CN109921526B - Magnetic yoke structure of annular forging of generating motor - Google Patents
Magnetic yoke structure of annular forging of generating motor Download PDFInfo
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- CN109921526B CN109921526B CN201910311759.4A CN201910311759A CN109921526B CN 109921526 B CN109921526 B CN 109921526B CN 201910311759 A CN201910311759 A CN 201910311759A CN 109921526 B CN109921526 B CN 109921526B
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Abstract
The invention aims to disclose a magnetic yoke structure of an annular forged piece of a generating motor, which consists of a first section of magnetic yoke, a middle section of magnetic yoke, a tail section of magnetic yoke, an upper air deflector, a lower air deflector, a brake ring, a magnetic yoke tensioning screw and a nut, wherein each section of magnetic yoke is forged by a forged piece, the thickness of each section of magnetic yoke is consistent, and the problems of staggered teeth, overlapping gaps and the like of the magnetic yoke sections can be avoided; the upper air deflector and the lower air deflector are welded in the polygonal grooves of the magnet yoke sections, and the air deflectors on each layer are limited through rabbets; the magnetic yoke tensioning screw rod sequentially penetrates through the first section of magnetic yoke, the middle section of magnetic yoke, the last section of magnetic yoke and the brake ring from top to bottom, and two sides of the magnetic yoke tensioning screw rod are fixed through nuts, so that an integral magnetic yoke is formed; according to the structure, the connecting bolt, the pin and the bolt locking part are not arranged in each magnetic yoke section, so that the potential safety hazard of the rotating part connecting piece is reduced, the installation is simple, and the safety and reliability are greatly improved.
Description
Technical Field
The invention relates to the field of generating motors, in particular to a magnetic yoke structure of an annular forging of a generating motor.
Background
With the continuous improvement of the technical level of the domestic generating motor, the magnetic yokes of the generating motor with large capacity and high rotation speed mostly adopt an annular thick steel plate laminating structure, each section of the magnetic yokes adopts a plurality of full-circle thick steel plates for laminating and are connected into a whole through bolts. However, the steel plate laminated yoke has the defects of complex manufacturing process, low material utilization rate, longer manufacturing period, gaps among steel plates of each yoke section and the like. In order to solve the problems and further improve the quality of the rigid magnetic yoke, the invention adopts the annular forged piece magnetic yoke to replace an annular thick steel plate laminated magnetic yoke.
Disclosure of Invention
The invention aims to disclose a magnetic yoke structure of an annular forging of a generator motor, which has the characteristics of no gap in a magnetic yoke section, short manufacturing period, simple structure, convenience in installation, safety, reliability and the like. The technical scheme is as follows: the magnetic yoke brake device is composed of a first-section magnetic yoke (1), a middle-section magnetic yoke (2), a last-section magnetic yoke (3), a lower air deflector (4), an upper air deflector (5), a brake ring (6), a magnetic yoke tensioning screw rod (7) and a nut (8); a lower air deflector (4) is welded on a lower plane A of a first-section magnetic yoke (1), an upper plane B and a lower plane C of a middle-section magnetic yoke (2) are respectively welded with an upper air deflector (5) and a lower air deflector (4), an upper plane D of a last-section magnetic yoke (3) is welded with the upper air deflector (5), a sunken spigot (9) is machined in the inner diameter direction of each layer of lower air deflector (4), and a raised spigot (10) is machined in the inner diameter direction of each layer of upper air deflector (5); first section yoke (1), interlude yoke (2), end section yoke (3) are fixed a position through the sunken tang (9) and protruding tang (10) of internal diameter direction after, yoke tensioning screw (7) from the top penetrate first section yoke (1), interlude yoke (2), end section yoke (3), brake ring (6) in proper order, yoke tensioning screw (7) are fixed through nut (8), form whole yoke, yoke external diameter direction is opened there is T tail groove (11), the internal diameter direction is opened there is convex groove (12).
The first section magnetic yoke (1), the middle section magnetic yoke (2) and the last section magnetic yoke (3) are formed by forging a forged piece 18MnCrNiMo in a full circle, and the thickness of each section of magnetic yoke is consistent and consistent with the thickness of each section of entity after the total height of the magnetic yoke of the generator motor is equally divided by the number of the ventilation grooves.
The lower surface A of the first-section magnetic yoke (1), the upper surface D of the last-section magnetic yoke (3), the upper surface B and the lower surface C of the middle-section magnetic yoke (2) are provided with a plurality of polygonal grooves (13) with the same structure, and a boss (14) is reserved in the middle of each polygonal groove (13).
The middle of the upper air deflector (5) and the lower air deflector (4) is provided with a trapezoidal groove (15), the outer diameter direction is provided with a T-shaped tail groove (16), the size of the trapezoidal groove (15) is larger than that of the boss (14), and the size of the T-shaped tail groove (16) is larger than that of the T-shaped tail groove (11) of the magnetic yoke.
