A carbon dust collecting device for a generator

Abstract

The application discloses a generator carbon powder collecting device, which comprises a current collecting ring, a brush holder and a carbon collecting box. The brush holder is provided with a carbon brush in abutment with the current collecting ring. The brush holder is provided with a heat dissipation air duct. The starting point of the heat dissipation air duct is located directly below the contact point of the current collecting ring and the carbon brush. The outlet of the heat dissipation air duct is provided with a fan. The air duct is provided with a plurality of baffles for blocking the carbon powder to make it fall. The carbon collecting box is arranged in the heat dissipation air duct and used for receiving the carbon powder blocked by the baffles. The collecting device can quickly lead out the heat generated by friction by arranging the starting point of the heat dissipation air duct directly below the contact point of the carbon brush, thereby avoiding local overheating. The fan and the baffles combine to form directional airflow, which can not only dissipate heat but also guide the carbon powder into the carbon collecting box. The integrated carbon collecting box is designed in an integrated manner with the air duct, thereby avoiding secondary flying of the carbon powder to pollute the equipment interior and realizing efficient recovery of the carbon powder. The functions of heat dissipation and collection are integrated, the structure is simplified, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This application relates to the field of hydropower generation technology, and more specifically, to a generator carbon powder collection device. Background Technology

[0002] The carbon dust generated by the friction between the carbon brushes and slip rings of traditional generators is mostly collected by natural scattering or passive collection via guide channels, which has the following drawbacks: (1) Carbon dust is easily diffused by the airflow during rotor rotation, causing internal pollution and short circuit hazards; (2) Existing collection devices are separated from the heat dissipation system, and carbon dust accumulation obstructs the airflow in the heat dissipation duct, exacerbating the temperature rise; (3) The baffle structure is simple, and carbon dust is seriously re-spread. For example, using inclined guide plates to collect carbon dust, but without combining with a forced air cooling system, carbon dust is trapped in the air duct; although multi-stage filters are set, they increase wind resistance and are difficult to clean. Therefore, it is necessary to develop a new type of generator carbon dust collection device. Utility Model Content

[0003] This application provides a generator toner collection device, including a slip ring, a brush holder, and a toner collection box. The brush holder has carbon brushes that abut against the slip ring. A heat dissipation duct is provided inside the brush holder, with its starting end located directly below the contact point between the slip ring and the carbon brushes. A fan is provided at the outlet of the heat dissipation duct. Multiple baffles are provided inside the heat dissipation duct to prevent toner from falling. The toner collection box is located inside the heat dissipation duct to collect the toner blocked by the baffles.

[0004] In some embodiments, the baffle includes a guide section with a parabolic surface on the windward side.

[0005] In some embodiments, the radius of curvature R of the guide section satisfies R = 0.2-0.4 times the duct height.

[0006] In some embodiments, multiple vertically arranged baffles are distributed along the length of the heat dissipation duct to form a continuously folding "S"-shaped airflow channel.

[0007] In some embodiments, the baffle includes a first panel and a second panel, the sides of the first panel and the second panel being fixedly connected to the inner walls of the two sides of the heat dissipation duct respectively; the top of the first panel is fixed to the inner surface of the heat dissipation duct and the bottom is suspended, and the top and bottom of the second panel are both suspended.

[0008] In some embodiments, the carbon collection box is provided with multiple partitions to divide the carbon collection box into multiple partitions, and the partitions are located directly below the second panel.

[0009] In some embodiments, the heat dissipation duct has an L-shaped structure, the duct includes a vertical section and a horizontal section, and the baffle is disposed in the horizontal section.

[0010] In some embodiments, a negative ion emitter is provided inside the heat dissipation duct, and a magnet is provided at the bottom of the carbon collection box, with the N pole of the magnet facing upwards.

[0011] In some embodiments, the brush holder is provided with a slot, and the upper end of the carbon collection box outer plate extends into the slot so that the carbon collection box is snapped onto the brush holder.

[0012] The collection device of this application can quickly dissipate the heat generated by friction by placing the starting end of the heat dissipation air duct directly below the carbon brush contact point, thus avoiding local overheating. The fan and baffle are combined to form a directional airflow, which can both dissipate heat and guide the toner into the carbon collection box. The integrated carbon collection box and air duct are designed in one piece to avoid secondary toner flying and contaminating the inside of the equipment, thus achieving efficient toner recovery. The integrated heat dissipation and collection functions simplify the structure and reduce the maintenance frequency.

[0013] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0015] Figure 1 This is a top view of the overall structure of the embodiment of this application;

[0016] Figure 2 yes Figure 1 Cross-sectional structural diagram of section A of the center line

[0017] Figure 3 yes Figure 2 Enlarged view of section B.

[0018] Explanation of main component symbols: collecting device 100, collector ring 10, brush holder 20, carbon brush 21, card slot 22, carbon collection box 30, partition plate 31, magnet 32, heat dissipation duct 40, fan 41, baffle 42, first panel 421, second panel 422, guide section 423, vertical section 43, horizontal section 44, negative ion emitter 45. Detailed Implementation

[0019] The embodiments of this application will be further described below with reference to the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions throughout.

[0020] Furthermore, the embodiments of this application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting this application.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] Please see Figure 1 and Figure 2 This application discloses a generator toner collection device 100 for collecting toner. The collection device 100 includes a collector ring 10, a brush holder 20, and a toner collection box 30. The brush holder 20 is provided with carbon brushes 21 that abut against the collector ring 10. A heat dissipation duct 40 is provided inside the brush holder 20. The starting end of the heat dissipation duct 40 is located directly below the contact point between the collector ring 10 and the carbon brushes 21. A fan 41 is provided at the outlet of the heat dissipation duct 40. Multiple baffles 42 are provided inside the duct to prevent toner from falling. The toner collection box 30 is located inside the heat dissipation duct 40 to receive the toner blocked by the baffles 42.

[0023] The collection device 100 of this application can quickly dissipate the heat generated by friction by placing the starting end of the heat dissipation air duct 40 directly below the contact point of the carbon brush 21, thus avoiding local overheating. The fan 41 and the baffle 42 are combined to form a directional airflow, which can both dissipate heat and guide the toner into the carbon collection box 30. The integrated carbon collection box 30 and the air duct are designed as a single unit, which avoids secondary toner flying and contaminating the inside of the equipment, and achieves efficient toner recovery. The integrated heat dissipation and collection functions simplify the structure and reduce the maintenance frequency.

[0024] Specifically, the heat dissipation duct 40 has an L-shaped structure, including a vertical section 43 and a horizontal section 44, with a baffle 42 located within the horizontal section 44. Carbon dust formed after the carbon brush 21 brushes against the slip ring 10 falls into the vertical section, and the baffle 42 concentrates it in the horizontal section 44, preventing dust accumulation in the vertical section 43 from clogging the duct. The fan 41 is a centrifugal fan, and its speed is adjusted in conjunction with the generator load to optimize energy consumption and collection efficiency.

[0025] Furthermore, multiple vertically arranged baffles 42 are distributed along the length of the heat dissipation duct 40, forming a continuously zigzagging "S"-shaped airflow channel. The S-shaped channel extends the airflow path, increases the probability of collision between the toner and the baffles 42, and the multi-stage zigzag formation promotes the toner's escape from the airflow due to inertia. In one example, to facilitate toner collection, the upper end of the vertical section 43 is designed as a flared funnel.

[0026] Specifically, the baffle 42 includes a first panel 421 and a second panel 422. The sides of the first panel 421 and the second panel 422 are fixedly connected to the inner walls of the two sides of the heat dissipation duct 40, respectively. The top of the first panel 421 is fixed to the inner wall of the heat dissipation duct 40, while its bottom is suspended. The top and bottom of the second panel 422 are both suspended. The first panel 421 and the second panel 422 are continuously and alternately arranged to form a continuously folding "S"-shaped airflow channel. The staggered layout of the double panels achieves gradual deceleration of the airflow, improving the primary filtration effect of large carbon particles.

[0027] For further information, please refer to [link / reference]. Figure 1 and Figure 2 The baffle 42 includes a guide section 423 with a parabolic curved surface on the windward side. The radius of curvature R of the guide section 423 satisfies R = 0.2-0.4 times the duct height. The parabolic curved surface guide section 423 can reduce airflow separation, lower wind resistance, and improve wind speed stability. At the same time, the curved surface design causes the toner to bounce tangentially after collision, avoiding secondary re-entrainment and improving the collection rate. The curvature parameter (R = 0.2-0.4 times the duct height) verified by fluid simulation balances the toner settling efficiency and wind pressure loss, ensuring smooth airflow direction and reducing turbulent toner escape.

[0028] The carbon collection box 30 is located within the horizontal section 44 of the heat dissipation duct 40. Multiple partitions 31 divide the carbon collection box 30 into multiple zones. The partitions 31 are located directly below the second panel 422. The partitions 31 correspond to the second panel 422, thus stabilizing the airflow distribution within the heat dissipation duct 40.

[0029] A negative ion emitter 45 is installed inside the heat dissipation duct 40, and a magnet 32 ​​is installed at the bottom of the carbon collection box 30, with the N pole of the magnet 32 ​​facing upwards. The negative ion emitter 45 charges the toner, and the magnet 32 ​​causes the toner to adhere to the bottom of the carbon collection box 30, preventing dust from being stirred up. At the same time, the magnet 32 ​​also fixes the carbon collection box 30 inside the brush holder 20. The negative ion emitter 45 causes the surface of the toner to carry a negative charge, which generates an electric field-magnetic field coupling effect with the N-pole-facing magnet 32. The negatively charged toner moves towards the bottom of the carbon collection box 30 under the action of the Lorentz force of the magnetic field, significantly enhancing the adsorption efficiency of fine toner particles.

[0030] Please see Figure 3The brush holder 20 has a slot 22 inside, and the upper end of the outer plate of the carbon collection box 30 extends into the slot 22 so that the carbon collection box 30 is snapped onto the brush holder 20. The slot 22 design enables quick-release installation of the carbon collection box 30, which can be replaced without tools. The upper end of the outer plate is embedded in the slot 22 to form a sealing surface to prevent carbon powder from leaking from the joint.

[0031] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0033] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A generator toner collection device, characterized in that, include: Collector ring; A brush holder is provided with a carbon brush that abuts against the slip ring. A heat dissipation duct is provided inside the brush holder. The starting end of the heat dissipation duct is located directly below the contact point between the slip ring and the carbon brush. A fan is provided at the outlet of the heat dissipation duct. Multiple baffles are provided inside the heat dissipation duct to prevent toner from falling off. A carbon collection box is located inside the heat dissipation duct and is used to collect carbon powder blocked by the baffle.

2. The collecting device according to claim 1, characterized in that, The baffle includes a guide section with a parabolic curved surface on the windward side.

3. The collecting device according to claim 2, characterized in that, The curvature radius R of the guide section satisfies R = 0.2-0.4 times the duct height.

4. The collecting device according to claim 1, characterized in that, Multiple vertically arranged baffles are distributed along the length of the heat dissipation duct to form a continuously folding "S"-shaped airflow channel.

5. The collecting device according to claim 4, characterized in that, The baffle includes a first panel and a second panel. The sides of the first panel and the second panel are fixedly connected to the inner walls of the two sides of the heat dissipation duct, respectively. The top of the first panel is fixed to the inner surface of the heat dissipation duct and the bottom is suspended. The top and bottom of the second panel are both suspended.

6. The collecting device according to claim 5, characterized in that, The carbon collection box is provided with multiple partitions that divide the carbon collection box into multiple sections, and the partitions are located directly below the second panel.

7. The collecting device according to any one of claims 1-6, characterized in that, The heat dissipation duct has an L-shaped structure, and the duct includes a vertical section and a horizontal section, with the baffle located in the horizontal section.

8. The collecting device according to claim 1, characterized in that, A negative ion emitter is installed inside the heat dissipation duct, and a magnet is installed at the bottom of the carbon collection box with the N pole of the magnet facing upwards.

9. The collecting device according to claim 1, characterized in that, The brush holder is provided with a slot, and the upper end of the outer plate of the carbon collection box extends into the slot so that the carbon collection box is snapped onto the brush holder.

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