CN211701792U

CN211701792U - Dehumidification protection device for improving insulation performance of motor

Info

Publication number: CN211701792U
Application number: CN202020394916.0U
Authority: CN
Inventors: 徐先宝; 聂成元; 晁晓红; 张加龙; 郑时龙; 吴锋; 李庆华
Original assignee: Shaanxi Changqing Energy & Chemical Co ltd
Current assignee: Shaanxi Changqing Energy & Chemical Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-10-16
Anticipated expiration: 2030-03-25

Abstract

The utility model discloses a dehumidification protection device for improving the insulation performance of a motor, which relates to the technical field of motor protection devices and comprises a stator core, wherein the stator core is provided with a motor drive winding end part, the motor drive winding end part comprises a first winding coil and a second winding coil, and the first winding coil and the second winding coil are respectively arranged at two ends of the stator core simultaneously, the utility model can block the invasion of moisture to the motor winding by additionally arranging a heating belt on the motor, thereby achieving the aim of dehumidification and damp resistance of the motor, effectively solving the problems of insulation reduction and insulation aging of the inner winding of the motor, having the advantages of high speed, high efficiency and accuracy compared with the traditional electric heater, and simultaneously, not damaging the motor winding coil in an electric hair drier way, the service life of the winding coil of the motor is prolonged.

Description

Dehumidification protection device for improving insulation performance of motor

Technical Field

The utility model belongs to the technical field of motor protection device, concretely relates to improve motor insulating property's dehumidification protection device.

Background

Most of motors have severe operating environment, much dust and moisture, most of the motors are exposed outdoors, and no rainproof measures are taken. Firstly, in a humid environment, when the motor stops working, external rainwater and moisture easily enter the motor, so that the insulation performance of the motor is reduced. Secondly, the stator winding of the motor is loosened in the iron core due to the effect of long-time vibration and centrifugal force, the abrasion of the bent part is aggravated, the stator winding is heated, then the insulation of the motor is aged, and the insulation is reduced. In addition, the accumulation of heat generated by long-time operation of the motor and the aging of a self heat dissipation system and the high temperature of the external environment lead to the insulation softening and deformation of a motor winding, possibly lead to partial discharge at partial positions and cause more serious conditions such as phase-to-phase short circuit and the like. The resulting frequent changes in the operating regime can cause the motor windings to experience over-currents causing the insulation to age more quickly.

At present, most of the moisture-proof measures of the motors use electric heaters which are generally positioned right below the motors. The air in the internal cavity of the motor is heated to a temperature higher than the external environment by proper degrees mainly by means of the convection heat transfer of the air.

Different sizes and types of motors require different electric heater powers. The difference in total power directly affects the physical size and heating capacity of the electric heater of the electric heating element. If the total power is selected too much, the air in the motor is heated too fast, and a certain local part of the motor easily reaches dangerous temperature, so that surrounding explosive gas can be ignited to cause explosion accidents, and the loss of insulating materials and other aspects is easily caused; the total power selection is too small, the heating effect is poor, the heating speed of the air in the motor is slow, and even the air cannot meet the specified requirements when the external environment temperature is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve motor insulating property's dehumidification protection device to solve the problem that proposes in the above-mentioned background art, can solve the insulating reduction of the inside winding of motor effectively, it is insulating ageing, have fast, efficient, accurate effect that reaches and want.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an improve motor insulating properties's dehumidification protection device, includes stator core, the last motor drive winding head portion that is provided with of stator core, motor drive winding head portion includes first winding coil and second winding coil, simultaneously first winding coil and second winding coil are located stator core's both ends respectively, wherein the outer wall of first winding coil is around being equipped with first heating tape, and just the both ends of first heating tape all are fixed with first connector, simultaneously the one end of first heating tape is connected with two first polyester bandages, the outer wall of second winding coil is around being equipped with the second heating tape, and the both ends of second heating tape all install the second connector, simultaneously the one end of second heating tape still is connected with two second polyester bandages.

Preferably, two ends of the first heating belt are connected through a first connecting head to form a first heating belt ring.

Preferably, the two ends of the second heating belt are connected through a second connector to form a second heating belt ring.

Preferably, a through hole is formed in the stator core, and the through hole is matched with a rotor of the motor.

Preferably, the first heating belt is bound and fixed with the first winding coil through two first polyester binding bands.

Preferably, the second heating belt is bound and fixed with the second winding coil through two second polyester binding belts.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses an install the heating band additional for the motor, pass to the motor winding with the heating band temperature, make the winding temperature be higher than ambient temperature 5K to block the infringement of moisture to the motor winding, reach the damp-proofing purpose of motor dehumidification.

(2) The utility model discloses can solve the insulating reduction of motor inside winding effectively, it is insulating ageing, compare in traditional electric heater mode have fast, efficient, accurate effect that reaches and want, compare simultaneously in hairdryer formula harmlessness motor winding coil, help prolonging the life of motor winding coil.

