CN205039629U - Improve nuclear power and send out officious announcement grooved stator of circumference in motor insulation life -span - Google Patents
Improve nuclear power and send out officious announcement grooved stator of circumference in motor insulation life -span Download PDFInfo
- Publication number
- CN205039629U CN205039629U CN201520813575.5U CN201520813575U CN205039629U CN 205039629 U CN205039629 U CN 205039629U CN 201520813575 U CN201520813575 U CN 201520813575U CN 205039629 U CN205039629 U CN 205039629U
- Authority
- CN
- China
- Prior art keywords
- groove
- stator
- winding
- nuclear power
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Windings For Motors And Generators (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model discloses an improve nuclear power and send out officious announcement grooved stator of circumference in motor insulation life -span, the injury of the out -phase winding of a generator high voltage to motor insulation aim at solving, through the officious announcement fluting of stator core circumference, the realization is closely spaced in the interval of out -phase winding with the phase winding, effectively prevent insulating ageingly, avoid the corona, galvano -cautery and discharging etc. Causes the emergence of short circuit of operating nuclear power turbo generator and insulation breakdown accident, the service life of generator stator winding insulation is prolonged. In addition, set up axial ventilation hole on the great tooth of generator stator, improve the cooling effect of big tooth of generator and yoke, the utility model discloses an officious announcement grooved generator stator of circumference can greatly simplify the generator stator winding and make the mould, adopts many sets of mould coillings to make stator winding gradually burst at the seams when avoiding traditional stator evenly to slot in order to suppress the end winding corona and forms not equidistant huge defect, guarantee nuclear power turbo generator safety, steady operation.
Description
Technical field
The utility model relates to technical field of motors, belongs to electrical engineering field, particularly relates to a kind of stator structure improving the non-homogeneous fluting of circumference of nuclear power generator insulation life.
Background technology
Nuclear power turbo generator is the Grand Equipments of China, and large nuclear-power turbine generator acc power is comparatively large, power grade usually 1000MW and more than; Stator voltage grade is generally the high voltage of 24kV and 27kV, and generator unit stator rated current is trained up to a little Wan An.The electromagnetic load that nuclear power turbo generator is higher and heat load restrict the raising of nuclear power turbo generator capacity.The insulation of nuclear power steam turbine generator stator coil is directly connected to the operational reliability of generator, life-span and technical-economic index.Because the stator coil of nuclear power turbo generator is in operation, the effect of the factors such as high voltage, high temperature, alternating electromagnetic force to be stood for a long time.High-tension effect makes dielectric extend loss in time to strengthen, and accelerates ageing of insulation, thus easily cause corona, galvano-cautery, even cause electric discharge, cause the short circuit of operating nuclear power turbo generator and insulation breakdown.The thermal stress of generator stator insulator Tensile and compression when the temperature is changed; Insulate simultaneously and be in for a long time in heater, temperature rise is too high can accelerate ageing of insulation.
For the high-tension Stator End Winding of turbo generator, quite high potential difference is had between involute, involute electric potential uniform in homophase distributes, and potential difference is comparatively large between alternate involute, thus between existing high-rating generator capacity 600MW and above stator coil end involute and nose joint design be that out-phase gap ratio is large with spaced apart.Often adopt during design and not organize coil spread trace mutually and successively decrease or the change of length turning mouth, make the large and nose joint distance increase of the winding space between out-phase, and even with spaced apart.But this structure, whole stator coil needs many molds in the mill, comparatively complicated.Therefore, exploitation is a kind of improves nuclear power generator insulation life, and the novel high-capacity nuclear power stator of steam turbine generator structure simultaneously simplifying winding mfg. moulding die is most important.
Summary of the invention
The utility model technical issues that need to address how to improve nuclear power generator stator winding insulation useful life, simplifies generator unit stator winding mfg. moulding die simultaneously, ensures nuclear power turbo generator safety, stable operation.
