Magnetic type dustproof protection device and method for collector ring carbon brush of large generator
By adopting magnetic dust protection devices on large generators, the dust protection problems of current collector rings, carbon brushes and other equipment are solved, and a more comprehensive dust protection coverage and a more stable operating environment are achieved.
Patent Information
- Application Number
- CN202510143637.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-03-28
AI Technical Summary
In the prior art, the dust protection effect of heavy-pressure equipment such as the slip ring chamber of the generator is poor, resulting in equipment pollution and excessive temperature, which affects the normal operation of the generator.
A large generator current collecting ring carbon brush magnetic dust protection device is adopted. The device includes an upper and lower dust cover, which is fixed to the periphery of the rotating shaft and the collecting ring through a magnetic suction structure, and the connecting part covers the connection area between the rotating shaft and the collecting ring to form a more comprehensive dust protection coverage.
It effectively reduces external dust entering the generator, improves the dustproof effect of the current collector ring and carbon brush, avoids equipment pollution and excessive temperature problems, and ensures the safe and stable operation of the generator for a long period of time.
Smart Images
Figure CN119727198A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of dust prevention and protection of carbon brushes at a collector ring of a generator, and in particular to a magnetic dust prevention and protection device and method for carbon brushes at a collector ring of a large generator. Background Art
[0002] In the power system, the slip ring room of a large generator is equipped with important equipment such as rotating shafts, collector rings, conductive plates, carbon brushes, pole leads, excitation cables, and various sensors. Usually, during maintenance work, it is necessary to clean important equipment such as collector rings and carbon brushes to ensure the safe and stable operation of the equipment in the generator slip ring room. After the collector rings and carbon brushes are cleaned, there are often other teams or other slip ring rooms that need to be polished and painted. Due to the large number of equipment inside the slip ring room and the complex and irregular structure, plastic film is usually used for protection, which not only wastes time, manpower, and material resources, but also has incomplete protection, is easy to fall off, and has poor protection effect. Collector rings and carbon brushes are usually contaminated. When paint powder adheres to the surface of collector rings and carbon brushes, the surface becomes unclean. When the temperature of collector rings and carbon brushes reaches above 80°C during operation, it may cause the local temperature of collector rings and carbon brushes to be too high, seriously affecting the normal operation of large generator sets.
[0003] It can be seen that the dustproof structure of the current collector ring carbon brush still has room for improvement. It should be optimized to improve the dustproof effect of the dustproof structure, facilitate operation, reduce environmental pollution, and maintain the safe and stable operation and service life of the collector ring. Therefore, it is necessary to propose a more reasonable technical solution to solve the technical problems existing in the existing technology. Summary of the invention
[0004] The present invention proposes a magnetic dust protection device and method for the collector ring carbon brush of a large generator, which solves the dust protection problem of the collector ring, carbon brush and other heavy pressure equipment in the generator slip ring chamber proposed in the above background technology, and solves the problems of the original method of using plastic film for dust protection, wasting time, manpower and material resources, incomplete protection, easy to fall off, and poor protection effect. It is used to improve work efficiency, enhance the protection of the collector ring carbon brush of the slip ring chamber, reduce environmental pollution caused by the use of disposable plastic film, and avoid secondary pollution of equipment after cleaning, so as to ensure the long-term safe and stable operation of large generators.
[0005] In order to achieve the above-mentioned purpose, the protective device disclosed in the present invention can adopt the following technical solutions:
[0006] A magnetic dust protection device for a collector ring and carbon brush of a large generator comprises an upper dust cover and a lower dust cover, wherein the inner diameter enclosed by the upper dust cover is smaller than the inner diameter enclosed by the lower dust cover, and a connecting portion is provided between the upper dust cover and the lower dust cover; the upper dust cover is provided with an upper magnetic structure for adsorbing and fitting the upper dust cover to the periphery of a rotating shaft fixing area of a generator structure; the lower dust cover is provided with a lower magnetic structure for adsorbing and fitting the lower dust cover to the collector ring and the periphery of a carbon brush of the generator structure; the connecting portion is used to cover the connecting area between the rotating shaft and the collector ring.
