阅读说明：本技术 一种电机转子自修复式绝缘处理工艺 (Self-repairing type insulation treatment process for motor rotor ) 是由 高中怀 于 2021-05-18 设计创作，主要内容包括：本发明公开了一种电机转子自修复式绝缘处理工艺,属于转子技术领域,本发明可以通过在熔融原料内掺入检测线,并在挤出后预埋至型坯内,然后在模具内通入压缩气体对型坯进行吹胀时,由于型坯的吹胀拉伸,检测线发生预断动作,从而开始对型坯的胀裂现象进行检测,一旦出现胀裂现象时,压缩气体会沿着胀裂区域进入到检测线中进行充填,然后利用内部膨胀动作挤出预先填充的熔融原料,迫使熔融原料流出至胀裂区域进行补料,并在压缩气体的挤压作用下与型坯实现良好的结合,从而对胀裂区域进行吹胀过程中的自主修复,一方面可以避免胀裂区域进一步扩大,提高制品质量,另一方面预埋在制品内也可以有效提高机械强度。(The invention discloses a self-repairing insulation processing technique of a motor rotor, belonging to the technical field of rotors, which can be used for detecting the bursting phenomenon of a parison by doping a detection line in a molten raw material, embedding the detection line into the parison after extrusion, then leading compressed gas into a die to blow the parison, leading the blowing and stretching of the parison, leading the detection line to generate pre-breaking action so as to start to detect the bursting phenomenon of the parison, leading the compressed gas to enter the detection line along a bursting area to be filled once the bursting phenomenon occurs, then extruding the pre-filled molten raw material by utilizing internal expansion action, forcing the molten raw material to flow out to the bursting area to be supplemented, realizing good combination with the parison under the extrusion action of the compressed gas, thereby autonomously repairing the bursting area in the blowing process, on the one hand, avoiding the further expansion of the bursting area and improving the product quality, on the other hand, the mechanical strength can be effectively improved by embedding the composite material in a product.)

1. A self-repairing insulation treatment process for a motor rotor is characterized by comprising the following steps: the method comprises the following steps:

s1, carrying out preheating treatment on the rotor for 10-12min at the preheating temperature of 125-145 ℃;

s2, immersing the rotor in a paint tank, conveying insulating paint and vacuumizing until no bubbles are generated, and immersing the rotor in the paint for 20-40 min;

s3, uniformly adsorbing a plurality of self-repairing balls through the strip-shaped magnetic plate, then aligning the self-repairing balls with the extending direction of the rotor, attaching and pressing the self-repairing balls, and repeating the operation until the whole rotor is covered;

s4, heating and gelling the rotor to form a surface paint film, and then continuously heating to force the insulating paint to be fully cured;

and S5, pre-embedding the self-repairing balls in the insulating paint, and releasing the stored insulating paint for repairing under the action of centrifugal force after the damage is sensed.

2. The self-repairing insulation treatment process of the motor rotor according to claim 1, wherein: before the insulating varnish is conveyed in the step S2, pre-vacuum is performed to less than 120pa, and the vacuum is maintained for 150 min.

3. The self-repairing insulation treatment process of the motor rotor according to claim 1, wherein: the self-repairing ball comprises a sensing spherical shell (1), a supporting column (2) and a magnetic suction end (3), wherein the supporting column (2) is embedded and connected on the sensing spherical shell (1), the magnetic suction end (3) is embedded and connected at one end of the sensing spherical shell (1) far away from the supporting column (2), one end of the supporting column (2) is connected with the magnetic suction end (3) in a connecting way, the other end of the supporting column (2) penetrates through the sensing spherical shell (1) and extends to the outside, one end, close to the magnetic suction end (3), of the sensing spherical shell (1) is embedded and connected with a blocking air bag (4), a plurality of repairing holes which are uniformly distributed are formed in the sensing spherical shell (1), a repairing block (5) is embedded in each repairing hole, the repairing block (5) is positioned on an outer hemisphere of the sensing spherical shell (1) and far away from the magnetic suction end (3) relative to the blocking air bag (4), a material pressing film (9) is connected in the sensing spherical shell (1), and the repairing block (5) is positioned between the blocking air bag (4) and the pressing film (9), insulating paint is filled between the blocking air bag (4) and the pressing film (9).

