CN107715578B - Off-line back-blowing cleaning device and method for air filter element of gas compressor of gas turbine - Google Patents
Off-line back-blowing cleaning device and method for air filter element of gas compressor of gas turbine Download PDFInfo
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- CN107715578B CN107715578B CN201711195552.2A CN201711195552A CN107715578B CN 107715578 B CN107715578 B CN 107715578B CN 201711195552 A CN201711195552 A CN 201711195552A CN 107715578 B CN107715578 B CN 107715578B
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- filter element
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- purging
- air filter
- cover plate
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- 238000004140 cleaning Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000007664 blowing Methods 0.000 title abstract description 8
- 238000010926 purge Methods 0.000 claims abstract description 54
- 239000000428 dust Substances 0.000 claims abstract description 45
- 238000003860 storage Methods 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010408 sweeping Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
- B01D41/04—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids of rigid self-supporting filtering material
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a cleaning device and a cleaning method for an air filter element of a gas compressor of a gas turbine, and belongs to the field of overhauling of gas compressors of gas turbines; the technical problem to be solved is to provide a quick back-blowing cleaning device under the condition of offline disassembly of an air filter element; the technical scheme adopted for solving the technical problems is as follows: an upper cover plate and a lower cover plate are arranged in a sealed cleaning box, a plurality of air filter elements are fixed through the upper cover plate and the lower cover plate, a purging pipeline is led into the air filter elements, meanwhile, a dust discharge pipe is arranged in the cleaning box, and dust at the purging position is sucked away by a dust collector during purging; the invention can be widely applied to the field of overhauling the gas compressor of the gas turbine.
Description
Technical Field
The invention relates to an off-line back-blowing cleaning device and a cleaning method for an air filter element of a gas compressor, belonging to the technical field of overhauling of gas compressors.
Background
Due to the requirements of ecological economic construction development and the requirements of environment protection advocated greatly, in order to meet the requirements of urban civil heat supply and industrial heat supply, in suburban development of gas turbine heat supply power plants, namely gas-steam combined cycle heat supply units, in large-medium cities and ground cities, the gas turbine compressor is a large axial-flow fan with a coaxial gas turbine, is one of three parts of the gas turbine, provides combustion air and cooling air for each blade of the gas turbine, has very small gap of cooling air channels of the blades of the gas turbine, has very high requirements on the cleanliness degree of the air, otherwise can cause the blockage of cooling air channels of the blades, and affects the safe operation of the gas turbine.
In order to ensure air quality, a large number of cylindrical or circular truncated cone-shaped filter elements are arranged at the inlet of the gas compressor of each manufacturer, an online back-blowing cleaning device is arranged, the section of the inlet of the gas compressor is about 21 multiplied by 13 m, the space is large, when the gas compressor operates, the negative pressure of the inlet of the gas compressor is about-20 kPa, the suction force is very large, and from the practical operation, purge air is counteracted by the negative pressure air very quickly, so that the next dust is purged temporarily, and the dust is adsorbed on the filter elements again very quickly under the action of huge negative pressure, so that cleaning failure is caused, and in order to ensure the safe operation of the gas compressor, the new filter elements can be replaced only periodically, thus the workload is increased, and the working cost is increased.
Taking 300MW F-level gas engine compressors as an example, the number of the general inlet air filter elements is about 1800, the price of the filter elements is about 500 yuan/unit, and from practical experience, in northern dry dusty areas, the use time is about half a year, so that the blockage is particularly serious, if the surrounding dust environment of a gas turbine power plant is bad, the use time is shorter, although the design service life of the air filter elements is about 2 years, if the filter elements are replaced according to the practical use condition in a low period, the economic cost of a power plant is very high, and from practical view, the performance of a plurality of filter elements is good when being replaced, the filter elements are influenced by dirt, and the filter elements can be normally used after being cleaned, but the conventional enterprises adopt a manual sweeping method to sweep the disassembled air filter elements, so that the labor efficiency is reduced, the labor time is increased, and the labor cost is increased.
Disclosure of Invention
The invention overcomes the defects existing in the prior art and provides the quick back-blowing cleaning device under the condition of offline disassembly of the air filter element.
In order to solve the technical problems, the invention adopts the following technical scheme: the cleaning device comprises a cleaning box, an upper cover plate is arranged above an inner cavity of the cleaning box, a lower cover plate is arranged below the inner cavity of the cleaning box, a plurality of upper filter element trays are arranged on the upper cover plate, a plurality of lower filter element trays are arranged on the lower cover plate, the upper filter element trays and the lower filter element trays are coaxially arranged, a purging branch pipe is arranged between the upper filter element trays and the lower filter element trays, a purging nozzle is arranged on the purging branch pipe, a supporting table is arranged below the lower cover plate, a sliding rail is arranged on the supporting table, and pulleys are arranged between the lower cover plate and the supporting table;
the cleaning cavity is internally provided with a dust discharge pipe, the cleaning cavity is externally provided with a dust collector, and the dust discharge pipe is connected with the dust collector.
