Generator carbon brush chamber purging device

Abstract

The utility model discloses a generator carbon brush chamber purging device, comprising a generator set comprising a motor body, a rotor slip ring and a carbon brush assembly, the motor body is provided with a carbon brush chamber, the rotor slip ring is rotatably arranged in the carbon brush chamber, and the carbon brush assembly is arranged in the carbon brush chamber. The carbon brush assembly is arranged in the carbon brush chamber and is in contact with the outer surface of the rotor slip ring; the purging module comprises a fan assembly, a main air inlet pipe, purging air pipes and an exhaust pipe, the periphery of the carbon brush assembly is provided with at least two purging air pipes which are arranged at intervals in the circumferential direction, and an air outlet of each purging air pipe faces the contact face of the carbon brush assembly and the rotor slip ring; each blowing air pipe is communicated with an air supply outlet of the fan assembly through the main air inlet pipe, and the air inlet end of the exhaust pipe is communicated with the carbon brush chamber. According to the blowing device for the carbon brush chamber of the generator, the contact surface of the rotor slip ring and the carbon brush assembly can be blown, cleaned and maintained at multiple angles.

Description

TECHNICAL FIELD

[0001] The utility model relates to generator technology field especially relates to a generator carbon brush room purging device. BACKGROUND

[0002] The inside of the generator carbon brush room mainly has carbon brush and rotor slip ring two part equipment compositions. The carbon brush is the device of the transmission of electric energy between the rotation and static in the generator, ensures the direct current after the rectification of excitation rectifier to be transmitted to the rotating rotor slip ring through the carbon brush, to produce the continuous rotation magnetic field for the rotor of the generator. For the generator, the carbon brush and rotor slip ring are both a weak link, and are the key components.

[0003] The existing generator carbon brush and rotor slip ring often have the following faults in the use process:

[0004] 1. Carbon brush dirt, carbon brush dirt is easy to occur after the long time operation of the brush holder, carbon brush is easy to jam, cannot move freely, carbon brush and slip ring contact badly, uneven current distribution occurs, thereby leading to the heating and firing phenomenon, and the serious time will lead to the ring fire of the generator slip ring, burns the slip ring and causes the loss of magnetism and is forced to stop;

[0005] 2. Dust, oil dirt or carbon powder at the rotor slip ring, will cause the decrease of the insulation performance of the generator rotor;

[0006] 3. The downtime of the generator is relatively long, and the insulation resistance of the rotor is reduced below the allowable value due to the damp. SUMMARY

[0007] The utility model aims at solving one of the problems in the prior art at least to some extent, and therefore proposes a generator carbon brush room purging device, which can realize multi-angle purging and cleaning maintenance of the contact surface of the rotor slip ring and the carbon brush assembly, and is helpful to the safe and stable long time operation of the generator set.

[0008] According to the above-mentioned generator carbon brush room purging device, the following technical scheme is adopted:

[0009] The generator carbon brush room blowing device comprises: a generator set comprising a motor body, a rotor slip ring and a carbon brush assembly, a carbon brush room is arranged on the motor body, the rotor slip ring is rotatably arranged in the carbon brush room, and the carbon brush assembly is arranged in the carbon brush room and in contact with the outer surface of the rotor slip ring; a blowing module comprising a fan assembly, a main air inlet pipe, blowing air pipes and an air exhaust pipe, at least two blowing air pipes are arranged on the periphery of the carbon brush assembly in a circumferential direction, the air outlet of each blowing air pipe is directed to the contact surface of the carbon brush assembly and the rotor slip ring, each blowing air pipe is connected to the air outlet of the fan assembly through the main air inlet pipe, and the air inlet of the air exhaust pipe is connected to the carbon brush room; and a control module electrically connected to the motor body and the fan assembly.

[0010] In some embodiments, an arc-shaped nozzle is connected to the air outlet of the blowing air pipe, the arc-shaped nozzle is arranged on the periphery of the carbon brush of the carbon brush assembly, a plurality of spray holes are arranged on the arc-shaped nozzle, and the air outlet direction of each spray hole is directed to the contact surface of the carbon brush assembly and the rotor slip ring.

[0011] In some embodiments, an air filter is arranged at the air inlet of the fan assembly, the air outlet of the air exhaust pipe is connected to the air inlet of the fan assembly through the air filter; or the air outlet of the air exhaust pipe is connected to the external atmosphere, an air filter is arranged at the air outlet of the air exhaust pipe, and an air exhaust fan electrically connected to the control assembly is arranged.

[0012] In some embodiments, a pressure sensor for detecting air pressure is arranged on the air filter, and the pressure sensor is electrically connected to the control assembly.

[0013] In some embodiments, a water vapor separator is arranged on the main air inlet pipe.

[0014] In some embodiments, a temperature sensor and / or a humidity sensor are arranged in the carbon brush room, the temperature sensor is electrically connected to the control assembly and used for detecting the temperature of the contact surface, and the humidity sensor is electrically connected to the control assembly and used for detecting the humidity in the carbon brush room.

[0015] In some embodiments, an observation port is arranged on the motor body and connected to the carbon brush room, and an observation window for opening or closing the observation port is arranged at the observation port.

[0016] In some embodiments, at least one first heater electrically connected to the control assembly is arranged in the carbon brush room; and / or a second heater electrically connected to the control assembly is arranged on the main air inlet pipe.

[0017] In some embodiments, at least one water absorption component for adsorbing water molecules is arranged in the carbon brush chamber, and the first heater is arranged on the water absorption component.

[0018] Compared with the prior art, the utility model has at least the following beneficial effects:

[0019] 1.The generator carbon brush chamber blowing device, by setting at least two blowing pipes arranged in a circumferential direction at intervals outside the carbon brush assembly, the air outlet of each blowing pipe faces the contact surface of the carbon brush assembly and the rotor slip ring, so as to realize blowing and cleaning maintenance of the contact surface of the rotor slip ring and the carbon brush assembly from multiple angles, which is helpful for safe and stable long-time operation of the generator set.

[0020] 2.The water vapor separator is arranged on the main air inlet pipe to reduce the water content of the blowing air, thereby reducing the probability of moisture on the surface of the rotor slip ring.

[0021] 3.By arranging at least one first heater in the carbon brush chamber and / or a second heater on the main air inlet pipe, the rotor slip ring can be heated and dried by the first heater and / or the second heater, thereby preventing the surface of the rotor slip ring from being wet. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structure diagram of the generator carbon brush chamber blowing device in the embodiment 1 of the utility model. Figure 1 ;

[0023] Figure 2 is a structure diagram of the generator carbon brush chamber blowing device in the embodiment 1 of the utility model. Figure 2 ;

[0024] Figure 3 is a structure diagram of the generator carbon brush chamber blowing device in the embodiment 2 of the utility model.

[0025] Figure 4 is a structure diagram of the generator carbon brush chamber blowing device in the embodiment 3 of the utility model.

[0026] Figure 5 is a structure diagram of the generator carbon brush chamber blowing device in the embodiment 4 of the utility model.

[0027] Figure 6 is a structure diagram of the generator carbon brush chamber blowing device in the embodiment 5 of the utility model.

[0028] In the figure: 11-motor body, 111-carbon brush chamber, 12-rotor slip ring, 13-carbon brush assembly, 14-observation window; 20-cabinet body, 21-fan assembly, 221-main air inlet pipe, 222-purge air pipe, 223-arc-shaped air jet pipe, 23-exhaust pipe, 24-air filter, 25-water vapor separator, 26-temperature sensor, 271-first heater, 272-second heater, 28-water absorption assembly; 31-controller, 32-display panel. DETAILED DESCRIPTION

[0029] The following examples are used to illustrate the present application, but the present application is not limited to these examples. Modifications to the specific embodiments of the present application or equivalent substitutions of some technical features are made without departing from the spirit of the present application, which should be covered in the technical solution range claimed by the present application.

[0030] Example 1

[0031] Reference Figures 1-2 The present embodiment provides a generator carbon brush chamber purging device, comprising a generator set, a purging module and a control module, wherein the generator set comprises a motor body 11, a rotor slip ring 12 and a carbon brush assembly 13, a carbon brush chamber 111 is arranged on the motor body 11, the rotor slip ring 12 is rotatably arranged in the carbon brush chamber 111, and the carbon brush assembly 13 is arranged in the carbon brush chamber 111 and in contact with the outer surface of the rotor slip ring 12.

[0032] The purging module comprises a cabinet body 20, a fan assembly 21, a main air inlet pipe 221, a purge air pipe 222 and an exhaust pipe 223, at least two purge air pipes 222 are arranged at the periphery of the carbon brush assembly 13 in a circumferential direction, the air outlets of each purge air pipe 222 are directed towards the contact surface of the carbon brush assembly 13 and the rotor slip ring 12, so as to achieve purging from multiple angles, thereby achieving the effect of purging and cleaning maintenance of the rotor slip ring 13 and the carbon brush assembly 13, thereby helping the generator set to run safely, stably and for a long time. The fan assembly 21 is arranged in the cabinet body 20, the air inlet of the fan assembly 21 is connected to each purge air pipe 222 through the main air inlet pipe 221, and the fan assembly 21 is used to blow the purge air to the air outlet of the purge air pipe 222. The air inlet end of the exhaust pipe 223 is connected to the carbon brush chamber 111, and is used to suck out the carbon powder and dust purged out.

[0033] The control module is electrically connected with the motor body 11 and the fan assembly 21 respectively, and is used for controlling the fan assembly 21 to work continuously or intermittently, so as to realize continuous sweeping or timed blowing. The fan assembly 21 has at least three working gears of large, medium and small, so that the product has three blowing air volume selections of large, medium and small. In the embodiment, the control module comprises a controller 31 and a display panel 32. The controller 31 is electrically connected with the motor body 11 and the fan assembly 21 respectively, and the display panel 32 is arranged on the cabinet 20 and is electrically connected with the controller.

[0034] In the embodiment, the carbon brush assembly 13 comprises a brush holder and a carbon brush. The carbon brush is installed in the carbon brush chamber through the brush holder, and the carbon brush is in contact with the outer surface of the rotor slip ring 12. Further, an observation port is arranged on the motor body 11 and is in communication with the carbon brush chamber 111. An observation window 14 is arranged at the observation port and is used for opening or closing the observation port, so as to facilitate observation of the working condition inside the carbon brush chamber 111 and facilitate adjustment of the pressure and position of the carbon brush by the staff.

[0035] In the embodiment, the fan assembly comprises a high-speed large-air-volume centrifugal fan. The working power of the centrifugal fan is 600W, and the outlet pressure of the blowing air is 4-6KG, which meets the blowing air flow, negative pressure and continuous and stable dust collection effect required by the field working condition.

[0036] Reference Figure 2 An air filter 24 is arranged at the air suction port of the fan assembly 21 and is detachably connected with the fan assembly 21. The air filter 24 has a cleanliness level of 100, a filtering efficiency of 99.99% (0.3μm), and a filtering level of U15, which can effectively filter fine particles and oil stains and is convenient to maintain and replace. In the embodiment, the air outlet end of the air suction pipe 223 is connected with the air suction port of the fan assembly 21 through the air filter 24, so that the air suction pipe 223 shares one fan assembly with the main air inlet pipe 221, which is beneficial to reduce the cost. In other embodiments, the air outlet end of the air suction pipe 223 can be designed to be in communication with the external atmosphere, and an air filter 24 and an air suction fan electrically connected with the control assembly are arranged at the air outlet end of the air suction pipe 223. In this way, the blowing air and the suction air are independent of each other. When any one of the fan assembly 21 and the air suction fan fails, the other one can still maintain the blowing function of the product.