Drawings

FIG. 1 is a schematic view of the heating belt of the present invention during binding;

FIG. 2 is a schematic structural view of the heating belt of the present invention after the binding process;

FIG. 3 is a schematic diagram of the electrical wiring of the heating belt of the present invention;

in the figure: 1-a stator core; 2-motor drive winding end; 21-a first winding coil; 22-a second winding coil; 3-a first heating zone; 4-a first connector; 5-a first polyester strap; 6-a second heating zone; 7-a second polyester band; 8-a second connector; 9-through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a dehumidification protection device for improving the insulation performance of a motor comprises a stator core 1, a motor driving winding end part 2 is arranged on the stator core 1, the motor driving winding end part 2 comprises a first winding coil 21 and a second winding coil 22, and the first winding coil 21 and the second winding coil 22 are respectively positioned at two ends of the stator core 1, wherein a first heating belt 3 is wound on the outer wall of the first winding coil 21, first connecting heads 4 are fixed at two ends of the first heating belt 3, two ends of the first heating belt 3 are connected through the first connecting heads 4 to form a first heating belt ring, the first heating belt 3 is fixedly bound with the first winding coil 21 through two first polyester binding belts 5 so as to heat the first winding coil 21, meanwhile, one end of the first heating belt 3 is connected with the two first polyester binding belts 5, a second heating belt 6 is wound on the outer wall of the second winding coil 22, the two ends of the second heating belt 6 are respectively provided with a second connector 8, one end of the second heating belt 6 is connected with two second polyester binding bands 7, the two ends of the second heating belt 6 are connected through the second connectors 8 to form a second heating belt ring, the second heating belt 6 is bound and fixed with a second winding coil 22 through the two second polyester binding bands 7 so as to heat the second winding coil 22, a penetrating through hole 9 is formed in the stator core 1, the through hole 9 is matched with a rotor of a motor so as to facilitate installation between the rotor of the motor and the stator core 1, and the first heating belt 3 and the second heating belt 6 form an electric heating belt so as to heat the end part 2 of a motor driving winding;

in addition, this embodiment still can adopt single heating band, when using, only need single heating band install in the drive winding tip of motor can to the realization carries out electrical heating to the drive winding tip of motor, reaches the dampproofing effect of dehumidification.

Referring to fig. 3, it is an electrical schematic diagram between the heating belt and the motor operation, wherein SB1 is a normally open switch, SB2 is a normally closed switch, K is an ac contactor, and R denotes the heating belt;

specifically, the method comprises the following steps: when SB1 is pressed: the coil K is electrified, the normally open switch K of the self-locking switch SB1 is closed, the normally closed switch K is disconnected, the heating belt stops working, meanwhile, the main switch K of the motor is closed, and the motor starts to operate; when SB2 is pressed: the K coil loses electricity, the motor master switch K is disconnected, the motor stops running, the heating belt normally-closed switch K is closed, the heating belt starts to work, and the SB1 self-locking normally-open switch K is disconnected. The interlocking of the motor and the electric heating belt on the working mode is realized logically.

The utility model discloses a theory of operation and use flow: when the utility model is used, a user can respectively wind the first heating belt 3 and the second heating belt 6 on the outer wall of the first winding coil 21 and the second winding coil 22, the end parts of the first heating belt 3 and the second heating belt 6 are respectively connected through the first connector 4 and the second connector 8, then the first heating belt 3 and the second heating belt 6 are respectively bound and fixed with the first winding coil 21 and the second winding coil 22 through the first polyester bandage 5 and the second polyester bandage 7, thereby the heating belt is bound on the outer wall of the motor-driven winding end part 2, then the user installs the stator core 1 in the motor, and the first heating belt 3 and the second heating belt 6 are connected with the junction box of the motor through wires to form a circuit, when the motor stops running, the first heating belt 3 and the second heating belt 6 are electrified to respectively heat the first winding coil 21 and the second winding coil 22, make the temperature of first winding coil 21 and second winding coil 22 be higher than ambient temperature 5K to can realize blocking the infringement of moisture to motor winding, reach the damp-proofing purpose of dehumidification, and then help the life of extension motor, when the motor operation,

first heating band

3 and 6 stop heating of second heating band, the effectual motor temperature that prevents is too high.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an improve motor insulating properties's dehumidification protection device which characterized in that: comprises a stator core (1), a motor driving winding end part (2) is arranged on the stator core (1), the motor drive winding head (2) comprises a first winding coil (21) and a second winding coil (22), meanwhile, the first winding coil (21) and the second winding coil (22) are respectively positioned at two ends of the stator core (1), wherein the outer wall of the first winding coil (21) is wound with a first heating belt (3), and both ends of the first heating belt (3) are fixed with first connectors (4), meanwhile, one end of the first heating belt (3) is connected with two first polyester binding bands (5), a second heating belt (6) is wound on the outer wall of the second winding coil (22), and both ends of the second heating belt (6) are provided with second connectors (8), and simultaneously, one end of the second heating belt (6) is connected with two second polyester binding belts (7).

2. A dehumidification protection device for improving the insulation performance of a motor according to claim 1, wherein: the two ends of the first heating belt (3) are connected through a first connector (4) to form a first heating belt ring.

3. A dehumidification protection device for improving the insulation performance of a motor according to claim 1, wherein: the two ends of the second heating belt (6) are connected through a second connector (8) to form a second heating belt ring.

4. A dehumidification protection device for improving the insulation performance of a motor according to claim 1, wherein: the stator core (1) is internally provided with a through hole (9) which penetrates through the stator core, and the through hole (9) is matched with a rotor of the motor.

5. A dehumidification protection device for improving the insulation performance of a motor according to claim 1, wherein: the first heating belt (3) is bound and fixed with the first winding coil (21) through two first polyester binding bands (5).

6. A dehumidification protection device for improving the insulation performance of a motor according to claim 1, wherein: the second heating belt (6) is bound and fixed with the second winding coil (22) through two second polyester binding bands (7).