The air inlet end of the purging branch pipe is provided with an air storage tank, and the air storage tank is connected with the purging branch pipe through an air pipe.
The blowing nozzles are arranged on the blowing branch pipes in a staggered manner in the circumferential direction of 360 degrees.
The filter element is characterized in that an upper tray rubber pad is arranged below the upper tray of the filter element, and a lower tray rubber pad is arranged above the lower tray of the filter element.
The dust discharge pipe is provided with a check valve.
The air filter cleaning device also comprises a lifting mechanism, wherein the lifting mechanism is arranged in the inner cavity of the cleaning box, and can be arranged above the upper cover plate and connected with the upper cover plate, and also can be arranged below the supporting table and connected with the supporting table, and can be an electric lifting mechanism, a pneumatic lifting mechanism or a hydraulic lifting mechanism.
The cleaning box is a closed box body, a sealing door is arranged on one side of the box body of the cleaning box, and a locking device is arranged on the sealing door.
The inner wall of the cleaning box is provided with a positioning mechanism.
A differential pressure gauge is arranged between the dust discharge pipe and the air pipe.
The purging method for the air filter element of the gas compressor of the gas turbine comprises the following steps:
(1) Storing compressed air in an air storage tank;
(2) The air filter element is fixed on a filter element lower tray, the air filter element is sent into the cleaning box through a sliding rail, and the air filter element is fixed between the filter element upper tray and the filter element lower tray through a lifting mechanism;
(3) Compressed air is sent into the purging branch pipe through the air pipe by the air storage tank, the air filter core is purged through the purging nozzle, and meanwhile, the dust collector is started to collect dust;
(4) After purging, closing the air storage tank and the dust collector, opening the cleaning box, releasing the fixation of the air filter element between the upper filter element tray and the lower filter element tray through the lifting mechanism, and taking out the air filter element through the sliding rail;
the compressed air stored in the air storage tank can be hot air or normal-temperature air.
Compared with the prior art, the invention has the following beneficial effects.
1. Through inclosed cleaning case, set up in cleaning incasement and sweep branch pipe and dust exhaust pipe, set up the differential pressure gauge simultaneously between dust exhaust pipe and air pipe, can carry out the dust absorption when sweeping, ensure simultaneously that cleaning incasement portion is the differential pressure and sweep, ensure to sweep the quality, effectively avoid the secondary pollution when sweeping, and the dust catcher clearance dust operation maintenance is simple.
2. The device is simple to operate and maintain, and can clean a plurality of air filter elements simultaneously, so that the labor productivity is greatly improved.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a schematic structural view of embodiment 2 of the present invention.
FIG. 3 is a top view of the support table of the present invention.
In the figure, a cleaning box 1, an upper cover plate 2, a lower cover plate 3, a supporting table 4, a lifting mechanism 5, a limiting device 6, a positioning mechanism 7, a dust discharge pipe 8, a dust collector 9, a check valve 10, an air pipe 11, an air storage tank 12, an upper filter element tray 13, a lower filter element tray 14, a purging branch pipe 15, a purging nozzle 16, a sealing door 17, a locking device 18, a pulley 19, a differential pressure gauge 20, a heater 21 and a sliding rail 22 are arranged.
Detailed Description
As shown in fig. 1 and 3, the cleaning device for the air filter element of the gas turbine compressor comprises a cleaning box 1, wherein an upper cover plate 2 is arranged above the inner cavity of the cleaning box 1, a lower cover plate 3 is arranged below the inner cavity of the cleaning box 1, a plurality of filter element upper trays 13 are arranged on the upper cover plate 2, a plurality of filter element lower trays 14 are arranged on the lower cover plate 3, the filter element upper trays 13 and the filter element lower trays 14 are coaxially arranged, a purging branch pipe 15 is arranged between the filter element upper trays 13 and the filter element lower trays 14, a purging nozzle 16 is arranged on the purging branch pipe 15, a supporting table 4 is arranged below the lower cover plate 3, a sliding rail 22 is arranged on the supporting table 4, a pulley 19 is arranged between the lower cover plate 3 and the supporting table 4, a dust discharge pipe 8 is arranged inside the cleaning box 1, a dust collector 9 is arranged outside the cleaning box 1, the dust discharge pipe 8 is connected with the dust collector 9, the air inlet end of the purging branch pipe 15 is provided with an air storage tank 12, the air storage tank 12 is connected with the purging branch pipe 15 through an air pipe 11, a purging nozzle 16 is arranged in a staggered mode in the circumferential direction of 360 degrees on the purging branch pipe 15, an upper tray rubber pad is arranged below a filter element upper tray 13, a lower tray rubber pad is arranged above a filter element lower tray 14, a check valve 10 is arranged on a dust discharge pipe 8, the cleaning box 1 is a closed box body, a sealing door 17 is arranged on one side of the box body of the cleaning box 1, a locking device 18 is arranged on the sealing door 17, a positioning mechanism 7 is arranged on the inner wall of the cleaning box 1, a differential pressure gauge 20 is arranged between the dust discharge pipe 8 and the air pipe 11, a lifting mechanism 5 is arranged below a supporting table 4, and the lifting mechanism 5 can be an electric lifting mechanism, a pneumatic lifting mechanism or a hydraulic lifting mechanism.
