CN210927245U - Insulation structure of 10kV sealed motor - Google Patents
Insulation structure of 10kV sealed motor Download PDFInfo
- Publication number
- CN210927245U CN210927245U CN201922191487.7U CN201922191487U CN210927245U CN 210927245 U CN210927245 U CN 210927245U CN 201922191487 U CN201922191487 U CN 201922191487U CN 210927245 U CN210927245 U CN 210927245U
- Authority
- CN
- China
- Prior art keywords
- stator coil
- wire
- stator core
- stator
- insulation
- 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.)
- Active
Links
Images
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model belongs to the technical field of the motor, concretely relates to 10kV sealed machine's insulation system. The insulation structure of the sealed motor comprises a stator core, a stator coil and a cushion block, wherein the stator core is provided with a lower wire slot; the stator coil comprises many magnet wires, and the magnet wire includes the copper flat wire and winds the insulating material of package outward, and the stator coil includes straight line portion and tip, and the straight line portion embedding of stator coil goes down the inslot of stator core, and the tip of stator coil is located outside the stator core, and the tip of stator coil is equipped with the end hoop, and its characterized in that, stator coil pass through the line and link to each other with the lead wire, magnet wire, end hoop and line all wrap first insulating layer and second insulating layer in proper order, wrap first cladding layer, second cladding layer and third cladding layer in proper order outside the junction of line and lead wire. Adopt the utility model discloses a 10kV sealing motor insulation system can satisfy NEMA MG1 standard sealing motor adaptability test requirement.
Description
Technical Field
The utility model belongs to the technical field of the motor, concretely relates to 10kV satisfies insulation system of NEMA standard sealing motor.
Background
Along with the connection with international technology, more and more domestic and foreign motor users require that 10kV motors are manufactured by adopting international standards so as to ensure the safe and reliable operation of the motors. The 10kV canned winding machine was typically tested for suitability according to the NEMA MG1 standard. The suitability test requires immersing or spraying the wound stator in water containing a wetting agent, requiring the surface tension of the water to be reduced to 31 dynes/cm and below at 25 ℃. Carrying out insulation resistance test and voltage resistance test on the stator with the winding immersed or sprayed with water for half an hour, wherein the insulation resistance test requires applying 500V direct current, and the insulation resistance value is not lower than 5 times of rated voltage +5 after 10 minutes; the voltage resistance test is a 60Hz alternating current high voltage test of the winding, and the high voltage is 1.15 times of rated voltage root mean square voltage and lasts for 1 minute without breakdown. Before and after the voltage resistance test, insulation resistance test is carried out.
Chinese patent No. CN204290544U discloses a pulse-resistant insulation structure of 10kV increased-safety motor, which introduces the connection mode of stator core, stator coil, end hoop, stator coil, cushion block, etc., and provides a simple insulation structure of 10kV increased-safety motor, but it cannot meet the adaptability test of NEMA standard sealed motor.
Therefore, it is important to provide an insulation structure of a 10kV sealed motor meeting NEMA standard.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem in the prior art, the utility model provides a 10kV sealing motor's insulation system. The insulation structure of the sealed motor meets the adaptability test requirement of the NEMA MG1 standard sealed motor.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
an insulation structure of a 10kV sealed motor comprises a stator core, a stator coil and a cushion block, wherein the stator core is provided with a lower wire slot; the stator coil comprises many magnet wires, and the magnet wire includes the copper flat wire and winds the insulating material of package outward, and the stator coil includes straight line portion and tip, and the straight line portion embedding stator core of stator coil rolls off the production line inslot, and stator coil's tip is located outside the stator core, and stator coil's tip is equipped with the end hoop, and stator coil passes through the line and links to each other with the lead wire, magnet wire, end hoop and line all wrap first insulating layer and second insulating layer in proper order, and the first cladding layer of line and lead wire's junction outside cladding in proper order, second cladding layer and third cladding layer.
Preferably, the first insulating layer is formed by winding 6-14 layers of mica tapes with less glue in a half-lap wrapping manner, and the second insulating layer is formed by winding 1-4 layers of anti-corona tapes or polyester tapes on the first insulating layer in a half-lap wrapping manner; the first coating layer is formed by winding 2-7 layers of multi-glue mica tapes in a half-lap-wrapping mode, the second coating layer is formed by winding 4-12 layers of self-adhesive tapes on the first coating layer in a half-lap-wrapping mode, and the second coating layer is sleeved with a heat-shrinkable tube and is subjected to heat shrinkage to form a third coating layer.
Preferably, the stator core with the stator coil, the cushion block, the end hoop and the connecting wire is impregnated with resin to form 2-4 resin layers; i.e. 2-4 times by v.p.i impregnation of the resin.
