CN101227122B - Process for reducing electric machine temperature rise - Google Patents
Process for reducing electric machine temperature rise Download PDFInfo
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- CN101227122B CN101227122B CN200710031625A CN200710031625A CN101227122B CN 101227122 B CN101227122 B CN 101227122B CN 200710031625 A CN200710031625 A CN 200710031625A CN 200710031625 A CN200710031625 A CN 200710031625A CN 101227122 B CN101227122 B CN 101227122B
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- rotor
- temperature rise
- electric machine
- incubated
- temperature
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Abstract
The invention relates to the technical field of a method for processing and reducing increased temperature of a motor, in particular to a technique for reducing the increased temperature of the motor,which comprises an acid cleaning technique for a rotor, namely first heating on the surface of the rotor, the temperature is 65-85 DEG C, preserving heat for 5-15 minutes, second, taking out the rotor, coating the surface of the rotor by 25% phosphoric acid solution, third, washing the surface of the rotor by water, detecting the surface of the rotor, if the adhesion phenomenon exists between therotor sheets, the first and the second steps are repeated, if the adhesion phenomenon exists, the next step is continued, fourth, cleaning spent acid on the surface of the rotor by 5% caustic soda solution, and then washing the surface of the rotor by water, and drying. The invention can clean a large part of corrosion which is adhered by metal on the surface of the rotor through acid cleaning onthe surface of the rotor, a great amount of eddy current can not be generated on the surface of the rotor, therefore, air gap stray loss of the motor of the rotor is also greatly reduced, the increased temperature of a stator is also greatly reduced, and simultaneously other property parameter can not be influenced.
Description
Technical field:
The present invention relates to reduce the method and technology field of electric machine temperature rise, particularly a kind of technology that reduces electric machine temperature rise.
Background technology:
At present, the electromechanics trade situation is better, the batch process that had high input of low pressure middle size motor, and the output of low-pressure high-power motor, high-voltage motor is all higher, but in the process of development high and low pressure middle size motor, runs into the high difficult problem of motor stator temperature rise.Have more leakage flux in the air gap between stator and the rotor, at air gap hour, the whole interlinkages of leakage flux are to rotor surface.During with machine work car rotor airgap, rotor surface has many metal adhesions, and silicon steel sheet thickness is bigger in addition, make air-gap leakage flux induce a large amount of eddy current at rotor surface, thereby produce a large amount of eddy current losses, i.e. the assorted consumption of air gap, thus stator temperature rise is very high when making work.
Summary of the invention:
The objective of the invention is provides a kind of technology that reduces electric machine temperature rise at the deficiencies in the prior art.
For achieving the above object, the present invention adopts following technical scheme:
It comprises the acid cleaning process to rotor,
(1), rotor surface is heated, temperature 65-85 ℃, be incubated 5-15 minute;
(2), take out rotor, phosphoric acid solution brushing rotor surface with 25%;
(3), water flushing rotor surface, the detection rotor surface, if having adhesion between rotor sheet then repeat above-mentioned (1), (2) step, if there is no adhesion then continues next step;
(4), with 5% sodium hydroxide solution rotor washing surface spent acid, wash rotor surface, dry with clear water then.
Before rotor carried out acid cleaning process, remove the antirust paint of rotor surface earlier.
To dry through the rotor that acid cleaning process is handled, temperature 100-130 ℃, be incubated 1-3 hour.
Rotor spray paint with oven dry back exclusion.
When rotor surface was heated, 80 ℃ of preferred temperature were incubated 10 minutes.
When rotor was dried, 120 ℃ of preferred temperature were incubated 2 hours.
Beneficial effect of the present invention is: by the pickling to rotor surface, the most of corrosion of the metal adhesion of rotor surface can be washed, rotor surface just no longer may produce a large amount of eddy current, therefore adopt the assorted consumption of air gap of the motor of this rotor also to be reduced significantly, stator temperature rise also just reduces significantly, simultaneously other performance parameters is not had harmful effect.
