Dedusting and cooling device for collecting ring of hydro-generator

Abstract

The invention relates to the technical field of hydro-generators, in particular to a hydro-generator collecting ring dedusting and cooling device which comprises a motor spindle and a collecting ring body, the outer wall of the motor spindle fixedly penetrates through the collecting ring body, and the hydro-generator collecting ring dedusting and cooling device further comprises a dustproof shell used for covering the collecting ring body and a dedusting box used for collecting and cleaning carbon powder. Through the arrangement of the filter plate capable of being pulled out and the movable plate structure with the brush plate, the filter plate is cleaned regularly, and filter holes of the filter plate are prevented from being blocked by carbon powder, so that the filtering effect of a filter screen is effectively maintained, the dust remover is ensured to continuously and stably work, and the service life of the dust remover is prolonged. And meanwhile, the collection drawer is arranged at the lower part in the dust removal box and can slide out of the box, so that the collected dust such as carbon powder can be conveniently cleaned, and the dust can be cleaned without complicated operation.

Description

Technical Field

[0001] The present invention relates to the technical field of hydro-generators, and particularly relates to a dust removal and temperature reduction device for a slip ring of a hydro-generator. Background Art

[0002] The rotor excitation of the generator unit conducts the excitation current through graphite carbon brushes. When the rotor rotates, due to the friction with the graphite carbon brushes, fine carbon powder will be generated on the graphite carbon brushes. These fine carbon powders accumulate in the generator set. After long-term accumulation, the insulation between the positive and negative poles of the excitation in the generator room will decrease, endangering the normal operation of the generator set.

[0003] When the existing technology collects the carbon powder at the slip ring through a dust collector, when the internal filter screen of the dust collector filters the carbon powder for a long time, the filter holes of the filter screen will be blocked, resulting in a decrease in the filtering effect of the filter screen, so that the carbon powder cannot be collected normally, reducing the efficiency of the device. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that when the filter screen filters carbon powder for a long time, the filter holes of the filter screen will be blocked, resulting in a decrease in the filtering effect of the filter screen.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a dust removal and temperature reduction device for a slip ring of a hydro-generator, including a motor main shaft and a slip ring body. The outer wall of the motor main shaft fixedly penetrates the slip ring body, and further includes a dust-proof shell for covering the slip ring body and a dust removal box for collecting and cleaning carbon powder.

[0007] Blowing components for blowing are arranged on both sides of the dust-proof shell; an exhaust port for connecting an external exhaust pipe is opened at the upper end of the dust removal box, and an air inlet communicated with the dust removal box through a dust suction hose is opened at one side of the lower end of the dust removal box; a filter plate is arranged in the dust removal box, a motor two is fixedly arranged on an outer wall of one side of the dust removal box, a screw rod penetrating through the side wall of the dust removal box is fixedly arranged on an output shaft of the motor two, and a movable plate capable of moving left and right is arranged on the screw rod; a brush plate contacting the filter plate is arranged on an upper surface of the movable plate, and a collection drawer is slidably arranged in the dust removal box below the filter plate.

[0008] Further, the blowing component includes a pair of hollow columns communicating with the dust removal shell and symmetrically arranged on both sides of the dust removal shell. The opposite sides of the hollow columns are fixedly connected by bolts with mounting plates, the opposite sides of the mounting plates are fixedly connected with a motor one, a rotating rod is fixedly arranged on an output shaft of the motor one, and a fan is fixedly arranged at one end of the rotating rod away from the motor one.

[0009] Further, the dust-proof housing includes a dust-proof ring through which the motor main shaft passes, and a pair of cover plates respectively arranged at both ends of the dust-proof ring; a plurality of suspension rods pass through between the cover plates and are fixed to the cover plates by nuts.

[0010] Further, a sealing ring is arranged between the cover plate and the motor main shaft.

[0011] Further, inside the dust removal box, above the filter plate, it is divided into a secondary filtration chamber and a buffer chamber from bottom to top by a hollow partition board. The exhaust port is arranged on the side wall of the buffer chamber. A plurality of detachable filter cartridges are arranged on the lower surface of the hollow partition board, and the filter cartridges communicate with the inside of the hollow partition board. An air outlet is opened on the upper surface of the hollow partition board.

[0012] Further, a negative pressure fan is arranged in the buffer chamber, and the suction port of the negative pressure fan is connected to the air outlet.

[0013] Further, a group of limiting members are symmetrically arranged on the inner side walls of both sides of the dust removal box. The limiting members include a pair of limiting blocks arranged up and down, and the filter plate is limited between the limiting blocks.

[0014] Further, a maintenance window is opened on the front surface of the dust removal box, and the maintenance window is detachably connected with a maintenance board by bolts.

[0015] Further, the maintenance board has an observation board for observing the state of the bottom of the filter plate and the collection drawer.

[0016] Compared with the prior art, the present invention can regularly clean the filter plate by setting a pull-out filter plate and a moving plate structure with a brush plate, prevent the filter holes of the filter plate from being blocked by carbon powder, thereby effectively maintaining the filtering effect of the filter screen and ensuring the continuous and stable operation of the dust collector; by directly pulling out the sliding collection drawer, it is convenient to clean the collected carbon powder and other dust, and the dust can be removed without complex operations, improving the convenience of equipment maintenance; by setting the operation of the fan at the dust-proof outer shell, the slip ring body is cooled by air, preventing the slip ring from generating too much heat during long-term operation and affecting its performance and service life.

[0017] Description of the drawings

[0018] Figure 1 is the overall structural schematic diagram of the present invention;

[0019] Figure 2 is the sectional structural schematic diagram of the dust-proof housing and the blowing assembly of the present invention;

[0020] Figure 3 is the front sectional structural schematic diagram of the dust removal box of the present invention.

[0021] In the figure: 1 - motor main shaft; 2 - dust removal box; 3 - collector ring body; 4 - dust-proof ring; 5 - cover plate; 6 - suspension rod; 7 - nut; 8 - dust suction ring; 9 - connecting pipe; 10 - intake pipe; 11 - exhaust pipe; 12 - dust suction hose; 13 - sealing ring; 14 - hollow column; 15 - mounting plate; 16 - motor one; 17 - rotating rod; 18 - fan; 19 - hollow partition board; 20 - negative pressure fan; 21 - filter cartridge; 22 - limit block; 23 - filter plate; 24 - collection drawer; 25 - motor two; 26 - screw rod; 27 - side plate; 28 - moving plate; 29 - brush plate; 30 - maintenance plate; 31 - observation plate; 32 - secondary filtration chamber; 33 - buffer chamber; 34 - air outlet. Detailed implementation mode

[0022] The technical solution of the present invention will be further described below in conjunction with specific embodiments. It should be understood that the following embodiments are only for illustrative and explanatory purposes of the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies implemented based on the above content of the present invention are covered within the scope of protection intended by the present invention.

[0023] Refer to Figures 1 - 3 , a collector ring dust removal and temperature reduction device for a hydrogenerator, including a motor main shaft 1 and a collector ring body 2. The outer wall of the motor main shaft 2 fixedly penetrates through the collector ring body 3. It also includes a dust-proof shell for covering the collector ring body 3 and a dust removal box 2 for collecting and cleaning carbon powder;

[0024] Blowing components for blowing are arranged on both sides of the dust-proof shell; an exhaust port for connecting an external exhaust pipe 11 is opened at the upper end of the dust removal box 2, and an air inlet communicated with the dust removal box 2 through a dust suction hose 12 is opened at one side of the lower end of the dust removal box 2; a filter plate 23 is arranged in the dust removal box 2, a motor two 25 is fixedly arranged on the outer wall of one side of the dust removal box 2, a screw rod 26 penetrating through the side wall of the dust removal box is fixed on the output shaft of the motor two 25, and a movable plate 28 that can move left and right is arranged on the screw rod 26; a brush plate 29 in contact with the filter plate is arranged on the upper surface of the movable plate 28, and a collection drawer 24 is slidably arranged in the dust removal box 1 below the filter plate 23;

[0025] The exhaust port is connected to an external negative pressure machine through an exhaust pipe 11. During operation, the main shaft 1 of the motor drives the collector ring body 3 to rotate. Multiple carbon brushes on the outer side of the collector ring body 3 maintain contact with the collector ring body 3 through spring pressure to conduct current. Dust will be generated during this operation process. The suction force of the external negative pressure machine sucks the dust in the dust-proof shell into the bottom of the dust removal box 2 through the dust suction hose 12. The dust is filtered under the filter screen, and the gas is discharged through the exhaust pipe 11 by passing through the filter plate 23; the moving plate 28 moves left and right along the screw rod 26. Thus, the brush plate 29 on the upper surface of the moving plate 28 contacts and rubs against the filter plate 23 through the bristles, brushing off the dust attached to the lower surface of the filter plate 23 and falling into the collection drawer 24 below. The staff only needs to regularly pull out the collection drawer 24 for cleaning, and at the same time regularly maintain the filter cartridge 21 to keep the device in good filtering performance.

[0026] In one embodiment, referring to Figure 2 , one end of the screw rod 26 away from the motor two 25 is rotatably connected to the dust removal box 2 through a side plate 27 provided on the right inner side wall of the dust removal box 2, and the rear surface of the moving plate 28 is slidably connected to the inner rear surface of the dust removal box 2; when it is necessary to clean the inside of the dust removal box 2, start the motor two 25 to drive the screw rod 26 to rotate. Since the screw rod 26 is threadedly connected to the moving plate 28, and the rear surface of the moving plate 28 is slidably connected to the inner rear surface of the dust removal box 2, restricting the rotation of the moving plate 28, the rotation of the screw rod 26 will cause the moving plate 28 to move in a horizontal straight line along the axial direction of the screw rod 26. Thus, the brush plate 29 on the upper surface of the moving plate 28 will move along with the movement of the moving plate 28. During the movement, through the friction between the bristles of the brush plate 29 and the filter plate 23, the dust attached to the lower surface of the filter plate 23 is brushed off. As the moving plate 28 continuously moves back and forth left and right, the brush plate 29 comprehensively cleans the lower surface of the filter plate 23, causing the dust to break away from the filter plate 23 and fall into the collection drawer 24 below, thereby increasing the filtering efficiency of the device, without the need to shut down the machine to clean the filter plate 23, achieving an improvement in work efficiency.

[0027] In one embodiment, referring to Figure 1 , the air inlet is connected to an inlet pipe 11, and a connecting pipe 9 communicates with the lower end of the dust-proof shell. One end of the dust suction hose 12 is connected to the inlet pipe 11, and the other end is connected to the connecting pipe 9, realizing a firm connection between the lower end of the dust-proof shell and the bottom of the dust removal box 2.

[0028] Referring to Figure 2, the blowing component includes a pair of hollow columns 14 that communicate with the dust removal housing 4 and are symmetrically arranged on both sides of the dust removal housing 4. The opposite sides of the hollow columns 14 are fixedly connected with mounting plates 15 by bolts. The opposite sides of the mounting plates 15 are fixedly connected with a first motor 16. The output shaft of the first motor 16 is fixedly connected with a rotating rod 17. A fan 18 is fixed at one end of the rotating rod 17 away from the first motor 16. The first motor 16 drives the rotating rod 17 to rotate, and then the rotating rod 17 drives the fan 18 to rotate at a high speed inside the hollow column 14. The rotation of the fan 18 makes the air flow rapidly. The flowing air can exchange heat with the heated slip ring body 3 to take away the heat and achieve cooling, that is, continuously perform dust removal and cooling operations on the slip ring of the hydrogenerator, and maintain the slip ring body 3 working in a relatively clean and suitable temperature environment.

[0029] Please continue to refer to Figure 2 , the dust-proof housing includes a dust-proof ring 4 that penetrates the motor main shaft 1 and a pair of cover plates 5 respectively arranged at both ends of the dust-proof ring 4. A plurality of suspension rods 6 penetrate between the cover plates 5 and are fixed on the cover plates 5 by nuts 7. The suspension rods 6 are threadedly connected by nuts 7 located on the opposite sides of the two cover plates 5 to realize the locking and fixing of the cover plates 5 and the dust-proof ring 4.

[0030] In the above embodiment, refer to Figure 1 or Figure 2 , a dust suction ring 8 is further arranged between the dust-proof ring 4 and the cover plate at the lower end of the dust removal ring. The outer diameter of the dust suction ring 8 is larger than the inner diameter of the dust removal ring 4. The connecting pipe 9 is communicated with the dust-proof housing through the dust suction ring 8; to facilitate the discharge of dust in the dust removal housing.

[0031] Please continue to refer to Figure 2 , a sealing ring 13 is arranged between the cover plate 5 and the motor main shaft 1; to prevent external dust from entering the interior of the dust-proof housing from the connection between the motor main shaft 1 and the cover plate 5, and avoid external dust from polluting and damaging the slip ring body 3, thereby further improving the dust-proof protection effect on the slip ring body 3.

[0032] Refer to Figure 3, inside the dust removal box 2, above the filter plate 23, it is divided into a secondary filtration chamber 32 and a buffer chamber 33 from bottom to top by a hollow partition plate 19. The exhaust port is arranged on the side wall of the buffer chamber 33. The lower surface of the hollow partition plate 19 is provided with a plurality of detachable filter cartridges 21, and the filter cartridges 21 communicate with the inside of the hollow partition plate 19. An air outlet 34 is opened on the upper surface of the hollow partition plate 19; the exhaust port is connected to an external negative pressure machine through an exhaust pipe 11. During operation, under the action of negative pressure, dust is sucked into the dust removal box 2. The dust entering the dust removal box 2 will first pass through the filter plate 23 for preliminary filtration. Some larger dust particles will be filtered by the filter plate 23 and directly fall into the collection drawer 24 for storage. And some fine dust particles will continue to rise with the air flow, and then the plurality of filter cartridges 21 provided will further filter the fine dust.

[0033] Please continue to refer to Figure 3 , a negative pressure fan 20 is arranged in the buffer chamber 33, and the air inlet of the negative pressure fan 20 is connected to the air outlet; the negative pressure fan 20 is directly arranged in the buffer chamber 33 to improve the air flow rate and efficiency.

[0034] Please continue to refer to Figure 3 , a group of limiting members are symmetrically arranged on the inner walls on both sides of the dust removal box 2. The limiting members include a pair of limiting blocks 22 arranged up and down, and the filter plate 23 is limited between the limiting blocks 22; the filter plate 23 is clamped by the limiting blocks 22 to ensure the stability of its position, and at the same time, the filter plate 23 can be freely extracted and replaced, which is more convenient.

[0035] Refer to Figure 1 , a maintenance window is opened on the front surface of the dust removal box 2, and a maintenance plate 30 is detachably connected to the maintenance window by bolts; for easy disassembly and maintenance.

[0036] Please continue to refer to Figure 1 , the maintenance plate 30 has an observation plate 31 for observing the state of the bottom of the filter plate and the collection drawer.

[0037] During operation, the motor spindle drives the collector ring body to rotate. Multiple carbon brushes on the outer side of the collector ring body maintain contact with the collector ring body through spring pressure to conduct current. Dust is generated during the operation of the device. The suction force of the negative pressure fan sucks the dust around the collector ring body into the dust suction ring. The dust enters the intake pipe through the connecting pipe and the dust suction hose, and then enters the dust removal box. The dust entering the dust removal box will first be preliminarily filtered by the filter plate. Some larger dust particles will be filtered by the filter plate and directly fall into the collection drawer for storage. Some fine dust particles will continue to rise with the air flow. Then, multiple filter cartridges provided will further filter the fine dust. Since the screw is threadedly connected to the moving plate, and the rear surface of the moving plate is slidably connected to the inner rear surface of the dust removal box, the rotation of the moving plate is restricted. The moving plate moves left and right along the screw. Thus, the brush plate on the upper surface of the moving plate contacts and rubs the filter plate through the bristles, brushing off the dust attached to the lower surface of the filter plate and falling into the collection drawer below. The staff only needs to regularly pull out the collection drawer for cleaning, and at the same time regularly maintain the filter cartridges to keep the device in good filtering performance.

[0038] Although the specific embodiments of the present invention have been described above, those skilled in the art of this technology should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present invention. Effective modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered by the scope protected by the claims of the present invention.

Claims

1. A dust removal and cooling device for a collector ring of a hydro-turbine generator, comprising a motor main shaft and a collector ring body, wherein the collector ring body is fixedly penetrated through the outer wall of the motor main shaft, and characterized in that: It also includes a dustproof shell for covering the collector ring body and a dust removal box for collecting and cleaning carbon powder; Blowing components for blowing air are arranged on both sides of the dustproof shell; an exhaust port for connecting to an external exhaust pipe is arranged at the upper end of the dust removal box, and an air inlet connected to the dust removal box through a dust suction hose is arranged on one side of the lower end of the dust removal box; a filter plate is arranged in the dust removal box, a motor 2 is fixed to an outer wall of one side of the dust removal box, a screw rod penetrating the side wall of the dust removal box is fixed to the output shaft of the motor 2, and a movable plate that can move left and right is arranged on the screw rod; a brush plate in contact with the filter plate is arranged on the upper surface of the movable plate, and a collection drawer is slidably arranged in the dust removal box below the filter plate.

2. A dust removal and cooling device for collector rings of a hydro-generator according to claim 1, characterized in that: The blowing assembly includes a pair of hollow columns connected to the dust removal shell and symmetrically arranged on both sides of the dust removal shell, the opposite sides of the hollow columns are fixedly connected to mounting plates by bolts, the opposite side of the mounting plate is fixedly connected to motor 1, the output shaft of motor 1 is fixedly connected to a rotating rod, and a fan is fixed to the end of the rotating rod away from motor 1.

3. A dust removal and cooling device for collector rings of a hydro-turbine generator according to claim 1, characterized in that: The dustproof shell includes a dustproof ring passing through the motor main shaft and a pair of cover plates respectively arranged at both ends of the dustproof ring; a plurality of suspension rods pass through between the cover plates and are fixed to the cover plates by nuts.

4. A dust removal and cooling device for collector rings of a hydro-turbine generator according to claim 3, characterized in that: A sealing ring is arranged between the cover plate and the motor main shaft.

5. The dust removal and cooling device for collector ring of a hydro-turbine generator according to claim 1, characterized in that: The dust removal box is located above the filter plate and is divided from bottom to top into a secondary filter chamber and a buffer chamber by a hollow partition. The exhaust port is arranged on the side wall of the buffer chamber. A plurality of detachable filter cartridges are arranged on the lower surface of the hollow partition, and the filter cartridges are connected to the interior of the hollow partition. An air outlet is provided on the upper surface of the hollow partition.

6. A dust removal and cooling device for collector rings of a hydro-turbine generator according to claim 5, characterized in that: A negative pressure fan is arranged in the buffer chamber, and an air intake port of the negative pressure fan is connected to the air outlet.

7. The dust removal and cooling device for collector ring of a hydro-turbine generator according to claim 1, characterized in that: A group of limiting members are symmetrically arranged on the inner walls of both sides of the dust removal box. The limiting members include a pair of limiting blocks arranged up and down, and the filter plate is limited between the limiting blocks.

8. The dust removal and cooling device for collector ring of a hydro-turbine generator according to claim 1, characterized in that: An inspection window is provided on the front surface of the dust removal box, and an inspection plate is detachably connected to the inspection window through bolts.

9. The dust removal and cooling device for collector ring of a hydro-turbine generator according to claim 1, characterized in that: The inspection panel has an observation panel for observing the status of the bottom of the filter plate and the collection drawer.

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