CN202282665U - Insulated device of low-speed variable frequency motor used for steel rolling - Google Patents
Insulated device of low-speed variable frequency motor used for steel rolling Download PDFInfo
- Publication number
- CN202282665U CN202282665U CN2011204158514U CN201120415851U CN202282665U CN 202282665 U CN202282665 U CN 202282665U CN 2011204158514 U CN2011204158514 U CN 2011204158514U CN 201120415851 U CN201120415851 U CN 201120415851U CN 202282665 U CN202282665 U CN 202282665U
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- motor
- electromagnetic wire
- steel rolling
- insulating sleeve
- stator core
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Abstract
The utility model provides an AC (Alternating Current) variable frequency speed regulation co-driving mechanical equipment motor having a low rated frequency and a strong overload capability in a steel rolling technology, and especially relates to an insulated device of a low-speed variable frequency motor used for steel rolling. The insulated device comprises a motor (1), an electrical lead (2) and a stator core (3) fixed on the motor; wherein the electrical lead (2) comprises an electromagnetic wire (21) and an insulating sleeve (22) sleeved on the electromagnetic wire (21); and one end of the electromagnetic wire (21) which is sleeved by the insulating sleeve is connected with the stator core (3), the other end of the electromagnetic wire (21) is fixedly connected with a lead-out wire (4). The insulated device of the utility model has the beneficial effects that: by reinforcing an insulated structural style of a power supply input end winding, the variable frequency motor is suitable for metallurgy, steel rolling, lifting and so on, and has a lower rated frequency and a greater scattered power; in addition, the winding can be used safely and reliably, therefore, the insulated device has the advantages of low cost and wide popularization and use effect.
Description
Technical field
The utility model relate to a kind of in steel rolling process the lower and ac variable frequency speed regulation that overload capacity is big of rated frequency and drive the plant equipment motor, relate in particular to the seal of a kind of steel rolling with the low speed variable-frequency motor.
Background technology
Along with the continuous progress of power electronic technology, control theory and computer technology, the ac variable frequency speed regulation motor application more and more widely and has significant advantage than dc speed-regulating motor.And metallurgy industry steel rolling field basis designs rolling mill practice with the iron and steel of living at present, for the motor of ultralow rated frequency, because of machine operation belongs to intermittent duty; Therefore adopting gear reduction box is the rapid wear mechanical part; And adopt traditional dc speed-regulating motor to realize speed regulating control, and exist DC motor structure complicated, there is not the ac variable frequency speed regulation maintenance of motor convenient; Cost is higher relatively simultaneously; And mode of speed regulation only is to lean on single variable voltage control to realize, do not have the ac variable frequency speed regulation scope extensively to reach the precision height, and is not easy to concentrate defective such as electrical control.
In line with the superiority that AC frequency conversion uses, so change the roller-way variable-frequency motor that steel is used for the steel rolling line roughing, power is big, and is low in rated frequency, guarantee long-term normal the use.Yet common insulation system is to satisfy very big dielectric stress; Especially produce when being 0.05 μ s～20 μ s in the rise time at the motor power upstream end and have 0.5KV～15KV; Pulse duration is at 10 μ s～10ms; The winding that impacts the power supply upstream end punctures the insulation of the winding of termination easily, thereby burns out motor.At H500 and following, if adopt the moulding bronze medal to make, cost is higher, and all structures all can not meet the demands for the electric machine stand height of center.
The utility model content
The purpose of the utility model provides a kind of minimizing cost, improves dielectric strength, satisfies the seal of possible a kind of steel rolling of insulating protection peak voltage impact with the low speed variable-frequency motor.
The purpose of the utility model realizes as follows: a kind of steel rolling is with the seal of low speed variable-frequency motor; Have motor, electric lead and be fixed on the stator core on the motor; Said electric lead comprises electromagnetic wire and is socketed in the insulating sleeve on the electromagnetic wire; Said electromagnetic wire one end that is with insulating sleeve is connected with stator core, and the other end is fixedly connected with lead-out wire.
Saying further, described insulating sleeve be internal diameter with a circle and around the heat-resisting sleeve pipe of acrylic acid that equates of electromagnetic wire width.
