Low-resistance combined switching structure for wind power slip ring and mounting method of low-resistance combined switching structure

Abstract

The invention discloses a low-resistance combined switching structure for a wind power slip ring and a mounting method of the low-resistance combined switching structure, and belongs to the technical field of wind power slip rings. The low-resistance combined switching structure for the wind power slip ring comprises protection frames located at the upper end and the lower end of the exterior of the wind power slip ring, a supporting ring is arranged on one side between the two protection frames, and a first connecting frame with a heat dissipation cavity is arranged on one side of the supporting ring. According to the wind power slip ring mounting and switching device, the problem that an existing wind power slip ring mounting and switching device does not provide wrapping and protection for an area between a rotating hub and a fixed cabin and a wind power slip ring located in the area is solved; and secondly, the blades can be synchronously driven to rotate through rotation of the protection frame, gas in the protection frame can be extruded, and heat generated by the wind power sliding ring in the protection frame can penetrate through the heat dissipation cavity to be directly discharged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power slip rings, in particular to a low-resistance combined adapter structure for wind power slip rings and a mounting method thereof. BACKGROUND

[0002] The wind power slip ring adapter structure is a key interface device for connecting the rotating hub and the fixed nacelle in a wind turbine generator set. Its core function is to reliably transmit power supply, control signals and data signals through a precisely designed rotating conduction system. The fixed end of the structure is anchored to the nacelle base, and dynamic contact is achieved using multiple layers of noble metal rings and brush groups. The slip ring contact pair made of new type of electric contact noble metal material significantly reduces the contact resistance and wear rate, has excellent oxidation resistance and arc erosion resistance, can adapt to the frequent start-stop working conditions of the variable pitch system, and ensures stable low-noise transmission characteristics in harsh environments such as sand, salt spray and vibration, greatly improving system life and reliability.

[0003] The Chinese patent with publication number CN220253718U discloses a wind power slip ring mounting adapter device, which includes a positioning groove, a positioning block is fixedly connected to the right side of the adapter disc, the right end of the positioning block extends into the interior of the positioning groove, the positioning block can be inserted into the interior of the positioning groove through the positioning groove provided on the mounting disc and the cooperation of the positioning block on the right side of the adapter disc, so that the positioning block can be locked and positioned conveniently, the spring provided on the support plate is used to drive the bottom of the positioning rod to be inserted into the interior of the positioning block through the elastic force of the spring reset and the cooperation of the slide plate, thereby improving the installation speed of the wind power slip ring device.

[0004] The wind power slip ring mounting adapter device of the above-mentioned patent does not provide wrapping and protection for the area between the rotating hub and the fixed nacelle and the wind power slip ring located in this area when it is used and connected to the wind power slip ring, resulting in reduced service life of the wind power slip ring and poor stability during use. SUMMARY

[0005] The present application aims to provide a low-resistance combined adapter structure for wind power slip rings and a mounting method thereof. The external area of the wind power slip ring is wrapped by a pair of protection frames, and the rotation of the protection frames can simultaneously drive the rotation of the blades, which can squeeze the gas inside the protection frames. The heat generated by the wind power slip ring inside the protection frames can be directly discharged through the heat dissipation cavity, which can provide wrapping and protection while avoiding heat accumulation. In addition, the protection frames are supported by rollers, which can prevent the increased resistance of the rotating hub position caused by the gravity of the protection frames. The problems raised in the above background technology are solved.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a low-resistance combined switching structure for a wind power slip ring, comprising a protection frame located at the upper and lower ends of the outer part of the wind power slip ring, a support ring is arranged on one side between the two protection frames, a first connecting frame with a heat dissipation cavity is arranged on one side of the support ring, a pair of second connecting rings with mounting grooves are arranged on the other side between the two protection frames, the outer part of the mounting groove is provided with a second connecting frame fixedly welded with the protection frame, a roller is arranged on the outer wall of the support ring towards the protection frame, and a blade is arranged on the inner wall of the two protection frames; the blade is erected and installed with the protection frame, and the protection frame can rotate with the rotation of the rotating hub, but when the protection frame rotates, the blade in the protection frame rotates and dissipates heat.