4. The self-repairing insulation treatment process of the motor rotor according to claim 3, wherein: repair piece (5) including triggering layer (51), leakage-proof layer (52) and many stay wires (53), it inlays in repairing downtheholely to trigger layer (51), leakage-proof layer (52) are connected in the one end that triggers layer (51) and be close to support column (2), and leakage-proof layer (52) and perception spherical shell (1) inner wall connection, stay wire (53) evenly connected between triggering layer (51) and support column (2).

5. The self-repairing insulation treatment process of the motor rotor according to claim 4, wherein: the trigger layer (51) comprises a plurality of trigger blocks which are densely distributed, each trigger block comprises a heat insulation layer (6), a self-heating layer (7) and a plurality of heat conduction wires (8), the self-heating layer (7) is connected to the inner end wall of the heat insulation layer (6), and the heat conduction wires (8) are uniformly embedded in the self-heating layer (7).

6. The self-repairing insulation treatment process of the motor rotor according to claim 5, wherein: the heat insulation layer (6) is made of an insulating heat insulation material, the self-heating layer (7) is made into a bag-shaped structure by adopting a breathable film, and the self-heating layer (7) is filled with a reduced nano iron powder simple substance.

7. The self-repairing insulation treatment process of the motor rotor according to claim 3, wherein: ceramic powder is filled between one side of the pressing film (9) far away from the magnetic suction end (3) and the support column (2), and the ceramic powder is filled fully.

8. The self-repairing insulation treatment process of the motor rotor according to claim 4, wherein: the leakage-proof layer (52) is made of hot melt materials, and the sensing spherical shell (1) and the supporting columns (2) are made of insulating materials.

9. The self-repairing insulation treatment process of the motor rotor according to claim 1, wherein: the maximum length of the self-repairing ball is consistent with the coating thickness of the insulating paint.

10. The self-repairing insulation treatment process of the motor rotor according to claim 1, wherein: the gelation temperature in the step S4 is 120-130 ℃, the gelation time is 10-12min, the curing temperature is 140-160 ℃, and the curing time is 12-15 min.

Technical Field

The invention relates to the technical field of rotors, in particular to a self-repairing insulation treatment process for a motor rotor.

Background

The rotor of the motor is a part rotating in the motor, and the motor consists of a rotor and a stator and is a conversion device for realizing electric energy and mechanical energy and electric energy. The motor rotor is divided into a motor rotor and a generator rotor, and the motor rotor is divided into an inner rotor rotation mode and an outer rotor rotation mode. The inner rotor rotates in such a way that a core body in the middle of the motor is a rotating body, and torque (referred to as a motor) is output or energy is input (referred to as a generator). The outer rotor rotation mode is that the motor outer body is used as a rotating body, and different modes are convenient for application in various occasions.

The insulation paint dipping treatment of the stator and the rotor of the motor is an important link in the manufacturing process of the stator and the rotor of the motor, which is directly related to the service life of the motor. In the insulating dip coating treatment process, the existing insulating dip coating baking treatment modes mainly comprise two modes, wherein one mode is that a stator and a rotor of a motor are vertically arranged in a baking room and are baked in a static state; the other method is to place the stator and the rotor of the motor in the baking room and carry out baking treatment in a rotating mode. After the motor rotor is soaked in paint, the motor rotor is baked in a rotary baking mode, and the motor rotor has the advantages of good filling property of winding insulating paint, less paint loss in the baking process, uniform paint coating on the surface of a winding and the like, and is widely applied at present.

