CN210183153U

CN210183153U - Novel brush holder structure for hydraulic generator

Info

Publication number: CN210183153U
Application number: CN201921060655.2U
Authority: CN
Inventors: Lielong Wu; 吴烈龙
Original assignee: HANGZHOU RESOURCE POWER EQUIPMENT CO Ltd
Current assignee: HANGZHOU RESOURCE POWER EQUIPMENT CO Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-03-24
Anticipated expiration: 2029-07-09

Abstract

The utility model relates to a novel brush yoke structure for hydraulic generator, affiliated hydraulic power generating equipment technical field, including the brush yoke, be equipped with a plurality of brush posts that are equidistant annular distribution in the brush yoke, be equipped with a plurality of carbon brush intercommunication subassemblies between two brush posts, be equipped with a plurality of layers of conducting ring in the brush yoke, the conducting ring below is equipped with a plurality of carbon brushes fixed with conducting ring looks bolted connection, and the carbon brush touches the formula intercommunication with carbon brush intercommunication subassembly and is connected. The carbon brush communicating component comprises a screw, a plurality of collecting rings in contact type communicating connection with the carbon brushes are arranged on the screw, and nuts in threaded type sleeving connection with the screw are arranged at the upper end and the lower end of the screw. The heat dissipation device has the characteristics of simple structure, good heat dissipation performance and low abrasion. The area of a friction path of the carbon brush on the collecting ring is increased, the heat per unit area of the friction surface of the collecting ring is reduced, the heat dissipation capacity of the friction surface of the collecting ring is improved, the temperature is reduced, the abrasion of the carbon brush is reduced, and the carbon brush is more durable.

Description

Novel brush holder structure for hydraulic generator

Technical Field

The utility model relates to a hydraulic generator technical field, concretely relates to a novel brush yoke structure for hydraulic generator.

Background

The magnetic pole of the water turbine generator rotor generates a rotating magnetic field through current, and excitation current can be transmitted to the magnetic pole only through the carbon brush, so the carbon brush is an important part of the water turbine generator set. The carbon brush abrasion is generally caused by overhigh temperature of the contact surface of the carbon brush and a collecting ring, so that the following reasons are adopted: poor ventilation, heat generation due to mechanical friction between the carbon brushes and the collector rings, excessive excitation current passing through a single carbon brush and the like.

The traditional carbon brush arrangement mode is that a plurality of carbon brushes are uniformly arranged on a conducting ring of a brush holder device, and the carbon brushes are all positioned on the same horizontal plane. For some units with larger exciting current, the number of the carbon brushes needs to be increased, the exciting current passing through a single carbon brush needs to be reduced, but the newly added carbon brush can generate heat, so that the heat per unit area of the friction surface of the collecting ring is increased, the contact area of the friction surface of the collecting ring and air is reduced, so that the heat dissipation is poor, the temperature of the friction surface of the collecting ring is increased, and the carbon brushes are more easily abraded.

Disclosure of Invention

The utility model discloses there is the poor and fast not enough of wearing and tearing of heat dispersion among the main prior art of solving, provides a novel brush yoke structure for hydraulic generator, and it has simple structure, heat dispersion good and the slow characteristics of wearing and tearing. The area of a friction path of the carbon brush on the collecting ring is increased, the heat per unit area of the friction surface of the collecting ring is reduced, the heat dissipation capacity of the friction surface of the collecting ring is improved, the temperature is reduced, the abrasion of the carbon brush is reduced, and the carbon brush is more durable.

The above technical problem of the present invention can be solved by the following technical solutions:

the utility model provides a novel brush yoke structure for hydraulic generator, includes the brush yoke, the brush yoke in be equipped with a plurality of brush posts that are equidistant annular distribution, be equipped with a plurality of carbon brush intercommunication subassemblies between two brush posts, the brush yoke in be equipped with a plurality of layers of conducting ring, conducting ring below be equipped with a plurality of and conducting ring looks bolted connection fixed carbon brushes, carbon brush and carbon brush intercommunication subassembly touch formula intercommunication be connected mutually. The carbon brush communicating assembly comprises a screw, a plurality of collecting rings in contact type communicating connection with the carbon brushes are arranged on the screw, and nuts in threaded type sleeving connection with the screw are arranged at the upper end and the lower end of the screw.

Preferably, an outer sleeve sleeved with the screw is arranged between two adjacent collecting rings, and an inner sleeve is arranged between the outer sleeve and the screw.

Preferably, insulators are arranged between the outer sleeve and the collecting ring and between the collecting ring and the nut.

Preferably, a gasket is arranged between the insulator and the nut.

The utility model discloses can reach following effect:

the utility model provides a novel brush yoke structure for hydraulic generator compares with prior art, has simple structure, good and the slow characteristics of wearing and tearing of heat dispersion. The area of a friction path of the carbon brush on the collecting ring is increased, the heat per unit area of the friction surface of the collecting ring is reduced, the heat dissipation capacity of the friction surface of the collecting ring is improved, the temperature is reduced, the abrasion of the carbon brush is reduced, and the carbon brush is more durable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the side view of the part of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

In the figure: the brush comprises a brush frame 1, a brush column 2, a carbon brush communicating component 3, a screw rod 4, a nut 5, a gasket 6, an insulator 7, a conducting ring 8, a carbon brush 9, an outer sleeve 10, an inner sleeve 11 and a collecting ring 12.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): as shown in fig. 1, 2 and 3, a novel brush holder structure for a hydro-generator includes a brush holder 1, 6 brush posts 2 are arranged in the brush holder 1 and are distributed in an equidistant annular shape, 5 groups of carbon brush communicating components 3 are arranged between the two brush posts 2, 2 layers of conducting rings 8 are arranged in the brush holder 1, 150 carbon brushes 9 fixed with the conducting rings 8 through bolts are arranged below the conducting rings 8, and the carbon brushes 9 are connected with the carbon brush communicating components 3 in a contact type communicating manner. The carbon brush communicating component 3 comprises a screw rod 4, 2 collecting rings 12 which are in contact type communicating connection with the carbon brushes 9 are arranged on the screw rod 4, an outer sleeve 10 which is sleeved with the screw rod 4 is arranged between the two collecting rings 12, and an inner sleeve 11 is arranged between the outer sleeve 10 and the screw rod 4. The upper end and the lower end of the screw rod 4 are respectively provided with a nut 5 which is in threaded sleeve joint with the screw rod 4. Insulators 7 are arranged between the outer sleeve 10 and the collecting ring 12 and between the collecting ring 12 and the nut 5. And a gasket 6 is arranged between the insulator 7 and the nut 5.

To sum up, this a novel brush yoke structure for hydraulic generator has simple structure, heat dispersion is good and the slow characteristics of wearing and tearing. The area of a friction path of the carbon brush on the collecting ring is increased, the heat per unit area of the friction surface of the collecting ring is reduced, the heat dissipation capacity of the friction surface of the collecting ring is improved, the temperature is reduced, the abrasion of the carbon brush is reduced, and the carbon brush is more durable.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without deviating from the basic characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In conclusion, the above description is only the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. The utility model provides a novel brush yoke structure for hydraulic generator which characterized in that: the carbon brush comprises a brush holder (1), wherein a plurality of brush columns (2) are annularly distributed at equal intervals in the brush holder (1), a plurality of carbon brush communicating assemblies (3) are arranged between the two brush columns (2), a plurality of layers of conducting rings (8) are arranged in the brush holder (1), a plurality of carbon brushes (9) which are fixedly connected with the conducting rings (8) through bolts are arranged below the conducting rings (8), and the carbon brushes (9) are in contact connection type communicating connection with the carbon brush communicating assemblies (3); the carbon brush communicating component (3) comprises a screw (4), a plurality of collecting rings (12) in contact type communicating connection with the carbon brushes (9) are arranged on the screw (4), and nuts (5) in threaded type sleeving connection with the screw (4) are arranged at the upper end and the lower end of the screw (4).

2. The novel brush holder structure for the hydro-generator according to claim 1, characterized in that: an outer sleeve (10) sleeved with the screw (4) is arranged between two adjacent collecting rings (12), and an inner sleeve (11) is arranged between the outer sleeve (10) and the screw (4).

3. The novel brush holder structure for the hydro-generator according to claim 2, characterized in that: insulators (7) are arranged between the outer sleeve (10) and the collecting ring (12) and between the collecting ring (12) and the nut (5).

4. The novel brush holder structure for the hydro-generator according to claim 3, characterized in that: and a gasket (6) is arranged between the insulator (7) and the nut (5).