Generator excitation brush monitoring system

Abstract

The invention provides a generator excitation brush monitoring system, which relates to the technical field of electric conduction, and comprises a generator rotor, the generator rotor is fixedly connected with a bearing in a rear cover of a motor shell and a plurality of collecting rings, the plurality of collecting rings are in one-to-one correspondence contact with a plurality of brushes, and the contact ends of the collecting rings and the brushes are correspondingly provided with brush monitoring mechanisms. A plurality of electric brushes are connected with an electric brush box, an electric brush control mechanism is installed in the electric brush box, an electric brush monitoring mechanism is installed outside the electric brush box, the electric brush box is installed in a motor shell rear cover, and the electric brush monitoring mechanism is used for monitoring the temperature of the contact ends of the collecting ring and the electric brushes. The electric brush control mechanism can automatically replace a new electric brush, so that the temperature of the contact end of the collecting ring and the electric brush is monitored, the length of the electric brush is always in a target range, manual inspection is not needed, and the purpose of ensuring normal operation of equipment through unmanned monitoring of the length and the temperature of the electric brush is achieved.

Description

Technical Field

[0001] The invention relates to the field of conductive technology, in particular to a generator excitation brush monitoring system. Background Art

[0002] During the normal operation of the generator set in the power plant, the monitoring of the generator collector ring brush can only be carried out by the operating personnel through on-site inspections, using carbon rods and point temperature. The generator slip ring chamber is noisy and the main shaft speed is 3000 rpm, which poses certain safety risks to the inspection personnel. At the same time, the brushes and collector rings are devices for energy exchange in the excitation system. They are in a position of dynamic and static contact and dynamic and static junction, and are easily affected by mechanical and electrical factors, resulting in heating of brushes and collector ring components and wear of brushes, which can cause abnormal shutdown of the unit or grid fluctuations.

[0003] Therefore, a generator collector ring brush monitoring device is proposed to ensure normal operation of the device through unmanned monitoring of the brush length and temperature. Summary of the invention

[0004] The present invention provides a generator excitation brush monitoring system, which is used to solve the above-mentioned technical problem of ensuring normal operation of equipment through unmanned monitoring of brush length and temperature.

[0005] In order to solve the above technical problems, the present invention discloses a generator excitation brush monitoring system, including a generator rotor, the generator rotor is fixedly connected to the bearing and a plurality of collector rings in the rear cover of the motor housing, the plurality of collector rings are in one-to-one contact with a plurality of brushes, the contact ends of the collector rings and the brushes are correspondingly provided with brush monitoring mechanisms, the plurality of brushes are connected to a brush box, a brush control mechanism is installed in the brush box, a brush monitoring mechanism is installed outside the brush box, and the brush box is installed in the rear cover of the motor housing.

[0006] Preferably, the number of the plurality of slip rings and the number of the plurality of brushes are both two.

[0007] Preferably, the brush monitoring mechanism includes two thermal imagers, which are symmetrically arranged at the left and right ends of the brush box, and the two slip rings and the two brushes are located between the thermal imagers on the left and right sides, and the thermal imagers are arranged corresponding to the contact ends of the slip rings and the brushes.

[0008] Preferably, the installation cavities are symmetrically arranged on the left and right sides of the brush box, and a brush assembly is movably arranged in the installation cavity. The brush assembly includes a mounting block, which is movably connected to the installation cavity, and the mounting block is fixedly connected to the brush. A sliding groove 1 is provided at one end of the installation block away from the brush, and a sliding block 1 is slidably arranged in the sliding groove 1, and the sliding block 1 is fixedly connected to the sliding block 2, and a spring 1 is fixedly arranged between the sliding block 2 and the installation block, and a spring set is arranged on the sliding block 1, and the sliding block 2 is movably connected to the installation cavity.

[0009] Preferably, the brush control mechanism includes a brush replacement assembly, which includes a replacement chamber 1 that runs through the middle of the brush box, a removal outlet is provided at the upper end of the rear cover of the motor housing, the removal outlet is connected to the replacement chamber 1, and replacement ports are symmetrically provided at the left and right ends of the replacement chamber 1, and the replacement chamber 1 is connected to the installation chamber through the replacement port.

[0010] Preferably, a replacement cavity 2 is symmetrically provided on the left and right sides of the interior of the brush box, the replacement cavity 2 is connected to the installation cavity, a sliding plate 1 is slidably provided in the replacement cavity 2, a plurality of damping rods 1 are fixedly provided between the sliding plate 1 and the replacement cavity 2, and one end of the sliding plate 1 away from the damping rod 1 is in contact with the spare brush assembly.

