Compressed air energy storage system capable of replacing filter element on line

Abstract

The utility model belongs to the technical field of gas conveying, and particularly discloses a compressed air energy storage system capable of replacing a filter element on line, which comprises a first air compressor, the first air compressor is connected with a first branch pipe and a second branch pipe through a main pipe, and a buffer gas storage tank and an oil-water separator are arranged on the main pipe. The end part of the first branch pipe is connected with a miscellaneous gas storage tank, and the end part of the second branch pipe is connected with an instrument gas storage tank; a third branch pipe is communicated between the first branch pipe and the second branch pipe, one end of the third branch pipe is connected to the first branch pipe between the first dryer and the miscellaneous gas storage tank, the other end of the third branch pipe is connected to the second branch pipe between the second dryer and the instrument gas storage tank, and a first control valve is arranged on the third branch pipe; according to the compressed air energy storage system, even when the filter element of the air filter is replaced, it can be guaranteed that the two air storage tanks have air for use, normal supply of an air source is guaranteed, follow-up air using equipment is not affected, and production continuity is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas transportation, in particular to a compressed air energy storage system with an online replaceable filter element. Background Art

[0002] Compressed air is widely used as a power source. Compressed air is the second largest power source after electricity, and it is also a process gas source with multiple uses. Its application range covers industries and departments such as petroleum, chemical industry, metallurgy, electricity, machinery, light industry, textile, automobile manufacturing, electronics, food, medicine, biochemistry, national defense, and scientific research. In waste incineration power plants, compressed air is also widely used, such as air for cleaning bag filters, air for lime slurry preparation, air for spray towers, air for activated carbon conveying systems, air for desalted water preparation systems, air for instruments, air for incinerators, and air for purging waste heat boilers.

[0003] Reference Figure 1 The compressed air energy storage system of the prior art comprises a first air compressor (1), the first air compressor (1) is connected to a first branch pipe (3) and a second branch pipe (4) through a main pipe (2), a buffer gas storage tank (201) and an oil-water separator (202) are arranged on the main pipe (2), a first air filter (301) and a first dryer (302) are arranged on the first branch pipe (3), a miscellaneous gas storage tank (10) is connected to the end of the first branch pipe (3), a second air filter (401) and a second dryer (402) are arranged on the second branch pipe (4), and an instrument gas storage tank (11) is connected to the end of the second branch pipe (4). The miscellaneous gas storage tank is mainly used for gas for incinerators, gas for purging of waste heat boilers, etc., and the instrument gas storage tank is mainly used for gas for cleaning dust collectors, gas for lime slurry preparation, gas for spray towers, gas for activated carbon delivery systems, gas for desalted water preparation systems, gas for instruments, etc.

[0004] The filter element of the air compressor needs to be replaced regularly, otherwise the filter element will be clogged, which will cause the air quality entering the gas tank to be substandard, thus affecting the gas-using equipment and seriously damaging the gas-using equipment. When replacing the filter element of the air filter in the compressed air energy storage system of the prior art, it is necessary to shut down the machine and the furnace before replacing the filter element, which affects the continuity of production and reduces work efficiency. Utility Model Content

[0005] In view of the technical problem that the air filter element of the prior art compressed air energy storage system cannot be replaced online, the utility model provides a compressed air energy storage system with online replaceable filter element.

[0006] The technical scheme adopted by the utility model is: a compressed air energy storage system with online replaceable filter element, comprising a first air compressor, the first air compressor is connected to a first branch pipe and a second branch pipe through a main pipe, a buffer air storage tank and an oil-water separator are arranged on the main pipe, a first air filter and a first dryer are arranged on the first branch pipe, a miscellaneous air storage tank is connected to the end of the first branch pipe, a second air filter and a second dryer are arranged on the second branch pipe, and an instrument air storage tank is connected to the end of the second branch pipe; a third branch pipe is connected between the first branch pipe and the second branch pipe, one end of the third branch pipe is connected to the first branch pipe between the first dryer and the miscellaneous air storage tank, and the other end is connected to the second branch pipe between the second dryer and the instrument air storage tank, and a first control valve is arranged on the third branch pipe.

[0007] Furthermore, a third air filter and a fourth air filter are provided on the second branch pipe between the second dryer and the instrument gas storage tank, and the third branch pipe is connected to the second branch pipe between the fourth air filter and the instrument gas storage tank.

[0008] Furthermore, the second air filter is a first-stage flange air filter, the third air filter is a second-stage flange air filter, and the fourth air filter is a third-stage flange air filter.

[0009] Furthermore, the first dryer is a refrigerated compressed air dryer.

[0010] Furthermore, the second dryer is a micro-heat regeneration adsorption compressed air dryer.

