阅读说明：本技术 大型水下轮缘推进电机定子灌胶工装及灌胶方法 (Large-scale underwater rim propulsion motor stator glue pouring tool and glue pouring method ) 是由 张旭 张宏飞 张亚鸽 伍宇红 田惠兰 赵锐华 杨小平 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种大型水下轮缘推进电机定子灌胶工装及灌胶方法,解决了如何从结构上保证大尺寸电机定子在真空和高温下可靠完成高质量灌胶的问题。制作带有中心轴芯棒和轮辐状加强筋板的铁质支撑筒体(10),在铁质支撑筒体的外侧面上,热套一个铝制的铁芯内腔密封筒罩体(11),并将其放置到电机定子铁芯内腔中,使绕组端部的横截面为L形的筒形密封罩体的内侧环形端面与铝制的铁芯内腔密封筒罩体的端部搭接,并在搭接处设置两层O形密封圈；通过在一端的绕组端部的筒形密封罩体上设置的抽真空引出管,对密封腔进行抽真空,在另一端的绕组端部的筒形密封罩体上设置的注胶引出管,注入密封胶体,实现了对电机定子的整体高质量注胶密封。(The invention discloses a glue pouring tool and a glue pouring method for a large-sized underwater rim propulsion motor stator, and solves the problem of how to ensure that the large-sized motor stator can reliably finish high-quality glue pouring under vacuum and high temperature in terms of structure. Manufacturing an iron support cylinder (10) with a central shaft core rod and a spoke-shaped reinforcing rib plate, sleeving an aluminum iron core inner cavity sealing cylinder cover body (11) on the outer side surface of the iron support cylinder in a hot manner, placing the aluminum iron core inner cavity sealing cylinder cover body into an inner cavity of a motor stator iron core, enabling the inner annular end surface of the cylindrical sealing cover body with the L-shaped cross section of the winding end part to be in lap joint with the end part of the aluminum iron core inner cavity sealing cylinder cover body, and arranging two layers of O-shaped sealing rings at the lap joint; the vacuum-pumping outlet pipe is arranged on the cylindrical sealing cover body at the end part of the winding at one end, the sealing cavity is vacuumized, and the glue injection outlet pipe is arranged on the cylindrical sealing cover body at the end part of the winding at the other end, and sealing glue is injected into the glue injection outlet pipe, so that the whole high-quality glue injection sealing of the motor stator is realized.)

1. A large underwater rim propulsion motor stator glue pouring tool comprises an annular tool underframe (1), a motor stator base (2) is vertically arranged on the annular tool underframe (1), a motor stator iron core (3) is arranged in the motor stator base (2), one end of the motor stator iron core (3) is provided with a stator end winding (4), the other end of the motor stator iron core (3) is provided with a stator end winding (5) at the other end, the motor stator is characterized in that an annular sealing cylinder (6) with an L-shaped cross section at the end winding end at one end is arranged at the outer side of the winding (4) at the end stator end, the annular sealing cylinder (6) at the end winding end at one end, an inner cavity of a motor stator base (2) and the lower end of a motor stator iron core (3) form an annular surrounding cover body for the winding (4) at the end stator end at one end; the outer side of the stator end winding (5) at the other end is provided with an annular sealing cylinder (7) of the winding end at the other end with an L-shaped cross section, the annular sealing cylinder (7) of the winding end at the other end, the inner cavity of the motor stator base (2) and the upper end of the motor stator iron core (3) form an annular surrounding cover body for the stator end winding (5) at the other end; the outer annular end face of the end winding end annular sealing cylinder (6) with the L-shaped cross section is fixedly connected with the inner cavity of the motor base through laser welding, and the inner annular end of the end winding end annular sealing cylinder (6) with the L-shaped cross section is movably arranged on the inner side of the stator core; the outer annular end face of the other end winding end annular sealing cylinder (7) is fixedly connected with the inner cavity of the motor base through laser welding, and the inner annular end of the other end winding end annular sealing cylinder (7) is movably arranged on the inner side of the stator core; an aluminum iron core inner cavity sealing cylinder cover body (11) is arranged in an inner cavity of a motor stator iron core, the inner side annular end of an end winding end annular sealing cylinder (6) with an L-shaped cross section is movably lapped with one end of the aluminum iron core inner cavity sealing cylinder cover body (11), and an O-shaped sealing ring is arranged at the two movable lapping positions; the inner side annular end of the winding end part annular sealing cylinder (7) at the other end with the L-shaped cross section is lapped with the other end part of the iron core cavity sealing cylinder cover body (11) made of aluminum, and an O-shaped sealing ring (12) is arranged at the two movable lapping positions; the aluminum iron core inner cavity sealing cylinder cover body (11) is sleeved on the outer side surface of the iron support cylinder body (8) in a hot mode, a central core shaft (9) is arranged at the center of the iron support cylinder body (8), and a spoke type support plate (10) is arranged between the central core shaft (9) and the inner cavity of the iron support cylinder body (8).

2. The glue pouring tool for the stator of the large-scale underwater rim propulsion motor according to claim 1, characterized in that a glue injection pipe (13) is connected to the lower end face of the left side of an annular sealing cylinder (6) at the end winding end part with an L-shaped cross section, a glue injection machine (15) is connected to the other end of the glue injection pipe (13), and a glue injection switch valve (14) is arranged on the glue injection pipe (13); the upper end face of the right side of the winding end part annular sealing cylinder (7) at the other end is connected with a vacuum tube (16), the other end of the vacuum tube (16) is connected with a vacuum pump (19), and a vacuum switch valve (17) and a transparent observation box body (18) are connected in series on the vacuum tube (16).

3. The glue filling method of the glue filling tool for the stator of the large underwater rim propulsion motor, according to claim 2, comprises the following steps:

firstly, plugging a wire outlet of a motor stator winding by using quick-drying polyurethane; coating vacuum sealing silicone grease on all bolt holes on a sealing cover body of a motor stator for sealing;

secondly, heating the motor stator and the sealing cover by using an electric heating blanket to 100 ℃, preserving heat for 3 hours, connecting a temperature sensor arranged on the stator to a digital display inspection instrument in the heating process, and controlling heating through temperature detection to prevent the motor from being damaged by overheating;

thirdly, starting a vacuum pump (19), opening a vacuumizing switch valve (17), and vacuumizing air in a local sealing cover of the motor stator;

fourthly, when the vacuum degree in the local sealing cover reaches 30 millipascals, opening a glue injection switch valve (14) and injecting glue into the space in the local sealing cover;

fifthly, sealing colloid with the temperature of 100 ℃ enters a sealing space surrounded by an annular sealing cylinder (6) at the end part of a winding, an inner cavity of the motor stator base (2) and the lower end of the motor stator core (3) from a glue injection pipe (13), then enters the stator core, and fills all gaps in the stator core surrounded by an aluminum core inner cavity sealing cylinder cover body (11) and the inner cavity of the motor stator base (2); finally, the winding enters a sealed space surrounded by the annular sealing cylinder (7) at the end part of the winding at the other end, the inner cavity of the motor stator base (2) and the upper end of the motor stator iron core (3);

sixthly, after the transparent observation box body (18) enters the colloid, stopping the vacuum pump (19) to work, continuously observing the condition that the transparent observation box body (18) enters the colloid, and after the transparent observation box body (18) is filled with the colloid, stopping the glue injection machine (15) to work and turning off the glue injection switch valve (14);

seventhly, after the glue injection machine (15), the vacuum pump (19) and the transparent observation box body (18) are removed, the whole device is placed into an oven for glue solidification; baking at 95 ℃ for 2 hours, raising the temperature in the oven to 110 ℃, baking for 3 hours, raising the temperature in the oven to 120 ℃, and baking for 5 hours;

and eighthly, opening the oven, removing the glue injection pipe (13) and the vacuumizing pipe (16) when the temperature is cooled to room temperature, and taking the aluminum iron core inner cavity sealing cylinder cover body (11) and the iron support cylinder body (8) out of the inner cavity of the motor stator through hoisting the central mandrel (9).

Technical Field

The invention relates to a glue pouring tool for an underwater motor stator, in particular to a glue pouring tool and a glue pouring method for a large-scale underwater rim propulsion motor stator.

Background

The rim propeller is a device which combines a propeller on a motor rotor and is applied to the dynamic propulsion of ships, and a permanent magnet motor on the rim propeller belongs to a low-rotating-speed and high-power motor, can realize the function of frequency conversion and speed regulation, and can realize long-term and reliable operation in the speed regulation range; the permanent magnet motor is a key device of the rim propeller; the rim propeller motor stator is completely immersed in seawater, the stator needs to resist the corrosion of the seawater, in order to ensure the electrical performance of the stator, the inside of the stator is required to be completely filled with vacuum glue, and no air bubble can be generated in the glue filling; however, the inner diameter of a stator core of a large-sized underwater rim propulsion motor reaches about 1.2 meters, and for the motor stator with the large diameter, a vacuum box with enough size is needed to meet the requirement of vacuum glue pouring, so that the defect of overlarge equipment investment of the large-sized vacuum box exists; for the large-size motor stator, starting from the economical efficiency of production, many manufacturers adopt a technical scheme of local sealing and vacuumizing to finish the glue pouring process of the motor stator, namely, a cylindrical sealing cover body at the end part of a winding is used for sealing windings at two ends of the stator, an iron core inner cavity is used for sealing the cylindrical cover body and sealing the iron core inner cavity, and finally, the joint of the two sealing cylindrical cover bodies is sealed; after the stator encapsulating is accomplished, according to the technological requirement, will hot jacket a carbon fiber section of thick bamboo in the stator core inner chamber, play the guard action that further shielding sea water corrodes stator core, consequently, foretell locally sealed iron core inner chamber seals the cover of the section of thick bamboo body, after accomplishing the encapsulating and sealing, must take out to make things convenient for going on of subsequent hot jacket carbon fiber section of thick bamboo's operation technology, to this requirement, carry out the process of local seal as follows: firstly, sealing windings at two ends of a stator, buckling a winding end annular sealing cylinder with an L-shaped cross section on end windings at two ends of a motor stator, and welding the outer side end of the winding end annular sealing cylinder with an inner cavity of a motor base in a laser welding mode to ensure that the inner side end of the winding end annular sealing cylinder is arranged at the inner side of the end part of a stator iron core; embedding the inner cavity sealing cylinder cover body of the iron core into the inner cavity of the stator iron core, enabling the end part of the inner cavity sealing cylinder cover body of the iron core to be lapped with the inner side end of the annular sealing cylinder of the end part of the winding, finally arranging an O-shaped sealing ring at the lapping position of the end part of the inner cavity sealing cylinder cover body of the iron core and the inner side end of the annular sealing cylinder of the end part of the winding, and utilizing the high temperature of 100 ℃ of a camera during glue pouring to enable the two sealing cylinders to expand to seal the lapping position; however, this sealing method has the following problems: (1) if the iron core inner cavity sealing barrel cover body is adopted, the problem that the iron core inner cavity sealing barrel cover body is small in thermal expansion amount and cannot reliably seal the iron core inner cavity sealing barrel cover body with the barrel-shaped sealing cover bodies at the winding end parts on the two sides is solved; (2) if the aluminum iron core inner cavity sealing cylinder cover body is adopted, the thermal expansion coefficient of aluminum is twice that of iron, the problem of reliable sealing of the joint of the two sealing covers can be solved, but because the aluminum material has limited rigidity, the deformation of the aluminum iron core inner cavity sealing cylinder cover body is easily caused by the glue filling pressure in glue filling, so that the cracking of the sealing part is induced, and the defect that air enters glue is directly caused; how to ensure that high-quality under-pressure glue pouring can be reliably completed under vacuum and high temperature in structure becomes a problem to be solved on site; in addition, because this kind of motor stator during operation is the complete immersion in sea water, can not have the bubble in the requirement sealing colloid, again because the stator size is great, the gap between the winding of iron core groove and embedding wherein is little, on the local sealed cover body, how to select evacuation hole and injecting glue hole position, guarantee the sealed quality of evacuation encapsulating, also be the problem that needs solve in the encapsulating operation.

Disclosure of Invention

The invention provides a glue pouring tool and a glue pouring method for a large underwater rim propulsion motor stator, and solves the technical problem of how to ensure that the large-size motor stator can reliably finish high-quality glue pouring under vacuum and high temperature in structure.

