Ash removal device for gas inlet filter of gas turbine

Abstract

The utility model relates to the technical field of gas turbines, and discloses a gas turbine air inlet filter ash removal device which comprises an air inlet pipeline, one side of the air inlet pipeline is connected with a gas turbine, the other side of the air inlet pipeline is provided with an air inlet filter chamber, and a filter assembly is arranged in the air inlet filter chamber. A self-cleaning filter is arranged on one side of the filter assembly, a plurality of filter cartridges are arranged on one side of the self-cleaning filter, and an ash removal assembly is arranged on one side of the filter cartridges and is a pulse type compressed air back-blowing nozzle; according to the self-cleaning type filter, dust on the filter cartridges and the self-cleaning type filter can be cleaned through the pulse type compressed air back-blowing spray head, so that the service life of a filter element is prolonged, and the service life of the self-cleaning type filter is prolonged. The problem that in the prior art, efficient and stable operation of a unit is affected, and therefore the service life of a filter element is shortened is solved.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine technology, and in particular to a gas turbine inlet filter cleaning device. Background Technology

[0002] Gas turbines have extremely high requirements for air cleanliness, and their inlet air filtration systems are typically equipped with two or three stages of filtration. The cleanliness of the inlet air directly affects the performance and lifespan of the gas turbine, and consequently, its operational economy. For horizontally mounted gas turbine inlet air filtration devices, excessive dust accumulation on the filter cartridges can, at best, increase the pressure differential in the inlet system, reducing the amount of air for combustion in the gas turbine and affecting its efficiency. At worst, it can cause the self-cleaning filter cartridge to become clogged, leading to alarms and turbine shutdown, severely impacting unit output, operational stability, and economic efficiency. Therefore, equipping gas turbines with high-grade self-cleaning filters and a comprehensive fault detection system is of paramount importance.

[0003] In existing technologies, if too much dust adheres to the filter cartridge, it will affect the efficient and stable operation of the unit, thereby reducing the service life of the filter element. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a gas turbine intake filter cleaning device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gas turbine inlet filter cleaning device includes an inlet pipe, one side of which is connected to a gas turbine, and the other side of which is an inlet filter chamber, wherein a filter assembly is provided.

[0007] A self-cleaning filter is provided on one side of the filter assembly, and several filter cartridges are provided on one side of the self-cleaning filter. A dust removal component is provided on one side of the filter cartridges. The dust removal component is a pulse-type compressed air back-blowing nozzle. The filter outlets of the filter cartridges are connected to the air outlet of the pulse-type compressed air back-blowing nozzle. A dust removal device is provided at the bottom of the self-cleaning filter.

[0008] Preferably, the filtration assembly includes a silencer, a plate-type coarse filter element, a water droplet separator, and a rain cover arranged sequentially from right to left, and the self-cleaning filter is disposed between the silencer and the plate-type coarse filter element.

[0009] Preferably, the dust removal device comprises a dust cleaning fan, the dust cleaning fan is arranged at the bottom of the self-cleaning filter, and the output end of the dust cleaning fan is connected with the outside of the air inlet filtering chamber.

[0010] Preferably, one side of the self-cleaning filter is provided with a differential pressure sensor.

[0011] Preferably, the self-cleaning filter comprises a filter core and a metal support, the filter core is arranged at one side of the plate type rough filter core, and the metal support is arranged at the other side of the filter core.

[0012] Preferably, the sound elimination device is made of metal wire.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a filter assembly can filter air before entering the air inlet pipeline, the self-cleaning filter can filter dust particles, if the dust on the self-cleaning filter is too much, will influence the operation effect of gas turbine, through the setting of pulse type compressed air backflushing spray head, can make air pass through filter cartridge, blow off the dust on filter cartridge and self-cleaning filter, then through dust removal device, blow off the dust and export air inlet filtering chamber, compared with the prior art, the device sets up pulse type compressed air backflushing spray head, can clean the dust on filter cartridge and self-cleaning filter, to increase the service life of filter core, solve the problem of reducing the service life of filter core in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a plane schematic view of the utility model discloses a kind of gas turbine air inlet filter dust cleaning device.

