Device for preventing temperature of guide bearing bush from being too high in hydropower station

Abstract

The utility model relates to the technical field of hydropower station guide bearings, and discloses a hydropower station guide bearing bush overtemperature prevention device which comprises a bearing seat, a bearing groove, an end groove and a driving shaft, the exterior of the driving shaft is in running fit with the inner side of the bearing groove through a guide bearing bush, and stirring blades are installed on the periphery of the exterior of the driving shaft through a sleeving ring piece. According to the utility model, the bearing groove is internally provided with the expanding groove communicated with the bearing groove, and the bearing groove and the expanding groove are filled with the cooling oil, when the end groove operates, the sleeving ring piece outside the end groove can drive the multiple groups of stirring blades to stir the cooling oil in the bearing groove in an adaptive linkage manner, and every two groups of stirring blades are arranged in a mirror symmetry manner; when the stirring blades rotate, cooling oil can be stirred to move towards the two sides of the sleeving ring piece, stirring of the cooling oil is accelerated, rapid heat absorption of the guide bearing bush is achieved, the cooling oil in the bearing groove and the expansion groove directly makes contact with the guide bearing bush to be cooled, and therefore the heat dissipation effect of the guide bearing bush is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of guide bearings for hydropower stations, in particular to a device for preventing guide bearing bushes from overheating in a hydropower station. Background Art

[0002] When the existing guide bearing assembly for hydropower stations is installed and used, the guide bearing bushes will rotate with the internal support of the bearing seat. However, during the operation of the device, the impeller is traditionally set on the periphery of the drive shaft to pump oil to cool the bush surface, but the cooling effect is limited. Therefore, we propose a device for preventing the guide bearing bush from overheating in hydropower stations. Utility Model Content

[0003] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a device for preventing the guide bearing bush from overheating in a hydropower station.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for preventing the guide bearing bush from overheating in a hydropower station, comprising a bearing seat, a bearing groove is provided inside the bearing seat, end grooves penetrating the bearing groove are provided on both sides of the bearing seat, a drive shaft is provided inside the bearing groove, the outside of the drive shaft is rotatably matched with the inner side of the bearing groove through the guide bearing bush, a sleeve ring is installed on the outside of the drive shaft, and stirring blades for stirring the cooling oil inside the bearing groove are installed on the periphery of the sleeve ring.

[0005] Preferably, the stirring blades are arranged circumferentially around the sleeve ring with the central axis of the sleeve ring being located outside the sleeve ring, and each two groups of stirring blades are in a mirror-symmetric state;

[0006] Furthermore, the stirring blades on the outer periphery of the sleeve ring are in a corresponding rotation linkage state when the driving shaft is driven to rotate, and the cooling oil inside the bearing groove is in a stirring motion state in coordination with the rotation of the stirring blades.

[0007] Preferably, an expansion groove is provided on the inner side of the bearing groove, a filling screw groove for filling the inside of the bearing groove is provided on the top of the bearing seat, and the inner thread of the filling screw groove is connected to a first sealing plug for sealing the filling screw groove;

[0008] Furthermore, the cooling oil inside the bearing seat can be filled and replaced through the provided filling screw groove.

[0009] Preferably, a through liquid guide groove is provided on the inner side of the expansion groove, a connecting screw groove connected to the liquid guide groove is provided on one side of the bearing seat, and a second sealing plug for sealing the liquid guide groove is installed on the inner thread of the connecting screw groove;

[0010] Furthermore, the liquid guide groove is an arc-shaped hollow groove body, and the cooling oil inside the bearing seat can be discharged and replaced through the opened liquid guide groove.

[0011] Beneficial Effects

[0012] The utility model provides a device for preventing the guide bearing bush from overheating in a hydropower station. It has the following beneficial effects:

[0013] (1) A device for preventing the guide bearing bush from overheating in a hydropower station. In this article, an expansion groove connected to the bearing groove is opened inside the bearing groove, and the bearing groove and the expansion groove are filled with cooling oil. When the drive shaft is running, the sleeve ring outside the drive shaft will adapt and drive multiple groups of stirring blades to stir the cooling oil inside the bearing groove, and each two groups of stirring blades are arranged in a mirror-symmetrical manner. As the stirring blades rotate, the cooling oil can be stirred to both sides of the sleeve ring, thereby accelerating the stirring of the cooling oil and allowing the guide bearing bush to quickly absorb heat. The cooling oil inside the bearing groove and the expansion groove is directly in contact with the guide bearing bush to cool down, thereby achieving the effect of improving the heat dissipation of the guide bearing bush itself.

[0014] (2) A device for preventing the guide bearing bush from overheating in a hydropower station. After the cooling oil in the bearing groove has been used for a certain period of time, when the second sealing plug connected to the screw groove is taken out, the cooling oil in the bearing groove can be discharged outward through the liquid guide groove, and the first sealing plug in the filling screw groove is rotated and taken out, and the cooling oil in the bearing groove can be refilled and replaced through the filling screw groove, thereby achieving the effect of facilitating the subsequent discharge and refilling of the cooling oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2It is a partial schematic diagram of the stirring blade of the utility model;

[0019] Figure 3 For this utility model Figure 1 A is an enlarged view of the middle image.

[0020] Legend:

[0021] 1. Bearing seat; 2. End groove; 3. Bearing groove; 4. Drive shaft; 5. Guide bearing; 6. Seal; 7. Sleeve ring; 8. Stirring blade; 9. Expansion groove; 10. Filling screw groove; 11. First sealing plug; 12. Liquid guide groove; 13. Connecting screw groove; 14. Second sealing plug. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment: A device for preventing the guide bearing bush from overheating in a hydropower station, such as Figure 1-Figure 3 As shown, it includes a bearing seat 1, a bearing groove 3 is provided inside the bearing seat 1, and end grooves 2 penetrating the bearing groove 3 are provided on both sides of the bearing seat 1. A driving shaft 4 is provided inside the bearing groove 3, and the outside of the driving shaft 4 is rotatably matched with the inner side of the bearing groove 3 through a guide bush 5. A sleeve ring 7 is installed on the outside of the driving shaft 4, and stirring blades 8 for stirring the cooling oil inside the bearing groove 3 are installed on the periphery of the sleeve ring 7. The stirring blades 8 are arranged circumferentially through the central axis of the sleeve ring 7 and are located on the periphery of the sleeve ring 7. Each two groups of stirring blades 8 are in a mirror-symmetrical state. The stirring blades 8 on the periphery of the sleeve ring 7 are driven by the driving shaft 4. When rotating, it is in a state of adaptive rotation linkage, and the cooling oil inside the bearing groove 3 is in a stirring motion state with the rotation of the stirring blade 8. An expansion groove 9 is provided on the inner side of the bearing groove 3, and a filling screw groove 10 for filling the inside of the bearing groove 3 is provided on the top of the bearing seat 1. The internal thread of the filling screw groove 10 is connected with a first sealing plug 11 for sealing the filling screw groove 10. A penetrating liquid guide groove 12 is provided on the inner side of the expansion groove 9. The liquid guide groove 12 is an arc-shaped hollow groove body. A connecting screw groove 13 connected to the liquid guide groove 12 is provided on one side of the bearing seat 1, and the internal thread of the connecting screw groove 13 is installed with a second sealing plug 14 for sealing the liquid guide groove 12.

[0024] The working principle of this utility model:

[0025] The bearing groove 3 and the expansion groove 9 are filled with cooling oil. When the drive shaft 4 is running, the sleeve ring 7 outside the drive shaft 4 will adapt and link to drive multiple groups of stirring blades 8 to stir the cooling oil inside the bearing groove 3, and every two groups of stirring blades 8 are arranged in a mirror-symmetrical manner. As the stirring blades 8 rotate, the cooling oil can be stirred on both sides of the sleeve ring 7, thereby accelerating the stirring of the cooling oil and allowing the guide bearing 5 to quickly absorb heat. The cooling oil inside the bearing groove 3 and the expansion groove 9 is in direct contact with the guide bearing 5 for cooling. After the cooling oil inside the bearing groove 3 has been used for a certain period of time, when the second sealing plug 14 inside the connecting screw groove 13 is taken out, the cooling oil inside the bearing groove 3 can be discharged outward through the liquid guide groove 12, and the first sealing plug 11 inside the filling screw groove 10 can be rotated and taken out, and the cooling oil inside the bearing groove 3 can be refilled and replaced through the filling screw groove 10.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for preventing a guide bearing shoe from overheating in a hydropower station, comprising a bearing seat (1), a bearing groove (3) being provided inside the bearing seat (1), and end grooves (2) penetrating the bearing groove (3) being provided on both sides of the bearing seat (1), characterized in that: A drive shaft (4) is arranged inside the bearing groove (3); the outside of the drive shaft (4) is rotatably matched with the inside of the bearing groove (3) through a guide bush (5); a sleeve ring (7) is sleeved on the outside of the drive shaft (4); and stirring blades (8) for stirring the cooling oil inside the bearing groove (3) are installed on the periphery of the sleeve ring (7).

2. A device for preventing guide bearing pads from overheating in a hydropower station according to claim 1, characterized in that: The stirring blades (8) are arranged circumferentially on the periphery of the sleeve ring (7) through the central axis of the sleeve ring (7), and each two groups of the stirring blades (8) are in a mirror-symmetrical state.

3. A device for preventing guide bearing pads from overheating in a hydropower station according to claim 2, characterized in that: The stirring blades (8) on the outer periphery of the sleeve ring (7) are in a corresponding rotation linkage state when the driving shaft (4) is driven to rotate, and the cooling oil inside the bearing groove (3) is in a stirring motion state in coordination with the rotation of the stirring blades (8).

4. A device for preventing guide bearing pads from overheating in a hydropower station according to claim 1, characterized in that: An expansion groove (9) is provided on the inner side of the bearing groove (3), a filling screw groove (10) for filling the interior of the bearing groove (3) is provided on the top of the bearing seat (1), and the internal thread of the filling screw groove (10) is connected to a first sealing plug (11) for sealing the filling screw groove (10).

5. A device for preventing guide bearing pads from overheating in a hydropower station according to claim 4, characterized in that: A through-flowing liquid guide groove (12) is provided on the inner side of the expansion groove (9), a connecting screw groove (13) connected to the liquid guide groove (12) is provided on one side of the bearing seat (1), and a second sealing plug (14) for sealing the liquid guide groove (12) is installed on the internal thread of the connecting screw groove (13).

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