CN109483127B - Narrow-interval welding device for upper and lower coils at end part of turbine generator stator - Google Patents
Narrow-interval welding device for upper and lower coils at end part of turbine generator stator Download PDFInfo
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- CN109483127B CN109483127B CN201811492707.3A CN201811492707A CN109483127B CN 109483127 B CN109483127 B CN 109483127B CN 201811492707 A CN201811492707 A CN 201811492707A CN 109483127 B CN109483127 B CN 109483127B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention relates to a narrow-interval welding device for upper and lower coils at the end part of a stator of a steam turbine generator, which is characterized by comprising a base, wherein a lifting mechanism is arranged on the base, the lifting mechanism can drive a sliding table mechanism on the lifting mechanism to lift up and down along a Z axis, an inductor and a clamp are fixed on the sliding table mechanism, and the position of the clamp can be adjusted along an X axis and a Y axis through the sliding table mechanism. The invention can adapt to the product structure design of the same phase and the narrow spacing between the phases in the welding of the end connecting copper bar; the clamping pressing force is large, the clamping process is simple, and the position fine adjustment is convenient; heating efficiency is high, has reduced welding set to the sheltering from of welded joint, the simple operation.
Description
Technical Field
The invention relates to a narrow-interval welding device for upper and lower coils at the end part of a stator of a steam turbine generator, which is used for welding the end part of a stator coil of the steam turbine generator in a wire embedding stage and belongs to the technical field of manufacturing processes of steam turbine generators.
Background
In the small-capacity air-cooled steam turbine generator, the number of slots of the stator core is increased, and after the stator is embedded with wires, the same phase and the interval of the stator coils at the end parts are greatly reduced. As shown in fig. 1, a schematic diagram of a connection structure of an upper layer and a lower layer at the end of a stator coil is shown.
As shown in the schematic diagram of the connection structure of the upper layer and the lower layer at the end part of the stator coil in fig. 1, when welding, the upper layer coil 2-1, the lower layer coil 2-2 and the connecting copper bar 1 need to be clamped and welded at the same time. The increase of groove number leads to tip homophase and separates the reduction of looks interval, has compressed the welding space of end connection copper bar 1 by a wide margin, is difficult to arrange universal fixturing and compresses tightly the work piece in welding process.
Disclosure of Invention
The purpose of the invention is: the utility model provides a be exclusively used in clamping, welded frock between upper and lower floor's coil and the connection copper bar.
In order to achieve the above object, the technical solution of the present invention is to provide a narrow-interval welding device for upper and lower coils at the end of a stator of a steam turbine generator, which is characterized by comprising a base, wherein a lifting mechanism is arranged on the base, the lifting mechanism can drive a sliding table mechanism thereon to lift up and down along a Z axis, an inductor and a clamp are fixed on the sliding table mechanism, and the position of the clamp can be adjusted along an X axis and a Y axis through the sliding table mechanism, wherein:
the fixture comprises an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are connected into a whole through bolts and springs, the gap between the upper clamping plate and the lower clamping plate can be adjusted through the bolts, and the upper coil, the lower coil and the connecting copper bar are clamped between the upper clamping plate and the lower clamping plate; an upper induction heater is embedded in the upper clamping plate, a lower induction heater is embedded in the lower clamping plate, the upper induction heater and the lower induction heater are connected with an inductor, and an upper coil, a lower coil and a connecting copper bar which are clamped between the upper clamping plate and the lower clamping plate are positioned between the upper induction heater and the lower induction heater; insulation pieces are respectively arranged between the upper induction heater and the upper clamping plate and between the lower induction heater and the lower clamping plate, and the insulation pieces are fixedly connected with the upper clamping plate or the lower clamping plate through silicon steel sheets; the left and right sides in space between punch holder and the lower plate is equipped with a puller block respectively, and two puller blocks link to each other with respective puller bolt respectively, make two puller blocks move or the back-to-back motion in opposite directions through operation puller bolt, and when two puller blocks moved in opposite directions, it was tight with being connected the copper bar top respectively with upper coil and lower floor's coil.
Preferably, the lifting mechanism is in transitional connection with the sliding table mechanism through a flexible mechanism.
Preferably, the flexible mechanism comprises a first bottom plate fixedly connected with the lifting mechanism, springs are respectively arranged at four corners of the first bottom plate, and the springs are fixedly connected with the sliding table mechanism.
Preferably, the sliding table mechanism comprises a second bottom plate, a Y-axis guide rail is arranged on the second bottom plate, a Y-axis sliding block matched with the Y-axis guide rail is arranged on the Y-axis guide rail, and a third bottom plate is fixed on the Y-axis sliding block and is driven by the Y-axis sliding block to move along the Y-axis guide rail; an X-axis guide rail is arranged on the bottom plate III, an X-axis sliding block matched with the X-axis guide rail is arranged on the X-axis guide rail, the mounting plate is fixed on the X-axis sliding block, and the X-axis sliding block drives the mounting plate to move along the X-axis guide rail; the inductor and the clamp are fixed on the mounting plate.
Preferably, a pair of first mounting snap rings for mounting the inductor and a pair of second mounting snap rings for mounting the inductor are fixed on the mounting plate, wherein the first mounting snap rings are arranged along the X-axis direction, and the second mounting snap rings are arranged along the Y-axis direction; the sensor is fixedly installed along the X-axis direction through the first installation clamping ring or is fixedly installed along the Y-axis direction through the second installation clamping ring.
Preferably, the upper induction heater and the lower induction heater are externally wrapped with magnetic shields.
Preferably, circulating water is introduced into the upper clamping plate and the lower clamping plate for cooling.
The stator coil has a circumferential tightening function, can enable the end part of the stator coil to be tightly attached to the contact surface of the connecting copper bar, and can adapt to the design of narrow spacing between the same phase and the separated phase; meanwhile, the radial arrangement space does not interfere with the parallel ring lead, and the pressing force is large, so that the upper and lower coils and the connecting copper bar can be tightly pressed.
Compared with the prior art, the beneficial effect of this patent is:
the invention can adapt to the product structure design of the same phase and the narrow spacing between the phases in the welding of the end connecting copper bar; the clamping pressing force is large, the clamping process is simple, and the position fine adjustment is convenient; heating efficiency is high, has reduced welding set to the sheltering from of welded joint, the simple operation.
Drawings
FIG. 1 is a schematic view of a connection structure of an upper layer and a lower layer at the end of a stator coil;
FIG. 2 is a schematic view of an overall structure of a narrow-pitch welding device for upper and lower coils at the end of a stator of a steam turbine generator according to the present invention;
FIG. 3 is a schematic structural view of a slide table mechanism according to the present invention;
FIG. 4 is an exploded view of the clamp of the present invention;
fig. 5 is a schematic diagram of the application of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
As shown in FIG. 2, the narrow-interval welding device for the upper and lower coils at the end part of the stator of the steam turbine generator provided by the invention comprises a base 3, wherein a pulley is arranged at the bottom of the base 3. The base 3 is provided with a lifting mechanism 4, the lifting mechanism 4 adopts a bamboo joint type lifter and can drive the sliding table mechanism 5 on the lifting mechanism to lift up and down along the Z axis. The sliding table mechanism 5 is fixed on the lifting mechanism 4 through a flexible mechanism.
Referring to fig. 3, the flexible mechanism includes a first bottom plate 7 connected and fixed with the lifting mechanism 4, springs 8 are respectively disposed at four corners of the first bottom plate 7, and the springs 8 are connected and fixed with the sliding table mechanism 5. The angular deflection of the slide mechanism 5 in the YOZ plane is achieved by means of a spring 8.
The inductor and the clamp 6 are fixed on the sliding table mechanism 5, and the position of the clamp 6 can be adjusted along the X axis and the Y axis through the sliding table mechanism 5. With reference to fig. 3, the sliding table mechanism 5 comprises a second bottom plate 5-1 fixedly connected with a spring 8, a Y-axis guide rail 5-2 is arranged on the second bottom plate 5-1, a Y-axis slide block matched with the Y-axis guide rail 5-2 is arranged on the Y-axis guide rail 5-2, a third bottom plate 5-3 is fixed on the Y-axis slide block, and the Y-axis slide block drives the third bottom plate 5-3 to move along the Y-axis guide rail 5-2; an X-axis guide rail 5-4 is arranged on the third bottom plate 5-3, an X-axis sliding block matched with the X-axis guide rail 5-4 is arranged on the X-axis guide rail 5-4, the mounting plate 5-5 is fixed on the X-axis sliding block, and the X-axis sliding block drives the mounting plate 5-5 to move along the X-axis guide rail 5-4; the inductor and the clamp 6 are fixed on the mounting plates 5-5.
In order to fix the inductor, a pair of first installation clamping rings 5-6 for installing the inductor and a pair of second installation clamping rings 5-7 for installing the inductor are fixed on the installation plates 5-5 and are arranged along the X-axis direction. The sensor is fixedly installed along the X-axis direction through installing the first clamping ring 5-6 or is fixedly installed along the Y-axis direction through installing the second clamping ring 5-7.
Referring to fig. 4 and 5, the clamp 6 comprises an upper clamp plate 6-1 and a lower clamp plate 6-2, and circulating water is introduced into the upper clamp plate 6-1 and the lower clamp plate 6-2 for cooling; the upper clamping plate 6-1 and the lower clamping plate 6-2 are connected into a whole through bolts and springs, a gap between the upper clamping plate 6-1 and the lower clamping plate 6-2 can be adjusted through the bolts, and the upper coil 2-1, the lower coil 2-2 and the connecting copper bar 1 are clamped between the upper clamping plate 6-1 and the lower clamping plate 6-2; an upper induction heater 6-3 is embedded in the upper splint 6-1, a lower induction heater 6-4 is embedded in the lower splint 6-2, the upper induction heater 6-3 and the lower induction heater 6-4 are connected with an inductor, and an upper coil 2-1, a lower coil 2-2 and a connecting copper bar 1 clamped between the upper splint 6-1 and the lower splint 6-2 are positioned between the upper induction heater 6-3 and the lower induction heater 6-4; the upper induction heater 6-3 and the lower induction heater 6-4 are externally wrapped with magnetic shields; an insulating part 6-5 is respectively arranged between the upper induction heater 6-3 and the upper clamping plate 6-1 and between the lower induction heater 6-4 and the lower clamping plate 6-2, and the insulating part 6-5 is fixedly connected with the upper clamping plate 6-1 or the lower clamping plate 6-2 through a silicon steel sheet 6-6; the left side and the right side of the space between the upper clamping plate 6-1 and the lower clamping plate 6-2 are respectively provided with a puller block 6-7, the two puller blocks 6-7 are respectively connected with respective puller bolts 6-8, the puller bolts 6-8 are operated to enable the two puller blocks 6-7 to move towards or away from each other, and when the two puller blocks 6-7 move towards each other, the upper coil 2-1 and the lower coil 2-2 are respectively pulled against the connecting copper bar 1.
The welding joints can be pressed on the upper surface, the lower surface and two side surfaces simultaneously through the upper splint 6-1, the lower splint 6-2 and the two jacking blocks 6-7. The upper induction heater 6-3 and the lower induction heater 6-4 are embedded into the upper clamping plate 6-1 and the lower clamping plate 6-2 which adopt water cooling. The upper clamping plate 6-1 and the lower clamping plate 6-2 adopt a magnetic shielding technology, so that the upper clamping plate 6-1 and the lower clamping plate 6-2 are not influenced by an induction magnetic field when the magnetic shielding clamp is used, and the induction heating amount of the clamp is reduced by combining a water cooling technology, so that the rigidity of the upper clamping plate 6-1 and the lower clamping plate 6-2 is not changed.
Claims (7)
1. The utility model provides a narrow interval welding set of lower floor coil on turbo generator stator tip, a serial communication port, including base (3), be equipped with elevating system (4) on base (3), elevating system (4) can drive slip table mechanism (5) on it along Z axle oscilaltion, and inductor and anchor clamps (6) are fixed on slip table mechanism (5), can follow the position of X axle and Y axle regulation anchor clamps (6) through slip table mechanism (5), wherein:
the clamp (6) comprises an upper clamp plate (6-1) and a lower clamp plate (6-2), the upper clamp plate (6-1) and the lower clamp plate (6-2) are connected into a whole through bolts and springs, a gap between the upper clamp plate (6-1) and the lower clamp plate (6-2) can be adjusted through the bolts, and the upper coil (2-1), the lower coil (2-2) and the connecting copper bar (1) are clamped between the upper clamp plate (6-1) and the lower clamp plate (6-2); an upper induction heater (6-3) is embedded in the upper clamping plate (6-1), a lower induction heater (6-4) is embedded in the lower clamping plate (6-2), the upper induction heater (6-3) and the lower induction heater (6-4) are connected with an inductor, and an upper coil (2-1), a lower coil (2-2) and a connecting copper bar (1) clamped between the upper clamping plate (6-1) and the lower clamping plate (6-2) are positioned between the upper induction heater (6-3) and the lower induction heater (6-4); insulation pieces (6-5) are respectively arranged between the upper induction heater (6-3) and the upper clamping plate (6-1) and between the lower induction heater (6-4) and the lower clamping plate (6-2), and the insulation pieces (6-5) are fixedly connected with the upper clamping plate (6-1) or the lower clamping plate (6-2) through silicon steel sheets (6-6); the left side and the right side of the space between the upper clamping plate (6-1) and the lower clamping plate (6-2) are respectively provided with a puller block (6-7), the two puller blocks (6-7) are respectively connected with respective puller bolts (6-8), the two puller blocks (6-7) move towards each other or move back to back by operating the puller bolts (6-8), and when the two puller blocks (6-7) move towards each other, the upper coil (2-1) and the lower coil (2-2) are respectively pulled against the connecting copper bar (1).
2. The narrow-interval welding device for the upper and lower coils at the end part of the stator of the steam turbine generator as claimed in claim 1, characterized in that the lifting mechanism (4) and the sliding table mechanism (5) are in transition connection through a flexible mechanism.