[0016] In the drawing: 1, rain cover;2, water droplet separator;3, plate type rough filter core;4, inspection platform;5, dust cleaning fan;6, filter cartridge;7, sound elimination device;8, air inlet pipeline;9, gas turbine;10, pulse type compressed air backflushing spray head;11, differential pressure sensor;12, air inlet filtering chamber;13, self-cleaning filter. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings of the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0018] Refer to Figure 1The utility model relates to a kind of gas turbine intake filter dust cleaning device, including intake pipeline 8, one side of the intake pipeline 8 is connected with gas turbine 9, the other side of the intake pipeline 8 is provided with intake filter chamber 12, filter assembly is provided in the intake filter chamber 12;

[0019] One side of the filter assembly is provided with self-cleaning filter 13, one side of the self-cleaning filter 13 is provided with a plurality of filter cartridges 6, a plurality of filter cartridges 6 are provided with dust cleaning assembly on one side, the dust cleaning assembly is pulse compressed air backflushing nozzle 10, the filter outlet of a plurality of filter cartridges 6 is communicated with the air outlet of pulse compressed air backflushing nozzle 10, and dust removal device is arranged at the bottom end of a plurality of self-cleaning filters 13.

[0020] When the device is used, air can be filtered before entering the intake pipeline 8, dust particles can be filtered by the self-cleaning filter 13, and the operation effect of the gas turbine 9 can be affected when too much dust accumulates on the self-cleaning filter 13, the dust on the filter cartridge 6 and the self-cleaning filter 13 can be blown off by the pulse compressed air backflushing nozzle 10, and the blown-off dust can be discharged from the intake filter chamber 12 by the dust removal device, compared with the prior art, the dust on the filter cartridge 6 and the self-cleaning filter 13 can be cleaned by the pulse compressed air backflushing nozzle 10, so as to increase the service life of the filter element, and the problem of reducing the service life of the filter element caused by affecting the high-efficiency and stable operation of the unit in the prior art is solved.

[0021] The composition of the above-mentioned pulse compressed air backflushing nozzle 10 includes:

[0022] Air compressor: a device that generates compressed air, which can be piston type, screw type, scroll type or centrifugal type, etc.

[0023] Air tank: used for storing compressed air, stabilizing system pressure, and providing sufficient capacity of compressed air for use.

[0024] Drier: removes moisture in compressed air to prevent equipment damage due to moisture.

[0025] Filter: removes oil, dust and other impurities in compressed air to ensure air quality.

[0026] Pressure regulating valve: adjusts the pressure of compressed air to meet the needs of different equipment.

[0027] Pulse control instrument: controls the pulse frequency, duration and interval of the pulse compressed air system.

[0028] Electromagnetic pulse valve: quickly opens and closes according to the signal of pulse control instrument to release compressed air to generate pulse.

[0029] Working principle: The air compressor compresses air to a certain pressure and delivers it to the air tank. The compressed air is stored in the air tank and then dried and purified by a dryer and filter. The pressure regulating valve adjusts the pressure of the compressed air to a level suitable for the system's operation. The pulse controller sends an electrical signal according to a preset program to control the action of the electromagnetic pulse valve. When the electromagnetic pulse valve opens, the compressed air stored in the air tank is rapidly released, forming a high-pressure pulse. This high-pressure pulse can be used for dust removal, material conveying, or other applications requiring instantaneous high-pressure airflow. The pulse controller will periodically repeat the above process to generate continuous pulse airflow.

[0030] Both the self-cleaning filter 13 and the pulse-type compressed air backflush nozzle 10 are equipped with an inspection platform 4 on one side. The inspection platform 4 includes a mobile camera and an anemometer. Through the mobile camera and anemometer, high-definition images of the surface of the filter cartridge 6 can be captured in real time and the wind speed before and after the filter can be measured. By adopting graphic classification technology, the automatic classification and automatic identification of filter cartridge defects can be realized. By comparing the wind speed before and after the filter, the degree of dust accumulation on the filter element can be determined, and it can be decided whether it needs to be replaced.

[0031] Furthermore, the filtration assembly includes, from right to left, a silencer 7, a plate-type coarse filter element 3, a water droplet separator 2, and a rain cover 1. The self-cleaning filter 13 is positioned between the silencer 7 and the plate-type coarse filter element 3. The rain cover 1 protects objects from rainwater. The water droplet separator 2 separates small water droplets suspended in the gas. The plate-type coarse filter element 3 captures and removes larger particulate impurities in the air, such as sand, metal shavings, fibers, and sediments, to protect downstream equipment from damage caused by these particles. The silencer 7 effectively reduces noise generated by machines, equipment, or vehicles during operation, protecting the environment and people's quality of life.

[0032] Furthermore, the dust removal device includes a dust removal fan 5, which is installed at the bottom of the self-cleaning filter 13, and the output end of the dust removal fan 5 is connected to the outside of the air intake filter chamber 12. Through the dust removal fan 5, the dust blown off the self-cleaning filter 13 can be blown to the outside of the air intake filter chamber 12 by forming a negative pressure.

[0033] Furthermore, a differential pressure sensor 11 is provided on one side of the self-cleaning filter 13. The differential pressure sensor 11 can detect the pressure value generated by the self-cleaning filter 13 on the differential pressure sensor 11. If the pressure value is too high, it means that there is too much dust on the self-cleaning filter 13 and it needs to be cleaned. At this time, the pulse compressed air backflush nozzle 10 can be activated to clean the self-cleaning filter 13.

[0034] Furthermore, the self-cleaning filter 13 includes a filter element and a metal support. The filter element is disposed on one side of the plate-type coarse filter element 3, and the metal support is disposed on the other side of the filter element. The filter element is an E12 grade filter element, and the metal support is corrosion resistant. With the filter element and metal support, particles with a diameter greater than 0.5 micrometers can be effectively filtered out, with a filtration efficiency of up to 80-90%. It also has a certain filtration effect on smaller particles.

[0035] Furthermore, the silencing device 7 is made of metal wire. By making the silencing device 7 of metal wire, the problem of high-speed airflow easily causing the wire to fall off and generate secondary pollution when passing through the silencing material can be solved.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gas turbine inlet filter cleaning device, comprising an inlet pipe (8), characterized in that: One side of the intake pipe (8) is connected to a gas turbine (9), and the other side of the intake pipe (8) is provided with an intake filter chamber (12), and a filter assembly is provided in the intake filter chamber (12). A self-cleaning filter (13) is provided on one side of the filter assembly. Several filter cylinders (6) are provided on one side of the self-cleaning filter (13). A dust removal assembly is provided on one side of each of the filter cylinders (6). The dust removal assembly is a pulse-type compressed air back-blowing nozzle (10). The filter outlets of the filter cylinders (6) are connected to the air outlet of the pulse-type compressed air back-blowing nozzle (10). A dust removal device is provided at the bottom of each of the self-cleaning filters (13).

2. The gas turbine inlet filter cleaning device according to claim 1, characterized in that: The filter assembly includes a silencer (7), a plate coarse filter element (3), a water droplet separator (2), and a rain cover (1) arranged from right to left. The self-cleaning filter (13) is arranged between the silencer (7) and the plate coarse filter element (3).

3. The gas turbine inlet filter cleaning device according to claim 1, characterized in that: The dust removal device includes a dust removal fan (5), which is located at the bottom of the self-cleaning filter (13), and the output end of the dust removal fan (5) is connected to the outside of the air intake filter chamber (12).

4. The gas turbine inlet filter cleaning device according to claim 1, characterized in that: A differential pressure sensor (11) is provided on one side of the self-cleaning filter (13).

5. A gas turbine inlet filter cleaning device according to claim 2, characterized in that: The self-cleaning filter (13) includes a filter element and a metal support. The filter element is disposed on one side of the plate coarse filter element (3), and the metal support is disposed on the other side of the filter element.

6. A gas turbine inlet filter cleaning device according to claim 2, characterized in that: The silencing device (7) is made of metal wire.

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