A gas turbine casing vent duct arrangement

Abstract

The utility model provides a kind of gas turbine cover shell ventilation pipeline arrangement structure, it is related to gas turbine cover shell technical field, including cover shell body, pipeline one, pipeline two and annular plate, the inside fixed mounting filter screen of annular plate.In the utility model, by the combination structure of insert block, fixed sleeve and limiting insertion rod, spring, the tool-free quick disassembly of filter screen is realized, when installing, staff only needs to insert the insert block of annular plate into fixed sleeve, unfasten pre-pulled pull handle, spring resets and can drive limiting insertion rod automatic insertion limit hole and complete locking, when disassembling, just pull handle makes limiting insertion rod separate from limit hole, annular plate can be directly lifted to remove filter screen, the whole process does not need any professional tool, operation step is simplified, one person can complete, compared with traditional bolt fixing mode, improve filter screen replacement maintenance efficiency, effectively reduce the shutdown length of gas turbine due to filter screen maintenance, significantly improve operation and maintenance efficiency, reduce industrial production interruption risk.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine casing technology, and in particular to a ventilation duct arrangement structure for a gas turbine casing. Background Technology

[0002] In industries such as energy, power, and aerospace, gas turbines serve as core power equipment, and their operational stability and efficiency directly determine the performance of the entire system. Gas turbines generate a large amount of heat during high-speed operation, and their internal precision components have extremely high requirements for the cleanliness, temperature, and pressure of the working environment. Therefore, the gas turbine must be enclosed and protected by a casing, and a ventilation duct system must be used to allow air circulation between the inside of the casing and the outside environment to achieve heat dissipation, maintain air pressure balance, and prevent the intrusion of dust and impurities.

[0003] Currently, the traditional ventilation duct layout of gas turbine casings has drawbacks in practical applications. The filter screens on the ventilation ducts are mostly connected to the ducts by bolts. When bolts are used, if the filter screens become clogged or damaged due to long-term use and need to be replaced or maintained, special tools must be used to disassemble the bolts one by one. This operation is cumbersome and time-consuming, which seriously affects the operation and maintenance efficiency of the gas turbine. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a ventilation duct arrangement structure for a gas turbine casing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a ventilation duct arrangement structure for a gas turbine casing, comprising a casing body, a first duct, a second duct, and an annular plate. A filter screen is fixedly installed inside the annular plate. Connecting plates are symmetrically fixedly installed on the outer wall of the annular plate. Insert blocks are fixedly installed at the bottom of the connecting plates. Fixed sleeves are symmetrically fixedly installed on the top outer wall of the first duct. Limiting holes are formed through one side of the fixed sleeve and the insert block. A fixed rod is fixedly installed on the top outer wall of the first duct. A limiting block is fixedly installed at the end of the fixed rod away from the first duct. A sliding plate is slidably connected to the outer wall of the fixed rod. Limiting insert rods are symmetrically fixedly installed on the side of the sliding plate away from the limiting block. A spring is sleeved on the outer wall of the fixed rod. A handle is fixedly installed on the side of the sliding plate away from the limiting insert rod.

[0006] Preferably, the limiting rod and the limiting hole are slidably connected. This slidable connection ensures that the limiting rod can smoothly insert into or disengage from the limiting hole, enabling quick installation and removal of the filter and preventing jamming that could affect maintenance efficiency.

[0007] Preferably, the insert block and the fixing sleeve are slidably connected. Here, the slidable connection provides precise positioning guidance for the annular plate, quickly completing the initial installation and preventing the filter screen from shifting and creating filtration dead angles.

[0008] Preferably, one end of the spring is fixedly connected to the sliding plate, and the other end of the spring is fixedly connected to the limiting block. Here, the limiting rod is automatically locked using the spring's restoring force, eliminating the need for manual fixing. Disassembly is achieved by compressing the spring, simplifying the operation.

[0009] Preferably, an annular groove is formed at the top of the first pipe, and a sealing gasket is slidably connected inside the annular groove. A pressure ring is fixedly installed at the bottom of the annular plate, and the pressure ring is slidably connected to the annular groove. Here, the pressure ring compresses the sealing gasket to form a tight seal, preventing unfiltered air from seeping in, avoiding airflow leakage, and ensuring filtration and ventilation effects.

