Air inlet device for gas turbine test bed

Abstract

The invention discloses a gas inlet device for a gas turbine test bed, which comprises a gas treatment box, a fixed bracket welded at the lower end of the gas treatment box, a gas turbine gas inlet pipe arranged at the right end of the gas treatment box, a gas inlet groove formed in the left end of the gas treatment box, and a butt joint mechanism, the butt joint mechanism is arranged at the right end of the gas treatment box, the connecting plate and the gas turbine gas inlet pipe are pressed and limited through a fixing pressing strip, and the gas treatment net is installed at the right end of the gas treatment box in an inserted mode. According to the gas inlet device for the gas turbine test bed, gas turbine gas inlet pipes of different sizes can be in butt joint, gas can be subjected to dust removal and purification treatment through the gas treatment net, meanwhile, in the dust removal process, dust attached to the gas treatment net can be swept through the cleaning brush, smoothness of the whole filtration and purification process is guaranteed, and the service life of the gas turbine test bed is prolonged. And the gas treatment net can be conveniently detached, cleaned and replaced.

Description

Technical Field

[0001] The invention relates to the technical field related to a gas engine test bench, and in particular to an air intake device for a gas engine test bench. Background Art

[0002] The gas turbine test bench is a device used to test the performance of gas turbines. The test bench can be used to test the traction thermal performance of gas turbines indoors. The test use of the gas turbine test bench not only promotes the research and application of high-end equipment technology, but also promotes the development of the energy industry. During the test and debugging process, the intake and exhaust systems of the gas turbine need to be tested, so the intake device is needed;

[0003] For example, announcement number CN114810352A discloses an air intake device for a gas turbine test bench, which relates to the technical field of gas turbines and includes a gas filtering mechanism and a pipe splicing mechanism. The pipe splicing mechanism is fixedly installed on the lower surface of the gas filtering mechanism, and a support is fixedly installed between the gas filtering mechanism and the pipe splicing mechanism. The air intake device for the gas turbine test bench uses a driving motor to drive the pipe connecting structure to rotate through a fixed sleeve, so that the four pipe connecting structures can be respectively connected to the air intake pipes of gas turbines of different sizes, thereby avoiding the problem of purchasing multiple air intake devices when debugging the gas turbine. The air intake device and the gas turbine are not only simple to operate, easy to maintain, space-saving, high in work efficiency, long in service life, but also convenient for workers to install;

[0004] For example, announcement number CN204064667U discloses an air intake device for a combustion engine test bench, comprising a horizontally arranged support frame, a replaceable adjustment support is arranged at the upper end of the support frame, the upper end of the adjustment support is connected to the filter house, air inlets are arranged on both sides of the filter house, rain shields are arranged side by side at the air inlet along the height direction and the length direction of the filter house, the inlet of the rain shield is vertically downward, an air outlet is arranged at the upper end of the adjustment support in the middle of the bottom of the filter house, and a conversion joint connected to the air outlet is arranged at the lower end of the air outlet; the utility model is not only simple to operate and maintain, but also can realize that one air intake device replaces more than two single air intake devices, saves space, reduces costs, and has low noise, good air intake effect, high working efficiency and long service life;

[0005] However, the existing air intake device for the gas turbine test bench still has the following shortcomings:

[0006] 1. The existing air intake device for the gas turbine test bench needs to use a motor to drive the switching of different matching pipes for docking when assembling and connecting the air intake pipes of different gas turbines with the device. The operation is cumbersome and it is not convenient to quickly and conveniently connect and disassemble the two.

[0007] 2. In the existing air intake device for the gas turbine test bench, during the purification process of the intake air, the filter screen is prone to clogging during long-term use, affecting the actual filtering process, and it is inconvenient to clean the filter screen and the dust;

[0008] 3. In the existing air intake device for the gas turbine test bench, the filter is installed inside the device, which is inconvenient to disassemble, replace and clean the filter.