When the invention is used, the air storage tank 12 is connected with a compressed air source, the compressed air source enters the air storage tank 12 after being heated by the heater 21, the air storage tank 12 plays a role of air buffering, the pressure stability of a purging air source is ensured, the purging effect is ensured, the air pipe 11 between the outlet of the air storage tank 12 and the purging branch pipe 15 is provided with a pressure regulating valve, a pressure gauge, a quick-closing valve, a thermometer and a flowmeter in a matching way, the downstream pressure is regulated by the pressure regulating valve, the pressure stability is ensured, the automatic quick-opening and closing valve is realized by remote operation of the quick-closing valve, the purging air source temperature is controlled by the thermometer, the purging flow is monitored by the flowmeter, the purging ventilation effect is ensured, an air filter element to be purged is arranged between the filter element upper tray 13 and the filter element lower tray 14 under the condition that the pressure of the front end is constant is ensured, the supporting table 4 is lifted by the lifting mechanism 5, the filter element is clamped in the upper filter element tray 13 and the lower filter element tray 14 and is fixed, the purging branch pipe 15 is positioned on the central axis of the air filter element, the purging nozzle 16 is used for purging the air filter element, dust generated after purging is sucked away in the airtight cleaning box 1 through the dust discharge pipe 8 and enters the dust collector 9, the check valve 10 is arranged between the dust collector 9 and the dust discharge pipe 8, the pumped dust can be prevented from returning into the box body, the differential pressure gauge 20 is arranged between the dust discharge pipe 8 and the air pipe 11 at the outlet of the air storage tank 12, the pressure difference change of the filter element before and after purging can be judged according to the reading of the differential pressure gauge, the purging effect is further judged, the pulley 19 is arranged below the lower cover plate 3, the air filter element can slide on the supporting table 4, the supporting table 4 is lowered through the lifting mechanism 5 after purging is completed, the air filter element is separated from the upper filter element tray 13, the air filter element is pulled out through the pulley 19, the cleaning device is convenient and quick, and can clean a plurality of air filter elements at a time.
As shown in fig. 2, the lifting mechanism 5 can be arranged above the upper cover plate 2, a hose is arranged between the purging branch pipe 15 and the air pipe, the air filter element is fixed by pressing the upper cover plate 2, after purging is finished, the air filter element can be separated by lifting the upper cover plate 2, and then the air filter element is pulled away through a pulley.
The cleaning box 1 is a sealed box body, a sealing door 17 is arranged on one side of the sealed box body, sealing strips are arranged on the periphery of the inner side of the sealing door 17, sealing reliability is guaranteed, a hand wheel type locking device 18 is further arranged on the sealing door 17, after the sealing door 17 is closed, the door is locked through the locking device 18, dust is prevented from leaking out, and an observation window can be arranged on the sealing door 17 and used for observing the compression condition and the purging condition of an internal air filter element.
The invention can also change the differential pressure gauge 20 into a thermal control interlocking protection, connect an electric loop into a control loop, realize differential pressure purging, and automatically stop the differential pressure to reach a design value, thereby avoiding manual continuous duty and greatly freeing up labor force.
