Generator brush holder cleaning device

Abstract

The application discloses a generator excitation brush holder cleaning device and belongs to the technical field of generators. The generator excitation brush holder cleaning device can insert the column into the carbon brush box while inserting the brush holder into the cleaning cavity from the box opening, and then the back surface of the brush holder is cleaned by the back surface cleaning brush, two side surfaces of the brush holder are cleaned by the two side surface cleaning brushes, and the inner wall of the carbon brush box is cleaned by the inner wall cleaning brush. Meanwhile, the negative pressure cavity forms negative pressure through the negative pressure mechanism, which not only can suck the air in the cleaning cavity, but also can suck the air around the column into the cleaning cavity through the dust suction hole and the inner cavity, and the floating dust is adsorbed by the filter element between the cleaning cavity and the negative pressure cavity. Therefore, the cleaning efficiency of the brush holder is improved, the dust raising is reduced, the cleaning time cost of the brush holder is saved, and efficient cleaning of the brush holder is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of generator technology, in particular to a generator excitation brush holder cleaning device. BACKGROUND

[0002] The process of providing DC current for the generator rotor winding is called excitation, and there are two main excitation methods, namely rotating rectification excitation (brushless excitation) and static rectification excitation (brush excitation). The excitation method of the current large-scale steam turbine generator or hydroelectric generator is static excitation, that is, the rectified DC current is transmitted to the generator rotor winding through the carbon brush and collector ring device.

[0003] During normal operation of the generator, the excitation carbon brush is in a state of dynamic wear, and the carbon powder under wear is sucked into the carbon powder collection device under the action of the collector ring centrifugal fan. In this process, environmental dust is inevitably sucked and contaminated on the excitation brush holder. The dust accumulated in the brush holder will cause the carbon brush to jam, increase the contact resistance of the carbon brush, affect the current distribution, and cause a series of adverse consequences such as sparking.

[0004] The dust on the surface of the carbon brush, the collector ring, the brush holder and the brush holder affects the gap cooperation and heat dissipation between the carbon brush and the brush holder. In order to avoid the uneven current of the excitation carbon brush caused by dirt and thus a series of losses, the excitation device needs to be cleaned regularly. At present, the conventional method for cleaning the excitation brush holder is to manually clean it with a brush. During the cleaning process, there is a lot of dust, low cleaning efficiency, long time-consuming, and the cleaning is not thorough. SUMMARY

[0005] The purpose of the present application is to provide a generator excitation brush holder cleaning device, which improves the cleaning efficiency of the brush holder, reduces dust, saves the cleaning time cost of the brush holder, and realizes efficient cleaning of the brush holder.

[0006] In order to achieve the above purpose, the following technical scheme is provided:

[0007] The generator excitation brush holder cleaning device comprises:

[0008] A box body is provided with a box opening for the brush holder to enter and exit, and a filter is arranged in the box body. The filter separates the inside of the box body into a cleaning cavity and a negative pressure cavity located below the cleaning cavity;

[0009] A negative pressure mechanism is arranged in the box body, and the negative pressure mechanism can form a negative pressure in the negative pressure cavity;

[0010] A panel cleaning structure is arranged in the cleaning cavity, and the panel cleaning structure comprises a back cleaning brush and two side cleaning brushes. The back cleaning brush is used for cleaning the back of the brush holder, and the two side cleaning brushes are used for cleaning the two sides of the brush holder, respectively.

[0011] A plurality of carbon brush box cleaning structures are arranged on the outer side of the box body, and each of the plurality of carbon brush box cleaning structures is arranged in one-to-one correspondence with a carbon brush box of the brush holder; the carbon brush box cleaning structure comprises a column body and an inner wall cleaning brush, the column body can extend into the corresponding carbon brush box, the inner wall cleaning brush is arranged on the column body, the inner wall cleaning brush is used for cleaning the inner wall of the carbon brush box, an inner cavity in communication with the cleaning cavity is arranged in the column body, and a dust suction hole in communication with the inner cavity is arranged on the column body.

[0012] As an optional solution of the generator excitation brush holder cleaning device, the panel cleaning structure further comprises a back surface supporting plate arranged in correspondence with the back surface of the brush holder, the back surface supporting plate is fixedly arranged in the cleaning cavity, and the back surface cleaning brush is fixedly arranged on the back surface supporting plate.

[0013] As an optional solution of the generator excitation brush holder cleaning device, the panel cleaning structure further comprises two side surface supporting plates arranged in one-to-one correspondence with two side surfaces of the brush holder, the two side surface supporting plates are fixedly arranged in the cleaning cavity, and the two side surface cleaning brushes are fixedly arranged on the two side surface supporting plates.

[0014] As an optional solution of the generator excitation brush holder cleaning device, the two side surface supporting plates are each provided with a plurality of side surface cleaning brushes.

[0015] As an optional solution of the generator excitation brush holder cleaning device, the back surface supporting plate is provided with a back plate through hole; and / or,

[0016] The side surface supporting plate is provided with a side plate through hole.

[0017] As an optional solution of the generator excitation brush holder cleaning device, the inner wall cleaning brush is in the form of a ring arranged on the outer side of the column body.

[0018] As an optional solution of the generator excitation brush holder cleaning device, the negative pressure mechanism comprises a vacuum pump connected with the negative pressure cavity.

[0019] As an optional solution of the generator excitation brush holder cleaning device, the negative pressure mechanism further comprises a negative pressure pipeline connected with the vacuum pump, the negative pressure pipeline is arranged in the negative pressure cavity, and the negative pressure pipeline is provided with a plurality of negative pressure through holes in communication with the negative pressure cavity.

[0020] As an optional solution of the generator excitation brush holder cleaning device, the generator excitation brush holder cleaning device further comprises a battery electrically connected with the vacuum pump.

[0021] As an optional solution of the generator excitation brush holder cleaning device, the filter is detachably arranged in the box body.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The generator excitation brush holder cleaning device of the present invention allows the column to be inserted into the carbon brush box while the brush holder is inserted into the cleaning chamber through the box opening. The back cleaning brush cleans the back of the brush holder, the two side cleaning brushes clean the two sides of the brush holder, and the inner wall cleaning brush cleans the inner wall of the carbon brush box. Simultaneously, a negative pressure mechanism creates a negative pressure chamber, which not only draws air from the cleaning chamber but also draws air around the column into the cleaning chamber through the dust suction hole and the inner cavity. A filter located between the cleaning chamber and the negative pressure chamber adsorbs floating dust. This not only improves the brush holder cleaning efficiency but also reduces dust generation, saves cleaning time and costs, and achieves highly efficient brush holder cleaning. Attached Figure Description

[0024] Figure 1 This diagram illustrates the mating relationship between the brush holder and the carbon brush in existing technology. Figure One ;

[0025] Figure 2 This diagram illustrates the mating relationship between the brush holder and the carbon brush in existing technology. Figure Two ;

[0026] Figure 3 This is a schematic diagram of the generator excitation brush holder cleaning device in an embodiment of the present invention. Figure One ;

[0027] Figure 4 This is a schematic diagram of the generator excitation brush holder cleaning device in an embodiment of the present invention. Figure Two .

[0028] Figure label:

[0029] 100. Brush grip; 101. Handle; 102. Back; 103. Side; 104. Brush holder; 200. Brush;

[0030] 1. Cabinet; 11. Cabinet opening; 12. Cleaning chamber; 13. Negative pressure chamber; 2. Negative pressure mechanism; 21. Vacuum pump; 22. Negative pressure pipeline; 221. Negative pressure through hole; 3. Panel cleaning structure; 31. Back cleaning brush; 32. Side cleaning brush; 33. Back support plate; 331. Back panel through hole; 34. Side support plate; 341. Side panel through hole; 35. Shell; 4. Carbon brush box cleaning structure; 41. Column; 42. Inner wall cleaning brush; 43. Inner cavity; 44. Dust suction hole; 5. Filter; 6. Switch; 7. Battery. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] It should be noted that, as Figures 1-2 As shown, the carbon brush 200 is inserted into the carbon brush box 104 of the brush holder 100. In the prior art, the back 102, sides 103 and carbon brush box 104 of the brush holder 100 are usually manually cleaned by using a brush. During the cleaning process, there is a lot of dust, the cleaning efficiency is low, the time is long, and there is a problem of incomplete cleaning.

[0039] To solve the above problems, such as Figures 3-4 As shown, this embodiment provides a generator excitation brush holder cleaning device, including a housing 1, a negative pressure mechanism 2, a panel cleaning structure 3, and multiple carbon brush box cleaning structures 4.

[0040] The housing 1 is provided with a housing opening 11 for the brush holder 100 to enter and exit. The housing 1 is provided with a filter element 5, which divides the interior of the housing 1 into a cleaning chamber 12 and a negative pressure chamber 13 located below the cleaning chamber 12.

[0041] The negative pressure mechanism 2 can create negative pressure in the negative pressure chamber 13.

[0042] The panel cleaning structure 3 is located in the cleaning chamber 12. The panel cleaning structure 3 includes a back cleaning brush 31 and two side cleaning brushes 32. The back cleaning brush 31 is used to clean the back 102 of the brush handle 100, and the two side cleaning brushes 32 are used to clean the two sides 103 of the brush handle 100.

[0043] Multiple carbon brush box cleaning structures 4 are located on the outside of the housing 1, and the multiple carbon brush box cleaning structures 4 are arranged one-to-one with the multiple carbon brush boxes 104 of the brush holder 100. The carbon brush box cleaning structure 4 includes a column 41 and an inner wall cleaning brush 42. The column 41 can extend into the corresponding carbon brush box 104. The inner wall cleaning brush 42 is located on the column 41 and is used to clean the inner wall of the carbon brush box 104. The column 41 has an inner cavity 43 that communicates with the cleaning chamber 12, and the column 41 has a dust suction hole 44 that communicates with the inner cavity 43.

[0044] While inserting the brush holder 100 into the cleaning chamber 12 through the opening 11, the column 41 can be inserted into the carbon brush box 104. Then, the back cleaning brush 31 is used to clean the back 102 of the brush holder 100, the two side cleaning brushes 32 are used to clean the two sides 103 of the brush holder 100, and the inner wall cleaning brush 42 is used to clean the inner wall of the carbon brush box 104. At the same time, the negative pressure mechanism 2 creates a negative pressure in the negative pressure chamber 13, which not only draws air from the cleaning chamber 12, but also draws air around the column 41 into the cleaning chamber 12 through the dust suction hole 44 and the inner chamber 43. The filter 5 located between the cleaning chamber 12 and the negative pressure chamber 13 adsorbs floating dust, which not only improves the cleaning efficiency of the brush holder 100, but also reduces dust and saves cleaning time costs, achieving high-efficiency cleaning of the brush holder 100.

[0045] In this embodiment, the filter element 5 is a plate-shaped structure. For example, the filter element 5 is a dust filter screen in the prior art. Of course, the filter element 5 can also be a composite filter core in the prior art, which is not limited here.

[0046] Optionally, the back cleaning brush 31 is elongated to facilitate thorough cleaning of the back 102 of the brush handle 100.

[0047] Optionally, the side cleaning brush 32 is elongated to facilitate thorough cleaning of the sides 103 of the brush handle 100.

[0048] Optionally, the panel cleaning structure 3 also includes a back support plate 33 corresponding to the back surface 102 of the brush holder 100. The back support plate 33 is fixed to the cleaning cavity 12, and the back cleaning brush 31 is fixed to the back support plate 33. When the brush holder 100 is inserted into the cleaning cavity 12, the back support plate 33 can be used to support the back surface 102 of the brush holder 100, reducing the labor intensity of the operator.

[0049] Optionally, the panel cleaning structure 3 also includes two side support plates 34, each corresponding to one of the two sides 103 of the brush holder 100. Both side support plates 34 are fixed to the cleaning cavity 12, and the two side cleaning brushes 32 are respectively fixed to the two side support plates 34. When the brush holder 100 is inserted into the cleaning cavity 12, the two side support plates 34 can support the two sides 103 of the brush holder 100, reducing the labor intensity of the operator. It should be noted that both sides 103 of the brush holder 100 are inclined, and furthermore, the two side support plates 34 are also inclined, so that the side support plates 34 can fit tightly against the corresponding sides 103 of the brush holder 100, providing stable support for the two sides 103 of the brush holder 100.

[0050] Optionally, the back support plate 33 is provided with a back plate through hole 331. It should be noted that when the air in the cleaning chamber 12 is sucked by the negative pressure formed in the negative pressure chamber 13, an airflow can be formed in the cleaning chamber 12. The airflow can flow through the back plate through hole 331, avoiding the back support plate 33 from blocking the airflow and affecting the dust collection effect.

[0051] Optionally, the back panel has multiple through holes 331. Increasing the number of through holes 331 helps to promote airflow and improve dust removal efficiency.

[0052] Optionally, the side support plate 34 is provided with a side plate through hole 341. When the air in the cleaning chamber 12 is sucked by the negative pressure formed in the negative pressure chamber 13, an airflow can be formed in the cleaning chamber 12. The airflow can flow through the side plate through hole 341, avoiding the side support plate 34 from blocking the airflow and affecting the dust collection effect.

[0053] Optionally, the side plate has multiple through holes 341. Increasing the number of through holes 341 on the side plate helps to promote airflow and improve dust removal efficiency.

[0054] Optionally, the panel cleaning structure 3 also includes a connecting plate. The connecting plate, the back support plate 33, and the two side support plates 34 are connected to form a housing 35 with one open end. The open end of the housing 35 is corresponding to the opening 11 of the box. The housing 35 supports the brush holder 100, resulting in higher stability.

[0055] Optionally, both side support plates 34 are equipped with multiple side cleaning brushes 32. Using multiple side cleaning brushes 32 to clean the sides 103 of the brush handle 100 simultaneously results in better effect and higher efficiency.

[0056] Optionally, the inner wall cleaning brush 42 is a ring-shaped structure wrapped around the outside of the column 41. In this way, only one inner wall cleaning brush 42 is needed to thoroughly clean the inner wall of the carbon brush box 104, which is simple in structure and effective.

[0057] Optionally, the negative pressure mechanism 2 includes a vacuum pump 21, which is connected to the negative pressure chamber 13 to create a negative pressure in the negative pressure chamber 13.

[0058] Optionally, the generator excitation brush holder cleaning device also includes a switch 6, which is located on the outside of the housing 1. The switch 6 is electrically connected to the vacuum pump 21, and the vacuum pump 21 can be started or stopped by the switch 6, making operation convenient.

[0059] Optionally, the negative pressure mechanism 2 further includes a negative pressure pipeline 22 connected to the vacuum pump 21. The negative pressure pipeline 22 is located in the negative pressure chamber 13 and has multiple negative pressure through holes 221 communicating with the negative pressure chamber 13. In this way, a uniform negative pressure can be formed in the negative pressure chamber 13, resulting in high dust removal efficiency and better dust removal effect.

[0060] Optionally, the generator excitation brush holder cleaning device also includes a battery 7, which is electrically connected to the vacuum pump 21. Powering the vacuum pump 21 with the battery 7 eliminates the need for an external power source, facilitating the movement of the generator excitation brush holder cleaning device and enabling portable cleaning. For example, the battery 7 is a storage battery.

[0061] Optionally, the filter element 5 is detachably disposed inside the housing 1, which facilitates quick disassembly and assembly of the filter element 5 so that the filter element 5 can be replaced periodically.

[0062] For example, the housing 1 is provided with a slide groove, and the filter element 5 is provided with a connecting part. The connecting part can slide into or out of the slide groove in the horizontal direction, thereby realizing the quick assembly and disassembly of the filter element 5.

