Efficient air inlet system of gas turbine

Abstract

The utility model relates to a gas turbine efficient air inlet system which comprises a box body, an air inlet is formed in the box body, a first frame and a second frame are arranged in the box body, the first frame is arranged at the end, close to the air inlet, of the box body, the overlook section of the first frame is linear, and the second frame is arranged on the side, away from the air inlet, of the first frame. The overlook cross section of the second frame is in a W shape, a plurality of filtering elements are arranged on the opposite end faces of the first frame and the second frame, the filtering elements located on the first frame are coarse filtering elements, and the filtering elements located on the end face, facing the first frame, of the second frame are medium filtering elements. The filter element on the end face of the second frame deviating from the first frame is a fine filter element. The effect of improving the gas inlet efficiency of the gas turbine is achieved.

Description

Technical Field

[0001] This application relates to the field of gas turbine processing technology, and in particular to a high-efficiency gas turbine intake system. Background Technology

[0002] A gas turbine is an internal combustion power machine that uses a continuously flowing gas as a working fluid to drive a high-speed rotating impeller, converting the energy of fuel into useful work. Gas turbines have very high requirements for air cleanliness. As the only line of defense for outside air entering the gas turbine, the intake system provides clean air that meets the requirements for the gas turbine through filtration, dehumidification and other measures, ensuring the normal operation of the gas turbine.

[0003] Currently, traditional gas turbine intake systems generally adopt a multi-stage filtration structure arranged in parallel, which requires a lot of installation space. At the same time, the parallel installation of multiple filtration structures increases the intake resistance of the intake system, increases the filtration energy consumption of the equipment, and reduces the intake efficiency of the gas turbine, which has obvious shortcomings. Utility Model Content

[0004] To improve the intake efficiency of gas turbines, this application provides a high-efficiency intake system for gas turbines.

[0005] The technical solution for a high-efficiency gas turbine intake system provided in this application is as follows:

[0006] A high-efficiency air intake system for a gas turbine includes a housing with an air inlet. A first frame and a second frame are disposed within the housing. The first frame is located at the end of the housing near the air inlet and has a straight cross-sectional shape in plan view. The second frame is located on the side of the first frame away from the air inlet and has a W-shaped cross-sectional shape in plan view. Multiple filter elements are disposed on the opposite end faces of both the first and second frames. The filter elements on the first frame are coarse filters, the filter elements on the second frame facing the end face of the first frame are intermediate filters, and the filter elements on the second frame away from the end face of the first frame are fine filters.

[0007] By adopting the above technical solution, the gas enters the coarse filter element of the first frame through the air inlet for preliminary diversion and filtration, and then flows through the medium filter element and fine filter element for fine filtration in sequence. This achieves multi-stage filtration of the intake air. At the same time, the W-shaped arrangement of the second frame increases the arrangement area of ​​the filter element. Without increasing the lateral dimension of the housing, the airflow channel is optimized through three-dimensional layout, so that the airflow forms a guiding diffusion effect along the W-shaped contour when passing through, reducing local pressure drop and intake resistance. This is different from the traditional planar filtration method, thereby effectively reducing the resistance to the introduction of filtered air and improving the intake efficiency of the gas turbine.

[0008] Optionally, both the first frame and the second frame are provided with multiple connecting components, and the filter element is detachably connected to the first frame or the second frame through the connecting components.

[0009] By adopting the above technical solution, the connecting components on the first frame and the second frame enable convenient replacement of the filter elements, allowing each filter element to be disassembled and replaced individually according to the degree of pollution during use, without having to completely dismantle the first frame or the second frame, thus improving the convenience of worker operation.

[0010] Optionally, multiple connecting components are evenly arranged in an array on the first frame or the second frame. Each connecting component includes a connecting post. The filter element has a connecting groove that slides with the connecting post. Receiving grooves are provided on opposite sides of the connecting post. A retaining block is slidably connected in the receiving groove. A retaining spring is provided in the receiving groove. The elastic force of the retaining spring pushes the retaining block to move out of the receiving groove. The end face of the retaining block abuts against the surface of the filter element. A driving component is provided on the connecting post to drive the retaining block to be embedded in the receiving groove.

[0011] By adopting the above technical solution, when disassembling the filter element, the worker drives the clamping block to detach from the surface of the filter element and move it into the receiving groove through the drive component. At this time, the clamping block loses its fixing effect, the clamping spring is in a compressed state, and the worker pulls the filter element to make the connecting column detach from the connecting groove, and the disassembly is completed.

