CN110798032A - Building block type assembling tool for generator rotor coil and using method - Google Patents
Building block type assembling tool for generator rotor coil and using method Download PDFInfo
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- CN110798032A CN110798032A CN201911053149.5A CN201911053149A CN110798032A CN 110798032 A CN110798032 A CN 110798032A CN 201911053149 A CN201911053149 A CN 201911053149A CN 110798032 A CN110798032 A CN 110798032A
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- cushion block
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- block
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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
- H02K15/06—Embedding prefabricated windings in machines
- H02K15/062—Windings in slots; salient pole windings
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention provides a building block type assembling tool for a generator rotor coil and a using method, belongs to the technical field of assembling of a turbine generator rotor coil, and comprises an outer cushion block, an inner cushion block and a No. 1 coil cushion block. No. 1 coil cushion below fills up and is equipped with outer cushion, and outer cushion below fills up and is equipped with interior cushion, and outer cushion and interior cushion correspond binding face and be the inclined plane. The outer cushion block and the inner cushion block are arranged on the circumference of the excircle of the end part of the rotor coil of the generator, and the rotor coil of the generator is assembled on the cushion blocks after the cushion blocks are arranged. And after the rotor coil is assembled, the cushion block tool is disassembled, and the assembly of the generator rotor coil is completed. The assembly tool has the advantages of simple structure, replaceable components, convenience and rapidness in assembly and disassembly, high component strength, short design and manufacturing period and economic and reasonable manufacturing cost.
Description
Technical Field
The invention relates to a building block type assembling tool for a generator rotor coil and a using method thereof, belonging to the technical field of assembling of a turbine generator rotor coil. According to the invention, the inner and outer directions are defined according to the structure of the generator rotor, the inner direction is close to the central axis of the generator rotor, and the outer direction is far away from the central axis of the generator rotor; the inner part is close to the center part of the generator rotor, and the outer part is far away from the center part of the generator rotor.
Background
In the assembly process of the generator rotor coil, an assembly tool is required to be used for supporting the end coil, and the shape of the coil is ensured, so that the coil assembly tool is key technological equipment in the assembly process of the coil. As shown in fig. 1, for a schematic diagram of a rotor coil of a generator after assembling, a complete coil is composed of four groups of coils 1, 2, 3, 4, 5, 6 and 7, before an end coil is assembled, an assembling tool is needed to be padded on the outer circumferential edge of the end of a rotor body to support the end coil, so as to ensure the shape of the coil, and the tool is disassembled after assembling. As shown in fig. 2, the structure of the conventional tooling 9 in the coil assembling process used at present is a four-half structure and a circular arc shape, and the material is cast aluminum. The existing tool is heavy, inconvenient for an operator to disassemble and assemble and high in labor intensity; in addition, the aluminum casting needs to be manufactured with an additional die, so that the structural design and manufacturing period is long, and the processing cost is high. Therefore, the technical field needs a coil assembling tool which can be disassembled quickly, is light in weight and ensures the assembling quality of the generator rotor coil.
Disclosure of Invention
The invention aims to solve the technical problems of heavy weight, inconvenience in disassembly and assembly, high labor intensity, long design and manufacturing period and high processing cost of the conventional generator rotor coil assembly tool.
In order to solve the problems, the technical scheme adopted by the invention is to provide a building block type assembling tool for a generator rotor coil, which is characterized in that: the coil comprises an outer cushion block, an inner cushion block and a No. 1 coil cushion block; an inner cushion block is laid on the outer circumference of the end part of the generator rotor coil, the inner cushion block is of a tapered wedge-shaped sheet plate-shaped structure, an outer cushion block is arranged above the inner cushion block, and the outer cushion block is of a tapered wedge-shaped sheet plate-shaped structure; a No. 1 coil cushion block is arranged above the outer cushion block, and the No. 1 coil cushion block is of a cuboid plate-shaped structure; the outer cushion block and the inner cushion block are correspondingly attached to each other through the wedge surfaces; the outer cushion block, the inner cushion block and the No. 1 coil cushion block surround the outer circumference of the end part of the generator rotor coil and are laid on the outer circumference, the length direction of the cushion block is in the axial direction of the generator rotor, and one side of the width of the cushion block corresponds to the notch of the generator rotor coil.
Preferably, the outer cushion block, the inner cushion block and the No. 1 coil cushion block are made of epoxy glass cloth laminated plates.
Preferably, the outer pad and coil contacting portions are provided with a composite foil material for insulation.
Preferably, the combination surface of the outer cushion block and the inner cushion block is an inclined surface, and the inclination is 1.5 degrees.
Preferably, the end surface of the outer side of the inner cushion block is provided with a screw hole for dismounting.
The use method of the building block type assembling tool for the generator rotor coil is characterized by comprising the following steps of:
step 1: before installation, the four wind area partition plates are assembled into corresponding rotor grooves, and the wind area partition plates can limit cushion blocks.
Step 2: and fixing the wind area partition plate by using two tightening belts, and rotating the direction of the rotor to enable the area to be assembled to be vertically upward.
And step 3: assembling the cushion blocks in sequence, putting an inner cushion block into the cushion block, taking a side wind area partition plate as a backer, putting the cushion block close to the backer, and putting an outer cushion block above the outer cushion block; next to the assembled cushion blocks, a second inner cushion block is placed on the side, an outer cushion block is placed above the second inner cushion block, and the cushion blocks are assembled according to the sequence.
And 4, step 4: and (4) tightening for the second time by using a tightening belt, then rotating the rotor to enable the area without the cushion block on the other side to be vertically upward, and sequentially assembling the rest cushion blocks in place. And (3) repeating the step (2) and the step (3), assembling the rest cushion blocks in place, and installing the outer cushion block and the inner cushion block on the whole circumference around the end face of the rotor coil of the generator.
And 5: and adjusting the axial position of each cushion block, ensuring that the cushion blocks correspond to the notches of the four groups of coils No. 1-7 one by one and are flush with the notches of the rotor.
Step 6: and (3) secondarily encircling and fixing the assembled cushion block by using a hoop tool clamp, starting assembly of the coil, placing the No. 1 coil cushion block at the corresponding No. 1 coil notch position, embedding the No. 1 coil, and then sequentially embedding the No. 2 coil, the No. 3 coil, the No. 4 coil, the No. 5 coil, the No. 6 coil and the No. 7 coil until the four groups of No. 1 to No. 7 coils are assembled.
And 7: and after the coil is assembled and shaped, the cushion block is removed, and the tool dismounting tool is connected with a screw hole at the outer end part of the inner cushion block close to the wind area partition plate. Drawing out one inner cushion block and then drawing out the corresponding outer cushion block; and disassembling all the cushion blocks according to the sequence.
Compared with the prior art, the invention has the following beneficial effects:
1. simple structure and replaceable components.
2. Easy dismounting, swift, intensity is high.
3. And the assembly quality of the generator rotor coil is ensured.
4. Building block type assemblies with different sizes can be designed according to the sizes of rotor coils of different products, replacement among the assembling tool assemblies of the rotor coils of the generators in various levels is realized, and a series of universal tools for the generator products are formed.
5. The design and manufacture period is short, the manufacture cost is low, and the method is economical and reasonable.
Drawings
Fig. 1 is a schematic diagram of a generator rotor coil after assembly is completed.
Fig. 2 is a front end view of a conventional tool for assembling a rotor coil of a generator currently used.
FIG. 3 is a schematic structural diagram of a building block type assembly tool for a generator rotor coil.
Fig. 4 is a front view of the assembly fixture structure provided by the invention.
Fig. 5 is a schematic view of the structure of the upper cushion block provided by the present invention, wherein (a) is a side view, and (b) is a front view.
Fig. 6 is a schematic view of a lower mat structure provided by the present invention, wherein (a) is a side view and (b) is a front view.
