Self-cleaning type dust removal structure of gas inlet filter screen of gas turbine

Abstract

The utility model discloses a self-cleaning dust removal structure of an air inlet filter screen of a gas turbine, which comprises a three-way connecting pipeline and a mounting shaft, the upper end of the three-way connecting pipeline is connected with a gas turbine blast pipe, the side surface is connected with an air inlet pipeline, and the lower end is connected with a dust cleaning box; an air inlet filter element is arranged in the gas turbine air supply pipe; the mounting shaft is vertically, coaxially and rotationally arranged in the three-way connecting pipeline, the upper end of the mounting shaft extends into the gas turbine air supply pipe, the lower end of the mounting shaft rotationally abuts against the bottom end in the dust cleaning box, and a cleaning brush, a driving fan and a stirring wheel are sequentially mounted on the mounting shaft from top to bottom; the cleaning brush abuts against the lower end face of the air inlet filter element, the driving fan is located at a lower end opening of the gas turbine air supply pipe, and the stirring wheel is located in the dust cleaning box. The cleaning brush is driven by the mounting shaft to clean the air inlet filter element in time, and meanwhile, dust in the three-way connecting pipeline can enter the dust cleaning box along with part of airflow to be treated, so that floating dust in the three-way connecting pipeline is prevented from being gradually increased along with time accumulation.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas turbine intake filter technology field, concretely is a kind of self-cleaning type dust removal structure of gas turbine intake filter screen. BACKGROUND

[0002] In the operation process of gas turbine, dust, grit and other impurities in air can enter gas turbine with intake air.If not removed in time, these impurities will adhere to the surface of filter screen, causing filter screen to be blocked, increasing intake air resistance, reducing gas turbine intake efficiency, affecting the power output and thermal efficiency of gas turbine;At the same time, impurities entering the interior of gas turbine can aggravate the wear of blade and other components, shorten the service life of gas turbine, and increase maintenance cost and shutdown risk.Therefore, gas turbine intake filter screen needs to be equipped with self-cleaning type dust removal structure to ensure stable and efficient operation of gas turbine.

[0003] In the prior art, the utility model discloses a kind of for gas turbine intake dust removal device in patent No.CN202121349654.7, including shell, air inlet is arranged in front of shell, air outlet is arranged in rear of shell, filter screen fixing frame is arranged in filter duct, filter screen is arranged in filter screen fixing frame, ash bucket is opened in the bottom of filter duct before filter screen, reverse blowing mechanism is arranged in filter duct after filter screen, reverse blowing mechanism includes lug, hydraulic machine, pull rod, sealing head, neck funnel and compressed air pipe, lug is arranged on the inner wall of filter duct, hydraulic machine is arranged on lug, pull rod is arranged at the output end of hydraulic machine, pull rod is connected to the other end and is arranged sealing head, neck funnel is arranged in the tail end of filter duct Port, sealing head is arranged in neck funnel, compressed air pipe is arranged on the inner wall of filter duct close to filter screen;This kind of for gas turbine intake dust removal device uses reverse blowing to efficiently remove dust, and does not need to sacrifice intake time and flow.

[0004] The above-mentioned patent provides a dust removal device for cleaning filter screen by alternately changing the flow direction of air flow in two filter ducts;However, when the dust on the filter screen is cleaned, the dust cannot be discharged, causing the dust to float back and forth in the two filter ducts, and gradually increasing with time, which is not conducive to the long-term stable operation of gas turbine intake equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a self-cleaning type dust removal structure of gas turbine intake filter screen, to improve the problem that the dust on the filter screen cannot be discharged when the existing gas turbine intake equipment cleans the dust, causing the dust to float back and forth in the two filter ducts, and gradually increasing with time, which is not conducive to the long-term stable operation of gas turbine intake equipment.

[0006] The utility model discloses a kind of self-cleaning dust removal structures of gas turbine intake filter screen, including three-way connecting pipeline, further including mounting shaft;The upper end of three-way connecting pipeline is connected with gas turbine air supply pipe, side is connected with air inlet pipeline, lower end is connected with dust removal tank;Gas turbine air supply pipe is provided with intake filter element inside;Mounting shaft is vertically coaxially rotationally arranged in three-way connecting pipeline, and upper end extends into gas turbine air supply pipe, and lower end rotationally abuts at the inner bottom end of dust removal tank, cleaning brush, driving fan and agitator wheel are sequentially mounted on the mounting shaft from top to bottom;Cleaning brush is arranged at the lower end surface of intake filter element, and driving fan is located at the lower end port position of gas turbine air supply pipe, and agitator wheel is located in dust removal tank.