Technical effects
1. The annular forging magnet yoke is stacked by replacing a plurality of layers of steel plates with an integral forging, connecting bolts, pins and bolt locking parts in each magnet yoke section are eliminated, and potential safety hazards of rotating part connecting pieces are reduced.
2. The annular forging magnet yoke is formed by stacking a plurality of layers of steel plates instead of a whole forging, so that the problem of staggered teeth and gaps of the magnet yoke section formed by stacking the steel plates can be solved, and the performance of the unit is improved.
3. The magnetic yoke section adopts an annular forging structure, and the problems that the whole large-size thick steel plate in the steel plate stacked magnetic yoke is difficult to purchase, the production period is long and the like can be solved.
4. The air deflectors are welded on the upper plane and the lower plane of the magnetic yoke in the middle section, and the flatness of the upper plane and the lower plane of the magnetic yoke section can be met by processing the air deflectors on the upper plane and the lower plane, so that the verticality and the parallelism of the whole magnetic yoke are ensured, the production period can be shortened, and the purchase weight and the cost of the magnetic yoke section can be reduced.
5. According to the invention, the air deflector firstly lies in the groove of the magnetic yoke section and then is welded, so that the groove has a limiting effect on the air deflector, and the phenomenon that the air deflector is thrown outwards and shifts under extreme working conditions can be prevented.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
FIG. 2 is a schematic top view of FIG. 1
FIG. 3 is a schematic view of the magnet yoke section with a polygonal recess
FIG. 4 is a sectional view of FIG. A-A
FIG. 5 is a schematic view of an air deflector
Reference numbers in the drawings indicate:
1. a first section of magnetic yoke; 2. a middle section magnetic yoke; 3. a last-stage magnetic yoke; 4. a lower air deflector; 5. an upper air deflector; 6. a brake ring; 7. a magnetic yoke tightens the screw; 8. a nut; 9. a sunken seam allowance; 10. a raised seam allowance; 11. a T-shaped tail groove; 12. a convex groove; 13. a polygonal groove; 14. a concave platform; 15. a trapezoidal groove; 16. t-shaped tail groove
Detailed Description
As shown in fig. 1 and 2, the magnetic yoke structure of the annular forging of the generator-motor comprises a first-section magnetic yoke 1, a middle-section magnetic yoke 2, a last-section magnetic yoke 3, a lower air deflector 4, an upper air deflector 5, a brake ring 6, a magnetic yoke tensioning screw 7 and a nut 8; an upper air deflector 5 is welded on the lower plane A of a first-section magnetic yoke 1, an upper plane B and a lower plane C of a middle-section magnetic yoke 2 are respectively welded on the upper air deflector 5 and a lower air deflector 4, an upper plane D of a last-section magnetic yoke 3 is welded on the upper air deflector 5, after welding, a sunken spigot 9 is machined in the inner diameter direction of each layer of lower air deflector 4, and a raised spigot 10 is machined in the inner diameter direction of each layer of upper air deflector 5; after each section yoke section passes through the sunken tang 9 and the protruding tang 10 of internal diameter direction and fixes a position, the taut screw rod 7 of yoke penetrates first section yoke 1, interlude yoke 2, end section yoke 3, brake ring 6 from the top down in proper order, and the taut screw rod 7 of yoke is fixed through nut 8, forms whole yoke, and T tail groove 11 is opened to the yoke external diameter direction, and convex groove 12 is opened to the internal diameter direction.
As shown in fig. 1, the first-stage magnetic yoke 1, the middle-stage magnetic yoke 2 and the last-stage magnetic yoke 3 are forged by 18MnCrNiMo in a full circle, and the thicknesses of the magnetic yokes at all stages are consistent with the thickness of each solid body of the generator motor after the total height of the magnetic yokes is equally divided by the number of the ventilation channels.
As shown in fig. 3 and 4, the lower surface a of the first-stage magnetic yoke 1, the upper surface D of the last-stage magnetic yoke 3, the upper surface B of the middle-stage magnetic yoke 2, and the lower surface C are all provided with a plurality of polygonal grooves 13 having the same structure, a boss 14 is left in the middle of each polygonal groove 13, the positions of the grooves 13 are used for mounting the upper air deflector 5 or the lower air deflector 4, the grooves 13 and the boss 14 have the effect of limiting the seam allowance for the upper air deflector 5 and the lower air deflector 4, and the phenomenon that the displacement occurs between the air deflectors and the magnetic yoke sections due to frequent starting, stopping, forward rotation, and reverse rotation of the generator motor is prevented.
As shown in fig. 5, the upper air deflector 5 and the lower air deflector 4 are provided with a trapezoidal groove 15 in the middle, a T-shaped tail groove 16 is arranged in the outer diameter direction, the size of the trapezoidal groove 15 is slightly larger than that of the boss 14, and the size of the T-shaped tail groove 16 is larger than that of the T-shaped tail groove 11 of the magnetic yoke, so that the upper air deflector 5 and the lower air deflector 4 are not connected with the magnetic pole, and the edge of the T-shaped tail groove 16 can be prevented from being stressed.
