Gland-type water-lubricated thrust bearing for water-cooled submersible motor for well
By setting up a convex hull and limiting columns on the bottom surface of the sector bearing slide and fixing it with the limit hole or screws of the gland, the problem of the sector bearing slide easily falling off in the submersible motor for water-cooled wells is solved, and the effect of stable swaying and preventing falling off is achieved, improving the safety and installation convenience of the motor.
Patent Information
- Application Number
- CN202422380979.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-28
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-28
AI Technical Summary
The fan-shaped bearing slides of existing submersible motors for water-cooled wells move freely on the bearing seat, which easily leads to motor failure and may turn and fall off, causing installation trouble.
Set up a convex hull and a symmetrically distributed limit column in the middle of the bottom surface of the sector bearing slide. Combined with the design of the gland, it is fixed by a limit hole and snap or screw to ensure that the sector bearing slide sways with the convex hull as the center and covers its flaps to prevent falling off.
The sway adjustment function of the sector bearing slider is realized to prevent falling off, the structure is simple, the installation is convenient and the cost is low, and the safety and stability of the motor is improved.
Smart Images
Figure CN223156843U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a gland type water lubricated thrust bearing for a water-cooled submersible motor for well use. Background Art
[0002] In the prior art, a thrust bearing for a water-filled submersible motor for well use includes a thrust disk fixed on a rotor shaft and a bearing seat assembly fixed on a stator. The bearing seat assembly includes a bearing seat and a plurality of movable sector bearing sliders evenly distributed and installed on the bearing seat. The bottom surface of the sector bearing slider has a convex bulge in the middle and limiting columns symmetrically distributed on both sides of the convex bulge. The upper end surface of the bearing seat has mounting holes matching the limiting columns. When the sector bearing slider is installed therein, the convex bulge is in supporting contact with the upper plane of the bearing seat, and the sector bearing slider can swing and support with the convex bulge as the center. The swing of the sector bearing slider can automatically adjust to achieve the maximum area to support the thrust disk, improve the axial thrust and extend the product life. However, the sector bearing slider of this structure is only placed on the bearing seat to move freely, and the excessive freedom is likely to cause displacement and damage the motor. It will also fall off when flipping, causing trouble in production and installation. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a gland type water lubricated thrust bearing for a water-cooled submersible motor for well use, which has a simple structure, can prevent the sector bearing slider from flipping and falling off, and can keep the sector bearing slider with a swing adjustment function and safety and stability.
[0004] To solve the above technical problem, the technical solution of the gland type water lubricated thrust bearing for a water-cooled submersible motor for well use of the utility model is: it includes a thrust disk fixed on a rotor shaft and a bearing seat assembly fixed on a stator. The bearing seat assembly includes a bearing seat and a plurality of movable sector bearing sliders evenly distributed and installed on the bearing seat. The bottom surface of the sector bearing slider has a convex bulge in the middle and limiting columns symmetrically distributed on both sides of the convex bulge. The upper end surface of the bearing seat has mounting holes with clearance fit matching the limiting columns. The height of the limiting columns is less than the depth of the mounting holes. When the sector bearing slider is installed therein, the convex bulge is in supporting contact with the upper plane of the bearing seat, and the sector bearing slider can swing and support with the convex bulge as the center. The feature is that: the bearing seat assembly further includes a gland, which is fixedly installed on the upper end surface of the bearing seat and exposes the sliding plane of the sector bearing slider. The two sides of the sector bearing slider have symmetrically arranged wing pieces, and the wing pieces are covered by the gland but have a certain moving distance.
[0005] As one of the preferred technical solutions of the present utility model, the gland is in a cylindrical shape and sleeved on the outer circle of the bearing seat. The upper end face thereof has a limit hole that can expose the sliding plane of the sector bearing slider and cover the wing. The central position surrounded by the limit hole has a downwardly protruding concave pool, the bottom surface of which is supported by the bearing seat. The height of the downward protrusion of the concave pool is less than the installation height of the sector bearing slider on the bearing seat and greater than the installation height of the wing. The lower end of the gland also has an inwardly protruding buckle, and correspondingly, there is a concave hole on the edge of the lower end face of the bearing seat that is clamped by the buckle to fix the gland.
[0006] As the second preferred technical solution of the present utility model, the gland is in a disc shape and installed on the upper end face of the bearing seat. The position where the periphery of the disc overlaps with the sector bearing slider has a U-shaped notch, and this U-shaped notch is for exposing the sliding plane of the sector bearing slider and covering the wing. There is also a downwardly protruding counterbore on the disc plane between the two U-shaped notches. The center of the counterbore has a screw hole. The height of the downward protrusion of the counterbore is less than the installation height of the sector bearing slider on the bearing seat and greater than the installation height of the wing. Correspondingly, there is a screw hole on the upper end face of the bearing seat that matches the position of the screw hole, and the gland is fixed on the bearing seat by a fixing screw.
[0007] Beneficial effects
[0008] For the gland type water lubricated thrust bearing of the water-cooled submersible motor for well use of the present utility model, since the original sector bearing slider is improved to have wings that are symmetric to each other on both sides, and a gland is used to fix on the bearing seat to expose the sliding plane of the sector bearing slider and cover the wings. The sector bearing slider can swing freely but will not fall off when the bearing seat is inverted. The gland can be formed by stamping a metal sheet, with a simple structure, safety and stability, easy installation, and low cost. Therefore, it has the beneficial effects of a simple structure, being able to prevent the sector bearing slider from flipping and falling off, and maintaining the swing adjustment function and safety and stability of the sector bearing slider. Description of the drawings
[0009] The following further describes the gland type water lubricated thrust bearing of the water-cooled submersible motor for well use of the present utility model in conjunction with the drawings.
[0010] Figure 1 is a structural cross-sectional view of the gland type water lubricated thrust bearing of the water-cooled submersible motor for well use of the present utility model.
[0011] Figure 2 is Figure 1 a cross-sectional view of the bearing seat assembly in
[0012] Figure 3 is Figure 2 the top view of
[0013] Figure 4 isFigure 3 Cross-sectional view taken along the A-A direction.
[0014] Figure 5 is Figure 2 Exploded view.
[0015] Figure 6 is Figure 2 Stereogram.
[0016] Figure 7 is Figure 1 Front view of the bearing housing in the structure.
[0017] Figure 8 is Figure 7 Cross-sectional view taken along the B-B direction.
[0018] Figure 9 is Figure 7 Stereoscopic view.
[0019] Figure 10 Front view of the sector bearing slider in the gland type water-lubricated thrust bearing for the water-cooled submersible motor for well use of the present utility model.
[0020] Figure 11 is Figure 10 Bottom view.
[0021] Figure 12 is Figure 10 Cross-sectional view taken along the C-C direction.
[0022] Figure 13 is Figure 10 Stereoscopic view.
[0023] Figure 14 is Figure 1 Front view of the gland in the structure.
[0024] Figure 15 is Figure 14 Cross-sectional view taken along the D-D direction.
[0025] Figure 16 is Figure 14 Rear view.
[0026] Figure 17 is Figure 14 Stereoscopic view.
[0027] Figure 18 Another cross-sectional view of the gland type water-lubricated thrust bearing for the water-cooled submersible motor for well use of the present utility model.
[0028] Figure 19 is Figure 18 Front view of the bearing housing assembly in.
[0029] Figure 20 isFigure 19 Cross-sectional view in the E-E direction.
[0030] Figure 21 is Figure 19 Cross-sectional view in the F-F direction.
[0031] Figure 22 is Figure 19 Exploded view.
[0032] Figure 23 is Figure 19 Stereoscopic view.
[0033] Figure 24 is Figure 19 Front view of the bearing housing in
[0034] Figure 25 is Figure 19 Front view of the gland in
[0035] Figure 26 is Figure 25 Cross-sectional view in the G-G direction in
[0036] Figure 27 is Figure 25 Stereoscopic view in Specific implementation manner
[0037] Consists of Figure 1 and 18 As shown, the implementation manner of the gland type water lubricated thrust bearing for the water cooled submersible motor for well use of the present utility model is: it includes a thrust disk 1 fixed on the rotor shaft and a bearing housing assembly 2 fixed on the stator. As Figures 2 - 6 , shown in Figures 19 - 23, the bearing housing assembly 2 includes a bearing housing 21 and a number of movable sector bearing sliders 22 evenly distributed and installed on the bearing housing. As Figures 10 - 13 shown, the middle of the bottom surface of the sector bearing slider 22 has a convex boss 221 and limit posts 222 symmetrically distributed on both sides of the convex boss. As Figures 7 - 9 , shown in Figure 24, the upper end surface of the bearing housing 21 has mounting holes 211 with clearance fit for the limit posts 222. The height of the limit posts 222 is less than the depth of the mounting holes 211. When the sector bearing slider 22 is installed therein, the convex boss 221 is in supporting contact with the upper plane of the bearing housing 21, and the sector bearing slider 22 can swing in a supported manner with the convex boss 221 as the center. The bearing housing assembly 2 also includes a gland 23. As Figures 2 - 6 , shown in Figures 19 - 23, the gland is fixedly installed on the upper end surface of the bearing housing 21, and the sliding plane of the sector bearing slider 22 is exposed. As Figures 10 - 13As shown, on both sides of the sector bearing slider 22, there are symmetrically arranged fins 223. The fins are covered by the gland 23 but have a certain movement distance, which allows the sector bearing slider 22 to swing and prevents the sector bearing slider 22 from reversing and falling off. In this embodiment, by Figure 1 and 18 As shown, the thrust disk 1 is fixed to the end of the rotor shaft. The end plane thereof is matched with the sector bearing slider 22 of the bearing seat assembly 2 to form a friction pair, thus forming a thrust bearing. The gland 23 is formed by stamping a stainless steel plate and can be fixed to the bearing seat 21 by a self-locking buckle method or by screws. This structure is simple and convenient for installation.
[0038] By Figures 1 - 17 As shown, as one of the preferred embodiments of the present utility model, the gland 23 is in the shape of a cylinder and is sleeved on the outer circle of the bearing seat 21. The upper end surface thereof has a limiting hole 231 that can expose the sliding plane of the sector bearing slider 22 and cover the fin 223. At the central position surrounded by the limiting hole, there is a downwardly protruding concave pool 232. The bottom surface of the concave pool 232 is supported by the bearing seat 21. The height of the downward protrusion of the concave pool is less than the installation height of the sector bearing slider 22 on the bearing seat 21 and greater than the installation height of the fin 223. The lower end of the gland also has an inwardly protruding buckle 233, and correspondingly, on the edge of the lower end surface of the bearing seat 21, there is a concave hole 212 that is clamped by the buckle 233 to fix the gland. In this embodiment, the gland 23 can be formed by stamping a stainless steel plate. It relies on the concave pool 232 to fix the installation height, and in combination with the cooperation of the buckle 233 and the concave hole 212, the gland 23 is self-locked and fixed without moving or falling off. During installation, after installing the sector bearing slider 22, the gland 23 can be pressed in to achieve self-locking fixation. The structure is simple, and the installation is convenient, stable, and firm.