[0007] Preferably, further including connecting flange;The upper end of three-way connecting pipeline is provided with air outlet, and the lower end is provided with dust fall pipe, and the side is provided with air inlet, and the connecting place of air inlet and three-way connecting pipeline is obliquely arranged towards air outlet;The lower end port of gas turbine air supply pipe is connected with air outlet through connecting flange;Air inlet pipeline is connected with air inlet through connecting flange.

[0008] Preferably, the dust removal tank includes tank cover, and the upper end of the dust removal tank is detachably provided with tank cover;The upper end of tank cover is provided with pipeline mounting port communicating with the inside of dust removal tank, and dust fall pipe connects pipeline mounting port.

[0009] Preferably, the tank cover includes mounting bolt;A plurality of mounting bolts are sequentially arranged on the tank cover along the circumferential direction thereof, and the tank cover is detachably mounted on the dust removal tank through the mounting bolts.

[0010] Preferably, the gas turbine air supply pipe includes limiting installation table and inner locking ring, and the upper end surface of intake filter element is arranged at the lower end surface of limiting installation table;The inner locking ring is threadedly installed in the inside of lower end port of gas turbine air supply pipe, and the upper end is abutted at the lower end surface of intake filter element.

[0011] Preferably, additionally including mounting bracket, the mounting bracket is cross structure, and the four ends of the mounting bracket are detachably mounted on the inner wall of inner locking ring;The shaft body part of mounting shaft between cleaning brush and driving fan is rotationally mounted on mounting bracket;The inside bottom end of dust removal tank is provided with rotating seat corresponding to the position of lower end head of mounting shaft, and the lower end of mounting shaft is rotationally mounted in rotating seat.

[0012] Preferably, the inner wall of inner locking ring is provided with one-to-one corresponding mounting groove corresponding to the position of each end part of mounting bracket, and the four ends of mounting bracket are detachably mounted in mounting groove.

[0013] Compared with prior art, the utility model has the beneficial effects that:

[0014] 1. The utility model discloses a three -way connecting pipeline is provided with the installation shaft that rotates through the airflow drive, and through the installation shaft drive cleaning brush can clean the air inlet filter element in time, and the dust in three -way connecting pipeline can follow a part of airflow and enter the dust removal tank and handle, prevent its again float to three -way connecting pipeline, thereby avoid the dust that three -way connecting pipeline inside floats gradually increases with the time accumulation.

[0015] 2. The utility model discloses a stirring wheel is arranged in the dust removal tank, can drive the liquid in the dust removal tank through the stirring wheel and stirs, avoids the ability of liquid surface adsorbing dust to reduce. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the sectional view structure schematic drawing of the utility model discloses;

[0017] Figure 2 It is the three -dimensional structure schematic drawing of the utility model discloses;

[0018] Figure 3 It is the structure schematic drawing of three -way connecting pipeline of the utility model discloses;

[0019] Figure 4 It is the assembly structure schematic drawing on the installation shaft of the utility model discloses;

[0020] Figure 5 It is the structure schematic drawing of gas turbine air supply pipe of the utility model discloses;

[0021] Figure 6 It is the structure schematic drawing of tank cover of the utility model discloses.

[0022] In the drawing: 1, three -way connecting pipeline;101, air outlet pipe mouth;102, dust fall pipe mouth;103, air inlet pipe mouth;2, gas turbine air supply pipe;201, spacing installation platform;202, inner lock ring;203, installation groove;3, air inlet pipeline;4, dust removal tank;401, rotating seat;402, tank cover;403, mounting bolt;404, pipeline installation mouth;5, air inlet filter element;6, installation shaft;7, cleaning brush;8, drive fan;9, stirring wheel;10, mounting frame;11, connecting flange. DETAILED DESCRIPTION

[0023] In the utility model, unless another explicit stipulation and limitation, the term "installation", "link", "connection", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through the indirect connection of intermediate medium, can be the intercommunication of two elements or the interaction of two elements. For ordinary skilled in the art, the above-mentioned term can understand the concrete meaning in the utility model according to specific circumstances.