[0007] Preferably, the other side of the protection frame is provided with a filter element for filtering the gas for heat dissipation, so as to avoid foreign matters remaining on the outer wall of the wind power slip ring during heat dissipation.

[0008] Preferably, the other side of the two second connecting rings is provided with a first connecting ring, which is connected with the rotating hub through the first connecting ring and is used for supporting and connecting the second connecting ring.

[0009] Preferably, the second connecting frame is connected with the mounting groove through a clamping groove, and the connection of the second connecting frame with the clamping groove of the mounting groove can improve the stability during rotation of the protection frame and improve the heat dissipation efficiency of the protection frame during rotation.

[0010] Preferably, the lower end of the outer part of the filter element is provided with a first shielding ring, and the first shielding ring is fixedly welded with the inner wall of the protection frame, so as to wrap the rotating position of the wind power slip ring and further protect the wind power slip ring during heat dissipation.

[0011] Preferably, the two sides between the two first connecting rings and the two second connecting rings are penetrated by a pair of first bolts, the first connecting ring and the second connecting ring are penetrated by a third bolt, and the first connecting ring and the rotating hub are penetrated and fixed by a second bolt, so that the two first connecting rings and the two second connecting rings can be fixed by the pair of first bolts, and the first connecting ring and the second connecting ring can be connected by the third bolt after being fixed.

[0012] Preferably, the second connecting ring is penetrated by the second connecting frame before the corresponding second bolt is penetrated, so that the second connecting ring can be supported and driven by the second connecting frame while being fixed by the second bolt.

[0013] Preferably, one side of the wind power slip ring is provided with a connecting seat, the connecting seat is provided with a fixed rod towards the four corner positions of the wind power slip ring, and the fixed rod is welded and fixed with the connecting seat, the fixed rod slides through the four corner positions of the wind power slip ring and the first connecting frame, and fourth bolts are arranged through the front and rear ends of the connecting seat, the connecting seat can support and install one end of the wind power slip ring, and can also support the support ring for supporting the protection frame.

[0014] Preferably, the other side of the roller is provided with a second shielding ring welded with the inner wall of the protection frame, the second shielding ring can be attached to the side of the roller, and the attachment of the roller side can avoid the flow of wind, so that most of the heat dissipation gas is directly discharged from the heat dissipation cavity position.

[0015] A mounting method of a low-resistance combined switching structure for a wind power slip ring, comprising the following steps:

[0016] Step one, the first connecting frame and the support ring are sleeved on the outside of the wind power slip ring;

[0017] Step two, a pair of first connecting rings and a pair of second connecting rings are respectively penetrated through the first bolts on both sides, a pair of fixed first connecting rings are sleeved on the outside of the rotating hub, and a pair of fixed second connecting rings are sleeved on one end of the wind power slip ring;

[0018] Step three, the third bolt is penetrated between the second connecting ring and the first connecting ring, the rotating nut outside the third bolt realizes the connection between the second connecting ring and the first connecting ring, and the second bolt is penetrated through the first connecting ring and embedded into the rotating hub to complete the fixation of the pair of first connecting rings;

[0019] Step four, the connecting seat is inserted between the other end of the wind power slip ring and the fixed nacelle, the fixed rods at the four corner positions of the connecting seat are synchronously inserted into the four corner reserved positions of the other end of the wind power slip ring, the fixed rods pass through the wind power slip ring and then pass through the four corner reserved positions of the other end of the first connecting frame, and the rotating nut is outside the fixed rods;

[0020] Step five, the fourth bolt is directly penetrated through to complete the fixation of the wind power slip ring between the connecting seat and the fixed nacelle, and the combined switching of the wind power slip ring is realized;

