Filter device for compressed air energy storage

Abstract

The invention relates to a filtering device, in particular to a filtering device for compressed air energy storage. The invention aims to solve the problem that compressed air carries solid particles and moisture after being released from a salt cavern or an artificial chamber. The device is simple in structure, and compressed air released from a salt cavern or an artificial chamber is filtered to separate solid particles and moisture; the filter ensures that the filtered compressed air is clean when entering a subsequent heat exchanger, ensures the safe operation of the heat exchanger in the whole system, eliminates the damage of impurities in the compressed air to the heat exchanger in the system, can effectively solve the problem that the impurities are carried in the compressed air, and is indispensable important equipment in the air energy storage system. The invention belongs to the technical field of compressed air energy storage equipment.

Description

TECHNICAL FIELD

[0001] The application relates to a filtering device, in particular to a filtering device for compressed air energy storage, and belongs to the technical field of compressed air energy storage equipment. BACKGROUND

[0002] Air energy storage is a power generation technology that utilizes compressed air stored in a salt cavern or an artificial cavern, releases the compressed air, heats the compressed air in a heat exchanger, and then enters an expander to do work and output electric energy; at present, the heat exchanger in the field of compressed air energy storage belongs to the new energy industry, and the entire industry is in the emerging stage.

[0003] However, when the salt cavern or the artificial cavern releases the compressed air, solid particles (sand or inorganic salt particles) and moisture (water vapor, fog droplets) in the interior are entrained and released, which causes harm to the heat exchanger in the subsequent heating circuit; in addition, part of the inorganic salt has high corrosiveness after melting, and the sand particles will cause abrasion to the heat exchange tubes of the heat exchanger when impacting the heat exchanger; the compressed air contains moisture, which will cause oxygen corrosion to the subsequent heat exchanger again.

[0004] In view of the above technical problems, how to provide a filtering device has become a problem to be solved by the technical personnel in the field at present. SUMMARY

[0005] The application provides a filtering device for compressed air energy storage.

[0006] The technical scheme of the application is as follows: a filtering device for compressed air energy storage comprises a pressure-bearing tank body.

[0007] A filtering chamber and a partition plate are arranged in the pressure-bearing tank body, and the partition plate divides the pressure-bearing tank body into an upper exhaust chamber and a lower water drainage chamber.

[0008] The pressure-bearing tank body is supported on the ground through a skirt support, and an air inlet pipe, an air outlet pipe, a particle discharge pipe, a drainage pipe and a purge pipe are installed on the pressure-bearing tank body.

[0009] The air inlet pipe is communicated with the filtering chamber, and the air outlet pipe is communicated with the upper exhaust chamber.

[0010] The particle discharge pipe, the drainage pipe and the purge pipe are all communicated with the lower water drainage chamber.

[0011] A stop valve is installed at the outlet of the particle discharge pipe, the inlet height of the drainage pipe is greater than the inlet height of the particle discharge pipe, and a shielding cover is fixedly connected to the inlet of the drainage pipe.

[0012] The filtering chamber comprises a semicircular upper sealing plate, a corrugated plate filter core, a flow guide hopper and two side sealing plates.

[0013] The semicircular upper sealing plate is coaxially fixedly connected to the inner wall of the pressure-bearing tank body.

[0014] The corrugated plate filter element is arranged between two side sealing plates, and the top end of the corrugated plate filter element and the side sealing plate is fixedly connected with a semicircular upper sealing plate.

[0015] The bottom end of the side sealing plate is fixedly connected with a partition plate, and the bottom end of the corrugated plate filter element penetrates through the partition plate.

[0016] A flow guide is arranged below the partition plate, and the flow guide is fixedly connected with the bottom end of the corrugated plate filter element.

