CN105305740A - Stator lamination mounting quality control method - Google Patents
Stator lamination mounting quality control method Download PDFInfo
- Publication number
- CN105305740A CN105305740A CN201510695176.8A CN201510695176A CN105305740A CN 105305740 A CN105305740 A CN 105305740A CN 201510695176 A CN201510695176 A CN 201510695176A CN 105305740 A CN105305740 A CN 105305740A
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- iron core
- positioning bar
- stator
- stator lasmination
- ring
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Abstract
The invention relates to the field of hydraulic generator set structures, and particularly relates to a hydraulic generator stator iron core structure and a mounting method in the stator lamination mounting quality control method. The method has the advantages and the beneficial effects that the force bearing condition of the stator lamination is improved, the stator weight is lessened, the motor price is reduced, an insulated cross-core tightening screw rod is adopted to directly press the stator lamination, effects of iron core pressing are enhanced, unsafe influences as the iron core is loose when the set operates and the iron core generates mechanical vibration can be avoided, the stator iron core pressing quality is ensured, the process is simple, the operation is convenient, economic and practical, time and labor are saved, the iron core pressing precision is high, and the pressing mounting effects are good.
Description
Technical field
The present invention relates to the construction applications of hydro-generating Unit, especially relate to hydroelectric generator stator core construction and installation method thereof in a stator lasmination fixing quality control method.
Background technology
Stator core is a vitals of hydraulic generator, its quality directly affects the service life of hydraulic generator.Because reason, the unit operation times such as the unreasonable and workmanship of stator core project organization are long, cause that stator core produces eddy current loss, temperature rise increases, cause that iron core produces mechanical oscillation, serious stator core produces noise, make core slackness, cause whole stator core to sweep thorax, stator bar damage, need all to change whole stator core to design and produce, and be also improve one of unit operation time and the effective ways extending unit durability to the control of installation quality when it is installed.
Summary of the invention
The object of this invention is to provide one modern design, technique simple, effective shortening iron core axial length, alleviate generator weight, superior performance, and installation quality is easy to the stator lasmination fixing quality control method of control.
Technical scheme of the present invention is: stator iron core structure of water turbine generator, comprise stator lasmination, erecting device, take-up device and tooth support, described stator lasmination is arranged on described erecting device, described erecting device and described take-up device are through described tooth support, and compress described stator lasmination by described tooth support, adopt erecting device tight stator lasmination, the compression of stator lasmination is except the erecting device united two into one at cylindrical and positioning bar function, at stator lasmination yoke, portion is designed with the take-up device running through iron core, erecting device quantity and circumferentially interlaced arrangement identical with the take-up device quantity at stator lasmination back, the insulating sleeve that 2mm is thick is had outside take-up device, to increase the compression effect of iron core,
Its installation method is:
(1) positioning bar is installed, at benchmark muscle front and side suspention piano wire, measure and adjust radial, the tangential perpendicularity of benchmark muscle, measure and adjust the radius of positioning bar at each ring flat-plate place, perpendicularity, skew degree, from bottom to top adjust the size of positioning bar at each ring flat-plate successively, all trays of the positioning bar that spot welding is adjusted, in welding process, tight gapless between positioning bar and positioning rib supporting block; For preventing stress too concentrated, first spot welding adapter ring Board position, then respectively to upper and lower side each ring adjustment spot welding; Spot welding is carried out in the both sides of supporting plate respectively, and symmetrical spot welding is taked in the spot welding of positioning bar; After the spot welding of each ring flat-plate tray completes, make an accurate selection of centre, origin reference location muscle front a bit, as newel datum mark, all the other positioning bar internal diameter sizes are the relative value of this datum mark, are marked by amount datum mark, with inside micrometer datum mark absolute dimension;