[0021] Step six, two protection frames are respectively attached to the mounting groove positions of the outer walls of the two second connecting rings through the second connecting frame, and the second bolts are sequentially penetrated through the second connecting frame, the second connecting ring and embedded into the wind power slip ring to complete the fixation between the protection frame, the second connecting ring and the wind power slip ring;

[0022] Step seven, the protection frame is placed on the outer wall of the support ring fixed in step four;

[0023] Step eight, when the wind power generation, the blade rotates clockwise with the air flow, the rotation will directly drive the blade rotation, the rotation of the blade will extract the gas outside the filter element, the gas passes through the filter element and actively flows into a pair of protective frame wrapped position, heat can pass through the heat dissipation cavity and directly discharge;

[0024] Step nine, the roller will fit and rotate along the support ring outer wall, after the support ring is supported, the gravity of the protective frame is avoided to increase the resistance of the rotating hub position.

[0025] Compared with the prior art, the beneficial effects of the present application are:

[0026] 1、The wind power slip ring of the present application is connected by the first connecting ring and the second connecting ring when the combination switching is connected, and is connected by the connecting seat and the fourth bolt when the wind power slip ring is connected with the fixed cabin, and after the connection, the installation groove position of the protective frame outside the second connecting ring can be directly wrapped by a pair of protective frames, the external area of the wind power slip ring can be directly wrapped by a pair of protective frames, and the area between the second connecting ring and the connecting seat can be directly wrapped by a pair of protective frames, so that the damage of the wind power slip ring position caused by foreign matters in the process of wind power generation is avoided.

[0027] 2、When a pair of protective frames are assumed and wrapped around the wind power slip ring, the second connecting ring directly drives the connected protective frame to rotate when the rotatable position of the wind power slip ring rotates with the rotating hub, the protective frame can be supported by the roller on the upper end of the support ring when the protective frame rotates, the rotation of the protective frame can synchronously drive the rotation of the blade, the rotation of the blade can extrude the gas inside the protective frame, the gas outside the blade can be continuously supplemented to the inside of the protective frame after being filtered by the filter element, the heat generated by the wind power slip ring inside the protective frame can pass through the heat dissipation cavity and be directly discharged, which can provide wrapping protection while avoiding heat accumulation, and the gravity of the protective frame is avoided to increase the resistance of the rotating hub position by supporting the roller. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the overall external structure diagram of the present application;

[0029] Figure 2 It is the wind power slip ring installation track diagram of the present application;

[0030] Figure 3 It is the Figure 2 It is the A area local enlarged view of the present application;

[0031] Figure 4 It is the heat dissipation track diagram of the present application;

[0032] Figure 5The schematic diagram of the installation track of the first connecting ring and the second connecting ring of the application;

[0033] Figure 6 The schematic diagram of the installation track of the roller of the application;

[0034] Figure 7 The schematic diagram of the installation track of the second bolt of the application;

[0035] Figure 8 The schematic diagram of the installation track of the Figure 7 The local enlarged view of the B area in the middle.

[0036] In the figure: 1, rotating hub; 2, protection frame; 3, connecting seat; 4, filter core; 5, first connecting ring; 6, second connecting ring; 7, wind power slip ring; 8, first connecting frame; 9, supporting ring; 11, first shielding ring; 12, blade; 13, second shielding ring; 14, fixed rod; 15, second connecting frame; 16, roller; 17, heat dissipation cavity; 18, first bolt; 19, second bolt; 20, third bolt; 21, installation groove; 22, fourth bolt. DETAILED DESCRIPTION

[0037] The application will be further described below in combination with specific embodiments.

[0038] As shown in the figure, the low-resistance combined switching structure for wind power slip ring of the embodiment includes protection frames 2 located at the upper and lower ends of the outside of the wind power slip ring 7, and the two protection frames 2 are mirror-distributed on the outside of the wind power slip ring 7, which can wrap the wind power slip ring 7 when the wind power slip ring 7 is used, can wrap the electric contact noble metal inside the wind power slip ring 7, can effectively improve the stability of the connection between the rotating hub 1 and the fixed nacelle in the wind turbine generator, improve the effect of wind power generation, and improve the service life of the wind turbine generator. Figure 1 Further, one side between the two protection frames 2 is provided with a supporting ring 9, as shown in the figure.

