Current collection device for reducing ignition phenomenon of collector ring carbon brush

Abstract

The utility model relates to the technical field of electrical engineering. The current collection device comprises a current collection assembly, a supporting assembly, a carbon brush, a brush holder, a carbon powder collection assembly and a noise reduction assembly, the current collection assembly is arranged on the supporting assembly, the carbon brush is arranged on the brush holder, and the current collection assembly is in contact connection with the carbon brush and forms a closed space with the brush holder; the carbon powder collecting assembly is communicated with the closed space, and the noise reduction assembly is arranged on the carbon powder collecting assembly, so that carbon powder can be effectively collected and discharged, accumulation of the carbon powder in the device is avoided, and the problems that according to an existing current collecting device, the carbon powder is prone to being accumulated on the surface of a current collecting ring, surface roughening of a carbon brush is intensified in the rotating process of the current collecting ring, and noise is reduced are solved. And therefore, the sparking phenomenon is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of electrical engineering technology, and more specifically, to a current collection device that reduces arcing of the carbon brush in the current collection ring. Background Technology

[0002] As a key piece of equipment in the power system, the stable operation of generators is crucial for ensuring power supply. The generator's current collector, a vital component, is responsible for supplying excitation current to the rotating generator rotor. Among these components, carbon brushes, acting as the dynamic and static contact points for energy exchange, together with slip rings, form a crucial transmission channel for the generator's excitation voltage and current, and are also key contact parts between the rotating and stationary components of the unit. During the operation of the current collector, carbon brush arcing is a common problem. This arcing not only causes burn marks and roughening on the slip ring surface but also scratches, severe wear, and a large accumulation of carbon dust on the carbon brush surface. Simultaneously, the temperature of the slip rings and carbon brushes increases, further accelerating wear and aging. More seriously, carbon brush arcing can easily spread, and prolonged arcing can lead to generator rotor grounding faults, ultimately causing generator shutdown and posing a serious threat to the stable operation of the unit.

[0003] In existing technologies, the brush holder and the toner collection device cannot form a closed space, which is not conducive to collecting worn toner. Toner tends to accumulate on the surface of the slip ring, and the rotation of the slip ring will exacerbate the surface roughening of the carbon brush, thereby accelerating the occurrence of arcing. Utility Model Content

[0004] The purpose of this invention is to provide a current collector device that reduces the sparking phenomenon of carbon brushes in the current collector ring. It aims to solve the problem that carbon powder in existing current collector devices tends to accumulate on the surface of the current collector ring, and the surface roughening of the carbon brush is aggravated during the rotation of the current collector ring, thereby accelerating the occurrence of sparking.

[0005] This utility model is achieved through the following technical solution:

[0006] A current collection device for reducing arcing of the carbon brush in the current collection ring includes: a current collection component, a support component, a carbon brush, a brush holder, a toner collection component, and a noise reduction component. The current collection component is disposed on the support component, the carbon brush is disposed on the brush holder, the current collection component is in contact with the carbon brush and forms a closed space with the brush holder, the toner collection component is in communication with the closed space, and the noise reduction component is disposed on the toner collection component.

[0007] Optionally, the current collector assembly is provided with a carbon brush contact surface, which contacts the carbon brush.

[0008] Optionally, the carbon brush contact surface is provided with threaded grooves.

[0009] Optionally, there are several threaded grooves, which are spaced apart on the carbon brush contact surface.

[0010] Optionally, a rounded chamfer is provided at the connection between the threaded groove and the carbon brush contact surface.

[0011] Optionally, the current collector assembly is a current collector ring.

[0012] Optionally, the collector ring includes an upper half ring and a lower half ring, which are respectively disposed on the upper and lower parts of the support assembly, and both the upper half ring and the lower half ring are in contact with the carbon brush.

[0013] Optionally, the brush holder is provided with a brush handle, and the carbon brush is movably connected to the brush handle.

[0014] Optionally, the toner collection assembly is provided with an exhaust assembly, which is in communication with the toner collection assembly.

[0015] Optionally, it also includes a flow guiding component, the two ends of which are respectively connected to the enclosed space and the collection component.

[0016] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0017] Significantly reduces carbon brush sparking: By optimizing the contact design between the current collector and the carbon brush, especially by setting a carbon brush contact surface with threaded grooves on the current collector, not only is the contact area increased and conductivity improved, but carbon powder can also be effectively collected to prevent sparking caused by carbon powder accumulation. At the same time, the design of the current guiding component ensures that carbon powder can be collected and discharged efficiently, further reducing the risk of sparking.

[0018] Reduce noise pollution: The introduction of noise reduction components effectively absorbs the noise generated by the exhaust fan during operation, and the installation of sound-absorbing nets or cotton at the exhaust port further reduces the propagation of noise, greatly reducing the noise level generated by the entire power collection device during operation and effectively controlling noise pollution to the surrounding environment.

