CN217207438U

CN217207438U - Closed dust removal structure of hydroelectric set stopper

Info

Publication number: CN217207438U
Application number: CN202121448265.XU
Authority: CN
Inventors: 王贵; 金玉成
Original assignee: Hadong National Hydroelectric Power Equipment Engineering Technology Research Central Co ltd; Harbin Electric Machinery Co Ltd
Current assignee: Hadong National Hydroelectric Power Equipment Engineering Technology Research Central Co ltd; Harbin Electric Machinery Co Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-08-16
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a closed dust removal structure of hydroelectric set stopper. The piston servomotor, the driving connecting rod, the central threaded connecting hole, the brake head, the annular groove, the threaded mounting hole, the round hole, the hexagon bolt, the brake pad, the countersunk head bolt, the main mounting hole, the brush group, the air suction hole and the pipe joint. The utility model discloses a brush group encloses into the dust with the brake block and keeps apart the chamber, changes hydroelectric set braking dust absorption mode into the little space dust absorption by the big space dust absorption, has improved the absorptive effect of braking dust, has guaranteed the safety of unit operation.

Description

Closed dust removal structure of hydroelectric set stopper

Technical Field

The utility model relates to a hydraulic generator field especially relates to a hydroelectric set stopper dust collector.

Background

The hydraulic generator can be mechanically braked by the brake to shorten the braking time in order to prevent the thrust pad abrasion accident caused by overlong running time of low rotating speed in the shutdown process of the unit. The mechanical braking is completed by a plurality of groups of brakes arranged below the generator rotor, and the machine set stops rotating as soon as possible through the friction resistance generated by the brake pads and the rotating body of the brakes. Certain dust can be produced in the friction process of the brake pad, and if the dust is not collected and treated in time, the dust can diffuse and pollute key components such as a generator coil winding and the like, so that the insulation level of motor components is reduced. The dust collector is arranged below the generator rotor in the traditional brake dust removal process, and due to the fact that the dust removal operation space is large, the dust collector is difficult to effectively absorb all dust diffused out, and potential safety hazards exist in unit operation.

Disclosure of Invention

In view of this, the utility model aims at overcoming above defect, provide a hydroelectric set stopper closed dust removal structure. The technical scheme of the utility model is that: the piston servomotor, the driving connecting rod, the brake head, the brake pad, the brush set, the air suction hole and the pipe joint, wherein the brake head is placed at the upper part of the driving connecting rod, the brush set is inserted in the annular groove, the main mounting hole is connected with the central threaded connecting hole through the countersunk head bolt, the hexagonal bolt penetrates through the circular hole to be connected with the threaded mounting hole, the brake pad is fixed at the upper part of the brake head, and the pipe joint is connected with the air suction hole through threads.

In the closed dust removal structure of the brake of the hydroelectric generating set, the brush set and the brake pad enclose a dust isolation cavity.

In the closed dust removing structure of the brake of the hydroelectric generating set, the air suction hole is of an L-shaped structure, and the dust isolating cavity is communicated with a pipe joint at the side edge of the brake head.

In the closed dust removing structure of the brake of the water turbine generator set, the piston servomotor is in a pneumatic control or hydraulic control mode.

In the closed dust removing structure of the brake of the hydroelectric generating set, the driving connecting rod can move in a telescopic mode in the vertical direction.

The beneficial effects of the utility model are that:

the utility model discloses a brush group encloses into the dust with the brake block and keeps apart the chamber, and in the dust can directly not spread the machine hole when guaranteeing the stopper use, built-in suction hole installs the coupling, can be convenient be connected with the dust catcher, changes hydroelectric set braking dust absorption mode into little space dust absorption by the big space dust absorption, has improved the absorptive effect of braking dust, has guaranteed the safety of unit operation.

Drawings

Other features, objects and advantages of the invention will be understood from the following further description and description of non-limiting embodiments thereof with reference to the accompanying drawings, in which:

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

The notation in the figure is:

1-a piston servomotor; 2-a drive link; 3-central threaded connection hole; 4-a brake head; 5-an annular groove; 6-a threaded mounting hole; 7-a circular hole; 8-hexagon bolts; 9-brake pads; 10-countersunk head bolt; 11-a main mounting hole; 12-a brush group; 13-a suction hole; 14-pipe joint.

Detailed Description

In order to make the technical means, creation features and technical effects to be realized by the present invention easily understood, the present invention will be further described with reference to the accompanying drawings.

As shown in figure 1, the closed dust removing structure of the brake of the hydroelectric generating set comprises a piston servomotor 1, a driving connecting rod 2, a central threaded connecting hole 3, a brake head 4, an annular groove 5, a threaded mounting hole 6, a round hole 7, a hexagon bolt 8, a brake pad 9, a countersunk head bolt 10, a main mounting hole 11, a brush set 12, an air suction hole 13 and a pipe joint 14.

The brake head 4 is vertically aligned with the driving connecting rod 2 on the piston servomotor 1, and the central mounting hole on the driving connecting rod 2 is connected with the main mounting hole 11 through the countersunk head bolt 10.

The brake pad 9 and the brake head 4 are vertically aligned and connected with the threaded mounting hole 6 through the round hole 7 by the hexagon bolt 8.

The brush set 12 is inserted into the annular groove 5 installed at the upper portion of the brake head 4.

The pipe joint 14 is connected with the suction hole 13 on the brake head 4 and then is connected with the pipeline of the external dust collector.

The working principle is as follows: when the hydroelectric generating set is put into mechanical braking, the driving connecting rod 2 on the piston servomotor 1 extends upwards to drive the brake head 4 to move upwards for a certain distance, so that the brake pad 9 is in contact with a rotating body of the generating set to perform friction braking, dust generated by the brake pad is positioned in a dust isolation cavity enclosed by the brush set 12 and the brake pad 9, an external dust collector is started to generate negative pressure in the isolation cavity, air continuously flows towards the direction of the air suction hole 13 through a tiny gap of the brush set 12, and the dust generated by the brake pad during braking is driven to enter the dust collector, so that the closed dust removal function of the brake is realized. Will the utility model discloses the equipment is accomplished the back in proper order, and the dust catcher is inserted in the coupling outside.

Finally, the scope of protection of the present invention is not limited to the above-described embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. The present invention includes such modifications and variations, provided they come within the scope of the appended claims and their equivalents.

Claims

1. A closed dust removal structure of hydroelectric set stopper, characterized by: the piston servomotor (1), the driving connecting rod (2), the brake head (4), the brake pad (9), the brush set (12), the air suction hole (13) and the pipe joint (14) form the structure, the brake head (4) is placed on the upper portion of the driving connecting rod (2), the brush set (12) is inserted into the annular groove (5), the main mounting hole (11) is connected with the central threaded connecting hole (3) through the countersunk head bolt (10), the hexagonal bolt (8) penetrates through the round hole (7) to be connected with the threaded mounting hole (6), the brake pad (9) is fixed on the upper portion of the brake head (4), and the pipe joint (14) is connected with the air suction hole (13) through threads.

2. The enclosed dust removing structure of the hydroelectric generating set brake as claimed in claim 1, wherein: the brush group (12) and the brake block (9) enclose a dust isolation cavity.

3. The enclosed dust removing structure of the hydroelectric generating set brake as claimed in claim 1, wherein: the air suction hole (13) is of an L-shaped structure, and the dust isolation cavity is communicated with a pipe joint (14) on the side edge of the brake head (4).

4. The enclosed dust removing structure of the hydroelectric generating set brake as claimed in claim 1, wherein: the piston servomotor (1) adopts a pneumatic control or hydraulic control mode.

5. The enclosed dust removing structure of the hydroelectric generating set brake as claimed in claim 1, wherein: the driving connecting rod (2) can move in a telescopic mode in the vertical direction.