Preferably, the heat shrinkable tube is a low-temperature flame-retardant heat shrinkable tube and is prepared from conventional commercial products.
Preferably, the insulating material that copper flat line was wrapped outward is glass silk and film in proper order, and the insulation thickness of unilateral is 0.2 ~ 0.4 mm. The material of the film may be polyester, polyimide, or the like, but is not limited to polyester and polyimide.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the insulation structure of the sealed motor of the utility model meets the adaptability test requirement of the sealed motor of NEMA MG1 standard;
2. the utility model discloses simple structure to the winding stator that has that immerses or spray water half an hour can carry out insulation resistance test and withstand voltage test.
Drawings
Fig. 1 is a schematic structural diagram of an insulation structure of a 10kV sealed motor according to the present invention;
fig. 2 is a sectional view of the stator coil in fig. 1;
FIG. 3 is a schematic view of the connection between the lead wires and the connecting wires in FIG. 1;
in the figure: the stator core is 1, the stator coil is 2, the cushion block is 3, the end hoop is 4, the connecting line is 5, the lead wire is 6, the electromagnetic wire is 7, the first insulating layer is 8, the second insulating layer is 9, the first coating layer is 10, the second coating layer is 11, and the third coating layer is 12.
Detailed Description
The present invention will be further described with reference to the following examples and drawings, but the present invention is not limited thereto. In the description of the present invention, it should be noted that, for the orientation words, such as the terms "inside", "outside", etc., indicating the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, and should not be construed as limiting the specific scope of the present invention.
It is noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
Example 1
As shown in fig. 1, the insulation structure of a 10kV sealed motor of the present invention comprises a stator core 1, a stator coil 2 and a cushion block 3, wherein the stator core 1 is provided with a winding slot (not shown in the figure); the stator coil 2 is composed of a plurality of electromagnetic wires 7, the electromagnetic wires 7 are formed by winding copper-clad flat wires by insulating materials, the stator coil 2 comprises a straight line part and an end part, the straight line part of the stator coil 2 is embedded into a lower slot of the stator core 1, the end part of the stator coil 2 is positioned outside the stator core 1, the end part of the stator coil 2 is provided with an end hoop 4 (the end hoop 4 is fixed on the outer ring of the end part of the stator winding) and is connected with the lead wire 6 through a connecting wire 5, the electromagnetic wires 7, the end hoop 4 and the connecting wire 5 are sequentially coated with a first insulating layer 8 and a second insulating layer 9, and the first coating layer 10, a second coating layer 11 and a third coating layer 12 are sequentially coated outside the.
The first insulating layer 8 is formed by winding 6-14 layers of mica tapes with less glue in a half-lap wrapping mode, and the second insulating layer 9 is formed by winding 1-4 layers of anti-corona tapes or polyester tapes on the first insulating layer 8 in a half-lap wrapping mode; the first coating layer 10 is formed by winding 2-7 layers of multi-glue mica tapes in a half-lap-wrapping mode, the second coating layer 11 is formed by winding 4-12 layers of self-adhesive tapes on the first coating layer 10 in a half-lap-wrapping mode, and the second coating layer 11 is sleeved with a low-temperature flame-retardant heat-shrinkable tube and is subjected to heat shrinkage to form a third coating layer 12. The stator core 1 with the stator coil 2, the spacer 3, the end band 4 and the connecting wire 5 is impregnated with resin through v.p.i. and baked 2-4 times (the impregnated resin is enough by using the conventional technique in the art). The insulating material that the copper flat wire was wrapped outward is glass silk and film in proper order, and the unilateral insulating material thickness of wrapping is 0.2 ~ 0.4 mm.
It should be noted that the stator core 1, the end hoop 4, the spacer 3, and the magnet wire 7 are all in the prior art, and conventional technologies in the art are adopted, and are not described herein again.
Adopt the utility model discloses a device carries out NEMA standard sealing motor's adaptability test (specifically, the first insulating layer is formed by 8 layers of few gluey mica tape with the mode winding of half lap package, the second insulating layer is formed by 1 layer of dizzy preventing area or polyester tape with the mode winding of half lap package on the first insulating layer, first cladding is formed by 5 layers of many gluey mica tape with the mode winding of half lap package, the second cladding is formed by 4 layers of self-adhesive tape with the mode winding of half lap package on first cladding, cover the fire-retardant pyrocondensation pipe of low temperature on the second cladding and form the third cladding through the pyrocondensation, V.P.I impregnating resin dries 3 times, forms 3 layers of resin promptly), see the table below as a result.
Therefore, adopt the utility model discloses an insulation system can satisfy NEMA MG1 standard sealing motor adaptability test requirement well.