[0019] Improved current collection efficiency and stability: The design of the brush holder and brush grip ensures good contact between the carbon brush and the current collection assembly. The constant pressure provided by the spring mechanism makes the current transmission more uniform and stable, which helps to improve current collection efficiency and reduce failures caused by poor contact.

[0020] Enhanced maintainability and lifespan: The design of the toner collection assembly enables effective collection and discharge of toner, preventing toner accumulation inside the device and reducing malfunctions and maintenance costs caused by toner contamination. At the same time, the rounded chamfer at the connection between the threaded groove and the carbon brush contact surface reduces carbon brush rubbing and wear, extending the lifespan of the current collection assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the current collection device for reducing arcing of the carbon brush in the current collection ring provided in Embodiment 1 of this utility model.

[0022] Figure 2 A top view of a partial structural diagram of the current collection device for reducing arcing of the carbon brush in the current collection ring, provided in Embodiment 1 of this utility model.

[0023] Figure 3 This is a partially enlarged structural diagram of the current collection device for reducing arcing of the carbon brush in the current collection ring, provided in Embodiment 1 of this utility model.

[0024] Figure 4 This is a schematic cross-sectional view of the current collector assembly provided in Embodiment 2 of this utility model.

[0025] Icons: 1-Current collector assembly, 101-Carbon brush contact surface, 102-Threaded groove, 103-Rounded chamfer, 2-Support assembly, 3-Carbon brush, 4-Brush holder, 5-Flow guide assembly, 6-Carbon powder collection assembly, 7-Exhaust assembly, 8-Brush holder, 9-Noise reduction assembly. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Example 1

[0028] Reference Figure 1 , Figure 2 , Figure 3A current collection device for reducing carbon brush arcing in the current collection ring includes: a current collection component 1, a support component 2, a carbon brush 3, a brush holder 4, a toner collection component 6, and a noise reduction component 9. The current collection component 1 is mounted on the support component 2, and the carbon brush 3 is mounted on the brush holder 4. The current collection component 1 is in contact with the carbon brush 3 and forms a closed space with the brush holder 4. This closed space helps prevent toner splashing and reduce noise, and also helps with toner collection and processing. The toner collection component 6 is connected to the closed space, and the noise reduction component 9 is mounted on the toner collection component 6.

[0029] In this embodiment, the noise reduction component 9 mainly comprises two parts: a noise reduction enclosure and sound-absorbing material. The noise reduction enclosure can be installed on the toner collection component 6 to form a closed soundproof space. The sound-absorbing material is filled around the inner wall of the noise reduction enclosure to absorb and reduce the propagation of noise. The sound-absorbing material can be a porous sound-absorbing material (such as mineral wool, glass wool, foam plastic, etc.) or a resonant sound-absorbing material (such as a thin-plate resonant sound-absorbing structure, etc.). The porous sound-absorbing material installed around the inner wall of the noise reduction enclosure can effectively absorb the noise generated during the operation of the exhaust fan. The outer shell of the noise reduction enclosure can be made of durable materials such as metal or plastic. The shape and size of the enclosure should be customized according to the actual situation of the toner collection component 6 to ensure that it can be tightly installed on the toner collection component and form an effective soundproof space.

[0030] In this embodiment, one or more layers of sound-absorbing mesh or sound-absorbing cotton can be installed at the exhaust port of the noise reduction box to further reduce the propagation of noise. This can effectively absorb and disperse the noise generated during exhaust, and reduce the noise level emitted into the atmosphere to a minimum.

[0031] In this embodiment, the current collector 1 can be a current collector ring, and the support component 2 is made of insulating material. The current collector ring can include an upper half ring and a lower half ring, which are respectively disposed on the upper and lower parts of the support component 2. Both the upper half ring and the lower half ring are in contact with the carbon brush 3, ensuring that the current collector 1 can remain stable during rotation, while avoiding electrical connection between the upper half ring and the lower half ring.

[0032] In this embodiment, a brush holder 8 is provided on the brush holder 4, and the carbon brush 3 is movably connected to the brush holder 8. The brush holder 4 can be a metal ring with good conductivity to ensure that it can effectively transmit current. The choice of metal material takes into account its strength, conductivity and corrosion resistance, and copper, aluminum or stainless steel can be used. The brush holder 8 is firmly fixed on the brush holder 4 to support and position the carbon brush 3. The carbon brush 3 can move flexibly inside the brush holder 8 while maintaining good contact between the carbon brush 3 and the current collector 1. This can be achieved by setting a spring mechanism inside the brush holder 8, which provides constant pressure to keep the carbon brush 3 in close contact with the current collector 1. The number and position of the carbon brush 3 are determined according to the size of the current collector 1 and the current requirements to ensure the uniformity and stability of current transmission.

[0033] In this embodiment, an exhaust assembly 7 is provided on the toner collection assembly 6, and the exhaust assembly 7 is connected to the toner collection assembly 6. The toner collection assembly 6 may include a toner collection box, an exhaust fan, a filter, and connecting pipes. The toner collection box is a container with sufficient volume for storing the toner collected from the current collector 1 and the carbon brush 3. The exhaust fan is installed inside or near the toner collection box to generate suction, drawing air containing toner from the enclosed space of the current collector 1 and the carbon brush 3 and delivering it into the toner collection box. The filter is installed at the air inlet or outlet of the exhaust fan to filter out toner particles in the air, ensuring that the air discharged into the atmosphere is clean. The exhaust assembly 7 is installed on the top or side of the toner collection box to discharge the filtered air into the atmosphere.

[0034] This embodiment also includes a flow guiding component 5, with both ends connected to the enclosed space and the collection component 6, respectively. The flow guiding component 5 mainly consists of a flow guiding pipe and a connector. The flow guiding pipe can be a pipe with an appropriate diameter and length, with one end connected to the enclosed space formed by the current collecting component 1, the carbon brush 3, and the brush holder 4, and the other end connected to the toner collection component 6. The connector is used to fix both ends of the flow guiding pipe to the enclosed space and the toner collection box 6, respectively, ensuring the stability and sealing of the connection. The flow guiding pipe and connector can be made of corrosion-resistant, high-temperature-resistant, and high-strength materials to cope with various harsh environments that may occur during operation. Stainless steel, aluminum alloy, or other metal materials, or plastic materials with excellent corrosion resistance can be used. The inner wall of the flow guiding pipe should be smooth and unobstructed to reduce the resistance of the toner during flow. The diameter and length of the flow guiding pipe are rationally designed according to actual needs to ensure that the toner can be collected and discharged efficiently. The connection between the flow guiding component 5 and the enclosed space and toner collection box 6 should have good sealing performance to prevent toner from leaking out from the gaps during the flow guiding process. Sealing materials such as sealing gaskets or sealant can be used at the connection to ensure the tightness and reliability of the connection.

[0035] Example 2

[0036] Based on Example 1, referring to Figure 4 In this embodiment, the current collector assembly 1 is provided with a carbon brush contact surface 101, which contacts the carbon brush 3. The carbon brush contact surface 101 can be made of copper alloy or silver alloy material with good wear resistance and excellent conductivity.

[0037] In this embodiment, a threaded groove 102 is provided on the carbon brush contact surface 101. The depth and width of the threaded groove 102 are reasonably designed according to the material and size of the carbon brush 3 to ensure that carbon powder can be effectively collected while avoiding excessive wear on the carbon brush.

[0038] In this embodiment, there are several threaded grooves 102, which are distributed at intervals on the carbon brush contact surface 101. This not only increases the contact area between the carbon brush 3 and the current collector 1 and improves the conductivity, but also collects carbon powder during the friction process of the carbon brush 3, preventing carbon powder accumulation from causing arcing.

[0039] In this embodiment, a rounded chamfer 103 is provided at the connection between the threaded groove 102 and the carbon brush contact surface 101 to reduce the scraping and wear of the carbon brush 3 during the friction process, thereby improving the service life of the current collector assembly 1.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A current collector device for reducing arcing of the carbon brush in the current collector ring, characterized in that, include: The assembly includes a current collector (1), a support assembly (2), a carbon brush (3), a brush holder (4), a toner collection assembly (6), and a noise reduction assembly (9). The current collector (1) is mounted on the support assembly (2), the carbon brush (3) is mounted on the brush holder (4), the current collector (1) is in contact with the carbon brush (3) and forms a closed space with the brush holder (4), the toner collection assembly (6) is connected to the closed space, and the noise reduction assembly (9) is mounted on the toner collection assembly (6).

2. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in claim 1, characterized in that, The current collector assembly (1) is provided with a carbon brush contact surface (101), which is in contact with the carbon brush (3).

3. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in claim 2, characterized in that, The carbon brush contact surface (101) is provided with a threaded groove (102).

4. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in claim 3, characterized in that, There are several threaded grooves (102), and the several threaded grooves (102) are distributed at intervals on the carbon brush contact surface (101).

5. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in claim 3, characterized in that, A rounded chamfer (103) is provided at the connection between the threaded groove (102) and the carbon brush contact surface (101).

6. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in claim 1, characterized in that, The current collector assembly (1) is a current collector ring.

7. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in claim 6, characterized in that, The collector ring includes an upper half ring and a lower half ring, which are respectively disposed on the upper and lower parts of the support assembly (2). Both the upper half ring and the lower half ring are in contact with the carbon brush (3).

8. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in claim 1, characterized in that, The brush holder (4) is provided with a brush handle (8), and the carbon brush (3) is movably connected to the brush handle (8).

9. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in claim 1, characterized in that, The toner collection component (6) is provided with an exhaust component (7), which is connected to the toner collection component (6).

10. The current collection device for reducing arcing of the carbon brush in the current collection ring as described in any one of claims 1-9, characterized in that, It also includes a flow guiding component (5), the two ends of which are connected to the enclosed space and the toner collection component (6), respectively.

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