[0012] When installing the filter element, the worker first inserts the clamping block into the receiving groove using the drive assembly. Then, the new filter element is placed on the outer surface of multiple connecting posts. After placement, the force of the drive assembly is released, and the clamping spring resets, pushing the clamping block to extend out of the receiving groove. The clamping block abuts against the outer surface of the filter element, thereby reducing the possibility of the filter element vibrating and detaching from the connecting posts due to airflow impact, thus realizing the installation of the filter element.

[0013] Optionally, the connecting post is provided with a drive groove, the drive assembly includes a take-up shaft rotatably connected to the drive groove, a pull rope corresponding to each of the two abutment blocks is wound on the take-up shaft, the free end of the pull rope is disposed at the end of the abutment block, and a locking assembly is provided on the connecting post to lock the rotation of the take-up shaft.

[0014] By adopting the above technical solution, when the clamping block needs to be inserted into the receiving groove, the worker rotates the winding shaft to wind up the pull rope. The free end of the pull rope pulls the clamping block into the receiving groove. At this time, the clamping spring is in a compressed state. The worker restricts the rotation of the winding shaft through the locking component, thereby locking the clamping block into the receiving groove. At this time, the worker can smoothly insert or pull out the connecting column of the filter element.

[0015] Optionally, the locking assembly includes a rotating plate slidably sleeved on the outer surface of the take-up shaft, a rotating groove on the connecting post that rotatably engages with the rotating plate, a locking bolt threaded onto the outer surface of the connecting post, the end of the locking bolt abutting against the rotating plate, a friction ring on the rotating plate, the friction ring being made of an elastic material, and a friction groove engaging with the friction ring being provided on the inner sidewall of the rotating groove.

[0016] By adopting the above technical solution, after the take-up roller pulls the clamping block into the clamping groove, the worker rotates the clamping bolt. When the clamping bolt rotates, it pushes the rotating plate towards the inner wall of the rotating groove. The rotating plate drives the friction ring to insert into the friction groove. At the same time, under the pressure of the clamping bolt, the friction ring is tightly filled inside the friction groove, thereby effectively improving the friction between the rotating ring and the rotating groove, reducing the possibility of the clamping block dislodging from the receiving groove due to the rotation of the take-up shaft, and ensuring the smooth disassembly and assembly of the filter element by the worker.

[0017] Optionally, the second frame includes multiple mounting brackets and multiple sealing plates. The connecting assembly is disposed on the mounting brackets. Each sealing plate is disposed between two adjacent mounting brackets. Multiple connecting lugs are disposed on opposite sides of each mounting bracket. A connecting bolt is disposed on each connecting lug. The end of the connecting bolt passes through the sealing plate and is threaded with a lock nut.

[0018] By adopting the above technical solution, the setting of the sealing plate and mounting bracket realizes the modular design of the second frame, which makes it easy to flexibly adjust the layout of the second frame according to actual needs.

[0019] Optionally, a sealing gasket is provided at the connection between the mounting bracket and the sealing plate, and the opposite end faces of the sealing gasket abut against the surfaces of the mounting bracket and the sealing plate, respectively.

[0020] By adopting the above technical solution, the setting of the sealing gasket improves the sealing performance of the connection between the sealing plate and the mounting bracket, effectively reducing the possibility of unfiltered gas entering the fine filtration area through gaps, and improving the filtration effect of multi-stage filtration.

[0021] Optionally, a rainproof canopy is provided on the outer surface of the housing located at the air inlet.

[0022] By adopting the above technical solutions, the rainproof canopy can reduce the possibility of rainwater entering the air intake system, reduce the possibility of rainwater impacting the filter element and causing it to become damp and fail, and keep the filter element in a dry working environment for a long time, thereby improving the service life of the filter element.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The embodiments of this application, by setting a W-shaped second frame, increase the arrangement area of ​​the filter element. Without increasing the lateral dimension of the housing, the airflow channel is optimized through three-dimensional layout, so that the airflow forms a guiding and diffusion effect along the W-shaped contour when passing through, reducing local pressure drop and intake resistance. This is different from the traditional planar filtration method, thereby effectively reducing the resistance to the introduction of filtered air and improving the intake efficiency of the gas turbine.

[0025] 2. The embodiments of this application provide a connecting component, which enables convenient replacement of the filter elements. Each filter element can be individually disassembled and replaced according to the degree of contamination during use, without the need to completely disassemble the first or second frame, thus improving the convenience of worker operation.