[0039] Figure 3 and Figure 4 One side of the supporting ring 9 is provided with a first connecting frame 8, and a heat dissipation cavity 17 is arranged between the first connecting frame 8 and the supporting ring 9, and the reserved heat dissipation cavity 17 position is convenient for heat dissipation, and the supporting ring 9 supported by the first connecting frame 8 can assist the support of the protection frame 2.

[0040] In order to facilitate the rotation of the protection frame 2, avoid the gravity of the protection frame 2 to increase the position resistance of the rotating hub 1, the other side between the two protection frames 2 is provided with a pair of second connecting rings 6, and the two second connecting rings 6 are connected with the protection frames 2 respectively, as shown in the figure. Figure 7 Figure 8 ​​As shown, the inner wall of the second connecting ring 6 is provided with a mounting groove 21, which can assist in connecting the protection frame 2. The outside of the mounting groove 21 is provided with a second connecting frame 15, which is welded and fixed to the protection frame 2. The second connecting frame 15 is connected to the mounting groove 21. The reserved mounting groove 21 facilitates the erection and transmission of the protection frame 2.

[0041] In addition, as Figure 6 shown, the protection frame 2 is provided with a roller 16 towards the outer wall of the support ring 9, and the roller 16 is fixedly connected to the protection frame 2 by bolts. After the protection frame 2 is erected and connected by the second connecting frame 15 and the mounting groove 21, the roller 16 can be erected on the upper end of the support ring 9 after the rotation of the rotating hub 1. The rotation of the support ring 9 itself can provide support for the protection frame 2.

[0042] As Figure 2 and Figure 5 shown, in order to facilitate the connection of the second connecting ring 6, the first connecting ring 5 and the rotating hub 1, the other side of the two second connecting rings 6 is provided with the first connecting ring 5, and the other side of the two first connecting rings 5 is provided with the rotating hub 1. A pair of first connecting rings 5 can wrap the rotating hub 1, and a pair of second connecting rings 6 can wrap the rotating position of the wind power slip ring 7.

[0043] In this embodiment, the two sides between the two first connecting rings 5 and the two second connecting rings 6 are penetrated by a pair of first bolts 18. The first connecting ring 5 and the second connecting ring 6 are penetrated by a third bolt 20. The first connecting ring 5 and the rotating hub 1 are fixedly penetrated by a second bolt 19. The second connecting ring 6 and the wind power slip ring 7 are fixedly penetrated by a second bolt 19. The connection between the rotating hub 1, the first connecting ring 5, the second connecting ring 6 and the wind power slip ring 7 is completed by penetrating the first bolt 18, the second bolt 19 and the third bolt 20 one by one.

[0044] It is worth mentioning that the second bolt 19 corresponding to the outside of the second connecting ring 6 penetrates the second connecting frame 15 before penetrating the second connecting ring 6. The second connecting ring 6 is fixedly penetrated by the second bolt 19, and the protection frame 2 is fixedly connected by the second bolt 19. The connection of the second bolt 19 can drive the protection frame 2 to rotate together with the rotating hub 1 after the second connecting ring 6 rotates.

[0045] In order to realize heat dissipation, the inner wall of the two protective frames 2 is provided with blades 12, which rotate clockwise with the protective frame 2. The other side of the protective frame 2 is provided with a filter core 4. After the air driving force generated by the rotation of the blade 12, the external gas passes through the protective frame 2 through the filter core 4. The heat wrapped by the protective frame 2 is discharged from the position of the heat dissipation cavity 17. The heat dissipation capacity can be provided at the same time, and the foreign matter in the external air is avoided to contact the wind power slip ring 7 and affect the normal use of the wind power slip ring 7, and the internal electric contact noble metal of the wind power slip ring 7 is avoided to be easily affected.