[0011] Furthermore, the first branch pipe is connected to a fourth branch pipe, one end of the fourth branch pipe is connected to the first branch pipe between the first air filter and the first dryer, and the other end is connected to the first branch pipe between the first dryer and the miscellaneous air storage tank, and a second control valve is provided on the fourth branch pipe.

[0012] Furthermore, the second branch pipe is connected to a fifth branch pipe, one end of the fifth branch pipe is connected to the second branch pipe between the second air filter and the second dryer, and the other end is connected to the second branch pipe between the second dryer and the third air filter, and a third control valve is arranged on the fifth branch pipe.

[0013] Furthermore, a sixth branch pipe is connected to the main pipe, one end of the sixth branch pipe is connected to the main pipe between the buffer gas storage tank and the oil-water separator, and the other end is connected to the main pipe between the buffer gas storage tank and the first branch pipe. A fourth control valve is arranged on the sixth branch pipe.

[0014] Furthermore, a second air compressor and a third air compressor connected to the main pipe are arranged beside the first air compressor.

[0015] Furthermore, a seventh branch pipe is connected to the main pipe, one end of the seventh branch pipe is connected to the main pipe between the buffer air storage tank and the oil-water separator, and the other end is connected to the main pipe between the oil-water separator and the third air compressor. A fifth control valve is arranged on the seventh branch pipe.

[0016] The beneficial effect of the utility model is that the compressed air energy storage system of the present application can ensure that there is gas available in the two gas storage tanks even when the filter element of the air filter is replaced, thereby ensuring the normal supply of the gas source, not affecting the subsequent gas-using equipment, and ensuring the continuity of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a compressed air energy storage system in the prior art.

[0018] Figure 2 It is a structural schematic diagram of the utility model.

[0019] The markings in the figure are:

[0020] 1. The first air compressor;

[0021] 2. Main pipe; 201. Buffer gas storage tank; 202. Oil-water separator;

[0022] 3. First branch pipe; 301. First air filter; 302. First dryer;

[0023] 4. Second branch pipe; 401. Second air filter; 402. Second dryer; 403. Third air filter; 404. Fourth air filter;

[0024] 5. The third branch pipe; 501. The first control valve;

[0025] 6. The fourth branch pipe; 601. The second control valve;

[0026] 7. The fifth branch pipe; 701. The third control valve;

[0027] 8. The sixth branch pipe; 801. The fourth control valve;

[0028] 9. The seventh branch pipe; 901. The fifth control valve;

[0029] 10. Miscellaneous air storage tank; 11. Instrument air storage tank; 12. Second air compressor; 13. Third air compressor. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The following is combined with Figure 2 The utility model is further described.

[0033] Example

[0034] In order to solve the technical problems existing in the background technology, the utility model provides a compressed air energy storage system with online replaceable filter element.

[0035] The specific technical scheme includes a first air compressor 1, which is connected to a first branch pipe 3 and a second branch pipe 4 through a main pipe 2, a buffer air storage tank 201 and an oil-water separator 202 are arranged on the main pipe 2, a first air filter 301 and a first dryer 302 are arranged on the first branch pipe 3, a miscellaneous air storage tank 10 is connected to the end of the first branch pipe 3, a second air filter 401 and a second dryer 402 are arranged on the second branch pipe 4, and an instrument air storage tank 11 is connected to the end of the second branch pipe 4. The first air compressor 1 delivers the compressed air to the buffer air storage tank 201 through the main pipe 2 for buffering, and then delivers it to the miscellaneous air storage tank 10 and the instrument air storage tank 12 through the first branch pipe 3 and the second branch pipe 4 respectively, the oil-water separator 202 separates the oil and water in the compressed air and plays a preliminary filtering role, the air filter filters the tiny dust in the compressed air, and the dryer is used to filter the moisture in the compressed air. Miscellaneous gas storage tanks are mainly used for gas for incinerators, gas for purging of waste heat boilers, etc. Instrument gas storage tanks are mainly used for gas for cleaning bag dust collectors, gas for lime slurry preparation, gas for spray towers, gas for activated carbon transportation systems, gas for desalted water preparation systems, gas for instruments, etc.

[0036] The above structure is the same as the structure of the compressed air energy storage system in the prior art, and there is a technical problem that the air filter element cannot be replaced online. Therefore, in order to solve the above technical problem, the present application has made the following improvements: Specifically, refer to Figure 2 In the present application, a third branch pipe 5 is connected between the first branch pipe 3 and the second branch pipe 4. One end of the third branch pipe 5 is connected to the first branch pipe 3 between the first dryer 302 and the miscellaneous gas storage tank 10, and the other end is connected to the second branch pipe 4 between the second dryer 402 and the instrument gas storage tank 11. The third branch pipe 5 is provided with a first control valve 501. Instructions for use: The air filter whose filter element needs to be replaced is located on the first branch pipe and the second branch pipe. When the filter element of the air filter on the first branch pipe needs to be replaced, the first branch pipe is cut off by the corresponding valve so that the compressed air no longer enters the first branch pipe, the first control valve 501 is opened, and the compressed air is transported to the instrument air storage tank 11 through the second branch pipe 4. At the same time, part of the compressed air entering the second branch pipe 4 will also be transported to the miscellaneous air storage tank 10 through the third branch pipe 5 and the first branch pipe 3 in sequence; when the filter element of the air filter on the second branch pipe 4 needs to be replaced, the second branch pipe 4 is cut off by the corresponding valve so that the compressed air no longer enters the second branch pipe 4, the first control valve 501 is opened, and the compressed air is transported to the miscellaneous air storage tank 10 through the first branch pipe 3. At the same time, part of the compressed air entering the first branch pipe 3 will also be transported to the miscellaneous air storage tank 10 through the third branch pipe 5 and the second branch pipe 4 in sequence, ensuring that both air storage tanks have gas available and do not affect the continuity of production. It can be seen that after the above-mentioned transformation, the compressed air energy storage system of the present application can ensure that there is gas available in the two gas storage tanks even when the filter element of the air filter is replaced, thereby ensuring the normal supply of the gas source, not affecting the subsequent gas-using equipment, and ensuring the continuity of production.

[0037] In fact, the frequency of replacing the filter element of the air filter is not high, and the time for a single replacement is 10 minutes to 20 minutes, and the replacement time is short. Therefore, even if the air quality required by the miscellaneous air tank 10 and the instrument air tank 11 is different, such a short replacement time will not affect the system.

[0038] Since the miscellaneous gas storage tank 10 and the instrument gas storage tank 11 have different uses, they have different air quality requirements. The instrument gas storage tank 11 has higher air quality requirements. Figure 1Therefore, the present application sets a third air filter 403 and a fourth air filter 404 on the second branch pipe 4 between the second dryer 402 and the instrument gas storage tank 11, and the third branch pipe 5 is connected to the second branch pipe 4 between the fourth air filter 404 and the instrument gas storage tank 11. The second air filter 401 is a first-stage flange air filter, the third air filter 403 is a second-stage flange air filter, and the fourth air filter 404 is a third-stage flange air filter. In addition, according to the different uses of compressed air, the drying methods of the dryers in the two branches of the present application are also different. The first dryer 302 is a refrigerated compressed air dryer, and the second dryer 402 is a micro-heat regeneration adsorption compressed air dryer.

[0039] In order to facilitate maintenance of the first dryer without stopping the machine, refer to Figure 2 In the present application, the first branch pipe 3 is connected with a fourth branch pipe 6, one end of the fourth branch pipe 6 is connected to the first branch pipe 3 between the first air filter 301 and the first dryer 302, and the other end is connected to the first branch pipe 3 between the first dryer 302 and the miscellaneous air storage tank 10, and a second control valve 601 is provided on the fourth branch pipe 6. Under normal conditions, the second control valve 601 is normally closed. When the first dryer 302 needs to be maintained, the valves at both ends of the first dryer 302 are closed, and the second control valve 601 is opened, and the compressed air at this time circulates through the fourth branch pipe 6.

[0040] Similarly, to facilitate maintenance of the second dryer without stopping the machine, refer to Figure 2 In the present application, the second branch pipe 4 is connected with a fifth branch pipe 7, one end of the fifth branch pipe 7 is connected to the second branch pipe 4 between the second air filter 401 and the second dryer 402, and the other end is connected to the second branch pipe 4 between the second dryer 402 and the third air filter 403, and a third control valve 701 is provided on the fifth branch pipe 7. Under normal conditions, the third control valve 701 is normally closed. When the second dryer 402 needs to be maintained, the valves at both ends of the second dryer 402 are closed, and the third control valve 701 is opened, and the compressed air at this time circulates through the fifth branch pipe 7.

[0041] Similarly, in order to facilitate maintenance of the oil-water separator 202 without stopping the machine, refer to Figure 2In this application, a sixth branch pipe 8 is connected to the main pipe 2, one end of the sixth branch pipe 8 is connected to the main pipe 2 between the buffer gas storage tank 201 and the oil-water separator 202, and the other end is connected to the main pipe 2 between the buffer gas storage tank 201 and the first branch pipe 3. A fourth control valve 801 is provided on the sixth branch pipe 8. Under normal conditions, the fourth control valve 801 is normally closed. When the oil-water separator 202 needs to be maintained, the valves at both ends of the oil-water separator 202 are closed, and the fourth control valve 801 is opened. At this time, the compressed air flows through the sixth branch pipe 8.

[0042] Similarly, in order to facilitate maintenance of the buffer gas storage tank 201 without stopping the machine, refer to Figure 2 In this application, a seventh branch pipe 9 is connected to the main pipe 2, one end of the seventh branch pipe 9 is connected to the main pipe 2 between the buffer gas storage tank 201 and the oil-water separator 202, and the other end is connected to the main pipe 2 between the oil-water separator 202 and the third air compressor 13, and a fifth control valve 901 is provided on the seventh branch pipe 9. Under normal conditions, the fifth control valve 901 is normally closed. When the buffer gas storage tank 201 needs to be maintained, the valves at both ends of the buffer gas storage tank 201 are closed, and the fifth control valve 901 is opened, and the compressed air at this time circulates through the seventh branch pipe 9.

[0043] In order to increase the intake volume of compressed air and meet the needs of subsequent air-consuming equipment, the present application further provides a second air compressor 12 and a third air compressor 13 connected to the main pipe 2 beside the first air compressor 1 .

[0044] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A compressed air energy storage system with an online replaceable filter element, comprising a first air compressor (1), the first air compressor (1) being connected to a first branch pipe (3) and a second branch pipe (4) through a main pipe (2), the main pipe (2) being provided with a buffer air storage tank (201) and an oil-water separator (202), the first branch pipe (3) being provided with a first air filter (301) and a first dryer (302), the end of the first branch pipe (3) being connected to a miscellaneous air storage tank (10), the second branch pipe (4) being provided with a second air filter (401) and a second dryer (402), the end of the second branch pipe (4) being connected to an instrument air storage tank (11); characterized in that: A third branch pipe (5) is connected between the first branch pipe (3) and the second branch pipe (4); one end of the third branch pipe (5) is connected to the first branch pipe (3) between the first dryer (302) and the miscellaneous gas storage tank (10), and the other end is connected to the second branch pipe (4) between the second dryer (402) and the instrument gas storage tank (11); and a first control valve (501) is provided on the third branch pipe (5).

2. The compressed air energy storage system with online replaceable filter element according to claim 1, characterized in that: A third air filter (403) and a fourth air filter (404) are provided on the second branch pipe (4) between the second dryer (402) and the instrument gas storage tank (11), and the third branch pipe (5) is connected to the second branch pipe (4) between the fourth air filter (404) and the instrument gas storage tank (11).

3. The compressed air energy storage system with online replaceable filter element as claimed in claim 2, characterized in that: The second air filter (401) is a first-stage flange air filter, the third air filter (403) is a second-stage flange air filter, and the fourth air filter (404) is a third-stage flange air filter.

4. The compressed air energy storage system with online replaceable filter element according to claim 1, characterized in that: The first dryer (302) is a refrigerated compressed air dryer.

5. The compressed air energy storage system with online replaceable filter element according to claim 1, characterized in that: The second dryer (402) is a micro-heat regeneration adsorption compressed air dryer.

6. The compressed air energy storage system with online replaceable filter element according to claim 1, characterized in that: The first branch pipe (3) is connected to a fourth branch pipe (6); one end of the fourth branch pipe (6) is connected to the first branch pipe (3) between the first air filter (301) and the first dryer (302), and the other end is connected to the first branch pipe (3) between the first dryer (302) and the miscellaneous air storage tank (10); and a second control valve (601) is provided on the fourth branch pipe (6).

7. The compressed air energy storage system with online replaceable filter element according to claim 2, characterized in that: The second branch pipe (4) is connected to a fifth branch pipe (7); one end of the fifth branch pipe (7) is connected to the second branch pipe (4) between the second air filter (401) and the second dryer (402), and the other end is connected to the second branch pipe (4) between the second dryer (402) and the third air filter (403); and a third control valve (701) is provided on the fifth branch pipe (7).

8. The compressed air energy storage system with online replaceable filter element according to claim 1, characterized in that: The main pipe (2) is connected to a sixth branch pipe (8), one end of the sixth branch pipe (8) is connected to the main pipe (2) between the buffer gas storage tank (201) and the oil-water separator (202), and the other end is connected to the main pipe (2) between the buffer gas storage tank (201) and the first branch pipe (3), and the sixth branch pipe (8) is provided with a fourth control valve (801).

9. The compressed air energy storage system with online replaceable filter element according to claim 1, characterized in that: A second air compressor (12) and a third air compressor (13) which are connected to the main pipe (2) are also arranged beside the first air compressor (1).

10. The compressed air energy storage system with online replaceable filter element according to claim 9, characterized in that: The main pipe (2) is connected to a seventh branch pipe (9), one end of the seventh branch pipe (9) is connected to the main pipe (2) between the buffer gas storage tank (201) and the oil-water separator (202), and the other end is connected to the main pipe (2) between the oil-water separator (202) and the third air compressor (13), and a fifth control valve (901) is provided on the seventh branch pipe (9).

Images