[0026] 3. In this embodiment of the application, by setting a sealing gasket, the sealing gasket improves the sealing performance of the connection between the sealing plate and the mounting bracket, effectively reducing the possibility of unfiltered gas entering the fine filtration area through gaps, and improving the filtration effect of multi-stage filtration. Attached Figure Description

[0027] Figure 1 This is a structural diagram of this application.

[0028] Figure 2 This is a cross-sectional view of the box in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the mounting bracket and sealing plate in an embodiment of this application.

[0030] Figure 4 This is a cross-sectional view of the connecting column in the embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Housing; 101. Rainproof canopy; 2. First frame; 3. Second frame; 31. Mounting bracket; 32. Sealing plate; 33. Connecting ear plate; 34. Connecting bolt; 35. Locking nut; 36. Sealing gasket; 4. Filter element; 41. Connecting groove; 5. Connecting assembly; 51. Connecting column; 511. Receiving groove; 512. Drive groove; 513. Rotating groove; 5131. Friction groove; 52. Clamping block; 53. Clamping spring; 6. Drive assembly; 61. Rewinding shaft; 62. Pull rope; 7. Locking assembly; 71. Rotating plate; 72. Clamping bolt; 73. Friction ring. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a high-efficiency air intake system for gas turbines.

[0034] Reference Figure 1 A gas turbine high-efficiency air intake system includes a housing 1, on which an air intake port (not shown in the figure) is provided. A rainproof canopy 101 is fixedly installed at the end of the housing 1 near the air intake port. The rainproof canopy 101 can reduce the possibility of rainwater entering the air intake system and keep the filter element 4 in a dry working environment for a long time.

[0035] Reference Figure 1 and Figure 2 The housing 1 is fixedly installed with a first frame 2 and a second frame 3. The first frame 2 is located at the end of the housing 1 near the air inlet, and the top view cross-section of the first frame 2 is straight. The second frame 3 is located on the side of the first frame 2 away from the air inlet, and the top view cross-section of the second frame 3 is W-shaped.

[0036] Reference Figure 1 and Figure 2 Multiple filter elements 4 are installed on the opposite end faces of the first frame 2 and the second frame 3. The filter element 4 on the first frame 2 is a coarse filter element, the filter element 4 on the end face of the second frame 3 facing the first frame 2 is a medium filter element, and the filter element 4 on the end face of the second frame 3 away from the first frame 2 is a fine filter element.

[0037] Gas enters the coarse filter element of the first frame 2 through the air inlet for preliminary diversion and filtration. After preliminary filtration, the gas continues to flow to the second frame 3. When the airflow passes through the second frame 3, it forms a guiding and diffusion effect along the W-shaped contour, reducing local pressure drop and intake resistance. Subsequently, the gas passes through the middle filter element and fine filter element for further filtration, and finally enters the gas turbine for operation. This achieves multi-stage filtration of the intake air. At the same time, the W-shaped arrangement of the second frame 3 increases the arrangement area of ​​the filter element 4. Without increasing the lateral dimension of the housing 1, the airflow channel is optimized through three-dimensional layout, which is different from the traditional planar filtration method. This effectively reduces the resistance to the introduction of filtered air and improves the intake efficiency of the gas turbine.

[0038] Reference Figure 2 and Figure 3 The second frame 3 includes multiple mounting brackets 31 and multiple sealing plates 32. The filter element 4 is mounted on the mounting bracket 31. Each sealing plate 32 is disposed between two adjacent mounting brackets 31. Multiple connecting ear plates 33 are fixedly connected to the opposite sides of each mounting bracket 31. The multiple connecting ear plates 33 are evenly and equidistantly arranged in the vertical direction. Each connecting ear plate 33 is provided with a connecting bolt 34. The end of the connecting bolt 34 passes through the sealing plate 32 and is threaded with a locking nut 35.

[0039] The second frame 3 is modularly designed using the sealing plate 32 and the mounting bracket 31, which allows for flexible adjustment of the layout of the second frame 3 according to actual needs.

[0040] Reference Figure 2 and Figure 3 Each mounting bracket 31 is fixedly connected to the sealing plate 32 with a sealing gasket 36. The sealing gasket 36 fills the gap between the mounting bracket 31 and the sealing plate 32 through the connection of the connecting bolt 34 and the locking nut 35, effectively reducing the possibility of gas that has not been filtered by the middle filter element entering the fine filter area through the gap, and improving the filtration effect of multi-stage filtration.