However, in the actual use process of the rotor, because the environmental temperature changes greatly and frequently, and some mechanical impact easily occurs, the insulating paint layer on the surface of the rotor is damaged, such as cracks, once the damage occurs, the damage is not discovered and treated in time in the initial stage, the damage is easily expanded, and finally, the insulating performance of the insulating paint layer is reduced or even fails.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a self-repairing type insulation treatment process for a motor rotor, which comprises the steps of uniformly adsorbing a plurality of self-repairing balls through a strip-shaped magnetic plate after paint dipping, aligning the extending direction of a rotor, fitting and pressing, repeating the operation until the whole rotor is covered, curing and embedding the insulating paint in the insulating paint, extending the insulating paint to the surface for damage sensing, wherein due to the existence of the self-repairing balls, the strength of a joint part is low, the insulating layer is damaged and cracked by thermal stress or mechanical impact and concentrated to the vicinity of the self-repairing balls, namely uncontrollable damage is actively guided to the self-repairing balls, once the surface damage occurs, the communication action between the self-repairing balls and the outside is triggered based on centrifugal force under the rotation action of the rotor, then the stored insulating paint is released to be filled to the damage part, and heat is generated to cure the self-repairing balls, self-repairing of the damaged part is realized, and the service life of the rotor is prolonged.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A self-repairing insulation treatment process for a motor rotor comprises the following steps:

s1, carrying out preheating treatment on the rotor for 10-12min at the preheating temperature of 125-145 ℃;

s2, immersing the rotor in a paint tank, conveying insulating paint and vacuumizing until no bubbles are generated, and immersing the rotor in the paint for 20-40 min;

s3, uniformly adsorbing a plurality of self-repairing balls through the strip-shaped magnetic plate, then aligning the self-repairing balls with the extending direction of the rotor, attaching and pressing the self-repairing balls, and repeating the operation until the whole rotor is covered;

s4, heating and gelling the rotor to form a surface paint film, and then continuously heating to force the insulating paint to be fully cured;

and S5, pre-embedding the self-repairing balls in the insulating paint, and releasing the stored insulating paint for repairing under the action of centrifugal force after the damage is sensed.

Further, before the insulating varnish is conveyed in the step S2, pre-vacuum is performed to less than 120pa, and the vacuum is maintained for 150 min.

Furthermore, the self-repairing ball comprises a sensing spherical shell, a supporting column and a magnetic suction end, wherein the supporting column is connected to the sensing spherical shell in an embedded manner, the magnetic suction end is connected to one end of the sensing spherical shell, which is far away from the supporting column, in an embedded manner, one end of the supporting column is connected with the magnetic suction end, the other end of the supporting column penetrates through the sensing spherical shell and extends to the outside, one end of the sensing spherical shell, which is close to the magnetic suction end, is connected with a blocking air bag in an embedded manner, a plurality of repairing holes which are uniformly distributed are formed in the sensing spherical shell, repairing blocks are embedded in the repairing holes and are positioned on the outer hemisphere of the sensing spherical shell and far away from the magnetic suction end relative to the blocking air bag, a material pressing film is connected in the sensing spherical shell, the repairing blocks are positioned between the blocking air bag and the pressing film, insulating paint is filled between the blocking air bag and the pressing film, the sensing spherical shell is supported by the supporting column, and the magnetic suction action on the magnetic suction end is utilized to position the blocking air bag, the piece can in time be perceived repairing after appearing the damage to separate and external environment intercommunication under the effect of centrifugal force, then insulating varnish releases to the damage department under the effect of centrifugal force, and the putty gasbag also can be gone on the shutoff to the damage department to outside inflation under the squeezing action of insulating varnish simultaneously, and the insulating varnish of avoiding releasing away drops under the effect of centrifugal force.

Further, the restoration piece is including triggering the layer, preventing the leakage layer and many acting as go-between, it inlays in the restoration downthehole to trigger the layer, prevent that the leakage layer connects in the one end that the layer is close to the support column that triggers, and prevents leakage layer and perception spherical shell inner wall connection, act as go-between even connection between triggering layer and support column, prevent that the leakage layer plays the shutoff effect, and insulating varnish can't release away through the layer that triggers, and separation and external environment intercommunication can appear in the layer that triggers after appearing the damage under the centrifugal force effect, and the acting as go-between plays the traction to the layer that triggers, avoids it to appear the obscission.

Further, the trigger layer includes a plurality of trigger blocks that distribute densely, the trigger block includes insulating layer, self-heating layer and a plurality of heat conduction silk, connect on the insulating layer inner wall from the heat layer, heat conduction silk evenly inlays on self-heating layer, and insulating layer dense distribution isolated external environment under the normal condition, and avoids the heating interference in initial stage to the leakage-proof layer, and the gap appears in the trigger block separation after appearing damaging, and the external air can get into and contact with self-heating layer, then the reaction releases the heat and melts the leakage-proof layer, and insulating varnish can release, and the heat also can be used for the heating solidification to insulating varnish simultaneously.

Furthermore, the heat-insulating layer is made of an insulating heat-insulating material, the self-heating layer is of a bag-shaped structure made of a breathable film, a reduced nano iron powder simple substance is filled in the self-heating layer, the contact area of the reduced nano iron powder simple substance is very large, and the reduced nano iron powder simple substance can fully react with oxygen in the air so as to release a large amount of heat, on one hand, the heat-insulating layer is used for melting the leakage-proof layer, and on the other hand, the released insulating paint can be heated and solidified.

Further, press the material membrane to keep away from to inhale to fill between holding one side and the support column and have ceramic powder, and ceramic powder is full to fill, can improve the stability of perception spherical shell relatively to can fully extrude pressing the material membrane under the centrifugal force effect, thereby fully release sufficient insulated paint.

Furthermore, the leakage-proof layer is made of hot-melt materials, and the sensing spherical shell and the supporting columns are made of insulating materials.

Further, the maximum length of the self-repairing ball is consistent with the coating thickness of the insulating paint.

Further, the gelation temperature in the step S4 is 120-130 ℃, the gelation time is 10-12min, the curing temperature is 140-160 ℃, and the curing time is 12-15 min.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the scheme can be realized by uniformly adsorbing a plurality of self-repairing balls through the strip-shaped magnetic plate after the paint dipping is finished, then the rotor is jointed and pressed in the extending direction of the rotor, the operation is repeated until the whole rotor is covered, then the rotor is pre-embedded in the rotor along with the curing of the insulating varnish and extends to the surface for damage perception, because the self-repairing ball exists, the strength of the joint is low, so that the thermal stress or mechanical impact damage cracking of the insulating layer can be concentrated near the self-repairing ball, namely, the uncontrollable damage can be actively guided to the self-repairing ball, once the surface damage occurs, under the rotation action of the rotor, the self-repairing ball is triggered to communicate with the outside based on the centrifugal force, and then the stored insulating paint is released to be filled to the damaged part, and heat is generated to heat and solidify the insulating paint, so that the self-repairing of the damaged part is realized, and the service life of the rotor is prolonged.

(2) The self-repairing ball comprises a sensing spherical shell, a support column and a magnetic suction end, wherein the support column is connected to the sensing spherical shell in an embedded manner, the magnetic suction end is connected to one end, far away from the support column, of the sensing spherical shell in an embedded manner, one end of the support column is connected with the magnetic suction end, the other end of the support column penetrates through the sensing spherical shell and extends to the outside, one end, close to the magnetic suction end, of the sensing spherical shell is connected with a plugging air bag in an embedded manner, a plurality of repairing holes which are uniformly distributed are formed in the sensing spherical shell, repairing blocks are embedded in the repairing holes, are positioned on an outer hemisphere of the sensing spherical shell and far away from the magnetic suction end relative to the plugging air bag, a material pressing film is connected in the sensing spherical shell, the repairing blocks are positioned between the plugging air bag and the material pressing film, insulating paint is filled between the plugging air bag and the pressing film, the sensing spherical shell is supported by the support column, the magnetic suction effect on the magnetic suction end is utilized to position the repairing blocks, and can be sensed in time after damage occurs, and separate and external environment intercommunication under the effect of centrifugal force, then insulating varnish releases to the damage department under the effect of centrifugal force, and the putty gasbag also can be in the outside inflation under the extrusion of insulating varnish and carry out the shutoff to the damage department simultaneously, and the insulating varnish of avoiding releasing comes off under the effect of centrifugal force.