[0009] Therefore, we propose an air intake device for a gas turbine test bench to solve the above-mentioned problems. Summary of the invention

[0010] The object of the present invention is to provide an air intake device for a gas turbine test bench to solve the problem proposed in the above background technology that when assembling and connecting the air intake pipes of different gas turbines with the device, it is necessary to use a motor to drive the switching of different matching pipes for docking, which is cumbersome to operate and inconvenient to quickly and conveniently connect and disassemble the two. During the purification process of the intake air, the filter screen is prone to blockage during long-term use, affecting the actual filtering process, and it is inconvenient to clean the filter screen and the dust. The filter screen is installed inside the device, which is inconvenient to disassemble, replace and clean the filter screen.

[0011] To achieve the above-mentioned object, the present invention provides the following technical solutions: an air intake device for a gas turbine test bench, comprising a gas treatment box, a fixing bracket welded to the lower end of the gas treatment box, a gas turbine air intake pipe arranged at the right end of the gas treatment box, and an air intake slot opened at the left end of the gas treatment box;

[0012] Also includes:

[0013] A docking mechanism, the docking mechanism is arranged at the right end of the gas processing box, and the docking mechanism is used to connect the gas turbine intake pipe and the gas processing box, the docking mechanism includes a connecting pipe fixed at the opening of the right end of the gas processing box, a hollow disc-shaped connecting plate fixedly connected to the right end of the connecting pipe, a gas nozzle fixedly connected to the right end of the connecting plate, and a sealing gasket fitted between the connecting plate and the gas turbine intake pipe;

[0014] The connection plate and the gas turbine inlet pipe are compressed and limited by a fixed pressure strip, and the fixed pressure strip is arranged at an equal angle at the connection between the connection plate and the gas turbine inlet pipe, the diameter of the gas nozzle is smaller than the diameter of the gas turbine inlet pipe, and the diameter of the connection plate is larger than the diameter of the gas turbine inlet pipe;

[0015] The gas processing net is plugged and installed at the right end of the gas processing box, and the gas processing net is divided into two groups, the left gas processing net is a dust filter net, and the right gas processing net is an activated carbon purification net. The left ends of the two groups of gas processing nets are fitted with cleaning brushes, and the cleaning brushes are fixedly connected to the front side of the movable bracket;

[0016] The movable bracket drives the cleaning brush to move forward and backward inside the gas treatment box. A fixing mechanism is provided on the front side of the gas treatment net, and the fixing mechanism drives the gas treatment net to form a disassembly structure at the right end of the gas treatment box.

[0017] Preferably, the gas nozzle is inserted into the inside of the gas turbine intake pipe, and a fixed pressure strip is snap-connected at the edge of the left side of the gas turbine intake pipe, a sliding structure is formed between the fixed pressure strip and the movable rod, and a movable plate is fixedly connected to the left end of the movable rod.

[0018] Preferably, a left-right sliding structure is formed between the movable rod and the connecting plate, and the movable rod drives the movable plate to be fixed between the support rods on the left side of the connecting plate to form a sliding structure.

[0019] Preferably, a fixing cap for locking and limiting is threadedly connected to the outer surface of the support rod, and the fixing cap is fittedly arranged on the right end of the movable plate.

[0020] Preferably, the movable bracket is slidably connected to the right end of the gas processing box, and an auxiliary plate is fixedly connected to the upper side of the rear end of the movable bracket. The auxiliary plate and the gas processing box are limited by a fixing bolt, and the fixing bolt and the auxiliary plate as well as the fixing bolt and the gas processing box are all threadedly connected.

[0021] Preferably, a bottom plate is provided at the lower end of the gas processing network, the bottom plate is engaged with the lower right end of the gas processing box, and the bottom plate and the gas processing box are connected and fixed by threaded bolts.

[0022] Preferably, the fixing mechanism includes a movable column rotatably connected to the front side of the gas processing box, a fixed pressure column fixedly connected to the left and right ends of the movable column, a spring arranged inside the side of the fixed pressure column away from the movable column, a movable pin fixedly connected to the movable end of the spring, and a mounting column fixedly connected to the front side of the gas processing box and used for positioning.

