Thrust bearing spring bundle limiting structure

Abstract

The utility model discloses a thrust bearing spring bundle limiting structure, and relates to the technical field of thrust bearings of hydroelectric generating sets, in particular to the thrust bearing spring bundle limiting structure which comprises a limiting baffle, an outer side baffle, a thrust base, spacer blocks, a spring bundle and a tile support. A spring bundle is arranged in the middle of the thrust base, and a limiting baffle is arranged between the spring bundle and the spacer block. The outer side shape of the limiting baffle is matched with the spacing blocks on the two sides, and the inner side shape of the limiting baffle is matched with the spring bundle; the outer baffle is arranged on the radial outer side of the spring bundle, and the tile supports are arranged between the spacer blocks on the spring bundle. The device has the advantages of improving the mounting efficiency, enhancing the positioning precision, optimizing the structural stability, reducing the maintenance cost, improving the safety and reducing the field processing time.

Description

Technical Field

[0001] This utility model relates to the field of thrust bearing technology for hydroelectric generator sets, and specifically to a thrust bearing spring bundle limiting structure. Background Technology

[0002] In vertical hydroelectric generator units, the thrust bearing plays a crucial role, bearing the weight of the rotating parts and the thrust of the water, ensuring the safe and stable operation of the unit. Hydroelectric thrust bearings are large sliding bearings, typically employing a segmented bearing structure. This design allows the bearing segments to swing freely around the bearing support center. When the unit rotates, a wedge-shaped oil film forms between the bearing and the reflector plate. This oil film can levitate the rotor, which weighs hundreds or even thousands of tons, thereby reducing friction and wear and ensuring the smooth operation of the unit.

[0003] Spring bundle support structures are among the main support structures in the thrust bearings of hydroelectric generators, widely used due to their high load-bearing capacity and low temperature rise. In spring bundle support structures, the arrangement and limiting design of the spring bundles have a significant impact on the performance of the thrust bearing. Traditional spring bundle limiting baffles are mostly of a distributed design, making installation complex and time-consuming. Specifically, existing spring limiting baffles require positioning after the springs are arranged, which not only increases the difficulty of installation but also necessitates drilling numerous holes in the thrust bearing base to accommodate the spring limiting baffles. Drilling holes, especially at the inner diameter, is not only time-consuming and labor-intensive but can also easily affect the structural strength of the base.

[0004] Furthermore, traditional distributed spring limiting baffles lack sufficient positioning accuracy, making it difficult to ensure that the spring bundle remains in the correct position during operation, which may affect the load-bearing capacity and stability of the thrust bearing. Therefore, it is necessary to design a new spring bundle limiting structure to improve installation efficiency, enhance positioning accuracy, and optimize the overall performance of the thrust bearing.

[0005] In summary, existing technologies have significant shortcomings in the design and installation of spring coil limiting baffles, necessitating a simpler, more efficient, and precise limiting structure to address these issues. This patent application addresses this background by proposing a design for an integrated spring coil limiting baffle, aiming to overcome the deficiencies of existing technologies and improve the performance and reliability of thrust bearings. Utility Model Content

[0006] The present invention aims to overcome the shortcomings of the prior art and provide a thrust bearing spring bundle limiting structure.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A thrust bearing spring bundle limiting structure includes: a limiting baffle, an outer baffle, a thrust base, a spacer block, a spring bundle, and a bearing bracket. Spacer blocks are provided on both sides of the thrust base, and a spring bundle is provided in the middle of the thrust base. A limiting baffle is provided between the spring bundle and the spacer block.

[0009] The limiting baffle is set as a whole, with its outer shape matching the two side spacers and its inner shape matching the spring bundle;

[0010] The outer baffle is located radially outside the spring bundle, and the wedge is located between the spacers on the spring bundle.

[0011] Furthermore, the outer side of the limiting baffle is set with a V-shaped structure that matches the spacers on both sides, and the inner side is set according to the shape of the spring bundle arrangement.

[0012] Furthermore, after the outer baffle is installed, it connects with the limiting baffle to form a complete limiting structure that tightly surrounds the spring bundle.

[0013] Furthermore, a groove for a limiting baffle is provided at the junction of the spacer block and the thrust base.

[0014] Furthermore, the height of the groove is set to be slightly greater than the height of the limiting baffle.

[0015] Furthermore, the outer baffle is provided with bolt holes, and the thrust base is provided with bolt holes for fixing the outer baffle at the corresponding position.