[0039] By Figures 18 - 27 As shown, as the second preferred embodiment of the present utility model, the gland 23 is in the shape of a disk and is installed on the upper end surface of the bearing seat 21. The position where the periphery of the disk overlaps with the sector bearing slider 22 has a U-shaped notch 234. The U-shaped notch exposes the sliding plane of the sector bearing slider 22 and covers the fin 223 to prevent the sector bearing slider 22 from falling off. On the disk plane between the two U-shaped notches, there is also a downwardly protruding counterbore 235. The center of the counterbore 235 has a screw hole 236. The height of the downward protrusion of the counterbore 235 is less than the installation height of the sector bearing slider 22 on the bearing seat 21 and greater than the installation height of the fin 223. Corresponding to the upper end surface of the bearing seat 21, there is a screw hole 213 that matches the position of the screw hole 236. The gland 23 is fixed to the bearing seat 21 by a fixing screw 24. In this embodiment, the gland 23 can be formed by stamping a stainless steel plate. It relies on the protruding height at the bottom of the counterbore 235 to fix the installation height and is fixed by the fixing screw 24. The structure is simple, and the installation is convenient, stable, and firm.
[0040] The above are only the preferred embodiments of the present utility model, which do not constitute a limitation to the protection scope of the present utility model. As long as the purpose of the present utility model is implemented by substantially the same means, it shall fall within the protection scope of the present utility model.
Claims
1. A gland type water lubricated thrust bearing for a water-cooled submersible motor for well use, comprising a thrust disk (1) fixed on a rotor shaft and a bearing seat assembly (2) fixed on a stator. The bearing seat assembly (2) includes a bearing seat (21) and a plurality of movable sector bearing sliders (22) evenly distributed and mounted on the bearing seat. A convex boss (221) is provided in the middle of the bottom surface of the sector bearing slider (22), and limit columns (222) are symmetrically distributed on both sides of the convex boss. An installation hole (211) with a clearance fit for the limit column (222) is provided on the upper end surface of the bearing seat (21). The height of the limit column (222) is less than the depth of the installation hole (211). When the sector bearing slider (22) is installed therein, the convex boss (221) is in supporting contact with the upper plane of the bearing seat (21), and the sector bearing slider (22) can swing in a supporting manner with the convex boss (221) as the center. It is characterized in that: The bearing seat assembly (2) further includes a gland (23) which is fixedly installed on the upper end face of the bearing seat (21) and exposes the sliding plane of the sector bearing slider (22). The two sides of the sector bearing slider (22) have symmetrically arranged fins (223), and the fins are covered by the gland (23) but have a certain movement distance.
2. The gland type water-lubricated thrust bearing for a water-cooled submersible motor for well use according to claim 1, wherein: The gland (23) is in a cylindrical shape and sleeved on the outer circumference of the bearing seat (21). The upper end face thereof has a limit hole (231) which can expose the sliding plane of the sector bearing slider (22) and cover the fins (223). The central position surrounded by the limit hole has a downwardly protruding concave pool (232). The bottom surface of the concave pool (232) is supported by the bearing seat (21). The height of the downward protrusion of the concave pool is less than the installation height of the sector bearing slider (22) on the bearing seat (21) and greater than the installation height of the fins (223). The lower end of the gland also has an inwardly protruding buckle (233), and correspondingly, the edge of the lower end face of the bearing seat (21) has a concave hole (212) which is clamped by the buckle (233) to fix the gland.
3. The gland type water lubricated thrust bearing for the water-cooled submersible motor for well use according to claim 1, characterized in that: The gland (23) is in a disc shape and installed on the upper end face of the bearing seat (21). The position where the periphery of the disc overlaps with the sector bearing slider (22) has a U-shaped notch (234), and the U-shaped notch exposes the sliding plane of the sector bearing slider (22) and covers the fins (223). There is also a downwardly protruding counterbore (235) on the disc plane between the two U-shaped notches. The center of the counterbore (235) has a screw hole (236). The height of the downward protrusion of the counterbore (235) is less than the installation height of the sector bearing slider (22) on the bearing seat (21) and greater than the installation height of the fins (223). Correspondingly, the upper end face of the bearing seat (21) has a screw hole (213) which is matched with the position of the screw hole (236), and the gland (23) is fixed on the bearing seat (21) by a fixing screw (24).