CN110890814A - On-site processing method and equipment for generator magnet yoke lamination - Google Patents
On-site processing method and equipment for generator magnet yoke lamination Download PDFInfo
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- CN110890814A CN110890814A CN201911098361.3A CN201911098361A CN110890814A CN 110890814 A CN110890814 A CN 110890814A CN 201911098361 A CN201911098361 A CN 201911098361A CN 110890814 A CN110890814 A CN 110890814A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
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Abstract
The invention discloses a field processing method and equipment for a generator magnet yoke lamination, which mainly comprise an equipment foundation base, wherein a foundation bottom plate and an adjusting block are arranged on the equipment foundation base positioned at two sides of the equipment and used for fixedly installing an axial transmission assembly; and a plurality of basic tensioning assemblies are arranged in grooves on two sides of a rotor magnetic yoke to be processed and used for integrally installing and fixing the equipment. The invention has the beneficial effects that: dangerous accidents possibly caused by dislocation of the magnetic yoke of the generator rotor are effectively avoided, and the generator can be repaired with high precision without lifting the rotor out of a foundation pit of the generator; for a newly-installed generator, the magnetic yoke can be directly processed with high precision on site, so that the technical problem of processing the magnetic yoke is solved; two V-shaped surfaces can be processed simultaneously, and all the processed surfaces can reach the slide precision and the surface quality meeting the magnetic pole installation requirements after the groove to be formed is processed.
Description
Technical Field
The invention relates to the technical field of power generation equipment, in particular to a field processing method and equipment for a generator magnet yoke lamination.
Background
With the rapid development of hydroelectric power generation equipment technology, particularly the rapid development of pumped storage power stations, the rotor of the generator is also developed towards high rotating speed. However, the high rotating speed under the action of centrifugal force easily causes the dislocation of the magnet yoke lamination of the generator, thereby causing serious quality accidents and bringing unnecessary loss to enterprises.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a field processing method and equipment for the generator magnet yoke lamination, which can carry out high-precision repair on a generator without lifting a rotor out of a generator foundation pit; the method can also be used for on-site high-precision processing of a newly-installed generator magnet yoke, and solves the technical problem of magnet yoke processing.
The purpose of the invention is achieved by the following technical scheme: the field processing method of the generator magnet yoke lamination comprises the following steps:
the method comprises the following steps: and (3) installing a foundation: removing all magnetic poles of the generator rotor to be processed, selecting a position to be processed of a rotor magnetic yoke to be processed, and installing a plurality of basic tensioning assemblies in grooves on two sides of the rotor magnetic yoke to be processed;
step two: assembly installation: a foundation slab and an adjusting block are arranged on two sides of an equipment foundation base in advance outside a generator foundation pit and integrated with an axial transmission assembly on the equipment foundation base; installing tangential transmission components on the axial transmission components at two sides to enable the axial transmission components and the tangential transmission components to be connected into a whole, and installing radial transmission components on the tangential transmission components;
step three: installing and processing: the method comprises the following steps:
1. hoisting the generator magnet yoke lamination field processing equipment into a generator foundation pit integrally by using a crane and a special auxiliary mounting tool, and mounting the generator magnet yoke lamination field processing equipment on a foundation tensioning assembly which is installed in advance;
2. according to the processing requirement, the foundation base plate and the adjusting block are used as a foundation, and the installation adjusting screw and the auxiliary tensioning block on the equipment are used for adjusting the foundation base of the equipment, so that the precision requirement of the installation position of each shaft of the equipment and the to-be-formed groove on the magnetic yoke of the to-be-processed rotor is met;
3. installing a forming grinding wheel, processing two V-shaped surfaces of the same groove to be formed at one time by using the forming grinding wheel, controlling a tangential transmission component to enable the forming grinding wheel to move to the next groove position after the processing of one groove position is finished, starting the processing according to the processing coordinate of the previous groove position, and repeatedly circulating until all processing surfaces of each groove position are processed;
4. after the processing of one station is finished, the equipment is separated from the basic tensioning assembly, then the basic tensioning assembly is moved to the next station, and the equipment is installed on the basic tensioning assembly again to start the adjustment processing;
5. and (4) repeating the step (2), the step (3) and the step (4) to finish the processing and repairing of the whole generator rotor yoke.
And in the step 3 of the third step, the formed grinding wheel is subjected to tool setting before machining, then the machining amount and the machining parameters are set and controlled according to the maximum machining allowance of the rotor magnetic yoke to be machined, and an automatic program is adopted to control the axial transmission assembly and the radial transmission assembly to be in circulating linkage machining at a slot position during machining.
The field processing equipment for the generator magnet yoke lamination adopted by the method mainly comprises an equipment foundation base, wherein the equipment foundation base positioned on two sides of the equipment is provided with a foundation bottom plate and an adjusting block for fixedly installing an axial transmission assembly, the axial transmission assemblies on the two sides are provided with tangential transmission assemblies, and the middle position of the tangential transmission assembly is provided with a radial transmission assembly; a plurality of basic tensioning assemblies are arranged in grooves on two sides of a rotor magnetic yoke to be processed and used for integrally mounting and fixing equipment; and the radial transmission assembly is provided with a forming grinding wheel, and the radial transmission assembly, the tangential transmission assembly and the axial transmission assembly are used for respectively controlling the horizontal, vertical and vertical movements of the forming grinding wheel, so that the high-precision processing of the groove to be formed on the magnetic yoke of the rotor to be processed is realized.
Furthermore, be provided with supplementary taut piece on the equipment foundation and be used for adjusting equipment foundation.
Further, the forming grinding wheel can simultaneously process two V-shaped surfaces of the groove to be formed.
The invention has the beneficial effects that: dangerous accidents possibly caused by dislocation of the magnetic yoke of the generator rotor are effectively avoided, and the generator can be repaired with high precision without lifting the rotor out of a foundation pit of the generator; for a newly-installed generator, the magnetic yoke can be directly processed with high precision on site, so that the technical problem of processing the magnetic yoke is solved; the forming grinding wheel is controlled by the radial transmission assembly, the tangential transmission assembly and the axial transmission assembly, two V-shaped surfaces can be simultaneously processed, and all processing surfaces after the groove to be formed is processed can reach the line position precision and the surface quality meeting the magnetic pole installation requirement.
Drawings
FIG. 1 is a schematic view of an installation structure in step one of the embodiment.
FIG. 2 is a schematic view of an installation structure in the second step of the embodiment.
Fig. 3 is a schematic view of an installation structure in the third step of the embodiment.
Fig. 4 is a view taken along direction a of fig. 3.
Description of reference numerals: the device comprises an equipment foundation base 1, a foundation bottom plate 2, an adjusting block 3, an axial transmission assembly 4, a tangential transmission assembly 5, a radial transmission assembly 6, a rotor magnet yoke 7 to be processed, grooves 7-1 on two sides, a groove 7-2 to be formed, a V-shaped surface 7-3, a foundation tensioning assembly 8, a forming grinding wheel 9 and an auxiliary tensioning block 10.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in the attached drawings, the field processing method of the generator yoke lamination comprises the following steps:
the method comprises the following steps: and (3) installing a foundation: removing all magnetic poles of a generator rotor to be processed to facilitate processing of equipment in a foundation pit, selecting a position to be processed of a rotor magnetic yoke 7 to be processed, and installing a plurality of basic tensioning assemblies 8 in grooves 7-1 on two sides of the rotor magnetic yoke 7 to be processed, wherein as shown in figure 1, 8 pieces are uniformly distributed on each side in the embodiment;
step two: assembly installation: a foundation slab 2 and an adjusting block 3 are arranged at two sides of an equipment foundation base 1 in advance outside a generator foundation pit and integrated with an axial transmission assembly 4 on the equipment foundation base 1; tangential transmission components 5 are arranged on the axial transmission components 4 at two sides, so that the two components are connected into a whole, and radial transmission components 6 are arranged on the tangential transmission components 5 (as shown in the attached figure 2);
step three: installing and processing: the method comprises the following steps:
1. hoisting the generator magnet yoke lamination field processing equipment into a generator foundation pit integrally by using a crane and a special auxiliary mounting tool, and mounting the generator magnet yoke lamination field processing equipment on a foundation tensioning assembly 8 which is installed in advance;
2. according to the processing requirement, the foundation base plate 2 and the adjusting block 3 are taken as a foundation, and the equipment foundation base 1 is adjusted by using an installation adjusting screw and an auxiliary tensioning block 10 on the equipment, so that the precision requirement of the installation position of each shaft of the equipment and the groove 7-2 to be formed on the rotor magnetic yoke 7 to be processed is met;
3. installing a forming grinding wheel 9, as shown in figure 3, wherein the embodiment is provided with six V-shaped surfaces 7-3 of three grooves 7-2 to be formed; the method comprises the steps that two V-shaped surfaces 7-3 of the same groove 7-2 to be formed are machined at one time by using a forming grinding wheel 9, after one groove is machined, the tangential transmission component 5 is controlled to enable the forming grinding wheel 9 to move to the next groove, machining is started according to the machining coordinate of the previous groove, and the process is repeated until all machining surfaces of the grooves are machined, so that all machining surfaces of the same station can reach the line position precision and the surface quality meeting the magnetic pole installation requirements after all grooves of the same station are machined;
4. after the processing of one station is finished, the equipment is separated from the basic tensioning assembly 8, then the basic tensioning assembly 8 is moved to the next station, the equipment is remounted on the basic tensioning assembly 8 to start adjusting and processing, and the equipment is kept integral during the period without hanging out a foundation pit;
5. and (4) repeating the step (2), the step (3) and the step (4) to finish the processing and repairing of the whole generator rotor yoke.
In step 3 of the third step, the formed grinding wheel 9 is subjected to tool setting before machining, then the machining amount and the machining parameters are set and controlled according to the maximum machining allowance of the rotor yoke 7 to be machined, and the axial transmission component 4 and the radial transmission component 6 are controlled to be in circulating linkage machining in one slot position by adopting an automatic program during machining.
The field processing equipment for the generator magnet yoke lamination adopted by the method mainly comprises an equipment foundation base 1, wherein a foundation base plate 2 and an adjusting block 3 are arranged on the equipment foundation base 1 positioned on two sides of the equipment and used for fixedly mounting an axial transmission assembly 4, tangential transmission assemblies 5 are arranged on the axial transmission assemblies 4 on the two sides, and a radial transmission assembly 6 is arranged in the middle of the tangential transmission assemblies 5; a plurality of basic tensioning assemblies 8 are arranged in grooves 7-1 at two sides of a rotor magnet yoke 7 to be processed and used for integrally mounting and fixing the equipment; the radial transmission assembly 6 is provided with a forming grinding wheel 9, and the radial transmission assembly 6, the tangential transmission assembly 5 and the axial transmission assembly 4 are used for respectively controlling the horizontal, vertical and vertical movements of the forming grinding wheel 9, so that the high-precision processing of the groove 7-2 to be formed on the rotor magnetic yoke 7 to be processed is realized; the equipment foundation base 1 is provided with an auxiliary tensioning block 10 for adjusting the equipment foundation base 1; the forming grinding wheel 9 can simultaneously process two V-shaped surfaces 7-3 of the groove 7-2 to be formed.
By adopting the method provided by the invention, the generator magnet yoke lamination can be repaired or processed with high precision without lifting the generator rotor out of a foundation pit, and the technical problem of magnet yoke processing is effectively solved. The forming grinding wheel is controlled by the radial transmission assembly, the tangential transmission assembly and the axial transmission assembly, two V-shaped surfaces can be simultaneously processed, and all processing surfaces after the groove to be formed is processed can reach the line position precision and the surface quality meeting the magnetic pole installation requirement.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (5)
1. A field processing method for a generator magnet yoke lamination is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: and (3) installing a foundation: removing all magnetic poles of the generator rotor to be processed, selecting a position to be processed of a rotor magnetic yoke (7) to be processed, and installing a plurality of basic tensioning assemblies (8) in grooves (7-1) on two sides of the rotor magnetic yoke (7) to be processed;
step two: assembly installation: a foundation slab (2) and an adjusting block (3) are arranged on two sides of an equipment foundation base (1) in advance outside a generator foundation pit and integrated with an axial transmission assembly (4) on the equipment foundation base (1); tangential transmission components (5) are arranged on the axial transmission components (4) on the two sides and are connected into a whole, and radial transmission components (6) are arranged on the tangential transmission components (5);
step three: installing and processing: the method comprises the following steps:
1) integrally hoisting the generator magnet yoke lamination on-site processing equipment into a generator foundation pit, and installing the generator magnet yoke lamination on a foundation tensioning assembly (8) which is installed in advance;
2) according to the machining requirement, the foundation base plate (2) and the adjusting block (3) are used as a foundation, and the installation adjusting screws and the auxiliary tightening blocks (10) on the equipment are used for adjusting the foundation base (1) of the equipment, so that the precision requirement of the installation position of each shaft of the equipment and the groove (7-2) to be formed on the magnetic yoke (7) of the rotor to be machined is met;
3) the method comprises the following steps of installing a forming grinding wheel (9), processing two V-shaped surfaces (7-3) of the same groove (7-2) to be formed at one time by using the forming grinding wheel (9), controlling a tangential transmission component (5) to move the forming grinding wheel (9) to the next groove after the processing of one groove is finished, starting the processing according to the processing coordinate of the previous groove, and repeating the cycle until all processing surfaces of the grooves are processed;
4) after the processing of one station is finished, the equipment is separated from the basic tensioning assembly (8), then the basic tensioning assembly (8) is moved to the next station, and the equipment is installed on the basic tensioning assembly (8) again to start the adjustment processing;
5) and repeating the step 2), the step 3) and the step 4) to finish the processing and repairing of the whole generator rotor magnetic yoke.