[0037] Further, a pressure sensor (not shown in the figure) for detecting the air pressure is arranged on the air filter 24, and the pressure sensor is electrically connected with the control assembly. In the embodiment, the number of the pressure sensors is two, and the two pressure sensors are arranged at the inlet and outlet of the air filter 24 respectively. In this way, when the air filter 24 is seriously contaminated to cause a large air pressure differential, the generator carbon brush chamber purging device will report an “air filter differential pressure is large” alarm to remind the operator to check and replace the air filter 24 in time.

[0038] Reference Figure 1 A temperature sensor 26 and / or a humidity sensor are arranged in the carbon brush chamber 111, the temperature sensor 26 is electrically connected with the control assembly and is used for detecting the temperature of the contact surface. When the temperature exceeds 80 degrees, the device will report a “rotor slip ring and carbon brush temperature is high” alarm to notify the operator to observe in time and open the observation window 14 of the carbon brush chamber 111 to adjust the carbon brush pressure and position; when the temperature exceeds 100 degrees, the device will report a “rotor slip ring and carbon brush temperature is high” alarm to notify the operator to prepare for emergency shutdown.

[0039] The humidity sensor is electrically connected with the control assembly and is used for detecting the humidity in the carbon brush chamber 111. When the humidity in the carbon brush chamber 111 is detected to be high, the device will report a “carbon brush chamber humidity is high” alarm to notify the operator to dehumidify the carbon brush chamber in time to prevent the rotor from being damp.

[0040] Reference Figure 1 At least one first heater 271 electrically connected with the control assembly is arranged in the carbon brush chamber 111. In the embodiment, the number of the first heaters 271 is two, and the two first heaters 271 are arranged at intervals. Each first heater 271 has a power of 150 W and is used for heating and drying the rotor slip ring 12 in the carbon brush chamber 111. When the generator set is stopped for a long time or the humidity in the carbon brush chamber of the generator set is high, the control module controls the first heater 271 to work for a period of time to heat and dry the rotor of the generator.

[0041] Embodiment 2

[0042] Reference Figure 3 The difference between the embodiment and the embodiment 1 is that an arc-shaped nozzle 223 is connected to the air outlet of each purging air pipe 222, the arc-shaped nozzle 223 is arranged along the outer periphery of the carbon brush assembly 13, and a plurality of spray holes are arranged on the arc-shaped nozzle 223, and the air outlet directions of the plurality of spray holes are all towards the contact surface of the carbon brush assembly 13 and the rotor slip ring 12. In this way, by cooperating the plurality of arc-shaped nozzles 223 and the fan assembly 21, the contact surface of the carbon brush and the rotor slip ring 12 can be swept in all directions, and the cleaning efficiency is improved. At this time, the working power or working gear of the fan assembly can be correspondingly reduced.

[0043] Embodiment 3

[0044] Reference Figure 4 The difference between the embodiment and the embodiment 1 or 2 is that a water vapor separator 25 is arranged on the main air inlet pipe 221, and the water vapor separator 25 is used for water vapor separation of the purge air flowing therethrough, so as to reduce the water content of the purge air, and then facilitate to reduce the probability of the rotor slip ring surface being wetted.

[0045] Embodiment 4

[0046] Reference Figure 5 The difference between the embodiment and the embodiment 1 or 2 or 3 is that a second heater 272 is arranged on the main air inlet pipe 221 and electrically connected with the control assembly, and the second heater 272 is used for heating the purge air, so that the air blowing to the contact surface is hot air. In the embodiment, the first heater 272 as described in the embodiment 1 can be omitted or not omitted.

[0047] When the generator set is stopped for a long time or the humidity of the carbon brush chamber of the generator set is high, the control module controls the fan assembly 21 and the second heater 272 to work for a period of time, so as to clean the contact surface and heat and dry the rotor of the generator at the same time, so as to prevent the rotor from being wetted.

[0048] Embodiment 5

[0049] Reference Figure 6 The difference between the embodiment and the embodiment 1 or 2 or 3 is that at least one water absorption assembly 28 for absorbing water molecules is arranged in the carbon brush chamber 111, and the first heater 271 is arranged on the water absorption assembly 28. Therefore, the carbon brush chamber 111 can be dehumidified by the at least one water absorption assembly 28, and the rotor is prevented from being wetted. When the water absorption of the water absorption assembly 28 reaches the saturation degree or at the time, the first heater 271 is controlled to work, so as to dry the water absorption of the water absorption assembly 28 and restore to the initial state.

[0050] The above only describes some embodiments of the utility model. For ordinary skilled in the art, without departing from the utility model creates the concept, can make a number of deformation and improvement, these all belong to the protection scope of the utility model.

Claims

1. A generator carbon brush chamber purging device, characterized in that, include: A generator set includes a motor body (11), a rotor slip ring (12), and a carbon brush assembly (13). A carbon brush chamber (111) is provided on the motor body (11). The rotor slip ring (12) is rotatably disposed in the carbon brush chamber (111). The carbon brush assembly (13) is disposed in the carbon brush chamber (111) and contacts the outer surface of the rotor slip ring (12). The purging module includes a blower assembly (21), a main air inlet duct (221), a purging duct (222), and an exhaust duct (223). At least two purging ducts (222) are arranged circumferentially around the carbon brush assembly (13). The outlet of each purging duct (222) faces the contact surface between the carbon brush assembly (13) and the rotor slip ring (12). Each purging duct (222) is connected to the air outlet of the blower assembly (21) via the main air inlet duct (221). The inlet end of the exhaust duct (223) is connected to the carbon brush chamber (111). The control module is electrically connected to the motor body (11) and the fan assembly (21), respectively.

2. The generator carbon brush chamber purging device according to claim 1, characterized in that, An arc-shaped nozzle (223) is connected to the air outlet of the purge duct (222). The arc-shaped nozzle (223) is arranged around the carbon brush of the carbon brush assembly (13). Multiple nozzle holes are provided on the arc-shaped nozzle (223), and the air outlet direction of the multiple nozzle holes is towards the contact surface between the carbon brush assembly (13) and the rotor slip ring (12).

3. The generator carbon brush chamber purging device according to claim 1, characterized in that, An air filter (24) is provided at the air intake of the fan assembly (21), and the air outlet of the exhaust pipe (223) is connected to the air intake of the fan assembly (21) through the air filter (24); or The exhaust pipe (223) is connected to the outside atmosphere at its outlet end. An air filter (24) and an exhaust fan electrically connected to the control component are provided on the exhaust pipe (223) at its outlet end.

4. The generator carbon brush chamber purging device according to claim 3, characterized in that, The air filter (24) is provided with a pressure sensor for detecting wind pressure, and the pressure sensor is electrically connected to the control component.

5. The generator carbon brush chamber purging device according to claim 1, characterized in that, A water vapor separator (25) is provided on the main air inlet pipe (221).

6. The generator carbon brush chamber purging device according to claim 1, characterized in that, A temperature sensor (26) and / or a humidity sensor are provided in the carbon brush chamber (111). The temperature sensor (26) is electrically connected to the control component and is used to detect the temperature of the contact surface. The humidity sensor is electrically connected to the control component and is used to detect the humidity in the carbon brush chamber (111).

7. A generator carbon brush chamber purging device according to any one of claims 1-6, characterized in that, An observation port connected to the carbon brush chamber (111) is provided on the motor body (11), and an observation window (14) for opening or closing the observation port is provided at the observation port.

8. A generator carbon brush chamber purging device according to any one of claims 1-6, characterized in that, At least one first heater (271) electrically connected to the control component is provided in the carbon brush chamber (111); and / or a second heater (272) electrically connected to the control component is provided on the main air inlet duct (221).

9. A generator carbon brush chamber purging device according to claim 8, characterized in that, The carbon brush chamber (111) is provided with at least one water-absorbing component (28) for adsorbing water molecules, and the first heater (271) is provided on the water-absorbing component (28).

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