Carbon brush holder structure capable of being used for measuring voltage and current of shaft of hydro-generator

Abstract

A carbon brush holder structure capable of being used for measuring voltage and current of a hydro-generator shaft comprises a generator shaft shell, a brush holder structure is arranged on the generator shaft shell, and a carbon brush is installed on the brush holder structure. The brush carrier structure comprises a mounting base and a mounting column, the mounting base is provided with a plurality of fixing holes and a limiting sliding base, fastening bolts connected with a generator shaft shell are arranged in the fixing holes, a movable base is arranged on the limiting sliding base, and the mounting column matched with a carbon brush is arranged on the movable base. With the adoption of the structure, the mounting seat of the brush carrier structure is made of metal and can be welded or fixed with a fixed part through screws, and reliable strength is ensured; the insulating rod and the carbon brush holder can be tightly fixed together and are insulated from the base; the whole device is simple in structure, convenient to adjust front and back, stable in supporting and convenient to accurately adapt to measurement work.

Description

Technical Field

[0001] The utility model relates to the technical field of hydroelectric power generation equipment, in particular to a carbon brush holder structure that can be used to measure the shaft voltage and current of a hydrogenerator. Background Art

[0002] The existing large shaft carbon brush holder structure of a hydrogenerator is generally a metal bracket, which can ground the rotating metal part of the large shaft through carbon brushes and brush holders. However, in actual applications, if it is necessary to measure the shaft voltage, the carbon brush in contact with the rotating part of the large shaft needs to be led out through a cable for voltage measurement; if it is necessary to measure the shaft grounding current, the carbon brush in contact with the rotating part of the large shaft needs to be grounded through a cable and the grounding current is measured; in both of the above cases, the carbon brush needs to be insulated from the ground. The existing technology is extremely cumbersome in operation and has certain potential safety hazards. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a carbon brush holder structure that can be used to measure the shaft voltage and current of a hydrogenerator. The mounting seat of this brush holder structure is made of metal, which can be welded or screwed to the fixed part, and ensures reliable strength; the insulating rod and the carbon brush holder can be tightly fixed together and insulated from the base; the whole device has a simple structure, is convenient for front and back adjustment, has stable support, and is convenient for accurate adaptation to measurement work.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a carbon brush holder structure that can be used to measure the shaft voltage and current of a hydrogenerator, including a generator shaft housing, on which a brush holder structure is provided, and a carbon brush is installed on the brush holder structure.

[0005] The brush holder structure includes a mounting seat and a mounting post. The mounting seat is provided with a plurality of fixing holes and limit sliding seats. Fastening bolts for connecting with the generator shaft housing are arranged in the fixing holes. A moving seat is arranged on the limit sliding seat, and a mounting post for mounting and cooperating with the carbon brush is arranged on the moving seat.

[0006] In a preferred solution, the moving seat is provided with a limit groove for cooperating with the limit sliding seat, an installation screw rod is arranged on the moving seat, the installation screw rod is in threaded connection with the mounting post, positioning seats are symmetrically arranged on the moving seat, and a tightening screw rod is arranged on the positioning seat and is in threaded cooperation with the positioning seat.

[0007] In a preferred solution, a backing plate is arranged at the contact end of the tightening screw rod and the mounting seat.

[0008] In a preferred solution, the mounting post includes an insulating rod in threaded connection with the installation screw rod, and an anti-slip rubber rod for mounting and cooperating with the carbon brush is arranged on the insulating rod.

[0009] In a preferred solution, a plurality of anti-slip grooves are arranged on the insulating rod.

[0010] The carbon brush holder structure provided by the utility model can be used to measure the shaft voltage and current of a hydrogenerator. By adopting the above structure, it has the following beneficial effects:

[0011] (1) The mounting seat of the brush holder structure is made of metal and can be welded or fixed with screws to the fixed part, ensuring reliable strength;

[0012] (2) The insulating rod and the carbon brush holder can be firmly fixed together and insulated from the base;

[0013] (3) The whole device has a simple structure, is convenient for front-back adjustment, has stable support, and is convenient for accurate adaptation to the measurement work. Description of the Drawings

[0014] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0016] Figure 2 It is a schematic diagram of the brush holder structure of the present utility model.

[0017] Figure 3 It is a schematic diagram of the brush holder structure of the present utility model.

[0018] Figure 4 It is a schematic diagram of the moving seat structure of the present utility model.

[0019] Figure 5 It is a schematic diagram of the mounting column structure of the present utility model.

[0020] In the figure: generator shaft housing 1, mounting seat 2, mounting column 3, carbon brush 4, fixing hole 5, fastening bolt 6, limit sliding seat 7, moving seat 8, limit groove 9, mounting screw 10, positioning seat 11, jacking screw 12, backing plate 13, insulating rod 14, anti-slip rubber rod 15, anti-slip groove 16. Detailed Embodiments

[0021] As shown in Figures 1-5 the carbon brush holder structure that can be used to measure the shaft voltage and current of a hydrogenerator includes a generator shaft housing 1, on which a brush holder structure is provided, and a carbon brush 4 is installed on the brush holder structure;

[0022] The brush holder structure includes a mounting seat 2 and a mounting column 3. The mounting seat 2 is provided with a plurality of fixing holes 5 and a limit sliding seat 7. A fastening bolt 6 for connecting with the generator shaft housing 1 is arranged in the fixing hole 5. A moving seat 8 is arranged on the limit sliding seat 7, and a mounting column 3 for mounting and cooperating with the carbon brush 4 is arranged on the moving seat 8.

[0023] In a preferred embodiment, a limiting groove 9 that cooperates with the limiting sliding seat 7 is provided on the moving seat 8. An installation screw rod 10 is provided on the moving seat 8. The installation screw rod 10 is threadedly connected to the installation column 3. Positioning seats 11 are symmetrically provided on the moving seat 8. Tightening screw rods 12 that are threadedly engaged therewith are provided on the positioning seats 11. The specific working position of the carbon brush can be adjusted back and forth, which is convenient and flexible.

[0024] In a preferred embodiment, a backing plate 13 is provided at the contact end of the tightening screw rod 12 and the mounting seat 2. The positioning is more reliable and stable.

[0025] In a preferred embodiment, the installation column 3 includes an insulating rod 14 that is threadedly connected to the installation screw rod 10. An anti-slip rubber rod 15 for mounting the carbon brush 4 is provided on the insulating rod 14. It has insulation protection and anti-slip installation, and has strong practicability.

[0026] In a preferred embodiment, a plurality of anti-slip grooves 16 are provided on the insulating rod 14. The anti-slip performance is improved, and the disassembly and assembly of the insulating rod 14 are facilitated.

[0027] The beneficial effects of the present utility model: The mounting seat of the brush holder structure is made of metal, and can be welded or fixed with screws to the fixed part, and the strength is guaranteed to be reliable; the insulating rod and the carbon brush holder can be firmly fixed together and kept insulated from the base; the whole device has a simple structure, is convenient for front-back adjustment, has stable support, and is convenient for accurate adaptation and measurement work.

Claims

1. A carbon brush holder structure for measuring shaft voltage and current of a hydro-turbine generator, comprising a generator shaft housing (1), characterized in that: The generator shaft housing (1) is provided with a brush holder structure, and a carbon brush (4) is installed on the brush holder structure; The brush holder structure comprises a mounting seat (2) and a mounting column (3); the mounting seat (2) is provided with a plurality of fixing holes (5) and a limiting slide seat (7); a fastening bolt (6) connected to the generator shaft housing (1) is provided in the fixing hole (5); a moving seat (8) is provided on the limiting slide seat (7); and a mounting column (3) which is mounted and matched with the carbon brush (4) is provided on the moving seat (8); The movable seat (8) is provided with a limit groove (9) which cooperates with the limit slide seat (7); the movable seat (8) is provided with a mounting screw (10), the mounting screw (10) is threadedly connected to the mounting column (3); the movable seat (8) is symmetrically provided with a positioning seat (11), and the positioning seat (11) is provided with a tightening screw (12) which is threadedly matched with the positioning seat (11); The mounting column (3) comprises an insulating rod (14) threadedly connected to the mounting screw rod (10), and an anti-slip rubber rod (15) for mounting and cooperating with the carbon brush (4) is provided on the insulating rod (14).

2. The carbon brush holder structure for measuring shaft voltage and current of a hydro-generator according to claim 1 is characterized in that: A pad (13) is provided at the contact end between the tightening screw rod (12) and the mounting seat (2).

3. The carbon brush holder structure for measuring shaft voltage and current of a hydro-generator according to claim 1 is characterized in that: The insulating rod (14) is provided with a plurality of groups of anti-slip grooves (16).

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