Wind power slip ring leak-proof sealing structure

Abstract

The utility model relates to wind power slip ring technical field especially relates to a wind power slip ring oil leakage prevention sealing structure, including first rubber seal ring, first rubber seal ring inside is provided with second rubber seal ring, second rubber seal ring surface is provided with sealing mechanism, sealing mechanism includes the support ring of fixed connection in first rubber seal ring inboard, the first sealing block of fixed connection in support ring inboard, the utility model discloses through setting up first rubber seal ring, second rubber seal ring and the rotating sealing pair of first sealing block and second sealing block constitute, form multiple sealed barriers, effectively prevent lubricating oil from between dynamic and static parts leak, set up oil storage groove and guide pipe on the surface of first sealing block, can guide back the lubricating oil of seepage to the inside slip ring, realize oil circulation utilization, provide sustained lubrication for the rotation between sealing block simultaneously, reduce abrasion.

Description

Technical Field

[0001] This utility model relates to the field of wind power slip ring technology, and in particular to a wind power slip ring oil leakage prevention sealing structure. Background Technology

[0002] As a critical energy and signal transmission component in wind turbine generators, the core function of the slip ring is to achieve electrical connection between the stationary part of the nacelle and the rotating part of the rotor. To ensure long-term stable operation of the slip ring, it is usually filled with high-performance lubricating oil or grease to reduce wear, dissipate heat, and prevent oxidation of electrical contact points. To prevent lubricating oil leakage, a sealing structure is added to the wind turbine slip ring.

[0003] Currently, oil leakage prevention seals for wind turbine slip rings mostly rely on contact-type sealing structures, the most typical of which are annular elastic seals such as O-rings and plug seals. These sealing structures utilize the compression deformation of the seal after assembly to form a tight contact between the stationary component and the rotating shaft, thus creating a physical barrier to prevent lubricating oil leakage. This solution is widely used in industrial fields due to its simple structure, low cost, and ease of installation.

[0004] Existing sealing structures, when used to seal the lubricating oil of wind turbine slip rings, suffer from constant dynamic friction and wear between the seal ring and the rotating shaft surface due to the continuous rotation of the slip ring's rotor at a certain speed. Over long-term operation, the seal material gradually deteriorates due to mechanical wear, leading to a reduction in its cross-sectional dimensions and pre-compression. Simultaneously, lubricating oil, temperature changes, and environmental media accelerate the aging, hardening, or cracking of the seal material, causing it to lose elasticity and fail to tightly adhere to the rotating shaft surface, ultimately resulting in seal failure.

[0005] Therefore, in response to the problem that conventional sealing rings are prone to failure in the existing sealing structure, a leak-proof sealing structure for wind turbine slip rings can be designed to extend the service life of the sealing structure and enable the wind turbine slip rings to operate stably for a long time. Utility Model Content

[0006] To overcome the problem that existing sealing structures using conventional sealing rings are prone to seal failure.

[0007] The technical solution of this utility model is: a wind turbine slip ring oil leakage prevention sealing structure, including a first rubber sealing ring, a second rubber sealing ring disposed inside the first rubber sealing ring, a sealing mechanism disposed on the surface of the second rubber sealing ring, the sealing mechanism including a support ring fixedly connected to the inner side of the first rubber sealing ring, a first sealing block fixedly connected to the inner side of the support ring, and a second sealing block rotatably connected to one side of the first sealing block.

[0008] Preferably, during installation, the first and second rubber sealing rings are pressed into the stationary and rotating parts of the wind turbine slip ring, respectively, and the overall structure is fixed by the mounting ring plate and connecting plate. The first rubber sealing ring, support ring, and first sealing plug are connected to the stationary part and do not rotate; the second rubber sealing ring and second sealing plug are connected to the rotating part and rotate with the rotor. The first and second rubber sealing rings form a combination of static and dynamic seals to prevent lubricating oil leakage. Multiple bends and sealing gaps are formed between the first and second sealing blocks to further prevent oil leakage. Some lubricating oil seeps into the gaps between the sealing blocks, providing lubrication. The oil that seeps into the oil reservoir flows back to the slip ring through the conduit and one-way valve, realizing oil circulation. The rotating part drives the ring toothed plate to rotate, which drives the fan to rotate through gear transmission, forcing convection heat dissipation. Together with the heat-conducting plate and heat-conducting column, the internal heat is quickly discharged to maintain the low-temperature operation of the system. The low-temperature lubricating oil and the high-temperature oil at the sealing gaps form a temperature difference, which promotes the flow of oil along the conduit, ensuring that the sealing interface is always lubricated by low-temperature oil, improving the sealing life and operational stability.