In order to solve above technical problem, the utility model discloses a kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life, by electricity generator stator core circumference non-homogeneous fluting, realize generator unit stator and be less than out-phase winding spacing with phase winding spacing, effectively prevent ageing of insulation, avoid corona, galvano-cautery and electric discharge etc. to cause the generation of the short circuit of operating nuclear power turbo generator and dielectric breakdown accident, improve stator winding insulation in generator useful life.In addition, axial ventilation hole offered by stator comparatively canine tooth, improve the cooling effect of generator unit stator canine tooth and yoke.
In order to suppress End winding corona to adopt many molds coiling to make stator winding involute form the great drawback of unequal-interval in the past when a kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life disclosed in the utility model can solve that different stator is evenly slotted effectively, improve the manufacture efficiency of generator unit stator winding.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, more completely the utility model can be understood better.Accompanying drawing described herein is used to provide further understanding of the present utility model, and embodiment and explanation thereof, for explaining the utility model, are not formed improper restriction of the present utility model.
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the utility model better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.
Fig. 1 is the stator of the non-homogeneous fluting of generator being applicable to single layer winding;
Fig. 2 is the stator of the non-homogeneous fluting of generator being applicable to two layer winding;
Fig. 3 is the non-homogeneous stator opening different depth groove of generator being applicable to two layer winding;
Fig. 4 is upper and lower layer winding and layer insulation in homophase groove and out-phase groove.
Embodiment
With reference to Fig. 1-4, embodiment of the present utility model is described.
For enabling above-mentioned purpose, feature and advantage become apparent more, are described in further detail the utility model below in conjunction with the drawings and specific embodiments.
Embodiment one: composition graphs 1 illustrates present embodiment, a kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life of present embodiment, circumferentially offers the rectangular channel 2 of the span such as non-distribution in direction at stator core 1.
Embodiment two: composition graphs 1 illustrates present embodiment, the generator unit stator of the employing single layer winding described in present embodiment, consecutive roots is organized facewidth m between groove mutually and is greater than facewidth n between same pole phase group groove, and between same pole phase group groove, facewidth n is equal; Consecutive roots is organized mutually between groove and stator tooth 3 center line is offered axial ventilation hole 4-1, realizes organizing stator tooth 3 and stator yoke 5 between groove mutually to consecutive roots and cools.
Embodiment three: composition graphs 2 illustrates present embodiment, the generator unit stator of the employing two layer winding described in present embodiment, between homophase groove 2-1, facewidth G is less than facewidth H between out-phase groove 2-2, and between the homophase groove 2-1 of arbitrary neighborhood, the facewidth is equal.Consecutive roots is organized mutually on stator canine tooth 9 center line between groove and between out-phase groove and is offered axial ventilation hole 4-2, to organize mutually between groove and between out-phase groove, stator canine tooth 9 and stator yoke 5 cool to consecutive roots; For stator 54 groove, by A-Z-B-X-C-Y60 degree Lithofacies dividing, winding pitch for 23, stator slot is counterclockwise numbered #1-#54; The separation of #1-#5 groove (A-A), #10-#14 groove (Z-Z), #19-#23 groove (B-B), #28-#32 groove (X-X), #37-#41 groove (C-C), #46-#50 groove (Y-Y) is less than the separation of #6-#9 groove (A-Z), #15-#18 groove (Z-B), #24-#27 groove (B-X), #33-#36 groove (X-C), #42-#45 groove (C-Y), #51-#54 groove (Y-A).
Embodiment four: composition graphs 3 illustrates present embodiment, the generator unit stator of the two layer winding described in present embodiment, according to specific needs, except homophase groove 2-1 and out-phase groove 2-2 is set to same structure, out-phase groove 2-2 groove depth can also be set to the structure being greater than homophase groove 2-1 groove depth, and then make the layer insulation 8-2 thickness between the upper strata winding 6-2 of out-phase groove 2-2 and lower floor winding 7-2 be greater than layer insulation 8-1 thickness between the upper strata winding 6-1 of homophase groove 2-1 and lower floor winding 7-1; The upper strata winding 6-1 of homophase groove 2-1 and the upper strata winding 6-2 of out-phase groove 2-2 is measure-alike; The lower floor winding 7-1 of homophase groove 2-1 and the lower floor winding 7-2 of out-phase groove 2-2 is measure-alike.
