CN103095018A - Insulating device of low-speed variable frequency motor for steel rolling - Google Patents
Insulating device of low-speed variable frequency motor for steel rolling Download PDFInfo
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- CN103095018A CN103095018A CN2011103312919A CN201110331291A CN103095018A CN 103095018 A CN103095018 A CN 103095018A CN 2011103312919 A CN2011103312919 A CN 2011103312919A CN 201110331291 A CN201110331291 A CN 201110331291A CN 103095018 A CN103095018 A CN 103095018A
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- variable frequency
- steel rolling
- electromagnetic wire
- motor
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Abstract
The invention provides an alternating current variable frequency speed regulating mechanical equipment motor, in particular to an insulating device of a low-speed variable frequency motor for steel rolling. The insulating device of the low-speed variable frequency motor for steel rolling comprises a motor (1), an electrical wire (2) and a stator iron core (3) fixed on the motor, the electrical wire comprises an electromagnetic wire (21) and an insulating sleeve tube (22) sleeved on the electromagnetic wire (21), one end of the electromagnetic wire (21) provided with the insulating sleeve tube in a sleeved mode is connected with the stator iron core (3), and the other end of the electromagnetic wire (21) provided with the insulating sleeve tube in a sleeved mode is fixedly connected with an outgoing line (4). The insulating device of the low-speed variable frequency motor for steel rolling enhances an insulating structure type of a winding group of an input end of a power supply, is suitable for metallurgy lifting of steel rolling and scattered embedding which is low in rated frequency and is large in power. The insulating device of the low-speed variable frequency motor for steel rolling is ensured to be safe and reliable to use during winding, and low in cost, and has a wide application usage effect.
Description
Technical field
The present invention relates to a kind of in steel rolling process the lower and ac variable frequency speed regulation that overload capacity is large of rated frequency and drive the plant equipment motor, relate in particular to the seal of low-speed variable frequency motor used for steel rolling.
Background technology
Along with the continuous progress of power electronic technology, control theory and computer technology, the ac variable frequency speed regulation motor application is more and more extensive, and has significant advantage than dc speed-regulating motor.And the iron and steel design rolling mill practice of the field basis of metallurgy industry steel rolling at present to live, motor for ultralow rated frequency, because 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, exist DC motor structure complicated, do not have the ac variable frequency speed regulation maintenance of motor convenient, cost is relatively high simultaneously, and mode of speed regulation is only to realize by single variable voltage control, do not have the ac variable frequency speed regulation scope extensively to reach precision high, and be not easy to concentrate the defective such as electrical control.
In line with the superiority that AC frequency conversion is used, so roughing turns the roller-way variable frequency motor that steel is used for steel rolling line, power is large, and is low in rated frequency, guarantee long-term normal the use.Yet common insulation system is to satisfy very large 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 easily punctures the insulation of the winding of termination, thereby burns out motor.High at H500 and following for the electric machine stand center, if adopt the moulding bronze medal to make, cost is higher, and all structures all can not meet the demands.
Summary of the invention
The purpose of this invention is to provide a kind of Cost reduction, improve dielectric strength, satisfy the seal of the possible low-speed variable frequency motor used for steel rolling of insulating protection peak voltage impact.
The objective of the invention is to realize as follows: a kind of seal of low-speed variable frequency motor used for steel rolling, have motor, electric lead and be fixed on stator core on motor, described electric lead comprises electromagnetic wire and the insulating sleeve that is socketed on electromagnetic wire, described cover has electromagnetic wire one end of insulating sleeve to be connected with fixed core, and the other end is fixedly connected with lead-out wire.
Further, described insulating sleeve be internal diameter with a circle and around the acrylic acid heat-resisting sleeve that equates of electromagnetic wire width.
Further, described cover has electromagnetic wire one end of insulating sleeve to extend in stator core to be connected with the electromagnetic wire that is not socketed insulating sleeve, and its built-in length is long half of stator core.
Furtherly, the outer surface of described electric lead has the mica insulation layer.
Advantage of the present invention: strengthen the insulation system pattern of power input winding, be suitable for metallurgical steel rolling lifting etc., rated frequency is lower, the loose embedding that power is larger.Guarantee safe and reliable use in winding, and cost is very low, has and extensively promote the use of effect.
Description of drawings
Content of the present invention is easier to be expressly understood in order to make, and the below is according to instantiation, and the present invention is further detailed explanation by reference to the accompanying drawings, wherein:
Accompanying drawing is structural representation of the present invention.
Embodiment:
see accompanying drawing, a kind of seal of low-speed variable frequency motor used for steel rolling, has motor 1, electric lead 2 and the stator core 3 that is fixed on motor, the outer surface of electric lead 2 has the mica insulation layer, described electric lead 2 comprises electromagnetic wire 21 and the insulating sleeve 22 that is socketed on electromagnetic wire 21, described cover has electromagnetic wire 21 1 ends of insulating sleeve to extend in stator core 3 to be connected with the electromagnetic wire that is not socketed insulating sleeve 22, its built-in length is half of stator core 3 length, the overlapping joining seam of the insulating wrapping of the other end and lead-out wire 4 is 7～9mm approximately, described insulating sleeve 22 be internal diameter with a circle and around the acrylic acid heat-resisting sleeve that equates of electromagnetic wire 21 width.After VPI vacuum pressure varnished insulation paint, 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 rated frequency.
