Gas turbine air inlet filtering system with adjustable filtering surface area

Abstract

The utility model relates to the technical field of gas turbine inlet air filtering, in particular to a gas turbine inlet air filtering system with an adjustable filtering surface area, which comprises a shell, a partition plate is arranged in the shell, an air channel is divided into a first air channel and a second air channel by the partition plate, an air vent is arranged on the partition plate, and a group of internal threaded holes are arranged at the top of the shell. A second threaded rod and a baffle are sequentially connected to the lower portion of the connecting rod, a rotary handle is connected to the upper portion of the first threaded rod, detachable top covers are arranged on the right sides of the inner threaded holes, sliding grooves are formed in the lower portions of the detachable top covers, and the sliding grooves are fixed to the front side wall and the rear side wall of an inner cavity of the shell correspondingly; a rough filtration filter plate is mounted between the sliding chutes and is in sliding fit with the sliding chutes; according to the gas turbine inlet air filtering device disclosed by the utility model, the total area of the filtering surface can be adjusted according to the actual use condition, and the coarse filtering plate can be replaced in the working state of the filtering device, so that the gas turbine inlet air filtering device has stronger applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of gas turbine inlet air filtration, and particularly relates to a gas turbine inlet air filtration system with an adjustable filter surface area. Background Technique

[0002] The performance and operation reliability of a gas turbine are closely related to the quality and cleanliness of the air entering the unit. As the only line of defense for the outside air to enter the gas turbine, in order to ensure the high-efficiency operation of the unit, a good inlet air system must be configured to filter the air entering the unit, which can not only filter out the impurities therein, but also minimize the number of shutdowns as much as possible.

[0003] The total area of the coarse filter surface of the traditional gas turbine inlet air filtration system cannot be adjusted according to the actual use situation, and the coarse filter plates of the traditional gas turbine inlet air filtration system cannot be replaced during the working process, and the filter plates can only be replaced when the filtration system stops working, which is relatively inconvenient to use. Summary of the Invention

[0004] Purpose of the Invention: The purpose of the utility model is to provide a gas turbine inlet air filtration system with an adjustable filter surface area in view of the deficiencies of the prior art to solve the above-mentioned problems.

[0005] Technical Solution: The gas turbine inlet air filtration system with an adjustable filter surface area described in the utility model includes a housing. A partition is arranged inside the inner cavity of the housing. A group of ventilation openings are arranged on the partition. A group of internal threaded holes are arranged at the top of the housing. Removable top covers are arranged on the right sides of the internal threaded holes. A group of chutes are arranged below the removable top covers. The chutes are respectively fixed on the front and rear side walls of the inner cavity of the housing. A coarse filter plate is installed between the chutes. The coarse filter plate is slidably matched with the chutes. A second ash hopper is connected to the lower part of the housing opposite to the coarse filter plate.

[0006] Preferably, a rotating handle, a first threaded rod, a connecting rod, a second threaded rod and a baffle are arranged inside the housing. The top of the baffle is rotatably connected to the second threaded rod. The top of the second threaded rod is fixedly connected to the connecting rod. The top of the connecting rod is fixedly connected to the first threaded rod. The first threaded rod is threadedly connected to the internal threaded hole. The top of the first threaded rod is connected to the rotating handle.

[0007] Preferably, a cathode plate and an anode plate are further arranged inside the housing. The cathode plate and the anode plate are connected to the inner wall of the housing between the connecting rod and the air inlet. A vibration device for ash cleaning is connected above both the cathode plate and the anode plate. A first ash hopper is connected to the lower part of the housing opposite to the cathode plate and the anode plate.

[0008] Preferably, a fine filter cartridge, a compressed air chamber and a compressed air nozzle on a backflush pipe which cooperate with each other are further arranged in the housing, the nozzle is arranged right above the fine filter cartridge below, and a third ash hopper is connected to the lower part of the housing where the fine filter cartridge is located.

[0009] Preferably, the coarse filter plate includes a coarse filter frame and a coarse filter screen, and the coarse filter screen is arranged in the middle of the coarse filter frame.

[0010] Preferably, the detachable top cover is installed on the top of the housing through bolts.

[0011] Preferably, the minimum inner diameter of the internal thread hole is greater than the diameter of the connecting rod.

[0012] Preferably, the first threaded rod and the second threaded rod have a rotation locking mechanism.

[0013] The utility model has the following beneficial effects compared with the prior art: (1) The filter plate can be replaced online: the system allows the filter plate to be replaced under the working state without stopping the operation of the filtration system, which can reduce the downtime and improve the efficiency;

[0014] (2) Strong applicability and flexibility: Under different environments and working conditions, the requirements for the intake air quality and ventilation volume may be different. By adjusting the total filtration area of the two air channels, the system can be adjusted according to the changes of the environment and working conditions to ensure good intake air quality for the gas turbine and maintain a stable working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : The front view structural schematic diagram of the utility model;

[0016] Figure 2 : The left view structural schematic diagram of the utility model;

[0017] Figure 3 : The top view structural schematic diagram of the utility model;

[0018] Figure 4 : The top view structural schematic diagram of the utility model after the middle rotatable baffle is lifted;

[0019] Figure 5 : The schematic diagram of the chute and the filter plate in the utility model.

[0020] The reference numerals are as follows: 1, housing; 21, cathode plate; 22, anode plate; 23, ash vibrating device; 24, first ash hopper; 31, rotating handle; 32, first threaded rod; 33, connecting rod; 34, second threaded rod; 35, baffle plate; 36, internal threaded hole; 41, detachable top cover; 42, slide rail; 43, coarse filter plate, 431, coarse filter frame, 432, coarse filter screen; 44, second ash hopper; 51, compressed air chamber; 52, compressed air nozzle; 53, fine filter cartridge; 54, third ash hopper; 6, ventilation port; 7, air inlet; 8, partition plate. Detailed implementation manners

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0023] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] The technical solutions of the present invention will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0025] Refer to Figure 1 、 Figure 2 and Figure 3: A gas turbine intake air filtration system with adjustable filter surface area, including a housing 1, characterized in that a partition 8 is provided inside the inner cavity of the housing 1, a group of ventilation openings 6 are provided on the partition 8, a group of internal threaded holes 36 are provided at the top of the housing 1, removable top covers 41 are provided on the right sides of the internal threaded holes 36, a group of chutes 42 are provided below the removable top covers 41, the chutes 42 are respectively fixed on the front and rear side walls of the inner cavity of the housing 1, a coarse filter plate 43 is installed between the chutes 42, the coarse filter plate 43 is slidably matched with the chutes 42, and a second ash hopper 43 is connected below the housing 1 opposite to the coarse filter plate 43. A rotary handle 31, a first threaded rod 32, a connecting rod 33, a second threaded rod 34 and a baffle 35 are provided inside the housing 1, and the first threaded rod 32 and the second threaded rod 34 have a rotation locking mechanism; the top of the baffle 35 is rotatably connected to the second threaded rod 34, the top of the second threaded rod 34 is fixedly connected to the connecting rod 33, the top of the connecting rod 33 is fixedly connected to the first threaded rod 32, the first threaded rod 32 is threadedly connected to the internal threaded hole 36, and the top of the first threaded rod 32 is connected to the rotary handle 31. A cathode plate 21 and an anode plate 22 are also provided inside the housing 1, the cathode plate 21 and the anode plate 22 are connected to the inner wall of the housing 11 between the connecting rod 33 and the air inlet 7, and a vibrating device 23 for ash cleaning is connected above both the cathode plate 21 and the anode plate 22, and a first ash hopper 24 is connected below the housing 1 opposite to the cathode plate 21 and the anode plate 22. A fine filter cartridge 53, a compressed air chamber 51 and a compressed air nozzle 52 on the backflush pipe are also provided inside the housing 1 and are cooperatively connected, the nozzle 52 is arranged facing the fine filter cartridge 53 below, and a third ash hopper 54 is connected below the housing where the fine filter cartridge 53 is located;

[0026] Specifically, the coarse filter plate 43 includes a coarse filter frame 431 and a coarse filter screen 432, and the coarse filter screen 432 is arranged in the middle of the coarse filter frame 431. The removable top cover 41 is installed on the top of the housing 1 by bolts. The minimum inner diameter of the internal threaded hole 36 is greater than the diameter of the connecting rod 33. The first threaded rod 32 and the second threaded rod 34 have a rotation locking mechanism, so that they can rotate when needed and are fixed in place at a specific position.

[0027] When the utility model is in use, the gas with dust impurities enters between the cathode plate 21 and the anode plate 22 through the left air inlet 7. The positively charged dust is adsorbed on the cathode plate 21, and the negatively charged dust is adsorbed on the anode plate 22. Then, the dust adsorbed on the two plates is vibrated and fallen into the first ash hopper 24 below through the vibrating device 23. When the dust with positive and negative ions passes through, it will be adsorbed onto the plate, and part of the dust will fall into the ash hopper below through vibration, filtering part of the dust passing through the coarse filter plate in advance, effectively avoiding the blockage of the coarse filter plate, prolonging the service life of the coarse filter plate, and maintaining the normal operation of the equipment. Then, the gas dust-removed by the cathode plate 21 and the anode plate 22 passes through the coarse filter plate 43 for coarse filter dust removal, and then passes through the fine filter cylinder 53 for fine filter high-efficiency dust removal. At the same time, an anti-blowing dust removal device is added above the fine filter cylinder 53. Compressed air is sprayed into the interior of the fine filter cylinder 53 from the compressed air bin 51 through the compressed air nozzle 52, and the dust on the outer surface of the fine filter cylinder 53 is blown down to the third ash hopper 54 below the fine filter cylinder 53, which reduces the replacement frequency of the fine filter cylinder. At the same time, the device also designs a rotatable baffle device and a chute coarse filter plate device. The rotatable baffle device is composed of a rotary handle 31, a connecting rod 33, a first screw rod 32, a second screw rod 34 and a baffle 35. By rotating and lifting the rotary handle 31 to drive the rotation and lifting of the baffle 35, functions such as single air channel operation, variable area operation of the double air channel, and replacement of the coarse filter plate in the working state can be realized. The specific implementation scheme is as follows:

[0028] As Figure 3 shown, at this time, the first threaded rod 32 is screwed into the threaded hole 36. The connecting rod 33 and the baffle 35 are respectively located in the first and second air channels. Since the connecting rod 33 cannot block the gas forward path of the first air channel, and since the plane of the baffle 35 is parallel and equal to the cross-section of the second air channel, air can only enter the first air channel for coarse filtration. The following takes the case where the filtration plate area of the first air channel remains unchanged and the filtration plate area of the second air channel changes as an example for specific description.

[0029] When both air channels can pass gas and it is necessary to change the total area of the coarse filter surface, the rotary handle 31 can be rotated to make the first threaded rod 32 rotate inside the threaded hole 36. By driving the rotating baffle 35 through the connecting rod 33, when the baffle plane is not parallel to the cross-section of the second air channel, the baffle does not completely block the gas forward path of the second air channel, and gas can enter the first and second air channels simultaneously for filtration. In this way, rotating the rotary handle 31 to drive the connecting rod 33 to drive the baffle 35 to rotate in the second air channel realizes the change of the area of the second air channel and thus changes the total area of the coarse filter plate of the system.

[0030] When both air channels can pass gas and the total area of the coarse filter surface needs to be maximized, the rotary handle 31 can be rotated to make the first threaded rod 32 rotate inside the threaded hole 36. By driving the rotating baffle 35 through the connecting rod 33, when the plane of the baffle is perpendicular to the cross-section of the second air channel, the baffle basically does not block the gas forward path of the second air channel, and the gas can enter the first and second air channels simultaneously for filtration, and the total area of the coarse filter surface reaches the maximum.

[0031] When it is necessary to replace the coarse filter plate inside the second air channel, the rotary handle 31 can be rotated to make the first threaded rod 32 rotate inside the threaded hole 36. By driving the rotating baffle 35 through the connecting rod 33, when the plane of the baffle is parallel to the cross-section of the second air channel, the baffle completely blocks the gas forward path of the second air channel, and the gas can only enter the first air channel for filtration. At this time, the user can remove the detachable top cover 3 above the filter plate 5 to be replaced inside the second air channel and take out the filter plate 5 for replacement. This setting can also achieve the replacement of the filter plate 5 without stopping the operation of the filter, which facilitates the replacement work of the operator.

[0032] As Figure 4 shown, at this time, the second threaded rod 34 is screwed into the threaded hole 36, and the connecting rod 33 and the baffle 35 are located outside the housing and inside the first air channel respectively. Since the plane of the baffle 35 is parallel and equal to the cross-section of the first air channel, the air can only enter the second air channel for coarse filtration. The following takes the case where the area of the filter plate in the second air channel remains unchanged and the area of the filter plate in the first air channel changes as an example for specific description.

[0033] When both air channels can pass gas and it is necessary to change the total area of the coarse filter surface, the rotary handle 31 can be rotated to make the second threaded rod 32 rotate inside the threaded hole 36. By driving the rotating baffle 35 through the connecting rod 33, when the plane of the baffle is not parallel to the cross-section of the first air channel, the baffle does not completely block the gas forward path of the first air channel, and the gas can enter the first and second air channels simultaneously for filtration. In this way, rotating the rotary handle 31 drives the connecting rod 33 to drive the baffle 35 to rotate inside the first air channel to change the area of the first air channel, thereby changing the total area of the coarse filter plates of the system.