[0009] Preferably, the sealing mechanism further includes an oil reservoir formed on the surface of the first sealing block, a conduit connected to one side of the oil reservoir, and a one-way valve sleeved on the surface of the conduit.

[0010] Preferably, the first sealing block and the second sealing block are in contact with each other, and the second sealing block is fixedly connected to the second rubber sealing ring.

[0011] Preferably, a mounting ring plate is fixedly connected to one side of the support ring, and a mounting groove is provided on one side of the mounting ring plate, and a heat dissipation mechanism is provided on the inner side of the mounting ring plate.

[0012] Preferably, the heat dissipation mechanism includes a heat-conducting plate disposed on the inner side of the mounting ring plate and a heat-conducting column fixedly connected to one side of the heat-conducting plate.

[0013] Preferably, the heat dissipation mechanism further includes an annular toothed plate disposed at the center of the mounting ring plate, a rotating rod disposed on the surface of the annular toothed plate, a gear fixedly connected to the surface of the rotating rod, and a fan fixedly connected to one side of the rotating rod.

[0014] Preferably, a support plate is provided on one side of the first sealing block, a connecting plate is fixedly connected to one side of the support plate, a dust cover is fixedly connected to the surface of the support plate by bolts, and a connecting hole is provided on one side of the connecting plate.

[0015] The beneficial effects of this utility model are as follows: By setting a first rubber sealing ring, a second rubber sealing ring, and a rotating sealing pair composed of a first sealing block and a second sealing block, multiple sealing barriers are formed, effectively preventing lubricating oil from leaking between the moving and stationary parts. An oil storage groove and a conduit are set on the surface of the first sealing block, which can guide the infiltrated lubricating oil back into the slip ring, realizing oil recycling and providing continuous lubrication for the rotation between the sealing blocks, reducing wear. The heat dissipation mechanism composed of a heat-conducting plate, a heat-conducting column, and a fan effectively dissipates the heat inside the slip ring, preventing high temperature from causing aging of the seals and extending the service life of the sealing structure. By setting a removable dust cover, dust is prevented from entering the heat dissipation mechanism, ensuring long-term stable operation of the system and facilitating cleaning and maintenance. The installation ring plate and support plate and other structures achieve reliable connection with the moving and stationary parts of the slip ring. The overall structure is compact, easy to install and disassemble, and suitable for the long-term operating environment of wind power slip rings. Attached Figure Description

[0016] Figure 1 The image shown is a perspective view of a wind turbine slip ring oil leakage prevention sealing structure according to this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional schematic of Embodiment 1 of the wind turbine slip ring oil leakage prevention sealing structure of this utility model;

[0018] Figure 3 The diagram shown is a three-dimensional schematic representation of Embodiment 2 of the wind turbine slip ring oil leakage prevention sealing structure of this utility model;

[0019] Figure 4 The diagram shown is a three-dimensional schematic representation of Embodiment 3 of the wind turbine slip ring oil leakage prevention sealing structure of this utility model;

[0020] Figure 5 This invention presents a wind turbine slip ring oil leakage prevention sealing structure. Figure 3 A magnified view of A in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. First rubber sealing ring; 2. Second rubber sealing ring; 3. Sealing mechanism; 31. Support ring; 32. First sealing block; 33. Second sealing block; 34. Oil reservoir; 35. Conduit; 36. One-way valve; 4. Mounting ring plate; 5. Heat dissipation mechanism; 51. Heat-conducting plate; 52. Heat-conducting column; 53. Annular toothed plate; 54. Rotating rod; 55. Gear; 56. Fan; 6. Support plate; 7. Connecting plate; 8. Dust cover. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] Please see Figure 1and Figure 2 This utility model provides an embodiment of a wind turbine slip ring oil leakage prevention sealing structure, including a first rubber sealing ring 1, a second rubber sealing ring 2 disposed inside the first rubber sealing ring 1, a sealing mechanism 3 disposed on the surface of the second rubber sealing ring 2, the sealing mechanism 3 including a support ring 31 fixedly connected to the inner side of the first rubber sealing ring 1, a first sealing block 32 fixedly connected to the inner side of the support ring 31, a second sealing block 33 rotatably connected to one side of the first sealing block 32, the sealing mechanism 3 also includes an oil storage groove 34 opened on the surface of the first sealing block 32, a conduit 35 communicating with one side of the oil storage groove 34, a one-way valve 36 sleeved on the surface of the conduit 35, the first sealing block 32 and the second sealing block 33 being in contact with each other, and the second sealing block 33 being fixedly connected to the second rubber sealing ring 2.

[0025] The first rubber sealing ring 1 is installed on the stationary part of the wind turbine slip ring to form the first oil leakage barrier. It has good elasticity and oil resistance to ensure effective sealing under static conditions. The second rubber sealing ring 2 serves as the second sealing barrier. Fixedly connected to the rotating component, the second sealing block 33 rotates with it, enhancing sealing reliability and preventing lubricating oil leakage from the rotating side. The second sealing block 33 is rotatably connected to the first sealing block 32 via a sealing bearing. Multiple bends are formed at the contact point between the first and second sealing blocks 32 and 33, effectively reducing lubricating oil leakage. The conduit 35 extends from the end away from the oil reservoir 34 to the end of the second sealing block 33 away from the first sealing block 32. The conduit 35 is fixedly connected to the second sealing block 33. A support ring 31 is fixed inside the first rubber sealing ring 1, providing structural support and ensuring the seal maintains a stable shape during installation and use. The first sealing block 32 and the second sealing block 33 form a rotating sealing pair. The second sealing block 33 rotates with the rotating component, forming multiple bends between itself and the first sealing block 32, effectively blocking lubricating oil leakage. The oil reservoir 34 collects and temporarily stores lubricating oil that seeps into the sealing gaps. The conduit 35 guides the lubricating oil in the oil reservoir 34 back into the wind turbine slip ring, forming a circulation. During operation, the first rubber sealing ring 1 and the second rubber sealing ring 2 are pressed into the positions requiring sealing. The first rubber sealing ring 1, the support ring 31, and the first sealing block 32 are fixedly connected to the stationary part of the wind turbine slip ring and do not rotate. The second rubber sealing ring 2 and the second sealing block 33 are fixedly connected to the rotating part of the wind turbine slip ring and rotate. Whether rotating or not, the first rubber sealing ring 1 and the second rubber sealing ring 2 will not experience rotational wear, thus ensuring the sealing effect at the first rubber sealing ring 1 and the second rubber sealing ring 2. During rotation, the lubricating oil will enter the gap between the first sealing block 32 and the second sealing block 33 to lubricate the relative rotation between the first sealing block 32 and the second sealing block 33. The lubricating oil that enters the oil reservoir 34 will flow into the inside of the support ring 31 through the conduit 35.

[0026] Example 2

[0027] Please see Figure 3 and Figure 5 The difference from Embodiment 1 is that a mounting ring plate 4 is fixedly connected to one side of the support ring 31, a mounting groove is opened on one side of the mounting ring plate 4, and a heat dissipation mechanism 5 is provided inside the mounting ring plate 4. The heat dissipation mechanism 5 includes a heat-conducting plate 51 disposed inside the mounting ring plate 4, a heat-conducting column 52 fixedly connected to one side of the heat-conducting plate 51, and the heat dissipation mechanism 5 also includes an annular toothed plate 53 disposed at the axis of the mounting ring plate 4, a rotating rod 54 disposed on the surface of the annular toothed plate 53, a gear 55 fixedly connected to the surface of the rotating rod 54, and a fan 56 fixedly connected to one side of the rotating rod 54.

[0028] The heat-conducting plate 51 is fixedly connected to the first sealing block 32. The end of the heat-conducting column 52 away from the heat-conducting plate 51 extends to the side of the first sealing block 32 away from the heat-conducting plate 51, and is fixedly connected to the first sealing block 32. The annular toothed plate 53 is fixedly connected to the second sealing block 33. The end of the rotating rod 54 away from the fan 56 extends to the side of the heat-conducting plate 51 away from the fan 56 and is rotatably connected to the first sealing block 32 via a bearing. The heat-conducting plate 51 is also rotatably connected to the rotating rod 54 via a bearing. The gear 55 meshes with the annular toothed plate 53. The mounting ring plate 4 and mounting groove are used to fix the entire sealing structure to the stationary part of the wind turbine slip ring, providing an installation interface for easy disassembly and maintenance. The heat-conducting column 52 and the heat-conducting plate 51 conduct the heat generated by the lubricating oil inside the wind turbine slip ring to the outside, preventing... To prevent high temperatures from causing aging of the seals, gear 55 and rotating rod 54 transmit the rotational motion of the annular toothed plate 53 to the fan 56. The fan 56 forces convection to dissipate heat, enhancing the heat dissipation effect of the heat-conducting plate 51 and the heat-conducting column 52, and maintaining the system's low-temperature operation. During operation, the rotating part of the wind turbine slip ring drives the annular toothed plate 53 to rotate, which in turn drives the fan 56 to rotate through gear 55. This causes the heat conducted by the heat-conducting column 52 and the heat-conducting plate 51 to dissipate quickly, thereby rapidly cooling the lubricating oil inside the wind turbine slip ring and extending the service life of the first rubber sealing ring 1 and the second rubber sealing ring 2. At the same time, the temperature difference between the low-temperature lubricating oil and the high-temperature lubricating oil in the gap between the first sealing block 32 and the second sealing block 33 will drive it to flow smoothly out along the guide tube 35, ensuring that the low-temperature lubricating oil can continuously lubricate the gap.

[0029] Example 3

[0030] Please see Figure 4 The difference from Embodiment 1 is that a support plate 6 is provided on one side of the first sealing block 32, a connecting plate 7 is fixedly connected to one side of the support plate 6, a dust cover 8 is fixedly connected to the surface of the support plate 6 by bolts, and a connecting hole is opened on one side of the connecting plate 7.

[0031] The support plate 6 is fixedly connected to the annular toothed plate 53, and the dust cover 8 is also fixedly connected to the mounting ring plate 4 by bolts. Mounting holes are provided on one side of the mounting ring plate 4, the support plate 6, and the dust cover 8. When working, the dust cover 8 is installed to cover the heat dissipation mechanism 5 and to protect it from dust, ensuring the normal operation of the internal structure and preventing it from being bothered by dust. The detachable design makes it easy to clean the dust cover 8 regularly.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A wind turbine slip ring oil leakage prevention sealing structure, comprising a first rubber sealing ring (1), characterized in that: The first rubber sealing ring (1) is provided with a second rubber sealing ring (2) inside. The surface of the second rubber sealing ring (2) is provided with a sealing mechanism (3). The sealing mechanism (3) includes a support ring (31) fixedly connected to the inner side of the first rubber sealing ring (1), a first sealing block (32) fixedly connected to the inner side of the support ring (31), a second sealing block (33) rotatably connected to one side of the first sealing block (32), an oil storage groove (34) opened on the surface of the first sealing block (32), a conduit (35) connected to one side of the oil storage groove (34), and a one-way valve (36) sleeved on the surface of the conduit (35).

2. The wind turbine slip ring oil leakage prevention sealing structure according to claim 1, characterized in that: The first sealing block (32) and the second sealing block (33) are in contact with each other, and the second sealing block (33) is fixedly connected to the second rubber sealing ring (2).

3. The wind turbine slip ring oil leakage prevention sealing structure according to claim 1, characterized in that: The support ring (31) is fixedly connected to a mounting ring plate (4) on one side. The mounting ring plate (4) has a mounting groove on one side and a heat dissipation mechanism (5) is provided inside the mounting ring plate (4).

4. The wind turbine slip ring oil leakage prevention sealing structure according to claim 3, characterized in that: The heat dissipation mechanism (5) includes a heat-conducting plate (51) disposed inside the mounting ring plate (4) and a heat-conducting column (52) fixedly connected to one side of the heat-conducting plate (51).

5. The wind turbine slip ring oil leakage prevention sealing structure according to claim 3, characterized in that: The heat dissipation mechanism (5) further includes an annular toothed plate (53) disposed at the center of the mounting ring plate (4), a rotating rod (54) disposed on the surface of the annular toothed plate (53), a gear (55) fixedly connected to the surface of the rotating rod (54), and a fan (56) fixedly connected to one side of the rotating rod (54).

6. The wind turbine slip ring oil leakage prevention sealing structure according to claim 2, characterized in that: A support plate (6) is provided on one side of the first sealing block (32), and a connecting plate (7) is fixedly connected to one side of the support plate (6). A dust cover (8) is fixedly connected to the surface of the support plate (6) by bolts, and a connecting hole is provided on one side of the connecting plate (7).

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