Fixing rod of mixed-flow water turbine bearing bush gap adjusting fixing plate
By designing a fixed rod for adjusting the clearance of the bearing bushing by the turbine, the offset problem caused by the gap between the fixed sleeve and the double-head screw in the prior art is solved, and the precise adjustment of the bearing bushing clearance and the stability of the unit operation are achieved.
Patent Information
- Application Number
- CN202421905911.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-07
AI Technical Summary
In the adjustment of the clearance of the bearing bushing of existing turbines, there is a gap between the fixed sleeve and the double-headed screw, which will cause deviation during the unit operation, affecting the stability of the bearing bushing clearance and the normal operation of the unit.
A fixing rod for adjusting the fixing plate of the bearing bushing gap of a hybrid-flow turbine is designed, including an adjusting fixing rod and a support fixing rod. Through the combination of the fixing rod clamping part, a fixing rod screw and a fixing rod screw, the fixing plate is accurately adjusted to avoid deviation caused by the gap.
It improves the accuracy and stability of the bearing clearance adjustment, saves installation and adjustment time, reduces production costs, and avoids deviation problems caused by clearance, ensuring the normal operation of the unit.
Smart Images
Figure CN222874383U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of positioning a wedge plate fixing plate in adjusting a bushing clearance, in particular to a fixing rod of a Francis turbine bushing clearance adjusting fixing plate. Background Art
[0002] The mixed flow turbine has a compact structure, high efficiency, and can adapt to a wide range of water heads. It is one of the turbine types currently widely used in countries around the world. When water flows through the working wheel of this turbine, it enters and flows out axially, so it is also called an axial-flow turbine. Usually, the guide bearing is installed in the oil groove of the center body of the frame and is composed of multiple fan-shaped swinging bushes. In order to ensure that the bearing bush is not burned during operation, the oil film gap between the bearing bush and the shaft collar must be designed according to the national standard requirements.
[0003] When adjusting the bearing clearance of the existing turbine, it is usually necessary to first clamp the bearing and the main shaft, then calculate the height to which the wedge plate needs to be lifted according to the required clearance, and then process the pipe sleeve according to the height to which the wedge plate needs to be lifted, and then adjust the clearance in coordination with the pipeline by adjusting the distance between the double-headed screw and the nut. Although the above method can adjust the bearing clearance, there is a gap between the fixed sleeve and the double-headed screw, which will cause a certain degree of deviation during the operation of the unit, and eventually cause the bearing clearance to change, which may affect the normal operation of the unit. For this reason, we propose a fixing rod for a fixed plate for adjusting the bearing clearance of a mixed flow turbine. Utility Model Content
[0004] The utility model aims to provide a fixing rod for adjusting the gap between the bearing bush of a mixed flow turbine, so as to solve the problem that a gap exists between the existing fixing sleeve and the double-headed screw, which may cause a certain degree of deviation during the operation of the unit, thereby affecting the normal operation of the entire unit.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A fixing rod of a mixed flow turbine bearing clearance adjustment fixing plate comprises an adjusting fixing rod and a supporting fixing rod, the adjusting fixing rod comprises a fixing rod clamping portion, both ends of the fixing rod clamping portion are rotatably connected to fixing rod connecting portions, one of the fixing rod connecting portions is rotatably connected to a fixing rod lead screw away from the fixing rod clamping portion, and the other fixing rod connecting portion is fixedly connected to an end of the fixing rod connecting portion away from the fixing rod clamping portion, the fixing rod clamping portion is fixedly connected to the fixing rod lead screw, the supporting fixing rod comprises a sliding fixing rod, the top of the sliding fixing rod is fixedly connected to a sliding screw, and the bottom of the sliding fixing rod is fixedly connected to a connecting screw.
[0007] Preferably, the fixing rod clamping portion comprises an elastic sleeve, the fixing rod clamping portion is a cylinder, and the elastic sleeve is fixedly connected to the cylinder.
[0008] Preferably, the fixing rod clamping portion comprises a flexible pad, the fixing rod clamping portion is a sphere, and the flexible pad is sleeved on the outside of the sphere and fixedly connected to the sphere.
[0009] Preferably, the fixing rod clamping portion comprises an anti-slip pad, and the fixing rod clamping portion is a rectangular parallelepiped, and grooves are symmetrically provided inside the rectangular parallelepiped, and ends of two grooves close to each other are fixedly connected to the anti-slip pad.
[0010] Preferably, the fixing rod clamping portion is a hexahedron.