[0007] The dust protection device disclosed above can wrap the outer side of the rotating shaft through the upper dust cover cooperating with the rotating shaft fixing part of the generator structure to prevent external dust and impurities from entering the rotating shaft gap; wrap the area where the collector ring and the brush are located through the lower dust cover to prevent dust from entering the area, and at the same time, the area where the rotating shaft and the collector ring are located is covered through the connecting part, which is horizontally arranged to close the area between the upper dust cover and the lower dust cover.
[0008] Furthermore, for the convenience of observation, the upper dust cover and the lower dust cover need to be visible, and their structures are not limited to a single one. Here, an optimization is made and one of the feasible options is proposed: the upper dust cover and the lower dust cover are made of transparent protective cloth. When the above solution is adopted, the internal structure and operation status can be observed through the transparent protective cloth. In some other solutions, an observation window structure can also be set on the upper dust cover and the lower dust cover.
[0009] Furthermore, the structure of the connecting part can adopt a variety of schemes, and its structure is not limited to a single one. Here, it is optimized and one of the feasible options is proposed: the connecting part includes a horizontally arranged connecting cloth, the inner edge of the connecting cloth is connected and fixed to the upper dust cover, and the outer edge of the connecting cloth is connected and matched with the lower dust cover and is provided with a fixed connection position and a plurality of magnetic connection positions. When the above scheme is adopted, the connecting part is unfolded into a ring shape, and after unfolding, it is an arc shape. The inner edge of the arc is connected to the upper dust cover, and the outer edge of the arc is connected to at least one place of the lower dust cover. When enclosed, the upper dust cover and the lower dust cover both form a cylindrical structure, and the connecting part forms a horizontal ring structure.
[0010] Furthermore, the connecting cloth provides horizontal dust protection, and needs to ensure certain protection performance to prevent hard objects from damaging the structure of the shaft and the collector ring. Therefore, its structure is not limited to a single one. Here, it is optimized and one of the feasible options is proposed: a plurality of reinforcing plates are attached to the connecting cloth. When the above solution is adopted, the reinforcing plates are insulating plates, which are evenly spaced along the circumference of the connecting cloth.
[0011] Furthermore, the upper magnetic structure is used to assist in fixing the upper dust cover, and its structure is not limited to a single one. Here, an optimization is made and one of the feasible options is proposed: the upper magnetic structure includes a magnetic bag connected to the upper dust cover, and the magnetic bag is used to be adsorbed and attached to the generator structure. When the above solution is adopted, the magnetic bag and the upper dust cover can be sewn, connected by buttons, or integrally formed.
[0012] Furthermore, the lower magnetic part is used to assist in fixing the lower dust cover, and its structure is not limited to a single one. Here, an optimization is made and one of the feasible options is proposed: the lower magnetic structure includes a magnetic bag connected to the lower dust cover, and the magnetic bag is used to be adsorbed and attached to the generator structure. When the above solution is adopted, the magnetic bag and the lower dust cover can be sewn, connected by buttons, or integrally formed.
[0013] Furthermore, the magnetic bag is used to place magnetic materials and can be arranged in a variety of ways. Its structure is not limited to a single one. Here, an optimization is made and one of the feasible options is proposed: the magnetic bags are arranged continuously to form a long strip of bag cavity, and a number of magnets are arranged at intervals in the bag cavity; when the upper dust cover or the lower dust cover surrounds and fits the generator structure, the bag cavity forms an annular cavity. When the above scheme is adopted, a number of small card bags can be arranged in the bag cavity to respectively set the magnets. In some other schemes, the magnetic bag can also be set as an openable structure to facilitate the removal and placement of magnets.