Saying further, said electromagnetic wire one end that is with insulating sleeve extend in the stator core and is connected with the electromagnetic wire of not socket insulating sleeve, and its built-in length is the half the of stator core length.
Furtherly, the outer surface of said electric lead has the mica insulation layer.
The advantage of the utility model: strengthen the insulation system pattern of power input winding, be suitable for metallurgical steel rolling lifting etc., rated frequency is lower, the diffusing embedding that power is bigger.Guarantee safe and reliable use in the winding, and cost is very low, has and extensively promote the use of effect.
Description of drawings
For content of the present invention is expressly understood more easily, below according to instantiation, and combine accompanying drawing that the present invention is done further detailed explanation, wherein:
Accompanying drawing is the structural representation of the utility model.
Embodiment:
See accompanying drawing; A kind of steel rolling is with the seal of low speed variable-frequency motor; Have motor 1, electric lead 2 and be fixed on the stator core 3 on the motor, the outer surface of electric lead 2 has the mica insulation layer, and said electric lead 2 comprises electromagnetic wire 21 and is socketed in the insulating sleeve 22 on the electromagnetic wire 21; Said electromagnetic wire 21 1 ends that are with insulating sleeve extend in the stator core 3 and are connected with the electromagnetic wire of not socket insulating sleeve 22; Its built-in length is long half the of stator core 3, and the about 7～9mm of overlapping joining seam is wrapped up in the insulation of the other end and lead-out wire 4, described insulating sleeve 22 be internal diameter enclose with one and around the heat-resisting sleeve pipe of acrylic acid that equates of electromagnetic wire 21 width.Behind VPI vacuum pressure varnished insulation lacquer, guaranteed low-pressure high-power through inverter supply, the optimum efficiency that does not puncture hanging down the peak voltage dielectric stress pulse of long-term work under the rated frequency.
Above-described instantiation; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the instantiation of the utility model; Be not limited to the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a steel rolling has motor (1), electric lead (2) and is fixed on the stator core (3) on the motor with the seal of low speed variable-frequency motor; It is characterized in that: said electric lead (2) comprises electromagnetic wire (21) and is socketed in the insulating sleeve (22) on the electromagnetic wire (21); Said electromagnetic wire (21) one ends that are with insulating sleeve are connected with stator core (3), and the other end is fixedly connected with lead-out wire (4).
2. according to the seal of the said a kind of steel rolling of claim 1, it is characterized in that with the low speed variable-frequency motor: described insulating sleeve (22) enclose with one for internal diameter and around the heat-resisting sleeve pipe of acrylic acid that equates of electromagnetic wire (21) width.
3. according to the seal of the said a kind of steel rolling of claim 2 with the low speed variable-frequency motor; It is characterized in that: said electromagnetic wire (21) one ends that are with insulating sleeve extend in the stator core (3) and are connected with the electromagnetic wire of not socket insulating sleeve (22), and its built-in length is the half the of stator core (3) length.
4. according to the seal of the said a kind of steel rolling of claim 1 with the low speed variable-frequency motor, it is characterized in that: the outer surface of said electric lead (2) has the mica insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204158514U CN202282665U (en) | 2011-10-27 | 2011-10-27 | Insulated device of low-speed variable frequency motor used for steel rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204158514U CN202282665U (en) | 2011-10-27 | 2011-10-27 | Insulated device of low-speed variable frequency motor used for steel rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202282665U true CN202282665U (en) | 2012-06-20 |
Family
ID=46228816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204158514U Expired - Lifetime CN202282665U (en) | 2011-10-27 | 2011-10-27 | Insulated device of low-speed variable frequency motor used for steel rolling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202282665U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095018A (en) * | 2011-10-27 | 2013-05-08 | 江苏大中电机股份有限公司 | Insulating device of low-speed variable frequency motor for steel rolling |
-
2011
- 2011-10-27 CN CN2011204158514U patent/CN202282665U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095018A (en) * | 2011-10-27 | 2013-05-08 | 江苏大中电机股份有限公司 | Insulating device of low-speed variable frequency motor for steel rolling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120620 |