Rotary power transmission device

Abstract

The utility model provides a rotary power transmission device. The rotary power transmission equipment comprises a box body, a rotary frame and a slip ring assembly, the rotating frame is arranged in the box body and can rotate relative to the box body; the slip ring assembly comprises a confluence plate, a conductive slip ring and a plurality of carbon brushes, the confluence plate is arranged in the box body, the conductive slip ring is arranged on the rotating frame, when the rotating frame rotates, the conductive slip ring can rotate relative to the confluence plate, the carbon brushes are installed on the confluence plate and arranged at intervals in the circumferential direction of the conductive slip ring, and the carbon brushes are all electrically connected with the confluence plate; the carbon brushes are in contact with the peripheral surface of the conductive slip ring; a dust collecting cover is arranged in the box body, the slip ring assembly is arranged in the dust collecting cover and is in insulated connection with the dust collecting cover, and the dust collecting cover is used for collecting dust generated when the conductive slip ring and the carbon brush rotate relatively. The rotary power transmission device can avoid secondary diffusion of dust so as to avoid influence of the dust on insulation and avoid electric arc and even short circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power engineering equipment, in particular to a rotating power transmission equipment. Background Art

[0002] In high-voltage electrical equipment, insulating gas is often used for filling to achieve external insulation, and the purity of the gas is increased as much as possible to reduce the insulation distance and make the volume of the equipment as small as possible. Therefore, the purity of the gas is a key factor. Once dust or particles appear, it will affect the insulation performance. When the electrical equipment is running, the carbon brushes of the slip ring assembly and the conductive slip rings slide and rub, causing the carbon brushes to wear, and the wear of the carbon brushes will generate dust. In the high-voltage electric field, the presence of dust will cause arcs or even short circuits, causing equipment failure. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a rotating power transmission device, which can collect dust generated by wear during the rotation of the conductive slip ring to avoid the dust from affecting the insulation and causing arcs or even short circuits.

[0004] According to the embodiment of the utility model, the rotating power transmission equipment includes a box body, a rotating frame and a slip ring assembly; the rotating frame is arranged in the box body, and the rotating frame can rotate relative to the box body; the slip ring assembly includes a busbar, a conductive slip ring and a plurality of carbon brushes, the busbar is arranged in the box body, the conductive slip ring is arranged in the rotating frame, when the rotating frame rotates, the conductive slip ring can rotate relative to the busbar, a plurality of the carbon brushes are installed on the busbar, and are arranged at intervals along the circumference of the conductive slip ring, the carbon brushes are all electrically connected to the busbar, and the carbon brushes are all in contact with the outer peripheral surface of the conductive slip ring; a dust collection cover is provided in the box body, the slip ring assembly is arranged in the dust collection cover, and is insulated and connected to the dust collection cover, and the dust collection cover is used to collect dust generated when the conductive slip ring and the carbon brush rotate relative to each other.

[0005] The rotary power transmission device according to the embodiment of the utility model has at least the following beneficial effects: the rotary power transmission device of the utility model is provided with a dust collection cover in the casing, the slip ring assembly is arranged in the dust collection cover, a relatively sealed space is formed in the dust collection cover, and the dust generated by the wear of the carbon brush during the rotation of the slip ring assembly is confined in the dust collection cover, thereby avoiding secondary diffusion of the dust, thereby avoiding the influence of the dust on the insulation, and avoiding causing electric arcs or even short circuits.

[0006] According to some embodiments of the utility model, the dust collecting hood includes an upper hood body and a lower hood body that are combined together, an accommodation space is formed between the upper hood body and the lower hood body, and the slip ring assembly is accommodated in the accommodation space.

[0007] According to some embodiments of the present invention, an inner wall of the accommodating space is provided with a sticky coating.

[0008] According to some embodiments of the utility model, the dust collecting hood is provided with a first avoidance hole, and the first avoidance hole is used for allowing a conductor connected to the busbar to pass through.

[0009] According to some embodiments of the utility model, the dust collection hood is provided with a second avoidance hole, and the second avoidance hole is used for a connecting piece for fixing the busbar to pass through.

[0010] According to some embodiments of the present invention, the outer side wall of the upper cover body and the outer side wall of the lower cover body are both provided with a plurality of notches, and the notches on the upper cover body and the notches on the lower cover body are correspondingly combined to form the first avoidance hole and the second avoidance hole.

[0011] According to some embodiments of the utility model, the upper cover body is provided with a first mounting hole, the lower cover body is provided with a second mounting hole, the first mounting hole and the second mounting hole are arranged correspondingly, and the dust collection cover is fixedly connected to the busbar by a fixing piece passing through the first mounting hole and the second mounting hole.

[0012] According to some embodiments of the present utility model, an inner side wall of the dust collecting hood is provided with an annular sliding groove.

[0013] According to some embodiments of the utility model, the outer wall of the box is provided with a first sleeve, the rotating frame is provided with a second sleeve, the busbar is electrically connected to the first sleeve through a conductor, and the conductive slip ring is electrically connected to the second sleeve through a conductor.

[0014] According to some embodiments of the present invention, the box is filled with insulating gas.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 A three-dimensional perspective view of a rotating electrical transmission device according to an embodiment of the utility model;

[0018] Figure 2 A three-dimensional cross-sectional view of a rotating electrical transmission device according to an embodiment of the utility model;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 A three-dimensional schematic diagram of a dust collecting cover of a rotating electric conveying device according to an embodiment of the utility model;

[0021] Figure 5 A cross-sectional view of a dust collecting cover of a rotating electrical transmission device according to an embodiment of the utility model;

[0022] Figure 6 This is a three-dimensional exploded view of a dust collection hood of a rotating electrical transmission device according to an embodiment of the utility model.

[0023] Figure Number:

[0024] Rotating electric transmission equipment 10;

[0025] Box 100, first support member 110, first sleeve 120, second sleeve 130, conductor 140, rotating frame 150, central axis 151, second support member 160;

[0026] Slip ring assembly 200, busbar 210, conductive slip ring 220, carbon brush 230, brush head 231, elastic member 240;

[0027] The dust collecting cover 300 , the upper cover body 310 , the first mounting hole 311 , the lower cover body 320 , the second mounting hole 321 , the accommodating space 330 , the first avoidance hole 340 , the second avoidance hole 350 , the notch 360 , and the annular slide groove 370 . DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the descriptions involving orientation, such as left, right, etc., the orientation or positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Reference Figure 1 , Figure 2 The rotating power transmission device 10 proposed in the embodiment of the utility model includes a box body 100, a rotating frame 150 and a slip ring assembly 200; the rotating frame 150 is provided with a central axis 151, and both ends of the central axis 151 are rotatably connected to the box body 100 through bearings, so that the rotating frame 150 can rotate relative to the box body 100, and the box body 100 is provided with a plurality of first support members 110, and the rotating frame 150 is provided with a plurality of second support members 160. The plurality of first support members 110 and the plurality of second support members 160 are spaced apart around the axis of the central axis 151, and the second support members 160 can rotate synchronously with the rotating frame 150.

[0033] The slip ring assembly 200 includes a busbar 210, a conductive slip ring 220, and a plurality of carbon brushes 230. The busbar 210 is fixedly connected to a plurality of first support members 110 through a connector. The conductive slip ring 220 is fixedly connected to a plurality of second support members 160 through a connector. The plurality of first support members 110 and the plurality of second support members 160 are both made of insulating materials to achieve insulating support for the slip ring assembly 200. When the rotating frame 150 rotates, the conductive slip ring 220 can rotate relative to the busbar 210.

[0034] A plurality of carbon brushes 230 are fixedly mounted on the busbar 210 along the circumference of the busbar 210, and are spaced apart along the circumference of the conductive slip ring 220. All carbon brushes 230 are electrically connected to the busbar 210, and all carbon brushes 230 are electrically in contact with the outer circumference of the conductive slip ring 220. When the rotating power transmission device 10 is in operation, the housing 100 and the rotating frame 150 rotate relative to each other, and the conductive slip ring 220 and the carbon brushes 230 rotate relative to each other, thereby realizing power transmission.

[0035] During the rotation of the slip ring assembly 200, sliding friction will occur between the carbon brush 230 and the conductive slip ring 220, and the carbon brush 230 will be worn due to the sliding friction. The wear of the carbon brush 230 will generate dust. In the high-voltage electric field, the presence of dust will cause arcs or even short circuits, causing equipment failure. Therefore, the rotary power transmission device 10 of the utility model is provided with a dust collection cover 300 in the box body 100. The dust collection cover 300 can be made of a material with certain insulation properties such as PC. The slip ring assembly 200 is arranged in the dust collection cover 300 and is insulated and connected to the dust collection cover 300. The slip ring assembly 200 is covered in the dust collection cover 300. The dust collection cover 300 is used to collect dust generated when the conductive slip ring 220 and the carbon brush 230 rotate relative to each other to prevent dust from escaping.

[0036] The rotary power transmission device of the utility model is provided with a dust collecting hood 300 in the box 100, and the slip ring assembly 200 is arranged in the dust collecting hood 300, and a relatively sealed space is formed in the dust collecting hood 300. The dust generated by the carbon brush 230 due to wear during the rotation of the slip ring assembly 200 is confined in the dust collecting hood 300, thereby avoiding secondary diffusion of dust, avoiding the dust from affecting the insulation, and avoiding causing arcs or even short circuits. In addition, the dust collecting hood 300 is made of a material with high insulation performance, which can enhance the insulation performance between phases, have a beneficial effect on the electric field, and ensure the reliability of the equipment.

[0037] It is understandable that the number of the carbon brushes 230 , the first support member 110 and the second support member 160 can be set according to specific circumstances and is not limited here.

[0038] Reference Figure 2 , Figure 3 In some embodiments, the brush head 231 of the carbon brush 230 can slide and retract along the radial direction of the conductive slip ring 220. An elastic member 240 is arranged between the brush head 231 and the busbar 210. The elastic member 240 can be an elastic member such as a spring. The elastic member 240 can drive the brush head 231 to slide close to and abut against the outer peripheral surface of the conductive slip ring 220. Through the above arrangement, the brush head 231 of each carbon brush 230 can contact the outer peripheral surface of the conductive slip ring 220 more closely. At the same time, when the conductive slip ring 220 is offset relative to the busbar 210 due to the tilting, swaying, vibration and other phenomena, especially when the equipment is increased in size and weight, the tilting, swaying, vibration and other phenomena are more obvious, resulting in a greater degree of offset of the conductive slip ring 220 relative to the busbar 210. At this time, the brush head 231 of each carbon brush 230 can automatically retract and compensate to make the brush heads 231 of more carbon brushes 230 fit closely with the conductive slip ring 220 as much as possible, and can also effectively prevent the brush head 231 of the carbon brush 230 from hard collision with the conductive slip ring 220 to cause damage to the carbon brush 230, thereby increasing the service life of the slip ring assembly 200.

[0039] Reference Figure 1 , Figure 2 In a specific embodiment, three slip ring assemblies 200 are provided, and the three slip ring assemblies 200 are arranged at intervals along the axial direction of the central axis 151. Correspondingly, three dust collecting hoods 300 are provided, and the three slip ring assemblies 200 are arranged in a one-to-one correspondence with the three dust collecting hoods 300, that is, one slip ring assembly 200 is arranged in each dust collecting hood 300.

[0040] It is understandable that in the above embodiment, when the internal space of the rotating electrical transmission equipment 10 allows, only one dust collection hood 300 may be provided, and the three slip ring assemblies 200 may be integrated in one dust collection hood 300 .

[0041] In a specific embodiment, the box 100 is filled with insulating gas, which can greatly improve the insulation performance inside the box 100 and greatly reduce the insulation distance between two adjacent slip ring assemblies 200, thereby reducing the volume of the device. At the same time, the insulating gas is sealed in the box 100 and isolated from the outside atmosphere, making the rotating power transmission device 10 safer and more reliable. Through the above settings, the rotating power transmission device 10 can be applied to high-voltage power transmission scenarios.

[0042] Among them, the insulating gas can be sulfur hexafluoride, nitrogen, air, a mixture of perfluoroisobutyronitrile and carbon dioxide, etc. The rotating electrical transmission equipment 10 can adopt a micro-positive pressure design, that is, the pressure of the insulating gas such as sulfur hexafluoride filled in the box 100 is slightly greater than the ambient atmospheric pressure, and the box 100 does not need to be filled with high-pressure air. Therefore, the rotating electrical transmission equipment 10 provided by the utility model does not belong to a pressure vessel, and its installation, maintenance, transportation, and storage are the same as conventional equipment, and no special procedures are required. The installation, maintenance, transportation, and storage of the rotating electrical transmission equipment 10 are safer, and the risk of leakage is smaller.

[0043] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 In some embodiments, the dust collecting hood 300 includes an upper hood 310 and a lower hood 320 that are combined together, and a receiving space 330 is formed between the upper hood 310 and the lower hood 320, and the slip ring assembly 200 is received in the receiving space 330. The combination of the upper hood 310 and the lower hood 320 facilitates the assembly of the dust collecting hood 300.

[0044] In some embodiments, the inner wall of the accommodating space 330 is provided with a sticky coating. In other words, the inner wall of the lower cover body 320 and the inner wall of the lower cover body 320 are coated with a sticky coating. The sticky coating can be made of materials such as viscose. The sticky coating has an adhesion effect on dust. During the rotation of the slip ring assembly 200, the dust generated by the wear of the carbon brush 230 can adhere to the sticky coating, thereby fixing the dust to avoid secondary diffusion of the dust.

[0045] Reference Figure 4 In some embodiments, the dust collecting hood 300 is provided with a first avoidance hole 340 and a second avoidance hole 350 . The first avoidance hole 340 is used for the conductor 140 connected to the busbar 210 to pass through, and the second avoidance hole 350 is used for the connecting piece for fixing the busbar 210 to pass through.

[0046] Reference Figure 6 In some embodiments, the outer wall of the upper cover body 310 and the outer wall of the lower cover body 320 are both provided with a plurality of notches 360, and the notches 360 of the upper cover body 310 and the lower cover body 320 are combined to form a corresponding first avoidance hole 340, and the notches 360 on the upper cover body 310 and the notches 360 of the lower cover body 320 are correspondingly combined to form a second avoidance hole 350.

[0047] Reference Figure 4 , Figure 6 The upper cover body 310 is provided with a first mounting hole 311, and the lower cover body 320 is provided with a second mounting hole 321. The first mounting hole 311 and the second mounting hole 321 are arranged correspondingly. The dust collecting hood 300 is fixedly connected to the manifold 210 by fixing parts passing through the first mounting hole 311 and the second mounting hole 321, thereby realizing the fixation of the dust collecting hood 300 in the box body 100.

[0048] Reference Figure 3 , Figure 4 The inner wall of the dust collecting hood 300 is provided with an annular groove 370, the outer wall of the box body 100 is provided with a first sleeve 120, the rotating frame 150 is provided with a second sleeve 130, the busbar 210 is electrically connected to the first sleeve 120 through the conductor 140, and the conductive slip ring 220 is electrically connected to the second sleeve 130 through the conductor 140. The annular groove 370 is used to avoid the conductor 140 connected to the conductive slip ring 220 so that the conductive slip ring 220 can rotate in the dust collecting hood 300.

[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A rotating electric transmission device, characterized in that: include: Box; A rotating frame is disposed in the box body, and the rotating frame can rotate relative to the box body; A slip ring assembly, comprising a busbar, a conductive slip ring and a plurality of carbon brushes, wherein the busbar is arranged on the box body, the conductive slip ring is arranged on the rotating frame, and when the rotating frame rotates, the conductive slip ring can rotate relative to the busbar, and a plurality of carbon brushes are installed on the busbar and arranged at intervals along the circumference of the conductive slip ring, and the carbon brushes are all connected to the busbar, and the carbon brushes are all in contact with the outer circumferential surface of the conductive slip ring; A dust collecting hood is arranged in the box body, the slip ring assembly is arranged in the dust collecting hood and is insulated and connected to the dust collecting hood, and the dust collecting hood is used to collect dust generated when the conductive slip ring rotates relative to the carbon brush.

2. The rotating electric transmission device according to claim 1, characterized in that: The dust collecting cover comprises an upper cover body and a lower cover body which are combined together, an accommodation space is formed between the upper cover body and the lower cover body, and the slip ring assembly is accommodated in the accommodation space.

3. The rotating electric transmission device according to claim 2, characterized in that: The inner wall of the accommodating space is provided with a sticky coating.

4. The rotating electric transmission device according to claim 2, characterized in that: The dust collecting cover is provided with a first avoidance hole, and the first avoidance hole is used for the conductor connected to the busbar to pass through.

5. The rotating electric transmission device according to claim 4, characterized in that: The dust collecting cover is provided with a second avoidance hole, and the second avoidance hole is used for the connection piece fixing the busbar to pass through.

6. The rotating electric transmission device according to claim 5, characterized in that: The outer side wall of the upper cover body and the outer side wall of the lower cover body are both provided with a plurality of notches, and the notches on the upper cover body and the notches on the lower cover body are correspondingly combined to form the first avoidance hole and the second avoidance hole.

7. The rotating electric transmission device according to claim 2, characterized in that: The upper cover body is provided with a first mounting hole, and the lower cover body is provided with a second mounting hole. The first mounting hole and the second mounting hole are arranged correspondingly, and the dust collection cover is fixedly connected to the busbar through a fixing piece passing through the first mounting hole and the second mounting hole.

8. The rotating electric transmission device according to claim 1, characterized in that: The inner side wall of the dust collecting cover is provided with an annular sliding groove.

9. The rotating electric transmission device according to claim 1, characterized in that: The outer wall of the box body is provided with a first sleeve, the rotating frame is provided with a second sleeve, the busbar is electrically connected to the first sleeve through a conductor, and the conductive slip ring is electrically connected to the second sleeve through a conductor.

10. The rotating electric transmission device according to claim 1, characterized in that: The box body is filled with insulating gas.

Images