[0046] Further, the rotatable position of the wind power slip ring 7 connected with the rotating hub 1 is easy to contact foreign matter and cause the service life of the wind power slip ring 7 to be reduced. The lower end of the filter core 4 is provided with a first shielding ring 11, and the first shielding ring 11 is welded and fixed with the inner wall of the protective frame 2. The protective frame 2 directly drives the first shielding ring 11 to wrap and protect the rotatable position of the wind power slip ring 7 during installation.

[0047] In order to connect the wind power slip ring 7 with the fixed nacelle, one side of the wind power slip ring 7 is provided with a connecting seat 3, the connecting seat 3 is provided with a fixed rod 14 towards the four corner positions of the wind power slip ring 7, and the fixed rod 14 is welded and fixed with the connecting seat 3. The fixed rod 14 slides through the four corner positions of the wind power slip ring 7 and the first connecting frame 8. The penetration of the fixed rod 14 can facilitate the installation and connection of the connecting seat 3 and the first connecting frame 8. Fourth bolts 22 are provided through the front and rear ends of the connecting seat 3, and the fourth bolts 22 are screwed with the fixed nacelle through the connecting seat 3. After the connecting seat 3 is connected with the wind power slip ring 7 and the first connecting frame 8 synchronously, the connecting seat 3 is screwed with the fixed nacelle, so as to fix the wind power slip ring 7.

[0048] In order to avoid that the high-speed and frequent heat dissipation gas contacts the roller 16, the other side of the roller 16 is provided with a second shielding ring 13, and the second shielding ring 13 is welded and fixed with the inner wall of the protective frame 2. The second shielding ring 13 is attached to the side of the supporting ring 9 with the installation of the protective frame 2. The supporting ring 9 limits the flow of gas towards the roller 16. The heat dissipation gas flows out from the position of the heat dissipation cavity 17 through the shielding of the second shielding ring 13.

[0049] A mounting method of a low-resistance combined switching structure for a wind power slip ring, comprising the following steps:

[0050] Step one, the first connecting frame 8 and the supporting ring 9 are sleeved on the outside of the wind power slip ring 7.

[0051] Step two, a pair of first connecting ring 5 and a pair of second connecting ring 6 are respectively penetrated by two first bolts 18 on both sides, and after penetration, the outer rotating nut of the first bolt 18 realizes the fixation of a pair of first connecting ring 5 and a pair of second connecting ring 6, a pair of fixed first connecting ring 5 is sleeved outside the rotating hub 1, and a pair of fixed second connecting ring 6 is sleeved at one end of the wind power slip ring 7;

[0052] Step three, the second connecting ring 6 and the first connecting ring 5 are penetrated by the third bolt 20, and after penetration, the outer rotating nut of the third bolt 20 realizes the connection between the second connecting ring 6 and the first connecting ring 5, the second bolt 19 is embedded in the rotating hub 1 after penetrating the first connecting ring 5 to complete the fixation of a pair of first connecting ring 5, and the connection through the third bolt 20 realizes the connection between one end of the wind power slip ring 7 and the rotating hub 1;

[0053] Step four, when connecting the other end of the wind power slip ring 7 and the fixed nacelle, the other end of the wind power slip ring 7 and the fixed nacelle are inserted into the connecting seat 3, the fixed rod 14 at the four corner positions of the connecting seat 3 is synchronously inserted into the four corner reserved positions of the other end of the wind power slip ring 7, the fixed rod 14 passes through the wind power slip ring 7 and then passes through the four corner reserved positions of the other end of the first connecting frame 8, and the rotating nut is outside the fixed rod 14, which sequentially fixes the first connecting frame 8, the support ring 9, the wind power slip ring 7 and the connecting seat 3;

[0054] Step five, the wind power slip ring 7 is fixed by directly penetrating through the fourth bolt 22 between the connecting seat 3 and the fixed nacelle, realizing the combined switching of the wind power slip ring 7;

