CN100386380C - Insulating structure and production for vacuum-pressure immersing process of high-voltage motor - Google Patents
Insulating structure and production for vacuum-pressure immersing process of high-voltage motor Download PDFInfo
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- CN100386380C CN100386380C CNB200610031167XA CN200610031167A CN100386380C CN 100386380 C CN100386380 C CN 100386380C CN B200610031167X A CNB200610031167X A CN B200610031167XA CN 200610031167 A CN200610031167 A CN 200610031167A CN 100386380 C CN100386380 C CN 100386380C
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 77
- 229920005989 resin Polymers 0.000 claims abstract description 76
- 239000010445 mica Substances 0.000 claims abstract description 74
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 74
- 238000009413 insulation Methods 0.000 claims abstract description 73
- 239000004593 Epoxy Substances 0.000 claims abstract description 48
- 239000000843 powder Substances 0.000 claims abstract description 40
- 239000011521 glass Substances 0.000 claims abstract description 35
- 238000005470 impregnation Methods 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 150000002148 esters Chemical class 0.000 claims abstract description 8
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 41
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- 238000002791 soaking Methods 0.000 claims description 35
- 238000005516 engineering process Methods 0.000 claims description 34
- 239000011152 fibreglass Substances 0.000 claims description 31
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 15
- 239000003999 initiator Substances 0.000 claims description 15
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 15
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 10
- 229920000728 polyester Polymers 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000002390 adhesive tape Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- MNAHQWDCXOHBHK-UHFFFAOYSA-N 1-phenylpropane-1,1-diol Chemical group CCC(O)(O)C1=CC=CC=C1 MNAHQWDCXOHBHK-UHFFFAOYSA-N 0.000 claims description 5
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical group [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 5
- 229920003986 novolac Polymers 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 4
- 238000010790 dilution Methods 0.000 abstract description 5
- 239000012895 dilution Substances 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 2
- 239000001828 Gelatine Substances 0.000 abstract 4
- 229920000159 gelatin Polymers 0.000 abstract 4
- 230000006978 adaptation Effects 0.000 abstract 1
- 239000003085 diluting agent Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 206010020852 Hypertonia Diseases 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000010068 moulding (rubber) Methods 0.000 description 2
- 229920003055 poly(ester-imide) Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention relates to an insulating structure and a manufacture method thereof for the vacuum-pressure immersing process of a high voltage motor. The method of the insulation of vacuum pressure impregnation of an insulating stator in a little-gelatine full-impregnation type is used, and a little-gelatine-powder mica belt is used for enswathement. After a white blank is dropped, the vacuum pressure impregnation of the insulating resin without solvent is provided for the entire stator to form a composite insulating structure of the process of the vacuum pressure impregnation. The present invention is characterized in that the epoxy resin of the insulating structure of the process of the entire impregnation of the vacuum pressure of the motor contains unsaturated bonds which are used for synthesizing unsaturated epoxy ester resin. After reactive diluent is filled for dilution, the entire impregnated insulating resin with low viscosity, high permeability and wide adaptation range is obtained. The entire impregnation insulating resin containing the unsaturated bonds has excellent compatibility with a mica little-gelatine belt of epoxy glass powder. The entire impregnation insulating resin containing the unsaturated bonds and the mica little-gelatine belt of epoxy glass powder can be reasonably matched to form the insulating structure of the process of the entire impregnation of little-gelatine vacuum pressure, which can be suitable for the requirements of the insulating structures of high-voltage motors of different levels of 3KV, 6KV and 10KV.
Description
Technical field
The present invention relates to insulation system of a kind of vacuum-pressure immersing process of high-voltage motor and preparation method thereof, this insulation system comprises high pressure solvent-free impregnating resin and few glue glass powder mica tape.Be mainly used in the major insulation of the stator coil of F level vacuum-pressure immersing process of high-voltage motor, also can be applied to the insulation of the whole soaking technology of other rank stator coils.
Background technology
High-voltage motor stator coil (major insulation) is divided into from technology that few glue is whole to soak the type insulation and many rubber mouldings die mould insulate.Few glue is whole, and to soak the type insulation be with the dry mica paper tape wrapping, the openpore solvent-free insulated resin of the whole stator vacuum pressure impregnation in back that rolls off the production line; Many rubber mouldings die mould insulation is with the wrapping of many glue glass powder mica tape or with the baking of micafolium volume, and mold pressing or hydraulically-setting, the whole stator in back that rolls off the production line flood under normal conditions or water solventfree resin.The whole soaking technology of few glue is owing to reduced coil vacuum-drying and mold pressing procedure, simplify coil manufacturing process and made things convenient for rule, not only shortened motor and made time-histories, reduced manufacturing cost, and help improving the coil insulation workmanship, reduce the dispersiveness of mass of coil.Therefore, high-voltage motor is most of at present adopts few glue to put in order soaking technology.
Few glue is whole, and to soak type insulating main body insulating material be few glue glass powder mica tape and high pressure solvent-free impregnating resin.At present, the whole big-and-middle-sized high-voltage motor stator insulation of type F level that soaks of few glue mainly adopts unsaturated polyester-imide solvent-free impregnating resin and the few glue glass powder cloud bar insulation system of polyester-imide and Resins, epoxy and epoxy little-glue glass powder mica tape insulation system.The former is owing to the defective of material, and instantaneous power frequency breaking down field strength generally can only reach about 25KV/mm, is difficult to reach the technical requirement of 30KV/mm, so, being mainly used in 3KV, 6KV level medium-sized high-pressure electrical machinery, 10KV level and above model are seldom used.Though and the instantaneous power frequency breaking down field strength of the latter can reach the technical requirements of 30KV/mm, because the use viscosity of Resins, epoxy is bigger, poor permeability need be heated to resin 40～50 ℃ to reduce the use viscosity of resin during use, improve penetrating quality.After dipping lacquer was finished, resin was cooled to the preceding temperature of dipping by refrigeration system, guarantees the package stability of resin.Like this, require the vacuum pressure impregnation equipment claimed that heating and refrigeration system are arranged, increased investment cost of equipment greatly, increased the complicacy of using technology.Add the latent curing agent that adds in the Resins, epoxy, require use and storage temperature low.Therefore, poor for applicability, generally promote the bigger defective of existence.
Summary of the invention
The objective of the invention is to exist not enough and a kind of novel insulation system development, with the requirement of the various different voltage level insulation systems of the big-and-middle-sized high-voltage motor of F level that satisfy the whole soaking technology of vacuum pressure at the insulation system of existing big-and-middle-sized vacuum-pressure immersing process of high-voltage motor.
Another object of the present invention provides the making method of above-mentioned insulation system.
The objective of the invention is to be achieved through the following technical solutions: adopt the whole type insulation stator vacuum pressure varnished insulation method of soaking of few glue, wrap up with dry mica paper tape, the solvent-free insulated resin of whole stator vacuum pressure impregnation after openpore rolls off the production line forms the composite insulation structure that vacuum pressure is put in order soaking technology; Its characteristics are to contain unsaturated link(age) in the Resins, epoxy of insulation system of the whole soaking technology of motor vacuum pressure, are synthetic unsaturated epoxy ester resin, after adding the reactive thinner dilution, obtain the whole insulating resin that soaks of low viscosity, hypertonicity, wide accommodation.This contain unsaturated link(age) the whole few adhesive tape of insulating resin and epoxy glass mica powder that soaks have good consistency, by the whole reasonable apolegamy of soaking insulating resin and the few adhesive tape of epoxy glass mica powder that will contain unsaturated link(age), the insulation system of the whole soaking technology of few glue vacuum pressure that both form can be adapted to the requirement of insulation system of the high-voltage motor of 3KV, 6KV and 10KV level different stage.
High pressure solvent-free impregnating resin of the present invention is formed and proportioning following (deal proportioning by weight):
35～45 parts of Resins, epoxy; 1.5～11.5 parts of MALEIC ANHYDRIDE;
1.5～4.5 parts in vinylformic acid; 3.0～15.0 parts in solidifying agent;
0.3～2.0 part of initiator; 22～59 parts of thinners;
The said Resins, epoxy of the present invention is dihydroxyphenyl propane series of loops epoxy resins, and oxirane value is 0.10～0.55, technical grade.
The said MALEIC ANHYDRIDE of the present invention, purity be greater than 98.5%, technical grade.
The said vinylformic acid of the present invention, purity is greater than 97.0%, technical grade.
The said solidifying agent of the present invention is a novolac resin, 65～115 ℃ of softening temperatures, and purity is greater than 95%, technical grade.
The said initiator of the present invention is a superoxide, and purity is greater than 99.0%.
The said thinner of the present invention is a vinylbenzene, technical grade, and purity is greater than 99.0%.
Preparation technology's flow process of F level high pressure solvent-free impregnating resin of the present invention is: Resins, epoxy is added in the reactor, start stirring, heat to 90～150 ℃, add MALEIC ANHYDRIDE and vinylformic acid then, in 110～140 ℃ of insulation reaction 2～4 hours, measure acid number, when acid number reaches 10～20mgKOH/g, vacuumize, vacuum degree control-0.085～-0.095MPa between, 20～60 minutes pumpdown times cooled to 70～130 ℃ then, added solidifying agent, stirred 30～40 minutes, treat after solidifying agent dissolves fully thinner to be mixed in the reactor, continue to stir, open water coolant, be cooled to 50～70 ℃, add initiator, stirred 10～30 minutes, filter with the stainless steel filtering net, packing.
High pressure solvent-free impregnating resin performance index such as the table 1 made according to the method described above
Table 1
Few glue glass powder mica tape prescription of indication of the present invention and weight component proportioning are:
2.0～5.0 parts of tackiness agent; 70.0～90.0 parts on mica;
Woven fiber glass 5.0.0～28.0 part;
Wherein said tackiness agent is the epoxy polyester tackiness agent, and oxirane value is between 20～90, and the molecular weight of polyester is between 5000～20000;
Said mica is a raw powder mica paper, and indicated weight is 100～220g/m
2
Said woven fiber glass is that alkali-free is decided the line woven fiber glass, and indicated weight is 12～25g/m
2
Preparation technology's flow process of few glue glass powder mica tape is: after mica paper and woven fiber glass are installed, adjust the speed of a motor vehicle to 0.5～1.5m/s, oven temperature is controlled at respectively: a district, 50～70 ℃; Two districts, 80～100 ℃; Three districts, 110～130 ℃.Woven fiber glass is by behind the steeping vat impregnation, and mica paper and woven fiber glass are compound, cure by permeating to enter in the baking oven behind the roller, then by rolling, be squeezed into work in-process, work in-process are by cutting, being finished product after the rewinding.Few glue glass powder mica tape performance index such as the table 2 made according to the method described above.
Table 2
| Sequence number | Project | Unit | Index |
| 1 | Outward appearance | / | Tackiness agent is evenly distributed, and inclusion-free, no adhesion, does not have disconnected paper, does not have and reel off raw silk from cocoons and manage looseningly, and normality is soft and not stratified |
| 2 | Nominal thickness | mm | 0.14±0.02 |
| 3 | Woven fiber glass | g/m 2 | 18～22 |
| 4 | Mica paper | g/m 2 | 180±14 |
| 5 | Glue content | ％ | 3～10 |
| 6 | Volatile content | ％ | ≤1.0 |
| 7 | Tensile strength | N/10cm | ≥60 |
| 8 | Electrical strength | MV/m | ≥12 |
When making the composite insulation structure of the whole soaking technology of vacuum pressure, be that the few glue glass powder mica tape that will make is as stated above earlier wrapped up whole stator coil, the coil that will be surrounded by few glue glass powder mica tape then embeds in the stator, after the stator drying is removed tide, put into the whole resin pickup of F level vacuum pressure by the whole soaking technology of vacuum pressure, baked and cured at a certain temperature then just can obtain to be adapted to the high-voltage motor stator coil that the insulation system of the high-voltage motor of 3KV, 6KV and 10KV level different stage requires.
Accompanying drawing and explanation
Fig. 1 F level high pressure solvent-free impregnating resin manufacturing process flow diagram.
Preparation technology's schema of the few glue glass powder mica tape of Fig. 2.
Embodiment
Embodiment one
A kind of F level high-voltage motor stator coil Main Insulation Structure of Electric, adopt the whole type insulation stator vacuum pressure varnished insulation method of soaking of few glue, with the dry mica paper tape wrapping, the solvent-free insulated resin of whole stator vacuum pressure impregnation after openpore rolls off the production line forms the composite insulation structure that vacuum pressure is put in order soaking technology; Its characteristics are to contain unsaturated link(age) in the Resins, epoxy of insulation system of the whole soaking technology of motor vacuum pressure, are synthetic unsaturated epoxy ester resin, after adding the reactive thinner dilution, obtain the whole insulating resin that soaks of low viscosity, hypertonicity, wide accommodation.This contain unsaturated link(age) the whole few adhesive tape of insulating resin and epoxy glass mica powder that soaks have good consistency, by will contain unsaturated link(age) whole reasonable apolegamy of soaking the few adhesive tape of insulating resin and epoxy glass mica powder, the insulation system of the whole soaking technology of few glue vacuum pressure that both form can be adapted to the requirement of insulation system of the high-voltage motor of 3KV, 6KV and 10KV level different stage.Wherein the prescription of F level high pressure solvent-free impregnating resin is as follows:
35 parts of Resins, epoxy; 1.5 parts of MALEIC ANHYDRIDE;
1.5 parts in vinylformic acid; 3.0 parts in solidifying agent;
1.0 parts of initiators; 58.7 parts of thinners;
Resins, epoxy is dihydroxyphenyl propane series of loops epoxy resins, and oxirane value is 0.10, technical grade.
MALEIC ANHYDRIDE, purity be greater than 98.5%, technical grade.
Vinylformic acid, purity is greater than 97.0%, technical grade.
Solidifying agent is a novolac resin, 65 ℃ of softening temperatures, and purity is greater than 95%, technical grade.
Initiator is a superoxide, and purity is greater than 99.0%.
Thinner is a vinylbenzene, technical grade, and purity is greater than 99.0%.
The manufacturing process of F level high pressure solvent-free impregnating resin as shown in Figure 1, concrete steps are as follows:
1, Resins, epoxy is added in the reactor, start stirring, heat to 90 ℃.
2, add MALEIC ANHYDRIDE and vinylformic acid, in 110 ℃ of insulation reaction 2 hours.
3, measure acid number, when acid number reaches 10mgKOH/g, vacuumize, vacuum degree control between-0.085MPa, 20 minutes pumpdown times.
4, cool to 70 ℃, add solidifying agent, stirred 30 minutes, treat after solidifying agent dissolves fully thinner to be mixed in the reactor, continue to stir, open water coolant, be cooled to 50 ℃, add initiator, stirred 10 minutes, filter, pack with the stainless steel filtering net.
Few glue glass powder mica tape prescription is as follows:
2.0 parts of tackiness agent; 70.0 parts on mica;
28.0 parts of woven fiber glass;
Tackiness agent is the epoxy polyester tackiness agent, and oxirane value is between 20, and the molecular weight of polyester is 5000;
Mica paper, indicated weight are 100g/m
2
Woven fiber glass is that alkali-free is decided the line woven fiber glass, and indicated weight is 25g/m
2
Preparation technology's flow process of few glue glass powder mica tape as shown in Figure 2, concrete steps are as follows:
1, mica paper and woven fiber glass are installed after, adjust the speed of a motor vehicle to 0.5m/s.
2, the control oven temperature exists respectively: a district, 50 ℃; Two districts, 80 ℃; Three districts, 110 ℃.
3, woven fiber glass is by the steeping vat impregnation, after mica paper and woven fiber glass are compound, enter in the baking oven and cures by permeating roller.
4, the mica cloth that cures is made half cost after by rolling, extruding, half cost by cut, rewinding is finished product.
The high-voltage motor stator coil Main Insulation Structure of Electric is that few glue glass powder mica tape of making is as stated above directly wrapped up whole stator coil, the coil that will be surrounded by few glue glass powder mica tape then embeds in the stator, after the stator drying is removed tide, put into the whole resin pickup of F level vacuum pressure by the whole soaking technology of vacuum pressure, baked and cured under 130 ℃～170 ℃ temperature then just can obtain to be adapted to the high-voltage motor stator coil that the insulation system of the high-voltage motor of 3KV, 6KV and 10KV level different stage requires.
Embodiment two
A kind of F level high-voltage motor stator coil Main Insulation Structure of Electric, adopt the whole type insulation stator vacuum pressure varnished insulation method of soaking of few glue, with the dry mica paper tape wrapping, the solvent-free insulated resin of whole stator vacuum pressure impregnation after openpore rolls off the production line forms the composite insulation structure that vacuum pressure is put in order soaking technology; Its characteristics are to contain unsaturated link(age) in the Resins, epoxy of insulation system of the whole soaking technology of motor vacuum pressure, are synthetic unsaturated epoxy ester resin, after adding the reactive thinner dilution, obtain the whole insulating resin that soaks of low viscosity, hypertonicity, wide accommodation.This contain unsaturated link(age) the whole few adhesive tape of insulating resin and epoxy glass mica powder that soaks have good consistency, by will contain unsaturated link(age) whole reasonable apolegamy of soaking the few adhesive tape of insulating resin and epoxy glass mica powder, the insulation system of the whole soaking technology of few glue vacuum pressure that both form can be adapted to the requirement of insulation system of the high-voltage motor of 3KV, 6KV and 10KV level different stage.Wherein the prescription of F level high pressure solvent-free impregnating resin is as follows:
40 parts of Resins, epoxy; 6.5 parts of MALEIC ANHYDRIDE;
3.0 parts in vinylformic acid; 9.0 parts in solidifying agent;
0.3 part of initiator; 41.7 parts of thinners;
Resins, epoxy is dihydroxyphenyl propane series of loops epoxy resins, and oxirane value is 0.3, technical grade.
MALEIC ANHYDRIDE, purity be greater than 98.5%, technical grade.
Vinylformic acid, purity is greater than 97.0%, technical grade.
Solidifying agent is a novolac resin, 65 ℃ of softening temperatures, and purity is greater than 95%, technical grade.
Initiator is a superoxide, and purity is greater than 99.0%.
Thinner is a vinylbenzene, technical grade, and purity is greater than 99.0%.
The manufacturing process of F level high pressure solvent-free impregnating resin is as follows:
1, Resins, epoxy is added in the reactor, start stirring, heat to 120 ℃.
2, add MALEIC ANHYDRIDE and vinylformic acid, in 125 ℃ of insulation reaction 3 hours.
3, measure acid number, when acid number reaches 15mgKOH/g, vacuumize, vacuum degree control between-0.090MPa, 30 minutes pumpdown times.
4, cool to 100 ℃, add solidifying agent, stirred 40 minutes, treat after solidifying agent dissolves fully thinner to be mixed in the reactor, continue to stir, open water coolant, be cooled to 60 ℃, add initiator, stirred 10 minutes, filter, pack with the stainless steel filtering net.
Few glue glass powder mica tape prescription is as follows:
3.5 parts of tackiness agent; 75 parts on mica;
21.5 parts of woven fiber glass;
Tackiness agent is the epoxy polyester tackiness agent, and oxirane value is between 55, and the molecular weight of polyester is 12500;
Mica is a raw powder mica paper, and indicated weight is 160g/m
2
Woven fiber glass is that alkali-free is decided the line woven fiber glass, and indicated weight is 18g/m
2
Preparation technology's flow process of few glue glass powder mica tape is as follows:
1, mica paper and woven fiber glass are installed after, adjust the speed of a motor vehicle to 1.0m/s.
2, the control oven temperature exists respectively: a district, 120 ℃; Two districts, 90 ℃; Three districts, 120 ℃.
3, woven fiber glass is by the steeping vat impregnation, after mica paper and woven fiber glass are compound, enter in the baking oven and cures by permeating roller.
4, the mica cloth that cures is made half cost after by rolling, extruding, half cost by cut, rewinding is finished product.
The high-voltage motor stator coil Main Insulation Structure of Electric is that few glue glass powder mica tape of making is as stated above wrapped up whole stator coil, the coil that will be surrounded by few glue glass powder mica tape then embeds in the stator, after the stator drying is removed tide, put into the whole resin pickup of F level vacuum pressure by the whole soaking technology of vacuum pressure, baked and cured under 130 ℃～170 ℃ temperature then just can obtain to be adapted to the high-voltage motor stator coil that the insulation system of the high-voltage motor of 3KV, 6KV and 10KV level different stage requires.
Embodiment three
A kind of F level high-voltage motor stator coil Main Insulation Structure of Electric, adopt the whole type insulation stator vacuum pressure varnished insulation method of soaking of few glue, with the dry mica paper tape wrapping, the solvent-free insulated resin of whole stator vacuum pressure impregnation after openpore rolls off the production line forms the composite insulation structure that vacuum pressure is put in order soaking technology; Its characteristics are to contain unsaturated link(age) in the Resins, epoxy of insulation system of the whole soaking technology of motor vacuum pressure, are synthetic unsaturated epoxy ester resin, after adding the reactive thinner dilution, obtain the whole insulating resin that soaks of low viscosity, hypertonicity, wide accommodation.This contain unsaturated link(age) the whole few adhesive tape of insulating resin and epoxy glass mica powder that soaks have good consistency, by will contain unsaturated link(age) whole reasonable apolegamy of soaking the few adhesive tape of insulating resin and epoxy glass mica powder, the insulation system of the whole soaking technology of few glue vacuum pressure that both form can be adapted to the requirement of insulation system of the high-voltage motor of 3KV, 6KV and 10KV level different stage.Wherein the prescription of F level high pressure solvent-free impregnating resin is as follows:
45 parts of Resins, epoxy; 11.5 parts of MALEIC ANHYDRIDE;
4.5 parts in vinylformic acid; 15 parts in solidifying agent;
2.0 parts of initiators; 22 parts of thinners;
Resins, epoxy is dihydroxyphenyl propane series of loops epoxy resins, and oxirane value is 0.55, technical grade.
MALEIC ANHYDRIDE, purity be greater than 98.5%, technical grade.
Vinylformic acid, purity is greater than 97.0%, technical grade.
Solidifying agent is a novolac resin, 105 ℃ of softening temperatures, and purity is greater than 95%, technical grade.
Initiator is a superoxide, and purity is greater than 99.0%.
Thinner is a vinylbenzene, technical grade, and purity is greater than 99.0%.
The manufacturing process of F level high pressure solvent-free impregnating resin is as follows:
1, Resins, epoxy is added in the reactor, start stirring, heat to 150 ℃.
2, add MALEIC ANHYDRIDE and vinylformic acid, in 140 ℃ of insulation reaction 4 hours.
3, measure acid number, when acid number reaches 20mgKOH/g, vacuumize, vacuum degree control between-0.095MPa, 60 minutes pumpdown times.
4, cool to 130 ℃, add solidifying agent, stirred 60 minutes, treat that solidifying agent dissolves the back thinner fully and mixes in the reactor, continue to stir, open water coolant, be cooled to 70 ℃, add initiator, stirred 30 minutes, filter, pack with the stainless steel filtering net.
Few glue glass powder mica tape prescription is as follows:
5.0 parts of tackiness agent; 90.0 parts on mica;
5.0 parts of woven fiber glass;
Tackiness agent is the epoxy polyester tackiness agent, and oxirane value is between 90, and the molecular weight of polyester is between 20000;
Mica is a raw powder mica paper, and indicated weight is 100g/m
2
Woven fiber glass is that alkali-free is decided the line woven fiber glass, and indicated weight is 12g/m
2
Preparation technology's flow process of few glue glass powder mica tape is as follows:
1, mica paper and woven fiber glass are installed after, adjust the speed of a motor vehicle to 1.5m/s.
2, the control oven temperature exists respectively: a district, 70 ℃; Two districts, 100 ℃; Three districts, 130 ℃.
3, woven fiber glass is by the steeping vat impregnation, after mica paper and woven fiber glass are compound, enter in the baking oven and cures by permeating roller.
4, the mica cloth that cures is made half cost after by rolling, extruding, half cost by cut, rewinding is finished product.
The high-voltage motor stator coil Main Insulation Structure of Electric is that few glue glass powder mica tape of making is as stated above wrapped up whole stator coil, the coil that will be surrounded by few glue glass powder mica tape then embeds in the stator, after the stator drying is removed tide, put into the whole resin pickup of F level vacuum pressure by the whole soaking technology of vacuum pressure, baked and cured under 130 ℃～170 ℃ temperature then just can obtain to be adapted to the high-voltage motor stator coil that the insulation system of the high-voltage motor of 3KV, 6KV and 10KV level different stage requires.
Claims (5)
1. the insulation system of a vacuum-pressure immersing process of high-voltage motor, stator is a dry mica paper tape wrapping structure, the outer vacuum pressure impregnation of dry mica paper tape has solvent-free insulated resin, composite insulation structure for the whole soaking technology of vacuum pressure, and contain unsaturated link(age) in the Resins, epoxy of the composite insulation structure of the whole soaking technology of vacuum pressure, be synthetic unsaturated epoxy ester resin, it is characterized in that:
A, described dry mica paper tape are the few adhesive tape of epoxy glass mica powder, carry out proportioning by following mass parts prescription:
2.0～5.0 parts of tackiness agent;
70.0～90.0 parts on mica;
5.0～28.0 parts of woven fiber glass;
B, described synthetic unsaturated epoxy ester resin are to carry out proportioning by following mass parts prescription:
35～45 parts of Resins, epoxy;
1.5～11.5 parts of MALEIC ANHYDRIDE;
1.5～4.5 parts in vinylformic acid;
3.0～15.0 parts in solidifying agent;
0.3～2.0 part of initiator;
22～59 parts of thinners.
2. the insulation system of a kind of vacuum-pressure immersing process of high-voltage motor as claimed in claim 1, it is characterized in that: described Resins, epoxy is dihydroxyphenyl propane series of loops epoxy resins, and oxirane value is 0.10～0.55, technical grade; Described MALEIC ANHYDRIDE, purity be greater than 98.5%, technical grade; Described vinylformic acid, purity is greater than 97.0%, technical grade; Described solidifying agent is a novolac resin, 65～115 ℃ of softening temperatures, and purity is greater than 95%, technical grade; Described initiator is a superoxide, and purity is greater than 99.0%; Described thinner is a vinylbenzene, technical grade, and purity is greater than 99.0%.
3. the insulation system of a kind of vacuum-pressure immersing process of high-voltage motor as claimed in claim 1, it is characterized in that: described tackiness agent is the epoxy polyester tackiness agent, and oxirane value is between 20～90, and the molecular weight of polyester is between 5000～20000; Described mica is a raw powder mica paper, and indicated weight is 100～220g/m
2Described woven fiber glass is that alkali-free is decided the line woven fiber glass, and indicated weight is 12～25g/m
2
4. the making method of the insulation system of the vacuum-pressure immersing process of high-voltage motor of an insulation system of realizing the described vacuum-pressure immersing process of high-voltage motor of claim 1, adopt the whole type insulation stator vacuum pressure varnished insulation method of soaking of few glue, wrap up with dry mica paper tape, the solvent-free insulated resin of whole stator vacuum pressure impregnation after openpore rolls off the production line forms the composite insulation structure that vacuum pressure is put in order soaking technology; It is characterized in that: described synthetic unsaturated epoxy ester resin manufacturing process is as follows:
A, Resins, epoxy is added in the reactor, start stirring, heat to 90～150 ℃;
B, add MALEIC ANHYDRIDE and vinylformic acid, in 110～140 ℃ of insulation reaction 2～4 hours;
C, measure acid number, when acid number reaches 10～20mgKOH/g, vacuumize, vacuum degree control-0.085～-0.095MPa between, 20～60 minutes pumpdown times;
D, cool to 70～130 ℃, add solidifying agent, stirred 30～40 minutes, treat after solidifying agent dissolves fully thinner to be mixed in the reactor, continue to stir, open water coolant, be cooled to 50～70 ℃, add initiator, stirred 10～30 minutes, filter, pack with the stainless steel filtering net.
5. the making method of the insulation system of the vacuum-pressure immersing process of high-voltage motor of an insulation system of realizing the described vacuum-pressure immersing process of high-voltage motor of claim 1, adopt the whole type insulation stator vacuum pressure varnished insulation method of soaking of few glue, wrap up with dry mica paper tape, the solvent-free insulated resin of whole stator vacuum pressure impregnation after openpore rolls off the production line forms the composite insulation structure that vacuum pressure is put in order soaking technology; It is characterized in that: described few glue glass powder mica tape preparation method is:
A, mica paper and woven fiber glass installed after, adjust the speed of a motor vehicle to 0.5～1.5m/s;
B, control oven temperature exist respectively: a district, 50～70 ℃; Two districts, 80～100 ℃; Three districts, 110～130 ℃;
C, woven fiber glass be by the steeping vat impregnation, after mica paper and woven fiber glass are compound, enter in the baking oven and cure by permeating roller;
D, the mica cloth that cures are made half cost after by rolling, extruding, half cost by cut, rewinding is finished product.
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| CNB200610031167XA CN100386380C (en) | 2006-01-23 | 2006-01-23 | Insulating structure and production for vacuum-pressure immersing process of high-voltage motor |
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| CNB200610031167XA CN100386380C (en) | 2006-01-23 | 2006-01-23 | Insulating structure and production for vacuum-pressure immersing process of high-voltage motor |
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| CN100386380C true CN100386380C (en) | 2008-05-07 |
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Effective date of registration: 20180810 Address after: 412199 Industrial Park, Lukou Economic Development Zone, Zhuzhou County, Zhuzhou, Hunan Patentee after: ZHUZHOU TIMES ELECTRIC INSULATION Co.,Ltd. Address before: 412300 Hunan Zhuzhou Tianyuan District Mount Huangshan road Zhuzhou new material Polytron Technologies Inc Patentee before: ZHUZHOU TIMES NEW MATERIAL TECHNOLOGY Co.,Ltd. |
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