(2) positioning bar string distance between this ring flat-plate of support is checked with positioning bar string apart from detecting model, with newel measurement and positioning muscle radius and radial skew between this ring flat-plate of support, after whole adjustment passed examination, with positioning bar string apart from double end fore-set instrument will between support same ring flat-plate the whole horizontal stretching of positioning bar, with tray fore-set, this ring tray is fixed on support;
(3) welding of tray, during construction welding, 1-2 working face of tray domain symmetry become even number name welder to weld simultaneously, and speed of welding is consistent with direction each other, after all trays on the same ring flat-plate of out frame have welded, next ring could be welded, welded rear removing welding slag;
(4) calculate single hop iron core compensating plate, after iron core each section of precompressed, according to measuring height, determine that lamination compensates the number of plies to during precompressed next time, determine that every iron leg core diameter is folded into the number of plies to compensating plate, make radial compensation sheet and fold into quantitative value;
(5) according to stator core assembling length, every layer of tower connects 1/3 length of a film mode and splices, and in lamination process, raps punching yoke portion and makes it near positioning bar, use dressing stick shaping, and at correspondent section iron core installing insulating lining and vent segment;
(6) after often having folded one section, rap core lamination stack inner circle with rubber hammer or "painted-face" character in opera, make it near positioning bar, often use dressing stick shaping after folded high one section of 20mm; Measure iron core internal diameter; Put at corresponding core packet and connect insulating washer and insulating sleeve; Single hop core length is surveyed with single hop iron core survey tool, and instant shaping in lamination process, every lamination completes one section, before precompressed namely the folded whole shaping of iron core once;
(7) iron core compresses, tooth support on install and adjust, stretching screw, insulating sleeve, butterfly spring, pressure back-up ring, insulating washer, packing ring, nut, nut is to tightening, afterwards with hydraulic elongator repeatedly, symmetrical, jump, the tension order of first intermediate and then both sides, progressively stretching screw, until reach final screwing force.
Further, described erecting device is punching screw rod, and described erecting device is disposed with nut, insulating washer, insulating sleeve, butterfly spring from top to bottom.Adopt the design of butterfly spring gasket construction, iron core long-time running is issuable to be loosened to eliminate.
Further, described take-up device is back stretching screw, and described take-up device is disposed with locknut, packing ring, butterfly spring from top to bottom.Adopt the design of butterfly spring gasket construction, iron core long-time running is issuable to be loosened to eliminate.
The advantage that the present invention has and good effect are: improve the force-bearing situation of stator lasmination thus alleviate stator weight, reduce motor cost, the insulation punching insulation stretching screw through yoke portion is adopted directly to press-fit stator lasmination, to improve the effect that iron core compresses, avoid because of unit operation time, cause iron core to produce mechanical oscillation, make the dangerous impact of core slackness, guarantee unit stator iron core pressing quality, technique is simple, easy to operate, economical and practical, time saving and energy saving, iron core pressure mounting precision is high, press-fits the advantages such as effective.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, stator lasmination; 2, erecting device; 3, take-up device; 4, tooth support.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further, but be not limited to embodiment.