[0011] Preferably, the brush replacement assembly further comprises a sliding groove 2 connected to the front end of the installation cavity, the sliding groove 2 is connected and arranged between the replacement cavity 2 and the replacement port, a rack 3 is slidably arranged in the sliding groove 2, a cavity 1 and a cavity 2 are arranged inside the front side of the brush box, the cavity 1 and the cavity 2 are distributed up and down, a sealing plate is slidably arranged in the cavity 1, a spring rod is fixedly arranged between the lower end of the cavity 1 and the lower end of the sealing plate, a connecting block 1 is respectively arranged at the upper and lower ends of the sealing plate, and the lower connecting block 1 penetrates the lower end of the cavity 1 into the cavity 2 and is in contact with the inclination of the contact block 1 The inclined ends are in corresponding contact, contact block 1 is fixedly connected to damping rod 2, the fixed end of damping rod 2 is fixedly connected to cavity 2, the movable end of damping rod 2 is in corresponding contact with contact block 2, contact block 2 is slidably connected to the slide groove, and spring 2 is fixedly arranged between contact block 2 and the slide groove, a rack 1 is arranged at the rear end of the upper connecting block 1, rack 1 is meshed with gear 1, gear 1 is rotatably arranged in connecting hole 1, gear 1 is meshed with rack 3, rack 3 is in contact with the upper end of sliding block 2, and the connecting hole 1 is connected between cavity 1 and sliding groove 2.

[0012] Preferably, the outlet of cavity one is connected with the inlet through a connecting channel, and the inlet is connected with cavity three, and the connecting channel is arranged inside the brush box, and a sliding plate two is slidably provided in cavity three, and the sliding plate two is fixedly connected with the connecting block two, and the connecting block two passes through the lower end of cavity three to enter cavity four and is fixedly connected with the connecting block three, and both cavity three and cavity four are arranged inside the rear side of the brush box, and cavity three and cavity four are distributed up and down, and the connecting block three is slidably connected with cavity four, and the connecting block three is fixedly connected with the rack two, and the rack two is meshed with the gear two, and the gear two is rotatably arranged in the connecting hole two, and the connecting hole two is connected and arranged between the cavity four and the mounting cavity, and the gear two is meshed with the rack three at the rear end of the mounting block.

[0013] Preferably, the brush control mechanism further includes a suspension mechanism, which includes a heat transfer block, the heat transfer block contacts the rear end of the mounting block, the heat transfer block contacts the heat transfer tube, and the heat transfer tube is connected to the upper side of the cavity three.

[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the brush box of the present invention;

[0018] Figure 3 It is a schematic diagram of the side structure of the brush box of the present invention.

[0019] In the figure: 1. Generator rotor; 2. Motor housing rear cover; 3. Spring 2; 4. Damper rod 1; 5. Bearing; 6. Heat transfer tube; 7. Collector ring; 8. Thermal imager; 9. Removal port; 10. Brush box; 11. Replacement chamber 2; 12. Brush; 13. Mounting block; 14. Inlet; 15. Sliding plate 2; 16. Sliding plate 1; 17. Contact block 2; 18. Spring 1; 19. Sliding block 1; 20. Replacement port; 21. Replacement chamber 1 ; 22. Installation cavity; 23. Sliding block 2; 24. Sliding groove 1; 25. Rack 3; 26. Gear 1; 27. Connecting block 1; 28. Sliding groove 2; 29. ​​Exit; 30. Cavity 1; 31. Sealing plate; 32. Cavity 2; 33. Damping rod 2; 34. Contact block 1; 35. Connecting block 2; 36. Connecting hole 2; 37. Heat transfer block; 38. Gear 2; 39. Cavity 4; 40. Rack 2; 41. Connecting block 3. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] The present invention provides the following embodiments

[0023] Example 1

[0024] The embodiment of the present invention provides a generator excitation brush monitoring system, such as Figure 1 As shown, it includes a generator rotor 1, which is fixedly connected to a bearing 5 and a plurality of collector rings 7 in a rear cover 2 of a motor housing. The plurality of collector rings 7 are in one-to-one contact with a plurality of brushes 12. Contact ends of the collector rings 7 and the brushes 12 are provided with brush monitoring mechanisms respectively. The plurality of brushes 12 are connected to a brush box 10. A brush control mechanism is installed in the brush box 10. A brush monitoring mechanism is installed outside the brush box 10. The brush box 10 is installed in the rear cover 2 of the motor housing.

[0025] The beneficial effects of the above technical solution are:

[0026] The brush monitoring mechanism is used to monitor the temperature at the contact end of the collector ring 7 and the brush 12. When the brush 12 is worn and its length is shortened to the replacement length, the brush control mechanism can automatically replace the new brush 12, thereby ensuring that the temperature at the contact end of the collector ring 7 and the brush 12 and the length of the brush 12 are always within the target range. No manual inspection is required, which achieves the purpose of ensuring the normal operation of the equipment through unmanned monitoring of the brush length and temperature. No manual inspection is required, which reduces the safety risk of the inspectors. It also allows the inspectors to cooperate with manual inspections again after remotely understanding the conditions of the contact ends of the collector ring 7 and the brush 12, thereby achieving the purpose of dual monitoring.

[0027] Example 2

[0028] On the basis of Example 1, Figure 1-Figure 3 As shown, the number of the plurality of collector rings 7 and the number of the plurality of brushes 12 are both two;

[0029] The brush monitoring mechanism includes two thermal imagers 8, which are symmetrically arranged at the left and right ends of the brush box 10, and the two slip rings 7 and the two brushes 12 are located between the thermal imagers 8 on the left and right sides, and the thermal imagers 8 are arranged correspondingly to the contact ends of the slip rings 7 and the brushes 12.

[0030] The beneficial effects of the above technical solution are:

[0031] The two collector rings 7 are in one-to-one contact with the two brushes 12 to form two contact ends. The two thermal imagers 8 are respectively used to monitor the temperature of the two contact ends. The thermal imager 8 can be connected to an external alarm through a controller. After the thermal imager 8 monitors that the temperature between the collector ring 7 and the contact end of the brush 12 exceeds the target value, the thermal imager 8 controls the alarm through the controller to alarm the inspection personnel, reminding them that the temperature of the contact end of the collector ring 7 and the brush 12 is too high and that maintenance should be carried out in time.

[0032] Example 3

[0033] On the basis of Example 2, Figure 1-Figure 3 As shown, the installation cavity 22 is symmetrically arranged on the left and right sides of the brush box 10, and the installation cavity 22 is movably provided with a brush assembly, and the brush assembly includes a mounting block 13, the mounting block 13 is movably connected with the installation cavity 22, the mounting block 13 is fixedly connected with the brush 12, and a sliding groove 24 is arranged at one end of the mounting block 13 away from the brush 12, a sliding block 19 is slidably arranged in the sliding groove 24, the sliding block 19 is fixedly connected with the sliding block 23, and a spring 18 is fixedly arranged between the sliding block 23 and the installation block 13, the spring 18 is sleeved on the sliding block 19, and the sliding block 23 is movably connected with the installation cavity 22;

[0034] The brush control mechanism includes a brush replacement assembly, which includes a replacement cavity 21 that is set through the middle of the brush box 10, a take-out port 9 is set at the upper end of the motor housing rear cover 2, and the take-out port 9 is connected with the replacement cavity 21. The left and right ends of the replacement cavity 21 are symmetrically provided with replacement ports 20, and the replacement cavity 21 is connected with the installation cavity 22 through the replacement port 20;

[0035] A second replacement cavity 11 is symmetrically provided on the left and right sides of the interior of the brush box 10. The second replacement cavity 11 is connected to the installation cavity 22. A sliding plate 16 is slidably provided in the second replacement cavity 11. A plurality of damping rods 4 are fixedly provided between the sliding plate 16 and the second replacement cavity 11. One end of the sliding plate 16 away from the damping rod 4 contacts with the spare brush assembly.

[0036] The beneficial effects of the above technical solution are:

[0037] After the length of the brush 12 is worn, the spring 18 in the compressed state pushes the mounting block 13 to move toward the collector ring 7 to ensure that the brush 12 can maintain contact with the collector ring 7 after being worn. After the length of the brush 12 is worn to the target length, the damping rod 4 in the compressed state pushes the sliding plate 16 to slide along the replacement cavity 11 under the elastic action of the damping rod 4. The sliding plate 16 pushes the worn brush assembly from the replacement port 20 into the replacement cavity 21, and then pushes the new brush assembly into the mounting cavity 22, so that the new brush 12 contacts the collector ring 7, completing the automatic replacement of the brush 12. The staff takes out the worn brush assembly in the replacement cavity 21 during inspection, and a removal port 9 is provided at the upper end of the rear cover 2 of the motor housing to facilitate the removal of the worn brush assembly.

[0038] Example 4

[0039] On the basis of Example 3, Figure 1-Figure 3As shown, the brush replacement assembly also includes a sliding groove 28 connected to the front end of the installation cavity 22, the sliding groove 28 is connected and arranged between the replacement cavity 21 and the replacement port 20, a rack 3 25 is slidably arranged in the sliding groove 28, a cavity 1 30 and a cavity 2 32 are arranged inside the front side of the brush box 10, the cavity 1 30 and the cavity 2 32 are distributed up and down, a sealing plate 31 is slidably arranged in the cavity 1 30, a spring rod is fixed between the lower end of the cavity 1 30 and the lower end of the sealing plate 31, and the upper and lower ends of the sealing plate 31 are respectively provided with connecting blocks 1 27, and the lower connecting block 1 27 passes through the lower end of the cavity 1 30 into the cavity 2 32 and is connected with the contact block 1 The inclined end of 34 contacts correspondingly, the contact block 1 34 is fixedly connected with the damping rod 2 33, the fixed end of the damping rod 2 33 is fixedly connected with the cavity 2 32, the movable end of the damping rod 2 33 contacts correspondingly with the contact block 2 17, the contact block 2 17 is slidably connected with the slide groove, and a spring 23 is fixedly arranged between the contact block 2 17 and the slide groove, the rear end of the upper connecting block 1 27 is provided with a rack 1, the rack 1 is meshed with the gear 1 26, the gear 1 26 is rotatably arranged in the connecting hole 1, the gear 1 26 is meshed with the rack 3 25, the rack 3 25 contacts with the upper end of the sliding block 23, and the connecting hole 1 is connected between the cavity 1 30 and the sliding groove 28;

[0040] The outlet 29 of the cavity 1 30 is connected with the inlet 14 through a connecting passage, and the inlet 14 is connected with the cavity 3. The connecting passage is arranged inside the brush box 10. The sliding plate 2 15 is slidably arranged in the cavity 3. The sliding plate 2 15 is fixedly connected with the connecting block 2 35. The connecting block 2 35 passes through the lower end of the cavity 3 and enters the cavity 4 39 and is fixedly connected with the connecting block 3 41. The cavity 3 and the cavity 4 39 are both arranged inside the rear side of the brush box 10, and the cavity 3 and the cavity 4 39 are distributed up and down. The connecting block 3 41 is slidably connected with the cavity 4 39. The connecting block 3 41 is fixedly connected with the rack 2 40. The rack 2 40 is meshed with the gear 2 38. The gear 2 38 is rotatably arranged in the connecting hole 2 36. The connecting hole 2 36 is arranged between the cavity 4 39 and the mounting cavity 22. The gear 2 38 is meshed with the rack 3 at the rear end of the mounting block 13.

[0041] The brush control mechanism also includes a suspension mechanism, which includes a heat transfer block 37, which contacts the rear end of the mounting block 13, and the heat transfer block 37 contacts the heat transfer tube 6, which is connected to the upper side of the cavity three.

[0042] The beneficial effects of the above technical solution are:

[0043] After the length of the brush 12 is worn to a certain position and reaches the replacement length, the spring 18 pushes the contact block 2 17 to disengage from the movable end of the damping rod 2 33. Under the elastic action of the damping rod 2 33 in the compressed state, the movable end of the damping rod 2 33 extends into the installation cavity 22. The telescopic stroke of the movable end of the damping rod 2 33 does not exceed the length of the slide groove along the front-to-back direction. During this process, the damping rod 2 33 drives the contact block 1 34 to slide along the cavity 2 32. The inclined end of the contact block 1 34 contacts the lower connecting block 1 27, pushing the lower connecting block 1 27 to move upward. The lower connecting block 1 27 pushes the sealing plate 31 to slide upward along the cavity 1 30. The sealing plate 31 drives the upper connecting block 1 27 to move upward. When the connecting block 1 27 on the upper side moves, it drives the gear 1 26 to rotate. When the gear 1 26 rotates, it drives the rack 3 25 to move downward. When the rack 3 25 moves downward, it pushes the sliding block 23 to slide downward along the installation cavity 22. At the same time, when the sealing plate 31 moves upward, the spring rod is deformed, and the air pressure in the enclosed space between the upper end of the sealing plate 31 and the upper end of the cavity 1 30 increases, so that it is sent into the cavity 3 through the outlet 29, the connecting channel and the inlet 14, pushing the sliding plate 2 15 to slide downward along the cavity 3. The sliding plate 2 15 drives the connecting block 3 41 to move through the connecting block 2 35, and the connecting block 3 41 drives the rack 2 40 to move. The rack 2 40 drives the gear 2 38 to rotate. When the gear 2 38 rotates, it drives the installation The rear end of the block 13 moves upward, and the installation block 13 drives the brush 12 to move upward into the installation cavity 22. In this process, since the damping rod 23 is located at the upper end of the contact block 21, the spring 23 is compressed, and after the damping rod 23 stops moving, the sliding block 23 is at the lower side of the replacement port 20, and the brush 12 is at the upper side of the replacement port 20. At this time, under the elastic action of the damping rod 14, the sliding plate 16 pushes the worn brush assembly from the replacement port 20 into the replacement cavity 121. The number of replacement cavities 121 can be two. At this time, the replacement port 20 is not set at the end of the replacement cavity 121 that is close to each other, which is used to accommodate the worn brush assemblies on the left and right sides respectively, and then the new brush assembly is pushed into the installation cavity 22. When it is actually in Under the elastic action of the spring 18 in the compressed state, the brush 12 contacts the collector ring 7, and the upper end of the sliding block 23 contacts the rack 3 25. The setting of the sliding groove 1 24 and the sliding block 19 makes the movement between the mounting block 13 and the sliding block 23 have a guiding effect, so that the two form a whole. In the process of pushing the new brush assembly into the installation cavity 22, the contact block 2 17 in the new brush assembly moves, pushing the damping rod 2 33 to compress and return to its original position. The end of the damping rod 2 33 close to the replacement cavity 2 11 is an inclined end, so as to prevent the damping rod 2 33 from limiting the movement of the new brush assembly. The setting of the spring rod makes the sealing plate 31 return to its original position, and finally the rack 3 25 returns to its original position through the gear 1 26.

[0044] The heat transfer block 37 is set so that when the temperature of the brush 12 is too high and reaches the target value, the heat is transferred to the heat transfer block 37 through the mounting block 13. The mounting block 13 is also made of heat transfer material. The transferred heat is transferred to the cavity three through the heat transfer tube 6. The air pressure in the cavity three increases, pushing the sliding plate 2 15 downward, causing the mounting block 13 to move upward, and the brush 12 and the collector ring 7 automatically break contact to dissipate heat, thereby avoiding excessive heat of the brush 12 and the collector ring 7.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A generator excitation brush monitoring system, Features: The invention comprises a generator rotor (1), wherein the generator rotor (1) is fixedly connected to a bearing (5) and a plurality of collector rings (7) in a rear cover (2) of a motor housing, wherein the plurality of collector rings (7) are in one-to-one contact with a plurality of brushes (12), and contact ends of the collector rings (7) and the brushes (12) are provided with brush monitoring mechanisms respectively, wherein the plurality of brushes (12) are connected to a brush box (10), wherein a brush control mechanism is installed in the brush box (10), and a brush monitoring mechanism is installed outside the brush box (10), and the brush box (10) is installed in the rear cover (2) of the motor housing.

2. A generator excitation brush monitoring system according to claim 1, Features: The number of the plurality of collector rings (7) and the number of the plurality of brushes (12) are both two.

3. A generator excitation brush monitoring system according to claim 2, Features: The brush monitoring mechanism comprises two thermal imagers (8), the two thermal imagers (8) are symmetrically arranged at the left and right ends of the brush box (10), the two collector rings (7) and the two brushes (12) are located between the thermal imagers (8) on the left and right sides, and the thermal imagers (8) are arranged correspondingly to the contact ends of the collector rings (7) and the brushes (12).

4. A generator excitation brush monitoring system according to claim 1, Features: The brush box (10) has mounting cavities (22) symmetrically arranged on the left and right sides. A brush assembly is movably arranged in the mounting cavity (22). The brush assembly comprises a mounting block (13). The mounting block (13) is movably connected to the mounting cavity (22). The mounting block (13) is fixedly connected to the brush (12). A sliding groove (24) is arranged at one end of the mounting block (13) away from the brush (12). A sliding block (19) is slidably arranged in the sliding groove (24). The sliding block (19) is fixedly connected to a sliding block (23). A spring (18) is fixedly arranged between the sliding block (23) and the mounting block (13). The spring (18) is sleeved on the sliding block (19). The sliding block (23) is movably connected to the mounting cavity (22).

5. A generator excitation brush monitoring system according to claim 4, Features: The brush control mechanism comprises a brush replacement assembly, which comprises a replacement cavity (21) penetrating the middle of a brush box (10), a take-out port (9) being provided at the upper end of a motor housing rear cover (2), the take-out port (9) being connected to the replacement cavity (21), replacement ports (20) being symmetrically provided at the left and right ends of the replacement cavity (21), and the replacement cavity (21) being connected to the installation cavity (22) through the replacement port (20).

6. A generator excitation brush monitoring system according to claim 5, Features: A second replacement cavity (11) is symmetrically arranged on both left and right sides of the interior of the brush box (10), the second replacement cavity (11) is communicated with the installation cavity (22), a sliding plate (16) is slidably arranged in the second replacement cavity (11), a plurality of damping rods (4) are fixedly arranged between the sliding plate (16) and the second replacement cavity (11), and one end of the sliding plate (16) away from the damping rod (4) contacts with a spare brush assembly.

7. A generator excitation brush monitoring system according to claim 4, Features: The brush replacement assembly also includes a sliding groove 2 (28) connected to the front end of the installation cavity (22), the sliding groove 2 (28) is connected and arranged between the replacement cavity 2 (11) and the replacement port (20), a rack 3 (25) is slidably arranged in the sliding groove 2 (28), a cavity 1 (30) and a cavity 2 (32) are arranged inside the front side of the brush box (10), the cavity 1 (30) and the cavity 2 (32) are distributed up and down, a sealing plate (31) is slidably arranged in the cavity 1 (30), a spring rod is fixedly arranged between the lower end of the cavity 1 (30) and the lower end of the sealing plate (31), and a connecting block 1 (27) is respectively arranged at the upper and lower ends of the sealing plate (31), and the lower connecting block 1 (27) penetrates the lower end of the cavity 1 (30) into the cavity 2 (32) and is connected to the contact block The inclined end of one (34) contacts correspondingly, the contact block one (34) is fixedly connected to the damping rod two (33), the fixed end of the damping rod two (33) is fixedly connected to the cavity two (32), the movable end of the damping rod two (33) contacts correspondingly with the contact block two (17), the contact block two (17) is slidably connected to the slide groove, and a spring two (3) is fixedly arranged between the contact block two (17) and the slide groove, the rear end of the upper connecting block one (27) is provided with a rack one, the rack one is meshed with the gear one (26), the gear one (26) is rotatably arranged in the connecting hole one, the gear one (26) is meshed with the rack three (25), the rack three (25) contacts the upper end of the sliding block two (23), and the connecting hole one is connected between the cavity one (30) and the sliding groove two (28).

8. A generator excitation brush monitoring system according to claim 7, Features: The outlet (29) of the cavity 1 (30) is connected to the inlet (14) through a connecting channel, and the inlet (14) is connected to the cavity 3. The connecting channel is arranged inside the brush box (10). The cavity 3 is slidably provided with a sliding plate 2 (15). The sliding plate 2 (15) is fixedly connected to the connecting block 2 (35). The connecting block 2 (35) passes through the lower end of the cavity 3 and enters the cavity 4 (39) and is fixedly connected to the connecting block 3 (41). The cavity 3 and the cavity 4 (39) are both arranged in the brush box (10). ), and the cavity three and cavity four (39) are distributed up and down, the connecting block three (41) is slidably connected to the cavity four (39), the connecting block three (41) is fixedly connected to the rack two (40), the rack two (40) is meshed with the gear two (38), the gear two (38) is rotatably set in the connecting hole two (36), the connecting hole two (36) is connected and set between the cavity four (39) and the installation cavity (22), and the gear two (38) is meshed with the rack three at the rear end of the installation block (13).

9. A generator excitation brush monitoring system according to claim 8, Features: The brush control mechanism also includes a suspension mechanism, which includes a heat transfer block (37), the heat transfer block (37) contacts the rear end of the mounting block (13), the heat transfer block (37) contacts the heat transfer tube (6), and the heat transfer tube (6) is connected to the upper side of the cavity three.

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