Dust blowing equipment for preventing carbon powder from being accumulated on carbon brush holder

Abstract

The utility model relates to the technical field of carbon brush holders, in particular to dust blowing equipment for preventing carbon powder from accumulating on a carbon brush holder, which comprises an assembly plate, the carbon brush holder is fixedly mounted on the surface of the assembly plate, a conducting ring is arranged on the surface of the carbon brush holder, and insulating sleeves are arranged on the upper side and the lower side of the conducting ring. A carbon brush body is arranged on the surface of the conducting ring, and the carbon brush is characterized in that an air pipe base is fixedly arranged on the surface of the assembly plate. The air pipe body outputs compressed air to the carbon brush holder through the twelve sets of rotary nozzles, carbon powder generated on the carbon brush holder is blown off through air, the carbon powder is prevented from being accumulated on the insulating sleeve, and it is guaranteed that the hydraulic generator cannot be shut down due to the fact that the insulation of the generator is reduced due to excessive accumulation of the carbon powder; and safe operation of the water-turbine generator set is ensured, the workload of regular maintenance of field maintenance personnel is reduced, and the personal safety of the field maintenance personnel is better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon brush holders, in particular to a dust blowing device for preventing carbon brush holders from accumulating carbon powder. Background Art

[0002] The carbon brush is a device used by the hydro-turbine generator to transmit the excitation current to the rotor circuit. It is generally made of pure carbon and a coagulant, stuck on a metal bracket, and pressed tightly into the carbon brush groove of the brush holder by a spring. When the unit rotates, the excitation current is sent to the rotor circuit through sliding contact with the slip ring.

[0003] During the operation of the hydro-turbine generator, carbon powder generated by the friction between the carbon brush and the conductive ring accumulates on the insulating sleeve, which reduces the insulation effect of the insulating sleeve. At the same time, a large amount of carbon powder accumulation will cause the insulation of the generator rotor to decrease, and the temperature will increase accordingly. In severe cases, it may even cause the rotor to ground and cause an accidental shutdown. The safety is low, so it is necessary to design a dust blowing device to prevent the accumulation of carbon powder on the carbon brush holder. Utility Model Content

[0004] The utility model aims to provide a dust blowing device for preventing carbon powder from accumulating on a carbon brush holder, so as to solve the problem proposed in the above background technology that during the operation of a hydro-turbine generator, carbon powder generated by the friction between a carbon brush and a conductive ring accumulates on an insulating sleeve, which reduces the insulation effect of the insulating sleeve. Meanwhile, a large amount of carbon powder accumulation will cause the insulation of the generator rotor to decrease, and the temperature will increase accordingly. In severe cases, it may even cause the rotor to be grounded, causing an accidental shutdown, and thus the safety is low.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme, a dust blowing device for preventing carbon powder from accumulating on a carbon brush holder: comprising an assembly plate, a carbon brush holder is fixedly mounted on the surface of the assembly plate, a conductive ring is arranged on the surface of the carbon brush holder, insulating sleeves are arranged on the upper and lower sides of the conductive ring, and a carbon brush body is arranged on the surface of the conductive ring, characterized in that an air pipe base is fixedly mounted on the surface of the assembly plate, an air pipe bracket is fixedly connected to the surface of the air pipe base, an air pipe clamp is fixedly connected to the surface of the air pipe bracket, an air pipe body is fixedly mounted on the surface of the air pipe clamp, inlet pipes are fixedly connected to both sides of the air pipe body, a rotating nozzle is rotatably connected to the surface of the air pipe body, a gear ring is fixedly connected to the surface of the assembly plate, a mounting seat is fixedly connected to the surface of the assembly plate, an adjusting cylinder is fixedly connected to the surface of the mounting seat, a lifting plate is fixedly connected to the piston rod of the adjusting cylinder, and a rack is fixedly connected to the surface of the lifting plate.

[0006] Preferably, the trachea body is annular, the trachea support supports the trachea body via a trachea clamp, and the height of the trachea body and the rotating nozzle corresponds to the height of the positive and negative electrodes of the carbon brush holder.

[0007] Preferably, twelve groups of rotating nozzles are provided, and the twelve groups of rotating nozzles are evenly arranged in a ring shape on the surface of the trachea body.

[0008] Preferably, the positive and negative poles of the carbon brush holder correspond to the six groups of gear rings on the air pipe body respectively, and the rotating nozzle is tilted downward at an angle of the air pipe body.

[0009] Preferably, two groups of inlet pipes are provided and are symmetrically distributed on the trachea body, and the inlet pipes are connected to 0.7.MPa compressed air.

[0010] Preferably, the lifting plate is annular, and is raised and lowered by adjusting the piston rod of the cylinder. Twelve groups of racks are provided, and the lifting plate drives the twelve groups of racks to rise and fall synchronously.

[0011] Preferably, the rack and the gear ring are meshed with each other, and the rack drives the rotating nozzle to rotate on the air pipe body through the gear ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The dust blowing equipment installs the air pipe bracket on the assembly plate through the air pipe base, and the air pipe bracket supports the air pipe body through the air pipe clamp. The air pipe body is connected to the compressed air through the inlet pipe, and the air pipe body outputs the compressed air to the carbon brush holder through twelve sets of rotating nozzles. The carbon powder generated on the carbon brush holder is blown off by the gas to avoid the accumulation of carbon powder on the insulating sleeve, ensuring that the turbine generator will not be shut down due to excessive accumulation of carbon powder and reduced insulation of the generator, ensuring the safe operation of the turbine generator set, reducing the workload of regular maintenance by on-site maintenance personnel, and protecting the personal safety of on-site maintenance personnel.

[0014] 2. The dust blowing equipment fixes the adjusting cylinder on the assembly plate through the mounting seat. The adjusting cylinder drives the lifting plate to rise and fall through the piston rod. The lifting plate drives the twelve sets of racks to rise and fall. The twelve sets of racks drive the twelve sets of rotating nozzles to rotate on the air pipe body through the gear ring, thereby realizing the angle adjustment of the twelve sets of rotating nozzles at the same time, improving the flexibility of the dust blowing equipment and ensuring the dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a frontal perspective schematic diagram of the dust blowing structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 This is a front view schematic diagram of the dust blowing structure of the utility model;

[0018] Figure 4 It is a front view schematic diagram of the carbon brush holder structure of the utility model;

[0019] Figure 5 It is a front cross-sectional schematic diagram of the conductive ring structure of the utility model.

[0020] In the figure: 1. Assembly plate; 2. Carbon brush holder; 3. Conductive ring; 4. Insulating sleeve; 5. Carbon brush body; 6. Air pipe base; 7. Air pipe bracket; 8. Air pipe clamp; 9. Air pipe body; 10. Rotating nozzle; 11. Gear ring; 12. Mounting seat; 13. Adjusting cylinder; 14. Lifting plate; 15. Rack; 16. Inlet pipe. DETAILED DESCRIPTION

[0021] See also Figure 1-5 , an embodiment provided by the utility model:

[0022] A dust blowing device for preventing carbon powder from accumulating on a carbon frame: comprising an assembly plate 1, a carbon brush holder 2 is fixedly mounted on the surface of the assembly plate 1, a conductive ring 3 is arranged on the surface of the carbon brush holder 2, insulating sleeves 4 are arranged on the upper and lower sides of the conductive ring 3, a carbon brush body 5 is arranged on the surface of the conductive ring 3, an air pipe base 6 is fixedly mounted on the surface of the assembly plate 1, an air pipe bracket 7 is fixedly connected to the surface of the air pipe base 6, an air pipe clamp 8 is fixedly connected to the surface of the air pipe bracket 7, an air pipe body 9 is fixedly mounted on the surface of the air pipe clamp 8, inlet pipes 16 are fixedly connected to both sides of the air pipe body 9, and the air pipe body 9 A rotating nozzle 10 is rotatably connected to the surface of the trachea body 9, and the rotating nozzle 10 rotates on the trachea body 9 in a mechanically sealed manner, thereby avoiding air leakage between the rotating nozzle 10 and the trachea body 9. A gear ring 11 is fixedly connected to the surface of the assembly plate 1, and a mounting seat 12 is fixedly connected to the surface of the assembly plate 1. An adjusting cylinder 13 is fixedly connected to the surface of the mounting seat 12, and a lifting plate 14 is fixedly connected to the piston rod of the adjusting cylinder 13. A rack 15 is fixedly connected to the surface of the lifting plate 14. The dust blowing device can perform all-round dust removal on the carbon brush holder 2, thereby preventing the accumulation of carbon powder.

[0023] Furthermore, the trachea body 9 is annular, and the trachea bracket 7 supports the trachea body 9 through the trachea clamp 8. The height of the trachea body 9 and the rotating nozzle 10 corresponds to the height of the positive and negative poles of the carbon brush holder 2, thereby ensuring that the rotating nozzle 10 can have a sufficiently good dust removal height for the carbon brush holder 2.

[0024] Furthermore, twelve groups of rotary nozzles 10 are provided, and the twelve groups of rotary nozzles 10 are evenly arranged in a ring shape on the surface of the air pipe body 9. The rotary nozzles 10 are around the carbon brush holder 2, so that the rotary nozzles 10 can perform a dust removal angle of 360 degrees, ensuring the dust removal effect.

[0025] Furthermore, the positive and negative poles of the carbon brush holder 2 correspond to the six sets of tooth rings 11 on the air pipe body 9 respectively, the rotating nozzle 10 is tilted downward at an angle on the air pipe body 9, and the angle of the rotating nozzle 10 on the air pipe body 9 can be adjusted, thereby improving the dust removal effect.

[0026] Furthermore, two groups of inlet pipes 16 are provided and symmetrically distributed on the air pipe body 9 . The inlet pipes 16 are connected to 0.7 MPa compressed air, and the inlet pipes 16 output the air to the air pipe body 9 . The air pipe body 9 outputs the air to the carbon brush holder 2 through the rotating nozzle 10 .

[0027] Furthermore, the lifting plate 14 is annular, and is lifted and lowered by adjusting the piston rod of the cylinder 13 . Twelve groups of racks 15 are provided, and the lifting plate 14 drives the twelve groups of racks 15 to rise and fall synchronously. The twelve groups of racks 15 are lifted and lowered horizontally above the assembly plate 1 .

[0028] Furthermore, the rack 15 and the gear ring 11 are meshed with each other, the gear ring 11 is in a three-quarter ring shape, and the twelve groups of racks 15 and the twelve groups of gear rings 11 correspond to each other. The rack 15 drives the rotating nozzle 10 to rotate on the trachea body 9 through the gear ring 11, so that multiple groups of rotating nozzles 10 can rotate on the trachea body 9 at the same time, thereby changing the dust removal angle of the rotating nozzle 10 and improving the dust removal effect.

[0029] Working principle: the trachea bracket 7 is installed on the assembly plate 1 through the trachea base 6, and the trachea bracket 7 supports the trachea body 9 through the trachea clamp 8. The trachea body 9 is connected to the compressed air through the inlet pipe 16, and the trachea body 9 outputs the compressed air to the carbon brush holder 2 through twelve sets of rotating nozzles 10. The carbon powder generated on the carbon brush holder 2 is blown off by the gas to avoid the accumulation of carbon powder on the insulating sleeve 4, so as to ensure that the turbine generator will not be shut down due to the reduction of the insulation of the generator due to excessive accumulation of carbon powder, thereby ensuring the safe operation of the turbine generator set, reducing the workload of regular maintenance by on-site maintenance personnel, and protecting the personal safety of on-site maintenance personnel.

[0030] The adjusting cylinder 13 is fixedly mounted on the assembly plate 1 through the mounting seat 12. The adjusting cylinder 13 drives the lifting plate 14 to rise and fall through the piston rod. The lifting plate 14 drives the twelve groups of racks 15 to rise and fall. The twelve groups of racks 15 drive the twelve groups of rotating nozzles 10 to rotate on the air pipe body 9 through the gear ring 11, thereby realizing the angle adjustment of the twelve groups of rotating nozzles 10 at the same time, improving the flexibility of the dust blowing equipment and ensuring the dust removal effect.

Claims

1. A dust blowing device for preventing carbon powder from accumulating on a carbon brush holder, comprising an assembly plate, a carbon brush holder is fixedly mounted on the surface of the assembly plate, a conductive ring is arranged on the surface of the carbon brush holder, insulating sleeves are arranged on the upper and lower sides of the conductive ring, and a carbon brush body is arranged on the surface of the conductive ring, characterized in that: A trachea base is fixedly installed on the surface of the assembly plate, a trachea bracket is fixedly connected to the surface of the trachea base, a trachea clamp is fixedly connected to the surface of the trachea bracket, a trachea body is fixedly installed on the surface of the trachea clamp, inlet pipes are fixedly connected to both sides of the trachea body, a rotating nozzle is rotatably connected to the surface of the trachea body, a gear ring is fixedly connected to the surface of the assembly plate, a mounting seat is fixedly connected to the surface of the assembly plate, an adjusting cylinder is fixedly connected to the surface of the mounting seat, a lifting plate is fixedly connected to the piston rod of the adjusting cylinder, and a rack is fixedly connected to the surface of the lifting plate.

2. A dust blowing device for preventing carbon powder from accumulating on a carbon brush holder according to claim 1, characterized in that: The trachea body is annular, and the trachea bracket supports the trachea body through a trachea clamp. The height of the trachea body and the rotating nozzle corresponds to the height of the positive and negative electrodes of the carbon brush holder.

3. A dust blowing device for preventing carbon powder from accumulating on a carbon brush holder according to claim 1, characterized in that: The rotating nozzles are provided in twelve groups, and the twelve groups of rotating nozzles are evenly arranged in a ring shape on the surface of the trachea body.

4. The dust blowing device for preventing carbon powder from accumulating on a carbon brush holder according to claim 1, characterized in that: The positive and negative poles of the carbon brush holder correspond to the six groups of tooth rings on the air pipe body respectively, and the rotating nozzle is tilted downward at an angle of the air pipe body.

5. The dust blowing device for preventing carbon powder from accumulating on a carbon brush holder according to claim 1, characterized in that: The inlet pipes are provided in two groups and are symmetrically distributed on the trachea body. The inlet pipes are connected to 0.7.MPa compressed air.

6. The dust blowing device for preventing carbon powder from accumulating on a carbon brush holder according to claim 1, characterized in that: The lifting plate is annular in shape, and is raised and lowered by adjusting the piston rod of the cylinder. Twelve groups of racks are provided, and the lifting plate drives the twelve groups of racks to rise and fall synchronously.

7. The dust blowing device for preventing carbon powder from accumulating on a carbon brush holder according to claim 1, characterized in that: The rack and the gear ring are meshed with each other, and the rack drives the rotating nozzle to rotate on the air pipe body through the gear ring.

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