[0034] When both air channels can pass gas and the total area of the coarse filter surface needs to be maximized, the rotary handle 31 can be rotated to make the second threaded rod 32 rotate inside the threaded hole 36. By driving the rotating baffle 35 through the connecting rod 33, when the plane of the baffle is perpendicular to the cross-section of the first air channel, the baffle basically does not block the gas forward path of the first air channel, and the gas can enter the first and second air channels simultaneously for filtration, and the total area of the coarse filter surface reaches the maximum.

[0035] When it is necessary to replace the coarse filter plate inside the first air passage, the rotary handle 31 can be rotated so that the second threaded rod 32 rotates inside the threaded hole 36. By driving the rotating baffle 35 through the connecting rod 33, when the plane of the baffle is parallel to the cross-section of the first air passage, the baffle completely blocks the gas forward path of the first air passage, and the gas can only enter the second air passage for filtration. At this time, the user can remove the detachable top cover 3 below the filter plate 5 to be replaced inside the first air passage and take out the filter plate 5 for replacement. This setting can also achieve the replacement of the filter plate 5 without stopping the operation of the filter, facilitating the replacement work of the operator.

[0036] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first feature and the second feature are in direct contact, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples", etc., means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0037] Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0038] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas turbine intake air filtration system with adjustable filter surface area, comprising a housing (1), characterized in that: Inside the cavity of the housing (1), a partition plate (8) is provided. A set of ventilation openings (6) are provided on the partition plate (8). A set of internal threaded holes (36) are provided at the top of the housing (1). Removable top covers (41) are provided on the right sides of the internal threaded holes (36). A set of chutes (42) are provided below the removable top covers (41). The chutes (42) are respectively fixed on the front and rear side walls of the inner cavity of the housing (1). A coarse filter plate (43) is installed between the chutes (42). The coarse filter plate (43) is in sliding fit with the chutes (42). A second ash hopper (44) is connected below the housing (1) opposite to the coarse filter plate (43).

2. The gas turbine intake air filtration system with adjustable filter surface area according to claim 1, wherein: A rotary handle (31), a first threaded rod (32), a connecting rod (33), a second threaded rod (34), and a baffle (35) are provided inside the housing (1). The top of the baffle (35) is rotatably connected to the second threaded rod (34). The top of the second threaded rod (34) is fixedly connected to the connecting rod (33). The top of the connecting rod (33) is fixedly connected to the first threaded rod (32). The first threaded rod (32) is threadedly connected to the internal threaded hole (36). The top of the first threaded rod (32) is connected to the rotary handle (31).

3. The gas turbine intake air filtration system with adjustable filter surface area according to claim 1, characterized in that: A cathode plate (21) and an anode plate (22) are further provided inside the housing (1). The cathode plate (21) and the anode plate (22) are connected to the inner wall of the housing (1) between the connecting rod (33) and the air inlet (7). And a vibrating device (17) for dust cleaning is connected above both the cathode plate (21) and the anode plate (22). A first ash hopper (23) is connected below the housing (1) opposite to the cathode plate (21) and the anode plate (22).

4. The gas turbine air intake filtration system with adjustable filter surface area according to claim 1, characterized in that: A fine filter cylinder (53), a compressed air chamber (51), and a compressed air nozzle (52) on the backwashing pipe are also provided and are cooperatively arranged inside the housing (1). The nozzle (52) is arranged facing the fine filter cylinder (53) below. A third ash hopper (54) is connected below the housing (1) where the fine filter cylinder (53) is located.

5. The gas turbine intake air filtration system with adjustable filter surface area according to claim 1, characterized in that: The coarse filter plate (43) includes a coarse filter frame (431) and a coarse filter screen (432). The coarse filter screen (432) is arranged in the middle of the coarse filter frame (431).

6. The gas turbine intake air filtration system with adjustable filter surface area according to claim 1, characterized in that: The removable top cover (41) is installed on the top of the housing (1) by bolts.

7. The gas turbine intake air filtration system with adjustable filter surface area according to claim 2, characterized in that: The minimum inner diameter of the internal threaded hole (36) is greater than the diameter of the connecting rod (33).

8. The gas turbine intake air filtration system with adjustable filter surface area according to claim 2, characterized in that: The first threaded rod (32) and the second threaded rod (34) have a rotation locking mechanism.

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