[0014] Furthermore, in more schemes, the magnetic suction bag can be arranged in other ways, and its structure is not limited to a single one. Here, an optimization is made and one of the feasible options is proposed: the magnetic suction bags are arranged at intervals, and each magnetic suction bag is provided with a magnet; when the upper dust cover or the lower dust cover surrounds and fits the generator structure, the magnetic suction bags are evenly spaced along the circumference. When the above scheme is adopted, a magnet is provided in each magnetic suction bag.
[0015] Furthermore, in order to more easily match the protective dustproof device with the generator structure, an optimization is performed here, and one feasible option is proposed: the upper dust cover, the lower dust cover and the connecting part all include a flat cloth surface, and corresponding connecting pieces are arranged on both sides of the cloth surface. When the upper dust cover, the lower dust cover and the connecting part are covered on the generator structure, the connecting pieces on both sides of the cloth surface are matched and connected. When the above solution is adopted, the connecting piece can be Velcro, buckle, hanging buckle, etc.
[0016] The above content discloses a dust protection device, and the present invention also discloses a dust protection method as follows:
[0017] A magnetic dust protection method for carbon brushes of collector rings of large generators adopts the dust protection device described above.
[0018] Compared with the prior art, some beneficial effects of the technical solution disclosed in the present invention include:
[0019] In the present invention, a dustproof protection device is used to cover and protect the shaft, collector ring and carbon brush parts of the generator, thereby reducing the entry of external dust and impurities, thereby ensuring a clean environment inside the generator; at the same time, the dustproof protection device in the present invention has a more complete coverage area, cooperates more closely with the generator, and has a more stable and reliable dustproof effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 It is an overall schematic diagram of the dust protection device.
[0022] Figure 2 Schematic diagram of the expanded structure of the dust protection device.
[0023] Figure 3 This is another structural schematic diagram of a dust protection device, in which a reinforcement plate is provided.
[0024] In the above drawings, the meanings of the symbols are as follows:
[0025] 1. Upper dust cover; 2. Connecting part; 3. Lower dust cover; 4. Magnetic bag; 5. Magnet; 6. Connector; 7. Reinforcement plate. DETAILED DESCRIPTION
[0026] The present embodiment is further explained below in conjunction with the accompanying drawings and specific embodiments.
[0027] In view of the fact that the dust prevention effect of the existing generator is not ideal and cleaning is labor-intensive, the following embodiments provide a dust protection device to overcome the defects in the prior art.
[0028] Example 1
[0029] like Figure 1 to Figure 3As shown, the present embodiment is a magnetic dust protection device for a large generator collector ring and carbon brush, comprising an upper dust cover 1 and a lower dust cover 3. The inner diameter enclosed by the upper dust cover 1 is smaller than the inner diameter enclosed by the lower dust cover 3, and a connecting portion 2 is provided between the upper dust cover 1 and the lower dust cover 3; the upper dust cover 1 is provided with an upper magnetic structure for adsorbing and fitting the upper dust cover 1 to the periphery of the rotating shaft fixing area of the generator structure; the lower dust cover 3 is provided with a lower magnetic structure for adsorbing and fitting the lower dust cover 3 to the collector ring and the periphery of the carbon brush of the generator structure; the connecting portion 2 is used to cover the connecting area between the rotating shaft and the collector ring.
[0030] The dust protection device disclosed in this embodiment can wrap the outer side of the shaft through the upper dust cover 1 cooperating with the shaft fixing part of the generator structure to prevent external dust and impurities from entering the shaft gap; wrap the area where the collector ring and the brush are located through the lower dust cover 3 to prevent dust from entering the area, and at the same time, the area where the shaft and the collector ring are located is covered through the connecting part 2, and the connecting part 2 is horizontally arranged to close the area between the upper dust cover 1 and the lower dust cover 3.
[0031] For the convenience of observation, the upper dust cover 1 and the lower dust cover 3 need to be visible, and their structures are not limited to the only one. This embodiment is optimized and adopts one of the feasible options: the upper dust cover 1 and the lower dust cover 3 are made of transparent protective cloth. When the above solution is adopted, the internal structure and operation status can be observed through the transparent protective cloth. In some other solutions, an observation window structure can also be set on the upper dust cover 1 and the lower dust cover 3.
[0032] The structure of the connecting portion 2 can adopt a variety of schemes, and its structure is not limited to a single one. This embodiment is optimized and adopts one of the feasible options: the connecting portion 2 includes a horizontally arranged connecting cloth, the inner edge of the connecting cloth is connected and fixed to the upper dust cover 1, and the outer edge of the connecting cloth is connected and matched with the lower dust cover 3 and is provided with a fixed connection position and several magnetic connection positions. When the above scheme is adopted, the connecting portion 2 is unfolded into a ring shape, and after unfolding, it is an arc shape. The inner edge of the arc is connected to the upper dust cover 1, and the outer edge of the arc is connected to at least one of the lower dust cover 3. When enclosed, the upper dust cover 1 and the lower dust cover 3 both form a cylindrical structure, and the connecting portion 2 forms a horizontal ring structure.
[0033] The connecting cloth provides horizontal dust protection, and needs to ensure certain protection performance to prevent hard objects from damaging the structure of the shaft and the collector ring. Therefore, its structure is not limited to a single one. This embodiment optimizes and adopts one of the feasible options: a plurality of reinforcing plates 7 are attached to the connecting cloth. When the above solution is adopted, the reinforcing plates 7 are insulating plates, which are evenly spaced along the circumference of the connecting cloth.
[0034] Preferably, the insulating plate is made of a hard rubber plate and is bonded to the connecting cloth.
[0035] The upper magnetic structure is used to assist in fixing the upper dust cover 1. Its structure is not limited to a single one. This embodiment is optimized and adopts one of the feasible options: the upper magnetic structure includes a magnetic bag 4 connected to the upper dust cover 1, and the magnetic bag 4 is used to be adsorbed and attached to the generator structure. When the above solution is adopted, the magnetic bag 4 and the upper dust cover 1 can be sewed, connected by buttons, or integrally formed.
[0036] The lower magnetic part is used to assist in fixing the lower dust cover 3, and its structure is not limited to the only one. This embodiment is optimized and adopts one of the feasible options: the lower magnetic structure includes a magnetic bag 4 connected to the lower dust cover 3, and the magnetic bag 4 is used to be adsorbed and attached to the generator structure. When the above solution is adopted, the magnetic bag 4 and the lower dust cover 3 can be sewed, connected by buttons, or integrally formed.
[0037] The magnetic bag 4 is used to place magnetic materials and can be arranged in a variety of ways. Its structure is not limited to a single one. This embodiment is optimized and adopts one of the feasible options: the magnetic bags 4 are arranged continuously to form a long strip of bag cavity, and a plurality of magnets 5 are arranged at intervals in the bag cavity; when the upper dust cover 1 or the lower dust cover 3 surrounds and fits the generator structure, the bag cavity forms an annular cavity. When the above scheme is adopted, a plurality of small card bags can be arranged in the bag cavity to respectively arrange the magnets 5. In some other schemes, the magnetic bag 4 can also be set as an openable structure to facilitate the removal and placement of the magnets 5.
[0038] In more schemes, the magnetic bag 4 can be arranged in other ways, and its structure is not limited to the only one. This embodiment optimizes and adopts one of the feasible options: the magnetic bags 4 are arranged at intervals, and each magnetic bag 4 is provided with a magnet 5; when the upper dust cover 1 or the lower dust cover 3 surrounds and fits the generator structure, the magnetic bags 4 are evenly spaced along the circumference. When the above scheme is adopted, a magnet 5 is provided in each magnetic bag 4.
[0039] In order to more easily match the protective dustproof device with the generator structure, this embodiment is optimized and adopts one of the feasible options: the upper dust cover 1, the lower dust cover 3 and the connecting part 2 all include a flat cloth surface, and corresponding connecting pieces 6 are arranged on both sides of the cloth surface. When the upper dust cover 1, the lower dust cover 3 and the connecting part 2 are covered on the generator structure, the connecting pieces 6 on both sides of the cloth surface are matched and connected. When the above solution is adopted, the connecting piece 6 can be a Velcro, a buckle, a hook, etc.
[0040] Example 2
[0041] The content of the above embodiment 1 discloses a dust protection device, and this embodiment also discloses a dust protection method, as follows:
[0042] A magnetic dust protection method for carbon brushes of collector rings of large generators adopts the dust protection device described above.
[0043] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various implementation methods under the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the protection scope of this embodiment. The protection scope of this embodiment should be based on the definition in the claims.
Claims
1. A magnetic dust protection device for carbon brushes of collector rings of large generators, characterized in that: The invention comprises an upper dust cover (1) and a lower dust cover (3); the inner diameter of the upper dust cover (1) is smaller than the inner diameter of the lower dust cover (3); a connecting portion (2) is arranged between the upper dust cover (1) and the lower dust cover (3); the upper dust cover (1) is provided with an upper magnetic attraction structure for adsorbing and fitting the upper dust cover (1) to the periphery of the rotating shaft fixing area of the generator structure; the lower dust cover (3) is provided with a lower magnetic attraction structure for adsorbing and fitting the lower dust cover (3) to the periphery of the collector ring and the carbon brush of the generator structure; the connecting portion (2) is used to cover the connecting area between the rotating shaft and the collector ring.
2. According to claim 1, the magnetic dust protection device for the collector ring carbon brush of a large generator is characterized by: The upper dust cover (1) and the lower dust cover (3) are made of transparent protective cloth.
3. The magnetic dust protection device for the collector ring carbon brush of a large generator according to claim 1 is characterized in that: The connecting portion (2) comprises a horizontally arranged connecting cloth, the inner edge of the connecting cloth is connected and fixed to the upper dust cover (1), the outer edge of the connecting cloth is connected and matched to the lower dust cover (3) and is provided with a fixed connection position and a plurality of magnetic connection positions.
4. The magnetic dust protection device for the collector ring carbon brush of a large generator according to claim 3 is characterized by: A plurality of reinforcing plates (7) are fitted on the connecting cloth.
5. The magnetic dust protection device for the collector ring carbon brush of a large generator according to claim 1 is characterized in that: The upper magnetic attraction structure comprises a magnetic attraction bag (4) connected to the upper dust cover (1), and the magnetic attraction bag (4) is used for adsorbing and fitting onto the generator structure.
6. The magnetic dust protection device for carbon brushes of large generator collector rings according to claim 1 is characterized in that: The lower magnetic attraction structure comprises a magnetic attraction bag (4) connected to the lower dust cover (3), and the magnetic attraction bag (4) is used for adsorbing and fitting onto the generator structure.
7. The magnetic dust protection device for the collector ring carbon brush of a large generator according to claim 5 or 6, characterized in that: The magnetic suction bags (4) are arranged continuously to form a long strip-shaped bag cavity, and a plurality of magnets (5) are arranged at intervals in the bag cavity; when the upper dust cover (1) or the lower dust cover (3) surrounds and fits the generator structure, the bag cavity forms an annular cavity.
8. The magnetic dust protection device for the collector ring carbon brush of a large generator according to claim 5 or 6, characterized in that: The magnetic bags (4) are arranged at intervals, and each magnetic bag (4) is provided with a magnet (5); when the upper dust cover (1) or the lower dust cover (3) surrounds and fits the generator structure, the magnetic bags (4) are evenly spaced along the circumference.
9. The magnetic dust protection device for carbon brushes of large generator collector rings according to claim 1 is characterized by: The upper dust cover (1), the lower dust cover (3) and the connecting part (2) all include a flat cloth surface, and corresponding connecting pieces (6) are arranged on both side edges of the cloth surface. When the upper dust cover (1), the lower dust cover (3) and the connecting part (2) are covered on the generator structure, the connecting pieces (6) on both sides of the cloth surface are matched and connected.
10. A magnetic dust protection method for carbon brushes of collector rings of large generators, characterized in that: A dust protection device according to any one of claims 1 to 9 is used.