Fig. 7 is a schematic view of a hoop assembling tool fixture.
Fig. 8 is a schematic view of a tool removal tool.
FIG. 9 is an enlarged view of a portion A of FIG. 4 according to the present invention.
Reference numerals: no. 1.1 coil No. 2.2 coil No. 3.3 coil No. 4 coil No. 5.5 coil No. 6 coil No. 7.7 coil No. 8 groove bottom filler strip 9. conventional Haff tool 10. tightening belt 11. outer gasket 12. inner gasket 13.1 coil gasket 14. electric heating tool 15. wind zone partition 16. hoop tool clamp 17. tool dismounting tool
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 3-8, a building block type assembly tool for a generator rotor coil comprises an outer cushion block 11, an inner cushion block 12 and a No. 1 coil cushion block 13; an inner cushion block 12 is laid on the outer circumference of the end part of the generator rotor coil, the inner cushion block 12 is of a tapered wedge-shaped sheet-shaped structure, an outer cushion block 11 is laid above the inner cushion block 12, and the outer cushion block 11 is of a tapered wedge-shaped sheet-shaped structure; a No. 1 coil cushion block 13 is laid above the outer cushion block 11, and the No. 1 coil cushion block 13 is of a cuboid plate-shaped structure; the wedge surfaces of the outer cushion block 11 and the inner cushion block 12 are correspondingly attached; the outer circumference of the end part of the generator rotor coil is surrounded by the outer cushion block 11, the inner cushion block 12 and the No. 1 coil cushion block 13 and laid on the circumference of the outer circumference, the length direction of the cushion blocks is in the axial direction of the generator rotor, and the width of the cushion blocks is correspondingly consistent with the notch of the generator rotor coil. The outer cushion block 11, the inner cushion block 12 and the No. 1 coil cushion block 13 are made of epoxy glass cloth laminated board materials. The contact portion of the outer spacer 11 with the coil is provided with a composite foil material for insulation. The combination surface of the outer cushion block 11 and the inner cushion block 12 is an inclined surface, and the inclination is 1.5 degrees. Screw holes for dismounting are arranged on the outer side end face of the inner cushion block 12.
The invention also provides a using method of the building block type assembling tool for the rotor coil of the generator, which is characterized by comprising the following steps of:
step 1: before installation, the four wind zone partition plates 15 are assembled into corresponding rotor grooves, and the wind zone partition plates 15 can limit cushion blocks.
Step 2: the wind area partition 15 is fixed by two tightening belts 10, and the rotor direction is rotated to enable the area to be assembled to be vertically upward.
And step 3: assembling the cushion blocks in sequence, putting an inner cushion block 12 into the cushion block, taking a side wind area partition plate as a backer, putting the cushion block close to the backer, and putting an outer cushion block 11 above the cushion block; next to the assembled blocks, a second inner block 12 is placed on the side, and an outer block 11 is placed above it, in that order, the blocks are assembled.
And 4, step 4: and (4) tightening for the second time by using the tightening belt 10, then rotating the rotor to enable the area without the cushion blocks on the other side to be vertically upward, and sequentially assembling the rest cushion blocks in place. And (3) repeating the step (2) and the step (3), assembling the rest cushion blocks in place, and installing the outer cushion block (11) and the inner cushion block (12) on the whole circumference around the end face of the rotor coil of the generator.
And 5: and adjusting the axial position of each cushion block, ensuring that the cushion blocks correspond to the notches of the four groups of coils No. 1-7 one by one and are flush with the notches of the rotor.
Step 6: and (3) secondarily encircling and fixing the assembled cushion block by using a hoop tool clamp 16, starting assembly of the coil, placing the No. 1 coil cushion block 13 at the corresponding No. 1 coil notch position, embedding the No. 1 coil, and then sequentially embedding the No. 2 coil 2, the No. 3 coil 3, the No. 4 coil 4, the No. 5 coil 5, the No. 6 coil 6 and the No. 7 coil 7 until the four groups of No. 1 to No. 7 coils are assembled.