Embodiment 1
Technical scheme of the present invention is: stator iron core structure of water turbine generator, comprise stator lasmination, erecting device, take-up device and tooth support, described stator lasmination is arranged on described erecting device, described erecting device and described take-up device are through described tooth support, and compress described stator lasmination by described tooth support, adopt erecting device tight stator lasmination, the compression of stator lasmination is except the erecting device united two into one at cylindrical and positioning bar function, at stator lasmination yoke, portion is designed with the take-up device running through iron core, erecting device quantity and circumferentially interlaced arrangement identical with the take-up device quantity at stator lasmination back, the insulating sleeve that 2mm is thick is had outside take-up device, to increase the compression effect of iron core,
Its installation method is:
(1) positioning bar is installed, at benchmark muscle front and side suspention piano wire, measure and adjust radial, the tangential perpendicularity of benchmark muscle, measure and adjust the radius of positioning bar at each ring flat-plate place, perpendicularity, skew degree, from bottom to top adjust the size of positioning bar at each ring flat-plate successively, all trays of the positioning bar that spot welding is adjusted, in welding process, tight gapless between positioning bar and positioning rib supporting block; For preventing stress too concentrated, first spot welding adapter ring Board position, then respectively to upper and lower side each ring adjustment spot welding; Spot welding is carried out in the both sides of supporting plate respectively, and symmetrical spot welding is taked in the spot welding of positioning bar; After the spot welding of each ring flat-plate tray completes, make an accurate selection of centre, origin reference location muscle front a bit, as newel datum mark, all the other positioning bar internal diameter sizes are the relative value of this datum mark, are marked by amount datum mark, with inside micrometer datum mark absolute dimension;
(2) positioning bar string distance between this ring flat-plate of support is checked with positioning bar string apart from detecting model, with newel measurement and positioning muscle radius and radial skew between this ring flat-plate of support, after whole adjustment passed examination, with positioning bar string apart from double end fore-set instrument will between support same ring flat-plate the whole horizontal stretching of positioning bar, with tray fore-set, this ring tray is fixed on support;
(3) welding of tray, during construction welding, 1-2 working face of tray domain symmetry become even number name welder to weld simultaneously, and speed of welding is consistent with direction each other, after all trays on the same ring flat-plate of out frame have welded, next ring could be welded, welded rear removing welding slag;
(4) calculate single hop iron core compensating plate, after iron core each section of precompressed, according to measuring height, determine that lamination compensates the number of plies to during precompressed next time, determine that every iron leg core diameter is folded into the number of plies to compensating plate, make radial compensation sheet and fold into quantitative value;
(5) according to stator core assembling length, every layer of tower connects 1/3 length of a film mode and splices, and in lamination process, raps punching yoke portion and makes it near positioning bar, use dressing stick shaping, and at correspondent section iron core installing insulating lining and vent segment;
(6) after often having folded one section, rap core lamination stack inner circle with rubber hammer or "painted-face" character in opera, make it near positioning bar, often use dressing stick shaping after folded high one section of 20mm; Measure iron core internal diameter; Put at corresponding core packet and connect insulating washer and insulating sleeve; Single hop core length is surveyed with single hop iron core survey tool, and instant shaping in lamination process, every lamination completes one section, before precompressed namely the folded whole shaping of iron core once;
(7) iron core compresses, tooth support on install and adjust, stretching screw, insulating sleeve, butterfly spring, pressure back-up ring, insulating washer, packing ring, nut, nut is to tightening, afterwards with hydraulic elongator repeatedly, symmetrical, jump, the tension order of first intermediate and then both sides, progressively stretching screw, until reach final screwing force.
Further, described erecting device is punching screw rod, and described erecting device is disposed with nut, insulating washer, insulating sleeve, butterfly spring from top to bottom.Adopt the design of butterfly spring gasket construction, iron core long-time running is issuable to be loosened to eliminate.
Further, described take-up device is back stretching screw, and described take-up device is disposed with locknut, packing ring, butterfly spring from top to bottom.Adopt the design of butterfly spring gasket construction, iron core long-time running is issuable to be loosened to eliminate.