(3) The restoration piece is including triggering the layer, leakage layer and many act as go-between, it inlays in the restoration downthehole to trigger the layer, leakage layer connection is in the one end that the layer is close to the support column that triggers, and leakage layer and perception spherical shell inner wall connection prevent, act as go-between evenly connected between triggering layer and support column, leakage layer plays the shutoff effect, insulating varnish can't release away through triggering the layer, separation and external environment intercommunication can appear in the damage back triggering layer under the centrifugal force effect, the act as go-between plays the traction to triggering the layer, avoid it to appear the obscission.

(4) The trigger layer includes the trigger piece of a plurality of intensive distributions, the trigger piece includes the insulating layer, from heat layer and a plurality of heat conduction silk, from heat layer connection on insulating layer inner wall, the heat conduction silk is evenly inlayed in from the heat layer, insulating layer intensive distribution isolated external environment under the normal condition, and avoid the heating interference in initial stage to the leakage-proof layer, the gap appears in the separation of trigger piece after appearing damaging, the external air can get into and contact from the heat layer, then the reaction releases the heat and melts the leakage-proof layer, insulating varnish can release, the heat also can be used for the heating solidification to insulating varnish simultaneously.

(5) The insulating layer adopts insulating heat insulating material to make, from hot layer adoption ventilated membrane to make the saccular structure, and from hot intussuseption packing have reduced nanometer iron powder simple substance, and reduced nanometer iron powder simple substance area of contact is very big, can fully react with the oxygen in the air to release a large amount of heats, be used for melting the leak protection layer on the one hand, on the other hand can heat the insulated paint solidification of going out.

(6) The material pressing film is far away from the magnetic attraction end, ceramic powder is filled between one side of the material pressing film and the supporting column, the ceramic powder is fully filled, the stability of the sensing spherical shell can be relatively improved, the material pressing film can be fully extruded under the action of centrifugal force, and therefore sufficient insulating paint is fully released.

Drawings

FIG. 1 is a schematic view of a rotor according to the present invention;

FIG. 2 is a schematic structural diagram of the pre-buried self-repairing ball of the present invention;

FIG. 3 is a schematic structural view of a self-healing ball according to the present invention;

FIG. 4 is a cross-sectional view of a self-healing ball of the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 4;

FIG. 6 is a schematic diagram of a trigger block according to the present invention.

The reference numbers in the figures illustrate:

1 perception spherical shell, 2 support columns, 3 magnetic attraction ends, 4 blocking air bags, 5 repair blocks, 51 trigger layers, 52 leakage-proof layers, 53 stay wires, 6 heat insulation layers, 7 self-heating layers, 8 heat-conducting wires and 9 pressing material films.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of 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 be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-2, a self-repairing insulation treatment process for a motor rotor includes the following steps:

s1, preheating the rotor for 10min at 125 ℃;

s2, immersing the rotor in a paint tank, conveying insulating paint, vacuumizing until no bubbles are generated, and immersing for 20 min;

s3, uniformly adsorbing a plurality of self-repairing balls through the strip-shaped magnetic plate, then aligning the self-repairing balls with the extending direction of the rotor, attaching and pressing the self-repairing balls, and repeating the operation until the whole rotor is covered;

s4, heating and gelling the rotor to form a surface paint film, and then continuously heating to force the insulating paint to be fully cured;

and S5, pre-embedding the self-repairing balls in the insulating paint, and releasing the stored insulating paint for repairing under the action of centrifugal force after the damage is sensed.