[0023] Preferably, the movable pin is telescopically connected to a side of the fixed pressure column away from the movable column, and the fixed pressure column is fittedly arranged at the front end of the gas processing network.

[0024] Preferably, the movable pin is inserted in the middle of the mounting column.

[0025] Preferably, an exhaust pump is fixedly installed on the left side of the gas processing box, and the air outlet end on the right side of the exhaust pump is fixedly connected to a first air hood, and the air suction end on the left side of the exhaust pump is fixedly connected to a second air hood;

[0026] Wherein, the first gas hood is fitted on the partition in the middle of the gas processing box, and the second gas hood is fitted on the inner wall of the left end of the gas processing box and is connected with the air inlet groove.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the air intake device for the gas turbine test bench can dock gas turbine air intake pipes of different sizes through the docking mechanism, and combined with the setting of the fixed pressure strip, it is convenient to press and limit the gas turbine air intake pipe and the connecting plate, improve the tightness of the connection and prevent loosening, and the sealing gasket is arranged between the connecting plate and the gas turbine air intake pipe to improve the sealing effect of the connection, and the gas can be dusted and purified through the gas treatment network. At the same time, during the dust removal process, the dust attached to the gas treatment network can be cleaned by the cleaning brush to ensure the smoothness of the entire filtering and purification process and prevent blockage. By disassembling the bottom plate, it is convenient to clean the swept dust, and by the setting of the fixing mechanism, it is convenient to disassemble, clean and replace the gas treatment network. The overall structural design is relatively simple, the operation is convenient and quick, and it has strong practicality.

[0028] 1. It is equipped with a docking mechanism and a fixing strip. Through the setting of the docking mechanism, it can be docked and installed with the gas turbine intake pipe on gas turbines of different specifications and models. Combined with the setting of the fixing strip, it is convenient to quickly connect and fix the connection plate and the gas turbine intake pipe, and the fastening is good;

[0029] 2. It is equipped with a gas processing net, a cleaning brush and a bottom plate. The gas entering the docking mechanism is filtered and purified through the gas processing net. The dust attached to the outer surface of the gas processing net is cleaned by the cleaning brush to ensure the normality of the entire air intake process and prevent blockage. The dust swept out is easy to clean by disassembling the bottom plate;

[0030] 3. A fixing mechanism is provided, which includes a movable column, a fixed pressure column, a spring, a movable pin and a mounting column. Through the setting of the fixing mechanism, the gas processing network can be disassembled, cleaned and replaced very quickly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0033] Figure 3It is a schematic diagram of the gas turbine air intake pipe, sealing gasket, connecting plate and the explosion structure of the connecting plate of the present invention;

[0034] Figure 4 It is a schematic diagram of the side view structure of the connecting plate, the fixed pressure strip, the movable rod, the movable plate and the supporting rod of the present invention;

[0035] Figure 5 It is a schematic diagram of the front view and cross-section structure of the connecting pipe, the connecting plate, the gas nozzle and the gas turbine intake pipe of the present invention;

[0036] Figure 6 It is a side view structural diagram of the fixed pressure strip, movable rod, movable plate and support rod of the present invention;

[0037] Figure 7 This is a schematic diagram of the exploded structure of the fixed pressure strip, movable rod, movable plate and support rod of the present invention;

[0038] Figure 8 It is a schematic diagram of the side view structure of the gas processing box, the gas inlet slot, the gas processing net, the movable column and the fixed pressure column of the present invention;

[0039] Fig. 9 It is a schematic diagram of the front view and cross-section structure of the gas treatment box, the gas treatment net, the cleaning brush and the exhaust pump of the present invention;

[0040] Fig.10 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0041] Fig.11 It is a schematic diagram of the rear view structure of the gas treatment net, cleaning brush and movable bracket of the present invention;

[0042] Fig.12 This is a schematic diagram of the overall structure of the cleaning brush and the movable bracket of the present invention;

[0043] Fig.13 For the present invention Figure 8 The enlarged structural diagram at B in the middle;

[0044] Fig.14 This is a schematic diagram of the front view cutaway structure of the fixed pressure column and the movable pin of the present invention;

[0045] Fig.15 It is a schematic diagram of the front view and cross-section structure of the gas processing box, the gas processing net, the bottom plate, the first gas hood and the second gas hood of the present invention.