3. The narrow-interval welding device for the upper and lower coils at the end part of the stator of the steam turbine generator as claimed in claim 2, wherein the flexible mechanism comprises a first base plate (7) fixedly connected with the lifting mechanism (4), springs (8) are respectively arranged at four corner parts of the first base plate (7), and the springs (8) are simultaneously fixedly connected with the sliding table mechanism (5).
4. The narrow-interval welding device for the upper and lower coils at the end part of the stator of the steam turbine generator as claimed in claim 1, wherein the sliding table mechanism (5) comprises a second bottom plate (5-1), a Y-axis guide rail (5-2) is arranged on the second bottom plate (5-1), a Y-axis sliding block matched with the Y-axis guide rail (5-2) is arranged on the Y-axis guide rail, a third bottom plate (5-3) is fixed on the Y-axis sliding block, and the Y-axis sliding block drives the third bottom plate (5-3) to move along the Y-axis guide rail (5-2); an X-axis guide rail (5-4) is arranged on the third bottom plate (5-3), an X-axis sliding block matched with the X-axis guide rail (5-4) is arranged on the X-axis guide rail, the mounting plate (5-5) is fixed on the X-axis sliding block, and the mounting plate (5-5) is driven by the X-axis sliding block to move along the X-axis guide rail (5-4); the inductor and the clamp (6) are fixed on the mounting plate (5-5).
5. The narrow-interval welding device for the upper and lower coils at the end part of the stator of the steam turbine generator as claimed in claim 4, characterized in that a pair of mounting snap rings I (5-6) for mounting the inductor and a pair of mounting snap rings II (5-7) for mounting the inductor are fixed on the mounting plate (5-5) and are arranged along the X-axis direction; the sensor is fixedly installed along the X-axis direction through a first installation clamping ring (5-6) or is fixedly installed along the Y-axis direction through a second installation clamping ring (5-7).
6. The narrow-spacing welding device for the upper and lower coils at the end part of the stator of the turbonator as claimed in claim 1, wherein the upper induction heater (6-3) and the lower induction heater (6-4) are externally wrapped with magnetic shields.
7. The narrow-spacing welding device for the upper and lower coils at the end part of the stator of the steam turbine generator as claimed in claim 1, characterized in that circulating water is introduced into the upper clamping plate (6-1) and the lower clamping plate (6-2) for cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811492707.3A CN109483127B (en) | 2018-12-07 | 2018-12-07 | Narrow-interval welding device for upper and lower coils at end part of turbine generator stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811492707.3A CN109483127B (en) | 2018-12-07 | 2018-12-07 | Narrow-interval welding device for upper and lower coils at end part of turbine generator stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109483127A CN109483127A (en) | 2019-03-19 |
| CN109483127B true CN109483127B (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811492707.3A Active CN109483127B (en) | 2018-12-07 | 2018-12-07 | Narrow-interval welding device for upper and lower coils at end part of turbine generator stator |
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| CN (1) | CN109483127B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200980025Y (en) * | 2006-05-25 | 2007-11-21 | 上海汽轮发电机有限公司 | A welding and clamping movable rack of the motor rotor loops of a diesel engine |
| CN101134259A (en) * | 2007-08-22 | 2008-03-05 | 天津市天发重型水电设备制造有限公司 | Method for welding electric machine rotor copper bar coil by using high-frequency soldering machine |
| CN101862931A (en) * | 2010-07-10 | 2010-10-20 | 宜昌江峡船用机械有限责任公司 | Work clamp of stator pressing plate |
| CN106826049A (en) * | 2016-12-30 | 2017-06-13 | 无锡明珠钢球有限公司 | Stator welding tooling |
| CN207013862U (en) * | 2017-05-08 | 2018-02-16 | 东莞市码科图精工实业有限公司 | Diffusion welding machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9847702B2 (en) * | 2015-06-08 | 2017-12-19 | General Electric Company | In-situ method for sealing fluid cooled conduits for a generator |
-
2018
- 2018-12-07 CN CN201811492707.3A patent/CN109483127B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200980025Y (en) * | 2006-05-25 | 2007-11-21 | 上海汽轮发电机有限公司 | A welding and clamping movable rack of the motor rotor loops of a diesel engine |
| CN101134259A (en) * | 2007-08-22 | 2008-03-05 | 天津市天发重型水电设备制造有限公司 | Method for welding electric machine rotor copper bar coil by using high-frequency soldering machine |
| CN101862931A (en) * | 2010-07-10 | 2010-10-20 | 宜昌江峡船用机械有限责任公司 | Work clamp of stator pressing plate |
| CN106826049A (en) * | 2016-12-30 | 2017-06-13 | 无锡明珠钢球有限公司 | Stator welding tooling |
| CN207013862U (en) * | 2017-05-08 | 2018-02-16 | 东莞市码科图精工实业有限公司 | Diffusion welding machine |
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| Publication number | Publication date |
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| CN109483127A (en) | 2019-03-19 |
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