CN2627716Y

CN2627716Y - High-voltage machine winding with reinforced crossover block

Info

Publication number: CN2627716Y
Application number: CN 03245967
Authority: CN
Inventors: 周英霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-12
Filing date: 2003-06-12
Publication date: 2004-07-21
Anticipated expiration: 2013-06-12

Abstract

The utility model relates to a high-tension motor winding with a reinforced crossover block. The high-tension motor winding consisting of an iron core, a steel hoop and coils is characterized in that a reinforced crossover block is inserted into the straight part of the coil adjacent to the rabbet at the end of the motor winding, the sloping part adjacent to the end of the motor winding, and the lower part of the winding steel hoop, wherein the crossover block is distributed at each part in the shape of circumference and the outside of the reinforced crossover block is covered with a layer of polyester blanket. In the motor winding, the crossover block is inserted among the adjacent coils, being able to ensure a uniform clearance among the coils of the motor winding, and meanwhile eliminating the clearance discrepancy to forbid the discharge phenomena between adjacent coils and increase the insulating property of the coils. In addition, because the motor is processed by dipping lacquer, the crossover block and the inside of the housing polyester blanket is filled with insulated paint to connect the adjacent coils of the whole motor all together. As a result, a complete round whole body is formed, therefore greatly improving the wholeness of the motor winding end.

Description

Have the high-voltage motor winding of reinforcing cross-over block

Technical field:

The utility model belongs to technical field of motors, is a kind of high-voltage motor winding of reinforcing cross-over block that has.

Background technology:

The winding of motor is the heart of motor, and the weakest link of winding is the end of winding, in existing technology, electric motor winding end does not have stiffener, its structure is the round steel in an outsourcing insulation of the outer cover of electric motor winding end, every coil of winding is tied up on round steel, causes the gap between the adjacent windings inhomogeneous.And to bear different power because of motor windings during machine operation, as: the power that vibration produces, centrifugal force that the magnetic pull that brow leakage produces, the uneven unilateral magnetic force that produces of air gap, rotor rotation produce and other external force etc., these power lump together and cause electric motor winding end to fall apart easily, thereby the useful life of having reduced motor, increased the anti-revisionist rate of motor.Next is that the voltage between phases of high-voltage motor adjacent windings is than the voltage height of motor own, motor will bear atmospheric over-voltage, power network overvoltage when work, if the gap between the insulation processing difference of coil own or the adjacent windings is inhomogeneous, coil will be discharged mutually and will puncture.In addition, because the winding of motor always covers by electromagnetic field, thereby make winding stressed because of the effect of electromagnetism, especially in the motor more than the Ikv level, the centrifugal force that electromagnetic force and rotor are produced is quite big, almost has nearly hundred tons power to produce.As the power that the motor harmonic wave is produced, the centrifugal force during the rotor rotation all is a kind of destructive power, and it can make motor produce vibration and tear the winding of motor, causes motor to be burnt.The value of a large-size machine is hundreds of thousands unit at least, ten million yuan at most, will cause great economic loss to the user.

Summary of the invention:

The purpose of this utility model provides a kind of globality, insulating properties that can improve motor windings, and can avoid effectively that motor windings is fallen apart, coil discharge and motor are burnt has the high-voltage motor winding of reinforcing collets.

Realize that the technical scheme that the purpose of this utility model is taked is: this high-voltage motor winding is made up of iron stamen, stirrup, coil, its principal character is: go out at electric motor winding end that the position is inserted with the reinforcing cross-over block under the adjacent oblique line position of straight line position, electric motor winding end of notch adjacent windings and the winding stirrup, this cross-over block is the circle distribution shape at each position, is surrounded by one deck polyester felt in the outside that reinforces cross-over block.