And 7: and after the coil is assembled and shaped, the cushion blocks are removed, and the tool dismounting tool 17 is connected with the screw hole at the outer end part of the inner cushion block 12 close to the wind area partition 15. Extracting an inner cushion block 12 and then extracting a corresponding outer cushion block 11; and disassembling all the cushion blocks according to the sequence.
Specifically, referring to the drawings, as shown in fig. 3, a schematic structural diagram of a building block type assembly fixture for a generator rotor coil provided by the invention includes an outer cushion block 11, an inner cushion block 12, and a No. 1 coil cushion block 13. The outer cushion block 11 and the inner cushion block 12 adopt a multi-splicing plane type structure. Notches are formed in the outer cushion block 11 and the No. 1 coil cushion block 13 to avoid the groove bottom filler strip 8 and provide support for the bottom of the groove bottom filler strip 8. In order to prevent the coil from being damaged by collision, the contact part of the assembling tool and the coil adopts nonmetal, the outer cushion block 11, the inner cushion block 12 and the No. 1 coil cushion block 13 all adopt epoxy glass cloth laminated board materials, and 0.2mm of composite foil is placed on the physical contact part of the outer cushion block 11 and the coil to ensure that the outer cushion block and the coil are electrically insulated.
As shown in fig. 4, before the cushion block is installed, the four wind area partition plates 15 are assembled and inserted into the corresponding rotor grooves, and the wind area partition plates 15 can limit the cushion block; the wind area partition plates 15 are fixed by two tightening belts 10, the direction of the rotor is rotated to enable the area to be assembled on one side to be vertically upward, and the wind area partition plates 15 are symmetrically distributed on the left side and the right side. Assembling the cushion blocks in sequence: firstly, placing an inner cushion block 12, taking a left wind area partition plate as a backer, placing the left wind area partition plate in a close fit manner, and then placing an outer cushion block 11 above the left wind area partition plate; next to the assembled blocks, a second inner block 12 is placed, and then an outer block 11 is placed above it, in this order, the blocks on one side are assembled. And (3) tightening for the second time by using the tightening belt 10, then rotating the rotor to enable the area without the cushion blocks on the other side to be vertically upward, symmetrically distributing the wind area partition plates 15 on the left side and the right side, repeating the steps, and sequentially assembling the rest cushion blocks in place. And tightening the tightening belt 10 for the third time, adjusting the axial position of each cushion block, and ensuring that the cushion blocks correspond to the notches of the four groups of coils No. 1-7 one by one and are flush with the notches of the rotor.
As shown in fig. 3 and 7, the assembled cushion block is secondarily fixed by the hoop fixture 16, and the coil assembly is started: placing the No. 1 coil cushion block 13 at the corresponding No. 1 coil notch position, and checking whether the No. 1 coil cushion block 13 tightly supports the groove bottom filler strip 8; embedding the linear part of the No. 1 coil 1 into the groove, welding the linear part and the end part of the No. 1 coil 1 by using a welding machine, and assembling a tooling embedded line by using a hoop tooling clamp 16 in a matching way; after the bottom turns of the coils are embedded, the coils are embedded one by one, and after a group of coils are embedded, the coils 2, 3, 4, 5 and 6 are embedded in sequence until the four groups of coils 1-6 are assembled. Before assembling the No. 7 coil 7, an electric heating tool 14 is pre-embedded in the outer cushion block 11, and then the No. 7 coil 7 is assembled, so that the assembly of all coils is completed.
As shown in fig. 5, 6 and 8, after the coil is assembled and shaped, the spacers need to be removed, the outer spacer 11 and the inner spacer 12 adopt a wedge structure, the rotor is rotated to be in a state that the partition 15 of one wind area is vertically downward, the gap between the rotor coil and the spacers is maximized by using gravity, and the tool disassembling tool 17 is connected with the screw hole at the outer end part of the inner spacer 12 close to the partition 15 of the wind area. Extracting an inner cushion block 12 by using a tool dismounting tool 17, and extracting a corresponding outer cushion block 11; then, connecting and extracting the tool disassembling tool 17 with the adjacent second inner cushion block 12, and extracting the corresponding outer cushion block 11; in this order, all the pads on one side are extracted. And (4) rotating the rotor to a state that the partition plate 15 of the other side wind area is vertically downward, and repeating the steps until all the cushion blocks are completely disassembled.