[0010] Preferably, both pipe one and pipe two are fixedly connected to the housing body. This fixed connection improves the stability of pipe one and pipe two in use.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] This invention utilizes a combination of insert blocks, fixing sleeves, limiting rods, and springs to achieve tool-free, rapid installation and removal of the filter screen. During installation, the operator simply inserts the insert block of the annular plate into the fixing sleeve, releases the pre-pulled handle, and the spring returns to its original position, automatically inserting the limiting rod into the limiting hole to complete the locking. During disassembly, simply pull the handle to disengage the limiting rod from the limiting hole, and the annular plate can be lifted directly to remove the filter screen. The entire process requires no specialized tools, simplifying the operation and allowing a single person to complete it. Compared to traditional bolt fixing methods, this invention improves the efficiency of filter screen replacement and maintenance, effectively reduces downtime of gas turbines due to filter screen maintenance, significantly enhances operational efficiency, and reduces the risk of industrial production interruptions. Attached Figure Description

[0013] Figure 1 This utility model provides an overall structural diagram of a gas turbine casing ventilation duct arrangement structure;

[0014] Figure 2 This utility model provides a partial structural diagram of a ventilation duct arrangement structure for a gas turbine casing;

[0015] Figure 3 This utility model provides a partial exploded view of the ventilation duct arrangement structure of a gas turbine casing;

[0016] Figure 4 This utility model proposes a ventilation duct arrangement structure for a gas turbine casing. Figure 3 Enlarged view of point A in the middle.

[0017] Legend: 1. Cover body; 2. Pipe 1; 3. Pipe 2; 4. Annular plate; 5. Filter screen; 6. Connecting plate; 7. Insert block; 8. Fixing sleeve; 9. Limiting hole; 10. Fixing rod; 11. Limiting block; 12. Sliding plate; 13. Limiting insert rod; 14. Spring; 15. Pull handle; 16. Annular groove; 17. Sealing gasket; 18. Pressure ring. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Please see Figures 1-4 This utility model provides a technical solution: a ventilation duct arrangement structure for a gas turbine casing, including a casing body 1, a first duct 2, a second duct 3, and an annular plate 4. A filter screen 5 is fixedly installed inside the annular plate 4. A connecting plate 6 is symmetrically fixedly installed on the outer wall of the annular plate 4. An insert block 7 is fixedly installed at the bottom of the connecting plate 6. A fixing sleeve 8 is symmetrically fixedly installed on the top outer wall of the first duct. A limiting hole 9 is opened through one side of the fixing sleeve 8 and the insert block 7. A fixing rod 10 is fixedly installed on the top outer wall of the first duct. A limiting block 11 is fixedly installed at the end of the fixing rod 10 away from the first duct. A sliding plate 12 is slidably connected to the outer wall of the fixing rod 10. A limiting insert rod 13 is symmetrically fixedly installed on the side of the sliding plate 12 away from the limiting block 11. A spring 14 is sleeved on the outer wall of the fixing rod 10. A handle 15 is fixedly installed on the side of the sliding plate 12 away from the limiting insert rod 13.

[0021] like Figure 2 and Figure 4 As shown, the limiting rod 13 is slidably connected to the limiting hole 9. The sliding connection ensures that the limiting rod 13 can be smoothly inserted into or removed from the limiting hole 9, enabling quick installation and removal of the filter screen 5 and avoiding jamming that affects maintenance efficiency.

[0022] like Figure 2-4 As shown, the insert 7 and the fixing sleeve 8 are slidably connected. The sliding connection provides precise positioning guidance for the annular plate 4, quickly completing the initial installation and preventing the filter screen 5 from shifting and creating a filtration dead angle.

[0023] like Figure 4As shown, one end of the spring 14 is fixedly connected to the sliding plate 12, and the other end of the spring 14 is fixedly connected to the limiting block 11. The limiting rod 13 is automatically locked by the restoring force of the spring 14, without the need for manual fixing. When disassembling, the spring 14 can be compressed to unlock, simplifying the operation.

[0024] like Figure 2-4 As shown, an annular groove 16 is opened at the top of the pipe 12, and a sealing gasket 17 is slidably connected inside the annular groove 16. A pressure ring 18 is fixedly installed at the bottom of the annular plate 4. The pressure ring 18 is slidably connected to the annular groove 16. The pressure ring 18 squeezes the sealing gasket 17 to form a tight seal, preventing unfiltered air from seeping in, avoiding airflow leakage, and ensuring filtration and ventilation effects.

[0025] like Figure 1 As shown, pipe 1 (2) and pipe 2 (3) are both fixedly connected to the casing body 1, which improves the stability of pipe 1 (2) and pipe 2 (3) in use.

