Combined type carbon ring sealing device for fan
By employing a composite carbon ring sealing device in the fan, the axial fixing problem of traditional fan sealing devices is solved by utilizing the sealing groove, carbon ring plate, and locking block structure. This achieves a stable connection between the upper and lower pressure shells, improves the sealing effect and service life, and reduces maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional fan sealing devices lack a simple and reliable axial fixing method, making it difficult to quickly fix the upper and lower pressure shells during installation and use. They are also prone to relative displacement due to vibration and airflow impact, affecting the sealing effect and shortening the service life.
A composite carbon ring sealing device is adopted. By setting sealing grooves and carbon ring plates on the inner walls of the upper and lower pressure shells, and using the mounting plate and locking block structure, the axial initial fixation and stable connection of the upper and lower pressure shells are achieved. Combined with the helical spring, pre-tightening force and elastic locking are provided to ensure the stability of the sealing components.
It achieves a quick and reliable connection between the upper and lower pressure shells, prevents relative displacement, improves the sealing effect, extends the service life of the sealing device, and reduces maintenance costs and operational risks.
Smart Images
Figure CN224064562U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind turbine technology, specifically to a composite carbon ring sealing device for wind turbines. Background Technology
[0002] During the operation of a fan, the sealing device plays a crucial role, effectively preventing gas leakage inside the fan and ensuring its normal and efficient operation. Currently, the connection and fixing methods of the upper and lower pressure shells in the commonly used carbon ring sealing devices for fans have certain limitations.
[0003] Traditional sealing devices often lack a simple and reliable axial fixing method for securing the upper and lower pressure shells. This makes it difficult to quickly and accurately achieve initial axial fixation during installation and use, affecting installation efficiency. Furthermore, during prolonged operation of the fan, factors such as vibration and airflow impact can easily cause relative displacement between the upper and lower pressure shells. This not only reduces the sealing effect and leads to gas leakage but may also accelerate the wear of sealing components, shorten the service life of the sealing device, and increase equipment maintenance costs and operational risks. Utility Model Content
[0004] The purpose of this utility model is to provide a composite carbon ring sealing device for fans, which solves the technical problem that traditional sealing devices often lack a simple and reliable axial fixing method when fixing the upper and lower pressure shells, and achieves the purpose of fixing the upper and lower pressure shells by snap-fitting.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite carbon ring sealing device for a fan, comprising a fan housing and a main shaft, wherein the main shaft is movably sleeved inside the fan housing, and a sealing assembly is provided on the outside of the main shaft, the sealing assembly comprising: a sealing component disposed on the outer wall of the main shaft; and fixing components disposed on both sides of the sealing component.
[0006] Preferably, the sealing component includes: a bushing disposed on the outer wall of the main shaft; and a carbon ring sealing seat plate fixedly installed on one side of the fan housing.
[0007] Preferably, the outer wall of the bushing is provided with an upper pressure shell and a lower pressure shell, and the inner walls of the upper pressure shell and the lower pressure shell are provided with sealing grooves at equal intervals. Carbon ring plates are provided on the upper pressure shell and the lower pressure shell through the sealing grooves. A helical spring is provided on one side of the carbon ring plate. An air inlet is provided on the top of the upper pressure shell and an air outlet is provided on the bottom of the lower pressure shell. One side of the upper pressure shell and the lower pressure shell is connected to the carbon ring sealing seat plate by bolts.
[0008] The sealing grooves equidistantly opened on the inner walls of the upper and lower pressure shells provide a precise installation position for the carbon ring plates.
[0009] Preferably, the fixing components include: mounting plate one, which is symmetrically fixedly installed on both sides of the outer wall of the upper pressure shell; and mounting plate two, which is symmetrically fixedly installed on both sides of the outer wall of the lower pressure shell.