2. The method of on-site fabrication of a generator yoke lamination as claimed in claim 1, wherein: in the step 3), the formed grinding wheel (9) is subjected to tool setting before machining, then the machining amount and the machining parameters are set and controlled according to the maximum machining allowance of the rotor magnet yoke (7) to be machined, and the axial transmission assembly (4) and the radial transmission assembly (6) are controlled to be in circulating linkage machining in one slot position by adopting an automatic program during machining.
3. The utility model provides a generator yoke lamination field machining equipment which characterized in that: the device mainly comprises a device foundation base (1), wherein a foundation bottom plate (2) and an adjusting block (3) are arranged on the device foundation base (1) positioned on two sides of the device and used for fixedly installing an axial transmission assembly (4), tangential transmission assemblies (5) are arranged on the axial transmission assemblies (4) on the two sides, and a radial transmission assembly (6) is arranged in the middle of each tangential transmission assembly (5); a plurality of basic tensioning assemblies (8) are arranged in grooves (7-1) on two sides of a rotor magnet yoke (7) to be processed and used for integrally mounting and fixing the equipment; and a forming grinding wheel (9) is arranged on the radial transmission assembly (6), and the movements of the forming grinding wheel (9) in the horizontal, vertical and vertical directions are respectively controlled through the radial transmission assembly (6), the tangential transmission assembly (5) and the axial transmission assembly (4), so that the high-precision processing of a groove (7-2) to be formed on a rotor magnetic yoke (7) to be processed is realized.
4. The generator yoke lamination field processing apparatus of claim 3, wherein: the equipment foundation base (1) is provided with an auxiliary tensioning block (10) for adjusting the equipment foundation base (1).
5. The generator yoke lamination field processing apparatus of claim 3, wherein: the forming grinding wheel (9) can simultaneously process two V-shaped surfaces (7-3) of the groove (7-2) to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911098361.3A CN110890814B (en) | 2019-11-12 | 2019-11-12 | On-site processing method and equipment for generator magnet yoke lamination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911098361.3A CN110890814B (en) | 2019-11-12 | 2019-11-12 | On-site processing method and equipment for generator magnet yoke lamination |
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| Publication Number | Publication Date |
|---|---|
| CN110890814A true CN110890814A (en) | 2020-03-17 |
| CN110890814B CN110890814B (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911098361.3A Active CN110890814B (en) | 2019-11-12 | 2019-11-12 | On-site processing method and equipment for generator magnet yoke lamination |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1592110A2 (en) * | 2004-04-26 | 2005-11-02 | Siemens Westinghouse Power Corporation | Horizontal assembly of stator core using a central rail structure |
| CN201191792Y (en) * | 2008-05-07 | 2009-02-04 | 天津市天发重型水电设备制造有限公司 | Carrying apparatus for vertical hydraulic turbogenerator set rotor assembly |
| CN206673788U (en) * | 2017-04-17 | 2017-11-24 | 无锡富起电力设备配件有限公司 | A kind of generator excitation disk scene processing tool |
| CN108436394A (en) * | 2018-03-21 | 2018-08-24 | 哈尔滨电机厂有限责任公司 | Large-scale pumped storage power generator-motor machine rotor rigidity yoke method of manufacturing technology |
-
2019
- 2019-11-12 CN CN201911098361.3A patent/CN110890814B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1592110A2 (en) * | 2004-04-26 | 2005-11-02 | Siemens Westinghouse Power Corporation | Horizontal assembly of stator core using a central rail structure |
| CN201191792Y (en) * | 2008-05-07 | 2009-02-04 | 天津市天发重型水电设备制造有限公司 | Carrying apparatus for vertical hydraulic turbogenerator set rotor assembly |
| CN206673788U (en) * | 2017-04-17 | 2017-11-24 | 无锡富起电力设备配件有限公司 | A kind of generator excitation disk scene processing tool |
| CN108436394A (en) * | 2018-03-21 | 2018-08-24 | 哈尔滨电机厂有限责任公司 | Large-scale pumped storage power generator-motor machine rotor rigidity yoke method of manufacturing technology |
Non-Patent Citations (2)
| Title |
|---|
| A.D. APPLETON: "Design and manufacture of a large superconducting homopolar motor (and status of superconducting a.c. generator)", 《IEEE TRANSACTIONS ON MAGNETICS》 * |
| 汪志旭等: "大中型水轮机组转轮现场焊接加工 ", 《水利水电施工》 * |
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| CN110890814B (en) | 2020-10-30 |
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