[0024] Further description will be made in combination with the drawings and specific embodiments: Embodiment 1

[0025] As shown in Figure 1 , Figure 3 and Figure 6 , a self-cleaning dust removal structure of a gas turbine air inlet filter screen includes a three-way connecting pipeline 1 and a mounting shaft 6. The upper end of the three-way connecting pipeline 1 is connected with a gas turbine air supply pipe 2, the side surface is connected with an air inlet pipeline 3, and the lower end is connected with a dust removal tank 4. The dust removal tank 4 stores water inside, which can be used to adsorb dust that contacts the water surface. The structure further includes a connecting flange 11. The upper end of the three-way connecting pipeline 1 is provided with an air outlet port 101, the lower end is provided with a dust fall port 102, and the side surface is provided with an air inlet port 103. The connecting part of the air inlet port 103 and the three-way connecting pipeline 1 is obliquely arranged towards the air outlet port 101. The lower end of the gas turbine air supply pipe 2 is connected with the air outlet port 101 through the connecting flange 11. The air inlet pipeline 3 is connected with the air inlet port 103 through the connecting flange 11. The dust removal tank 4 includes a tank cover 402. The upper end of the dust removal tank 4 is detachably provided with the tank cover 402. The upper end of the tank cover 402 is provided with a pipeline mounting port 404 that communicates with the inside of the dust removal tank 4. The dust fall port 102 is connected with the pipeline mounting port 404. The tank cover 402 includes mounting bolts 403. A plurality of mounting bolts 403 are sequentially arranged along the circumferential direction of the tank cover 402. The tank cover 402 is detachably mounted on the dust removal tank 4 through the mounting bolts 403. The connecting part of the connecting flange 11 and the connecting part of the dust fall port 102 and the dust removal tank 4 are both provided with sealing rings. When the airflow in the air inlet pipeline 3 carries dust into the three-way connecting pipeline 1, due to the three-way structure of the three-way connecting pipeline 1, part of the airflow will flow downward to the dust removal tank 4, thereby driving part of the dust to enter the dust removal tank 4. When the dust meets the liquid inside the dust removal tank 4, it will be adsorbed in the liquid, thereby reducing the dust floating in the air. At the same time, when the dust accumulates too much or forms a block, it will enter the dust removal tank 4 through its own gravity, thereby achieving the purpose of controlling the dust seal inside the three-way connecting pipeline 1.

[0026] As shown in Figure 1 , Figure 4 and Figure 5As shown in the drawings, the air supply pipe 2 of the combustion engine is internally provided with an air inlet filter 5; the mounting shaft 6 is vertically and coaxially arranged in the three-way connecting pipe 1, the upper end of which extends into the air supply pipe 2 of the combustion engine, and the lower end of which is rotatably abutted against the inner bottom end of the dust cleaning box 4; the cleaning brush 7, the driving fan 8 and the stirring wheel 9 are sequentially arranged on the mounting shaft 6 from top to bottom; the cleaning brush 7 is abutted against the lower end face of the air inlet filter 5, the driving fan 8 is located at the lower end of the air supply pipe 2 of the combustion engine, and the stirring wheel 9 is located in the dust cleaning box 4. The driving fan 8 is driven to rotate by air flow, thereby driving the mounting shaft 6 to rotate, so that the cleaning brush 7 and the stirring wheel 9 mounted on the mounting shaft 6 can also rotate. The cleaning brush 7, the driving fan 8 and the stirring wheel 9 are connected with the mounting shaft 6 by bolts.

[0027] As shown in the drawings, Figure 1 , Figure 2 , Figure 4 and Figure 5 , the air supply pipe 2 of the combustion engine comprises a limiting mounting table 201 and an inner locking ring 202, and the upper end face of the air inlet filter 5 is abutted against the lower end face of the limiting mounting table 201; the inner locking ring 202 is threadedly mounted in the lower end of the air supply pipe 2 of the combustion engine, and the upper end thereof is abutted against the lower end face of the air inlet filter 5. The air inlet filter 5 is abutted and mounted on the limiting mounting table 201 through the inner locking ring 202, so that the air inlet filter 5 can be conveniently dismounted and mounted. In addition, the mounting frame 10 is also included, which is a cross structure, and the four ends of the mounting frame 10 are detachably mounted on the inner wall of the inner locking ring 202; the mounting shaft 6 is rotatably mounted on the mounting frame 10 at the shaft body part between the cleaning brush 7 and the driving fan 8; the inner bottom end of the dust cleaning box 4 is provided with a rotating seat 401 corresponding to the position of the lower end of the mounting shaft 6, and the lower end of the mounting shaft 6 is rotatably mounted in the rotating seat 401. The inner wall of the inner locking ring 202 is provided with a corresponding mounting groove 203 corresponding to the position of each end of the mounting frame 10, and the four ends of the mounting frame 10 are detachably mounted in the mounting groove 203. The mounting frame 10 is mounted in the inner locking ring 202 by bolts for supporting the mounting shaft 6. Embodiment 2

[0028] As shown in the drawings, Figure 1 , Figure 3 and Figure 6As shown, a self-cleaning dust removal structure for a gas turbine intake filter includes a three-way connecting pipe 1 and a mounting shaft 6. The upper end of the three-way connecting pipe 1 is connected to a gas turbine air supply pipe 2, the side is connected to an air inlet pipe 3, and the lower end is connected to a dust collection box 4. It also includes a connecting flange 11. The upper end of the three-way connecting pipe 1 has an air outlet 101, the lower end has a dust settling pipe 102, and the side has an air inlet 103. The connection between the air inlet 103 and the three-way connecting pipe 1 is inclined towards the air outlet 101. The lower end of the gas turbine air supply pipe 2 is connected to the air outlet 101 via the connecting flange 11. The air inlet pipe 3 is connected to the air inlet 103 via the connecting flange 11. The dust collection box 4 includes a box cover 402, which is detachably mounted on the upper end of the dust collection box 4. The upper end of the box cover 402 has a pipe installation port 404 connecting to the interior of the dust collection box 4, and the dust settling pipe 102 is connected to the pipe installation port 404. The cover 402 includes mounting bolts 403; multiple mounting bolts 403 are arranged sequentially along its circumference on the cover 402, and the cover 402 can be detachably installed on the dust collection box 4 by means of the mounting bolts 403.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, an air intake filter element 5 is installed inside the gas turbine air supply pipe 2; the mounting shaft 6 is vertically and coaxially rotatably installed in the three-way connecting pipe 1, with its upper end extending into the gas turbine air supply pipe 2 and its lower end rotatably abutting against the bottom of the dust collection box 4. A cleaning brush 7, a drive fan 8, and an agitator wheel 9 are installed on the mounting shaft 6 from top to bottom; the cleaning brush 7 abuts against the lower end face of the air intake filter element 5, the drive fan 8 is located at the lower port of the gas turbine air supply pipe 2, and the agitator wheel 9 is located in the dust collection box 4.

[0030] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the gas turbine air supply duct 2 includes a limiting mounting platform 201 and an inner locking ring 202. The upper end face of the intake filter element 5 abuts against the lower end face of the limiting mounting platform 201. The inner locking ring 202 is threadedly installed inside the lower port of the gas turbine air supply duct 2, and its upper end abuts against the lower end face of the intake filter element 5. It also includes a mounting bracket 10, which has a cross-shaped structure. The four ends of the mounting bracket 10 are detachably mounted on the inner wall of the inner locking ring 202. The mounting shaft 6 is rotatably mounted on the mounting bracket 10 at the shaft portion located between the cleaning brush 7 and the drive fan 8. A rotating seat 401 is provided at the bottom of the dust collection box 4 corresponding to the lower end of the mounting shaft 6, and the lower end of the mounting shaft 6 is rotatably mounted in the rotating seat 401. The inner wall of the inner locking ring 202 has corresponding mounting grooves 203 at the positions of each end of the mounting bracket 10, and the four ends of the mounting bracket 10 are detachably mounted in the mounting grooves 203.

[0031] The utility model discloses a working principle: in use, the fan of external equipment drives air to enter through air inlet pipeline 3, and flow to gas turbine air supply pipe 2, and airflow will drive driving fan 8 to rotate in the flow process, and driving fan 8 drives installation shaft 6 to rotate, thereby drive cleaning brush 7 and agitating wheel 9 to rotate, and cleaning brush 7 rotates and cleans the lower end surface of air inlet filter element 5, makes dust separate from air inlet filter element 5, cannot adhere on air inlet filter element 5;The dust that floats in three -way connecting pipeline 1 will be gradually adsorbed by the liquid inside dust removal tank 4, and through installation shaft 6 drive agitating wheel 9 agitates liquid surface, can avoid the effect reduction of dust adsorbing liquid caused by the dust gathering on the surface of liquid;So can avoid the dust that gathers too many floating in three -way connecting pipeline 1, lead to the effect reduction of cleaning air inlet filter element 5, can also continuously keep the absorption state of the dust that floats in three -way connecting pipeline 1.

[0032] In conclusion, the utility model discloses a through the airflow drive rotating installation shaft 6 that is arranged in three -way connecting pipeline 1, and through installation shaft 6 drive cleaning brush 7 can clean air inlet filter element 5 in time, and the dust in three -way connecting pipeline 1 can follow a part of airflow and enter dust removal tank 4 and handle, prevent it from floating again to three -way connecting pipeline 1, to avoid the accumulation of the dust that floats in three -way connecting pipeline 1 gradually increases along with time;Through setting up agitating wheel 9 in dust removal tank 4, can drive the liquid inside dust removal tank 4 to agitate through agitating wheel 9, avoid the ability reduction of liquid surface adsorbing dust.

[0033] The above is only the preferred implementation way of the utility model, and does not limit the utility model, and for the skilled person in the art, the utility model can have various changes and changes, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A self-cleaning dust removal structure for a gas turbine intake filter, comprising a three-way connecting pipe (1), characterized in that, It also includes an installation shaft (6); the upper end of the three-way connecting pipe (1) is connected to the gas turbine air supply pipe (2), the side is connected to the air inlet pipe (3), and the lower end is connected to the dust cleaning box (4); the gas turbine air supply pipe (2) is provided with an air inlet filter (5); the installation shaft (6) is vertically and coaxially rotatably installed in the three-way connecting pipe (1), the upper end extends into the gas turbine air supply pipe (2), and the lower end rotatably abuts against the bottom of the dust cleaning box (4). The installation shaft (6) is installed from top to bottom with a cleaning brush (7), a drive fan (8), and an agitator (9); the cleaning brush (7) abuts against the lower end face of the air inlet filter (5), the drive fan (8) is located at the lower port of the gas turbine air supply pipe (2), and the agitator (9) is located in the dust cleaning box (4).

2. The self-cleaning dust removal structure of the gas turbine intake filter according to claim 1, characterized in that, It also includes a connecting flange (11); the upper end of the three-way connecting pipe (1) is provided with an air outlet (101), the lower end is provided with a dust suppression pipe (102), and the side is provided with an air inlet (103). The connection between the air inlet (103) and the three-way connecting pipe (1) is inclined toward the air outlet (101); the lower end of the gas turbine air supply pipe (2) is connected to the air outlet (101) through the connecting flange (11); the air inlet pipe (3) is connected to the air inlet (103) through the connecting flange (11).

3. The self-cleaning dust removal structure of the gas turbine intake filter according to claim 2, characterized in that, The dust collection box (4) includes a box cover (402), and the upper end of the dust collection box (4) is detachably provided with a box cover (402); the upper end of the box cover (402) is provided with a pipe installation port (404) that connects to the inside of the dust collection box (4), and the dust removal pipe port (102) is connected to the pipe installation port (404).

4. The self-cleaning dust removal structure of the gas turbine intake filter according to claim 3, characterized in that, The cover (402) includes mounting bolts (403); multiple mounting bolts (403) are arranged sequentially along its circumference on the cover (402), and the cover (402) can be detachably installed on the dust cleaning box (4) by means of the mounting bolts (403).

5. The self-cleaning dust removal structure of the gas turbine intake filter according to claim 1, characterized in that, The gas turbine air supply pipe (2) includes a limiting mounting platform (201) and an inner locking ring (202). The upper end face of the air intake filter (5) is abutted against the lower end face of the limiting mounting platform (201). The inner locking ring (202) is threadedly installed inside the lower port of the gas turbine air supply pipe (2), and its upper end abuts against the lower end face of the air intake filter (5).

6. The self-cleaning dust removal structure of the gas turbine intake filter according to claim 5, characterized in that, In addition, it also includes a mounting bracket (10), which has a cross structure. The four ends of the mounting bracket (10) are detachably mounted on the inner wall of the inner locking ring (202). The mounting shaft (6) is rotatably mounted on the mounting bracket (10) at the shaft part between the cleaning brush (7) and the drive fan (8). A rotating seat (401) is provided at the bottom of the dust box (4) corresponding to the lower end of the mounting shaft (6). The lower end of the mounting shaft (6) is rotatably mounted in the rotating seat (401).

7. The self-cleaning dust removal structure of the gas turbine intake filter according to claim 6, characterized in that, The inner wall of the inner locking ring (202) is provided with a corresponding mounting groove (203) at each end of the mounting bracket (10), and the four ends of the mounting bracket (10) are detachably installed in the mounting groove (203).

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