Insulation tube sealing insulation enhanced wind power slip ring

Abstract

The utility model discloses an insulation tube sealing insulation enhanced wind power slip ring, which relates to the technical field of wind power slip rings and comprises a slip ring hollow shaft, a PE conducting ring, a plurality of insulation spacer rings, an L conducting ring, a K conducting ring, an M conducting ring, an M conducting column, an L conducting column, a K conducting column, an insulation tube and a sealing glue layer. According to the wind power slip ring provided by the utility model, the conductive ring is additionally provided with the positioning seam allowance used for installing and positioning the insulating tube; on one hand, the problem of positioning accuracy of the insulating tube is solved, so that the uniformity of sealing glue gaps is improved, the insulating sealing performance is improved, on the other hand, all the gaps can be filled with glue, and meanwhile, the dynamic balance accuracy and the operation stability of the slip ring are improved; the positioning seam allowance is arranged on the conducting ring, and the root part of the insulating tube is embedded into the conducting ring, so that the fixing strength is improved, the insulating sealing performance between phase rings is also enhanced, the slip ring runs more stably and reliably, and the electrical fault of the slip ring is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power slip rings, in particular to an insulating tube sealed insulation enhanced wind power slip ring. Background Art

[0002] When in use, the wind turbine slip ring is installed on the high-speed rotating main shaft of the wind turbine, and is responsible for the transmission of external electric energy of the wind turbine and the external control of the generator excitation. At the same time, the wind turbine slip ring is arranged as a whole in the slip ring room. Because the sealing level of the slip ring room is low, the dynamic balance and insulation characteristics of the slip ring are required to be high, and the sealing characteristics inside the slip ring and the uniformity of the internal sealing glue also directly affect the insulation characteristics of the slip ring. The slip ring body is composed of a conductive ring, a conductive column and an insulating tube, and the insulating tube is sealed with glue inside and outside. Since the glue has a certain viscosity and fluidity, the proper arrangement of the insulating tube will affect the overall dynamic balance characteristics of the conductive ring, the internal insulation sealing, the electrical characteristics and the running stability. In addition, due to the poor sealing of the slip ring or the uneven distribution of the sealing glue, external moisture enters the inner cavity, resulting in low insulation and electrical failure, which ultimately causes the slip ring failure to cause the unit to shut down, resulting in immeasurable economic losses and safety hazards.

[0003] In the prior art, the installation of the insulating tube is not fixed in position. During installation, the gap between the insulating tube and the conductive column and the gap between the insulating tube and the conductive ring are uneven, which ultimately leads to poor glue fluidity during sealing. The uneven glue filling causes a certain cavity that affects the dynamic balance and insulation properties. Utility Model Content

[0004] The purpose of the utility model is to provide an insulating tube sealed insulation enhanced wind power slip ring to solve the problem that the insulating tube in the prior art proposed in the above background technology is not installed with positioning and fixation, and the gap between the insulating tube and the conductive column and the gap between the insulating tube and the conductive ring are uneven during installation, which ultimately leads to poor glue fluidity during sealing and uneven glue filling causing certain cavities that affect dynamic balance and insulation characteristics.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an insulating tube sealed insulation enhanced wind power slip ring, comprising a cylindrical slip ring hollow shaft and a main shaft baffle extending radially outward at the right end thereof, a PE conductive ring is arranged at the outer edge of the main shaft baffle by bolts; a first insulating spacer ring, an M conductive ring, a second insulating spacer ring, an L conductive ring, a third insulating spacer ring, a K conductive ring, and an insulating cover are sequentially sleeved on the outer side of the slip ring hollow shaft along its axial direction from right to left, the insulating cover is connected and fixed to the slip ring hollow shaft by bolts, and M conductive columns, L conductive columns, and K conductive columns are inserted in a ring-shaped arrangement on the same circumference of the left side of the insulating cover; and the M conductive column is connected to the M conductive ring, the L conductive column is connected to the L conductive ring, and the K conductive column is connected to the K conductive ring.

[0006] Preferably, an insulating sleeve is sleeved on the outer side wall of the slip ring hollow shaft between the first insulating spacer ring, the M conductive ring, the second insulating spacer ring, the L conductive ring, the third insulating spacer ring, the K conductive ring and the insulating cover plate.

[0007] Preferably, the M conductive column passes through the insulating cover plate, the K conductive ring, the third insulating spacer ring, the L conductive ring, and the second insulating spacer ring in sequence, and a conductive column plug with a reduced diameter is provided at the right end; the M conductive ring is provided with a positioning hole at a position corresponding to the M conductive column, and a positioning stop is provided on the left side of the positioning hole; the conductive column plug can be inserted into the positioning hole with an interference fit; the step surface of the conductive column plug and the M conductive column directly abut against the positioning stop.

[0008] Preferably, an insulating tube is sleeved on the outer side of the M conductive column, and the right end of the insulating tube directly abuts against the positioning stop, and a sealing glue layer is provided on the outer side of the insulating tube.

[0009] Preferably, the structure of the L conductive ring is the same as that of the M conductive ring, and a positioning hole and a positioning stop are provided at the corresponding positions of the L conductive column; the structure of the L conductive column is the same as that of the M conductive column and passes through the insulating cover plate, the K conductive ring, and the third insulating spacer ring in sequence, and an insulating tube and a sealing layer are also provided on the outside of the L conductive column.

[0010] Preferably, the structure of the K conductive ring is the same as that of the M conductive ring, and a positioning hole and a positioning stop are provided at the corresponding positions of the K conductive column; the structure of the K conductive column is the same as that of the M conductive column and passes through the insulating cover plate, and an insulating tube and a sealing layer are also provided on the outside of the K conductive column.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model provides an insulating tube sealed insulation enhanced wind power slip ring, in which a positioning stop is added on the conductive ring for installation and positioning of the insulating tube, which solves the problem of positioning accuracy of the insulating tube and thus improves the uniformity of the sealing gap and the insulation sealing, and on the other hand, each gap can be filled with glue, thereby improving the accuracy of dynamic balance and operation stability of the slip ring; the positioning stop is provided on the conductive ring, and the root of the insulating tube is embedded in the conductive ring, which improves the fixing strength and also enhances the insulation sealing between each phase ring, so that the slip ring runs more smoothly and reliably, thereby reducing electrical failures of the slip ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the axonometric drawing of the utility model;

[0014] Figure 2 for Figure 1 Main view;

[0015] Figure 3 for Figure 2 Left view;

[0016] Figure 4 for Figure 3 Sectional view of AA in the middle;

[0017] Figure 5 for Figure 4 Enlarged view of middle B;

[0018] Figure 6 for Figure 4 Enlarged view of middle C;

[0019] In the figure: slip ring hollow shaft -1, spindle baffle -11, insulating sleeve -12, PE conductive ring -2, first insulating spacer ring -31, second insulating spacer ring -32, third insulating spacer ring -33, M conductive ring -4, positioning socket -41, positioning stop -42, L conductive ring -5, K conductive ring -6, insulating cover -7, M conductive column -8, conductive column plug -81, insulating tube -82, sealing layer -83, L conductive column -9, K conductive column -10. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution in the embodiments of the present utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Please refer to Figure 1-6 , Figure 1 This is the axonometric drawing of the utility model; Figure 2 for Figure 1 Main view; Figure 3 for Figure 2 Left view; Figure 4 for Figure 3 Sectional view of AA in the middle; Figure 5 for Figure 4 Enlarged view of middle B; Figure 6 for Figure 4 Enlarged view of C in the middle.

[0022] The utility model provides an insulating tube sealed insulation enhanced wind power slip ring, comprising a slip ring hollow shaft 1 which is arranged in a cylindrical shape, and a main shaft baffle 11 which is radially extended outward is arranged at the right end thereof, and a PE conductive ring 2 is arranged at the outer edge of the main shaft baffle 11 by bolts; an insulating spacer 12 is sleeved on the outer wall of the slip ring hollow shaft 1, and a first insulating spacer ring 31, an M conductive ring 4, a second insulating spacer ring 32, an L conductive ring 5, a third insulating spacer ring 33, a K conductive ring 6, and an insulating cover plate 7 are sleeved on the outer wall of the insulating spacer 12 along its axial direction from right to left in sequence, the insulating cover plate 7 is connected and fixed to the slip ring hollow shaft 1 by bolts, and three conductive columns of the same specifications are inserted in an annular arrangement on the same circumference of the left side of the insulating cover plate 7, which are M conductive columns 8, L conductive columns 9, and K conductive columns 10, respectively, and the M conductive column 8 is connected to the M conductive ring 4, the L conductive column 9 is connected to the L conductive ring 5, and the K conductive column 10 is connected to the K conductive ring 6.

[0023] The M conductive ring 4 is provided with a positioning socket 41 at a position corresponding to the M conductive column 8, and a positioning stop 42 is provided on the left side of the positioning socket 41; the M conductive column 8 passes through the insulating cover plate 7, the K conductive ring 6, the third insulating spacer ring 33, the L conductive ring 5, and the second insulating spacer ring 32 in sequence, and a conductive column plug 81 with a reduced diameter is provided at the right end of the M conductive column 8, and the conductive column plug 81 can be inserted into the positioning socket 41 with an interference fit, and at the same time, the conductive column plug 81 and the step surface of the M conductive column 8 directly abut against the positioning stop 42, the outer side of the M conductive column 8 is sleeved with an insulating tube 82, and the right end of the insulating tube 82 directly abuts against the positioning stop 42, and at the same time, a sealing layer 83 is provided on the outer side of the insulating tube 82, and the M conductive column 8 and the insulating cover plate 7, the K conductive ring 6, the third insulating spacer ring 33, the L conductive ring 5, and the second insulating spacer ring 32 are sealed and insulated respectively by the sealing layer 83.

[0024] The structure of the L conductive ring 5 is the same as that of the M conductive ring 4, and a positioning hole 41 and a positioning stop 42 are provided at the corresponding position of the L conductive column 9; the structure of the L conductive column 9 is the same as that of the M conductive column 8 and passes through the insulating cover plate 7, the K conductive ring 6, and the third insulating spacer ring 33 in sequence, and an insulating tube 82 and a sealing layer 83 are also provided on the outside of the L conductive column 9.

[0025] The structure of the K conductive ring 6 is the same as that of the M conductive ring 4, and a positioning hole 41 and a positioning stop 42 are provided at the corresponding position of the K conductive column 10; the structure of the K conductive column 10 is the same as that of the M conductive column 8 and passes through the insulating cover 7, and an insulating tube 82 and a sealing layer 83 are also provided on the outside of the K conductive column 10.

[0026] The utility model provides an insulating tube sealed insulation enhanced wind power slip ring, in which a positioning stop is added on the conductive ring for installation and positioning of the insulating tube, which solves the problem of positioning accuracy of the insulating tube and thus improves the uniformity of the sealing gap and the insulation sealing, and on the other hand, each gap can be filled with glue, thereby improving the accuracy of dynamic balance and operation stability of the slip ring; the positioning stop is provided on the conductive ring, and the root of the insulating tube is embedded in the conductive ring, which improves the fixing strength and also enhances the insulation sealing between each phase ring, so that the slip ring runs more smoothly and reliably, thereby reducing electrical failures of the slip ring.

[0027] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, it can be understood by ordinary technicians in this field that all other embodiments obtained by making various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model and without making creative work, all belong to the scope of protection of the utility model.

Claims

1. An insulating tube sealed insulation enhanced wind power slip ring, characterized in that: The invention comprises a slip ring hollow shaft (1) which is arranged in a cylindrical shape and a main shaft baffle (11) which protrudes radially outward is arranged at the right end thereof; a PE conductive ring (2) is arranged at the outer edge of the main shaft baffle (11) by means of bolts; a first insulating spacer ring (31), an M conductive ring (4), a second insulating spacer ring (32), an L conductive ring (5), a third insulating spacer ring (33), a K conductive ring (6), and an insulating cover plate (7) are sequentially sleeved on the outer side of the slip ring hollow shaft (1) along its axial direction from right to left; the insulating cover plate (7) is connected and fixed to the slip ring hollow shaft (1) by means of bolts; an M conductive column (8), an L conductive column (9), and a K conductive column (10) are inserted in an annular arrangement on the same circumference of the left side of the insulating cover plate (7); and the M conductive column (8) is connected to the M conductive ring (4), the L conductive column (9) is connected to the L conductive ring (5), and the K conductive column (10) is connected to the K conductive ring (6).

2. The insulating tube sealed insulation enhanced wind power slip ring according to claim 1, characterized in that: An insulating spacer (12) is sleeved on the outer side wall of the slip ring hollow shaft (1) between the first insulating spacer ring (31), the M conductive ring (4), the second insulating spacer ring (32), the L conductive ring (5), the third insulating spacer ring (33), the K conductive ring (6), and the insulating cover plate (7).

3. The insulating tube sealed insulation enhanced wind power slip ring according to claim 2 is characterized in that: The M conductive column (8) sequentially passes through the insulating cover plate (7), the K conductive ring (6), the third insulating spacer ring (33), the L conductive ring (5), and the second insulating spacer ring (32), and is provided with a conductive column plug (81) with a reduced diameter at the right end; the M conductive ring (4) is provided with a positioning socket (41) at a position corresponding to the M conductive column (8), and a positioning stop (42) is provided on the left side of the positioning socket (41); the conductive column plug (81) can be inserted into the positioning socket (41) with an interference fit; the step surface of the conductive column plug (81) and the M conductive column (8) directly abuts against the positioning stop (42).

4. The insulating tube sealed insulation enhanced wind power slip ring according to claim 3 is characterized by: An insulating tube (82) is sleeved on the outer side of the M conductive column (8), and the right end of the insulating tube (82) directly abuts against the positioning stop (42), and a sealing glue layer (83) is provided on the outer side of the insulating tube (82).

5. The insulating tube sealed insulation enhanced wind power slip ring according to claim 4, characterized in that: The structure of the L conductive ring (5) is the same as that of the M conductive ring (4), and a positioning hole (41) and a positioning stop (42) are provided at positions corresponding to the L conductive column (9); the structure of the L conductive column (9) is the same as that of the M conductive column (8) and passes through the insulating cover plate (7), the K conductive ring (6), and the third insulating spacer ring (33) in sequence, and an insulating tube (82) and a sealing glue layer (83) are also provided on the outer side of the L conductive column (9).

6. The insulating tube sealed insulation enhanced wind power slip ring according to claim 5, characterized in that: The structure of the K conductive ring (6) is the same as that of the M conductive ring (4), and a positioning hole (41) and a positioning stop (42) are provided at positions corresponding to the K conductive column (10); the structure of the K conductive column (10) is the same as that of the M conductive column (8) and passes through the insulating cover plate (7), and an insulating tube (82) and a sealing glue layer (83) are also provided on the outer side of the K conductive column (10).

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