The invention solves the technical problems by the following technical scheme:

the general concept of the invention is: the winding end parts at two ends of the stator core are respectively provided with independent cylindrical sealing cover bodies with L-shaped cross sections of the winding end parts, and the joint of the outer annular end surface of each cylindrical sealing cover body and the inner cavity of the motor base is fixedly connected together in a laser welding mode, so that the inner annular end surface of each cylindrical sealing cover body with the L-shaped cross section is movably arranged at the inner side of the stator core; manufacturing an iron support cylinder with a central shaft core rod and a spoke-shaped reinforcing rib plate, sleeving an aluminum iron core inner cavity sealing cylinder cover body on the outer side surface of the iron support cylinder in a hot manner, placing the aluminum iron core inner cavity sealing cylinder cover body into an inner cavity of a motor stator iron core, enabling the inner annular end surface of the cylindrical sealing cover body with the L-shaped cross section of the winding end part to be lapped with the end part of the aluminum iron core inner cavity sealing cylinder cover body, and arranging two layers of O-shaped sealing rings at the lapped part; heating the tool and the motor base which are assembled together to 100 ℃, so that the aluminum plate at the lap joint of the sealing cylinder is subjected to thermal expansion, and the reliable sealing of the joint is ensured; and then, the sealed cavity is vacuumized through the vacuumizing outlet pipe arranged on the cylindrical sealing cover body at the end part of the winding at one end, and the glue injection outlet pipe arranged on the cylindrical sealing cover body at the end part of the winding at the other end is injected with sealing glue, so that the whole high-quality glue injection sealing of the motor stator is realized.

A large-scale underwater rim propulsion motor stator glue pouring tool comprises an annular tool underframe, wherein a motor stator base is vertically placed on the annular tool underframe, a motor stator iron core is arranged in the motor stator base, one end of the motor stator iron core is provided with one-end stator end winding, the other end of the motor stator iron core is provided with the other-end stator end winding, the outer side of the one-end stator end winding is provided with one-end winding end annular sealing cylinder with an L-shaped cross section, the one-end winding end annular sealing cylinder, the inner cavity of the motor stator base and the lower end of the motor stator iron core, and an annular surrounding cover body for the one-end stator end winding is formed; the outer side of the stator end winding at the other end is provided with an annular sealing cylinder at the winding end at the other end, the cross section of which is L-shaped, the annular sealing cylinder at the winding end at the other end, the inner cavity of the motor stator base and the upper end of the motor stator iron core form another annular surrounding cover body for the stator end winding at the other end; the outer annular end face of the annular sealing cylinder with the L-shaped cross section and the winding end part at one end is fixedly connected with the inner cavity of the motor base through laser welding, and the inner annular end of the annular sealing cylinder with the L-shaped cross section and the winding end part at one end is movably arranged on the inner side of the stator core; the outer annular end face of the other end winding end annular sealing cylinder is fixedly connected with the inner cavity of the motor base through laser welding, and the inner annular end of the other end winding end annular sealing cylinder is movably arranged on the inner side of the stator core; an aluminum iron core inner cavity sealing cylinder cover body is arranged in an inner cavity of a motor stator iron core, the inner side annular end of an end winding end annular sealing cylinder with an L-shaped cross section is movably lapped with one end part of the aluminum iron core inner cavity sealing cylinder cover body, and an O-shaped sealing ring is arranged at the two movable lapping parts; the inner side annular end of the winding end part annular sealing cylinder at the other end with the L-shaped cross section is lapped with the other end part of the aluminum iron core cavity sealing cylinder cover body, and an O-shaped sealing ring is arranged at the two movable lapping parts; the aluminum iron core inner cavity sealing cylinder cover body is sleeved on the outer side surface of the iron supporting cylinder body in a hot mode, a central core shaft is arranged at the center of the iron supporting cylinder body, and a spoke type supporting plate is arranged between the central core shaft and the inner cavity of the iron supporting cylinder body.

The lower end face of the left side of the annular sealing barrel at the end part of the winding with the L-shaped cross section is connected with a glue injection pipe, the other end of the glue injection pipe is connected with a glue injection machine, and a glue injection switch valve is arranged on the glue injection pipe; and a vacuumizing tube is connected to the upper end face of the right side of the annular sealing cylinder at the end part of the winding at the other end, a vacuum pump is connected to the other end of the vacuumizing tube, and a vacuumizing switch valve and a transparent observation box body are connected to the vacuumizing tube in series.

A glue pouring method of a large underwater rim propulsion motor stator glue pouring tool comprises the following steps:

firstly, plugging a wire outlet of a motor stator winding by using quick-drying polyurethane; coating vacuum sealing silicone grease on all bolt holes on a sealing cover body of a motor stator for sealing;

secondly, heating the motor stator and the sealing cover by using an electric heating blanket to 100 ℃, preserving heat for 3 hours, connecting a PT100 temperature sensor arranged on the stator to a digital display inspection instrument in the heating process, and controlling heating through temperature detection to prevent the motor from being damaged due to overheating;

thirdly, starting a vacuum pump, opening a vacuumizing switch valve, and vacuumizing air in a local sealing cover of the motor stator;

fourthly, when the vacuum degree in the local sealing cover reaches 30 millipascals, opening a glue injection switch valve, and injecting glue into the space in the local sealing cover;

fifthly, the sealing colloid with the temperature of 100 ℃ enters a sealing space surrounded by the annular sealing cylinder at the end part of the winding at one end, the inner cavity of the motor stator base and the lower end of the motor stator core from the glue injection pipe, then enters the stator core, and fills all gaps in the stator core surrounded by the aluminum sealing cylinder cover body of the inner cavity of the iron core and the inner cavity of the motor stator base; finally, the winding enters a sealed space surrounded by the annular sealing cylinder at the end part of the winding at the other end, the inner cavity of the motor stator base and the upper end of the motor stator iron core;

sixthly, after the transparent observation box body enters the colloid, stopping the vacuum pump to work, continuously observing the condition that the transparent observation box body enters the colloid, and after the transparent observation box body is filled with the colloid, stopping the glue injection machine to work and turning off the glue injection switch valve;

seventhly, after the glue injection machine, the vacuum pump and the transparent observation box body are removed, putting the whole device into an oven for glue solidification; baking at 95 ℃ for 2 hours, raising the temperature in the oven to 110 ℃, baking for 3 hours, raising the temperature in the oven to 120 ℃, and baking for 5 hours;

and eighthly, opening the oven, removing the glue injection pipe and the vacuumizing pipe when the temperature is cooled to room temperature, and taking the aluminum iron core inner cavity sealing cylinder cover body and the iron supporting cylinder body out of the inner cavity of the motor stator through the hoisting central mandrel.

The invention adopts the permanent closed cover to the end part of the stator winding, adopts the temporary closed to the inner cavity of the stator iron core, and makes full use of the glue injection temperature to expand the aluminum closed cover, reliably seals the lap joints of the closed covers which are separately arranged, creatively supports the soft aluminum closed cylinder on the iron cylinder, overcomes the defect that the aluminum cylinder is easy to deform due to the glue injection pressure, and after the glue injection is finished and the glue is solidified, the temperature is reduced, and the sealed cylinder is contracted to be convenient to take out; the glue injection port is arranged below the local sealing cover body, the vacuumizing tube is arranged above the local sealing cover body, and the distance between the local sealing cover body and the vacuumizing tube is furthest, so that air in the sealing cover body is pumped out, and no bubbles are left in glue injected colloid.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a sealing cylinder disposed in an inner cavity of a motor core according to the present invention;

FIG. 3 is a sectional view taken along line A-A in FIG. 2;

FIG. 4 is a schematic structural view of the evacuation mechanism on the other end winding end portion annular seal cylinder 7 of the present invention;

fig. 5 is a schematic structural diagram of the glue injection mechanism on the annular sealing cylinder 6 at one end of the winding end part of the invention.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

a large-scale underwater rim propulsion motor stator glue pouring tool comprises an annular tool underframe 1, a motor stator base 2 is vertically placed on the annular tool underframe 1, a motor stator core 3 is arranged in the motor stator base 2, one end of the motor stator core 3 is provided with one end stator end winding 4, the other end of the motor stator core 3 is provided with the other end stator end winding 5, one end winding end annular sealing cylinder 6 with an L-shaped cross section is arranged outside the one end stator end winding 4, the one end winding end annular sealing cylinder 6, an inner cavity of the motor stator base 2 and the lower end of the motor stator core 3 form an annular surrounding cover body for the one end stator end winding 4; the outer side of the stator end winding 5 at the other end is provided with an annular sealing cylinder 7 at the winding end at the other end, the cross section of which is L-shaped, the annular sealing cylinder 7 at the winding end at the other end, the inner cavity of the motor stator base 2 and the upper end of the motor stator iron core 3 form an annular surrounding cover body for the stator end winding 5 at the other end; the outer annular end face of the end winding end annular sealing cylinder 6 with the L-shaped cross section is fixedly connected with the inner cavity of the motor base through laser welding, and the inner annular end of the end winding end annular sealing cylinder 6 with the L-shaped cross section is movably arranged on the inner side of the stator core; the outer annular end face of the other end winding end annular sealing cylinder 7 is fixedly connected with the inner cavity of the motor base through laser welding, and the inner annular end of the other end winding end annular sealing cylinder 7 is movably arranged on the inner side of the stator core; an aluminum iron core inner cavity sealing cylinder cover body 11 is arranged in an inner cavity of a motor stator iron core, the inner side annular end of an end winding end annular sealing cylinder 6 with an L-shaped cross section is movably lapped with one end of the aluminum iron core inner cavity sealing cylinder cover body 11, and an O-shaped sealing ring is arranged at the two movable lapping positions; the inner side annular end of the winding end part annular sealing cylinder 7 at the other end with the L-shaped cross section is lapped with the other end part of the iron core cavity sealing cylinder cover body 11 made of aluminum, and an O-shaped sealing ring 12 is arranged at the two movable lapping positions; the aluminum iron core inner cavity sealing cylinder cover body 11 is sleeved on the outer side surface of the iron support cylinder body 8 in a hot mode, a central core shaft 9 is arranged at the center of the iron support cylinder body 8, and a spoke type support plate 10 is arranged between the central core shaft 9 and the inner cavity of the iron support cylinder body 8.

A glue injection pipe 13 is connected to the lower end face of the left side of the annular sealing cylinder 6 with the L-shaped cross section at the end part of the winding, a glue injection machine 15 is connected to the other end of the glue injection pipe 13, and a glue injection switch valve 14 is arranged on the glue injection pipe 13; the upper end face of the right side of the winding end part annular sealing cylinder 7 at the other end is connected with a vacuum tube 16, the other end of the vacuum tube 16 is connected with a vacuum pump 19, and a vacuum switch valve 17 and a transparent observation box body 18 are connected in series on the vacuum tube 16.

A glue pouring method of a large underwater rim propulsion motor stator glue pouring tool comprises the following steps:

firstly, plugging a wire outlet of a motor stator winding by using quick-drying polyurethane; coating vacuum sealing silicone grease on all bolt holes on a sealing cover body of a motor stator for sealing;

secondly, heating the motor stator and the sealing cover by using an electric heating blanket to 100 ℃, preserving heat for 3 hours, connecting a PT100 temperature sensor arranged on the stator to a digital display inspection instrument in the heating process, and controlling heating through temperature detection to prevent the motor from being damaged due to overheating;

thirdly, starting a vacuum pump 19, opening a vacuumizing switch valve 17, and vacuumizing air in a local sealing cover of the motor stator;

fourthly, when the vacuum degree in the local sealing cover reaches 30 millipascals, opening the glue injection switch valve 14, and injecting glue into the space in the local sealing cover;

fifthly, the sealing colloid with the temperature of 100 ℃ enters a sealing space surrounded by the annular sealing cylinder 6 at the end part of the winding, the inner cavity of the motor stator base 2 and the lower end of the motor stator core 3 from the glue injection pipe 13, then enters the stator core, and fills all gaps in the stator core surrounded by the aluminum core inner cavity sealing cylinder cover body 11 and the inner cavity of the motor stator base 2; finally, the winding enters a sealed space surrounded by the annular sealing cylinder 7 at the end part of the winding at the other end, the inner cavity of the motor stator base 2 and the upper end of the motor stator iron core 3;

sixthly, after the transparent observation box body 18 enters the colloid, stopping the vacuum pump 19 from working, continuously observing the condition that the transparent observation box body 18 enters the colloid, and after the transparent observation box body 18 is filled with the colloid, stopping the glue injection machine 15 from working, and turning off the glue injection switch valve 14;

seventhly, after the glue injection machine 15, the vacuum pump 19 and the transparent observation box body 18 are removed, putting the whole device into an oven for glue solidification; baking at 95 ℃ for 2 hours, raising the temperature in the oven to 110 ℃, baking for 3 hours, raising the temperature in the oven to 120 ℃, and baking for 5 hours;

and eighthly, opening the oven, removing the glue injection pipe 13 and the vacuumizing pipe 16 when the temperature is cooled to room temperature, and taking the aluminum iron core inner cavity sealing cylinder cover body 11 and the iron support cylinder body 8 out of the motor stator inner cavity by hoisting the central mandrel 9.