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Generator carbon brush on-line automatic constant voltage regulation and sweeping device

A technology of constant voltage regulation and constant voltage device, applied in the field of electric power, can solve problems such as hidden dangers of stable operation of equipment, increased contact pressure drop, and unstable contact, and achieve the effect of ensuring stable operation of equipment, consistent force, and convenient operation

Active Publication Date: 2016-11-23
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical application, it is found that although the brush holder is a constant pressure, the pressure of each spring is different. Pulling the brush holder spring by hand can obviously feel the pressure difference of different springs, and with the extension of running time, spring fatigue will still occur. In the process of shortening the carbon brushes, the spring pressure will also decrease to varying degrees. The pressure decreases to a certain extent, the contact is unstable, the contact pressure drop increases, and the current between the carbon brushes is redistributed. When the ambient temperature rises Or when the excitation current increases, it can cause heat at any time, causing balance damage, and bringing great hidden dangers to the stable operation of the equipment

Method used

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  • Generator carbon brush on-line automatic constant voltage regulation and sweeping device
  • Generator carbon brush on-line automatic constant voltage regulation and sweeping device
  • Generator carbon brush on-line automatic constant voltage regulation and sweeping device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 : see figure 1 , figure 2 , as an improvement of the present invention, the automatic constant pressure adjustment and purging device includes a constant pressure device, a generator rotor 23, a carbon brush 9, a slip ring 8, a constant pressure device bracket 20, and a carbon brush bracket 19, the The slip ring 8 is rigidly connected to the generator rotor 23, the carbon brush 9 is in contact with the slip ring 8 under the fixation of the carbon brush bracket 19 and the brush holder 22, the constant voltage device 21 is fixed on the constant voltage device bracket 20, The constant pressure device includes a pneumatic propulsion device, a regulating device and a pressure regulator. The regulating device includes a pressure controller, a pressure regulating valve and a carbon brush pressure sensing element. To cool the purge assembly, the first path adjustment assembly includes a cut-off solenoid valve 17 and a pressure regulation valve 18, and the cut-off...

Embodiment 2

[0029] Example 2 : see figure 1 , figure 2 , as an improvement of the present invention, the pneumatic propulsion device 16 includes a pressure sensitive element 10, a push insulator 11, a compression spring 12, a sliding piston 13, a sliding notch 14, a stopper 15, and the sliding notch 14 The number is two groups, which are arranged on the upper and lower inner walls of the cylinder body of the pneumatic propulsion device. The sliding piston is embedded and installed between the upper and lower sliding notches, and the pushing insulator is arranged between the sensing element 10 and the sliding piston. The pressure sensing element It is fixedly installed on the push insulator, which is rigidly connected with the sliding piston.

Embodiment 3

[0030] Example 3 : see figure 1 , figure 2 , as an improvement of the present invention, the number of the stoppers 15 is two groups, which are installed on the upper and lower sliding notches correspondingly, each group has two stoppers, and the two stoppers are respectively arranged on the slide On the left and right sides of the piston, a compression spring 12 is arranged between the left stop block and the sliding piston 13 . The push insulator 11 is rigidly connected with the sliding piston, the pressure sensitive element is fixedly installed on the push insulator, the piston can move left and right, and the upper and lower sets of stoppers are fixedly installed on the movable notch to limit the displacement position of the piston.

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Abstract

The invention relates to a generator carbon brush on-line automatic constant voltage regulation and sweeping device. The generator carbon brush on-line automatic constant voltage regulation and sweeping device is characterized by comprising a constant voltage device, a generator rotor, a carbon brush, a slip ring, a constant voltage device support and a carbon brush support; the slip ring is in rigid connection with the generator rotor; the carbon brush is fixed by the carbon brush support and a brush holder and is in contact with the slip ring; and the constant voltage device is fixed on the constant voltage device support. The generator carbon brush on-line automatic constant voltage regulation and sweeping device delicately use an air source pressure constancy to perform constant voltage compensation control on the carbon brush and introduces dried compressed air to constantly sweep the slip ring of a generator, which greatly prolongs the service life of the device; and the generator carbon brush on-line automatic constant voltage regulation and sweeping device uses on-line measurement of the pressure-sensing element to perform real-time monitoring on the wearing degree of the carbon brush and promptly reminds working staff of checking the thickness of the carbon brush. The generator carbon brush on-line automatic constant voltage regulation and sweeping device is simple in structure, delicate, easy in installation and easy to popularize.

Description

technical field [0001] The invention relates to an adjustment device, in particular to an online automatic constant pressure adjustment and purging device for a carbon brush of a generator, which belongs to the technical field of electric power. Background technique [0002] The carbon brush is the part of dynamic and static contact and energy conversion in the generator set. Through the contact between the carbon brush and the slip ring, the external excitation power is introduced into the rotor winding of the generator, and a rotating magnetic field is established inside the generator, thereby generating an induced potential on the stator winding. The running state of the carbon brush directly affects the normality of the generator set. During the operation of the generator, the slip ring carbon brush ring fire is a relatively serious accident. If it is not handled in time, it will lead to a drop in output and affect the stable operation of the system. Tripping and damage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/00
Inventor 张相珍成涛叶书德
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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