[0041] Reference Figure 3 and Figure 4 Multiple connecting components 5 are provided on both the first frame 2 and the second frame 3. The multiple connecting components 5 are arranged in an array and are evenly arranged. The filter element 4 is detachably connected to the first frame 2 or the second frame 3 through the connecting components 5. In this embodiment, each filter element 4 is installed on the first frame 2 or the second frame 3 through four connecting components 5. The setting of the connecting components 5 allows each filter element 4 to be disassembled and replaced individually according to the degree of pollution during use, without having to completely disassemble the first frame 2 or the second frame 3, which improves the convenience of worker operation.

[0042] Reference Figure 3 and Figure 4 The connecting assembly 5 includes a connecting post 51. The filter element 4 has a connecting groove 41 that slides with the connecting post 51. In this embodiment, each filter element 4 has four connecting grooves 41, which are respectively located at the four corners of the filter element 4. The connecting post 51 has a receiving groove 511 on both radially opposite sides. A pressing block 52 is slidably connected in each receiving groove 511. A pressing spring 53 is provided in the receiving groove 511. One end of the pressing spring 53 is fixedly connected to the inner side wall of the receiving groove 511, and the other end is fixedly connected to the pressing block 52. The elastic force of the pressing spring 53 pushes the pressing block 52 to move out of the receiving groove 511 and abut against the surface of the filter element 4.

[0043] Reference Figure 3 and Figure 4 Each connecting post 51 has a drive groove 512 axially provided. A drive assembly 6 is provided inside the drive groove 512. Specifically, the drive assembly 6 includes a take-up shaft 61 rotatably connected inside the drive groove 512. A pull rope 62 corresponding to the two abutment blocks 52 is wound on the take-up shaft 61. The free end of the pull rope 62 is fixedly connected to the end of the abutment block 52. The end of the take-up shaft 61 passes through the drive groove 512 and extends to be flush with the outer surface of the connecting post 51.

[0044] Reference Figure 3 and Figure 4A locking assembly 7 is provided on the connecting post 51. The locking assembly 7 includes a rotating plate 71 that is slidably connected to the outer surface of the take-up shaft 61 along the axial direction of the connecting post 51. A rotating groove 513 is provided on the connecting post 51 to rotate and cooperate with the rotating plate 71. Both radially opposite sides of the outer edge of the connecting post 51 are threaded with abutting bolts 72. In this embodiment, the abutting bolts 72 are screw bolts. The ends of the abutting bolts 72 abut against the rotating plate 71. A friction ring 73 is fixedly connected to the rotating plate 71 away from the end face of the abutting bolts 72. The friction ring 73 is made of elastic material. In this embodiment, the friction ring 73 is made of rubber material. A friction groove 5131 that cooperates with the friction ring 73 is provided on the inner side wall of the rotating groove 513.

[0045] When it is necessary to disassemble the filter element 4, the worker first rotates the clamping bolt 72 in the reverse direction. The clamping bolt 72 gradually moves away from the surface of the rotating ring, and the pressure on the rotating ring disappears. The friction ring 73 no longer fits tightly with the friction groove 5131 under its own elasticity. At this time, the locking effect of the locking component 7 disappears. The worker rotates the winding shaft 61 in the forward direction to make the pull rope 62 wind up. The free end of the pull rope 62 pulls the clamping block 52 away from the surface of the filter element 4 and into the receiving groove 511. The clamping spring 53 is in a compressed state. Then the worker rotates the clamping bolt 72 in the forward direction. The clamping bolt 72 moves toward the rotating ring and presses the friction ring 73 into the friction groove 5131. The friction between the friction ring 73 and the friction groove 5131 and the pressure of the clamping bolt 72 lock the rotation of the winding shaft 61. Finally, the worker pulls the filter element 4 outward to make the connecting column 51 disengage from the connecting groove 41, and the disassembly is completed.

[0046] When installing a new filter element 4, the worker aligns the connecting post 51 with the connecting groove 41, placing the filter element 4 on the outer surface of the multiple connecting posts 51. After placement, the worker rotates the clamping bolt 72 in the opposite direction to disengage it from the rotating ring. At this time, the locking effect on the winding shaft 61 disappears, the pressure on the clamping spring 53 decreases, and the clamping spring 53 resets, pushing the clamping block 52 to extend out of the receiving groove 511. The clamping block 52 abuts against the outer surface of the filter element 4, thereby reducing the possibility of the filter element 4 vibrating and disengaging from the connecting post 51 due to airflow impact, thus realizing the installation of the filter element 4.

