CN202840742U - Pole glue-injected hermetic fixing structure with glass fiber sleeve - Google Patents
Pole glue-injected hermetic fixing structure with glass fiber sleeve Download PDFInfo
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- CN202840742U CN202840742U CN 201220546876 CN201220546876U CN202840742U CN 202840742 U CN202840742 U CN 202840742U CN 201220546876 CN201220546876 CN 201220546876 CN 201220546876 U CN201220546876 U CN 201220546876U CN 202840742 U CN202840742 U CN 202840742U
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Abstract
The utility model relates to a pole glue-injected hermetic fixing structure with a glass fiber sleeve and applies to large hydro-generators and generator motors. The pole glue-injected hermetic fixing structure with the glass fiber sleeve has the advantages that no welded structure is provided during mounting, damage of insulating Nomex paper on poles is avoided when an iron support plate in the traditional structure is welded, and electrical safety of a generator pole winding is guaranteed effectively; the glass fiber sleeve expands in the radial direction after glue injection, sectional perimeter of the sleeve is increased, creepage distance of a pole core caused by a pole coil is increased and electrical safety of the generator pole winding is guaranteed effectively; the pole glue-injected hermetic fixing structure with the glass fiber sleeve fully satisfies safety of the hydro-generator pole winding under various conditions; the pole glue-injected hermetic fixing structure with the glass fiber sleeve is simple in structure and easy to operate, and pole assembly and manufacture processes are simplified; and the pole glue-injected hermetic fixing structure with the glass fiber sleeve bridges the domestic gap, with technical indexes reaching home and abroad advanced levels.
Description
Technical field: the utility model relates to a kind of magnetic pole injecting glue glass fiber bobbin seal fixed structure.
Background technology:
Large-sized water turbine generator and pumped storage unit generation motor, the reliability to the mount fixing structure of magnetic pole has very high requirement usually when design power generator rotor magnetic pole structure.The magnetic pole winding is to satisfy the safe operation of water-wheel generator magnetic pole under various operating modes when motor moves; usually require the magnetic pole fixed structure firm; the structural reliability that can bear suddenly-applied short circuit, start/stop machine or even fly in the ease situation pole coil to be fixed and the requirement of mechanical performance are satisfied magnetic pole in expansion and the contraction of bearing under the hot and cold state.Pole(cell) insulation and turn-to-turn insulation are made moist, short circuit because ambient humidity greasy dirt large, that long-time running accumulates very easily causes in hydroelectric plant itself, so this structure is also very necessary to the safeguard protection of magnetic pole pole(cell) insulation and turn-to-turn insulation electric property.
Tradition water-wheel generator magnetic pole sealing fixed structure adopts at magnetic pole dove tail lateral coil surface coverage insulating support plate, and welding shell feed plate in insulating support plate top is welded as a whole itself and pole core.But traditional magnetic pole sealing fixed structure is in the process of welding shell feed plate, high-temperature soldering point is by chance near the pole(cell) insulation of magnetic pole, easy scaling loss pole(cell) insulation material, pole(cell) insulation after the carbonization will not possess insulating capacity, increase magnetic pole and carry out the puncture under withstand voltage test, the in service and unusual service condition, creepage hidden danger.Traditional structure is relatively complicated simultaneously, and technical process is also complicated.
Summary of the invention: provide that a kind of technique is simple, easy to operate, thermal diffusivity is good, the magnetic pole injecting glue glass fiber bobbin seal fixed structure of electric property and reliable in mechanical performance order of the present utility model.
The technical solution of the utility model is:
A kind of magnetic pole injecting glue glass fiber bobbin seal fixed structure, it is characterized in that: with the dove tail side milling groove of pole core, determine the gap of geomery and pole coil and the iron core of pole core dove tail side groove according to the pipe diameter size of employed glass fiber sleeve pipe, the glass fiber sleeve pipe is embedded in the pole core dove tail side groove, the glass fiber sleeve pipe that embeds in the pole core dove tail side groove is carried out injecting glue, glass fiber sleeve pipe after making gap between pole core groove and the pole coil by injecting glue is filled full, by whole magnetic pole is heated, glass fiber sleeve pipe after injecting glue is expanded solidifies, and realizes the sealing of magnetic pole and fixing.
Described pole core dove tail side groove, grooved is snap-type.Can make the glass fiber sleeve pipe after the curing embed firmly and be fixed in the groove, the glass fiber sleeve pipe after realizing solidifying is to the fixation of pole coil.For satisfying magnetic pole sealing fixed structure, employed glass fiber shell material is the composite construction that the glass fiber sheath cooperates the expanded glass tow, makes the glass fiber sleeve pipe have the performance that expands behind the injecting glue.Wherein the glass fiber sheath is netted braiding, in caliber direction and length direction ductility is arranged all, especially the expansion rate in the caliber direction can reach more than 30%, guarantees that effectively the glass fiber sleeve pipe behind the injecting glue is full with the gap-fill of groove unshakable in one's determination and pole coil, gapless.The expanded glass tow is paved into by a lot of root glass fiber orientations, and every glass fiber is small ripple curved shape, and its effect is to be conducive to inject glue to fill full, expansion at the glass fiber inside pipe casing, and is good to the impregnability of glue.Injection glue is comprised of low-viscosity epoxy resin, fatty acid anhydride curing agent etc., and this injection adhesiveness is low, do not contain the fugitive constituent such as solvent, be conducive to injection process and guarantee its in glass filament bundle, fills reach mobile.
The utlity model has following advantage:
1) the utility model is different from traditional magnetic pole sealing fixed structure, insulating support plate, the shell feed plate of the magnetic pole dove tail side in traditional magnetic pole sealing fixed structure have been cancelled, only use the glass fiber sleeve pipe of injecting glue to fix, easy operating simple in structure, save material, strengthened the heat-sinking capability of pole coil.
2) the glass fiber sleeve pipe after the curing cooperates groove unshakable in one's determination to be fixed on firmly pole coil on the pole core, structural reliability and requirement of mechanical strength when when satisfying generator designs fully this position being born runaway speed, and guarantee magnetic pole catch a cold thermal change when affecting to advantages such as the structural reliability at this position and requirement of mechanical strength.
3) the injecting glue glass fiber bobbin seal fixed structure that adopts of the utility model, the curing glue of glass fiber sleeve pipe and injection thereof is insulating material, have very high mechanical strength and electric insulation intensity after the curing, can avoid in the magnetic pole assembling process, sneaking into the situation of conductive materials or damage pole(cell) insulation fully.
4) the glass fiber sleeve pipe that expands behind the injecting glue fills up the gap between groove unshakable in one's determination and pole coil good airproof performance fully.Part in pole core outer surface and pole coil surface bulging has increased pole coil to the creepage distance between pole core, has improved the margin of safety of electric insulation.
Description of drawings:
Fig. 1 is magnetic pole sealing fixed structure schematic diagram
Fig. 2 is glass fiber sleeve pipe caliber direction schematic diagram
Fig. 3 is glass fiber sleeve pipe outer protective sleeve schematic diagram
Embodiment:
As shown in Figure 1, a kind of magnetic pole injecting glue glass fiber bobbin seal fixed structure mills groove with pole core 1 dove tail side 2, and groove 3 design shapes have bayonet socket, guarantee the glass fiber sleeve pipe 4 after groove unshakable in one's determination can block curing.Pipe diameter size according to employed glass fiber sleeve pipe 4 designs the geomery of pole core dove tail side groove 3 and the gap of pole coil 5 and unshakable in one's determination 1.
As shown in Figures 2 and 3, glass fiber sleeve pipe 4 is comprised of two parts: glass fiber sheath 8 and expanded glass silk 7 form.