[0063] For example, the working principle of the generator excitation brush holder cleaning device in this embodiment is as follows:

[0064] 1) Remove carbon brush 200 from carbon brush holder 104;

[0065] 2) Turn on switch 6 to start vacuum pump 21 and evacuate vacuum chamber 13;

[0066] 3) Manually grasp the handle 101 of the brush holder 100, insert the brush holder 100 into the cleaning chamber 12 from the box opening 11, and at the same time insert the column 41 into the carbon brush box 104, and then pull the brush holder 100 out upwards.

[0067] 4) Repeat step 3) until the brush handle is free of obvious dust on the surface;

[0068] 5) Turn off switch 6, and brush 100 cleaning is complete; simply replace filter element 5 periodically.

[0069] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A generator excitation brush holder cleaning device, characterized in that, include: The box (1) has an opening (11) for the brush holder (100) to enter and exit. The box (1) is equipped with a filter (5) which divides the interior of the box (1) into a cleaning chamber (12) and a negative pressure chamber (13) located below the cleaning chamber (12). The negative pressure mechanism (2) is capable of creating a negative pressure in the negative pressure chamber (13); A panel cleaning structure (3) is provided in the cleaning cavity (12). The panel cleaning structure (3) includes a back cleaning brush (31) and two side cleaning brushes (32). The back cleaning brush (31) is used to clean the back (102) of the brush handle (100), and the two side cleaning brushes (32) are used to clean the two sides (103) of the brush handle (100) respectively. Multiple carbon brush box cleaning structures (4) are provided on the outside of the housing (1). The multiple carbon brush box cleaning structures (4) are provided one-to-one with the multiple carbon brush boxes (104) of the brush holder (100). The carbon brush box cleaning structure (4) includes a column (41) and an inner wall cleaning brush (42). The column (41) can extend into the corresponding carbon brush box (104). The inner wall cleaning brush (42) is provided on the column (41) and is used to clean the inner wall of the carbon brush box (104). The column (41) is provided with an inner cavity (43) communicating with the cleaning chamber (12). The column (41) is provided with a dust suction hole (44) communicating with the inner cavity (43).

2. The generator excitation brush holder cleaning device according to claim 1, characterized in that, The panel cleaning structure (3) further includes a back support plate (33) corresponding to the back side (102) of the brush holder (100), the back support plate (33) being fixed in the cleaning cavity (12), and the back cleaning brush (31) being fixed in the back support plate (33).

3. The generator excitation brush holder cleaning device according to claim 2, characterized in that, The panel cleaning structure (3) also includes two side support plates (34) that correspond one-to-one with the two sides (103) of the brush holder (100). The two side support plates (34) are fixed in the cleaning cavity (12), and the two side cleaning brushes (32) are respectively fixed in the two side support plates (34).

4. The generator excitation brush holder cleaning device according to claim 3, characterized in that, Both of the side support plates (34) are provided with a plurality of the side cleaning brushes (32).

5. The generator excitation brush holder cleaning device according to claim 3, characterized in that, The back support plate (33) is provided with a back plate through hole (331); and / or, The side support plate (34) is provided with a side plate through hole (341).

6. The generator excitation brush holder cleaning device according to claim 1, characterized in that, The inner wall cleaning brush (42) is a ring structure that is wrapped around the outside of the column (41).

7. The generator excitation brush holder cleaning device according to claim 1, characterized in that, The negative pressure mechanism (2) includes a vacuum pump (21), which is connected to the negative pressure chamber (13).

8. The generator excitation brush holder cleaning device according to claim 7, characterized in that, The negative pressure mechanism (2) also includes a negative pressure pipeline (22) connected to the vacuum pump (21). The negative pressure pipeline (22) is located in the negative pressure chamber (13) and has a plurality of negative pressure through holes (221) communicating with the negative pressure chamber (13).

9. The generator excitation brush holder cleaning device according to claim 7, characterized in that, The generator excitation brush holder cleaning device also includes a battery (7), which is electrically connected to the vacuum pump (21).

10. The generator excitation brush holder cleaning device according to claim 1, characterized in that, The filter element (5) is detachably disposed inside the housing (1).

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