A generator rotor insulation monitoring brush device

A generator rotor, insulation monitoring technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of device contamination, generator tripping, device stuck, etc., to achieve good current waveform, stable electrical performance, The effect of strong dustproof performance

CN110571983BActive Publication Date: 2021-04-13CNNC FUJIAN FUQING NUCLEAR POWER
10 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-04-13

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A generator rotor insulation monitoring brush device, including a lever device, the lever device is fixed on the casing of the unit through the lever shaft and bearings on both sides, one end of the lever device is slotted into a carbon brush, and the lead wire of the carbon brush passes through the lever device and comes out from the Its lower part is drawn out and finally connected to the aviation plug; the other end of the lever device is connected with an iron core, and the iron core and the lever device are connected flexibly. The iron core passes through the spring and is inserted into the electromagnetic coil. The spring is located between the electromagnetic coil lever device During this period, when the electromagnetic coil is energized, the iron core is subjected to downward electromagnetic attraction, at this time the spring is compressed, the iron core drives the lever device to move downward, and the carbon brush end is lifted.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of electrical control, in particular to a generator rotor insulation monitoring brush device. Background technique

[0002] The rotors of existing large generators mostly use injection-type grounding protection devices, and the insulation resistance value of the rotor windings is measured by using an independent brush-lifting device to regularly lift the brushes to contact with the slip ring shaft. At present, there are few types of brush lifting devices on the market as an important part of the protection device, and the existing types of carbon brushes are all open-type structures, which do not have a dustproof function, and the brush lifting force is relatively small. The brush lifting device is generally installed inside the excitation end of the generator. Due to the complex environment of the industrial site, it has been in a high temperature, dusty, electromagnetic and air-cooled circulating environment for a l...

Examples

Embodiment Construction

[0016] A generator rotor insulation monitoring brush device, including a lever device 4, the lever device 4 is fixed on the unit casing 12 through a lever shaft 2 and bearings 3 on both sides, one end of the lever device 4 is slotted into a carbon brush 1, and the carbon brush is drawn out The wire 13 is passed through the lever device 4 and led out from the lower part thereof, and finally connected to the aviation plug 8 . The other end of the lever device 4 is connected with an iron core 6, and the iron core 6 and the lever device 4 are movably connected. The iron core 6 is inserted into the electromagnetic coil 11 after passing through the spring 7, and the spring 7 is located between the electromagnetic coil 11 and the lever device 4. At the same time, when the iron core 6 after the electromagnetic coil 11 is energized is subjected to the downward electromagnetic attraction force, the spring 7 is compressed, the iron core 6 drives the lever device 4 to move down, and the ca...