Above-described instantiation; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only instantiation of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. the seal of a low-speed variable frequency motor used for steel rolling has motor (1), electric lead (2) and is fixed on stator core (3) on motor; It is characterized in that: described electric lead (2) comprises electromagnetic wire (21) and is socketed in insulating sleeve (22) on electromagnetic wire (21), described cover has electromagnetic wire (21) one ends of insulating sleeve to be connected with fixed core (3), and the other end is fixedly connected with lead-out wire (4).
2. the seal of low-speed variable frequency motor used for steel rolling according to claim 1 is characterized in that: described insulating sleeve (22) enclose with one for internal diameter and around the acrylic acid heat-resisting sleeve that equates of electromagnetic wire (21) width.
3. the seal of low-speed variable frequency motor used for steel rolling according to claim 2, it is characterized in that: described cover has electromagnetic wire (21) one ends of insulating sleeve to extend in stator core (3) to be connected with the electromagnetic wire that is not socketed insulating sleeve (22), and its built-in length is long half of stator core (3).
4. the seal of low-speed variable frequency motor used for steel rolling according to claim 1, it is characterized in that: the outer surface of described electric lead (2) has the mica insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103312919A CN103095018A (en) | 2011-10-27 | 2011-10-27 | Insulating device of low-speed variable frequency motor for steel rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103312919A CN103095018A (en) | 2011-10-27 | 2011-10-27 | Insulating device of low-speed variable frequency motor for steel rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103095018A true CN103095018A (en) | 2013-05-08 |
Family
ID=48207283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103312919A Pending CN103095018A (en) | 2011-10-27 | 2011-10-27 | Insulating device of low-speed variable frequency motor for steel rolling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103095018A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1135646A (en) * | 1995-05-10 | 1996-11-13 | 三菱电机株式会社 | Insulation lead bushing for power generator |
| CN2376132Y (en) * | 1999-06-19 | 2000-04-26 | 福建仙游闽仙汽车电器有限公司 | Rotor of AC generator for vehicle |
| JP2001061249A (en) * | 1999-08-23 | 2001-03-06 | Toyota Autom Loom Works Ltd | Structure of interphase paper used for rotating system electric apparatus |
| JP2003189523A (en) * | 2001-12-21 | 2003-07-04 | Aisin Aw Co Ltd | Varnish drop impregnation method |
| JP2003244907A (en) * | 2002-02-15 | 2003-08-29 | Nissan Motor Co Ltd | Manufacturing method for motor |
| CN1501570A (en) * | 2002-11-15 | 2004-06-02 | 西北工业大学 | A flat rare-earth permanent-magnetic brushless DC machine |
| CN1505863A (en) * | 2001-04-27 | 2004-06-16 | 株式会社东芝 | Coil for electric rotating machine, and mica tape and mica sheet used for the coil insulation |
| CN101075758A (en) * | 2007-06-15 | 2007-11-21 | 江苏安捷机电技术有限公司 | Insulating system with double-strength, zero-air-gap and corona resistance for electric motor of non-gear permanent-magnetic tractor |
| CN202282665U (en) * | 2011-10-27 | 2012-06-20 | 江苏大中电机股份有限公司 | Insulated device of low-speed variable frequency motor used for steel rolling |
-
2011
- 2011-10-27 CN CN2011103312919A patent/CN103095018A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1135646A (en) * | 1995-05-10 | 1996-11-13 | 三菱电机株式会社 | Insulation lead bushing for power generator |
| CN2376132Y (en) * | 1999-06-19 | 2000-04-26 | 福建仙游闽仙汽车电器有限公司 | Rotor of AC generator for vehicle |
| JP2001061249A (en) * | 1999-08-23 | 2001-03-06 | Toyota Autom Loom Works Ltd | Structure of interphase paper used for rotating system electric apparatus |
| CN1505863A (en) * | 2001-04-27 | 2004-06-16 | 株式会社东芝 | Coil for electric rotating machine, and mica tape and mica sheet used for the coil insulation |
| JP2003189523A (en) * | 2001-12-21 | 2003-07-04 | Aisin Aw Co Ltd | Varnish drop impregnation method |
| JP2003244907A (en) * | 2002-02-15 | 2003-08-29 | Nissan Motor Co Ltd | Manufacturing method for motor |
| CN1501570A (en) * | 2002-11-15 | 2004-06-02 | 西北工业大学 | A flat rare-earth permanent-magnetic brushless DC machine |
| CN101075758A (en) * | 2007-06-15 | 2007-11-21 | 江苏安捷机电技术有限公司 | Insulating system with double-strength, zero-air-gap and corona resistance for electric motor of non-gear permanent-magnetic tractor |
| CN202282665U (en) * | 2011-10-27 | 2012-06-20 | 江苏大中电机股份有限公司 | Insulated device of low-speed variable frequency motor used for steel rolling |
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Application publication date: 20130508 |
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