Finally, the scope of protection of the invention is not limited to the embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (3)
1. A magnetic yoke structure of an annular forging of a generator motor is characterized by comprising a first-section magnetic yoke (1), a middle-section magnetic yoke (2), a last-section magnetic yoke (3), a lower air deflector (4), an upper air deflector (5), a brake ring (6), a magnetic yoke tensioning screw (7) and a nut (8); a lower air deflector (4) is welded on a lower plane A of a first-section magnetic yoke (1), an upper plane B and a lower plane C of a middle-section magnetic yoke (2) are respectively welded with an upper air deflector (5) and a lower air deflector (4), an upper plane D of a last-section magnetic yoke (3) is welded with the upper air deflector (5), a sunken spigot (9) is machined in the inner diameter direction of each layer of lower air deflector (4), and a raised spigot (10) is machined in the inner diameter direction of each layer of upper air deflector (5); after a first-section magnetic yoke (1), a middle-section magnetic yoke (2) and a last-section magnetic yoke (3) are accurately positioned through a concave spigot (9) and a convex spigot (10) in the inner diameter direction, a magnetic yoke tensioning screw (7) sequentially penetrates through the first-section magnetic yoke (1), the middle-section magnetic yoke (2), the last-section magnetic yoke (3) and a brake ring (6) from top to bottom, the magnetic yoke tensioning screw (7) is fixed through a nut (8) to form an integral magnetic yoke, a T-shaped tail groove (11) is formed in the outer diameter direction of the magnetic yoke, and a convex groove (12) is formed in the inner diameter direction; a plurality of polygonal grooves (13) with the same structure are formed in the lower surface A of the first-section magnetic yoke (1), the upper surface D of the last-section magnetic yoke (3), the upper surface B of the middle-section magnetic yoke (2) and the lower surface C of the first-section magnetic yoke, a boss (14) is reserved in the middle of each polygonal groove (13), and the polygonal grooves (13) and the bosses (14) are used for positioning the lower air deflector (4) and the upper air deflector (5).
2. The annular forged magnet yoke structure of a generator-motor as claimed in claim 1, wherein the first section of magnet yoke (1), the middle section of magnet yoke (2) and the last section of magnet yoke (3) are forged by a forged piece in a full circle, and the thickness of each section of magnet yoke is consistent with the thickness of each solid section of the generator-motor magnet yoke after the total height of the generator-motor magnet yoke is equally divided by the number of the ventilation grooves.
3. The annular forged magnet yoke structure of a generator motor as claimed in claim 1, wherein the upper air deflector (5) and the lower air deflector (4) are provided with a trapezoidal groove (15) in the middle and a T-shaped tail groove (16) in the outer diameter direction, the size of the trapezoidal groove (15) is larger than that of the boss (14), and the size of the T-shaped tail groove (16) is larger than that of the T-shaped tail groove (11) of the magnet yoke.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311759.4A CN109921526B (en) | 2019-04-18 | 2019-04-18 | Magnetic yoke structure of annular forging of generating motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910311759.4A CN109921526B (en) | 2019-04-18 | 2019-04-18 | Magnetic yoke structure of annular forging of generating motor |
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| CN109921526A CN109921526A (en) | 2019-06-21 |
| CN109921526B true CN109921526B (en) | 2020-11-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217304A (en) * | 2020-10-20 | 2021-01-12 | 哈尔滨电机厂有限责任公司 | Guiding and shunting structure of rotor yoke of generator motor |
| DE102020133287B3 (en) | 2020-12-14 | 2022-01-27 | Voith Patent Gmbh | Rotor rim for an electrical machine |
| CN115694010A (en) | 2021-07-28 | 2023-02-03 | 福伊特专利有限公司 | Rotor for an electric machine |
| CN114083229B (en) * | 2021-11-04 | 2022-11-29 | 东芝水电设备（杭州）有限公司 | Method for manufacturing annular thick plate magnet yoke |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752917A (en) * | 2010-01-05 | 2010-06-23 | 昆明电机厂有限公司 | Bracket type solid magnet yoke of water-wheel generator |
| CN102624152A (en) * | 2012-04-25 | 2012-08-01 | 中国船舶重工集团公司第七0四研究所 | Low-noise closed-type cooling system of medium-sized power generator |
| CN109309422A (en) * | 2018-12-14 | 2019-02-05 | 天津市天发重型水电设备制造有限公司 | A kind of polycyclic magnetic yoke structure of segmentation |
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- 2019-04-18 CN CN201910311759.4A patent/CN109921526B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752917A (en) * | 2010-01-05 | 2010-06-23 | 昆明电机厂有限公司 | Bracket type solid magnet yoke of water-wheel generator |
| CN102624152A (en) * | 2012-04-25 | 2012-08-01 | 中国船舶重工集团公司第七0四研究所 | Low-noise closed-type cooling system of medium-sized power generator |
| CN109309422A (en) * | 2018-12-14 | 2019-02-05 | 天津市天发重型水电设备制造有限公司 | A kind of polycyclic magnetic yoke structure of segmentation |
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