CN103280908A - Turn-to-turn insulation structure of ultra-thin 10kV high-voltage motor and manufacturing method thereof - Google Patents
Turn-to-turn insulation structure of ultra-thin 10kV high-voltage motor and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to a turn-to-turn insulation structure of an ultra-thin 10kV high-voltage motor and a manufacturing method thereof. The turn-to-turn insulation structure comprises a wire insulating layer. The wire insulating layer comprises three layers of polyester film dry mica tapes arranged in a lapped mode. All the three layers of polyester film dry mica tapes are lapped in a gap wrapped mode. The size of each gap of the first layer, the size of each gap of the second layer and the size of each gap of the third layer are X1, X2 and X3 respectively, the X1 is larger than 0 mm and smaller than or equal to 0.1mm, the X2 is larger than 0 mm and smaller than or equal to 0.2mm, and the X3 is larger than 0mm and smaller than or equal to 0.3mm. The gaps of every two adjacent layers are arranged in an evenly-staggered mode, the distance between the gaps of every two adjacent layers is 1/3 of the width of the polyester film dry mica tapes, and the insulation thickness of double edges of the turn-to-turn insulation structure is 0.40-0.46mm. According to the turn-to-turn insulation structure, under the premise that insulation performance is guaranteed, the insulation thickness of the double edges of the turn-to-turn insulation structure is reduced to a value below 0.46mm, and ultra thin of the turn-to-turn insulation structure is achieved.
Description
Technical field
The invention belongs to the electrical machine insulation technical field, be specifically related to a kind of turn-to-turn insulation structure and manufacture method thereof of 10kV level motor.
Background technology
High-power, small size is the developing direction in high-voltage motor field.Dwindling motor volume with under the power, not only can save manufacturing cost, improving the motor heat performance, reduce electric machine temperature rise; Also can reduce motor weight, be convenient to transportation, use and install.
Dwindling motor volume with under the power, it is crucial reducing insulation size (comprising turn-to-turn insulation and main insulation) raising copper factor.And the minimizing of insulation size and insulation quality and insulating reliability are a pair of contradiction.Have only scientific and reasonable insulation system just can make motor both have good performance, can satisfy more high-power again and needs smaller size smaller.The advance of electrical machine insulation structure and reliability also are the reliable assurances of motor product occupation rate of market.
High-voltage motor insulated structure mainly is made up of turn-to-turn insulation structure, Main Insulation Structure of Electric, anti dizzy structure and protection structure, obtains after handling, solidify finally by whole VPI.With regard to the turn-to-turn insulation structure, mainly be to be made by the wrapped copper strap wire of insulating material.Up to now, generally believe that in the industry the performance of turn-to-turn insulation depends primarily on the selection of its structure and insulating material, and can not be subjected to the considerable influence of the wrapped mode of insulating material.In two kinds of known wrapped modes: in the stacked package mode peace packet mode, the half-stack package mode is because of its technology comparative maturity, operate simpler, and generally adopted by institute of domestic manufacturer, and flat packet mode (two adjacent limits abut against together in the same lapping layer, neither overlappingly do not stagger yet) then because of be a kind of Utopian wrapped mode (in fact, because the edge of mica tape can not be Utopian straight line, but a kind of concavo-convex skewness is irregularly shaped, the actual flat result who holds bag still is small stacked package mode, this small overlapping thickness can not play insulating effect, but taken the flute profile size, the attenuate that is unfavorable for the turn-to-turn insulation size) and technology controlling and process complicated, and rarely have domestic manufacturer to adopt.Therefore, the overwhelming majority's 10kV level high-voltage motor employing at present all is stacked package mode (1/2 stacked package or 2/3 stacked package).A kind of turn-to-turn insulation structure that adopts flat packet mode is disclosed among the CN202798235U up to date, wherein point out to take the polyester film low resin mica tape of flat packet mode can reduce insulation harm, but, the specific implementation method and the key parameter that in this patent, do not have open flat bag, and the wire insulation of just simply having described the winding copper strap wire is to be the some layers of the flat bag of polyester film low resin mica tape of 0.070 ± 0.005mm by thickness, forms to have the insulating barrier that bilateral insulation thickness is 0.48-0.52mm.Then, though this patent disclosure the mode of the flat bag of polyester film low resin mica tape that adopts, those skilled in the art can not repeat to implement and reach its alleged effect at this point.And as previously mentioned, common flat packet mode because in the reality small overlapping be the attenuate that is unfavorable for the turn-to-turn insulation size, therefore, the structure of documents can't really realize the ultra-thin of turn-to-turn insulation.
In sum, the turn-to-turn insulation structure of existing 10kV level high-voltage motor can't really realize the attenuate of thickness under the prerequisite that guarantees insulation property.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of turn-to-turn insulation structure that can really realize the 10kV level high-voltage motor of reduced thickness under the prerequisite that guarantees insulation property is provided.
The present invention provides a kind of manufacture method of turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor simultaneously.
For solving above technical problem, a kind of technical scheme that the present invention takes is:
A kind of turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor, it comprises wire insulation, wire insulation comprises wrapped multi-layered polyester film low resin mica tape on the copper strap wire conductor, the polyester film low resin mica tape comprises laminated polyester film, the mica powder ply of paper, be formed on the adhesive layer between laminated polyester film and the mica powder ply of paper, particularly, described polyester film low resin mica tape also comprises the self-adhesive on the one side that deviates from adhesive layer that is formed on polyester film, described polyester film low resin mica tape has three layers, ground floor, the gap length of the second layer and the 3rd layer is made as X1 respectively, X2, X3,0＜X1≤0.1mm, 0＜X2≤0.2mm, 0＜X3≤0.3mm, evenly stagger in the gap of ground floor and the second layer, evenly stagger in the gap of the second layer and the 3rd layer, and the distance between the gap of the gap of ground floor and the adjacent second layer, distance between the gap of the second layer and adjacent the 3rd layer the gap be described polyester film low resin mica tape width 1/3, the bilateral thickness of described turn-to-turn insulation structure is 0.40～0.46mm.
According to the present invention, the thickness of described polyester film low resin mica tape can and be preferably 0.075～0.10mm.
Preferably, the curved edge degree of described polyester film low resin mica tape is not more than 0.06mm.Because existing polyester film low resin mica tape product has the part that some are similar to burr inevitably, the existence of this part makes that the ragged edge of the few glue mica of polyester film is not to be a straight straight line, but be the height shape that rises and falls, described " curved edge degree " namely refers to maximal margin sweep and the distance between the arc string width of the existing the wideest burr in the edge of the interior polyester film low resin mica tape of 300mm length in other words in the 300mm length.
Preferably, the curved edge degree＜X1≤0.1mm of polyester film low resin mica tape; Curved edge degree＜X2≤the 0.2mm of polyester film low resin mica tape; Curved edge degree＜X3≤the 0.3mm of polyester film low resin mica tape.
Preferably, described polyester film low resin mica tape is the polyester film low resin mica tape that contains zinc salt accelerator, and the content of zinc salt accelerator is 200～500Zn
2+Mg/m
2, its promoter of containing can be accelerated the curing rate of VPI resin, reduces the loss of VPI impregnating resin.
Preferably, described adhesive layer is made of epoxies adhesive or modified epoxy class adhesive, and the compatibility of this adhesive and VPI impregnating resin is better.
Preferably, the mica of described polyester film low resin mica tape is quantitatively for being not less than 80g/m
2, adhesive quantitative is 3～9g/m
2, self-adhesive content is 1.3wt%～2.3wt%.Mica quantitatively is preferably 80～85g/m
2, compared with prior art, the present invention improves mica content, so can reduce or eliminate better under the action of high voltage, and partial discharge odds in the turn-to-turn insulation prolongs the turn-to-turn insulation life-span.Compared with prior art, the present invention is reduced to a reasonable range with adhesive quantitative, the insulation quality of the minimizing of adhesive content after can the VPI insulation processing is more stable, the easier volatilization of air in the turn-to-turn insulation layer, and it is inner that the VPI impregnating varnish more can fully enter insulation.According to the present invention, the content of self-adhesive is controlled at 1.3wt%～2.3wt%, is preferably about 1.8%.The content of self-adhesive is difficult for too high, when avoiding it to influence the VPI insulation processing, and the entering of the discharge of turn-to-turn insulation clearance air and VPI resin; On the other hand, during the turn-to-turn gel, because too much self-adhesive enters in the boundary belt, can cause the injury to the turn-to-turn insulation layer when removing boundary belt; Content is crossed to hang down and can be caused the turn-to-turn insulation gel bad.
Preferably, the bilateral insulation thickness of described turn-to-turn insulation structure is 0.42～0.45mm, and the minimizing of insulation size has improved the copper factor of electrode stator core, under the prerequisite that guarantees insulation property, and the size of dwindling motor.
The another technical scheme that the present invention takes is:
A kind of manufacture method of turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor, it comprises that the wrapped equipment of (1) employing wrapped polyester film low resin mica tape on the copper strap wire conductor forms wire insulation, obtain the step of magnet strip, wrapped equipment comprises actinobacillus device, wrapped head and take-up; (2) with magnet strip coiling solenoid, the bag boundary belt, moulding obtains stator coil, tears boundary belt open; (3), rule wrapped in main insulation, colligation fixing after, carry out the step that vacuum pressure impregnation is handled with main insulation, stator core integral body, particularly:
In the step (1): the wrapped equipment that adopts has the straight line traction function, and its actinobacillus device has permanent tension stringing function, take-up has permanent tension force function of receiving line, carrying out when wrapped, traction, take-up, unwrapping wire, carry out synchronously with wrapped head, describedly wrappedly require to carry out according to described gap;
Described manufacture method also comprises also in step (2), after the moulding, solenoid is carried out hot pressing successively and colds pressing, wherein the temperature of hot pressing is 155～165 ℃, pressure is 2.0～2.5MPa, and the self-adhesive of hot pressing to the wire insulation solidifies and each wire turn is solidified into one and finish when whole; After hot pressing finished, it was constant to keep-up pressure, and temperature is reduced to below 80 ℃, colds pressing.The time of hot pressing is generally 3～8min, and the time of colding pressing is generally 5～10min.
Preferably, in the step (3), it is zero volatilization or nearly zero volatilization epoxy anhydride vacuum pressure impregnation resin that the impregnating resin that adopts is handled in vacuum pressure impregnation.
Because adopt technique scheme, the present invention compared with prior art has the following advantages:
The insulating layer of conductor of turn-to-turn insulation structure of the present invention is that three strata ester film low resin mica tapes require the gap to hold according to certain interval to form, on the one hand, take the gap to hold mode, compare with traditional stacked package mode or flat packet mode, damage ratio obviously reduces, and reason is, no matter is stacked package or flat bag, between each wrapped week with the mica tape in one deck, the layer of different lapping layers with layer between mutual restriction, when bending, can not freely extend and increase the degree of injury of mica; And gap Bao Ze is just in time opposite, during the bag of gap, with gapped between each wrapped week in the layer, can move freely, and slippage mutually between the different layers reduces insulation harm.On the other hand, the gap is held each lamellar spacing of mode and the distance between the gap is carried out comprehensive Design, the Inter-turn Short Circuit Phenomenon of having avoided the gap bag to cause.Because the design of said structure, making can be under the prerequisite that guarantees insulation property, and the bilateral insulation thickness of turn-to-turn insulation is thinned to below the 0.46mm, and the minimum 0.40mm that is reduced to realizes ultra-thinization of turn-to-turn insulation structure.
The manufacture method of turn-to-turn insulation structure provided by the invention in step (1), has reduced insulation harm by permanent tension force control, has guaranteed insulation size and insulation quality; Make traction, take-up, unwrapping wire, synchronous with wrapped head, seamless in the time of can guaranteeing starting and stopping, guaranteed that further the insulation size is even; By the straight line traction, can avoid further having reduced insulation harm because number of bends too much makes the copper cash hardening.Above-mentioned various aspects organically combine, obtain successfully that thickness is even, the gap evenly and damage minimized insulating barrier; In addition, in step (2), after the moulding, also solenoid is carried out hot pressing successively and cold pressing, wherein thereby hot pressing is the contained self-adhesive of polyester film low resin mica tape to be heating and curing constitute each wire turn and be solidified into an integral body, take this mode to carry out the turn-to-turn gel, the discharge of gas and the infiltration of insulating resin when not only helping motor winding VPI insulation processing, and can guarantee the globality of whole insulation system behind the VPI well; In addition, described colding pressing can effectively prevent in the cooling procedure of insulated conductor wire turn after hot pressing after the hot pressing, the wire turn distortion that occurs and after pressure is removed phenomenon such as tears because the difference of the thermal coefficient of expansion of copper conductor, insulating barrier produces bigger internal stress with the turn-to-turn insulation damage or with the self-adhesion glue-line.The inventive method can successfully obtain the turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor.
Description of drawings
Below in conjunction with drawings and Examples invention is described further:
Fig. 1 is the structural representation of wire insulation of the turn-to-turn insulation structure of 10kV level high-voltage motor of the present invention;
Fig. 2 is the structural representation that constitutes the polyester film low resin mica tape of wire insulation among Fig. 1;
Wherein: 1, copper strap wire conductor; 2, ground floor polyester film low resin mica tape; 3, second layer polyester film low resin mica tape; 4, the 3rd strata ester film low resin mica tape; 5, polyester rete; 6, mica powder ply of paper; 7, adhesive layer; 8, self-adhesive.
Embodiment
The present invention will be described in detail below in conjunction with specific embodiment.Should be understood that these embodiment are for explanation the present invention rather than limit the scope of the invention.The implementation condition that adopts among the embodiment can require according to the difference of concrete use to do further adjustment, and not marked implementation condition is the condition in the normal experiment.
As shown in Figure 1, present embodiment provides a kind of turn-to-turn insulation structure of 10kV level high-voltage motor, and it comprises wire insulation, and wire insulation is made of wrapped three strata ester film low resin mica tapes 2,3,4 on copper strap wire conductor 1.
As shown in Figure 2, different with the polyester film low resin mica tape that traditional turn-to-turn insulation structure adopts, the polyester film low resin mica tape 2 that present embodiment adopts, 3,4 except comprising polyester rete 5, mica powder ply of paper 6, being formed on the adhesive layer 7 between laminated polyester film 5 and the mica powder ply of paper 6, also comprises the self-adhesive 8 on the reverse side that is coated in polyester rete 5.Control the content of self-adhesive 8 well, the infiltration of the discharge of gas and insulating resin when then not only helping motor VPI, and can guarantee the globality of whole insulation system behind the VPI well.The performance index of the polyester film low resin mica tape that adopts are as shown in table 1.
Table 1
Also different with traditional turn-to-turn insulation structure is that in the present embodiment, three strata ester film low resin mica tapes are according to specifically requiring the gap to be paperwrapped on the copper strap wire conductor 1.As shown in Figure 1, ground floor polyester film low resin mica tape 2 gaps surround on the copper strap wire conductor 1, and at this layer, the gap length X1 between two polyester film low resin mica tapes is 0.1mm; Second layer polyester film low resin mica tape 3 gaps surround on the ground floor polyester film low resin mica tape 2, at this layer, evenly stagger between the gap between two polyester film low resin mica tapes and the gap of ground floor, and gap length X2 are 0.2mm; Distance between the gap of the gap of ground floor and the adjacent second layer is 1/3 of mica tape width; The 3rd strata ester film low resin mica tape 4 gaps surround on the second layer polyester film low resin mica tape 3, and evenly stagger between the gap of its gap and the second layer, and gap length X3 is 0.3mm; Distance between the gap of the second layer and adjacent the 3rd layer the gap is 1/3 of mica tape width b; Take this structure, produce gap drift phenomenon and the turn-to-turn insulation short circuit phenomenon of coil after moulding in the time of can avoiding wrapped mica tape, when guaranteeing the performance of insulation system, realize the attenuate of thickness.
The manufacture method of the turn-to-turn insulation structure of 10kV level high-voltage motor is taked following technological process: on bare copper flat wire; adopt wrapped equipment; the wrapped polyester film low resin mica tape in gap is after the magnet strip → coiling that obtains having wire insulation on the copper strap wire → bag boundary belt → moulding → hot pressing → boundary belt of colding pressing → remove → wrapped in main insulation, rule, colligation are fixing, with main insulation, the whole VPI of stator core slot → be solidified into motor winding.In the above-mentioned operation, coiling, bag boundary belt, moulding and whole VPI all can adopt the method for the routine of knowing in the industry to implement, and do not describe in detail at this.Below describe for the making of magnet strip and the hot pressing after the moulding and cold pressing process.
(1) in the manufacturing process of first step magnet strip, following controlling element is arranged:
At first be: the mode of holding of employing is gap bag, and ground floor polyester film low resin mica tape gap surrounds on the copper strap wire conductor, and at this layer, the gap length X1 between two polyester film low resin mica tapes is 0.1mm; Second layer polyester film low resin mica tape gap surrounds on the ground floor polyester film low resin mica tape, at this layer, evenly stagger between the gap between two polyester film low resin mica tapes and the gap of ground floor, and gap length X2 is 0.2mm; Distance between the gap of the gap of ground floor and the adjacent second layer is 1/2 of mica tape width; The 3rd strata ester film low resin mica tape gap surrounds on the second layer polyester film low resin mica tape, at this layer, evenly stagger between the gap between two polyester film low resin mica tapes and the gap of the second layer, and gap length X3 is 0.3mm.The gap of this structure holds mode and half-stack package or flat bag is compared, and damage ratio obviously descends, and insulation property promote, nor bad phenomenon such as turn-to-turn short circuit can occur.
Next is: the enclosing apparatus of employing requires also should possess except having functions such as common alignment, polishing, cleaning, drying:
1. wrapped permanent tension force is controlled function (reduce insulation harm, guarantee the insulation size);
2. the permanent tension force of retractable drum is controlled function;
3. traction, take-up, unwrapping wire, with wrapped synchronizing function (seamless when guaranteeing starting and stopping);
4. straight line traction function (can avoid too much making the copper cash hardening because of number of bends).
By the use of the said equipment, can maximize and reduce in the manufacture process the infringement of insulating barrier and guarantee to obtain even, the uniform insulating barrier in gap of thickness.
(2) the gel operation of colding pressing after the first hot pressing
Among the present invention, after moulding, need carry out hot pressing, self-adhesive is kept a time period under the temperature that applies, in compacting tool set, self-adhesive is solidified into an integral body with each wire turn after solidifying.The temperature that applies is generally 160 ± 2 ℃.
In the cooling procedure of wire turn after hot pressing for lead, the wire turn distortion that may occur, and after pressure is removed, because the difference of the thermal coefficient of expansion of copper conductor, insulating barrier produces bigger internal stress the turn-to-turn insulation layer is damaged, or the self-adhesion glue-line phenomenon such as torn, the present invention takes to cold pressing after hot pressing.The same hot pressing of the pressure of colding pressing, the temperature of colding pressing are below 80 ℃, and the time of colding pressing is about 5min.
Comparative Examples 1
This Comparative Examples provides a kind of turn-to-turn insulation structure of 10kV level high-voltage motor, and it takes structure substantially the same manner as Example 1, and according to method manufacturing substantially the same manner as Example 1.Different is that in this example, the polyester film low resin mica tape that holds the material employing does not contain self-adhesive, in the hot pressing process of making (gel operation), puts the hot melt adhesive bar in advance between row.
Comparative Examples 2
This Comparative Examples provides a kind of turn-to-turn insulation structure of 10kV level high-voltage motor, it takes structure substantially the same manner as Example 1, different is, what the mode of holding of three strata ester film low resin mica tapes adopted is common flat packet mode, and this turn-to-turn insulation structure adopts common enclosing apparatus and traditional manufacture method manufacturing.
Contrast test
(1), the contrast test of the electric property of the turn-to-turn insulation structure of embodiment 1 and Comparative Examples 1
The electric performance test result is referring to table 2, wherein: project 1,2,3 is for having the line rod sample of embodiment 1 described turn-to-turn insulation structure; 4,5, No. 6 excellent samples of line for having Comparative Examples 1 described turn-to-turn insulation structure.
Electric property * 10 of the turn-to-turn insulation structure of table 2 embodiment 1 and Comparative Examples 1
-2
By table 2 as seen, the dielectric loss starting point of the turn-to-turn insulation structure of Comparative Examples 1 increases, and increment increases, and performance descends.Show the turn-to-turn gluing technique of self-adhesive more preferably.
(2) assessment of performance of the turn-to-turn insulation structure of embodiment 1 and Comparative Examples 2
1. traditional performance
1. sample situation
Lapped wire specification: 2.5 * 6.3;
2. the electric puncture voltage before the dipping lacquer contrasts situation
Electric puncture voltage reduced value is as shown in table 3 below behind 10 times of a spring songs.