Before the insulating varnish is conveyed in the step S2, pre-vacuum is performed to less than 120pa, and the vacuum is maintained for 150 min.

The maximum length of the self-repairing ball is consistent with the coating thickness of the insulating paint.

In step S4, the gelling temperature is 120 ℃, the gelling time is 10min, the curing temperature is 140 ℃, and the curing time is 12 min.

Referring to fig. 3-4, the self-repairing ball includes a sensing spherical shell 1, a supporting pillar 2 and a magnetic attraction end 3, the supporting pillar 2 is embedded and connected to the sensing spherical shell 1, the magnetic attraction end 3 is embedded and connected to one end of the sensing spherical shell 1 far from the supporting pillar 2, and one end of the supporting pillar 2 is connected to the magnetic attraction end 3 and the other end extends to the outside through the sensing spherical shell 1, one end of the sensing spherical shell 1 near the magnetic attraction end 3 is embedded and connected to a blocking air bag 4, the sensing spherical shell 1 is provided with a plurality of repairing holes distributed uniformly, the repairing holes are embedded with repairing blocks 5, the repairing blocks 5 are located on the outer hemisphere of the sensing spherical shell 1 and far from the magnetic attraction end 3 relative to the blocking air bag 4, the sensing spherical shell 1 is connected to a pressing film 9, the repairing blocks 5 are located between the blocking air bag 4 and the pressing film 9, an insulating paint is filled between the blocking air bag 4 and the pressing film 9, the sensing spherical shell 1 is supported by the supporting pillar 2, and utilize magnetism to inhale end 3 and inhale the effect and fix a position it, restore piece 5 can in time perception after the damage appears to separate and external environment intercommunication under the effect of centrifugal force, then insulating varnish releases to the damage under the effect of centrifugal force, putty gasbag 4 also can be in the extrusion of insulating varnish outside inflation under the effect of extrusion and carry out the shutoff to the damage simultaneously, and the insulating varnish of avoiding releasing drops under the effect of centrifugal force.

Referring to fig. 5, the repair block 5 includes a trigger layer 51, a leakage-proof layer 52 and a plurality of pull wires 53, the trigger layer 51 is embedded in the repair hole, the leakage-proof layer 52 is connected to one end of the trigger layer 51 close to the supporting pillar 2, the leakage-proof layer 52 is connected to the inner wall of the sensing spherical shell 1, the pull wires 53 are uniformly connected between the trigger layer 51 and the supporting pillar 2, the leakage-proof layer 52 plays a role in plugging, the insulating varnish cannot be released through the trigger layer 51, the trigger layer 51 can be separated under the action of centrifugal force after damage, and is communicated with the external environment, and the pull wires 53 play a role in drawing the trigger layer 51, so as to avoid the falling phenomenon.

Referring to fig. 6, the trigger layer 51 includes a plurality of trigger blocks distributed densely, each trigger block includes a heat insulating layer 6, a self-heating layer 7, and a plurality of heat conducting wires 8, the self-heating layer 7 is connected to an inner end wall of the heat insulating layer 6, the heat conducting wires 8 are uniformly embedded in the self-heating layer 7, the heat insulating layer 6 is distributed densely to isolate the external environment in a normal state, and the initial heating interference to the leakage-proof layer 52 is avoided, after damage occurs, the trigger blocks are separated to form gaps, external air can enter and contact with the self-heating layer 7, then the external air reacts to release heat to melt the leakage-proof layer 52, the insulating paint can be released, and the heat can also be used for heating and curing the insulating paint.

The heat insulation layer 6 is made of an insulating heat insulation material, the self-heating layer 7 is of a bag-shaped structure made of a breathable film, a reduced nano iron powder simple substance is filled in the self-heating layer 7, the contact area of the reduced nano iron powder simple substance is very large, and the reduced nano iron powder simple substance can fully react with oxygen in the air so as to release a large amount of heat, on one hand, the heat insulation layer is used for melting the leakage-proof layer 52, and on the other hand, the released insulating paint can be heated and solidified.

