Large-scale synchronous generator rotor magnetic pole pull rod structure
By designing a combined connection structure of grooves and round grooves on the rotor magnetic pole lever of a large synchronous generator and the spring buffer in the buffer groove, the vibration problem caused by wear of the magnetic pole lever is solved, the rapid replacement of the tie rod head and the stable operation of the generator are achieved, and the maintenance efficiency and service life of the equipment are improved.
Patent Information
- Application Number
- CN202422430801.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The pole pull rods of the rotor of existing large synchronous generators have severe wear during long-term use, resulting in increased vibration during the generator running, affecting output stability and power quality.
A large synchronous generator rotor magnetic pole pull rod structure is designed, using a groove and a circular groove at the front end of the magnetic pole pull rod. The combination of snap and limit bolts is connected to achieve rapid replacement of the tie rod head, and a spring is set in the buffer groove to buffer vibration to ensure the stability of the connection.
It improves the maintenance efficiency and service life of the equipment, reduces vibration caused by wear, ensures the stable operation of the generator, and reduces labor costs.
Smart Images
Figure CN223181900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotor pole tie rods, in particular to a rotor pole tie rod structure of a large synchronous generator. Background Art
[0002] The rotor of a large synchronous generator is one of the core components of the generator. It plays a key role in generating a rotating magnetic field in the generator. By interacting with the stator, it converts mechanical energy into electrical energy, providing a stable and reliable power supply for industrial production, residential life, etc. The efficient operation of the rotor of a large synchronous generator can ensure the stable output of the power system and meet the huge demand for electricity in different fields.
[0003] The pole tie rod structure is located in the rotor of a large synchronous generator. Its function is to connect and fix the pole part of the generator rotor, ensuring that the poles maintain a stable position and state during high-speed rotation, thereby ensuring the normal operation of the generator and the stable generation of the magnetic field.
[0004] At present, most of the pole tie rods on the market are made of a single whole tie rod. During long-term use, the tie rod head will wear, which will cause the vibration to increase during the operation of the generator, affecting the output stability of the generator and the power quality. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a rotor pole tie rod structure of a large synchronous generator, aiming to improve the problem that the tie rod head will wear in the prior art, which will cause the vibration to increase during the operation of the generator, affecting the output stability of the generator and the power quality.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a rotor pole tie rod structure of a large synchronous generator, including a pole tie rod. Grooves are equidistantly arranged at the front end of the pole tie rod. One side of the inner part of each of the multiple grooves is communicated with a clamping groove. Multiple circular grooves are equidistantly arranged on the outer wall at the front end of the pole tie rod. One side of the inner part of each of the multiple circular grooves is rotatably connected with a limit bolt. One end of each of the multiple limit bolts respectively penetrates through the corresponding clamping groove. A tie rod head is arranged on the front side of the pole tie rod. Clasps are fixedly connected equidistantly on the rear side of the tie rod head. Limit holes are arranged on one side of each of the multiple clasps.
[0007] Through the above technical solution: When it is necessary to connect the pull rod head to the magnetic pole pull rod, insert the buckle at the rear side of the pull rod head into the corresponding groove. At this time, since one side of the inside of multiple grooves is communicated with a clamping groove, the buckle can smoothly slide into the clamping groove to achieve preliminary positioning. Then, by rotating the limit bolts arranged in the multiple circular grooves equidistantly opened at the front end of the outer wall of the magnetic pole pull rod, one end of the limit bolt penetrates through the corresponding clamping groove. And the limit hole opened on one side of the buckle just corresponds to the limit bolt. After the limit bolt passes through the limit hole, the fixing of the buckle is realized, thereby firmly connecting the pull rod head to the magnetic pole pull rod, so that the pull rod head can be quickly replaced when it is worn after long-term use.
[0008] As a further description of the above technical solution:
[0009] A plurality of buffer grooves are equidistantly opened on the front side of the magnetic pole pull rod, one side of the inside of the plurality of buffer grooves is fixedly connected with a spring, and the front ends of the plurality of springs are fixedly connected with the same moving plate.
[0010] Through the above technical solution: When the generator generates vibration or is impacted by an external force during operation, the springs in the buffer grooves can play a buffering role, reducing the influence of the impact force on the connection part of the magnetic pole pull rod and the pull rod head.
[0011] As a further description of the above technical solution:
[0012] A limit groove is opened on the rear side of the pull rod head, and the limit groove is slidably connected with the moving plate.
[0013] Through the above technical solution: The moving direction of the moving plate can be restricted to ensure the effectiveness of the buffering effect, and it also plays an auxiliary positioning role when connecting the pull rod head and the magnetic pole pull rod.
[0014] As a further description of the above technical solution:
[0015] A magnetic pole punching piece is slidably connected to the outer wall of the magnetic pole pull rod, and a round hole is opened on the front side of the magnetic pole punching piece.
[0016] Through the above technical solution: The magnetic pole punching piece is mainly used to form a magnetic field in the generator. It is sleeved on the outer wall of the magnetic pole pull rod and cooperates with other components to realize the electromagnetic conversion function of the generator.
[0017] As a further description of the above technical solution:
[0018] A plurality of positioning holes are equidistantly opened on the front side of the magnetic pole punching piece, and the sizes of the plurality of positioning holes are the same.
[0019] Through the above technical solutions, it can be used for connection or fixation with other components to ensure the accurate position of the pole punching sheet in the generator, and the positioning holes of the same size facilitate standardized installation and maintenance.
[0020] As a further description of the above technical solutions:
[0021] The pole pull rod slides inside the round hole, and the size of the pole pull rod is consistent with that of the round hole.
[0022] Through the above technical solutions, the pole pull rod can slide therein, thus facilitating the installation and positioning of the pole punching sheet on the pole pull rod.
[0023] As a further description of the above technical solutions: [[ID=I3]]
[0024] The rear side of the moving plate is respectively slidably connected inside the corresponding buffer groove, and the size of the rear side of the moving plate matches that of the buffer groove.
[0025] Through the above technical solutions, the movement inside the moving plate is more stable.
[0026] As a further description of the above technical solutions:
[0027] A plurality of the snap fasteners slide inside the corresponding grooves, and one ends of a plurality of the limit bolts all penetrate through the corresponding limit holes.
[0028] Through the above technical solutions, the rapid connection and preliminary positioning of the pull rod head and the pole pull rod are realized. After the limit bolt penetrates through the limit hole, the stability of the connection is further enhanced, preventing the pull rod head and the pole pull rod from loosening or detaching during the operation of the generator.
[0029] The utility model has the following beneficial effects:
[0030] In the utility model, the preliminary positioning is realized by inserting the snap fastener into the groove and sliding it into the card slot, and the limit bolt passes through the limit hole of the snap fastener, thereby firmly connecting the pull rod head to the pole pull rod, enabling the pull rod head to be quickly replaced when it is worn after long-term use, improving the maintenance efficiency and service life of the equipment. Using a round pole pull rod is convenient for processing, time-saving and labor-saving, ensuring the fitting accuracy, and saving labor costs for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 is a perspective view of a rotor pole pull rod structure of a large synchronous generator proposed by the utility model;
[0032] Figure 2 is a front view of the structure of a rotor pole pull rod structure of a large synchronous generator proposed by the utility model;
[0033] Figure 3 The structural breakdown diagram of a rotor pole tie rod structure of a large synchronous generator proposed by the present utility model;
[0034] Figure 4 is Figure 3 the enlarged view at position A in
[0035] Figure 5 the rear view of the structure of a rotor pole tie rod structure of a large synchronous generator proposed by the present utility model.
[0036] Legend description:
[0037] 1. Pole tie rod; 2. Groove; 3. Card slot; 4. Round slot; 5. Limit bolt; 6. Tie rod head; 7. Snap; 8. Limit hole; 9. Buffer groove; 10. Spring; 11. Moving plate; 12. Limit groove; 13. Pole punching sheet; 14. Round hole; 15. Positioning hole. Specific implementation manners
[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0039] Referring to Figure 1 、 Figure 3 and Figure 5 , an embodiment provided by the present utility model: A rotor pole tie rod structure of a large synchronous generator includes a pole tie rod 1. The pole tie rod 1, as the main connecting component, plays a role in transmitting force and fixing other parts. Grooves 2 are equidistantly arranged at the front end of the pole tie rod 1. The grooves 2 provide an installation position for the snaps 7 at the rear side of the tie rod head 6. One side of the inside of each of the multiple grooves 2 communicates with a card slot 3. The card slot 3 is used for the snap 7 to slide in for preliminary positioning. Multiple round slots 4 are equidistantly arranged on the outer wall front end of the pole tie rod 1. The round slots 4 provide an installation space for the limit bolts 5. One side of the inside of each of the multiple round slots 4 is rotatably connected with a limit bolt 5. The limit bolt 5 is used to pass through the limit hole 8 of the snap 7 for fixation. One end of each of the multiple limit bolts 5 respectively penetrates through the corresponding card slot 3. A tie rod head 6 is arranged on the front side of the pole tie rod 1. The tie rod head 6 is used to connect other components. Snaps 7 are equidistantly and fixedly connected to the rear side of the tie rod head 6. The snaps 7 cooperate with the grooves 2 and the card slots 3 to achieve connection and positioning. Limit holes 8 are opened on one side of each of the multiple snaps 7. The limit holes 8 are for the limit bolts 5 to pass through to enhance the connection stability;