[0017] Compared with the prior art, the present application has the following effects:

[0018] The present application has the advantages of simple structure, filtering and separating solid particles and moisture from the compressed air released in the salt cave or artificial chamber, ensuring the cleanliness of the filtered compressed air entering the subsequent heat exchanger, ensuring the safe operation of the heat exchanger in the entire system, eliminating the damage of impurities in the compressed air to the heat exchanger in the system, effectively solving the problem of impurities entrained in the compressed air, and being an indispensable important equipment in the air energy storage system. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the first sectional view of the present application;

[0020] Figure 2 is the second sectional view of the present application;

[0021] Figure 3 is Figure 1 is the enlarged view of I in FIG.

[0022] In the figure: 1, air inlet pipe; 2, air outlet pipe; 3, pressure-bearing tank body; 301, stainless steel inner shell; 302, carbon steel outer shell; 4, corrugated plate filter element; 5, manhole for maintenance; 6, shielding cover; 7, particle discharge pipe; 8, drain pipe; 9, maintenance ladder; 10, safety valve; 11, filter chamber; 12, purging pipe; 13, impact protection baffle; 14, flow guide; 15, semicircular upper sealing plate; 16, partition plate; 17, side sealing plate; 18, skirt type support; 19, purging branch pipe. DETAILED DESCRIPTION

[0023] In order to make the invention purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application.

[0024] Specific implementation method one: in combination with Figures 1 to 3 It is explained that the present embodiment, a compressed air energy storage filtering device of the present embodiment includes a pressure-bearing tank body 3.

[0025] The inside of the pressure tank body 3 is provided with a filter chamber 11 and a partition plate 16, and the partition plate 16 divides the pressure tank body 3 into an upper exhaust chamber and a lower drainage chamber.

[0026] The partition plate 16 is at an angle β with the horizontal plane, and the partition plate 16 is provided with a liquid discharge hole, and the upper exhaust chamber is communicated with the lower drainage chamber through the liquid discharge hole.

[0027] The pressure tank body 3 is supported on the ground by a skirt support 18, and the pressure tank body 3 is provided with an air inlet pipe 1, an air outlet pipe 2, a particle discharge pipe 7, a drainage pipe 8 and a purge pipe 12.

[0028] The air inlet pipe 1 is communicated with the filter chamber 11, and the air outlet pipe 2 is communicated with the upper exhaust chamber.

[0029] The particle discharge pipe 7, the drainage pipe 8 and the purge pipe 12 are all communicated with the lower drainage chamber.

[0030] A stop valve is installed at the outlet of the particle discharge pipe 7, the inlet height of the drainage pipe 8 is higher than the inlet height of the particle discharge pipe 7, and a shielding cover 6 is fixedly connected at the inlet of the drainage pipe 8, and a water pump is installed at the outlet of the drainage pipe 8, and the liquid in the lower drainage chamber is pumped out by the water pump.

[0031] The filter chamber 11 includes a semicircular upper sealing plate 15, a corrugated plate filter core 4, a flow guide hopper 14 and two side sealing plates 17.

[0032] The semicircular upper sealing plate 15 is coaxially fixedly connected to the inner wall of the pressure tank body 3.

[0033] The corrugated plate filter core 4 is arranged between the two side sealing plates 17, and the top ends of the corrugated plate filter core 4 and the side sealing plates 17 are fixedly connected to the semicircular upper sealing plate 15.

[0034] The bottom ends of the side sealing plates 17 are fixedly connected to the partition plate 16, and the bottom end of the corrugated plate filter core 4 penetrates through the partition plate 16.

[0035] The flow guide hopper 14 is arranged below the partition plate 16, and the flow guide hopper 14 is fixedly connected to the bottom end of the corrugated plate filter core 4.

[0036] Specific implementation method two: combined Figures 1 to 3 In this embodiment, a safety valve 10 is installed on the top of the pressure tank body 3; preferably, the safety valve 10 is a spring full-opening safety valve.

[0037] Further, two manholes 5 are opened on the tank wall of the pressure tank body 3; one of the manholes 5 is communicated with the upper exhaust chamber, and the other manhole 5 is communicated with the lower drainage chamber, so that the upper manhole 5 is used for replacing the corrugated plate filter core 4, and the lower manhole 5 is used for cleaning the solid particles accumulated and caked in the lower drainage chamber in cooperation with the maintenance ladder 9.

[0038] Further, a maintenance ladder 9 is installed on the outer wall of the pressure tank 3.

[0039] The other components and connection relationships are the same as in the first embodiment.

[0040] Embodiment Three: Combination Figures 1 to 3 In this embodiment, the pressure tank 3 comprises a stainless steel inner shell 301 and a carbon steel outer shell 302, and the stainless steel inner shell 301 is coaxially embedded in the carbon steel outer shell 302. In this way, the inorganic salt melt water is prevented from causing rust or oxygen corrosion to the pressure tank 3 by the stainless steel inner shell 301.

[0041] The other components and connection relationships are the same as in the first or second embodiment.

[0042] Embodiment Four: Combination Figures 1 to 3 In this embodiment, the pressure tank 3 further comprises an anti-impact baffle 13.

[0043] The anti-impact baffle 13 is arranged at the outlet of the flow guide hopper 14, and the anti-impact baffle 13 is fixedly connected to the lower surface of the partition plate 16.

[0044] The other components and connection relationships are the same as in the first, second or third embodiment.

[0045] Embodiment Five: Combination Figures 1 to 3 In this embodiment, the pressure tank 3 further comprises a purge branch pipe 19, one end of the purge branch pipe 19 is in communication with the particle discharge pipe 7, and the other end of the purge branch pipe 19 is provided with a stop valve. The other components and connection relationships are the same as in the first, second, third or fourth embodiment.

[0046] Embodiment Six: Combination Figures 1 to 3 In this embodiment, the air inlet pipe 1, the air outlet pipe 2, the particle discharge pipe 7, the drain pipe 8, the maintenance manhole 9 and the purge pipe 12 are all connected to the pressure tank 3 by welding.

[0047] Further, the purge branch pipe 19 is connected to the particle discharge pipe 7 by welding.

[0048] Further, the safety valve 10 is connected to the pressure tank 3 by a flange.

[0049] Further, the semicircular upper sealing plate 15 and the side sealing plate 17 are both connected to the corrugated plate filter core 4 by bolts. In this way, the corrugated plate filter core 4 can be periodically replaced, and the removed corrugated plate filter core 4 can be taken out from the maintenance manhole 5.

[0050] The other components and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.

[0051] Working Principle

[0052] The compressed air containing solid particles and moisture is released in a salt cave or artificial cavern, enters the filter chamber 11 through the air inlet pipe 1, and then enters the upper exhaust chamber, and is then delivered to the heat exchanger through the air outlet pipe 2.

[0053] The moisture in the compressed air is continuously attached on the corrugated plate filter core 4 when passing through the corrugated plate filter core 4, and the water vapor and mist droplets are gathered into water droplets, and finally flow into the continuous water flow along the corrugated plate filter core 4 and the flow guide hopper 14 due to the gravity effect.

[0054] Similarly, the solid particles are more difficult to pass through the corrugated plate filter core 4, and are attached on the corrugated plate filter core 4, and are finally brought into the lower drainage chamber by the water flow formed by the moisture. Since the pressure in the filter chamber 11 is high, the water flow and the solid particles are in the form of a jet flow when they are separated from the flow guide hopper 14. An anti-impact baffle 13 is arranged at the outlet of the flow guide hopper 14 to avoid the impact of the solid particles on the inner wall of the pressure tank body 3. Correspondingly, a shielding cover 6 is fixed on the drainage pipe 8 to prevent the solid particles from falling into the drainage pipe 8.

[0055] Since the inlet height of the drainage pipe 8 is greater than the inlet height of the particle discharge pipe 7, the solid particles are discharged from the pressure tank body 3 through the particle discharge pipe 7, and are cleaned by the cooperation of the blowpipe 12 and the blowpipe branch pipe 19. The solid particles in the lower drainage chamber are discharged regularly to prevent the pipelines from being blocked, and the solid particles accumulated in the lower drainage chamber are cleaned through the manhole 5. The liquid in the lower drainage chamber is discharged from the pressure tank body 3 through the drainage pipe 8.

[0056] The present application has been disclosed in the above-mentioned preferred embodiments, but is not intended to limit the present application. Any modification, equivalent change and modification of the above-mentioned embodiments according to the technical essence of the present application without departing from the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A filter device for compressed air energy storage, characterized by: The pressure tank body (3) is supported on the ground through a skirt support (18), and the pressure tank body (3) is provided with an air inlet pipe (1), an air outlet pipe (2), a particle discharge pipe (7), a drainage pipe (8) and a purge pipe (12). The air inlet pipe (1) is in communication with the filter chamber (11), and the air outlet pipe (2) is in communication with the upper exhaust chamber. The particle discharge pipe (7), the drainage pipe (8) and the purge pipe (12) are all in communication with the lower drainage chamber. The particle discharge pipe (7) is provided with a stop valve at the outlet thereof, the inlet of the drainage pipe (8) is higher than the inlet of the particle discharge pipe (7), and a shielding cover (6) is fixedly connected to the inlet of the drainage pipe (8). The filter chamber (11) comprises a semicircular upper sealing plate (15), a corrugated plate filter core (4), a flow guide hopper (14) and two side sealing plates (17). The semicircular upper sealing plate (15) is coaxially fixedly connected to the inner wall of the pressure tank body (3). The corrugated plate filter core (4) is arranged between the two side sealing plates (17), and the top ends of the corrugated plate filter core (4) and the side sealing plates (17) are fixedly connected to the semicircular upper sealing plate (15). The bottom ends of the side sealing plates (17) are fixedly connected to the partition plate (16), and the bottom end of the corrugated plate filter core (4) penetrates through the partition plate (16). The flow guide hopper (14) is arranged below the partition plate (16), and the flow guide hopper (14) is fixedly connected to the bottom end of the corrugated plate filter core (4). The partition plate (16) forms an angle β with the horizontal plane, and a liquid accumulation discharge hole is formed in the partition plate (16), and the upper exhaust chamber is in communication with the lower drainage chamber through the liquid accumulation discharge hole. The pressure tank body (3) is supported on the ground through a skirt support (18), and the pressure tank body (3) is provided with an air inlet pipe (1), an air outlet pipe (2), a particle discharge pipe (7), a drainage pipe (8) and a purge pipe (12).

2. The filtering device for compressed air energy storage of claim 1, wherein: The pressure tank body (3) is provided with two manholes (5) on the tank wall thereof; one of the manholes (5) is in communication with the upper exhaust chamber, and the other manhole (5) is in communication with the lower drainage chamber.

3. The compressed air energy storage filter apparatus of claim 1, wherein: The pressure tank body (3) is provided with a manhole ladder (9) on the outer wall thereof. The pressure tank body (3) is provided with a safety valve (10) on the tank top thereof.

4. The compressed air energy storage filter apparatus of claim 1, wherein: The safety valve (10) is a spring full-opening safety valve.

5. The compressed air energy storage filter apparatus of claim 4, wherein: The pressure tank body (3) comprises a stainless steel inner shell (301) and a carbon steel outer shell (302), and the stainless steel inner shell (301) is coaxially embedded in the carbon steel outer shell (302).

6. The compressed air energy storage filter apparatus of claim 5, wherein: ​ 7. The compressed air energy storage filter apparatus of claim 6, wherein: ​ 8. The compressed air energy storage filter apparatus of claim 7, wherein: ​ 9. The compressed air energy storage filter of claim 1, wherein: ​

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