The puncture voltage correction data of table 3 embodiment 1 and Comparative Examples 2
3. the electric property behind the dipping lacquer contrasts situation
A, the normal goat's horn type pattern that adopts of making are made sample by following flow process: blanking 600 length-straight-curved arcs-divest lead wire insulation-combination-circular arc place pad to fill mud-line part subpackage alkali-free band (effective length is 300)-pressure turn-to-turn-VPI processing-sample finished product.
The result is as shown in table 4 for b, conventional electrical property (the conventional electrical property level of turn-to-turn that in fact, is equivalent to winding).
Turn-to-turn insulation puncture voltage behind table 4 dipping lacquer
4. conclusion analysis: can find out that from table 3, table 4 test data of Comparative Examples 2 is dispersed big, average field-strength is starkly lower than embodiment 1, illustrate that its electric property is relatively poor relatively, and thickness increases to some extent than embodiment 1;
The turn-to-turn insulation of embodiment 1, the test data dispersiveness is very little, the stable performance of insulation system and reliable is described, and average breakdown strength improves a lot.
2. ageing properties
Experimental condition: 120 ℃, 50HZ, 4.5kV, 500h
Test situation: the sample production of performance test routinely
1. result of the test:
Under experimental condition behind the aging 500h, result of the test such as the table 5 of the surplus puncture voltage of its Retained.
The surplus puncture voltage of table 5 aging back turn-to-turn insulation Retained
2. conclusion analysis: can find out that from table 5 data the ageing properties of embodiment 1 is better than Comparative Examples 2, the motor turn-to-turn insulation life-span is longer.
(3) shock test of the turn-to-turn insulation structure of embodiment 1
Wind the line-just wrap-rise type-turn-to-turn gel-dismounting boundary belt-repair bag lead-in wire-bag insulation against ground-coil openpore.
Experimental condition: 29kV impacts 5 times, by.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this; can not limit protection scope of the present invention with this; all equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (10)
1. the turn-to-turn insulation structure of a ultrathin 10kV level high-voltage motor, it comprises wire insulation, described wire insulation comprises wrapped multi-layered polyester film low resin mica tape on the copper strap wire conductor, described polyester film low resin mica tape comprises laminated polyester film, mica powder ply of paper, is formed on the adhesive layer between laminated polyester film and the mica powder ply of paper
It is characterized in that: described polyester film low resin mica tape also comprises the self-adhesive on the one side that deviates from described adhesive layer that is formed on described polyester film, described polyester film low resin mica tape has three layers, ground floor, the gap length of the second layer and the 3rd layer is made as X1 respectively, X2, X3,0＜X1≤0.1mm, 0＜X2≤0.2mm, 0＜X3≤0.3mm, evenly stagger in the gap of ground floor and the second layer, evenly stagger in the gap of the second layer and the 3rd layer, and the distance between the gap of the gap of ground floor and the adjacent second layer, distance between the gap of the second layer and adjacent the 3rd layer the gap be described polyester film low resin mica tape width 1/3, the bilateral thickness of described turn-to-turn insulation structure is 0.40 ~ 0.46mm.
2. the turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor according to claim 1, it is characterized in that: the thickness of described polyester film low resin mica tape is 0.075 ~ 0.10mm.
3. the turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor according to claim 1, it is characterized in that: the curved edge degree of described polyester film low resin mica tape is not more than 0.06mm.
4. the turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor according to claim 3 is characterized in that: the curved edge degree＜X1≤0.1mm of polyester film low resin mica tape; Curved edge degree＜X2≤the 0.2mm of polyester film low resin mica tape; Curved edge degree＜X3≤the 0.3mm of polyester film low resin mica tape.
5. the turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor according to claim 1, it is characterized in that: described polyester film low resin mica tape is the polyester film low resin mica tape that contains zinc salt accelerator, and the content of zinc salt accelerator is 200 ~ 500 Zn
2+Mg/m
2
6. the turn-to-turn insulation structure of ultrathin 10kV level high-voltage motor according to claim 1, it is characterized in that: described adhesive layer is made of epoxies adhesive or modified epoxy class adhesive.
7. according to the turn-to-turn insulation structure of the described ultrathin 10kV level high-voltage motor of each claim in the claim 1 to 6, it is characterized in that: the mica of described polyester film low resin mica tape is quantitatively for being not less than 80 g/m
2, adhesive quantitative is 3 ~ 9g/m
2, self-adhesive content is 1.3wt% ~ 2.3wt%.
8. according to the turn-to-turn insulation structure of the described ultrathin 10kV level high-voltage motor of each claim in the claim 1 to 6, it is characterized in that: the bilateral insulation thickness of described turn-to-turn insulation structure is 0.42 ~ 0.45mm.
9. according to the manufacture method of the turn-to-turn insulation structure of the described ultrathin 10kV level high-voltage motor of each claim in the claim 1 to 8, it comprises that the wrapped equipment of (1) employing wrapped described polyester film low resin mica tape on the copper strap wire conductor forms wire insulation, obtain the step of magnet strip, described wrapped equipment comprises actinobacillus device, wrapped head and take-up; (2) with magnet strip coiling solenoid, the bag boundary belt, moulding obtains stator coil, tears boundary belt open; (3), rule wrapped in main insulation, colligation fixing after, carry out the step that vacuum pressure impregnation is handled with main insulation, stator core integral body, it is characterized in that:
In the step (1): the wrapped equipment that adopts has the straight line traction function, and its actinobacillus device has permanent tension stringing function, take-up has permanent tension force function of receiving line, carrying out when wrapped, traction, take-up, unwrapping wire, carry out synchronously with wrapped head, describedly wrappedly require to carry out according to described gap;
Described manufacture method also is included in the step (2), after the moulding, solenoid is carried out hot pressing successively and colds pressing, wherein the temperature of hot pressing is 155 ~ 165 ℃, pressure is 2.0 ~ 2.5MPa, and the self-adhesive of hot pressing to the wire insulation solidifies and each wire turn is solidified into one and finish when whole; After hot pressing finished, it was constant to keep-up pressure, and temperature is reduced to below 80 ℃, colds pressing.
10. manufacture method according to claim 9 is characterized in that: in the step (3), it is zero volatilization or nearly zero volatilization epoxy anhydride vacuum pressure impregnation resin that the impregnating resin that adopts is handled in vacuum pressure impregnation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362819A (en) * | 2014-11-04 | 2015-02-18 | 天津市天发重型水电设备制造有限公司 | Processing technique of coil winding turn-to-turn insulation |
| CN105510101A (en) * | 2016-01-28 | 2016-04-20 | 哈尔滨理工大学 | Manufacturing method for sample for researching inter-turn insulation aging process of dry-type air-core reactor and flake sample |
| CN109994254A (en) * | 2019-04-15 | 2019-07-09 | 苏州贯龙电磁线有限公司 | A kind of 10kV motor winding wire |
| CN113824235A (en) * | 2021-09-15 | 2021-12-21 | 哈尔滨电气动力装备有限公司 | 10 kV-level motor insulation system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362819A (en) * | 2014-11-04 | 2015-02-18 | 天津市天发重型水电设备制造有限公司 | Processing technique of coil winding turn-to-turn insulation |
| CN104362819B (en) * | 2014-11-04 | 2019-01-04 | 天津市天发重型水电设备制造有限公司 | A kind of coil type winding turn-to-turn insulation processing technology |
| CN105510101A (en) * | 2016-01-28 | 2016-04-20 | 哈尔滨理工大学 | Manufacturing method for sample for researching inter-turn insulation aging process of dry-type air-core reactor and flake sample |
| CN105510101B (en) * | 2016-01-28 | 2018-02-13 | 哈尔滨理工大学 | A kind of preparation method and sheet specimens for being used to study the sample of dry-type air-core reactor turn-to-turn insulation ageing process |
| CN109994254A (en) * | 2019-04-15 | 2019-07-09 | 苏州贯龙电磁线有限公司 | A kind of 10kV motor winding wire |
| CN109994254B (en) * | 2019-04-15 | 2024-04-16 | 苏州贯龙电磁线有限公司 | Winding wire for 10kV motor |
| CN113824235A (en) * | 2021-09-15 | 2021-12-21 | 哈尔滨电气动力装备有限公司 | 10 kV-level motor insulation system |
| CN113824235B (en) * | 2021-09-15 | 2024-04-05 | 哈尔滨电气动力装备有限公司 | 10 kV-level motor insulation system |
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