[0040] Specifically, when it is necessary to connect the pull rod head 6 to the magnetic pole pull rod 1, the buckle 7 on the rear side of the pull rod head 6 is inserted into the corresponding groove 2. At this time, since a card slot 3 is communicated with the inner side of each of the multiple grooves 2, the buckle 7 can smoothly slide into the card slot 3 to achieve preliminary positioning. Then, by rotating the limit bolt 5 arranged in the multiple circular grooves 4 equidistantly opened at the front end of the outer wall of the magnetic pole pull rod 1, one end of the limit bolt 5 penetrates through the corresponding card slot 3, and the limit hole 8 opened on one side of the buckle 7 just corresponds to the limit bolt 5. After the limit bolt 5 passes through the limit hole 8, the fixing of the buckle 7 is realized, so that the pull rod head 6 is firmly connected to the magnetic pole pull rod 1, ensuring that during the operation of the generator, the connection between the magnetic pole pull rod 1 and the pull rod head 6 is stable and reliable, enabling the pull rod head 6 to be quickly replaced when it is worn after long-term use.
[0041] Refer to Figure 2 、 Figure 3 and Figure 4 , including the magnetic pole pull rod 1. The magnetic pole pull rod 1 serves as the main connecting component, playing the role of transmitting force and fixing other parts. Multiple buffer grooves 9 are equidistantly opened on the front side of the magnetic pole pull rod 1. The buffer grooves 9 provide an installation space for the springs 10. One side of the inner part of each of the multiple buffer grooves 9 is fixedly connected with a spring 10. The spring 10 is used to play a buffering role during the operation of the generator. The front ends of the multiple springs 10 are fixedly connected with the same moving plate 11. The moving plate 11 disperses and absorbs the impact force under the action of the spring 10. A limit groove 12 is opened on the rear side of the pull rod head 6. The limit groove 12 is used for sliding connection with the moving plate 11 to assist in positioning and restricting the moving direction. A magnetic pole punching plate 13 is slidably connected to the outer wall of the magnetic pole pull rod 1. The magnetic pole punching plate 13 is used to form a magnetic field in the generator. A round hole 14 is opened on the front side of the magnetic pole punching plate 13. The round hole 14 allows the magnetic pole pull rod 1 to slide therein to facilitate the installation and positioning of the magnetic pole punching plate 13. Multiple positioning holes 15 are equidistantly opened on the front side of the magnetic pole punching plate 13. The positioning holes 15 are used for connecting or fixing with other components to ensure the accurate position of the magnetic pole punching plate 13. The sizes of the multiple positioning holes 15 are the same to facilitate standardized installation and maintenance;
[0042] Specifically, the spring 10 in the buffer groove 9 can play a buffering role, reducing the influence of the impact force on the connection part of the magnetic pole pull rod 1 and the pull rod head 6. Under the action of the spring 10, the moving plate 11 can move in the buffer groove 9, thereby dispersing and absorbing the impact force, improving the stability and reliability of the entire structure, restricting the moving direction of the moving plate 11 to ensure the effectiveness of the buffering effect, and also playing an auxiliary positioning role when connecting the pull rod head 6 and the magnetic pole pull rod 1.
[0043] Refer to Figure 1 、 Figure 2 and Figure 3, including a magnetic pole pull rod 1 that slides inside a round hole 14, enabling the magnetic pole punching sheet 13 to move relative to the magnetic pole pull rod 1 for convenient installation and positioning. The size of the magnetic pole pull rod 1 is consistent with that of the round hole 14 to ensure a tight fit between the magnetic pole punching sheet 13 and the magnetic pole pull rod 1. The rear side of the moving plate 11 is respectively slidably connected inside the corresponding buffer groove 9, enabling the moving plate 11 to move within the buffer groove 9 to achieve a buffering function. The size of the rear side of the moving plate 11 matches that of the buffer groove 9 to ensure stable movement of the moving plate 11 within the buffer groove 9. Multiple buckles 7 slide inside the corresponding grooves 2, facilitating the quick insertion of the buckles 7 into the grooves 2 when connecting the pull rod head 6 to the magnetic pole pull rod 1 for preliminary positioning. One end of each of the multiple limit bolts 5 passes through the corresponding limit holes 8 to enhance the stability of the connection between the pull rod head 6 and the magnetic pole pull rod 1;
[0044] Specifically, the size of the round hole 14 is consistent with that of the magnetic pole pull rod 1, enabling the magnetic pole pull rod 1 to slide therein, thus facilitating the installation and positioning of the magnetic pole punching sheet 13 on the magnetic pole pull rod 1. Multiple positioning holes 15 can be used for connection or fixation with other components to ensure the accurate position of the magnetic pole punching sheet 13 in the generator. The same-sized positioning holes 15 facilitate standardized installation and maintenance. To achieve the quick connection and preliminary positioning of the pull rod head 6 and the magnetic pole pull rod 1, after the limit bolts 5 pass through the limit holes 8, the stability of the connection is further enhanced, preventing loosening or detachment of the pull rod head 6 and the magnetic pole pull rod 1 during the operation of the generator.
