CN216653838U

CN216653838U - Compressed air energy storage device with dehumidification function

Info

Publication number: CN216653838U
Application number: CN202220213281.9U
Authority: CN
Inventors: 闫素英; 徐思杨; 张维蔚; 冯朝卿; 赵晓燕; 佐双吉
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-03
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a compressed air energy storage device with a dehumidification function, which comprises an air storage tank, wherein an air inlet pipe and an air outlet pipe are fixedly arranged on two sides of the air storage tank respectively; an inner sleeve is arranged in the air inlet pipe, a second connecting plate is fixedly arranged at one end of the inner sleeve, and the second connecting plate is also provided with the screw hole; the inner sleeve is internally provided with a filter pipe through a mounting ring, a coarse filter screen and a fine filter screen are arranged in the filter pipe, and a buffer assembly and a dehumidification assembly are arranged in the inner sleeve; according to the utility model, through the arrangement of the coarse filter screen and the fine filter screen, the compressed air can be filtered for multiple times when passing through the filter pipe, so that dust particles in the compressed air can be removed as much as possible, and the working strength of the PP filter element is further reduced.

Description

Compressed air energy storage device with dehumidification function

Technical Field

The utility model relates to the technical field of compressed air energy storage. In particular to a compressed air energy storage device with dehumidification function.

Background

The compressed air energy storage is to utilize the residual electric quantity in the load valley of the electric power system, drive the air compressor by the electric motor, press the air into the airtight large-capacity underground space as the air storage chamber, namely convert the electric energy which can not be stored into the air pressure potential energy of the compressed air which can be stored and store in the air storage chamber. When the generated energy of the system is insufficient, compressed air is mixed with oil or natural gas through the heat exchanger for combustion, and is introduced into the gas turbine to do work for power generation, so that the peak regulation requirement of the power system is met.

Chinese patent document CN211513942U discloses a compressed air physical energy storage device capable of filtering air, including the gas holder, the left center department intercommunication of gas holder has compressed air to advance the pipe, the inner chamber swing joint that compressed air advances the pipe has fixed pipe, the left side fixedly connected with ring baffle of fixed inside pipe wall, ring baffle's inner chamber fixedly connected with cartridge filter, the equal fixedly connected with division board in both sides of fixed inside pipe chamber middle-end, the top of left side division board is inlayed and is had the PP filter core. Through cartridge filter, PP filter core, speed reduction flabellum, meticulous filter screen, honeycomb water trap and buffer board's cooperation use, solved and carrying out the in-process of storing to compressed air, can have harmful substance such as dust and steam in its compressed air, be unfavorable for compressed air's storage, still can make the unstable condition of atmospheric pressure appear in the in-process of its release simultaneously, cause the unstable problem of pneumatic equipment operation.

When the above documents filter compressed air, dust particles can be deposited on the surface of the filter cartridge after long-term accumulation, and cannot be easily cleaned, so that the compressed air can be influenced to enter the air storage tank.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to provide a compressed air energy storage device with a dehumidification function, which can automatically clean a filter screen.

In order to solve the technical problems, the utility model provides the following technical scheme:

a compressed air energy storage device with a dehumidification function comprises an air storage tank, wherein an air inlet pipe and an air outlet pipe are fixedly arranged on two sides of the air storage tank respectively, a first connecting plate is fixedly arranged at one end of the air inlet pipe, and a screw hole is formed in the first connecting plate in a penetrating mode; an inner sleeve is arranged in the air inlet pipe, a second connecting plate is fixedly mounted at one end of the inner sleeve, the second connecting plate is also provided with the screw hole, and the first connecting plate and the second connecting plate are fixedly connected together through a screw; the inner sleeve is internally provided with a filter pipe through a mounting ring, a coarse filter screen and a fine filter screen are arranged in the filter pipe, and a buffer assembly and a dehumidification assembly are arranged in the inner sleeve; a second installation pipe is fixedly installed on the side wall of the filtering pipe, the second installation pipe is in fluid communication with the filtering pipe, a dust outlet pipe is arranged at the bottom of the filtering pipe and is communicated with the filtering pipe, a first electromagnetic valve is arranged inside the filtering pipe, a first differential pressure transmitter is arranged inside the filtering pipe, and a second differential pressure transmitter is arranged on the buffer assembly; a first installation pipe is fixedly installed on the buffer assembly; an electric cabinet is fixedly arranged on the air inlet pipe; the first electromagnetic valve, the first differential pressure transmitter and the second differential pressure transmitter are in signal connection with the electric cabinet.

In the compressed air energy storage device with the dehumidification function, the buffer assembly comprises a first partition plate, a second partition plate, a buffer plate and speed reduction fan blades; the first partition plate and the second partition plate are hermetically arranged in the inner sleeve, the buffer plates are fixedly arranged on the corresponding sides of the first partition plate and the second partition plate, and the buffer plates on the first partition plate and the second partition plate are distributed in a staggered manner; the first partition plate is located the filter tube with between the second partition plate, the speed reduction flabellum set up in first partition plate with between the second partition plate, just the speed reduction flabellum is fixed on interior sheathed tube roof.

According to the compressed air energy storage device with the dehumidification function, the dehumidification assembly comprises a honeycomb water trap, a water outlet pipe and a second electromagnetic valve; the honeycomb water trap penetrates through the second partition plate and is arranged at a position close to the bottom; the bottom wall of the inner sleeve is provided with a first threaded hole in a penetrating mode, the first threaded hole is located between the first partition plate and the second partition plate, the top end of the water outlet pipe penetrates through the bottom wall of the air inlet pipe and is installed in the first threaded hole in a threaded mode, the top end of the water outlet pipe is flush with the inner side wall of the inner sleeve, the second electromagnetic valve is arranged on the water outlet pipe, and the second electromagnetic valve is in signal connection with the electric cabinet.

In the compressed air energy storage device with the dehumidification function, the second differential pressure transmitter is fixedly arranged on one side, close to the filter pipe, of the first partition plate; a PP filter element penetrates through the first partition plate at a position close to the top, the cross-sectional area of the PP filter element is smaller than that of the first installation pipe, and the PP filter element is coaxial with the first installation pipe; and a fourth electromagnetic valve is arranged on the first installation pipe and is in signal connection with the electric cabinet.

According to the compressed air energy storage device with the dehumidification function, the mounting ring is coaxially mounted at one end of the outer surface of the filter pipe, and the filter pipe is fixedly mounted inside the inner sleeve pipe through the mounting ring.

In the compressed air energy storage device with dehumidification function, the first electromagnetic valve is arranged in the middle of the filter pipe, the fine filter screen is arranged at one end, far away from the mounting ring, in the filter pipe, the coarse filter screen is arranged between the fine filter screen and the first electromagnetic valve, and the first differential pressure transmitter is arranged between the coarse filter screen and the first electromagnetic valve; a second threaded hole is formed in the bottom wall of the filter pipe and is located between the first electromagnetic valve and the coarse filter screen, the top end of the dust outlet pipe penetrates through the bottom wall of the air inlet pipe and the bottom wall of the inner sleeve and is in threaded connection with the second threaded hole, and the top end of the dust outlet pipe is flush with the inner surface of the bottom wall of the filter pipe; and a third electromagnetic valve is arranged on the dust outlet pipe and is in signal connection with the electric cabinet.

In the compressed air energy storage device with the dehumidification function, a filter screen penetrates through the top wall of the filter pipe, the filter screen is located between the mounting ring and the first electromagnetic valve, and the second mounting pipe is communicated with the filter pipe through the filter screen; and a fifth electromagnetic valve is arranged on the second installation pipe and is in signal connection with the electric cabinet.

According to the compressed air energy storage device with the dehumidification function, the outer diameter of the inner sleeve is equal to the inner diameter of the air inlet pipe, and the outer diameters of the first connecting plate and the second connecting plate are equal.

Above-mentioned compressed air energy memory with dehumidification function, the inside of interior sleeve pipe is kept away from the one end fixed mounting of filter tube has meticulous filter screen.

Above-mentioned compressed air energy memory with dehumidification function, be provided with the manometer on the gas holder.

The technical scheme of the utility model achieves the following beneficial technical effects:

1. according to the utility model, through the arrangement of the coarse filter screen and the fine filter screen, the compressed air can be filtered for multiple times when passing through the filter pipe, so that dust particles in the compressed air can be removed as much as possible, and the working strength of the PP filter element is further reduced.

2. According to the utility model, by arranging the two pressure difference transmitters, when too many dust particles are adhered to the coarse filter screen and the fine filter screen, the pressure difference transmitters can sense pressure changes and transmit signals to the electric cabinet, and then the electric cabinet can control the first electromagnetic valve and the fourth electromagnetic valve to be closed and control the third electromagnetic valve and the fifth electromagnetic valve to be opened, so that airflow sequentially passes through the second mounting pipe, the fine filter screen and the coarse filter screen are reversely flushed, the dust particles adhered to the upper side are blown off, and finally the airflow and the dust are discharged through the dust outlet pipe, so that the device has the effect of automatically cleaning the filter screens.

3. According to the utility model, the first installation pipe and the fourth electromagnetic valve are arranged on one side of the PP filter element, so that compressed gas in the air storage tank can be prevented from flowing back when the coarse filter screen and the fine filter screen are subjected to reverse flushing.

4. According to the utility model, the dust outlet pipe and the water outlet pipe are arranged on the filter pipe and the inner sleeve in a threaded manner, when the inner sleeve is disassembled and replaced, the dust outlet pipe and the water outlet pipe can be disassembled first, so that the inner sleeve is easier to disassemble.

5. According to the utility model, the flow velocity of the compressed air can be reduced by arranging the buffer component, so that the compressed air passes through the honeycomb water trap at a low speed, a certain protection can be formed on the honeycomb water trap, and the moisture in the compressed air can be discharged as much as possible.

6. According to the utility model, the fine filter screen is arranged, so that the compressed air with dust and moisture removed can be further filtered, and then the residual dust and impurities in the compressed air are removed, so that the compressed air is purer.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of an air inlet pipe according to the present invention.

The reference numbers in the figures denote: 1-a gas storage tank; 2, an air inlet pipe; 3-air outlet pipe; 4-a first connection plate; 5-screw hole; 6-inner sleeve; 7-a second connecting plate; 8-mounting a ring; 9-a filter tube; 10-coarse strainer; 11-fine filter screen; 12-a second mounting tube; 13-a dust outlet pipe; 14-a first solenoid valve; 15-a first differential pressure transmitter; 16-a second differential pressure transmitter; 17-a first mounting tube; 18-an electric cabinet; 19-a first divider plate; 20-a second divider panel; 21-a buffer plate; 22-decelerating fan blades; 23-a honeycomb water trap; 24-a water outlet pipe; 25-a second solenoid valve; 26-PP filter elements; 27-a fourth solenoid valve; 28-a third solenoid valve; 29-filter screen; 30-a fifth solenoid valve; 31-fine filter screen; 32-pressure gauge.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, the compressed air energy storage device with a dehumidification function in this embodiment includes an air storage tank 1, an air inlet pipe 2 and an air outlet pipe 3 are respectively and fixedly installed on two sides of the air storage tank 1, a first connecting plate 4 is fixedly installed at one end of the air inlet pipe 2, and a screw hole 5 is formed in the first connecting plate 4 in a penetrating manner; an inner sleeve 6 is arranged in the air inlet pipe 2, a second connecting plate 7 is fixedly arranged at one end of the inner sleeve 6, a screw hole 5 is also formed in the second connecting plate 7, and the first connecting plate 4 and the second connecting plate 7 are fixedly connected together through screws; a filter pipe 9 is arranged in the inner sleeve 6 through a mounting ring 8, a coarse filter screen 10 and a fine filter screen 11 are arranged in the filter pipe 9, and a buffer assembly and a dehumidification assembly are arranged in the inner sleeve 6; a second mounting pipe 12 is fixedly mounted on the side wall of the filtering pipe 9, the second mounting pipe 12 is in fluid communication with the filtering pipe 9, a dust outlet pipe 13 is arranged at the bottom of the filtering pipe 9, the dust outlet pipe 13 is communicated with the filtering pipe 9, a first electromagnetic valve 14 is arranged inside the filtering pipe 9, a first differential pressure transmitter 15 is arranged inside the filtering pipe 9, and a second differential pressure transmitter 16 is arranged on the buffer assembly; a first mounting pipe 17 is fixedly mounted on the buffer component; an electric cabinet 18 is fixedly arranged on the air inlet pipe 2; the first electromagnetic valve 14, the first differential pressure transmitter 15 and the second differential pressure transmitter 16 are in signal connection with the electric cabinet 18; the buffer assembly comprises a first partition plate 19, a second partition plate 20, a buffer plate 21 and speed reduction fan blades 22; the first partition plate 19 and the second partition plate 20 are hermetically arranged in the inner sleeve 6, the buffer plates 21 are fixedly arranged on the corresponding sides of the first partition plate 19 and the second partition plate 20, and the buffer plates 21 on the first partition plate 19 and the second partition plate 20 are distributed in a staggered manner; the first partition plate 19 is positioned between the filter pipe 9 and the second partition plate 20, the speed reducing fan blades 22 are arranged between the first partition plate 19 and the second partition plate 20, and the speed reducing fan blades 22 are fixed on the top wall of the inner sleeve 6; the dehumidifying component comprises a honeycomb water trap 23, a water outlet pipe 24 and a second electromagnetic valve 25; the honeycomb water trap 23 is arranged on the second partition plate 20 near the bottom in a penetrating way; a first threaded hole is formed in the bottom wall of the inner sleeve 6 in a penetrating mode and located between the first partition plate 19 and the second partition plate 20, the top end of the water outlet pipe 24 penetrates through the bottom wall of the air inlet pipe 2 and is installed in the first threaded hole in a threaded mode, the top end of the water outlet pipe 24 is flush with the inner side wall of the inner sleeve 6, the second electromagnetic valve 25 is arranged on the water outlet pipe 24, and the second electromagnetic valve 25 is in signal connection with the electric cabinet 18; the second differential pressure transmitter 16 is fixedly arranged on one side of the first partition plate 19 close to the filter pipe 9; a PP filter element 26 penetrates through the first partition plate 19 at a position close to the top, the cross-sectional area of the PP filter element 26 is smaller than that of the first mounting pipe 17, and the PP filter element 26 is coaxial with the first mounting pipe 17; a fourth electromagnetic valve 27 is arranged on the first mounting pipe 17, and the fourth electromagnetic valve 27 is in signal connection with the electric cabinet 18; the mounting ring 8 is coaxially mounted at one end of the outer surface of the filter pipe 9, and the filter pipe 9 is fixedly mounted inside the inner sleeve 6 through the mounting ring 8; the first electromagnetic valve 14 is arranged in the middle of the filtering pipe 9, the fine filter screen 11 is arranged at one end, far away from the mounting ring 8, in the filtering pipe 9, the coarse filter screen 10 is arranged between the fine filter screen 11 and the first electromagnetic valve 14, and the first differential pressure transmitter 15 is arranged between the coarse filter screen 10 and the first electromagnetic valve 14; a second threaded hole is formed in the bottom wall of the filtering pipe 9 and is positioned between the first electromagnetic valve 14 and the coarse filter screen 10, the top end of the dust outlet pipe 13 penetrates through the bottom wall of the air inlet pipe 2 and the bottom wall of the inner sleeve 6 and is in threaded connection with the second threaded hole, and the top end of the dust outlet pipe 13 is flush with the inner surface of the bottom wall of the filtering pipe 9; a third electromagnetic valve 28 is arranged on the dust outlet pipe 13, and the third electromagnetic valve 28 is in signal connection with the electric cabinet 18; a filter screen 29 penetrates through the top wall of the filter pipe 9, the filter screen 29 is positioned between the mounting ring 8 and the first electromagnetic valve 14, and the second mounting pipe 12 is communicated with the filter pipe 9 through the filter screen 29; a fifth electromagnetic valve 30 is arranged on the second mounting pipe 12, and the fifth electromagnetic valve 30 is in signal connection with the electric cabinet 18; the outer diameter of the inner sleeve 6 is equal to the inner diameter of the air inlet pipe 2, and the outer diameters of the first connecting plate 4 and the second connecting plate 7 are equal; a fine filter screen 31 is fixedly arranged at one end of the inner sleeve 6 far away from the filter pipe 9; the gas storage tank 1 is provided with a pressure gauge 32.

The working principle is as follows: under the normal air inlet state, the first electromagnetic valve 14 and the fourth electromagnetic valve 27 are in the open state, the fifth electromagnetic valve 30, the third electromagnetic valve 28 and the second electromagnetic valve 25 are in the closed state, when compressed air passes through the coarse filter screen 10 and the fine filter screen 11, most dust particles in the compressed air can be filtered, then the filtered compressed air is further filtered through the PP filter element 26, when the air flow passes through the decelerating fan blades 22, the decelerating fan blades 22 are blown to rotate, so that the flow rate of the air flow is reduced, when the compressed air passes through the plurality of buffer plates 21, the compressed air is further decelerated, then when the compressed air passes through the honeycomb water collector 23, moisture in the compressed air is collected by the honeycomb water collector 23 and then flows into the water outlet pipe 24, after a certain time, the second electromagnetic valve 25 is opened by the electric cabinet 18 to discharge accumulated water, then the electric cabinet 18 controls the second electromagnetic valve 25 to be closed again, finally, the compressed gas enters the gas storage tank 1 through a fine filter screen 31; when too many dust particles are adhered to the coarse filter screen 10 or the fine filter screen 11, the differential pressure transmitter senses pressure change and transmits a signal to the electric cabinet 18, the electric cabinet 18 controls the first electromagnetic valve 14 and the fourth electromagnetic valve 27 to be closed and controls the fifth electromagnetic valve 30 and the third electromagnetic valve 28 to be opened, air flow passes through the second installation pipe 12, the fine filter screen 11 and the coarse filter screen 10 in sequence, the coarse filter screen 10 and the fine filter screen 11 are washed reversely, the dust particles on the coarse filter screen 10 and the fine filter screen 11 are blown off and are discharged from the dust outlet pipe 13 along with the air flow, and after a certain time, the electric cabinet 18 controls the electromagnetic valves to recover to the original positions and continuously inflate the air storage tank 1.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.

Claims

1. The compressed air energy storage device with the dehumidification function is characterized by comprising an air storage tank (1), wherein an air inlet pipe (2) and an air outlet pipe (3) are fixedly installed on two sides of the air storage tank (1) respectively, a first connecting plate (4) is fixedly installed at one end of the air inlet pipe (2), and a screw hole (5) is formed in the first connecting plate (4) in a penetrating mode; an inner sleeve (6) is arranged in the air inlet pipe (2), a second connecting plate (7) is fixedly mounted at one end of the inner sleeve (6), the second connecting plate (7) is also provided with the screw hole (5), and the first connecting plate (4) and the second connecting plate (7) are fixedly connected together through a screw; a filter pipe (9) is arranged in the inner sleeve (6) through a mounting ring (8), a coarse filter screen (10) and a fine filter screen (11) are arranged in the filter pipe (9), and a buffer assembly and a dehumidification assembly are arranged in the inner sleeve (6); a second mounting pipe (12) is fixedly mounted on the side wall of the filtering pipe (9), the second mounting pipe (12) is communicated with the filtering pipe (9) in a fluid mode, a dust outlet pipe (13) is arranged at the bottom of the filtering pipe (9), the dust outlet pipe (13) is communicated with the filtering pipe (9), a first electromagnetic valve (14) is arranged inside the filtering pipe (9), a first pressure difference transmitter (15) is arranged inside the filtering pipe (9), and a second pressure difference transmitter (16) is arranged on the buffer assembly; a first mounting pipe (17) is fixedly mounted on the buffer assembly; an electric cabinet (18) is fixedly arranged on the air inlet pipe (2); the first electromagnetic valve (14), the first differential pressure transmitter (15) and the second differential pressure transmitter (16) are in signal connection with the electric cabinet (18).

2. A compressed air energy storage device with dehumidification function according to claim 1, wherein said buffer assembly comprises a first partition plate (19), a second partition plate (20), a buffer plate (21) and speed reduction fan blades (22); the first partition plate (19) and the second partition plate (20) are hermetically mounted in the inner sleeve (6), the buffer plates (21) are fixedly mounted on the corresponding sides of the first partition plate (19) and the second partition plate (20), and the buffer plates (21) on the first partition plate (19) and the second partition plate (20) are distributed in a staggered manner; the first partition plate (19) is located between the filter pipe (9) and the second partition plate (20), the decelerating fan blades (22) are arranged between the first partition plate (19) and the second partition plate (20), and the decelerating fan blades (22) are fixed on the top wall of the inner sleeve (6).

3. A compressed air energy storage device with dehumidification function as in claim 2, wherein said dehumidification assembly comprises a honeycomb water trap (23), a water outlet pipe (24) and a second solenoid valve (25); the honeycomb water trap (23) is arranged on the second partition plate (20) in a penetrating manner and is close to the bottom; run through on the diapire of interior sleeve pipe (6) and seted up first screw hole, first screw hole is located first division board (19) with between second division board (20), the top of outlet pipe (24) is passed the diapire of intake pipe (2) and threaded mounting are in first threaded hole, just the top of outlet pipe (24) with the inside wall parallel and level of interior sleeve pipe (6), second solenoid valve (25) set up on outlet pipe (24), just second solenoid valve (25) with electric cabinet (18) signal connection.

4. A compressed air energy storage device with dehumidification function according to claim 3, characterized in that said second differential pressure transducer (16) is fixedly mounted on the side of said first partition (19) close to said filtering pipe (9); a PP filter element (26) penetrates through the first partition plate (19) at a position close to the top, the cross sectional area of the PP filter element (26) is smaller than that of the first installation pipe (17), and the PP filter element (26) is coaxial with the first installation pipe (17); a fourth electromagnetic valve (27) is arranged on the first installation pipe (17), and the fourth electromagnetic valve (27) is in signal connection with the electric cabinet (18).

5. A compressed air energy storage device with dehumidification function according to claim 4, characterized in that said mounting ring (8) is coaxially mounted at one end of the outer surface of said filtering pipe (9), said filtering pipe (9) being fixedly mounted inside said inner casing (6) by means of said mounting ring (8).

6. A compressed air energy storage device with dehumidification function according to claim 5, characterized by that said first solenoid valve (14) is arranged in the middle of said filtering pipe (9), said fine screen (11) is arranged at the end of said filtering pipe (9) far from said mounting ring (8), said coarse screen (10) is arranged between said fine screen (11) and said first solenoid valve (14), said first differential pressure transmitter (15) is arranged between said coarse screen (10) and said first solenoid valve (14); a second threaded hole is formed in the bottom wall of the filtering pipe (9), the second threaded hole is located between the first electromagnetic valve (14) and the coarse filter screen (10), the top end of the dust outlet pipe (13) penetrates through the bottom wall of the air inlet pipe (2) and the bottom wall of the inner sleeve (6) and is in threaded connection with the second threaded hole, and the top end of the dust outlet pipe (13) is flush with the inner surface of the bottom wall of the filtering pipe (9); and a third electromagnetic valve (28) is arranged on the dust outlet pipe (13), and the third electromagnetic valve (28) is in signal connection with the electric cabinet (18).

7. A compressed air energy storage device with dehumidification function according to claim 6, characterized in that a screen (29) is arranged on the top wall of said filtering pipe (9) in a penetrating manner, said screen (29) being located between said mounting ring (8) and said first solenoid valve (14), said second mounting pipe (12) being in fluid communication with said filtering pipe (9) through said screen (29); a fifth electromagnetic valve (30) is arranged on the second mounting pipe (12), and the fifth electromagnetic valve (30) is in signal connection with the electric cabinet (18).

8. A compressed air energy storage device with dehumidification function according to claim 7, characterized by that the outer diameter of said inner sleeve (6) is equal to the inner diameter of said inlet pipe (2), and the outer diameters of said first and second connection plates (4, 7) are equal.

9. A compressed air energy storage device with dehumidification function according to claim 8 characterized in that a fine screen (31) is fixedly installed at the end of the inside of said inner sleeve (6) far from said filtering tube (9).

10. A compressed air energy storage device with dehumidification function according to claim 9, characterized in that said air storage tank (1) is provided with a pressure gauge (32).