Claims (5)
1. An insulation structure of a 10kV sealed motor comprises a stator core, a stator coil and a cushion block, wherein the stator core is provided with a lower wire slot; the stator coil comprises many magnet wires, and the magnet wire includes the copper flat wire and winds the insulating material of package outward, and the stator coil includes straight line portion and tip, and the straight line portion embedding of stator coil goes down the inslot of stator core, and the tip of stator coil is located outside the stator core, and the tip of stator coil is equipped with the end hoop, and its characterized in that, stator coil pass through the line and link to each other with the lead wire, magnet wire, end hoop and line all wrap first insulating layer and second insulating layer in proper order, and the first cladding layer, second cladding layer and third cladding layer are wrapped in proper order to the junction outside of line and lead wire.
2. The insulation structure of a 10kV canned motor according to claim 1, wherein the first insulation layer is formed by winding 6 to 14 layers of mica tapes in a half-lap wrapping manner, and the second insulation layer is formed by winding 1 to 4 layers of corona-proof tapes or polyester tapes on the first insulation layer in a half-lap wrapping manner; the first coating layer is formed by winding 2-7 layers of multi-glue mica tapes in a half-lap-wrapping mode, the second coating layer is formed by winding 4-12 layers of self-adhesive tapes on the first coating layer in a half-lap-wrapping mode, and the second coating layer is sleeved with a heat-shrinkable tube and is formed into a third coating layer after heat shrinkage.
3. An insulation structure of a 10kV sealed electric motor according to claim 1, wherein the stator core with the stator coil, the spacer, the end bell and the connecting wire is impregnated with resin to form 2 to 4 resin layers.
4. The insulation structure of a 10kV sealed motor according to claim 2, wherein the heat shrinkable tube is a low-temperature flame-retardant heat shrinkable tube.
5. The insulation structure of the 10kV sealed motor according to claim 1, wherein the insulation materials wrapped outside the copper flat wire are glass fiber and thin film in sequence, and the insulation thickness of one side is 0.2-0.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922191487.7U CN210927245U (en) | 2019-12-10 | 2019-12-10 | Insulation structure of 10kV sealed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922191487.7U CN210927245U (en) | 2019-12-10 | 2019-12-10 | Insulation structure of 10kV sealed motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210927245U true CN210927245U (en) | 2020-07-03 |
Family
ID=71344852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922191487.7U Active CN210927245U (en) | 2019-12-10 | 2019-12-10 | Insulation structure of 10kV sealed motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210927245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564364A (en) * | 2020-12-18 | 2021-03-26 | 重庆赛力盟电机有限责任公司 | Insulation structure of high-voltage motor |
-
2019
- 2019-12-10 CN CN201922191487.7U patent/CN210927245U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564364A (en) * | 2020-12-18 | 2021-03-26 | 重庆赛力盟电机有限责任公司 | Insulation structure of high-voltage motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02184234A (en) | High-voltage insulating mechanism of electric machine | |
| CN102394125A (en) | Self-adhesive glassfiber wrapped enameled flat copper wire for wind driven generator | |
| CN103630807B (en) | Partial discharge model for staggering of stress cone of 10kV cable intermediate joint | |
| CN210927245U (en) | Insulation structure of 10kV sealed motor | |
| CN202334193U (en) | Sealing structure for winding lead | |
| CN211455448U (en) | Novel encapsulation coating inductor | |
| CN201219039Y (en) | Aluminum stranded wire for dry-type reactor | |
| CN103401377A (en) | Method for manufacturing stator coil insulation structure of tidal current generator | |
| CN208848700U (en) | Novel PFC inductance | |
| CN209461225U (en) | A kind of solid insulation high-voltage capacitance sleeving core | |
| WO2020237723A1 (en) | Alternating-current and direct-current hybrid submarine cable for offshore wind power | |
| CN220122666U (en) | Rotor groove insulation structure | |
| CN211788320U (en) | Corona-resistant ultrathin insulated electromagnetic wire | |
| CN221149785U (en) | Structure for reinforcing insulation strength of lead | |
| CN212782839U (en) | Corrosion-resistant environment-friendly aromatic polyamide paper-wrapped winding wire | |
| CN109065236A (en) | A kind of anti-freeze cable and its production method | |
| CN219778562U (en) | Self-adhesive silk covered wire | |
| CN113223758B (en) | Prefabricated branch cable and production process thereof | |
| CN217181866U (en) | Single-core silicon rubber high-voltage motor lead wire | |
| CN202856296U (en) | 10 kV cable testing terminal | |
| CN103138505A (en) | Winding lead seal structure | |
| CN217486297U (en) | Novel dampproofing belt heater of using of high-voltage motor stator winding and terminal box | |
| CN202694843U (en) | Excitation wire | |
| CN219476471U (en) | Energy-saving switch transformer | |
| CN215451059U (en) | Flat insulated enameled wire and inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |