CN215748475U

CN215748475U - Device for polishing and cleaning collector ring of generator in electrified manner

Info

Publication number: CN215748475U
Application number: CN202121915585.1U
Authority: CN
Inventors: 冉帅; 马军; 何雪芳; 舒强
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-02-08
Anticipated expiration: 2031-08-16

Abstract

The utility model provides a device for polishing and cleaning a collector ring of a generator in an electrified way, which comprises a brush holder structure, wherein the brush holder structure comprises a support arm, the head of the support arm is processed to form a transition key, a wedge-shaped block is arranged on the lower side of the tail of the transition key, a spring positioning pin is arranged at the central part below the transition key, a radial spring is positioned and sleeved on the spring positioning pin, a brush box is fixed at the top end of the head of the transition key, an insulating block is arranged in the brush box, and a polishing material for polishing or cleaning the collector ring of the generator is arranged on the insulating block; the wedge-shaped block is matched with the brush seat. The device can be used for polishing and cleaning the collector ring of the generator, and has the advantages of high safety, simple structure, easiness in operation, universal applicability and popularization value.

Description

Device for polishing and cleaning collector ring of generator in electrified manner

Technical Field

The utility model belongs to the field of grinding equipment for generator collector rings, and particularly relates to a device for grinding and cleaning generator collector rings in an electrified manner.

Background

For a long time, in the operation process of the excitation slip ring device of the rotor of the water turbine generator set, the excitation carbon brush has the defects of overhigh temperature and even sparking at different degrees due to the accumulation of pockmarks, burrs, oil stains and the like of the collecting ring. If the defects are not processed in time, the carbon brush braid with abnormal temperature is burnt and melted, other carbon brushes which normally run in the same pole are further affected, and the vicious circle finally causes the unit to be unplanned and forced to stop running.

At present, the general way for dealing with the defects is that an operator directly holds sand paper or alcohol cloth to clean and polish the collecting ring. This operation method has the following 3 disadvantages: 1. the electrical distance between an operator and live parts such as a collecting ring, a conducting ring and the like is only about 20mm, and the risk of electric shock exists; 2. the sand paper and alcohol cloth held by hands can fall off and are rolled into the gap between the collecting ring and the conducting ring rotating at high speed, so that secondary risk is caused; 3. the operator can easily feel fatigue after long-time cantilever operation, and the defect eliminating effect is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a device for polishing and cleaning a generator collecting ring in an electrified manner, which can be used for polishing and cleaning the generator collecting ring, and has the advantages of high safety, simple structure, easy operation, universal applicability and popularization value.

In order to achieve the technical features, the utility model is realized as follows: a device for polishing and cleaning a collector ring of a generator in an electrified way comprises a brush holder structure, wherein the brush holder structure comprises a support arm, the head of the support arm is processed to form a transition key, a wedge-shaped block is arranged on the lower side of the tail of the transition key, a spring positioning pin is arranged at the central part below the transition key, a radial spring is sleeved on the spring positioning pin in a positioning way, a brush box is fixed at the top end of the head of the transition key, an insulating block is arranged in the brush box, and a polishing material for polishing or cleaning the collector ring of the generator is arranged on the insulating block; the wedge-shaped block is matched with the brush seat.

The tail part of the support arm is provided with a handle for holding.

And a limiting disc is arranged on one side of the handle close to the transition key.

And rubber insulating layers for insulation are arranged on the outer surfaces of the support arm and the handle.

And spring positioning pins for limiting the radial springs are symmetrically arranged on two sides of the tail of each spring positioning pin.

The end part of the insulating block is provided with a limiting skirt edge, first screw holes are processed on two side walls of the insulating block, the first screw holes positioned on two sides are respectively matched with the first set screw and the second set screw, and the grinding material is fixed.

The inside of brush holder is provided with and is used for with wedge matched with spacing spout, the bottom of brush holder is provided with unable adjustment base, unable adjustment base is last to be provided with waist shape bolt hole respectively the symmetry.

The top and the bottom of brush box are processed and are had the second screw hole of symmetrical arrangement, are located both sides the second screw hole carries out the screw with third holding screw and fourth respectively and cooperatees to fix the insulating block, processing has on the insulating block and is used for carrying out screw matched with through-hole with third holding screw and fourth.

The grinding material is sand paper or rag.

The utility model has the following beneficial effects:

1. the live working of personnel is safer. When the abrasive paper and the rag are held by hands in the traditional way for operation, the safety distance between a person and a 500V direct current charged body is about 20 mm. When the tool is used for operation, the support arm and the handle are both provided with the insulating rubber protective layers, so that the safety can be increased to 100 mm;

2. the rotary part risk is circumvented. Conventionally, a damaged sandpaper or rag may be wound into the gap between the collector ring and the conductive ring rotating at a high speed, causing secondary risk. When the cleaning cloth abrasive paper fixing tool is used for operation, the cleaning cloth abrasive paper is fixed along the rotation direction of the collecting ring through the countersunk head bolt, and even if the cleaning cloth abrasive paper is damaged, the cleaning cloth abrasive paper can be kept fixed on the insulating block. Meanwhile, the clearance between the wedge block and the brush holder is customized, and even if the maximum radial depth is reached, metal friction between the brush box and the collecting ring can not occur.

3. Simple structure and repeated use. Convenient operation and standardized operation. After the customization is completed according to the slip ring device of the unit, the polishing device can be assembled in advance when the equipment normally runs. When the brush holder is actually operated and applied, the brush holder is directly inserted into the brush seat, and the collecting ring can be cleaned by pressing the handle;

4. can be popularized to other generator sets. The shape and height of the wedge-shaped block and the shape of the brush box can be changed according to the slip ring structure of the generator of each station.

Drawings

The utility model is further illustrated by the following figures and examples.

Fig. 1 is a three-dimensional view of the overall structure of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a front view of the overall structure of the present invention.

Fig. 4 is a top view of the overall structure of the present invention.

Fig. 5 is a right side view of the overall structure of the present invention.

In the figure: handle 1, support arm 2, spacing dish 3, transition key 4, wedge 5, spring locating pin 6, spring locating pin 7, fourth go on screw 8, brush box 9, second screw hole 10, third holding screw 11, first holding screw 12, first screw hole 13, insulating block 14, second holding screw 15, through-hole 16, spacing shirt rim 17, radial spring 18, spacing spout 19, brush holder 20, kidney-shaped bolt hole 21, unable adjustment base 22.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1-5, a device for cleaning a collector ring of a generator by charged grinding comprises a brush holder structure, wherein the brush holder structure comprises a support arm 2, the head of the support arm 2 is processed to form a transition key 4, a wedge-shaped block 5 is arranged on the lower side of the tail of the transition key 4, a spring positioning pin 7 is arranged at the central position below the transition key 4, a radial spring 18 is positioned and sleeved on the spring positioning pin 7, a brush box 9 is fixed at the top end of the head of the transition key 4, an insulating block 14 is arranged in the brush box 9, and a grinding material for grinding or cleaning the collector ring of the generator is arranged on the insulating block 14; the wedge-shaped block 5 is matched with the brush holder 20. The device can be used for polishing and cleaning the collector ring of the generator, and has the advantages of high safety, simple structure, easiness in operation, universal applicability and popularization value. In the use process, the grinding material is reliably fixed on the insulating block 14 and is in contact with the collector ring of the generator, so that the collector ring is ground and cleaned. The damping is achieved by the radial spring 18.

Further, a handle 1 for holding is arranged at the tail part of the support arm 2. The handle 1 can be used for holding the support arm 2 and pushing the insulating block 14 to be in contact with the collector ring of the generator.

Furthermore, a limiting disc 3 is arranged on one side of the handle 1, which is close to the transition key 4. The limiting disc 3 is used for limiting.

Further, the outer surfaces of the support arm 2 and the handle 1 are provided with rubber insulation layers for insulation. The rubber insulating layer plays a good insulating role, and the safety in the operation process is further ensured.

Further, spring positioning pins 6 used for limiting the radial springs 18 are symmetrically arranged on two sides of the tail of the spring positioning pin 7. The spring positioning pin 7 can be used for radially limiting the radial spring 18, and the spring positioning pin 6 is used for fixing the end head of the radial spring 18.

Furthermore, the end part of the insulating block 14 is provided with a limiting skirt 17, two side walls of the insulating block 14 are provided with first screw holes 13, and the first screw holes 13 positioned at two sides are respectively matched with the first set screw 12 and the second set screw 15, and are used for fixing the grinding material. Can be used for fixing the material of polishing through insulating block 14, can carry out spacing to insulating block 14 through spacing shirt rim 17.

Further, brush holder 20's inside is provided with and is used for with wedge 5 matched with spacing spout 19, brush holder 20's bottom is provided with unable adjustment base 22, last the symmetry of unable adjustment base 22 is provided with kidney bolt hole 21 respectively. The brush holder 20 ensures that the wedge-shaped block 5 can slide in the limiting sliding groove 19, thereby controlling the extension of the insulating block 14.

Furthermore, the top end and the bottom end of the brush box 9 are provided with symmetrically arranged second screw holes 10, the second screw holes 10 positioned on two sides are respectively matched with a third set screw 11 and a fourth set screw 8 and fix an insulating block 14, and the insulating block 14 is provided with a through hole 16 which is used for being matched with the third set screw 11 and the fourth set screw 8. By the above-described fixing structure, it is ensured that the insulating block 14 can be fixed inside the brush box 9.

Further, the grinding material is sand paper or rag. The generator collector ring can be polished or cleaned as required by the material.

The using process of the utility model is as follows:

when the generator normally operates, radial springs with different lengths and strengths can be selected according to the slip ring structure of each generator in advance, and the assembly of the standby grinding tool is completed. The specific assembly method is as follows: folding the sandpaper or the cleaning cloth, and fixing the sandpaper or the cleaning cloth on the front surface and two side surfaces of the insulating block 14 through the first set screws 12; placing the insulating block 14 into the brush box 9 and fixing with a third set screw 11; sleeving the radial spring 18 into a cylindrical pin at the front end of the wedge-shaped block, and limiting by using a spring positioning pin 6, wherein a spare appliance can be respectively prepared for a sand paper insulating block for polishing and a cleaning cloth insulating block for cleaning;

when the carbon brushes of the generator are overheated under the condition that the length of the carbon brushes is normal, any excitation carbon brush can be taken down when the generator set operates normally, and alcohol is soaked on the cleaning cloth. The electrified grinding appliance is inserted into the original brush holder, the cleaning cloth just contacts the rotating collecting ring, and a part of gap is left between the wedge-shaped block of the brush holder and the brush holder. The handle is held tightly and pressed inwards, and the radial spring 18 is appropriately deformed to adjust the pressure of the cleaning cloth and the collecting ring, so that the collecting ring is cleaned. In the cleaning and polishing process, the spare tool can be used for quick replacement, and the efficiency is improved.

Claims

1. The utility model provides a device that is used for electrified clean generator collecting ring that polishes which characterized in that: the electric generator collector ring polishing device comprises a brush holding structure, wherein the brush holding structure comprises a support arm (2), the head of the support arm (2) is processed to form a transition key (4), a wedge-shaped block (5) is arranged on the lower side of the tail of the transition key (4), a spring positioning pin (7) is arranged at the center of the lower part of the transition key (4), a radial spring (18) is sleeved on the spring positioning pin (7) in a positioning manner, a brush box (9) is fixed at the top end of the head of the transition key (4), an insulating block (14) is arranged in the brush box (9), and a polishing material for polishing or cleaning a generator collector ring is arranged on the insulating block (14); the wedge-shaped block (5) is matched with the brush holder (20).

2. The device for electrified sanding cleaning of generator collector rings according to claim 1, characterized in that: the tail part of the support arm (2) is provided with a handle (1) for holding.

3. The device for electrified sanding cleaning of generator collector rings according to claim 2, characterized in that: and a limiting disc (3) is arranged on one side of the handle (1) close to the transition key (4).

4. The device for electrified sanding cleaning of generator collector rings according to claim 2, characterized in that: and rubber insulation layers for insulation are arranged on the outer surfaces of the support arm (2) and the handle (1).

5. The device for electrified sanding cleaning of generator collector rings according to claim 1, characterized in that: and spring positioning pins (6) used for limiting the radial springs (18) are symmetrically arranged on two sides of the tail of the spring positioning pin (7).

6. The device for electrified sanding cleaning of generator collector rings according to claim 1, characterized in that: the end position of insulating block (14) is provided with spacing shirt rim (17), processing has first screw hole (13) on the both sides wall of insulating block (14), is located both sides first screw hole (13) cooperate with first holding screw (12) and second holding screw (15) respectively to it fixes to polish the material.

7. The device for electrified sanding cleaning of generator collector rings according to claim 1, characterized in that: the inside of brush seat (20) is provided with and is used for spacing spout (19) with wedge (5) matched with, the bottom of brush seat (20) is provided with unable adjustment base (22), last symmetry of unable adjustment base (22) is provided with kidney bolt hole (21) respectively.

8. The device for electrified sanding cleaning of generator collector rings according to claim 1, characterized in that: the top and the bottom of brush box (9) are processed and are had second screw hole (10) of symmetrical arrangement, are located both sides second screw hole (10) carry out screw (8) with third holding screw (11) and fourth respectively and cooperate to fix insulating block (14), processing has on insulating block (14) to be used for carrying out screw (8) matched with through-hole (16) with third holding screw (11) and fourth.

9. The device for electrified sanding cleaning of generator collector rings according to claim 1, characterized in that: the grinding material is sand paper or rag.