The heater can adopt electric heating, water heating or steam heating, can consider using the water or steam discharged by a power plant as a heating medium, fully recovers heat, saves energy and reduces consumption, and can be provided with a flushing water pipe beside the air storage tank 12, thereby being convenient for special situations.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (6)
1. An off-line back-flushing cleaning device for an air filter element of a gas compressor of a gas turbine is characterized in that: the cleaning device comprises a cleaning box (1), wherein an upper cover plate (2) is arranged above an inner cavity of the cleaning box (1), a lower cover plate (3) is arranged below the cleaning box, a plurality of filter element upper trays (13) are arranged on the upper cover plate (2), a plurality of filter element lower trays (14) are arranged on the lower cover plate (3), the filter element upper trays (13) and the filter element lower trays (14) are coaxially arranged, a purging branch pipe (15) is arranged between the filter element upper trays (13) and the filter element lower trays (14), a purging nozzle (16) is arranged on the purging branch pipe (15), a supporting table (4) is arranged below the lower cover plate (3), sliding rails (22) are arranged on the supporting table (4), and pulleys (19) are arranged between the lower cover plate (3) and the supporting table (4);
a dust discharge pipe (8) is arranged in the cleaning box (1), a dust collector (9) is arranged outside the cleaning box (1), and the dust discharge pipe (8) is connected with the dust collector (9);
the air inlet end of the purging branch pipe (15) is provided with an air storage tank (12), and the air storage tank (12) is connected with the purging branch pipe (15) through an air pipe (11);
the cleaning box (1) is a closed box body, a sealing door (17) is arranged on one side of the box body of the cleaning box (1), and a locking device (18) is arranged on the sealing door (17);
a differential pressure gauge (20) is arranged between the dust discharge pipe (8) and the air pipe (11);
the air pipe (11) between the outlet of the air storage tank (12) and the purging branch pipe (15) is provided with a pressure regulating valve, a pressure gauge, a quick-closing valve, a thermometer and a flowmeter in a matching way, the downstream pressure is regulated through the pressure regulating valve, the pressure stability is ensured, the automatic quick-closing valve is realized through remote operation of the quick-closing valve, the temperature of a purging air source is controlled through the thermometer, the purging flow is monitored through the flowmeter, and the purging ventilation effect is measured under the condition that the pressure of the front end is ensured to be constant;
the purging method for the air filter element of the gas compressor of the gas turbine comprises the following steps:
(1) Storing compressed air in an air storage tank (12);
(2) The air filter element is fixed on a filter element lower tray (14), the air filter element is sent into a cleaning box (1) through a sliding rail (22), and the air filter element is fixed between a filter element upper tray (13) and a filter element lower tray (14) through a lifting mechanism (5);
(3) Compressed air is sent into a purging branch pipe (15) by an air storage tank (12) through an air pipe (11), an air filter element is purged through a purging nozzle (16), and meanwhile, a dust collector (9) is started to collect dust;
(4) After purging, the air storage tank (12) and the dust collector (9) are closed, the cleaning box (1) is opened, the air filter element is released from being fixed between the upper filter element tray (13) and the lower filter element tray (14) through the lifting mechanism (5), and the air filter element is taken out through the sliding rail (22);
the compressed air stored in the air storage tank (12) can be hot air or normal-temperature air.
2. The off-line blowback cleaning device for an air filter element of a gas turbine compressor of claim 1, wherein: the purging nozzles (16) are arranged on the purging branch pipes (15) in a staggered mode in the circumferential direction of 360 degrees.
3. The off-line blowback cleaning device for an air filter element of a gas turbine compressor of claim 1, wherein: the dust discharge pipe (8) is provided with a check valve (10).
4. The off-line blowback cleaning device for an air filter element of a gas turbine compressor of claim 1, wherein: the air filter cleaning device also comprises a lifting mechanism (5), wherein the lifting mechanism (5) is arranged in the inner cavity of the cleaning box (1), the lifting mechanism (5) can be arranged above the upper cover plate (2) and connected with the upper cover plate (2), and also can be arranged below the supporting table (4) and connected with the supporting table (4), and the lifting mechanism (5) can be an electric lifting mechanism, a pneumatic lifting mechanism or a hydraulic lifting mechanism.
5. The off-line blowback cleaning device for an air filter element of a gas turbine compressor of claim 1, wherein: the inner wall of the cleaning box (1) is provided with a positioning mechanism (7).
6. The off-line blowback cleaning device for an air filter element of a gas turbine compressor of claim 1, wherein: an upper tray rubber pad is arranged below the upper filter element tray (13), and a lower tray rubber pad is arranged above the lower filter element tray (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195552.2A CN107715578B (en) | 2017-11-24 | 2017-11-24 | Off-line back-blowing cleaning device and method for air filter element of gas compressor of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195552.2A CN107715578B (en) | 2017-11-24 | 2017-11-24 | Off-line back-blowing cleaning device and method for air filter element of gas compressor of gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107715578A CN107715578A (en) | 2018-02-23 |
| CN107715578B true CN107715578B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711195552.2A Active CN107715578B (en) | 2017-11-24 | 2017-11-24 | Off-line back-blowing cleaning device and method for air filter element of gas compressor of gas turbine |
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| CN (1) | CN107715578B (en) |
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| CN114100252B (en) * | 2021-11-11 | 2024-08-20 | 石钢京诚装备技术有限公司 | Device for purging cylindrical paper air filter element |
| CN115508268A (en) * | 2022-10-21 | 2022-12-23 | 华电电力科学研究院有限公司 | Method and device for detecting resistance characteristic of clean filter material |
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