Corona discharge fault field processing technology for high-voltage motor
A corona discharge and on-site treatment technology, which is applied in the direction of electromechanical devices, manufacturing motor generators, electrical components, etc., can solve problems that affect the orderly production
Inactive Publication Date: 2019-10-11
建龙北满特殊钢有限责任公司
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Problems solved by technology
When such a failure occurs, it can only be sent to a professional maintenance manufacturer for maintenance. The general maintenance time is at least 72 hours, which affects the orderly production
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Embodiment Construction
[0024] Such as figure 1 As shown, the present invention is a kind of on-the-spot treatment process of high-voltage motor corona discharge failure, comprising the following steps:
[0025] Step a: Disassemble the high-voltage motor with a voltage level of 3KV and above, and find the place where white or yellow powder appears on the surface of the motor insulation due to corona, such as image 3 As shown, the place A in the figure is the discharge part, and confirm the length of the discharge part.
[0026] Step b: Use a high-voltage electrified cleaning agent to clean the discharge area to prevent the powder generated by the corona from affecting the application effect of the insulating material in the later stage.
[0027] Step c: Apply the first layer of anti-corona insulating varnish to the cleaned discharge part, which is made by mixing insulating varnish and non-metallic conductor (carbon black, graphite, etc.) powder. Form stable resistance, strong adhesion, and chemica...
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The invention belongs to the technical field of motor insulation, relates to a corona discharge fault field processing technology for a high-voltage motor, and is put forward by aiming at the defect that the maintenance time of an existing high-voltage motor is long when the existing high-voltage motor is subjected to corona discharge faults and is sent to an overhauling factory. The processing technology comprises the following specific steps that: determining a discharge position, cleaning the discharge position, smearing anti-electric insulating paint, binding up a glass silk ribbon, winding a reticular insulating layer, and smearing anti-corona insulating paint and anti-corona coating varnish. The processing technology is simple in operation, has an obvious repairing effect, and can guarantee that the motor reliably and safely operates for a long time after the motor is repaired. Since the discharge position after corona discharge happens is processed in field, overhauling time canbe shortened, overhauling cost can be saved, and therefore, a production process can guarantee to be carried out in order.
Description
Technical field: [0001] The invention belongs to the technical field of motor insulation, and in particular relates to a field treatment process for corona discharge faults of high-voltage motors. Background technique: [0002] For high-voltage motors with a voltage level of 3KV and above, when there are gaps between the winding insulation layers, between the main insulation and the iron core, the distance between the phase lead and the coil is too close, the radius of the coil end bend is small, the charge distribution density is large, and the air is humid, etc. At the same time, under the action of the high-voltage electric field, the air around the electric field is dissociated (ionized) and broken down, forming a continuous chain reaction of "electron avalanche" discharge, and blue fluorescence appears on the insulating surface of the ionization coil, which is the phenomenon of corona discharge. Corona discharge causes chemical reactions in the air to produce ozone and ...
Claims
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IPC IPC(8): H02K15/10H02K15/12
CPCH02K15/105H02K15/12
Inventor 李明孙立臣
Owner 建龙北满特殊钢有限责任公司