[0046] In the figure: 1. gas treatment box; 2. fixed bracket; 3. gas turbine air inlet pipe; 4. docking mechanism; 5. connecting pipe; 6. connecting plate; 7. gas nozzle; 8. sealing gasket; 9. fixing pressure strip; 10. movable rod; 11. movable plate; 12. support rod; 13. fixing cap; 14. gas treatment net; 15. cleaning brush; 16. movable bracket; 17. auxiliary plate; 18. fixing bolt; 19. bottom plate; 20. fixing mechanism; 21. movable column; 22. fixed pressure column; 23. spring; 24. movable pin; 25. mounting column; 26. exhaust pump; 27. first gas hood; 28. second gas hood; 29. ​​air inlet groove. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figure 1-Figure 14 , the present invention provides the following technical solutions:

[0049] Embodiment 1: In order to solve the problem in the prior art that when assembling and connecting the intake pipes of different gas turbines and the device, it is necessary to use a motor to drive the switching of different matching pipes for docking, which is cumbersome to operate and inconvenient to quickly and conveniently connect and disassemble the two, the present embodiment adopts the following technical scheme, an intake device for a gas turbine test bench, provided with a gas treatment box 1, a fixed bracket 2, a gas turbine intake pipe 3, a docking mechanism 4, a fixed pressure strip 9, a movable rod 10, a movable plate 11, a support rod 12 and a fixed cap 13, the gas treatment box 1 is welded to the upper end of the fixed bracket 2, the docking mechanism 4 is arranged at the right end of the gas treatment box 1, and the docking mechanism 4 is used to connect the gas turbine intake pipe 3 with the gas treatment box 1, the docking mechanism 4 includes a connecting pipe 5 fixed at the opening at the right end of the gas treatment box 1, and a connecting pipe 5 fixedly connected to the right end of the connecting pipe 5. A connecting plate 6 in the shape of a central disc, a gas nozzle 7 fixedly connected to the right end of the connecting plate 6 and a sealing gasket 8 fitted between the connecting plate 6 and the gas turbine air inlet pipe 3, the connecting plate 6 and the gas turbine air inlet pipe 3 are compressed and limited by a fixed pressure strip 9, and the fixed pressure strip 9 is arranged at an equal angle at the connection between the connecting plate 6 and the gas turbine air inlet pipe 3, the gas nozzle 7 is inserted into the inside of the gas turbine air inlet pipe 3, and the edge of the left side of the gas turbine air inlet pipe 3 is clamped and connected with a fixed pressure strip 9, a sliding structure is formed between the fixed pressure strip 9 and the movable rod 10, and a movable plate 11 is fixedly connected to the left end of the movable rod 10, a left-right sliding structure is formed between the movable rod 10 and the connecting plate 6, and the movable rod 10 drives the movable plate 11 to be fixed between the support rod 12 on the left side of the connecting plate 6 to form a sliding structure, the outer surface of the support rod 12 is threadedly connected with a fixing cap 13 for locking and limiting, and the fixing cap 13 is fitted at the right end of the movable plate 11;

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the gas turbine to be tested is first moved to the right side of the gas treatment box 1, and the gas turbine intake pipe 3 on the gas turbine is directly fitted and set on the sealing gasket 8. At this time, the gas nozzle 7 is directly inserted into the gas turbine intake pipe 3, and the diameter of the gas nozzle 7 is smaller than the diameter of the gas turbine intake pipe 3 of different specifications, and the diameter of the connecting plate 6 is larger than the diameter of the gas turbine intake pipe 3 of different specifications, so that it is convenient to dock and install the device with the gas turbine intake pipe 3 on gas turbines of different specifications, and the sealing gasket 8 is fitted and set between the connecting plate 6 and the gas turbine intake pipe 3, which greatly improves the sealing effect of the actual connection. After the connection is completed, by pulling the fixed pressure strip 9, the fixed pressure strip 9 slides with the movable rod 10, so that the fixed pressure strip 9 is close to the gas turbine. The protrusion on one side of the horizontal central axis of the gas turbine intake pipe 3 moves inward, and then the fixing cap 13 connected to the outer surface of the support rod 12 by rotating the thread, the fixing cap 13 and the movable plate 11 are arranged in a close fit, and the fixing cap 13 pushes the movable plate 11 and the support rod 12 to slide, and the movable plate 11 drives the movable rod 10 and the connecting plate 6 to slide, and the movable rod 10 drives the fixed pressure strip 9 to move to the left, at this time, the fixed pressure strip 9 drives the protrusion to be plugged and connected with the left side of the gas turbine intake pipe 3, and the fixed pressure strip 9 presses and fixes the gas turbine intake pipe 3, so as to facilitate the limit between the gas turbine intake pipe 3 and the connecting plate 6, and realize the docking between the gas turbine intake pipe 3 and the gas processing box 1, the overall docking has good tightness, and the installation and docking operation is relatively convenient;

[0051] Embodiment 2: The existing air intake device for the gas turbine test bench has the problem that during the purification process of the intake air, the filter screen is prone to clogging during long-term use, which affects the actual filtering process and is inconvenient for the filter screen to be cleaned and the dust to be cleaned. Therefore, a gas treatment net 14, a cleaning brush 15, a movable bracket 16, an auxiliary plate 17, a fixing bolt 18, a bottom plate 19, an exhaust pump 26, a first gas hood 27, a second gas hood 28 and an air intake slot 29 are provided. The gas treatment net 14 is plugged and installed on the right end of the gas treatment box 1, and the gas treatment net 14 is divided into two groups on the left and the right. The gas treatment net 14 on the left is a dustproof filter net, and the gas treatment net 14 on the right is an activated carbon purification net. The left ends of the two groups of gas treatment nets 14 are both fitted with a cleaning brush 15, and the cleaning brush 15 is fixedly connected to the front side of the movable bracket 16, and the movable bracket 16 is slidably connected It is connected to the right end of the gas treatment box 1, and an auxiliary plate 17 is fixedly connected to the upper side of the rear end of the movable bracket 16, and the auxiliary plate 17 and the gas treatment box 1 are limited by a fixing bolt 18, and the fixing bolt 18 and the auxiliary plate 17 as well as the fixing bolt 18 and the gas treatment box 1 are all threadedly connected. A bottom plate 19 is provided at the lower end of the gas treatment net 14, and the bottom plate 19 is engaged with the lower right end of the gas treatment box 1, and the bottom plate 19 and the gas treatment box 1 are connected and fixed by a threaded bolt, and an exhaust pump 26 is fixedly installed on the left side of the gas treatment box 1, and the air outlet end on the right side of the exhaust pump 26 is fixedly connected to the first gas hood 27, and the air suction end on the left side of the exhaust pump 26 is fixedly connected to the second gas hood 28, the first gas hood 27 is fitted on the partition in the middle of the gas treatment box 1, and the second gas hood 28 is fitted on the inner wall of the left end of the gas treatment box 1 and is connected to the air inlet groove 29;