[0010] Preferably, the first mounting plate has a locking slot 1 inside, and the second mounting plate has a locking slot 2 inside. The locking slot 1 and the locking slot 2 are connected. A connecting vertical rod is symmetrically fixedly installed on the top of the first mounting plate. A fixed top plate is fixedly installed on the top of the connecting vertical rod. A movable plate is slidably connected to the outer wall of the connecting vertical rod. A spring 1 is sleeved on the outer wall of the connecting vertical rod. One end of the spring 1 is fixedly connected to the fixed top plate, and the other end of the spring 1 is fixedly connected to the movable plate. A locking block 1 is fixedly installed between the movable plates. The locking block 1 is locked and connected to the first mounting plate and the second mounting plate through the locking slot 1 and the locking slot 2, respectively.
[0011] The first locking slot of mounting plate one and the second locking slot of mounting plate two are connected, and together with the first locking block, they provide a quick and easy installation method.
[0012] Preferably, the first locking block has movable grooves on both sides, a guide rod is fixedly installed inside the movable groove, and a second locking block is slidably connected to the outer wall of the guide rod. A locking frame is symmetrically fixedly installed at the bottom of the second mounting plate, and the second locking block is locked to the locking frame. A second spring is sleeved on the outer wall of the guide rod, one end of the second spring is fixedly connected to the second locking block, and the other end of the second spring is fixedly connected to the first locking block. A sliding opening is symmetrically opened at the bottom of the first locking block, and a paddle is fixedly installed at the bottom of the second locking block. The bottom of the paddle moves through the sliding opening and is slidably connected to the first locking block through the sliding opening.
[0013] After the first locking block is initially engaged with the first and second mounting plates, the second locking block pops out under the elastic force of the second spring and engages with the locking frame at the bottom of the second mounting plate. This secondary locking structure provides additional reinforcement for the connection between the upper and lower pressure shells.
[0014] This utility model provides a composite carbon ring sealing device for fans. It has the following advantages:
[0015] (1) This utility model is fixed on the upper and lower pressure shells by mounting plate one and mounting plate two respectively, and the locking port one and locking port two are connected. The connecting vertical rod connects the fixed top plate and the movable plate. Spring one provides downward elastic force, so that the movable plate drives the locking block one to lock into locking port one and locking port two, thereby achieving the effect of initial axial fixation of the upper and lower pressure shells.
[0016] (2) In this utility model, the second locking block is slidably connected to the guide rod in the movable groove on both sides of the locking block one. The second spring provides outward elastic force. When the first locking block is locked in place, the second locking block pops outward under the action of the second spring and locks with the locking frame at the bottom of the mounting plate two, which further strengthens the stability of the connection between the upper pressure shell and the lower pressure shell and achieves the effect of preventing relative displacement between them during operation. Attached Figure Description
[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;
[0019] Figure 3 This is a cross-sectional view of the sealing component structure of this utility model;
[0020] Figure 4 This is a cross-sectional view of the fixing component structure of this utility model.
