Yaw collector ring stator structure

Abstract

The utility model relates to a yaw collector ring stator structure, which comprises a conducting ring, a sliding sleeve and an electric brush, the sliding sleeve is arranged on the conducting ring, and a slideway is arranged in the sliding sleeve along the radial direction of the conducting ring; the electric brush comprises a brush body arranged on the slide way, a plurality of through holes are formed in the brush body in the radial direction of the conducting ring, and the positions where the through holes are formed deviate towards the relative rotation direction of the brush body from the near end to the far end. When the slip ring rubs with the electric brush to generate particle dust, the particle dust tends to fall down and deviate along the rotation direction of the slip ring under the action of gravity, friction force and centrifugal force. Under the action of centrifugal force, particle dust can be discharged between the slip ring and the electric brush along the through hole, and the position of the through hole is matched with the moving direction of the particle dust, so that particles and dust can be timely discharged between the slip ring and the electric brush, and the service life of equipment is prolonged. Meanwhile, heat generated by friction can be timely discharged through the through holes, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of yaw collector rings of generators, in particular to a yaw collector ring stator structure. Background Art

[0002] As a type of collector ring, the yaw collector ring is widely used in wind power generation systems. The yaw collector ring is installed on the tower platform below the nacelle of the wind turbine. When the nacelle rotates with the wind direction, the rotor assembly in the yaw collector ring rotates synchronously with the nacelle yaw. During this process, the slip ring in the rotor assembly is always in contact with the brush in the stator assembly to ensure current transmission.

[0003] The existing yaw collector ring will produce friction with the brush during the rotation of the slip ring, and shed particles and dust. The shed particles and dust are mixed between the slip ring and the brush and cannot be discharged in time, causing vibration and aggravating wear, seriously affecting the service life of the equipment. In addition, the heat generated during the friction process cannot be discharged in time, which also reduces the stability and life of the brush. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a yaw collector ring stator structure, so as to timely discharge particles and dust generated by the friction between the brush and the slip ring, and reduce the temperature of the brush.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A yaw collector ring stator structure comprises a conductive ring, a sliding sleeve and a brush, wherein:

[0007] The sliding sleeve is arranged on the conductive ring, and a sliding track is provided in the sliding sleeve along the radial direction of the conductive ring;

[0008] The brush comprises a brush body arranged on the slideway, and a plurality of through holes are opened on the brush body along the radial direction of the conductive ring. From the proximal end to the distal end, the positions where the through holes are opened are offset towards the relative rotation direction of the brush body.

[0009] Furthermore, the conductive ring includes a plurality of conductive plates and a plurality of connecting plates, and the plurality of conductive plates and the connecting plates are arranged at intervals and connected end to end to form a closed loop.

[0010] Furthermore, through grooves are formed at both the distal end and the proximal end of the brush body.

[0011] Furthermore, the height of the distal end of the brush body is reduced to form a low platform.

[0012] Furthermore, a support block is provided at the proximal end of the slideway, and the distal end of the support block supports the brush body.

[0013] Furthermore, a plurality of the conductive rings are arranged in a vertical direction, and a plurality of columns are arranged between the conductive rings.

[0014] Furthermore, the column comprises a core rod and a sleeve, the conductive ring is sleeved on the core rod, and the sleeve is sleeved on the core rod between adjacent conductive rings.

[0015] Furthermore, the brush also includes a wire and a conductive sheet, the wire connects the brush body and the conductive sheet at the same time, and the conductive sheet is arranged on the conductive ring.

[0016] Furthermore, the brush also includes a stopper and an elastic member, wherein the stopper is arranged at a notch on the outer side of the slideway, and the elastic member simultaneously connects the brush body and the stopper.

[0017] Furthermore, a positioning groove is provided on the conductive ring, and an extension portion is provided on the sliding sleeve to be inserted into the positioning groove.

[0018] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0019] (1) A yaw collector ring stator structure in the utility model has a plurality of through holes on the brush body along the radial direction of the conductive ring, and the positions of the through holes are offset from the proximal end to the distal end in the relative rotation direction of the brush body. When the slip ring and the brush generate particulate dust due to friction, the particulate dust will tend to fall and deviate along the rotation direction of the slip ring under the action of gravity, friction and centrifugal force. Under the action of centrifugal force, the particulate dust can be discharged from between the slip ring and the brush along the through holes, and the positions of the through holes are in line with the moving direction of the particulate dust, which facilitates the particles and dust to slide into the through holes, ensuring that the particles and dust are discharged from between the slip ring and the brush in time, thereby extending the service life of the equipment. The presence of the through holes also facilitates the timely discharge of heat generated by friction, thereby improving the heat dissipation efficiency.

[0020] (2) Furthermore, a through groove is provided on the brush body of the brush to facilitate the discharge of particulate dust in the sleeve, thereby further improving the chip removal and heat dissipation efficiency.

[0021] (3) Furthermore, the conductive ring is formed by a plurality of conductive plates and connecting plates arranged at intervals and connected end to end. The structure of replacing some conductive plates with connecting plates can effectively reduce the cost of the conductive ring without affecting the conductive efficiency. If the conductive plates are directly arranged in a split type, the gap between the conductive plates will cause structural instability. The symmetrical and balanced installation structure of the connecting plate-conductive plate ensures the stability of the equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structural schematic diagram of a yaw collector ring stator structure provided by an embodiment of the utility model is shown.

[0023] Figure 2 A partial enlarged view of a yaw collector ring stator structure at point A provided in an embodiment of the utility model is shown.

[0024] Figure 3 A partial enlarged view of a yaw collector ring stator structure at position B provided by an embodiment of the utility model is shown.

[0025] Figure 4 A schematic structural diagram of a conductive ring in a yaw collector ring stator structure provided by an embodiment of the utility model is shown.

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a brush in a yaw collector ring stator structure provided by an embodiment of the utility model is shown.

[0027] Figure 6 A right side structural schematic diagram of a brush in a yaw collector ring stator structure provided by an embodiment of the utility model is shown.

[0028] Figure 7 A schematic structural diagram of a central column in a yaw collector ring stator structure provided by an embodiment of the utility model is shown.

[0029] Markings in the accompanying drawings:

[0030] 1. Brush; 11. Brush body; 111. Through hole; 112. Through slot; 113. Low platform; 12. Wire; 13. Conductive sheet; 14. Stopper; 15. Elastic member; 2. Post; 21. Core rod; 22. Sleeve; 3. Conductive ring; 31. Conductive plate; 311. First step; 312. Positioning slot; 32. Connecting plate; 321. Second step; 4. Sleeve; 41. Slideway; 42. Support block; 43. Extension. DETAILED DESCRIPTION

[0031] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0032] In the description of the present invention, the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In order to more clearly describe the structure of the above-mentioned yaw collector ring stator structure, the present invention defines the terms "distal end" and "proximal end". Specifically, the "distal end" refers to the end far away from the ground, and the "proximal end" refers to the end close to the ground. Figure 2 For example, Figure 1 The end of the middle support block 42 close to the brush body 11 is the distal end. Figure 2 The end of the middle support block 42 close to the conductive plate 31 is the proximal end.

[0034] Please refer to Figure 1 and Figure 2 A yaw collector ring stator structure includes a conductive ring 3, a sleeve 4 and a brush 1, wherein the sleeve 4 is arranged on the conductive ring 3, and a slideway 41 is opened in the sleeve 4 along the radial direction of the conductive ring 3. The brush 1 includes a brush body 11 arranged on the slideway 41, and a plurality of through holes 111 are opened on the brush body 11 along the radial direction of the conductive ring 3, and the positions where the through holes 111 are opened are offset from the proximal end to the distal end to the relative rotation direction of the brush body 11. Specifically, when the slip ring and the brush 1 rub to generate particle dust, the particle dust will tend to fall and deviate along the rotation direction of the slip ring under the action of gravity, friction and centrifugal force. Under the action of centrifugal force, the particle dust can be discharged from between the slip ring and the brush 1 along the through hole 111, and the position where the through hole 111 is opened is in line with the moving direction of the particle dust, so that the particles and dust can slide into the through hole 111, ensuring that the particles and dust are discharged from between the slip ring and the brush 1 in time to extend the service life of the equipment. Furthermore, the existence of the through hole 111 also facilitates the timely discharge of the heat generated by friction, thereby improving the heat dissipation efficiency.

[0035] The specific structure of the conductive ring 3 is described below:

[0036] Please refer to Figure 1 and Figure 3, the conductive ring 3 includes a plurality of conductive plates 31 and a plurality of connecting plates 32, and the plurality of conductive plates 31 and the connecting plates 32 are arranged at intervals and connected end to end to form a closed loop. Specifically, the conductive ring 3 in the utility model includes two conductive plates 31 and two connecting plates 32. The first steps 311 are extended and arranged at both ends of the length of the conductive plate 31, and the second steps 321 are arranged at both ends of the length of the connecting plate 32. The first step 311 and the second step 321 are screwed to realize the connection between the conductive plate 31 and the connecting plate 32. The first step 311 and the second step 321 facilitate the rapid positioning of the conductive plate 31 and the connecting plate 32, and make the conductive plate 31 and the connecting plate 32 after connection in the same horizontal plane, thereby improving the stability of the conductive ring 3. The structure of replacing part of the conductive plate 31 with the connecting plate 32 can effectively reduce the cost of the conductive ring 3 without affecting the conductive efficiency. If the conductive plate 31 is directly arranged in a split type, the gap between the conductive plate 31 and the conductive plate 31 will cause structural instability. The symmetrical and balanced installation structure of the connecting plate 32-conductive plate 31 ensures the stability of the equipment operation.

[0037] Please refer to Figure 2 The conductive ring 3 is provided with a positioning groove 312, and the sliding sleeve 4 is provided with an extension portion 43 which is inserted into the positioning groove 312. Specifically, the positioning groove 312 and the extension portion 43 cooperate with each other to quickly position the sliding sleeve 4 and the conductive ring 3 in the vertical direction and a single horizontal direction, which is convenient for assembly.

[0038] The specific structure of the brush 1 is described below:

[0039] Please refer to Figure 2 The distal end and the proximal end of the brush body 11 are both provided with through grooves 112. Specifically, the through grooves 112 facilitate the discharge of dust particles in the sleeve 4, further improving the efficiency of chip removal and heat dissipation. At the same time, the through grooves 112 reduce the contact area between the sleeve 4 and the brush body 11 to reduce friction and facilitate the brush body 11 to slide along the through grooves 112.

[0040] Please refer to Figure 5 The height of the distal end of the brush body 11 is reduced to form a low platform 113. Specifically, the low platform 113 further reduces the contact area between the brush body 11 and the sliding sleeve 4, reduces the friction between the brush body 11 and the sliding sleeve 4, facilitates chip removal and heat dissipation, and reduces the material of the brush body 11.

[0041] Please refer to Figure 2 and Figure 5The brush 1 also includes a wire 12 and a conductive sheet 13. The wire 12 connects the brush body 11 and the conductive sheet 13 at the same time. The conductive sheet 13 is arranged on the conductive ring 3. Specifically, the wire 12 connects the brush body 11 and the conductive sheet 13 by soldering. The conductive sheet 13 is fixed on the conductive ring 3. The current transmitted to the brush body 11 by the slip ring (not shown in the figure) is transmitted to the conductive ring 3 along the wire 12 and the conductive sheet 13. The wire 12 can continuously transmit current while cooperating with the brush body 11 to slide.

[0042] Please refer to Figure 6 The brush 1 also includes a block 14 and an elastic member 15. The block 14 is arranged at the slot on the outside of the slideway 41, and the elastic member 15 connects the brush body 11 and the block 14 at the same time. Specifically, the block 14 prevents the brush body 11 from sliding out of the slot on the outside of the slideway 41, and the slot on the inside of the slideway 41 is provided with a slip ring to limit the position of the brush body 11 to prevent the brush body 11 from falling off. The elastic member 15 continuously pushes the brush body 11 to ensure that the brush body 11 contacts the slip ring to transfer current.

[0043] The specific structure of the sliding sleeve 4 and the column 2 is described below:

[0044] Please refer to Figure 2 A support block 42 is provided at the proximal end of the slideway 41, and the distal end of the support block 42 supports the brush body 11. Specifically, the support block 42 supports the brush body 11, reduces the contact area between the slideway 41 and the brush body 11, and forms a gap between the brush body 11 and the slideway 41, reduces the friction between the brush body 11 and the sliding sleeve 4, and facilitates chip removal and heat dissipation.

[0045] Please refer to Figure 1 , there are several conductive rings 3 arranged in the vertical direction, and several pillars 2 are arranged between the several conductive rings 3. Specifically, several conductive rings 3 are simultaneously sleeved on the pillars 2 to form a stator structure, and the conductive rings 3 arranged in multiple layers can increase the collection area and improve the energy collection efficiency; the current is shunted to multiple conductive rings 3 to reduce the loss of resistance; multiple conductive rings 3 work simultaneously to ensure the reliability of the system.

[0046] Please refer to Figure 1 and Figure 7 The column 2 includes a core rod 21 and a sleeve 22. The conductive ring 3 is sleeved on the core rod 21, and the sleeve 22 is sleeved on the core rod 21 between adjacent conductive rings 3. Specifically, after the conductive ring 3 is sleeved on the core rod 21, it is only necessary to sleeve the sleeves 22 with different barrel heights on the core rod 21 to limit the positions of the intervals between different conductive rings 3, which is convenient for assembly and simplified installation.

[0047] The specific working process of the utility model is as follows:

[0048] When transmitting current, the slip ring rotates while contacting several brushes 1, and friction between the slip ring and the brush body 11 of the brush 1 generates particles and heat. The particles generated by the friction between the slip ring and the brush 1 fall and deviate in the direction of the slip ring's rotation under the action of gravity, friction and centrifugal force. During this process, the particles enter the through hole 111 and the through groove 112, and are discharged from between the slip ring and the brush 1 along the through hole 111 and the through groove 112. The heat generated during the friction process also dissipates faster along the through hole 111 and the through groove 112.

[0049] It can be seen that the above-mentioned yaw collector ring stator structure can timely discharge particles generated by the friction between the slip ring and the brush 1 and increase the heat dissipation efficiency of the brush body 11.

[0050] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0051] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A yaw collector ring stator structure, characterized in that: It includes a conductive ring, a sliding sleeve and a brush, wherein: The sliding sleeve is arranged on the conductive ring, and a sliding track is provided in the sliding sleeve along the radial direction of the conductive ring; The brush comprises a brush body arranged on the slideway, and a plurality of through holes are opened on the brush body along the radial direction of the conductive ring. From the proximal end to the distal end, the positions where the through holes are opened are offset towards the relative rotation direction of the brush body.

2. The yaw collector ring stator structure according to claim 1, characterized in that: The conductive ring comprises a plurality of conductive plates and a plurality of connecting plates, wherein the conductive plates and the connecting plates are arranged at intervals and connected end to end to form a closed loop.

3. The yaw collector ring stator structure according to claim 1, characterized in that: The distal end and the proximal end of the brush body are both provided with through grooves.

4. The yaw collector ring stator structure according to claim 1, characterized in that: The height of the distal end of the brush body is reduced to form a low platform.

5. The yaw collector ring stator structure according to claim 1, characterized in that: A support block is arranged at the proximal end of the slideway, and a distal end of the support block supports the brush body.

6. The yaw collector ring stator structure according to claim 1, characterized in that: A plurality of the conductive rings are arranged in a vertical direction, and a plurality of columns are arranged between the conductive rings.

7. The yaw collector ring stator structure according to claim 6, characterized in that: The column comprises a core rod and a sleeve, the conductive ring is sleeved on the core rod, and the sleeve is sleeved on the core rod between adjacent conductive rings.

8. The yaw collector ring stator structure according to claim 1, characterized in that: The brush further comprises a conducting wire and a conductive sheet, wherein the conducting wire simultaneously connects the brush body and the conductive sheet, and the conductive sheet is arranged on the conductive ring.

9. The yaw collector ring stator structure according to claim 1, characterized in that: The electric brush also includes a stopper and an elastic member. The stopper is arranged at a notch on the outer side of the slideway, and the elastic member simultaneously connects the brush body and the stopper.

10. The yaw collector ring stator structure according to claim 1, characterized in that: The conductive ring is provided with a positioning groove, and the sliding sleeve is provided with an extension portion which is inserted into the positioning groove.

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