The outer cushion block 11, the inner cushion block 12 and the No. 1 coil cushion block 13 are of planar structures, namely, the contact mode of the cushion blocks and the coil is surface contact and partial line contact. The calculation shows that the size dispersion of the arc-shaped structure and the plane-shaped structure is only 0.91mm, so that the assembly forming of the rotor coil is not influenced, and the plane-shaped structure is selected.
The outer cushion block 11 and the inner cushion block 12 adopt an upper-layer and lower-layer wedge type structure, and the inclination is 1.5 degrees. The wedge type structure is adopted to facilitate the disassembly of the cushion block, and the cushion block is disassembled step by using a disassembling tool.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a generator rotor coil cordwood system assembly fixture which characterized in that: comprises an outer cushion block (11), an inner cushion block (12) and a No. 1 coil cushion block (13); an inner cushion block (12) is laid on the outer circumferential edge of the end part of the generator rotor coil, the inner cushion block (12) is of a tapered wedge-shaped sheet-type plate-shaped structure, an outer cushion block (11) is arranged above the inner cushion block (12), and the outer cushion block (11) is of a tapered wedge-shaped sheet-type plate-shaped structure; a No. 1 coil cushion block (13) is arranged above the outer cushion block (11), and the No. 1 coil cushion block (13) is of a cuboid plate-shaped structure; the outer cushion block (11) and the inner cushion block (12) are correspondingly attached to each other through the wedge surfaces; outer cushion (11), interior cushion (12) and No. 1 coil cushion (13) surround the outer circumference of generator rotor coil tip and lay on outer circumference, the length direction of cushion is generator rotor axial, the width one side of cushion corresponds unanimously with generator rotor coil notch.
2. The building block type assembling tool for the generator rotor coil as claimed in claim 1, wherein: the outer cushion block (11), the inner cushion block (12) and the No. 1 coil cushion block (13) are made of epoxy glass cloth laminated boards.
3. The building block type assembling tool for the generator rotor coil as claimed in claim 1, wherein: the contact part of the outer cushion block (11) and the coil is provided with composite foil materials for insulation.
4. The building block type assembling tool for the generator rotor coil as claimed in claim 1, wherein: the combined surface of the outer cushion block (11) and the inner cushion block (12) is an inclined surface, and the inclination is 1.5 degrees.
5. The building block type assembling tool for the generator rotor coil as claimed in claim 1, wherein: and screw holes for dismounting are arranged on the end surface of the outer side of the inner cushion block (12).
6. The use method of the building block type assembling tool for the generator rotor coil is characterized by comprising the following steps of:
step 1: before installation, the four wind area partition plates (15) are assembled into corresponding rotor grooves, and the wind area partition plates (15) can limit cushion blocks.
Step 2: the wind area partition plate (15) is fixed by two tightening belts (10), and the direction of the rotor is rotated to enable the area to be assembled to be vertically upward.
And step 3: assembling the cushion blocks in sequence, putting an inner cushion block (12) into the cushion block, taking a side wind area partition plate as a backer, putting the cushion block close to the backer, and putting an outer cushion block (11) above the cushion block; next to the assembled blocks, a second inner block (12) is placed on the side, and an outer block (11) is placed over it, in that order, the blocks are assembled.
And 4, step 4: and (3) tightening for the second time by using a tightening belt (10), then rotating the rotor to enable the area without the cushion block on the other side to be vertically upward, and sequentially assembling the rest cushion blocks in place. And (3) repeating the step (2) and the step (3), assembling the rest cushion blocks in place, and installing the outer cushion block (11) and the inner cushion block (12) on the whole outer circumference surrounding the end part of the generator rotor coil.
