CN213072246U

CN213072246U - Hybrid low-harmonic winding and motor

Info

Publication number: CN213072246U
Application number: CN202022246040.8U
Authority: CN
Inventors: 沈惠波
Original assignee: Hangzhou Tsurumi Nanfang Pump Industry Co ltd
Current assignee: Hangzhou Tsurumi Nanfang Pump Industry Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-04-27
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a hybrid low-harmonic winding and a motor, which comprises a stator; a coil wound outside the stator; the stator comprises stator slots, the number of the stator slots is 36 slots, the number of poles is 4, the number of phases is 3, and the number of coils in each pole is 3; u1 is led out from the 32 nd groove, and U2 is led out from the 22 nd groove; w1 is drawn from the 8 th groove, and W2 is drawn from the 34 th groove; v1 is led out from the 2 nd groove, and V2 is led out from the 28 th groove; the coil pitches are 1-10 and 2-9 respectively. The utility model has the advantages that: through the improvement of the coil winding structure in the winding, the torque of the motor is increased, the overload capacity of the motor is greatly enhanced, under the condition that the torque is increased, the motor adopting the winding with the structure cannot be immediately blocked under the conditions of colliding with foreign matters and the like, and the motor with the strengthened overload capacity can continue to work.

Description

Hybrid low-harmonic winding and motor

Technical Field

The utility model relates to a hybrid low harmonic winding and motor belongs to the motor field.

Background

The motor is one of the main parts of the water pump, and the performance of the motor can be operated under complex working conditions. The water pump is wound when the impeller is touched, parts are eccentrically scraped after long-time running, foreign matters are sucked, the rotating speed is reduced, the parts are stuck, and the motor can be burnt seriously. The coil winding of the common motor generally has a cross type, a concentric type or a double-layer winding type, and the Chinese utility model with the publication number of CN202094723U discloses a fractional slot double-winding structure of a servo permanent magnet synchronous motor, which is characterized in that a stator slot is 24 slots, the number of poles is 10, the number of phases is 3, the number of slots of each pole and each phase is the fraction 4/5, the stator winding is designed into two sets of three-phase symmetrical windings, the windings with the same phase in the two sets of windings are connected in series, and the star connection method is led out. The first set of windings is a double-lap winding with unequal turns, each phase has 8 turns, the turn ratio is 1:2:3, the phases have 24 turns, and the pitch is 2. The second set of winding pitch also all is 2, and the turn ratio all is 1 individual layer winding, and every looks 2 circles, 3 looks 6 circles altogether, and each groove filling rate equals in the stator, and this utility model discloses an improvement through the winding structure makes the rated torque of the output of motor obtain improving, nevertheless does not promote the performance of motor under the overload condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hybrid low harmonic winding and motor installs the structure at the interior winding of motor through the improvement, can effectively solve the problem that the performance is not enough to lead to motor stop work under the motor overload condition.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

a hybrid low harmonic winding comprising a stator; a coil wound outside the stator; the stator comprises stator slots, the number of the stator slots is 36 slots, the number of poles is 4, the number of phases is 3, and the number of coils in each pole is 3; u1 is led out from the 32 nd groove, and U2 is led out from the 22 nd groove; w1 is drawn from the 8 th groove, and W2 is drawn from the 34 th groove; v1 is led out from the 2 nd groove, and V2 is led out from the 28 th groove; the coil pitches are 1-10 and 2-9 respectively, and the coil structure can increase the torque of the motor during operation and improve the overload capacity.

Preferably, the winding connection adopts a 2-delta connection mode.

The utility model also provides a motor which is suitable for the winding and comprises a shell; the end cover assembly comprises an upper end cover and a lower end cover which are respectively fixed on two sides of the shell; the winding is connected with a connecting wire set, and one end of the winding is provided with a thermal protector.

Preferably, the upper end cover with be equipped with the threading board between the casing, connecting wire group is including earth connection and output line.

Furthermore, be equipped with two-sided protective coil on the threading board, the earth connection with the output line is followed wear out in the two-sided protective coil, avoids coil wearing and tearing.

In order to transmit torque, a through hole is formed in the lower end cover, one end of the rotating shaft extends out of the through hole, a stopping cavity is formed in the through hole, and a bearing sleeved outside the rotating shaft is arranged in the stopping cavity.

Furthermore, the bottom of bearing is equipped with the stopping packing ring, the top of bearing is equipped with the bearing clamp plate, prevents that the bearing from droing.

Preferably, one side of the lower end cover is provided with an electrode rod, and the electrode rod is fixed on the lower end cover through the electrode gland.

Preferably, O-shaped rubber rings are arranged between the lower end cover and the shell and between the upper end cover and the shell, and the O-shaped sealing rings are used for sealing the gap where the motor is connected, so that the sealing performance of the motor is improved.

Further, the upper end cover is provided with a lifting ring, so that personnel can flexibly adjust the mounting position of the motor through the lifting ring, and the practicability of the motor is improved.

Compared with the prior art, the utility model has the advantages that:

through the improvement of the coil winding structure in the winding, the torque of the motor is increased, the overload capacity of the motor is greatly enhanced, under the condition that the torque is increased, the motor adopting the winding with the structure cannot be immediately blocked under the conditions of colliding with foreign matters and the like, and the motor with the strengthened overload capacity can continue to work.

Drawings

Fig. 1 is a schematic structural diagram of a winding in the present invention;

fig. 2 is a schematic structural diagram of the motor of the present invention;

fig. 3 is a torque test chart of the motor with the winding installed;

in the figure:

10. a winding; 11. a housing; 12. an end cap assembly; 13. an upper end cover; 14. a lower end cover; 15. a rotating shaft; 16. connecting a wire group; 17. a thermal protector; 18. a threading plate; 19. a ground line; 20. an output line; 21. a double-sided protective coil; 22. a through hole; 23. a backstop cavity; 24. a bearing; 25. a backstop washer; 26. a bearing pressure plate; 27. an electrode rod; 28. an electrode gland; 29. an O-shaped rubber ring; 30. a lifting ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, the embodiment of the hybrid low-harmonic winding of the present invention includes a stator, wherein a coil is wound outside the stator, the stator includes stator slots, the number of slots of the stator slots is 36 slots, the number of poles is 4, the number of phases is 3, and the number of coils of each pole is 3; u1 is led out from the 32 nd groove, and U2 is led out from the 22 nd groove; w1 is drawn from the 8 th groove, and W2 is drawn from the 34 th groove; v1 is led out from the 2 nd groove, and V2 is led out from the 28 th groove; the pitches of the coils are 1-10 and 2-9 respectively, the wiring of the winding adopts a 2-delta connection mode, the overload capacity of the motor can be greatly enhanced by the winding structure, the motor cannot be immediately blocked under the conditions of hitting foreign matters and the like after the maximum torque is increased, and the motor with the enhanced overload capacity can still work and cannot be influenced by the halt of the motor.

The utility model provides an embodiment of motor, refer to and draw back, winding 10 in above-mentioned embodiment, the motor includes casing 11 and end cover assembly 12, end cover assembly 12 includes upper end cover 13 and lower end cover 14, fix the upper and lower both sides at casing 11 respectively, be equipped with axis of rotation 15 in casing 11, the outside of axis of rotation 15 is located to winding 10 cover, winding 10 is connected with connection line group 16, and be equipped with heat protector 17 in the one end of winding 10, heat protector 17 can help winding 10 cut off under the overheated condition with be connected with connection line group 16's connection, avoid producing the overheated accident of motor etc., the security and the stability of motor have been increased. The threading plate 18 is arranged between the upper end cover 13 and the shell 11, the connecting wire group 16 comprises a grounding wire 19 and an output wire 20, the threading plate 18 is provided with a double-sided protective coil 21, the grounding wire 19 and the output wire 20 penetrate out of the double-sided protective coil 21 and enter the upper end cover 13, the double-sided protective coil 21 can reduce abrasion of the connecting wire group 16, and the service life of the motor is prolonged.

Referring to the drawing, a through hole 22 is formed in the lower end cover 14, one end of the rotating shaft 15 extends out of the through hole 22, a stopping cavity 23 is formed in the through hole 22, two bearings 24 are sleeved on the rotating shaft 15 in the stopping cavity 23, a stopping washer 25 is arranged at the bottom of each bearing 24, a bearing pressing plate 26 is arranged at the top of each bearing 24, the position of each bearing 24 can be limited by the matching of the stopping washers 25 and the bearing pressing plates 26, the bearings 24 cannot slide out of the stopping cavity 23, and the stable rotation and torque transmission of the rotating shaft 15 are facilitated.

The difference of this embodiment with the above-mentioned embodiment is that, referring to the figure, be equipped with electrode rod 27 in one side of lower end cover 14, electrode rod 27 passes through electrode gland 28 and fixes on lower end cover 14, all is equipped with O type rubber circle 29 in the junction of upper end cover 13, lower end cover 14 and casing 11, and O type rubber circle 29 has increased the leakproofness of motor, has avoided the inside water scheduling problem of motor, has also increased the security, is equipped with rings 30 on upper end cover 13, sets up rings 30 and makes the installation of motor more convenient.

The tested performance of the improved winding is shown in the figure, and the test data can meet the requirement of the current designed working condition operation, and the maximum torque multiple of the improved winding is 3.04 times (380V50Hz), which exceeds the overload capacity of a common conventional motor.

The above description is only for the specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. A hybrid low harmonic winding, characterized by: comprises that

A stator;

a coil wound outside the stator;

the stator comprises stator slots, the number of the stator slots is 36 slots, the number of poles is 4, the number of phases is 3, and the number of coils in each pole is 3; u1 is led out from the 32 nd groove, and U2 is led out from the 22 nd groove; w1 is drawn from the 8 th groove, and W2 is drawn from the 34 th groove; v1 is led out from the 2 nd groove, and V2 is led out from the 28 th groove; the coil pitches are 1-10 and 2-9 respectively.

2. The winding of claim 1, wherein: the winding wiring adopts a 2-delta connection mode.

3. An electrical machine comprising a winding according to any of claims 1-2, characterized in that: comprises that

A housing;

the end cover assembly comprises an upper end cover and a lower end cover which are respectively fixed on two sides of the shell;

the winding is connected with a connecting wire set, and one end of the winding is provided with a thermal protector.

4. The electric machine of claim 3, wherein: the upper end cover with be equipped with the threading board between the casing, connecting wire group is including earth connection and output line.

5. The electric machine of claim 4, wherein: and a double-sided protective coil is arranged on the threading plate, and the grounding wire and the output wire penetrate out of the double-sided protective coil.

6. The electric machine of claim 3, wherein: the bearing is characterized in that a through hole is formed in the lower end cover, one end of the rotating shaft extends out of the through hole, a stopping cavity is formed in the through hole, and a bearing sleeved outside the rotating shaft is arranged in the stopping cavity.

7. The electric machine of claim 6, wherein: the bottom of the bearing is provided with a retaining washer, and the top of the bearing is provided with a bearing pressing plate.

8. The electric machine of claim 3 or 6, wherein: and an electrode rod is arranged on one side of the lower end cover and is fixed on the lower end cover through the electrode gland.

9. The electric machine of claim 3, wherein: o-shaped rubber rings are arranged between the lower end cover and the shell and between the upper end cover and the shell.

10. A machine as claimed in claim 3 or 9, characterized in that: and a lifting ring is arranged on the upper end cover.