[0055] Step six, two protection frames 2 are respectively attached to the installation groove 21 positions of the outer walls of two second connecting rings 6 through second connecting frames 15, and the second bolts 19 are sequentially inserted into the wind power slip ring 7 after penetrating the second connecting frames 15 and the second connecting rings 6, thereby completing the fixation between the protection frames 2, the second connecting rings 6 and the wind power slip ring 7;

[0056] Step seven, the protection frame 2 puts the roller 16 on the outer wall of the support ring 9 fixed in step four, and at the same time, the second shielding ring 13 is placed on the side of the support ring 9 along with the protection frame 2, and a pair of protection frames 2 can wrap and protect the position of the wind power slip ring 7;

[0057] Step eight, during wind power generation, the blades rotate clockwise along with the air flow, which directly drives the rotation of the blades 12, and the rotation of the blades 12 extracts the gas outside the filter element 4, the gas passes through the filter element 4 and actively flows into the wrapped position of a pair of protection frames 2, and the gas contacts and actively cools the wind power slip ring 7, and the heat can pass through the heat dissipation cavity 17 and be directly discharged;

[0058] Step nine, when the protection frame 2 rotates and supports and dissipates heat for the wind power slip ring 7 position, the roller 16 will adhere to and rotate along the outer wall of the support ring 9, and after the support ring 9 is supported, the gravity of the protection frame 2 is avoided to increase the resistance of the rotating hub 1 position.

[0059] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other present or future technologies can provide. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other present or future technologies can provide. Where a range of values is provided, it is understood that every intervening value, to the smallest unit of value, is also contemplated. For example, if a range of 1 to 10 is stated, then 3.14 is also specifically acknowledged to be a possible value within the scope. The same applies to ranges of values expressed in a fractional way. It is intended, therefore, that subsequent configurations of this application will not be limited to the specific embodiments set forth herein, but will include all modifications to this concept that have the same purpose and same kind of effects associated therewith described or recognized by one with ordinary skill in the art. Therefore, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other present or future technologies can provide. Where a range of values is provided, it is understood that every intervening value, to the smallest unit of value, is also contemplated. For example, if a range of 1 to 10 is stated, then 3.14 is also specifically acknowledged to be a possible value within the scope. The same applies to ranges of values expressed in a fractional way. It is intended, therefore, that subsequent configurations of this application will not be limited to the specific embodiments set forth herein, but will include all modifications to this concept that have the same purpose and same kind of effects associated therewith described or recognized by one with ordinary skill in the art.

[0060] While the embodiments of the application have been shown and described, it is to be understood that many changes, modifications, substitutions, and alterations will occur to one skilled in the art after studying the disclosure.

Claims

1. A low-resistance combined transition structure for wind turbine slip rings, characterized in that, The system includes protective frames (2) located at the upper and lower ends of the wind turbine slip ring (7). A support ring (9) is provided on one side between the two protective frames (2). A first connecting frame (8) with a heat dissipation cavity (17) is provided on one side of the support ring (9). A pair of second connecting rings (6) with mounting grooves (21) are provided on the other side between the two protective frames (2). A second connecting frame (15) welded and fixed to the protective frame (2) is provided outside the mounting groove (21). Rollers (16) are provided on the outer wall of the protective frame (2) facing the support ring (9). Blades (12) are provided on the inner wall of the two protective frames (2).

2. The low-resistance combined transition structure for wind power slip rings according to claim 1, characterized in that, A filter element (4) is provided on the other side inside the protective frame (2).

3. The low-resistance combined transition structure for wind power slip rings according to claim 2, characterized in that, A first connecting ring (5) is provided on the other side of the two second connecting rings (6).

4. The low-resistance combined transition structure for wind power slip rings according to claim 3, characterized in that, The second connecting bracket (15) is connected to the mounting slot (21) in a slotted manner.

5. The low-resistance combined transition structure for wind power slip rings according to claim 4, characterized in that, The lower end of the filter element (4) is provided with a first shielding ring (11), and the first shielding ring (11) is welded and fixed to the inner wall of the protective frame (2).

6. The low-resistance combined transition structure for wind power slip rings according to claim 5, characterized in that, The two first connecting rings (5) and the two second connecting rings (6) are connected by a pair of first bolts (18) on both sides, the first connecting rings (5) and the second connecting rings (6) are connected by a third bolt (20), and the first connecting rings (5) are fixed to the rotating hub (1) by a second bolt (19).

7. A low-resistance combined transition structure for wind power slip rings according to claim 6, characterized in that, The second bolt (19) corresponding to the outside of the second connecting ring (6) penetrates the second connecting frame (15) before penetrating the second connecting ring (6).

8. The low-resistance combined transition structure for wind power slip rings according to claim 7, characterized in that, A connecting seat (3) is provided on one side of the wind turbine slip ring (7). A fixing rod (14) is provided at each of the four corners of the connecting seat (3) facing the wind turbine slip ring (7). The fixing rod (14) is welded and fixed to the connecting seat (3). The fixing rod (14) slides through the four corners of the wind turbine slip ring (7) and the first connecting frame (8). A fourth bolt (22) is provided through the front and rear ends of the connecting seat (3).

9. A low-resistance combined transition structure for wind power slip rings according to claim 8, characterized in that, A second shielding ring (13) is provided on the other side of the outside of the roller (16) and welded and fixed to the inner wall of the protective frame (2).

10. An installation method based on the low-resistance combined transition structure for wind power slip rings as described in claim 9, characterized in that, Includes the following steps: Step 1: Fit the first connecting frame (8) and support ring (9) onto the outside of the wind turbine slip ring (7); Step 2: A pair of first connecting rings (5) and a pair of second connecting rings (6) are respectively passed through the first bolts (18) on both sides. A pair of fixed first connecting rings (5) are fitted on the outside of the rotating hub (1), and a pair of fixed second connecting rings (6) are fitted on one end of the wind turbine slip ring (7). Step 3: A third bolt (20) passes through the second connecting ring (6) and the first connecting ring (5). The nut is rotated outside the third bolt (20) to achieve the connection between the second connecting ring (6) and the first connecting ring (5). The second bolt (19) passes through the first connecting ring (5) and is embedded in the rotating hub (1) to complete the fixation of a pair of first connecting rings (5). Step 4: Insert the connecting seat (3) between the other end of the wind turbine slip ring (7) and the fixed nacelle. Simultaneously insert the fixing rods (14) at the four corners of the connecting seat (3) into the reserved positions at the four corners of the other end of the wind turbine slip ring (7). After passing through the wind turbine slip ring (7), the fixing rods (14) pass through the reserved positions at the four corners of the other end of the first connecting frame (8). Rotate the nut outside the fixing rod (14). Step 5: The wind turbine slip ring (7) is fixed between the connecting seat (3) and the fixed nacelle by passing through the fourth bolt (22), thus realizing the combination and transfer of the wind turbine slip ring (7); Step 6: The two protective frames (2) are respectively attached to the mounting grooves (21) on the outer wall of the two second connecting rings (6) through the second connecting bracket (15). The second bolt (19) passes through the second connecting bracket (15) and the second connecting ring (6) in sequence and is embedded in the wind turbine slip ring (7) to complete the fixing between the protective frame (2), the second connecting ring (6) and the wind turbine slip ring (7); Step 7: Protective frame (2) places roller (16) on the outer wall of the support ring (9) fixed in step 4; Step 8: When generating wind power, the blades rotate clockwise with the airflow. The rotation will directly drive the blades (12) to rotate. The rotation of the blades (12) will draw in the gas outside the filter element (4). The gas passes through the filter element (4) and actively flows into the position of the protective frame (2). The heat can pass through the heat dissipation cavity (17) and be directly discharged. Step 9: The roller (16) will adhere to and rotate along the outer wall of the support ring (9). After the support ring (9) provides support, the weight of the protective frame (2) will prevent the rotation of the hub (1) from increasing the resistance.

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