[0045] Working principle: The magnetic pole pull rod 1 serves as the main connecting component, playing the role of transmitting force and fixing other parts. The grooves 2 equidistantly arranged at the front end of the magnetic pole pull rod 1 provide installation positions for the buckles 7 on the rear side of the pull rod head 6. When it is necessary to connect the pull rod head 6 to the magnetic pole pull rod 1, insert the buckles 7 on the rear side of the pull rod head 6 into the corresponding grooves 2. At this time, since one side of the inside of the multiple grooves 2 is connected to the card slots 3, the buckles 7 can smoothly slide into the card slots 3 for preliminary positioning. Then, by rotating the limit bolts 5 arranged in the multiple round grooves 4 equidistantly opened at the front end of the outer wall of the magnetic pole pull rod 1, one end of the limit bolts 5 passes through the corresponding card slots 3, and the limit holes 8 opened on one side of the buckles 7 just correspond to the limit bolts 5. After the limit bolts 5 pass through the limit holes 8, the fixation of the buckles 7 is achieved, thereby firmly connecting the pull rod head 6 to the magnetic pole pull rod 1.
[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A rotor pole tie rod structure of a large synchronous generator, comprising a pole tie rod (1), characterized in that: The front end of the magnetic pole pull rod (1) is equidistantly provided with grooves (2), and one side of the interior of each of the multiple grooves (2) is communicated with a clamping groove (3). The outer wall of the front end of the magnetic pole pull rod (1) is equidistantly provided with a plurality of circular grooves (4). One side of the interior of each of the multiple circular grooves (4) is rotatably connected with a limit bolt (5). One end of each of the multiple limit bolts (5) respectively penetrates through the corresponding clamping groove (3). A pull rod head (6) is arranged on the front side of the magnetic pole pull rod (1). A plurality of buckles (7) are fixedly connected to the rear side of the pull rod head (6) at equal intervals. A limit hole (8) is provided on one side of each of the multiple buckles (7).
2. The structure of the rotor pole tie rod of a large synchronous generator according to claim 1, characterized in that: A plurality of buffer grooves (9) are equidistantly provided on the front side of the magnetic pole pull rod (1). One side of the interior of each of the multiple buffer grooves (9) is fixedly connected with a spring (10). The front ends of the multiple springs (10) are fixedly connected to the same moving plate (11).
3. A large synchronous generator rotor pole tie rod structure according to claim 1, characterized in that: A limit groove (12) is provided on the rear side of the pull rod head (6). The limit groove (12) is slidably connected with the moving plate (11).
4. A large synchronous generator rotor pole tie rod structure according to claim 1, characterized in that: A magnetic pole punching plate (13) is slidably connected to the outer wall of the magnetic pole pull rod (1). A round hole (14) is provided on the front side of the magnetic pole punching plate (13).
5. A large synchronous generator rotor pole tie rod structure according to claim 4, characterized in that: A plurality of positioning holes (15) are equidistantly provided on the front side of the magnetic pole punching plate (13). The sizes of the multiple positioning holes (15) are the same.
6. The structure of the rotor pole tie rod of a large synchronous generator according to claim 1, wherein: The magnetic pole pull rod (1) slides inside the round hole (14), and the sizes of the magnetic pole pull rod (1) and the round hole (14) are the same.
7. A large synchronous generator rotor pole tie rod structure according to claim 2, characterized in that: The rear side of the moving plate (11) is respectively slidably connected inside the corresponding buffer groove (9), and the rear side of the moving plate (type="main") is matched with the size of the buffer groove (9).
8. A structure of a rotor pole pull rod of a large synchronous generator according to claim 1, characterized in that: The multiple buckles (7) slide inside the corresponding grooves (2), and one end of each of the multiple limit bolts (5) penetrates through the corresponding limit hole (8).