As shown in Figure 1, the glass fiber sleeve pipe 4 whole circles before the injecting glue are embedded the gap of groove 3 unshakable in one's determination and pole coil 5, guarantee that glass fiber sleeve pipe 4 embeds between groove 3 unshakable in one's determination and the pole coil 5 fully, fixes two terminations of glass fiber sleeve pipe 4.Adopt special-purpose injecting glue machine that glass fiber sleeve pipe 4 is carried out the injection of segmentation pinprick, the syringe needle of glue-injection machine is thrust in the glass fiber sleeve pipe 4, machining pressurization is to the prior deployed injection glue of its injection.As shown in Figures 2 and 3, injection glue infiltrates, flows along glass filament bundle 7 direction of glass fiber sleeve pipe 4, and glass fiber sleeve pipe 4 expands in the caliber direction, until that local injection glue is filled is full, stop injecting glue after evenly.Adopt the segmentation that uses the same method glass fiber sleeve pipe 4 whole injecting glues of whole are full, expand, gap interference between pole core 1 groove and the pole coil 5 is filled, glass fiber sleeve pipe 4 after the expansion is respectively to groove 3 outside directions unshakable in one's determination and the outstanding 7-10mm in pole coil surface, the cross section of glass fiber sleeve pipe 4 outside groove 3 unshakable in one's determination is fan-shaped, and fan-shaped camber line has increased the creepage distance of 5 pairs of pole core doves of pole coil tail side 2 accordingly.
After finishing behind the injecting glue whole magnetic pole is put into baking oven at 130 ℃ ± 5 ℃ lower heating 20h, injecting glue glass fiber sleeve pipe 4 and magnetic pole pole(cell) insulation 6 are solidified fully, finish the sealing fixation to magnetic pole.
Claims (2)
1. magnetic pole injecting glue glass fiber bobbin seal fixed structure, it is characterized in that: the dove tail side (2) of pole core (1) is milled groove, determine the geomery of pole core dove tail side groove (3) and the gap of pole coil (5) and (1) unshakable in one's determination according to the pipe diameter size of employed glass fiber sleeve pipe (4), glass fiber sleeve pipe (4) is embedded in the pole core dove tail side groove (3), the glass fiber sleeve pipe (4) that embeds in the pole core dove tail side groove (3) is carried out injecting glue, glass fiber sleeve pipe (4) after making gap between pole core groove (3) and the pole coil (5) by injecting glue is filled full, by whole magnetic pole is heated, glass fiber sleeve pipe (4) after injecting glue is expanded solidifies, and realizes the sealing of magnetic pole and fixing.
2. a kind of magnetic pole injecting glue glass fiber bobbin seal fixed structure according to claim 1, it is characterized in that: described pole core dove tail side groove (3), grooved are snap-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220546876 CN202840742U (en) | 2012-10-24 | 2012-10-24 | Pole glue-injected hermetic fixing structure with glass fiber sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220546876 CN202840742U (en) | 2012-10-24 | 2012-10-24 | Pole glue-injected hermetic fixing structure with glass fiber sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202840742U true CN202840742U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220546876 Expired - Fee Related CN202840742U (en) | 2012-10-24 | 2012-10-24 | Pole glue-injected hermetic fixing structure with glass fiber sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202840742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576012A (en) * | 2014-12-19 | 2015-04-29 | 海鸿电气有限公司 | Assembly method and structure for transformer body |
-
2012
- 2012-10-24 CN CN 201220546876 patent/CN202840742U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576012A (en) * | 2014-12-19 | 2015-04-29 | 海鸿电气有限公司 | Assembly method and structure for transformer body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HARBIN ELECTRIC COMPANY LIMITED Assignor: Harbin Electric Machine Co., Ltd. Contract record no.: 2014230000103 Denomination of utility model: Pole glue-injected hermetic fixing structure with glass fiber sleeve Granted publication date: 20130327 License type: Exclusive License Record date: 20140404 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20171024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |