes through the rough surface, which will cause the compressed air to generate frictional heat, thereby increasing the air pressure of the compressed air. When the compressed air enters the expander 14, it can have a better expansion effect, indirectly increasing the power generation efficiency. When the compressed air enters the expander 14 through the outlet pipe 16, the compressed air will expand. At this time, the heat stored in the heat storage tank 13 will enter the expander 14 through the heat conduction pipe 131, thereby increasing the temperature of the compressed air and thus increasing the pressure of the compressed air. At this time, the high-temperature compressed air is introduced into the power generation equipment through the expansion pipe 17, thereby allowing the compressed air to drive the power generation equipment to generate electricity.

[0044] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-temperature thermal storage type compressed air energy storage system, comprising an air storage chamber (1), an air compressor (11), a heat exchanger (12), a heat storage tank (13) and an expander (14), characterized in that: The air compressor (11) is arranged on the ground. The air compressor (11) and the heat exchanger (12) are fixedly connected via an air delivery pipe (111); the heat exchanger (12) and the heat storage tank (13) are fixedly connected via a heat exchange pipe (121); an air inlet pipe (15) is fixedly connected to the side of the heat exchanger (12) away from the air compressor (11), and the air inlet pipe (15) is communicated with the air storage chamber (1); the heat storage tank (13) and the expander ( 14) are fixedly connected via a heat conducting pipe (131); the side of the expander (14) close to the air compressor (11) is fixedly connected to an outlet pipe (16), and the side of the expander (14) away from the outlet pipe (16) is fixedly connected to an expansion pipe (17), and the expansion pipe (17) is connected to the power generation equipment; the outlet pipe (16) is communicated with the air storage chamber (1), and the portion of the air inlet pipe (15) close to the ground is installed with a filter unit (2); The filter unit (2) comprises a filter housing (21) and a filter tube (22); the top surface of the filter housing (21) is flush with the ground; the middle portion of the filter housing (21) is fixedly connected to the filter tube (22); the bottom of the filter tube (22) is fixedly connected to a filter screen (23); the inner wall of the filter tube (22) is fixedly connected to four fixed blocks (24); a plurality of sliding grooves are provided on the surface of the filter tube (22); a dust collection unit (3) is slidably connected in each of the sliding grooves; and the inner surface of the dust collection unit (3) is electrically powered.

2. A high-temperature thermal storage compressed air energy storage system according to claim 1, characterized in that: A filter unit (2) is installed at a portion of the air outlet pipe (16) close to the ground, and the filter unit (2) at the air outlet pipe (16) and the filter unit (2) at the air inlet pipe (15) are installed in opposite directions.

3. A high-temperature thermal storage compressed air energy storage system according to claim 2, characterized in that: The dust collection unit (3) comprises an upper cover (31) and a lower cover (32), the upper cover (31) and the lower cover (32) are both slidably connected to the sliding groove, the inner surfaces of the upper cover (31) and the lower cover (32) are both attached with static electricity, the upper cover (31) and the lower cover (32) are both fixedly connected with an adjustment block (33), the adjustment block (33) is hinged with a connecting rod (34), the middle part of the connecting rod (34) is hinged with an adjustment shaft (351), the adjustment shaft (351) is rotatably connected to a limit block (35) away from the side of the connecting rod (34), and the limit block (35) is fixedly connected to the outer wall of the filter tube (22); The bottom of the upper cover (31) is fixedly connected to a sliding plate (311), the top of the lower cover (32) is fixedly connected to a traction plate (321), a fixed plate (36) is slidably connected between the sliding plate (311) and the traction plate (321), an elastic sheet (37) is fixedly connected between the upper cover (31) and the lower cover (32), and the fixed plate (36) is fixedly connected to the outer wall of the filter tube (22).

4. A high-temperature thermal storage compressed air energy storage system according to claim 3, characterized in that: The bottom of the traction plate (321) is provided with a traction groove (322); the fixed plate (36) is fixedly connected to a side of the elastic sheet (37) close to the airbag (361); the top of the airbag (361) is slidably connected to the sliding plate (311); the bottom of the airbag (361) is fixedly connected to a traction block, and the traction block is fixedly connected to the traction groove (322).

5. The high-temperature thermal storage compressed air energy storage system according to claim 3, characterized in that: An adjusting motor is provided inside the limiting block (35), and an output end of the adjusting motor is fixedly connected to the adjusting shaft (351).

6. The high-temperature thermal storage compressed air energy storage system according to claim 1, characterized in that: The top of the fixed block (24) is fixedly connected to a dust removal unit (4), the dust removal unit (4) comprises a bracket (41), the bracket (41) is fixedly connected to the fixed block (24), the middle of the bracket (41) is fixedly connected to a power generation module (42), the inner wall of the power generation module (42) is rotatably connected to an impeller (43), the impeller (43) is rotatably connected to the bracket (41), and the top of the impeller (43) is rotatably connected to the filter screen (23).

7. A high-temperature thermal storage compressed air energy storage system according to claim 6, characterized in that: The surface of the impeller (43) is provided with a plurality of dust outlets, each of which is fixedly connected with a scraper (44), and the top of the scraper (44) is slidably connected to the filter screen (23).

8. The high-temperature thermal storage compressed air energy storage system according to claim 7, characterized in that: The middle portion of the scraper (44) is inclined toward the dust outlet, a dust inlet is provided on one side of the scraper (44) close to the rotation direction, and a storage chamber (431) is provided inside the impeller (43).

9. The high-temperature thermal storage compressed air energy storage system according to claim 1, characterized in that: The inner surfaces of the air inlet pipe (15), the air outlet pipe (16) and the filter pipe (22) are only coarsely ground, and the inner surfaces of the air inlet pipe (15), the air outlet pipe (16) and the filter pipe (22) are rough.

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