Have a high-voltage motor winding of reinforcing cross-over block according to what such scheme was made, because cross-over block is inserted between the adjacent windings, the gap that can guarantee whole machine winding coil is even, eliminated the gap deviation simultaneously, make adjacent windings electric discharge phenomena can not occur, and strengthened the insulation property of coil.And the reinforcing cross-over block that increases, because of motor through dipping lacquer, make the solid insulating varnish of polyester felt of cross-over block and outsourcing, the coil of adjacent whole motor is all linked together, form a complete circular integral body, improved the globality of electric motor winding end greatly.

Utilize accompanying drawing to further describe embodiment of the present utility model below.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of rectangle cross-over block;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the structural representation of oblique cross-over block;

Fig. 5 is the left view of Fig. 4.

Embodiment:

Referring to Fig. 1, the high-voltage motor winding of reinforcing cross-over block that has of the present utility model is made up of iron stamen 1, stirrup 2, coil 3, go out under the adjacent oblique line position of straight line position, electric motor winding end of notch adjacent windings and the winding stirrup position is inserted with and reinforces cross-over block 4 at electric motor winding end, this cross-over block is the circle distribution shape at each position, is surrounded by one deck polyester felt in the outside that reinforces cross-over block 4.It is the stressed strong point of end winding that electric motor winding end goes out the notch place, and the power maximum of bearing is set up herein and reinforced cross-over block 4, can prevent about coil 3 stressed backs, swing up and down.To be not so good as out notch big though the end of winding is stressed, because of coil 3 ends longer, long apart from going out the notch place arm of force, for preventing coil 3 swings, set up reinforcing cross-over block 4 at the adjacent oblique line position of winding overhang and the bottom of winding stirrup 2, effect is better.Reinforcing cross-over block 4 is to be bonded with resin cement by glass fibre or quartz sand, is reinforcing cross-over block 4 outsourcing one deck polyester felt, insertion motor end adjacent windings.When motor adopts the vacuum pressed dipping lacquer, insulating varnish is pressed in polyester felt and the cushion block, after motor is dried, insulating varnish is set in the cushion block of band polyester felt, the adjacent coil of motor is cured in together simultaneously, make motor windings form a complete circular integral body, thereby improved the globality of winding, and strengthened the mutual insulating properties of coil.

Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, motor side partly is two-layer up and down, and the space is comparatively complicated.For satisfying the space of motor windings complexity, reinforce cross-over block 4 and can be arranged to difformities such as rectangle, oblique, polygon, taper, cylindricality, circle or ellipse as required, in this case, mainly enumerated the shape of rectangle, oblique two kinds of cross-over blocks, wherein, rectangle cross-over block 4-1 mainly is installed between the adjacent windings of motor end, and this kind shape assurance cushion block inserts and inserts the back easily and can not come off by the adjacent windings clamping; This rectangle cross-over block 4-1 also is suitable for end winding and goes out the notch place.Oblique cross-over block 4-2 mainly is used in the motor end and goes out the notch place, and this cushion block is inwardly to insert smoothly from the outside, is subjected to the restriction of cushion block major part after cushion block inserts, and can not slip into the winding inner chamber.

Claims

1, a kind of high-voltage motor winding of reinforcing cross-over block that has, form by iron stamen [1], stirrup [2], coil [3], be primarily characterized in that: go out under the adjacent oblique line position of straight line position, electric motor winding end of notch adjacent windings and the winding stirrup position at electric motor winding end and be inserted with and reinforce cross-over block [4], this cross-over block is the circle distribution shape at each position.

2, the high-voltage motor winding of reinforcing cross-over block that has according to claim 1 is characterized in that: the outside that reinforces cross-over block [4] is surrounded by one deck polyester felt.

3, the high-voltage motor winding of reinforcing cross-over block that has according to claim 1 is characterized in that: reinforce cross-over block [4] and can be arranged to rectangle, oblique, polygon, taper, cylindricality, circle or oval in shape.

4, the high-voltage motor winding of reinforcing cross-over block that has according to claim 1 is characterized in that: reinforce cross-over block [4] and be bonded by glass fibre or quartz sand and resin cement.