[0026] The working principle of this embodiment is as follows: When installing the filter screen 5, the operator can quickly assemble it manually without the need for additional tools. First, align the annular plate 4 (with the filter screen 5 fixed inside) with the top opening of the pipe 2, so that the pressure ring 18 at the bottom of the annular plate 4 is precisely aligned with the annular groove 16 at the top of the pipe 2. At the same time, insert the insert block 7 at the bottom of the connecting plate 6 on the outer wall of the annular plate 4 vertically into the fixing sleeve 8 symmetrically arranged on the top outer wall of the pipe 2. During this process, the sliding cooperation between the insert block 7 and the fixing sleeve 8 can achieve the initial positioning of the annular plate 4, ensuring that the filter screen 5 can accurately cover the ventilation channel of the pipe 2 and avoid dead corners due to installation misalignment. Then, the operator releases the handle 15 that was previously pulled outward (the handle 15 needs to be pulled before installation to drive the sliding plate 12 along the fixing rod 10 towards the limiting block). When sliding in direction 11, the sliding plate 12 compresses the spring 14 sleeved on the outer wall of the fixed rod 10. The spring 14 is in a stored state. At the same time, the limiting rod 13 on one side of the sliding plate 12 moves with the sliding plate 12 (misaligned with the limiting hole 9 on the fixed sleeve 8). After releasing the pull handle 15, the stored spring 14 will generate a restoring force, pushing the sliding plate 12 to slide away from the limiting block 11 along the fixed rod 10 until the limiting rod 13 on the sliding plate 12 is precisely inserted into the limiting hole 9 through which the fixed sleeve 8 and the plug 7 pass. Since the limiting rod 13 and the limiting hole 9 are slidably connected, and the plug 7 has been stably inserted into the fixed sleeve 8, the limiting rod 13 can form a radial limit on the plug 7 through the limiting hole 9, preventing the plug 7 from detaching from the fixed sleeve 8. Finally, the annular plate 4 and the pipe 2 are quickly locked together, and the filter screen 5 is installed. Meanwhile, during installation, the pressure ring 18 at the bottom of the annular plate 4 is simultaneously embedded into the annular groove 16 of the pipe 1 2, exerting a downward squeezing force on the sealing gasket 17 pre-placed in the annular groove 16. The sealing gasket 17 undergoes slight deformation under the pressure of the pressure ring 18, tightly adhering to the inner wall of the annular groove 16 and the outer wall of the pressure ring 18, thereby filling the gap between the annular plate 4 and the pipe 1 2, forming a sealing barrier, and ensuring the sealing performance of the subsequent ventilation process. In use, outside air enters through the pipe 1 2, first passing through the filter screen 5 inside the annular plate 4. The filter screen 5 effectively intercepts dust, impurities, and other pollutants in the air, preventing them from entering the casing body 1 and adhering to the precision components of the gas turbine. The filtered clean air enters the casing body 1, cooling the gas turbine and maintaining the internal air pressure balance. Subsequently, the air carrying heat is discharged through the second pipe 3, completing one ventilation cycle.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A ventilation duct arrangement structure for a gas turbine casing, comprising a casing body (1), duct one (2), duct two (3), and an annular plate (4), characterized in that: A filter screen (5) is fixedly installed inside the annular plate (4). A connecting plate (6) is symmetrically fixedly installed on the outer wall of the annular plate (4). A plug (7) is fixedly installed at the bottom of the connecting plate (6). A fixing sleeve (8) is symmetrically fixedly installed on the top outer wall of the pipe (2). A limiting hole (9) is opened through one side of the fixing sleeve (8) and the plug (7). A fixing rod (10) is fixedly installed on the top outer wall of the pipe (2). A limiting block (11) is fixedly installed at the end of the fixing rod (10) away from the pipe (2). A sliding plate (12) is slidably connected to the outer wall of the fixing rod (10). A limiting plug (13) is symmetrically fixedly installed on the side of the sliding plate (12) away from the limiting block (11). A spring (14) is sleeved on the outer wall of the fixing rod (10). A handle (15) is fixedly installed on the side of the sliding plate (12) away from the limiting plug (13).

2. The gas turbine casing ventilation duct arrangement structure according to claim 1, characterized in that: The limiting rod (13) is slidably connected to the limiting hole (9).

3. The ventilation duct arrangement structure for a gas turbine casing according to claim 1, characterized in that: The insert (7) and the fixing sleeve (8) are slidably connected.

4. The ventilation duct arrangement structure for a gas turbine casing according to claim 1, characterized in that: One end of the spring (14) is fixedly connected to the sliding plate (12), and the other end of the spring (14) is fixedly connected to the limiting block (11).

5. The gas turbine casing ventilation duct arrangement structure according to claim 1, characterized in that: An annular groove (16) is opened at the top of the pipe (2), and a sealing gasket (17) is slidably connected inside the annular groove (16). A pressure ring (18) is fixedly installed at the bottom of the annular plate (4), and the pressure ring (18) is slidably connected to the annular groove (16).

6. The gas turbine casing ventilation duct arrangement structure according to claim 1, characterized in that: Both pipe one (2) and pipe two (3) are fixedly connected to the cover body (1).

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