[0016] Furthermore, both the limiting baffle and the outer baffle are arranged symmetrically along the radial direction of the thrust base.

[0017] Furthermore, the side of the outer baffle that connects with the spring bundle is set to an arc shape that matches the shape of the spring bundle.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] 1. Improved Installation Efficiency: The integrated spring-loaded limiting baffle design significantly simplifies the installation process. Compared to traditional distributed baffles that require separate installation and positioning of multiple components, the integrated design reduces installation steps and time. In particular, it reduces the number of on-site drilled threaded holes, greatly reducing installation complexity.

[0020] 2. Enhanced positioning accuracy: The outer shape of the integrated limit baffle matches the spacer block, and the inner shape matches the arrangement shape of the spring bundle. This precise matching design ensures accurate positioning of the spring bundle and improves the working accuracy and stability of the thrust bearing.

[0021] 3. Optimized structural stability: The outer baffle and the limiting baffle form a complete limiting structure, which is tightly set around the spring bundle, effectively preventing the spring bundle from shifting or loosening during operation, enhancing the stability of the structure, and thus improving the overall performance of the thrust bearing.

[0022] 4. Reduced maintenance costs: The rationally designed limiting structure reduces thrust bearing wear, lowers maintenance costs, and extends equipment lifespan. Furthermore, precise positioning and a stable structure reduce the probability of malfunctions and decrease maintenance frequency.

[0023] 5. Enhanced Safety: This design ensures the stability of the thrust bearing during operation, thereby improving the overall safety of the unit. Stable bearing performance reduces the risk of downtime due to bearing failure, ensuring the continuity and reliability of power production.

[0024] 6. Reduced on-site processing time: The integrated limit baffle design reduces the need for drilling holes in the thrust bearing base, especially in the inner diameter, which significantly saves on-site processing time and speeds up project progress.

[0025] 7. Easy to disassemble and maintain: The symmetrically arranged limit baffles and outer baffles, as well as the reasonable bolt hole design, make the disassembly and maintenance of the thrust bearing more convenient and quick, reducing the workload and time of maintenance personnel. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the installation structure of the limiting baffle of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the limiting baffle after installation of this utility model;

[0029] Figure 4 This is the book Figure 3 A-A cross-section.

[0030] Marked in the image:

[0031] 1 - Limiting baffle, 2 - Outer baffle, 3 - Thrust base, 4 - Spacer block, 5 - Spring bundle, 6 - Wapper, 7 - Groove, 8 - Bolt hole. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings.

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0034] Example 1

[0035] In this embodiment, as Figure 1 , 2 As shown, a thrust bearing spring bundle limiting structure includes: a limiting baffle 1, an outer baffle 2, a thrust base 3, a spacer block 4, a spring bundle 5, and a bearing 6. Spacer blocks 4 are provided on both sides of the thrust base 3, and a spring bundle 5 is provided in the middle of the thrust base 3. A limiting baffle 1 is provided between the spring bundle 5 and the spacer block 4.

[0036] The limiting baffle 1 is set as a whole, with its outer shape matching the two side spacers 4 and its inner shape matching the spring bundle 5;

[0037] The outer baffle 2 is located radially outside the spring bundle 5, and the wedge 6 is located between the spacers 4 on the spring bundle 5.

[0038] Specifically, the limiting baffle 1 adopts an integral design, with its outer shape precisely matching the contour of the spacer block 4 to ensure accurate alignment during installation. The inner shape is customized according to the arrangement of the spring bundle 5 to ensure its stability during operation. The outer baffle 2 fits tightly against the outer side of the spring bundle 5, forming a complete limiting structure. The axial displacement of the spring bundle 5 is then limited by the wedge 6 to achieve the limiting function.

[0039] This integrated limit baffle 1 design improves the positioning accuracy of the spring bundle 5, eliminates the bolt segmented fixing method, and ensures that the spring bundle 5 remains stable during operation, thereby improving the overall performance and reliability of the thrust bearing.

[0040] Furthermore, the outer side of the limiting baffle 1 is configured as a V-shaped structure that matches the two side spacers 4, and the inner side is configured according to the shape of the spring bundle 5.

[0041] The V-shaped design, combined with the fixed design of the outer baffle 2, can restrict the movement of the limiting baffle 1 in the radial direction of the thrust base 3.

[0042] The V-shaped outer design enhances the fit between the limiting baffle 1 and the spacer block 4, improving installation convenience and stability. The inner surface is designed according to the shape of the spring bundle 5, further ensuring its precise positioning and preventing offset during operation.

[0043] Furthermore, after the outer baffle 2 is installed, it connects with the limiting baffle 1 to form a complete limiting structure that tightly surrounds the spring bundle 5.

[0044] Specifically, the contact surface between the outer baffle 2 and the limiting baffle 1 is set as an inclined surface that matches the V-shaped surface of the limiting baffle 1. After installation, the inner surfaces of the outer baffle 2 and the limiting baffle 1 form a shape that matches the outer surface of the spring bundle 5.

[0045] The complete limiting structure tightly surrounds the spring bundle 5, effectively preventing the spring bundle 5 from shifting or loosening during operation, enhancing the stability of the structure, and improving the load-bearing capacity and service life of the thrust bearing.

[0046] The installation of the outer baffle 2 ensures that the spring bundle 5 will not move laterally during operation. The complete limiting structure tightly surrounds the spring bundle 5, providing all-round protection and support.

[0047] Furthermore, a groove 7 for limiting the limit baffle 1 is provided at the junction of the spacer block 4 and the thrust base 3.

[0048] The groove 7 provides a secure locking position for the limiting baffle 1, ensuring that the limiting baffle 1 will not loosen or fall off after installation, thus improving the stability and reliability of the entire limiting structure.

[0049] Furthermore, the height of the groove 7 is set to be slightly greater than the height of the limiting baffle 1.

[0050] Specifically, a long strip groove 7 is provided at the bottom of the spacer block 4, which matches the thickness of the limiting baffle 1. After the limiting baffle 1 is inserted, it can restrict its radial displacement. Due to the V-shaped structure design, the limiting baffle 1 can only be pushed into the groove 7 from the outer baffle 2. Thus, after the spring bundle 5 and the outer baffle 2 are installed, the limiting baffle 1 can be completely fixed.

[0051] The height of the groove 7 is slightly greater than the height of the limiting baffle 1 to ensure that the limiting baffle 1 can be fully inserted into the groove 7, while avoiding installation difficulties due to excessive height or insufficient stability due to insufficient height.

[0052] Furthermore, the outer baffle 2 is provided with bolt holes 8, and the thrust base 3 is provided with bolt holes 8 at corresponding positions for fixing the outer baffle 2.

[0053] The bolt holes 8 are designed to facilitate the fixing of the outer baffle 2, ensuring the stability of the limiting structure. At the same time, the symmetrical arrangement of the bolt holes 8 makes installation more convenient and quick, improving installation efficiency.

[0054] Furthermore, both the limiting baffle 1 and the outer baffle 2 are arranged radially symmetrically along the thrust base 3.

[0055] The symmetrical design ensures the balance and stability of the limiting structure, avoids stress concentration or displacement during operation caused by asymmetry, and improves the performance of the thrust bearing.

[0056] Furthermore, the side of the outer baffle 2 that connects with the spring bundle 5 is set to an arc shape that matches the shape of the spring bundle 5.

[0057] The arc-shaped design ensures a tight contact between the outer baffle 2 and the spring bundle 5, avoiding gaps or loosening during operation and improving the effectiveness and reliability of the limiting structure.

[0058] Example 2

[0059] Based on Embodiment 1, a method for installing a thrust bearing spring bundle limiting structure is provided, including the following steps:

[0060] S1: Install the spacer block 4 on the thrust base 3, and place one end of the limit baffle 1 on the thrust base 3;

[0061] S2: After cleaning the groove 7, push the limiting baffle 1 radially along the thrust base 3;

[0062] S3: After the limit baffle 1 is pushed inward into place, it is locked into the groove 7;

[0063] S4: Arrange the multiple spring bundles 5 according to the bearing design drawings;

[0064] S5: Install the outer baffle 2 and tighten it with bolts.

[0065] This installation method is simple and efficient, reducing on-site processing time and improving installation accuracy and efficiency. Meanwhile, the symmetrically arranged limiting baffle 1 and outer baffle 2, along with the well-designed bolt holes 8, make the disassembly and maintenance of the thrust bearing more convenient and quick. Furthermore, in step S5, the outer baffle is first trial-installed to confirm that it fits tightly against the spring bundle with the limiting baffle. After marking the bolt hole positions on the thrust base, the outer baffle is removed, holes are drilled in the thrust base, and then the outer baffle is installed through the drilled bolt holes.