Embodiment:
The invention discloses a kind of processing motor rotor to reduce the technology of stator temperature rise, this technology comprises the steps:
It comprises the acid cleaning process to rotor,
(1), rotor surface is heated, temperature 65-85 ℃, be incubated 5-15 minute, temperature is preferably 80 ℃, is incubated 10 minutes;
(2), take out rotor, rotor is placed on the lifting frame, rotary rotor is with 25% phosphoric acid solution brushing rotor surface, 5 minutes time;
(3), water flushing rotor surface, dry the back with magnifying glass detection rotor surface,, up between rotor sheet, do not have adhesion if having adhesion between rotor sheet then repeat above-mentioned (1), (2) step, if there is no adhesion, the clear and legible next step that then continues between rotor sheet;
(4), with 5% sodium hydroxide solution rotor washing surface spent acid, wash rotor surface, dry with clear water then.
Before rotor carried out acid cleaning process, remove the antirust paint of rotor surface earlier, the rotor surface car can be removed certain thickness, also can directly use sand papering.
To place in the baker through the rotor that acid cleaning process is handled and dry, temperature 100-130 ℃, be incubated 1-3 hour; Temperature is preferably 120 ℃, is incubated 2 hours.
With the rotor spray paint of oven dry back exclusion, the rotor that processes can carry out the assembling of motor complete machine.
The present invention is applicable to the open slot rotor and the groove rotor of remaining silent, and can eliminate the adhesion that silicon steel sheet and aluminium bits cause; Since use low concentration phosphoric acid to carry out pickling, therefore not too large to the corrosion of rotor surface, can not change air gap, can not influence performance parameters such as power factor; Neutralize with low concentration alkali solution, can reduce between sheet the seepage acid solution the destruction of lamination insulation.
Through repeatedly experiment showed, through PROCESS FOR TREATMENT of the present invention motor stator temperature rise decline 10-15K.
Claims (4)
1. technology that reduces electric machine temperature rise, it is characterized in that: it comprises the acid cleaning process to rotor,
(1), rotor surface is heated, temperature 65-85 ℃, be incubated 5-15 minute;
(2), take out rotor, phosphoric acid solution brushing rotor surface with 25%;
(3), water flushing rotor surface, the detection rotor surface, if having adhesion between rotor sheet then repeat above-mentioned (1), (2) step, if there is no adhesion then continues next step;
(4), with 5% sodium hydroxide solution rotor washing surface spent acid, wash rotor surface, dry with clear water then;
(5), will dry through the rotor that acid cleaning process is handled, temperature 100-130 ℃, be incubated 1-3 hour;
Wherein, rotor carried out acid cleaning process before, remove the antirust paint of rotor surface earlier.
2. a kind of technology that reduces electric machine temperature rise according to claim 1 is characterized in that: the rotor spray paint that will dry the back exclusion.
3. a kind of technology that reduces electric machine temperature rise according to claim 1 is characterized in that: in the step (1), 80 ℃ of temperature are incubated 10 minutes.
4. a kind of technology that reduces electric machine temperature rise according to claim 1 is characterized in that: when rotor was dried, 120 ℃ of temperature were incubated 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710031625A CN101227122B (en) | 2007-11-23 | 2007-11-23 | Process for reducing electric machine temperature rise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710031625A CN101227122B (en) | 2007-11-23 | 2007-11-23 | Process for reducing electric machine temperature rise |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101227122A CN101227122A (en) | 2008-07-23 |
| CN101227122B true CN101227122B (en) | 2010-05-19 |
Family
ID=39858941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710031625A Expired - Fee Related CN101227122B (en) | 2007-11-23 | 2007-11-23 | Process for reducing electric machine temperature rise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101227122B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343353B (en) * | 2013-07-30 | 2015-12-09 | 中机国际工程设计研究院有限责任公司 | Rotor surface acid-washing burnisher burring machine |
| CN103361659A (en) * | 2013-07-30 | 2013-10-23 | 中机国际工程设计研究院有限责任公司 | Motor rotor surface pickling burring technology |
-
2007
- 2007-11-23 CN CN200710031625A patent/CN101227122B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 三0一研究所.钢铁零件磷化工艺.中华人民共和国第三机械工业部指导性技术文件.1979,1-7. * |
| 方险峰.发电机铁心损伤的分析及处理.华东电力.2000,12-13. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101227122A (en) | 2008-07-23 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20191123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |