阅读说明：本技术 一种定子绕组端部加强的发电机 (Generator with reinforced stator winding end ) 是由 刘雪姣 罗建群 欧阳志宏 李康 于 2021-06-28 设计创作，主要内容包括：本发明公开了一种定子绕组端部加强的发电机,包括电机本体、保护电机本体的机座,所述定子包括定子铁心、定子绕组,所述定子绕组上设置有定子绕组加强结构,所述定子绕组加强结构包括绕组端部细固定带、绕组端部粗固定带、绕组根部绑扎带、定子槽绝缘纸,所述绕组端部细固定带设置在所述定子绕组远离所述定子铁心方向端,所述定子绕组与所述绕组端部细固定带之间设置有绕组端部粗固定带,所述绕组根部绑扎带与所述定子槽绝缘纸均设置在所述定子绕组靠近所述定子铁心方向端。本发明具有成本低,绑扎方便简单,提高定子绕组端部的刚度及定子绕组绝缘的可靠性的优点。(The invention discloses a generator with a reinforced stator winding end part, which comprises a motor body and a base for protecting the motor body, wherein a stator comprises a stator core and a stator winding, a stator winding reinforcing structure is arranged on the stator winding, the stator winding reinforcing structure comprises a winding end part thin fixing belt, a winding end part thick fixing belt, a winding root binding belt and stator slot insulating paper, the winding end part thin fixing belt is arranged at the end of the stator winding far away from the stator core, the winding end part thick fixing belt is arranged between the stator winding and the winding end part thin fixing belt, and the winding root binding belt and the stator slot insulating paper are both arranged at the end of the stator winding near the stator core. The invention has the advantages of low cost, convenient and simple binding, and improved rigidity of the stator winding end part and reliability of stator winding insulation.)

1. A generator with reinforced stator winding ends, characterized in that,

the motor comprises a motor body and a base for protecting the motor body, wherein the motor body comprises a rotating shaft, a front end cover, a stator, a rotor and a rear end cover, the front end cover and the rear end cover are respectively arranged at the front end and the rear end of the base, the rotor is arranged on the rotating shaft and synchronously rotates with the rotating shaft, the stator is arranged on the base and is positioned above the rotor, the stator comprises a stator core and a stator winding, the stator winding is arranged on the side wall of the stator core, a stator winding reinforcing structure is arranged on the stator winding, the stator winding reinforcing structure comprises a winding end part thin fixing belt, a winding end part thick fixing belt, a winding root binding belt and stator slot insulating paper, the winding end part thin fixing belt is arranged at the position where the stator winding is far away from the stator core direction end, and a winding end part thick fixing belt is arranged between the stator winding and the winding end part thin fixing belt, and the winding root binding belt and the stator slot insulating paper are arranged at the end of the stator winding close to the stator core.

2. A stator-winding-end-reinforced generator according to claim 1,

and a winding end part thick fixing belt is arranged at about 2/3 positions of the end part of the stator winding from the end surface of the stator core along the circumferential direction.

3. A stator-winding-end-reinforced generator according to claim 2,

the coil end coarse fixing belt is made of polyester sheath glass fiber ropes, and a circle of the coarse fixing belt is placed at the position, about 2/3, of the end of the stator winding from the end face of the stator core along the circumferential direction.

4. A stator-winding-end-reinforced generator according to claim 3,

the thin binding belt material at the end part of the coil adopts a polyester sheath glass yarn rope, and the thick fixing belt at the end part of the winding is tightly bound with the stator winding.

5. A stator-winding-end-reinforced generator according to claim 4,

the winding root fine binding belt material adopts polyester sheath glass silk ropes, and the stator slot insulating paper and the stator winding are tightly bound together at the position close to the end face of the stator core by adopting an S-shaped binding method.

6. A stator-winding-end-reinforced generator according to claim 1,

the frame lateral wall is provided with the mount, the mount is convenient for the stability of frame operation, the mount sets up to two sets ofly, and the slope sets up on the lateral wall of frame, the axis symmetry setting of frame is followed to the mount.

7. A stator-winding-end-reinforced generator according to claim 1,

the outer side wall of the machine base is provided with radiating fins which are evenly arranged on the outer side wall of the machine base at intervals.

Technical Field

The invention relates to a generator, in particular to a generator with a reinforced stator winding end part.

Background

In the generator, the stator winding of the low-voltage diesel generator is usually a loose winding, and the stator winding is composed of a straight line part and two end parts, wherein the straight line part is arranged in a stator slot of a stator core, and the two end parts are respectively arranged at two ends outside the stator core.

In general, the stator winding ends of the scattered windings are fixed only by binding the stator winding ends together by using a thin binding belt, and the stator slot insulating paper and the stator windings are tightly bound together without binding belts at the position close to the end face of the stator core.

Because the thick fixing belt at the end part of the coil is not arranged, the end part of the stator winding is difficult to form a whole with certain rigidity after the vacuum pressure is dipped in the insulating paint. The vibration when the generator operates and the electromagnetic force have the effect of electromagnetic force to the stator winding when the generator changes transiently, and the insulation of the end part and the insulation of the root part of the stator winding are easily damaged.

Because no coil root binding belt exists, the stator slot insulating paper and the stator winding cannot be bound together. The stator slot insulating paper is easily torn in the shaping process of the stator winding end, and after the insulating paint is dipped in vacuum pressure, the insulating paint entering the stator core slot is easily lost in the process of dripping the insulating paint, so that the insulating quality in the stator core slot is influenced to a certain extent.

Disclosure of Invention

The invention aims to provide a generator with a reinforced stator winding end. The end part of the stator winding is added with a thick fixing band at the end part of a polyester sheath glass fiber rope winding, a thin binding band at the end part of the winding and a binding band at the root part of the winding, and after the insulating paint is soaked by vacuum pressure, the purposes of strengthening the rigidity of the end part of the stator winding and improving the insulating quality of the stator winding are achieved;

in order to solve the technical problems, the invention provides the following technical scheme:

the invention provides a generator with reinforced stator winding end,

the motor comprises a motor body and a base for protecting the motor body, wherein the motor body comprises a rotating shaft, a front end cover, a stator, a rotor and a rear end cover, the front end cover and the rear end cover are respectively arranged at the front end and the rear end of the base, the rotor is arranged on the rotating shaft and synchronously rotates with the rotating shaft, the stator is arranged on the base and is positioned above the rotor, the stator comprises a stator core and a stator winding, the stator winding is arranged on the side wall of the stator core, a stator winding reinforcing structure is arranged on the stator winding, the stator winding reinforcing structure comprises a winding end part thin fixing belt, a winding end part thick fixing belt, a winding root binding belt and stator slot insulating paper, the winding end part thin fixing belt is arranged at the position where the stator winding is far away from the stator core direction end, and a winding end part thick fixing belt is arranged between the stator winding and the winding end part thin fixing belt, and the winding root binding belt and the stator slot insulating paper are arranged at the end of the stator winding close to the stator core.

Preferably, the stator winding reinforcing structure binding comprises the following steps:

s1: after a stator winding is well arranged in the stator core, a winding end part thick fixing band is arranged at the position of 2/3 degrees from the end surface of the stator core at the end part of the stator winding along the circumferential direction;

s2: then the winding end part thin binding belt is used for binding the winding end part thick fixing belt and the stator winding end part together;

s3: and (3) binding the stator slot insulating paper and the stator winding together by using a winding root binding belt at the end part of the stator winding, which is close to the end surface of the stator core, by adopting an S-shaped binding method.

Preferably, the coil end coarse fixing belt material is a polyester sheath glass rope, and a circle of the polyester sheath glass rope is placed at the position, about 2/3, of the end of the stator winding from the end face of the stator core along the circumferential direction.

Preferably, the fine binding band at the end part of the coil is made of a polyester sheath glass rope, and the thick fixing band at the end part of the winding is tightly bound with the stator winding.

Preferably, the winding root fine binding belt material is polyester sheath glass fiber ropes, and the stator slot insulating paper and the stator winding are bound together by an S-shaped binding method at the position close to the end face of the stator core.

Preferably, the frame lateral wall is provided with the mount, the mount is convenient for the stability of frame operation, the mount sets up to two sets ofly, and the slope sets up on the lateral wall of frame, the mount sets up along the axis symmetry of frame.

Preferably, the outer side wall of the machine base is provided with radiating fins which are evenly arranged on the outer side wall of the machine base at intervals.

The invention has the beneficial effects

The invention adopts a reinforced structure at the end part of the stator winding, can select fixing bands and binding bands with different thicknesses according to the power of the generator and the length of the end part of the stator winding, achieves the purposes of improving the rigidity of the end part of the stator winding and the insulation quality of the stator winding, and prevents the insulation of the stator winding from being damaged by electromagnetic force due to the vibration of the operation of the generator and the transient change of the generator, thereby having the advantages of low cost, convenient and simple binding, and improvement of the rigidity of the end part of the stator winding and the reliability of the insulation of the stator winding.

Drawings

Fig. 1 is a front view of the generator of the present invention.

Fig. 2 is a partial enlarged view of the stator winding overhang of the present invention.

Fig. 3 is an enlarged cross-sectional view of the stator winding overhang of the present invention.

FIG. 4 is a schematic diagram of the binding of the winding root binding tape of the present invention.

Description of reference numerals: 1. a motor body; 2. a front end cover; 3. a stator winding; 4. a stator; 5. a rotor; 6. a stator core; 7. a rear end cap; 8. winding end fine binding tapes; 9. winding end part coarse fixing belts; 10. binding tapes at the root parts of the windings; 11. stator slot insulating paper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1 to 4, the present invention provides a stator winding end-reinforced generator,

the motor comprises a motor body 1 and a base for protecting the motor body 1, wherein the motor body 1 comprises a rotating shaft, a front end cover 2, a stator 4, a rotor 5 and a rear end cover 7, the front end and the rear end of the rotating shaft are respectively arranged at the front end and the rear end of the base through the front end cover 2 and the rear end cover 7, the rotor 5 is arranged on the rotating shaft and synchronously rotates with the rotating shaft, the stator 4 is arranged on the base and is positioned above the rotor 5, the stator 4 comprises a stator core 6 and a stator winding 3, the stator winding 3 is arranged on the side wall of the stator core 6, a stator winding reinforcing structure is arranged on the stator winding 3 and comprises a winding end fine fixing band 8, a winding end coarse fixing band 9, a winding root binding band 10 and stator slot insulating paper 11, the winding end fine fixing band 8 is arranged at the end of the stator winding 3 far away from the direction end of the stator core 6, a winding end part thick fixing belt 9 is arranged between the stator winding 3 and the winding end part thin fixing belt 8, and the winding root binding belt 10 and the stator slot insulating paper 11 are both arranged at the end of the stator winding 3 close to the stator iron core 6;

the stator winding reinforcing structure binding comprises the following steps:

s1: after the stator winding 3 is well arranged in the stator core 6, a winding end part coarse fixing band 9 is arranged at the position 2/3, which is away from the end surface of the stator core 6, of the end part of the stator winding 3 along the circumferential direction;

s2: then the winding end part thin binding belt is used for tightly binding the winding end part thick fixing belt 9 and the end part of the stator winding 3 together;

s3: the stator slot insulating paper 11 and the stator winding 3 are tightly bound together by a winding root binding belt 10 at the end part of the stator winding 3 close to the end surface of the stator core 6 by adopting an S-shaped binding method;

after the stator winding 3 is well placed in the stator core 6, a circle of thick fixing belt 9 made of polyester sheath glass fiber rope winding end is placed at the position 2/3 from the end surface of the stator core 6 at the end part of the stator winding 3 along the circumferential direction, the thick fixing belt 9 made of polyester sheath glass fiber rope winding end is used for binding the thick fixing belt 9 of the winding end and the end part of the stator winding 3 together, after the stator winding is dried by vacuum pressure dipping insulating paint, the thick fixing belt of the polyester sheath glass fiber rope winding end has great rigidity, because the thick fixing belt 9 of the winding end and the end part of the stator winding 3 are bound together by the thin binding belt of the end part, the rigidity of the stator winding 3 is greatly improved,

the stator slot insulating paper 11 and the stator winding 3 are tightly bound together by the binding belt 10 made of the polyester sheath glass fiber rope winding root part at the end part of the stator winding 3 close to the end surface of the stator core 6 by adopting an S-shaped binding method, so that the stator slot insulating paper 11 is not torn in the shaping process of the end part of the stator winding 3, after the insulating paint is dipped in vacuum pressure, the insulating paint entering the stator core 6 slot is not easy to run off in the processes of dripping the insulating paint and drying and curing, and the insulating quality in the stator core 6 slot is improved,

the present embodiment is implemented as follows: putting stator slot insulating paper 11 in a stator core 6 slot, then putting a straight line part of a stator winding 3 into the stator core 6 slot, selecting a polyester sheathed glass fiber rope with proper thickness as materials of a winding end part thick fixing band 9, a winding end part thin binding band 8 and a winding root binding band 10 according to the power of a generator and the stator winding 3, binding the stator slot insulating paper 11 and the stator winding 3 together by using the winding root binding band 10 at the position of the end part of the stator winding 3 close to the end surface of the stator core 6 by adopting an S-shaped binding method as shown in figure 4, then beating and shaping the end part of the stator winding 3, placing a circle of winding end part thick fixing band 9 at the position of the end part of the stator winding 3 which is about 2/3 away from the end surface of the stator core 6 along the circumferential direction, and then binding the winding end part thick fixing band 9 and the end part of the stator winding 3 together by using the winding end part thin binding band 8, and after all binding is finished, the stator 4 is subjected to vacuum pressure dipping of insulating paint, and then dripping of insulating paint, drying and curing are carried out.

Through the implementation, the rigidity of the end part of the stator winding 3 is improved, the insulation quality of the stator winding 3 is improved, and the damage of electromagnetic force to the insulation of the stator winding 3 due to the vibration of the running of the generator and the transient change of the generator is prevented;

the outer side wall of the machine base is provided with two groups of fixing frames which are convenient for the stability of the operation of the machine base, and the fixing frames are obliquely arranged on the outer side wall of the machine base and are symmetrically arranged along the axis of the machine base;

the outer side wall of the base is provided with radiating fins, the radiating fins are evenly arranged on the outer side wall of the base at intervals, the heat conducting layer can improve the overall heat radiating performance of the base, and the motor can play a role in assisting heat radiation when working in the base, so that the overheating phenomenon of the motor is avoided, and the fault rate of the motor is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.