Embodiment 2
The present invention includes stator lasmination 1, erecting device 2, take-up device 3 and tooth support 4, described stator lasmination 1 is arranged on described erecting device 2, described erecting device 2 and described take-up device 3 through described tooth support 4, and compress described stator lasmination 1 by described tooth support 4.Described erecting device 2 is punching screw rod, and described erecting device 2 is disposed with nut, insulating washer, insulating sleeve, butterfly spring from top to bottom.Described take-up device 3 is back stretching screw, and described take-up device 3 is disposed with locknut, packing ring, butterfly spring from top to bottom.Assembly technology is:
(1) stator lasmination 1 assembly technology is undertaken by " stator core pressing technique rules ";
(2) during dress pressure stator lasmination 1, adopt interlayer punching be staggered 1/3 overlapping mode and the method for hot pressing, hot pressing adopt electric and magnetic oscillation method, rub by electric and magnetic oscillation, mutual vibration between sheet and sheet the spike material between sheet is polished, last pressurization again makes stator lasmination 1 reach tightness requirement, and this measure is the core slackness phenomenon avoiding causing due to long-time running;
(3) laminated layer method iron core upper and lower side head end lamination adopts rotary laminated layer method.Rotary lamination avoids bed joint, enhances the globality of iron core and magnetic conduction uniformity;
(4) stator lasmination 1 segmentation compresses, and stator lasmination 1 precompressed adopts hydraulic elongator, makes every root take-up device 3 uniform force, thisly press that method is simple, efficiency is high;
(5) in order to prevent teeth portion axial vibration, stator lasmination about 1 both ends adopt bonding technology, make it into as a whole, guarantee unit stator iron core pressing quality to strengthen rigidity.
Above to invention has been detailed description, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (3)
1. a stator lasmination fixing quality control method, comprise stator lasmination, erecting device, take-up device and tooth support, it is characterized in that, described stator lasmination is arranged on described erecting device, described erecting device and described take-up device are through described tooth support, and compress described stator lasmination by described tooth support, adopt erecting device tight stator lasmination, the compression of stator lasmination is except the erecting device united two into one at cylindrical and positioning bar function, at stator lasmination yoke, portion is designed with the take-up device running through iron core, erecting device quantity and circumferentially interlaced arrangement identical with the take-up device quantity at stator lasmination back, the insulating sleeve that 2mm is thick is had outside take-up device, to increase the compression effect of iron core,
Its installation method is:
(1) positioning bar is installed, at benchmark muscle front and side suspention piano wire, measure and adjust radial, the tangential perpendicularity of benchmark muscle, measure and adjust the radius of positioning bar at each ring flat-plate place, perpendicularity, skew degree, from bottom to top adjust the size of positioning bar at each ring flat-plate successively, all trays of the positioning bar that spot welding is adjusted, in welding process, tight gapless between positioning bar and positioning rib supporting block; For preventing stress too concentrated, first spot welding adapter ring Board position, then respectively to upper and lower side each ring adjustment spot welding; Spot welding is carried out in the both sides of supporting plate respectively, and symmetrical spot welding is taked in the spot welding of positioning bar; After the spot welding of each ring flat-plate tray completes, make an accurate selection of centre, origin reference location muscle front a bit, as newel datum mark, all the other positioning bar internal diameter sizes are the relative value of this datum mark, are marked by amount datum mark, with inside micrometer datum mark absolute dimension;
(2) positioning bar string distance between this ring flat-plate of support is checked with positioning bar string apart from detecting model, with newel measurement and positioning muscle radius and radial skew between this ring flat-plate of support, after whole adjustment passed examination, with positioning bar string apart from double end fore-set instrument will between support same ring flat-plate the whole horizontal stretching of positioning bar, with tray fore-set, this ring tray is fixed on support;
(3) welding of tray, during construction welding, 1-2 working face of tray domain symmetry become even number name welder to weld simultaneously, and speed of welding is consistent with direction each other, after all trays on the same ring flat-plate of out frame have welded, next ring could be welded, welded rear removing welding slag;
(4) calculate single hop iron core compensating plate, after iron core each section of precompressed, according to measuring height, determine that lamination compensates the number of plies to during precompressed next time, determine that every iron leg core diameter is folded into the number of plies to compensating plate, make radial compensation sheet and fold into quantitative value;
(5) according to stator core assembling length, every layer of tower connects 1/3 length of a film mode and splices, and in lamination process, raps punching yoke portion and makes it near positioning bar, use dressing stick shaping, and at correspondent section iron core installing insulating lining and vent segment;
(6) after often having folded one section, rap core lamination stack inner circle with rubber hammer or "painted-face" character in opera, make it near positioning bar, often use dressing stick shaping after folded high one section of 20mm; Measure iron core internal diameter; Put at corresponding core packet and connect insulating washer and insulating sleeve; Single hop core length is surveyed with single hop iron core survey tool, and instant shaping in lamination process, every lamination completes one section, before precompressed namely the folded whole shaping of iron core once;
(7) iron core compresses, tooth support on install and adjust, stretching screw, insulating sleeve, butterfly spring, pressure back-up ring, insulating washer, packing ring, nut, nut is to tightening, afterwards with hydraulic elongator repeatedly, symmetrical, jump, the tension order of first intermediate and then both sides, progressively stretching screw, until reach final screwing force.