And 5: and adjusting the axial position of each cushion block, ensuring that the cushion blocks correspond to the notches of the four groups of coils No. 1-7 one by one and are flush with the notches of the rotor.
Step 6: fix the cushion that will assemble with staple bolt frock clamp (16) secondary encircleing, begin the assembly of coil, place No. 1 coil cushion (13) in No. 1 coil notch position that corresponds, inlay No. 1 coil (1), inlay No. 2 coil (2), No. 3 coil (3) in proper order again, No. 4 coil (4), No. 5 coil (5), No. 6 coil (6) and No. 7 coil (7), until four groups 1 to No. 7 coil assembly finishes.
And 7: and after the coil is assembled and shaped, the cushion blocks are removed, and a tool dismounting tool (17) is connected with a screw hole at the outer end part of the inner cushion block (12) close to the wind area partition plate (15). Extracting an inner cushion block (12) and then extracting a corresponding outer cushion block (11); and disassembling all the cushion blocks according to the sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053149.5A CN110798032B (en) | 2019-10-31 | 2019-10-31 | Building block type assembling tool for generator rotor coil and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053149.5A CN110798032B (en) | 2019-10-31 | 2019-10-31 | Building block type assembling tool for generator rotor coil and using method |
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| Publication Number | Publication Date |
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| CN110798032A true CN110798032A (en) | 2020-02-14 |
| CN110798032B CN110798032B (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911053149.5A Active CN110798032B (en) | 2019-10-31 | 2019-10-31 | Building block type assembling tool for generator rotor coil and using method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4864171A (en) * | 1988-09-06 | 1989-09-05 | Leningradskoe Proizvodstvennoe Electromashinostroitelnoe Objedinenie "Electrosila" | Rotor of an electric machine |
| JP2003259601A (en) * | 2002-03-01 | 2003-09-12 | Mitsubishi Electric Corp | Rotor cooling device for rotary electric machine |
| CN201918820U (en) * | 2010-12-20 | 2011-08-03 | 江阴德生新材料锻造有限公司 | Nonmagnetic steel motor guard ring |
| CN103580348A (en) * | 2013-11-12 | 2014-02-12 | 中电电机股份有限公司 | Support structure for combined cushion block of coils at rotor end of steam turbine generator |
| CN107695314A (en) * | 2017-08-18 | 2018-02-16 | 无锡厚发自动化设备有限公司 | The application method of split type cast-aluminum dummy shaft |
| CN207652251U (en) * | 2017-10-20 | 2018-07-24 | 东方电气集团东方电机有限公司 | Combined type non salient pole machine rotor coil ends molding machine |
-
2019
- 2019-10-31 CN CN201911053149.5A patent/CN110798032B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4864171A (en) * | 1988-09-06 | 1989-09-05 | Leningradskoe Proizvodstvennoe Electromashinostroitelnoe Objedinenie "Electrosila" | Rotor of an electric machine |
| JP2003259601A (en) * | 2002-03-01 | 2003-09-12 | Mitsubishi Electric Corp | Rotor cooling device for rotary electric machine |
| CN201918820U (en) * | 2010-12-20 | 2011-08-03 | 江阴德生新材料锻造有限公司 | Nonmagnetic steel motor guard ring |
| CN103580348A (en) * | 2013-11-12 | 2014-02-12 | 中电电机股份有限公司 | Support structure for combined cushion block of coils at rotor end of steam turbine generator |
| CN107695314A (en) * | 2017-08-18 | 2018-02-16 | 无锡厚发自动化设备有限公司 | The application method of split type cast-aluminum dummy shaft |
| CN207652251U (en) * | 2017-10-20 | 2018-07-24 | 东方电气集团东方电机有限公司 | Combined type non salient pole machine rotor coil ends molding machine |
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| CN110798032B (en) | 2021-09-14 |
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