Adjusting device for magnetic pole of generator
Patent Information
- Application Number
- CN202420665943.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The prior art methods used for magnetic pole adjustment in hydropower plants have problems such as high material cost, low efficiency, large tooling volume and unfavorable storage. The force applied by the Qianjin Top cannot be effectively transmitted to the magnetic pole, resulting in loosening of the magnetic pole and mechanical Risk of accidents.
Using a combination device of I-beam, connecting plate and jack, the spacing is adjusted by the jack between the I-beam and the tenon, the bending stress of the I-beam is used to correct the magnetic pole, and the number and position of the connecting plate and jack are adjusted to improve the application. Avoid wear of jacks and tenons.
It realizes efficient leveling of magnetic poles, reduces material costs, improves efficiency, and is easy to store, while enhancing the applicability and safety of the device, avoiding mechanical accidents caused by loose magnetic poles.
Smart Images
Figure CN222147366U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a generator magnetic pole adjustment device, which is applicable to the technical field of generator monitoring equipment. Background Art
[0002] As an important part of the rotor of the generator set, the magnetic pole is a component that generates a magnetic field. It is installed on the rotor yoke. The magnetic pole is positioned and installed on the yoke through the tenon on the magnetic pole and the tenon groove on the yoke, and is fixed on the yoke through the magnetic pole key. The straightness of the magnetic pole core determines the assembly quality of the rotor. Since the magnetic pole will be subjected to huge centrifugal force when the rotor rotates at high speed, if the straightness of the magnetic pole does not meet the requirements, the tenon cannot firmly fix the magnetic pole on the rotor yoke, and the magnetic pole is prone to loosening during the long-term operation of the unit, which will cause major mechanical accidents.
[0003] During the installation and maintenance of the rotors of various hydropower plants, the poles often need to be adjusted due to deformation. At present, the straightness of the pole core of the hydro-turbine generator rotor is checked with a ruler before installation. When the poles are deformed, a door-shaped frame is usually welded on a steel platform and the poles are placed in the door-shaped frame for correction. The method for checking the straightness of the pole core is as follows: a steel ruler greater than the length of the pole is placed against the surface of the pole core, and a feeler gauge is used to check the gap between the ruler and the pole core. When the gap between the pole core and the steel ruler is found to be greater than 1 mm, the pole core needs to be corrected.
[0004] This method has the following problems: 1. It needs to make a relatively large steel platform and door-shaped frame, which is costly and inefficient. 2. The door-shaped frame is large and the top of the door-shaped frame is easily deformed after the jack is stressed, and the force applied by the jack cannot be effectively transmitted to the magnetic pole. 3. The tooling is large in size and is not conducive to storage. Utility Model Content
[0005] The technical problem to be solved by the utility model is: in order to solve the above technical problem, the utility model provides a device for adjusting the magnetic poles of a generator.
[0006] The technical solution adopted by the utility model is: a device for adjusting the magnetic poles of a generator, characterized in that: it has an I-beam and at least one connecting plate, a first mounting hole matching the I-beam is formed on the first end of the connecting plate, a second mounting hole matching the tenon on the magnetic pole of the generator is formed on the second end of the connecting plate, and a jack is arranged between the I-beam installed on the connecting plate and the tenon. In this way, the connecting plate is synchronously mounted on the I-beam and the tenon, which facilitates the positioning and installation of the I-beam and the magnetic poles of the generator, and the spacing between the I-beam and the tenon is adjusted by arranging the jack between the I-beam and the tenon and operating it, because the wing plate of the I-beam can withstand greater bending stress, it is convenient to correct the magnetic poles of the generator; according to actual conditions, by adjusting the number and position of the connecting plate and the jack installed between the I-beam and the tenon, it is convenient to make corresponding adjustments to the adjusting device, thereby improving the applicability of the adjusting device.
[0007] A shim is arranged between the jack and the tenon, so that when the jack is running and the magnetic pole is leveled, the shim can prevent the jack and the tenon from being worn.
[0008] The beneficial effects of the utility model are as follows: the utility model arranges an I-beam and a connecting plate, and the two ends of the connecting plate can be respectively mounted on the I-beam and the tenon, so that the I-beam and the connecting plate are positioned by the connecting plate; the utility model arranges a jack between the I-beam and the connecting plate, and when the jack is running, the wing plate of the I-beam can withstand a large bending stress, thereby facilitating the correction of the magnetic pole of the generator; the utility model facilitates the adjustment of the number and position of the connecting plates and the jacks installed between the I-beam and the tenon according to the actual use scenario, facilitates the corresponding adjustment of the adjustment device, and improves the applicability of the adjustment device; the adjustment device is spliced, and after use, it is convenient to remove the connecting plate from the I-beam and the tenon, and facilitates the storage of the adjustment device. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 : A front view of the utility model.
[0010] Figure 2 : A side view of the utility model.
[0011] In the figure: 1. I-beam; 2. Jack; 3. Connecting plate; 4. Pad; 5. Generator pole; 6. Tenon. DETAILED DESCRIPTION
[0012] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.
[0013] This embodiment is a generator magnetic pole adjustment device, which is used to adjust the generator magnetic pole 5 so that the contact surface between the magnetic pole tenon 6 and the magnetic yoke is straight.
[0014] In this embodiment, there are an I-beam 1 and at least one connecting plate 3, wherein a first mounting hole matching the I-beam 1 is formed on one end of the connecting plate 3, and a second mounting hole matching the tenon 6 on the generator pole 5 is formed on the second end of the connecting plate 3. In this way, the same connecting plate 3 is mounted on the tenon 6 of the I-beam 1 and the generator pole 5, so that the I-beam 1 and the generator pole 5 are connected by the connecting plate 3. At this time, the jack 2 is arranged between the I-beam 1 and the tenon 6 of the generator pole 5. By running the jack 2, the distance between the I-beam 1 and the generator pole 5 can be adjusted under the action of the connecting plate 3, because the wing plate of the I-beam 1 can withstand a large bending stress, so it is convenient to level the generator pole 5.
[0015] In this embodiment, by adjusting the number and position of the connecting plates 3 and the jacks 2 installed between the I-beam 1 and the tenon 6, the adjustment device can be adjusted accordingly, thereby improving the applicability of the adjustment device. In addition, because the I-beam 1, the connecting plates 3 and the tenon 6 are all spliced together, the adjustment device can be easily disassembled, assembled and stored.
[0016] In this embodiment, a shim plate 4 is arranged between the jack 2 and the tenon 6. In this way, when the jack 2 is running and the magnetic pole is leveled, the shim plate 4 can prevent wear and tear between the jack 2 and the tenon 6.
[0017] In this embodiment, the method of installing the adjustment device on the generator magnetic pole 5 and correcting the generator magnetic pole 5 is:
[0018] Before correction, mark the pole core of the generator pole 5 according to the inspection results of the ruler;
[0019] Install the connecting plate 3, I-beam 1 and jack 2 at the corresponding positions on the pole core according to the marks on the pole core, and start the jack 1 to correct the generator pole 5;
[0020] After the correction work of the adjustment device is completed, the pole shaping tooling is removed, the gap on the pole surface is checked again with a straight ruler, and a feeler gauge is used to check between the straight ruler and the pole core. When the gap between the straight ruler and the pole core obtained by the straight ruler is less than 1mm and the gap between the straight ruler and the pole core obtained by the feeler gauge is 0, the shaping is qualified.
[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A device for adjusting the magnetic poles of a generator, characterized in that: The invention comprises an I-beam (1) and at least one connecting plate (3); a first mounting hole matching the I-beam (1) is formed on the first end of the connecting plate (3); a second mounting hole matching the tenon (6) on the magnetic pole (5) of the generator is formed on the second end of the connecting plate (3); and a jack (2) is arranged between the I-beam (1) mounted on the connecting plate (3) and the tenon (6).
2. The generator magnetic pole adjustment device according to claim 1, characterized in that: A backing plate (4) is arranged between the jack (2) and the tenon (6).