[0021] In the diagram: 1. Fan housing, 2. Main shaft, 3. Sealing assembly;
[0022] 31 Sealing component, 311 Bushing, 312 Upper pressure shell, 313 Lower pressure shell, 314 Carbon ring plate, 315 Carbon ring sealing seat plate, 316 Bolt, 317 Helical spring, 318 Air inlet, 319 Air outlet;
[0023] 32 Fixed component, 321 Mounting plate one, 322 Mounting plate two, 323 Clamping frame, 324 Connecting vertical rod, 325 Fixed top plate, 326 Movable plate, 327 Spring one, 328 Clamping block one, 329 Guide rod, 3211 Clamping block two, 3212 Spring two, 3213 Paddle. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Example
[0026] Addressing the problem that traditional sealing devices often lack a simple and reliable axial fixing method for securing the upper and lower pressure shells, this invention provides a preferred embodiment of a composite carbon ring sealing device for fans, for example... Figure 1-4 As shown: A composite carbon ring sealing device for a fan includes a fan housing 1 and a main shaft 2. The main shaft 2 is movably sleeved inside the fan housing 1. A sealing assembly 3 is provided on the outside of the main shaft 2. The sealing assembly 3 includes: a sealing component 31 disposed on the outer wall of the main shaft 2; and fixing components 32 respectively disposed on both sides of the sealing component 31. The sealing component 31 includes: a bushing 311 disposed on the outer wall of the main shaft 2; and a carbon ring sealing seat plate 315 fixedly installed on one side of the fan housing 1. The outer wall of the bushing 311... An upper pressure shell 312 and a lower pressure shell 313 are respectively provided. Sealing grooves are equally spaced on the inner walls of the upper pressure shell 312 and the lower pressure shell 313. Carbon ring plates 314 are provided in the upper pressure shell 312 and the lower pressure shell 313 through the sealing grooves. A helical spring 317 is provided on one side of the carbon ring plate 314. An air inlet 318 is provided on the top of the upper pressure shell 312 and an air outlet 319 is provided on the bottom of the lower pressure shell 313. One side of the upper pressure shell 312 and the lower pressure shell 313 is connected to the carbon ring sealing seat plate 315 by bolts 316.
[0027] Furthermore, in this embodiment, a bushing 311 is fitted onto the outer wall of the main shaft 2. The upper pressure shell 312 and the lower pressure shell 313 are connected by bolts 316 and a carbon ring sealing seat plate 315. The carbon ring sealing seat plate 315 is fixed to one side of the blower housing 1. In the fixing component 32, mounting plate one 321 is on both sides of the outer wall of the upper pressure shell 312, and mounting plate two 322 is on both sides of the outer wall of the lower pressure shell 313. They are connected and fixed to the sealing component 31 through a specific structure. When the blower is running, the main shaft 2 drives the bushing 311 to rotate together, compressing the gas. The gas enters through the inlet 318 and flows through the carbon ring 314. Since the carbon ring 314 is located in the sealing groove of the inner wall of the upper pressure shell 312 and the lower pressure shell 313, and a coil spring 317 provides pre-tightening force on one side, the carbon ring 314 is tightly attached to the outer wall of the bushing 311. When the gas passes through the tiny gap between the carbon ring 314 and the bushing 311, it is throttled and the pressure gradually decreases. Finally, it is discharged from the outlet 319, thereby effectively preventing the gas inside the fan from leaking along the gap between the main shaft 2 and the fan housing 1, and achieving the sealing function. Example
[0028] Based on Embodiment 1, a preferred embodiment of the composite carbon ring sealing device for fans provided by this utility model is, for example... Figure 1-4As shown: The fixing component 32 includes: a first mounting plate 321, symmetrically fixedly installed on both sides of the outer wall of the upper pressure shell 312; a second mounting plate 322, symmetrically fixedly installed on both sides of the outer wall of the lower pressure shell 313; the first mounting plate 321 has a first locking opening inside, and the second mounting plate 322 has a second locking opening inside, the first locking opening and the second locking opening are connected; a connecting vertical rod 324 is symmetrically fixedly installed on the top of the first mounting plate 321, a fixed top plate 325 is fixedly installed on the top of the connecting vertical rod 324, a movable plate 326 is slidably connected to the outer wall of the connecting vertical rod 324, a spring 327 is sleeved on the outer wall of the connecting vertical rod 324, one end of the spring 327 is fixedly connected to the fixed top plate 325, and the other end of the spring 327 is fixedly connected to the movable plate 326; a locking block 328 is fixedly installed between the movable plates 326, and the locking block 328 is connected by a locking mechanism. The first and second locking joints are respectively locked to the first mounting plate 321 and the second mounting plate 322. The first locking block 328 has movable grooves on both sides. The guide rod 329 is fixedly installed inside the movable groove. The second locking block 3211 is slidably connected to the outer wall of the guide rod 329. The bottom of the second mounting plate 322 is symmetrically fixedly installed with locking frames 323. The second locking block 3211 is locked to the locking frame 323. The outer wall of the guide rod 329 is fitted with a second spring 3212. One end of the second spring 3212 is fixedly connected to the second locking block 3211. The other end of the second spring 3212 is fixedly connected to the first locking block 328. The bottom of the first locking block 328 has symmetrical sliding openings. The bottom of the second locking block 3211 is fixedly installed with a paddle 3213. The bottom of the paddle 3213 moves through the sliding opening and is slidably connected to the first locking block 328 through the sliding opening.
[0029] Furthermore, in this embodiment, mounting plate 321 and mounting plate 322 are respectively fixed to the upper and lower pressure shells. The first and second locking slots are connected. A connecting vertical rod 324 connects and fixes the top plate 325 and the movable plate 326. Spring 327 provides downward elastic force, causing the movable plate 326 to drive locking block 328 downwards into locking slots 1 and 2, achieving initial axial fixation of the upper pressure shell 312 and the lower pressure shell 313. Locking block 3211 is slidably connected to the guide rod 329 in the movable grooves on both sides of locking block 328. Spring 3212 provides outward elastic force. When locking block 328 is engaged, locking block 3211 pops outwards under the action of spring 3212 and engages with the locking frame 323 at the bottom of mounting plate 322, further strengthening the stability of the connection between the upper pressure shell 312 and the lower pressure shell 313 and preventing relative displacement during operation.
[0030] In use, a main shaft 2 is movably fitted inside the fan housing 1. A sealing assembly 3 is installed on the outer wall of the main shaft 2. The sealing assembly 3 consists of a sealing component 31 and a fixing component 32. A bushing 311 is fitted onto the outer wall of the main shaft 2. The upper pressure shell 312 and the lower pressure shell 313 are connected by bolts 316 and a carbon ring sealing seat plate 315. The carbon ring sealing seat plate 315 is fixed to one side of the fan housing 1. In the fixing component 32, mounting plate one 321 is on both sides of the outer wall of the upper pressure shell 312, and mounting plate two 322 is on both sides of the outer wall of the lower pressure shell 313. They are connected and fixed to the sealing component 31 by a specific structure. When the fan is running, the main shaft 2 drives the bushing 311. 11 rotate together, and compressed gas enters from the inlet 318 and flows through the carbon ring 314. Since the carbon ring 314 is set in the sealing groove of the inner wall of the upper pressure shell 312 and the lower pressure shell 313, and a coil spring 317 provides preload on one side, the carbon ring 314 is tightly attached to the outer wall of the bushing 311. When the gas passes through the tiny gap between the carbon ring 314 and the bushing 311, it is throttled, and the pressure gradually decreases. Finally, it is discharged from the outlet 319, thereby effectively preventing the gas inside the fan from leaking along the gap between the main shaft 2 and the fan housing 1, and achieving the sealing function. Mounting plate 1 321 and mounting plate 2 322 are respectively fixed on the upper and lower... On the pressure shell, locking slot one and locking slot two are connected. Connecting vertical rod 324 connects fixed top plate 325 and movable plate 326. Spring one 327 provides downward elastic force, causing movable plate 326 to drive locking block one 328 downward into locking slot one and locking slot two, achieving initial axial fixation of upper pressure shell 312 and lower pressure shell 313. Locking block two 3211 is slidably connected to guide rod 329 in movable grooves on both sides of locking block one 328. Spring two 3212 provides outward elastic force. When locking block one 328 is locked in place, locking block two 3211 pops outward under the action of spring two 3212, and engages with the bottom of mounting plate two 322. The locking frame 323 of the part engages, further strengthening the stability of the connection between the upper pressure shell 312 and the lower pressure shell 313, preventing relative displacement between them during operation. When disassembly is required, the lever 3213 is moved to slide within the sliding port, causing the locking block 3211 to move inward against the elastic force of the spring 3212, disengaging from the locking frame 323. At the same time, the spring 327 rebounds, causing the movable plate 326 to move upward, so that the locking block 328 disengages from the locking port 1 and locking port 2. This allows the fixed part 32 to disassemble the sealing part 31, facilitating the inspection and maintenance of the sealing device.
[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A combined carbon ring seal for a fan comprising a fan housing (1), a main shaft (2), characterized in that: The main shaft (2) movably sleeves in the fan shell (1), and the outer part of the main shaft (2) is provided with a sealing assembly (3), which comprises: A sealing part (31) is arranged on the outer wall of the main shaft (2); A fixing part (32) is arranged on both sides of the sealing part (31).
2. A combined carbon ring sealing device for a fan according to claim 1, characterized in that: The sealing part (31) comprises: A shaft sleeve (311) is arranged on the outer wall of the main shaft (2); A carbon ring sealing seat plate (315) is fixedly installed on one side of the fan shell (1).
3. The combined carbon ring sealing device for a fan according to claim 2, characterized in that: The outer wall of the shaft sleeve (311) is respectively provided with an upper pressing shell (312) and a lower pressing shell (313), the inner walls of the upper pressing shell (312) and the lower pressing shell (313) are equidistantly provided with sealing grooves, the upper pressing shell (312) and the lower pressing shell (313) are provided with carbon ring pieces (314) through the sealing grooves, one side of the carbon ring piece (314) is provided with a spiral spring (317), the top of the upper pressing shell (312) is provided with an air inlet (318), the bottom of the lower pressing shell (313) is provided with an air outlet (319), and one side of the upper pressing shell (312) and the lower pressing shell (313) is connected with the carbon ring sealing seat plate (315) through a bolt (316).
4. The combined carbon ring sealing device for a fan according to claim 1, characterized in that: The fixing part (32) comprises: An installation plate one (321) is symmetrically fixedly installed on the outer wall of the upper pressing shell (312); An installation plate two (322) is symmetrically fixedly installed on the outer wall of the lower pressing shell (313).
5. A combined carbon ring sealing device for a fan as claimed in claim 4, characterized in that: The inner part of the installation plate one (321) is provided with a clamping opening one, the inner part of the installation plate two (322) is provided with a clamping opening two, the clamping opening one and the clamping opening two are in communication, the top of the installation plate one (321) is symmetrically fixedly installed with a connecting vertical rod (324), the top end of the connecting vertical rod (324) is fixedly installed with a fixed top plate (325), the outer wall of the connecting vertical rod (324) is slidably connected with a movable plate (326), the outer wall of the connecting vertical rod (324) is sleeved with a spring one (327), one end of the spring one (327) is fixedly connected with the fixed top plate (325), the other end of the spring one (327) is fixedly connected with the movable plate (326), the movable plate (326) is fixedly installed with a clamping block one (328), and the clamping block one (328) is clamped and connected with the installation plate one (321) and the installation plate two (322) through the clamping opening one and the clamping opening two respectively.
6. A combined carbon ring sealing device for a fan as claimed in claim 5, characterized in that: The two sides of the engaging block one (328) are respectively provided with movable grooves, the inside of the movable grooves is fixedly installed with guide rods (329), the outer wall of the guide rod (329) is slidably connected with engaging block two (3211), the bottom of the second mounting plate (322) is fixedly installed with engaging frames (323) in a symmetrical manner, the engaging block two (3211) is hingedly connected with the engaging frames (323), the outer wall of the guide rod (329) is sleeved with spring two (3212), one end of the spring two (3212) is fixedly connected with the engaging block two (3211), the other end of the spring two (3212) is fixedly connected with the engaging block one (328), the bottom of the engaging block one (328) is symmetrically provided with sliding openings, the bottom of the engaging block two (3211) is fixedly installed with a push piece (3213), the bottom of the push piece (3213) movably penetrates through the sliding openings and is slidably connected with the engaging block one (328) through the sliding openings.