[0047] The implementation principle of a high-efficiency gas turbine intake system according to an embodiment of this application is as follows: gas enters the coarse filter element of the first frame 2 through the intake port for preliminary diversion and filtration. After preliminary filtration, the gas continues to flow to the second frame 3. When the airflow passes through the second frame 3, it forms a guiding and diffusion effect along the W-shaped contour, reducing local pressure drop and intake resistance. Subsequently, the gas passes through the middle filter element and the fine filter element for further filtration, and finally enters the gas turbine for operation. This achieves multi-stage filtration of the intake air. At the same time, the W-shaped arrangement of the second frame 3 increases the arrangement area of ​​the filter element 4. Without increasing the lateral dimension of the housing 1, the airflow channel is optimized through three-dimensional layout, which is different from the traditional planar filtration method. This effectively reduces the resistance to the introduction of filtered air and improves the intake efficiency of the gas turbine.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-efficiency air intake system for a gas turbine, comprising a housing (1), wherein the housing (1) has an air intake port, characterized in that, The housing (1) is provided with a first frame (2) and a second frame (3). The first frame (2) is located at the end of the housing (1) near the air inlet. The top view cross-section of the first frame (2) is straight. The second frame (3) is located on the side of the first frame (2) away from the air inlet. The top view cross-section of the second frame (3) is W-shaped. Multiple filter elements (4) are provided on the opposite end faces of the first frame (2) and the second frame (3). The filter element (4) located on the first frame (2) is a coarse filter element. The filter element (4) located on the end face of the second frame (3) facing the first frame (2) is a medium filter element. The filter element (4) located on the end face of the second frame (3) away from the first frame (2) is a fine filter element.

2. The high-efficiency gas turbine intake system according to claim 1, characterized in that, Both the first frame (2) and the second frame (3) are provided with multiple connecting components (5), and the filter element (4) is detachably connected to the first frame (2) or the second frame (3) through the connecting components (5).

3. The high-efficiency gas turbine intake system according to claim 2, characterized in that, Multiple connecting components (5) are evenly arranged in an array on the first frame (2) or the second frame (3). Each connecting component (5) includes a connecting post (51). The filter element (4) has a connecting groove (41) that slides with the connecting post (51). Each side of the connecting post (51) has a receiving groove (511). A pressing block (52) is slidably connected in the receiving groove (511). A pressing spring (53) is provided in the receiving groove (511). The elastic force of the pressing spring (53) pushes the pressing block (52) to move out of the receiving groove (511). The end face of the pressing block (52) abuts against the surface of the filter element (4). A driving component (6) is provided on the connecting post (51) to drive the pressing block (52) to be embedded in the receiving groove (511).

4. The high-efficiency gas turbine intake system according to claim 3, characterized in that, The connecting post (51) is provided with a drive groove (512), and the drive assembly (6) includes a take-up shaft (61) rotatably connected to the drive groove (512). A pull rope (62) corresponding to the two abutment blocks (52) is wound on the take-up shaft (61). The free end of the pull rope (62) is located at the end of the abutment block (52). The connecting post (51) is provided with a locking assembly (7) for locking the rotation of the take-up shaft (61).

5. The high-efficiency gas turbine intake system according to claim 4, characterized in that, The locking assembly (7) includes a rotating plate (71) slidably sleeved on the outer surface of the take-up shaft (61), a rotating groove (513) is provided on the connecting post (51) to rotate with the rotating plate (71), a clamping bolt (72) is threaded on the outer surface of the connecting post (51), the end of the clamping bolt (72) abuts against the rotating plate (71), a friction ring (73) is provided on the rotating plate (71), the friction ring (73) is made of elastic material, and a friction groove (5131) is provided on the inner side wall of the rotating groove (513) to cooperate with the friction ring (73).

6. The high-efficiency gas turbine intake system according to claim 4, characterized in that, The second frame (3) includes multiple mounting brackets (31) and multiple sealing plates (32). The connecting assembly (5) is disposed on the mounting bracket (31). Each sealing plate (32) is disposed between two adjacent mounting brackets (31). Multiple connecting lugs (33) are disposed on opposite sides of each mounting bracket (31). Each connecting lug (33) is provided with a connecting bolt (34). The end of the connecting bolt (34) passes through the sealing plate (32) and is threaded with a lock nut (35).

7. A high-efficiency gas turbine intake system according to claim 6, characterized in that, A sealing gasket (36) is provided at the connection between the mounting bracket (31) and the sealing plate (32), and the opposite end faces of the sealing gasket (36) abut against the surfaces of the mounting bracket (31) and the sealing plate (32).

8. The high-efficiency gas turbine intake system according to claim 1, characterized in that, The housing (1) is provided with a rainproof canopy (101) on the outer surface of the air inlet.

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