Embodiment five: composition graphs 4 illustrates present embodiment, the two layer winding generator unit stator of the different slots degree of depth described in present embodiment, stator consecutive roots is organized mutually on stator canine tooth 9 center line between groove and between out-phase groove and is also offered axial ventilation hole 4-2, realizes the cooling to stator canine tooth 9.
Embodiment six: present embodiment is described in conjunction with Fig. 1-2, the stator of the single layer winding described in present embodiment and two layer winding equivalent gullet depth non-homogeneous fluting only need adopt a set of or two molds when manufacturing, the non-homogeneous notching construction of stator equivalent gullet depth is while solution prevents corona, greatly can reduce the complexity of stator coil mfg. moulding die, in order to suppress End winding corona to adopt many molds coiling to make stator winding involute form the great drawback of unequal-interval when avoiding traditional stator evenly to slot.
Although the foregoing describe embodiment of the present utility model, but those skilled in the art is to be understood that, these embodiments only illustrate, those skilled in the art, when not departing from principle of the present utility model and essence, can carry out various omission, replacement and change to the details of said method and system and cooling structure of stator.Such as, merge said method step, thus then belong to scope of the present utility model according to the function that the method that essence is identical performs essence identical to realize the identical result of essence.Therefore, scope of the present utility model is only defined by the appended claims.
Facies tract belonging to levels winding (54 grooves, pitch 23) in table 1 stator slot
Claims (5)
1. improve a stator for the non-homogeneous fluting of circumference of nuclear power generator insulation life, it is characterized in that: the rectangular channel (2) of nuclear power generator stator core (1) circumferentially direction is the span distribution such as non-.
2. a kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life according to claim 1, it is characterized in that: for the generator unit stator adopting single layer winding, consecutive roots is organized the facewidth (m) between groove mutually and is greater than the facewidth (n) between same pole phase group groove, and between same pole phase group groove, the facewidth (n) is equal; Consecutive roots is organized mutually on stator tooth between groove (3) center line and is offered axial ventilation hole (4-1), organizes stator tooth between groove (3) mutually and stator yoke (5) cools to consecutive roots.
3. a kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life according to claim 1, it is characterized in that: for the generator unit stator adopting two layer winding, between homophase groove (2-1), the facewidth (G) is less than the facewidth (H) between out-phase groove (2-2), and between the homophase groove (2-1) of arbitrary neighborhood, the facewidth is equal, consecutive roots is organized mutually on stator canine tooth (9) center line between groove and between out-phase groove and is offered axial ventilation hole (4-2), to organize mutually between groove and between out-phase groove, stator canine tooth (9) and stator yoke (5) cool to consecutive roots, for stator (54) groove, press (A-Z-B-X-C-Y) 60 degree of Lithofacies dividing, winding pitch for 23, stator slot is counterclockwise numbered (#1-#54), (#1-#5) groove (A-A), (#10-#14) groove (Z-Z), (#19-#23) groove (B-B), (#28-#32) groove (X-X), (#37-#41) groove (C-C), (#46-#50) separation of groove (Y-Y) is less than (#6-#9) groove (A-Z), (#15-#18) groove (Z-B), (#24-#27) groove (B-X), (#33-#36) groove (X-C), (#42-#45) groove (C-Y), (#51-#54) separation of groove (Y-A).
4. a kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life according to claim 3, it is characterized in that: according to specific needs, except homophase groove (2-1) and out-phase groove (2-2) are set to same structure, out-phase groove (2-2) groove depth can also be set to the structure being greater than homophase groove (2-1) groove depth, and then make layer insulation (8-2) thickness between the upper strata winding (6-2) of out-phase groove (2-2) and lower floor's winding (7-2) be greater than layer insulation (8-1) thickness between the upper strata winding (6-1) of homophase groove (2-1) and lower floor's winding (7-1), the upper strata winding (6-1) of homophase groove (2-1) is measure-alike with the upper strata winding (6-2) of out-phase groove (2-2), lower floor's winding (7-1) of homophase groove (2-1) is measure-alike with lower floor's winding (7-2) of out-phase groove (2-2), consecutive roots is organized mutually on stator canine tooth (9) center line between groove and between out-phase groove and is also offered axial ventilation hole (4-2), realizes the cooling to stator canine tooth (9).
5. a kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life according to claim 1 or 2 or 3 or 4, it is characterized in that: when the stator for single layer winding and the non-homogeneous fluting of two layer winding equivalent gullet depth manufactures, only need adopt a set of or two molds, the non-homogeneous notching construction of stator equivalent gullet depth is while solution prevents corona, greatly can reduce the complexity of stator coil mfg. moulding die, in order to suppress End winding corona to adopt many molds coiling to make stator winding involute form the great drawback of unequal-interval when avoiding traditional stator evenly to slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520813575.5U CN205039629U (en) | 2015-10-21 | 2015-10-21 | Improve nuclear power and send out officious announcement grooved stator of circumference in motor insulation life -span |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520813575.5U CN205039629U (en) | 2015-10-21 | 2015-10-21 | Improve nuclear power and send out officious announcement grooved stator of circumference in motor insulation life -span |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205039629U true CN205039629U (en) | 2016-02-17 |
Family
ID=55298499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520813575.5U Expired - Fee Related CN205039629U (en) | 2015-10-21 | 2015-10-21 | Improve nuclear power and send out officious announcement grooved stator of circumference in motor insulation life -span |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205039629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226851A (en) * | 2015-10-21 | 2016-01-06 | 哈尔滨理工大学 | A kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life |
-
2015
- 2015-10-21 CN CN201520813575.5U patent/CN205039629U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226851A (en) * | 2015-10-21 | 2016-01-06 | 哈尔滨理工大学 | A kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life |
| CN105226851B (en) * | 2015-10-21 | 2018-01-19 | 哈尔滨理工大学 | A kind of stator for the non-homogeneous fluting of circumference for improving nuclear power generator insulation life |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200328642A1 (en) | Manufacturing method for a conductor disposed within an insulator | |
| CN101577454A (en) | Three-phase water-cooling permanent magnet synchronous motor | |
| CN105226851A (en) | A kind of stator improving the non-homogeneous fluting of circumference of nuclear power generator insulation life | |
| CN103125003A (en) | Transformer winding | |
| Kasprzak et al. | Thermal analysis of a three-phase 24/16 switched reluctance machine used in HEVs | |
| US10784728B2 (en) | Rotor for an electrical machine with push-on windings | |
| CN205039629U (en) | Improve nuclear power and send out officious announcement grooved stator of circumference in motor insulation life -span | |
| CN109301950B (en) | Stator winding and disc motor | |
| KR101675161B1 (en) | Dynamoelectric machine rotors having enhanced heat transfer and method therefor | |
| JP2012524388A (en) | Winding and winding manufacturing method | |
| CN101860152A (en) | Three-phase AC asynchronous motor for YDAX series of electric automobiles | |
| CN107968509A (en) | Alternating current generator with flat wire stator winding | |
| WO2024026824A1 (en) | Flat wire electric motor and stator thereof | |
| EP1879279B1 (en) | Stator of a turbo generator | |
| CN112119571A (en) | Electric machine and hybrid electric air vehicle | |
| CN210110485U (en) | Coil structure for high overload capacity distribution transformer | |
| CN210867326U (en) | Parallel phase winding, stator and motor | |
| CN203747606U (en) | Permanent-magnet alternating-current servo motor with novel stator structure | |
| CN209046380U (en) | A kind of stator winding and disc type electric machine | |
| CN208461552U (en) | Stator punching sheet, stator and motor | |
| CN218850489U (en) | Insulating skeleton of high-voltage brushless motor | |
| CN204906142U (en) | Rotor squirrel cage, rotor and motor | |
| CN204290663U (en) | For the stator module of centralized winding synchronous machine | |
| CN204243982U (en) | There is the motor case cooling structure of the open thermal column in interval | |
| CN204559350U (en) | Abnormity copper bar rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20181021 |