[0052] like Figure 1 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.15As shown, the exhaust pump 26 is started, and the exhaust pump 26 sucks in the external gas through the second gas hood 28 and the air inlet groove 29 and sends it to the right end of the docking mechanism 4 through the first gas hood 27. After the gas passes through the gas processing network 14 on the left side for dust removal and filtration and the gas processing network 14 on the right side for purification, it is transported to the gas turbine intake pipe 3 through the connecting pipe 5 and the gas nozzle 7 and enters the gas turbine for testing. In addition, when the gas processing network 14 is filtered and purified, the fixing bolt 18 can be rotated to loosen the fixing bolt 18 to secure the auxiliary plate 17 and the gas. The movable bracket 16 is pulled forward and backward to slide forward and backward at the rear end of the gas treatment box 1, and the movable bracket 16 drives the cleaning brush 15 to clean the dust attached to the outer surface of the gas treatment net 14 to prevent the gas treatment net 14 from being blocked during long-term use, thereby ensuring the smooth flow of the entire air intake process. After use, the bottom plate 19 can be removed by removing the bolts connecting the bottom plate 19 and the bottom of the gas treatment box 1, thereby facilitating the cleaning of the swept dust.

[0053] Embodiment 3: In the existing air intake device for a gas turbine test bench, there is a filter installed inside the device, which is inconvenient to disassemble, replace and clean the filter. Therefore, a fixing mechanism 20 is provided. The front side of the gas processing network 14 is provided with a fixing mechanism 20, and the fixing mechanism 20 drives the gas processing network 14 to form a disassembly structure at the right end of the gas processing box 1. The fixing mechanism 20 includes a movable column 21 rotatably connected to the front side of the gas processing box 1, a fixed pressure column 22 fixedly connected to the left and right ends of the movable column 21, a spring 23 arranged inside the side of the fixed pressure column 22 away from the movable column 21, a movable pin 24 fixedly connected to the movable end of the spring 23, and a mounting column 25 fixedly connected to the front side of the gas processing box 1 and used for positioning. The movable pin 24 is telescopically connected to the side of the fixed pressure column 22 away from the movable column 21, and the fixed pressure column 22 is fitted at the front end of the gas processing network 14, and the movable pin 24 is inserted in the middle of the mounting column 25. Figure 1 , Figure 8 , Fig.13 and Fig.14 As shown, after use, the movable pin 24 can be pulled to slide between the movable pin 24 and the fixed pressure column 22. The movable pin 24 squeezes the spring 23, causing the spring 23 to elastically deform. At this time, the movable pin 24 moves out of the mounting column 25, thereby loosening the limit on the fixed pressure column 22, and then the movable column 21 is rotated. The movable column 21 rotates on the front side of the gas treatment box 1, and the movable column 21 drives the fixed pressure column 22 to disengage from the gas treatment network 14, thereby loosening the limit between the gas treatment network 14 and the gas treatment box 1, and then the gas treatment network 14 is pulled forward to move the gas treatment network 14 out of the interior of the gas treatment box 1, thereby facilitating the disassembly, cleaning and replacement of the gas treatment network 14.

[0054] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air intake device for a gas turbine test bench, comprising a gas treatment box (1), a fixing bracket (2) welded to the lower end of the gas treatment box (1), a gas turbine air intake pipe (3) arranged at the right end of the gas treatment box (1), and an air intake groove (29) opened at the left end of the gas treatment box (1); It is characterized in that Also includes: A docking mechanism (4), the docking mechanism (4) being arranged at the right end of the gas processing box (1), and being used to connect the gas turbine air intake pipe (3) and the gas processing box (1), the docking mechanism (4) comprising a connecting pipe (5) fixed at the opening at the right end of the gas processing box (1), a hollow disc-shaped connecting plate (6) fixedly connected to the right end of the connecting pipe (5), a gas nozzle (7) fixedly connected to the right end of the connecting plate (6), and a sealing gasket (8) fitted between the connecting plate (6) and the gas turbine air intake pipe (3); The connection plate (6) and the gas turbine air inlet pipe (3) are compressed and limited by a fixed pressure strip (9), and the fixed pressure strip (9) is arranged at an equal angle at the connection between the connection plate (6) and the gas turbine air inlet pipe (3), the diameter of the air nozzle (7) is smaller than the diameter of the gas turbine air inlet pipe (3), and the diameter of the connection plate (6) is larger than the diameter of the gas turbine air inlet pipe (3); A gas processing net (14), the gas processing net (14) is plugged and installed at the right end of the gas processing box (1), and the gas processing net (14) is divided into two groups, the left gas processing net (14) is a dust filter net, and the right gas processing net (14) is an activated carbon purification net. The left ends of the two groups of gas processing nets (14) are both fitted with cleaning brushes (15), and the cleaning brushes (15) are fixedly connected to the front side of the movable bracket (16); The movable bracket (16) drives the cleaning brush (15) to move forward and backward inside the gas treatment box (1), a fixing mechanism (20) is provided on the front side of the gas treatment net (14), and the fixing mechanism (20) drives the gas treatment net (14) to form a disassembly structure at the right end of the gas treatment box (1).