2. stator lasmination fixing quality control method according to claim 1, is characterized in that, described erecting device is punching screw rod, and described erecting device is disposed with nut, insulating washer, insulating sleeve, butterfly spring from top to bottom.
3. stator lasmination fixing quality control method according to claim 1, is characterized in that, described take-up device is back stretching screw, and described take-up device is disposed with locknut, packing ring, butterfly spring from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695176.8A CN105305740A (en) | 2015-10-24 | 2015-10-24 | Stator lamination mounting quality control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695176.8A CN105305740A (en) | 2015-10-24 | 2015-10-24 | Stator lamination mounting quality control method |
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| CN105305740A true CN105305740A (en) | 2016-02-03 |
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| CN201510695176.8A Pending CN105305740A (en) | 2015-10-24 | 2015-10-24 | Stator lamination mounting quality control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945483A (en) * | 2016-06-20 | 2016-09-21 | 哈尔滨电机厂有限责任公司 | Before-welding adjustment and alignment process for positioning ribs of turbine generator |
| CN107276274A (en) * | 2016-02-09 | 2017-10-20 | 源捷公司 | Rotor assembly manufacturing technology and its structure of generation |
| CN107834786A (en) * | 2017-11-21 | 2018-03-23 | 湖南湘电动力有限公司 | The preparation method that a kind of stretching screw type laminates iron core |
| CN108809010A (en) * | 2018-09-18 | 2018-11-13 | 中国长江动力集团有限公司 | Stator core external pressure assembling device and stator core outer press mounting equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202260654U (en) * | 2011-08-26 | 2012-05-30 | 天津市天发重型水电设备制造有限公司 | Stator iron core structure of water turbine generator |
-
2015
- 2015-10-24 CN CN201510695176.8A patent/CN105305740A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202260654U (en) * | 2011-08-26 | 2012-05-30 | 天津市天发重型水电设备制造有限公司 | Stator iron core structure of water turbine generator |
Non-Patent Citations (1)
| Title |
|---|
| 郭勇 等: "糯扎渡水电站9#～7#机组定子铁芯叠装工艺", 《水利水电技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276274A (en) * | 2016-02-09 | 2017-10-20 | 源捷公司 | Rotor assembly manufacturing technology and its structure of generation |
| CN105945483A (en) * | 2016-06-20 | 2016-09-21 | 哈尔滨电机厂有限责任公司 | Before-welding adjustment and alignment process for positioning ribs of turbine generator |
| CN107834786A (en) * | 2017-11-21 | 2018-03-23 | 湖南湘电动力有限公司 | The preparation method that a kind of stretching screw type laminates iron core |
| CN107834786B (en) * | 2017-11-21 | 2020-03-27 | 湖南湘电动力有限公司 | Manufacturing method of tension screw type laminated iron core |
| CN108809010A (en) * | 2018-09-18 | 2018-11-13 | 中国长江动力集团有限公司 | Stator core external pressure assembling device and stator core outer press mounting equipment |
| CN108809010B (en) * | 2018-09-18 | 2024-03-29 | 中国长江动力集团有限公司 | Stator core external press-fitting device and stator core external press-fitting equipment |
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Application publication date: 20160203 |