CN112542925A - Method for dismantling motor winding - Google Patents
Method for dismantling motor winding Download PDFInfo
- Publication number
- CN112542925A CN112542925A CN202110028839.6A CN202110028839A CN112542925A CN 112542925 A CN112542925 A CN 112542925A CN 202110028839 A CN202110028839 A CN 202110028839A CN 112542925 A CN112542925 A CN 112542925A
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- China
- Prior art keywords
- winding
- motor
- welding machine
- series
- motor winding
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Links
- 238000004804 winding Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000004939 coking Methods 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002367 phosphate rock Substances 0.000 description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0006—Disassembling, repairing or modifying dynamo-electric machines
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a method for dismantling a motor winding, which mainly comprises the following steps: step one, motor winding wiring: according to the damage condition of the motor, coils needing to be removed are connected in series, and two ends of the coils are respectively connected with the positive pole and the negative pole of a welding machine wiring pile; step two, electrifying the coking winding: the load capacity of the welding machine is required to be larger than the load after the windings are connected in series, the required current is different according to the resistance condition after the windings are connected in series, the current of the welding machine is adjusted to a proper position, the power supply is switched on, the current passes through the motor winding, the coil or the coil group generates heat in the wire slot of the motor winding, and the insulation coking is carried out for 1 to 2 minutes; thirdly, dismantling the winding: and selecting any end of the coked winding for cutting off, and then easily withdrawing the winding through an iron rod. The method of the invention can effectively remove the motor winding without damaging the motor silicon steel sheet; the motor is fast to dismantle, efficient, with low costs.
Description
Technical Field
The invention relates to chemical mine electrical equipment, in particular to a method for dismantling a motor winding.
Background
A high-performance synchronous motor comprises: the power factor is high, the volume is small, the power density is large, the starting torque is large, the noise is small, the temperature rise is low, the reliability is high, and the like, and the power factor is widely applied to the industries of metallurgy, chemical engineering and the like. The high-performance synchronous motor is configured in ball milling and flotation equipment of the Van-Fu phosphorite concentrating mill and serves as main auxiliary equipment of the concentrating mill, and plays an important role in guaranteeing normal production and operation activities of the Van-Fu phosphorite. According to the past, the synchronous motor is out of order to be repaired. The maintenance cost of the motor (especially the motor above 11 KV) which is sent to the outside for maintenance is higher, and the service life is short. The reasons for this are that the outsourcing maintenance process adopts high-temperature and firing treatment, which results in serious demagnetization of the motor silicon steel sheet and poor heat dissipation effect; the problem of too fast temperature rise generally exists when the motor which is sent for repair runs under the condition of the same load, the motor which is just replaced and put into use fails for a long time, and the influence on the production of a concentrating mill is large. In order to overcome the problem, the inventor invents a method and a device which can effectively remove the motor winding without damaging the silicon steel sheet of the motor.
And no report of relevant contents exists after retrieval.
Disclosure of Invention
The invention aims to solve the technical problems of difficult motor winding dismantling, easy damage of silicon steel sheets and the like, and by using the method, the motor winding can be dismantled easily only by heating and coking the motor winding under the condition that the motor silicon steel sheets are not directly heated, and the most important point is that the degree of demagnetization of the silicon steel sheets can be greatly reduced.
In order to achieve the purpose, the technical scheme of the invention is as follows:
according to the principle that the lower the resistance value is, the easier the current passes through the conductor, the condition that the resistance value of the winding coil is far lower than that of the iron core resistor is utilized: under the action of low voltage and large current, the coil quickly heats, insulating paint is coked, the whole volume of the winding becomes small, and the motor winding is favorably dismantled.
The method comprises the following specific implementation steps:
step one, motor winding wiring: according to the damage condition of the motor, the coils to be removed are connected in series, and two ends of the coils are respectively connected with the anode and the cathode of the welding machine wiring pile.
Step two, electrifying the coking winding: the load capacity of the welding machine is required to be larger than the load after the windings are connected in series, the required current is different according to the resistance condition after the windings are connected in series, the current of the welding machine is adjusted to a proper position, the power supply is closed, the current passes through the motor winding, the coil or the coil group generates heat in the wire slot of the motor winding, and the insulation coking is carried out for 1 to 2 minutes.
Thirdly, dismantling the winding: and selecting any end of the coked winding for cutting off, and then easily withdrawing the winding through an iron rod.
The invention has the following advantages: (1) the motor is fast to dismantle and high in efficiency; (2) the quality is guaranteed: the performance of the motor is unchanged; (3) the cost is low.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: a is a total air switch, b is an alternating current welding machine; c is a development diagram of a three-phase motor iron core winding, L1 and L2 are live wires, and the voltage between two phases is 380V; k is open; x1 and X2 are air-break lower connectors; y1 and y2 are lines; x3 and X5 are power connectors of the welding machine, and the voltage is 380V; x4 is a welder power tap, voltage 220V; h is a crank; g is a movable iron core; q is an air gap; x6 and X7 are load winding joints; m1, m2 weld line; m1, M2 weld wire joints; a 'and a' are the head and the tail of the coil group.
Detailed Description
Example (b):
the method of the invention has obvious effect when used in certain phosphorite concentrating mill, and is considered to be popularized and applied in the range of group companies.
The method comprises the following specific implementation steps:
step one, motor winding wiring: according to the damage condition of the motor, the coils to be removed are connected in series, and two ends of the coils are respectively connected with the anode and the cathode of the welding machine wiring pile.
Step two, electrifying the coking winding: the load capacity of the welding machine is required to be larger than the load after the windings are connected in series, the required current is different according to the resistance condition after the windings are connected in series, the current of the welding machine is adjusted to a proper position, the power supply is closed, the current passes through the motor winding, the coil or the coil group generates heat in the wire slot of the motor winding, and the insulation coking is carried out for 1 to 2 minutes.
Thirdly, dismantling the winding: and selecting any end of the coked winding for cutting off, and then easily withdrawing the winding through an iron rod.
Claims (1)
1. A method for dismantling a motor winding is characterized in that: the method mainly comprises the following steps:
step one, motor winding wiring: according to the damage condition of the motor, coils needing to be removed are connected in series, and two ends of the coils are respectively connected with the positive pole and the negative pole of a welding machine wiring pile;
step two, electrifying the coking winding: the load capacity of the welding machine is required to be larger than the load after the windings are connected in series, the required current is different according to the resistance condition after the windings are connected in series, the current of the welding machine is adjusted to a proper position, the power supply is switched on, the current passes through the motor winding, the coil or the coil group generates heat in the wire slot of the motor winding, and the insulation coking is carried out for 1 to 2 minutes;
thirdly, dismantling the winding: and selecting any end of the coked winding for cutting off, and then easily withdrawing the winding through an iron rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110028839.6A CN112542925A (en) | 2021-01-11 | 2021-01-11 | Method for dismantling motor winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110028839.6A CN112542925A (en) | 2021-01-11 | 2021-01-11 | Method for dismantling motor winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112542925A true CN112542925A (en) | 2021-03-23 |
Family
ID=75017273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110028839.6A Pending CN112542925A (en) | 2021-01-11 | 2021-01-11 | Method for dismantling motor winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112542925A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2369398Y (en) * | 1999-03-16 | 2000-03-15 | 石油大学(华东) | Twin coil series connecting energy saving motor |
| CN102324734A (en) * | 2011-09-14 | 2012-01-18 | 埃美圣龙(宁波)机械有限公司 | Default phase protecting method and device for three-phase motor |
| CN108964368A (en) * | 2018-07-17 | 2018-12-07 | 张凉英 | A kind of electrical-coil cutter device |
| CN110190715A (en) * | 2019-06-04 | 2019-08-30 | 浙江江宇电机有限公司 | The not damaged device and stator winding method for dismounting for removing motor stator winding |
-
2021
- 2021-01-11 CN CN202110028839.6A patent/CN112542925A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2369398Y (en) * | 1999-03-16 | 2000-03-15 | 石油大学(华东) | Twin coil series connecting energy saving motor |
| CN102324734A (en) * | 2011-09-14 | 2012-01-18 | 埃美圣龙(宁波)机械有限公司 | Default phase protecting method and device for three-phase motor |
| CN108964368A (en) * | 2018-07-17 | 2018-12-07 | 张凉英 | A kind of electrical-coil cutter device |
| CN110190715A (en) * | 2019-06-04 | 2019-08-30 | 浙江江宇电机有限公司 | The not damaged device and stator winding method for dismounting for removing motor stator winding |
Non-Patent Citations (1)
| Title |
|---|
| 关健，李欣雪: "电力电子技术", 北京理工大学, pages: 96 * |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210323 |