2. The air intake device for a combustion engine test bench according to claim 1, characterized in that: The gas nozzle (7) is inserted into the interior of the gas turbine air intake pipe (3), and a fixed pressure strip (9) is snap-connected at the edge of the left side of the gas turbine air intake pipe (3), a sliding structure is formed between the fixed pressure strip (9) and the movable rod (10), and a movable plate (11) is fixedly connected to the left end of the movable rod (10).

3. The air intake device for a combustion engine test bench according to claim 2, characterized in that: A left-right sliding structure is formed between the movable rod (10) and the connecting plate (6), and the movable rod (10) drives the movable plate (11) to be fixed between the support rods (12) on the left side of the connecting plate (6) to form a sliding structure.

4. The air intake device for a combustion engine test bench according to claim 3, characterized in that: The outer surface of the support rod (12) is threadedly connected with a fixing cap (13) for locking and limiting, and the fixing cap (13) is fitted on the right end of the movable plate (11).

5. The air intake device for a combustion engine test bench according to claim 1, characterized in that: The movable bracket (16) is slidably connected to the right end of the gas processing box (1), and an auxiliary plate (17) is fixedly connected to the upper side of the rear end of the movable bracket (16). The auxiliary plate (17) and the gas processing box (1) are limited by a fixing bolt (18), and the fixing bolt (18) and the auxiliary plate (17) as well as the fixing bolt (18) and the gas processing box (1) are all threadedly connected.

6. The air intake device for a combustion engine test bench according to claim 1, characterized in that: A bottom plate (19) is provided at the lower end of the gas processing network (14), the bottom plate (19) is engaged with the lower right end of the gas processing box (1), and the bottom plate (19) and the gas processing box (1) are connected and fixed by means of threaded bolts.

7. The air intake device for a combustion engine test bench according to claim 1, characterized in that: The fixing mechanism (20) comprises a movable column (21) rotatably connected to the front side of the gas processing box (1), a fixed pressure column (22) fixedly connected to the left and right ends of the movable column (21), a spring (23) arranged inside the fixed pressure column (22) on the side away from the movable column (21), a movable pin (24) fixedly connected to the movable end of the spring (23), and a mounting column (25) fixedly connected to the front side of the gas processing box (1) and used for positioning.

8. The air intake device for a combustion engine test bench according to claim 7, characterized in that: The movable pin (24) is telescopically connected to a side of the fixed pressure column (22) away from the movable column (21), and the fixed pressure column (22) is arranged in close contact with the front end of the gas processing network (14).

9. The air intake device for a combustion engine test bench according to claim 8, characterized in that: The movable pin (24) is inserted into the middle of the mounting column (25).

10. The air intake device for a combustion engine test bench according to claim 1, characterized in that: An exhaust pump (26) is fixedly installed on the left side of the gas processing box (1), and a first air hood (27) is fixedly connected to the air outlet end on the right side of the exhaust pump (26), and a second air hood (28) is fixedly connected to the air suction end on the left side of the exhaust pump (26); The first gas hood (27) is fitted on a partition in the middle of the gas processing box (1), and the second gas hood (28) is fitted on the inner wall of the left end of the gas processing box (1) and is connected to the gas inlet groove (29).

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