Pressing material membrane 9 to keep away from to inhale to have ceramic powder between 3 one side of magnetism and the support column 2, and ceramic powder is full of the packing, can improve perception spherical shell 1's stability relatively to can be fully extrude pressing material membrane 9 under the centrifugal force effect, thereby fully release sufficient insulating varnish.

The leakage-proof layer 52 is made of hot melt material, and the sensing spherical shell 1 and the supporting column 2 are made of insulating heat-insulating materials.

Example 2:

a self-repairing insulation treatment process for a motor rotor comprises the following steps:

s1, preheating the rotor for 11min at 135 ℃;

s2, immersing the rotor in a paint tank, conveying insulating paint, vacuumizing until no bubbles are generated, and immersing for 30 min;

s3, uniformly adsorbing a plurality of self-repairing balls through the strip-shaped magnetic plate, then aligning the self-repairing balls with the extending direction of the rotor, attaching and pressing the self-repairing balls, and repeating the operation until the whole rotor is covered;

s4, heating and gelling the rotor to form a surface paint film, and then continuously heating to force the insulating paint to be fully cured;

and S5, pre-embedding the self-repairing balls in the insulating paint, and releasing the stored insulating paint for repairing under the action of centrifugal force after the damage is sensed.

Before the insulating varnish is conveyed in the step S2, pre-vacuum is performed to less than 120pa, and the vacuum is maintained for 150 min.

The maximum length of the self-repairing ball is consistent with the coating thickness of the insulating paint.

In step S4, the gelling temperature is 125 ℃, the gelling time is 11min, the curing temperature is 150 ℃, and the curing time is 13 min.

The remainder was in accordance with example 1.

Example 3:

a self-repairing insulation treatment process for a motor rotor comprises the following steps:

s1, preheating the rotor for 12min at 145 ℃;

s2, immersing the rotor in a paint tank, conveying insulating paint, vacuumizing until no bubbles are generated, and immersing for 40 min;

s3, uniformly adsorbing a plurality of self-repairing balls through the strip-shaped magnetic plate, then aligning the self-repairing balls with the extending direction of the rotor, attaching and pressing the self-repairing balls, and repeating the operation until the whole rotor is covered;

s4, heating and gelling the rotor to form a surface paint film, and then continuously heating to force the insulating paint to be fully cured;

and S5, pre-embedding the self-repairing balls in the insulating paint, and releasing the stored insulating paint for repairing under the action of centrifugal force after the damage is sensed.

Before the insulating varnish is conveyed in the step S2, pre-vacuum is performed to less than 120pa, and the vacuum is maintained for 150 min.

In step S4, the gelling temperature is 130 ℃, the gelling time is 12min, the curing temperature is 160 ℃, and the curing time is 15 min.

The remainder was in accordance with example 1.

It is noted that insulating pigments may be incorporated into the insulating varnish and the technician may be prompted to take further action to repair the rotor while repairing.

According to the invention, after paint dipping is finished, a plurality of self-repairing balls are uniformly adsorbed by the strip-shaped magnetic plate, then the self-repairing balls are attached and pressed along the extending direction of the rotor, the operation is repeated until the whole rotor is covered, then the self-repairing balls are embedded in the rotor along with the curing of the insulating paint and extend to the surface for damage perception, because of the existence of the self-repairing balls, the strength of the joint is low, the cracking of an insulating layer caused by thermal stress or mechanical impact damage can be concentrated near the self-repairing balls, namely, uncontrollable damage is actively guided to the self-repairing balls, once the surface damage occurs, the communication action between the self-repairing balls and the outside can be triggered based on centrifugal force under the rotating action of the rotor, then the stored insulating paint is released and filled to the damage, heat is generated to heat and cure the damage, the self-repairing of the damage is realized, and the service life of the rotor is prolonged.

The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.