[0011] Preferably, the fixing rod clamping portion comprises a protrusion, the fixing rod clamping portion is a cube, and a plurality of the protrusions are fixedly connected to the cube.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The fixing rod of the new Francis turbine bearing clearance adjustment fixing plate in this scheme has high installation efficiency, and there is no need to process the adjustment sleeve length every time the bearing clearance is adjusted, which is conducive to saving processing costs and time. The fixing rod clamping part adopts different shapes and can adapt to different shapes of clamps, which is convenient for fixing and clamping;
[0014] 2. After the fixing rod of the fixing plate for adjusting the bearing clearance of the new mixed flow turbine is used, the present invention can avoid the gap between the fixing sleeve and the double-headed screw, and has high adjustment accuracy, which facilitates the adjustment of the bearing clearance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the fixing rod of the utility model;
[0017] Figure 3 This is a schematic diagram of the cylindrical clamping portion of the utility model;
[0018] Figure 4 This is a schematic diagram of the spherical clamping portion of the utility model;
[0019] Figure 5 It is a schematic diagram of the rectangular clamping part of the utility model.
[0020] In the accompanying drawings, the list of parts represented by each reference numeral is as follows: 1. Fixed rod screw; 2. Fixed rod connecting part; 3. Fixed rod clamping part; 4. Fixed rod screw; 5. Cylinder; 6. Elastic sleeve; 7. Sphere; 8. Flexible pad; 9. Rectangle; 10. Groove; 11. Anti-slip pad; 12. Cuboid; 13. Bump; 14. Nut; 15. Base; 16. Shaft; 17. Wedge block; 18. Support block one; 19. Support column; 20. Hexahedron; 21. Adjustable fixed rod; 22. Fixed plate; 23. Support block two; 24. Sliding fixed rod; 25. Connecting screw; 26. Sliding screw; 27. Support fixed rod. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0022] Embodiment 1: Figure 1 - Figure 5As shown, a fixing rod of a bearing bushing clearance adjustment fixing plate of a Francis turbine shown in the figure includes an adjusting fixing rod 21 and a supporting fixing rod 27. The adjusting fixing rod 21 includes a fixing rod clamping portion 3. The fixing rod clamping portion 3 is a hexahedron 20. The hexahedron 20 is convenient for clamping with an open-end wrench. Both ends of the fixing rod clamping portion 3 are rotatably connected to fixing rod connecting portions 2. One of the fixing rod connecting portions 2 is rotatably connected to a fixing rod screw 1 away from the fixing rod clamping portion 3. The other fixing rod connecting portion 2 is fixedly connected to one end away from the fixing rod clamping portion 3 with a fixing rod screw 4. The top of the base 15 is fixedly connected to the bearing bushing 1. 6. The outer part of the bearing shaft 16 is fixedly connected with a support block 18, the top of the base 15 is fixedly connected with a support column 19, the top of the support column 19 is fixedly connected with a support block 23, the support block 23 is threadedly connected with the fixed rod screw 1, the top of the fixed rod screw 4 is fixedly connected with a fixed plate 22, the support fixed rod 27 includes a sliding fixed rod 24, the top of the sliding fixed rod 24 is fixedly connected with a sliding screw 26, the bottom of the sliding fixed rod 24 is fixedly connected with a connecting screw 25, the sliding fixed rod 24 is slidably sleeved with the fixing plate 22, the top of the sliding fixed rod 24 is fitted with the fixing plate 22, and the connecting screw 25 is fixedly connected with the fixing plate 22. The bottom of the support plate 5 is fixedly connected with a wedge block 17, the wedge block 17 is located between the support block 18 and the support block 23, and the wedge block 17 fits with the support block 18. The adjustment fixing rod 21 of the novel Francis turbine bearing clearance adjustment fixing plate 22 has high installation efficiency, which can save installation time. At the same time, there is no need to process the pipe sleeve before adjustment, which is beneficial to saving production costs. When the fixing plate 22 needs to be adjusted, an open-end wrench is used to clamp the outside of the fixing rod clamping part 3, and then the fixing rod clamping part 3 is rotated. The fixing rod clamping part 3 drives the fixing rod screw 1 to rotate, thereby driving the fixing rod connecting part 2 along the fixed The fixed rod screw 1 moves upward, and then drives the fixed plate 22 to move upward through the fixed rod screw 4. At the same time, the fixed plate 22 slides along the sliding screw 26 on the supporting fixed rod 27, thereby driving the wedge block 17 to move upward, and then adjusting the water guide bearing clearance. After the adjustment is completed, the sliding screw 26 is fixed by the nut 14. After use, the adjustment fixing rod 21 of the new mixed flow turbine bearing clearance adjustment fixing plate 22 can avoid a certain degree of deviation during the operation of the unit due to the gap between the fixed sleeve and the double-headed screw, which eventually leads to a change in the bearing clearance.
[0023] Example 2: Please refer to Figure 3 , this is another shape of the fixing rod clamping part 3, the fixing rod clamping part 3 includes an elastic sleeve 6, the fixing rod clamping part 3 is a cylinder 5, the elastic sleeve 6 is fixedly connected to the cylinder 5, and the elastic sleeve 6 is made of rubber;
[0024] Example 3: Please refer to Figure 4 This is another shape of the fixing rod clamping portion 3. For further information, please refer to Figure 2 The fixing rod clamping part 3 includes a flexible pad 8, the fixing rod clamping part 3 is a sphere 7, the flexible pad 8 is sleeved on the outside of the sphere 7 and fixedly connected to the sphere 7, the flexible pad 8 is made of rubber and has shock absorption, wear resistance and the like.
[0025] Example 4: Please refer to Figure 5 This is another shape of the fixing rod clamping portion 3, refer to Figure 4 The fixing rod clamping portion 3 includes an anti-skid pad 11, which is made of styrene-butadiene rubber, can adapt to different environments, and has good elasticity and wear resistance. The fixing rod clamping portion 3 is a rectangular parallelepiped 9, and grooves 10 are symmetrically opened inside the rectangular parallelepiped 9. By using a clamp to extend into the interior of the groove 10, it is convenient to clamp and fix the fixing rod clamping portion 3, and the ends of the two grooves 10 that are close to each other are fixedly connected to the anti-skid pad 11.
[0026] Example 5: Please refer to Figure 2 This is another shape of the fixing rod clamping portion 3. In addition, the fixing rod clamping portion 3 includes a protrusion 13. The fixing rod clamping portion 3 is a cube 12. Multiple protrusions 13 are fixedly connected to the cube 12. It should be noted that different shapes can adapt to different clamps, which is convenient for users to clamp them and is also beneficial for adjusting the gap of the water guide bearing.
[0027] To sum up, when using the adjustable fixing rod 21, first use an open-end wrench to clamp the outside of the fixing rod clamping part 3, then rotate the fixing rod clamping part 3, the fixing rod clamping part 3 drives the fixing rod screw 1 to rotate, thereby driving the fixing rod connecting part 2 to move upward along the fixing rod screw 1, and then driving the fixing plate 22 to move upward through the fixing rod screw 4. At the same time, the fixing plate 22 slides along the sliding screw 26 on the supporting fixing rod 27, thereby driving the wedge block 17 to move upward, and then adjusting the water guide bearing clearance. When the adjustment is completed, the sliding screw 26 can be fixed by the nut 14.
[0028] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.
Claims
1. A fixing rod of a Francis turbine bearing clearance adjustment fixing plate, comprising an adjusting fixing rod (21) and a supporting fixing rod (27), characterized in that: The adjusting fixed rod (21) comprises a fixed rod clamping portion (3), both ends of the fixed rod clamping portion (3) are rotatably connected to the fixed rod connecting portion (2), one of the fixed rod connecting portions (2) is rotatably connected to the fixed rod screw (1) away from the fixed rod clamping portion (3), and the other end of the fixed rod connecting portion (2) away from the fixed rod clamping portion (3) is fixedly connected to the fixed rod screw (4), the fixed rod clamping portion (3) is fixedly connected to the fixed rod screw (1), and the supporting fixed rod (27) comprises a sliding fixed rod (24), the top of the sliding fixed rod (24) is fixedly connected to the sliding screw (26), and the bottom of the sliding fixed rod (24) is fixedly connected to the connecting screw (25).
2. The fixing rod of the Francis turbine bearing clearance adjustment fixing plate according to claim 1, characterized in that: The fixing rod clamping portion (3) comprises an elastic sleeve (6); the fixing rod clamping portion (3) is a cylinder (5); and the elastic sleeve (6) is fixedly connected to the cylinder (5).
3. The fixing rod of the Francis turbine bearing clearance adjustment fixing plate according to claim 1, characterized in that: The fixing rod clamping portion (3) comprises a flexible pad (8), the fixing rod clamping portion (3) is a sphere (7), and the flexible pad (8) is sleeved outside the sphere (7) and fixedly connected to the sphere (7).
4. The fixing rod of the Francis turbine bearing clearance adjustment fixing plate according to claim 1, characterized in that: The fixing rod clamping portion (3) comprises an anti-slip pad (11). The fixing rod clamping portion (3) is a rectangular parallelepiped (9). Grooves (10) are symmetrically provided inside the rectangular parallelepiped (9). The ends of the two grooves (10) that are close to each other are fixedly connected to the anti-slip pad (11).
5. The fixing rod of the Francis turbine bearing clearance adjustment fixing plate according to claim 1, characterized in that: The fixing rod clamping portion (3) is a hexahedron (20).
6. The fixing rod of the Francis turbine bearing clearance adjustment fixing plate according to claim 1, characterized in that: The fixing rod clamping portion (3) comprises a convex block (13); the fixing rod clamping portion (3) is a quadrilateral (12); and a plurality of the convex blocks (13) are fixedly connected to the quadrilateral (12).