[0066] This method achieves the optimal limiting position of the outer baffle, preventing gaps from appearing and reducing the limiting effect.

[0067] The trial installation and marking of bolt hole positions ensured the accurate installation of the outer baffle, avoiding rework or structural instability caused by improper installation, and improving installation quality and efficiency.

[0068] Specific installation process:

[0069] 1. Installation Preparation

[0070] Confirm the integrity of components such as the thrust base, spacer, spring bundle, limit baffle, outer baffle, and wrench.

[0071] Clean the surface of the thrust base to ensure it is free of oil, dust, and other impurities.

[0072] 2. Install spacers

[0073] Install the spacer blocks in the predetermined positions on the thrust base according to the design drawings. Ensure the spacer blocks are securely installed and accurately positioned.

[0074] 3. Install limit baffles

[0075] Place one end of the limit baffle on the thrust base.

[0076] The groove where the cleaning spacer block meets the thrust base.

[0077] Push the limiting baffle radially along the thrust base until it is fully engaged in the groove.

[0078] 4. Arrange the spring bundles

[0079] According to the bearing design drawings, arrange multiple spring bundles in the middle of the thrust base. Ensure that the spring bundles are accurately positioned and match the inner shape of the limit baffle.

[0080] 5. Install the outer baffle.

[0081] Test install the outer baffle and confirm that it fits tightly against the spring bundle with the limit baffle. Mark the bolt hole positions on the thrust base.

[0082] Remove the outer baffle and drill holes in the thrust base according to the marked positions.

[0083] Install the outer baffle through the drilled bolt holes and tighten it with bolts.

[0084] 6. Install Vato

[0085] The Vato is installed between the spacers on the spring bundle.

[0086] Ensure the Vato is installed securely and in the correct position.

[0087] 7. Pre-operation checks

[0088] Check the installation of all components to ensure there are no loose or misaligned parts.

[0089] Check the oil system to ensure it is unobstructed and free of blockages.

[0090] 8. Operation and Maintenance

[0091] Start the unit and observe the operation of the thrust bearing to ensure there are no abnormal noises or vibrations.

[0092] Regularly check the temperature and wear of the thrust bearing, and replace any damaged parts promptly.

[0093] Clean the oil system regularly to ensure it remains unobstructed.

[0094] Adjustments and maintenance should be made according to actual conditions to ensure the long-term stable operation of the thrust bearing.

[0095] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A thrust bearing spring bundle limiting structure, characterized in that: include: Limiting baffle (1), outer baffle (2), thrust base (3), spacer (4), spring bundle (5) and wrench (6), spacer (4) is provided on both sides of the thrust base (3), spring bundle (5) is provided in the middle of the thrust base (3), and limiting baffle (1) is provided between the spring bundle (5) and the spacer (4); The limiting baffle (1) is set as a whole, with its outer shape matching the two side spacers (4) and its inner shape matching the spring bundle (5); The outer baffle (2) is located radially outside the spring bundle (5), and the wato (6) is located between the spacers (4) on the spring bundle (5).

2. The thrust bearing spring bundle limiting structure according to claim 1, characterized in that: The outer side of the limiting baffle (1) is configured as a V-shaped structure that matches the two side spacers (4), and the inner side is configured according to the shape of the spring bundle (5).

3. The thrust bearing spring bundle limiting structure according to claim 1, characterized in that: After installation, the outer baffle (2) is connected to the limiting baffle (1) to form a complete limiting structure that tightly surrounds the spring bundle (5).

4. The thrust bearing spring bundle limiting structure according to claim 1, characterized in that: The spacer block (4) is provided with a groove (7) for limiting the limit baffle (1) at the junction with the thrust base (3).

5. The thrust bearing spring bundle limiting structure according to claim 4, characterized in that: The height of the groove (7) is set to be slightly greater than the height of the limiting baffle (1).

6. The thrust bearing spring bundle limiting structure according to claim 1, characterized in that: The outer baffle (2) is provided with bolt holes (8), and the thrust base (3) is provided with bolt holes (8) for fixing the outer baffle (2) at the corresponding position.

7. The thrust bearing spring bundle limiting structure according to claim 1, characterized in that: The limiting baffle (1) and the outer baffle (2) are both arranged radially symmetrically along the thrust base (3).

8. The thrust bearing spring bundle limiting structure according to claim 1, characterized in that: The outer side of the baffle (2) that connects with the spring bundle (5) is set to an arc shape that matches the shape of the spring bundle (5).

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