Anti-wear protective sleeve for cable in wind driven generator tower

Abstract

The utility model provides an anti-wear protective sleeve for a cable in a wind driven generator tower, which relates to the field of cable anti-wear and comprises a limiting outer sheath, a limiting inner ring block and a wind driven generator cable, and the inner side of the limiting outer sheath is slidably connected with the wind driven generator cable through the limiting inner ring block. The inner side face of the limiting outer sheath is attached to the outer arc face of the limiting inner ring block through an arc-shaped sliding groove, the groove face of the arc-shaped sliding groove is filled with a solid oil block, a sealing oil cover is pressed on the outer surface of the limiting outer sheath, the inner side face of the sealing oil cover is connected with an arc-shaped pressing plate through a supporting spring, and the solid oil block is tightly attached to the side face of the arc-shaped pressing plate. According to the utility model, the problem that the anti-wear service life is short due to the fact that the convex rotating beads of the protective sleeve are easy to damage after being impacted and collided in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable anti - abrasion, in particular to an anti - abrasion protection sleeve for cables inside a wind turbine tower. Background Art

[0002] The cable of a wind turbine is an electrical transmission line used to connect the tower of the wind turbine and the top of the tower, transmitting the electric energy generated by the generator to a ground substation or for direct power supply. After retrieval, in the prior art (publication number: CN202122250668.X), a mobile cable protection sleeve is disclosed. It is recorded in the text that "through the setting of the sliding component, with the cooperation of the sliding groove on the rotating bead and the sliding block, when the staff drags the cable, the rotating bead can rotate along the direction of the sliding groove, facilitating the smoother movement of the cable. At the same time, when the staff drags the cable horizontally, the rotating bead can rotate along the direction of the limiting groove, reducing the resistance when the cable slides". However, there is a problem in the prior art that the protruding rotating beads on the protection sleeve are easily damaged after being impacted and collided, resulting in a short anti - abrasion life. Content of the Utility Model

[0003] To overcome the defects existing in the prior art, the present utility model provides an anti - abrasion protection sleeve for cables inside a wind turbine tower to solve the problem in the prior art that the protruding rotating beads on the protection sleeve are easily damaged after being impacted and collided, resulting in a short anti - abrasion life.

[0004] To achieve the above object, an anti - abrasion protection sleeve for cables inside a wind turbine tower is provided, including: a limiting outer sheath, a limiting inner ring block, and a wind turbine cable. The wind turbine cable is slidably connected inside the limiting outer sheath through the limiting inner ring block.

[0005] The inner surface of the limiting outer sheath is fitted with the outer arc surface of the limiting inner ring block through an arc - shaped sliding groove. The arc - shaped sliding groove is filled with solid oil blocks. A sealing oil cover is pressed on the outer surface of the limiting outer sheath. The inner surface of the sealing oil cover is connected to an arc - shaped pressing plate through a support spring, and the side of the arc - shaped pressing plate is closely attached to the solid oil block.

[0006] Further, a rubber sleeve is fixed on the inner surface of the limiting inner ring block, and the limiting inner ring block is symmetrically bonded to the outer surface of the wind turbine cable through the rubber sleeve.

[0007] Further, steel balls are embedded at the upper and lower half - ring surfaces of the limiting inner ring block, and annular sliding grooves are opened at the upper and lower end faces of the limiting outer sheath; and the steel balls are slidably connected in the annular sliding grooves.

[0008] Further, the side end of the limiting outer sheath is screwed through a fastening bolt; and is symmetrically clamped and fixed on the outer arc surface of the limiting inner ring block.

[0009] Furthermore, the outer arc surface of the limiting outer sheath is bonded with buffer convex strips; and the buffer convex strips are distributed at both side ends of the sealing oil cover.

[0010] Furthermore, fixing studs are welded on the outer surface of the limiting outer sheath, and the upper and lower ends of the sealing oil cover are connected to the fixing studs on the outer surface of the limiting outer sheath through nuts.

[0011] Furthermore, the position-limiting outer sheath, the sealing oil cover, the supporting spring, the arc-shaped pressing plate and the solid oil block constitute an external protective structure of the wind turbine cable.

[0012] The beneficial effect of the utility model lies in that the anti-wear protective sleeve for cables inside the wind turbine tower of the utility model is bonded to the outer surface of the wind turbine cable by a limiting inner ring block, and is fixed to the outer arc surface of the limiting inner ring block by wrapping with a limiting outer sheath. When the wind turbine cable drives the limiting inner ring block to twist, the solid oil blocks in the limiting outer sheath groove come into contact with each other, so that the limiting inner ring block stained with lubricating oil rotates and is located in the limiting outer sheath, which is convenient for lubricating the moving friction surface between the protective sleeve and the wind turbine cable, effectively reducing the wear caused by the twisting of the wind turbine cable, and conveniently buffering the external impact force on the wind turbine cable. The service life of the cable anti-wear protective sleeve is extended by regularly replenishing the solid oil blocks, and the durability of the cable anti-wear protective sleeve is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a front view cross-sectional structural schematic diagram of an anti-wear protective cover for cables in a wind turbine tower according to an embodiment of the present invention.

[0014] Figure 2 The present invention is a schematic diagram of a partial cross-sectional structure of a front view of an anti-wear protective cover for cables in a wind turbine tower according to an embodiment of the present invention.

[0015] Figure 3 The figure is a schematic diagram of a top cross-sectional structure of a position-limiting outer sheath according to an embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the limiting inner ring block in a bottom view according to an embodiment of the utility model.

[0017] In the figure: 1. limit outer sheath; 11. annular slide groove; 12. fixing stud; 13. buffer convex strip; 14. fastening bolt; 15. arc slide groove; 2. limit inner ring block; 21. rubber sleeve; 22. steel ball; 3. wind turbine generator cable; 4. sealing oil cover; 41. support spring; 42. arc pressure plate; 5. solid oil block. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown in the figure, the utility model provides a cable anti-wear protection sleeve inside a wind turbine tower, which includes: a limiting outer sheath 1, a limiting inner ring block 2, and a wind turbine cable 3. The wind turbine cable 3 is slidably connected inside the limiting outer sheath 1 through the limiting inner ring block 2.

[0019] The inner surface of the limiting outer sheath 1 is fitted with the outer arc surface of the limiting inner ring block 2 through an arc-shaped sliding groove 15. The groove surface of the arc-shaped sliding groove 15 is filled with a solid oil block 5. A sealing oil cover 4 is press-fitted on the outer surface of the limiting outer sheath 1. The inner surface of the sealing oil cover 4 is connected with an arc-shaped pressing plate 42 through a support spring 41. The side surface of the arc-shaped pressing plate 42 is closely attached to the solid oil block 5.

[0020] First, the limiting inner ring block 2 is bonded to the outer surface of the wind turbine cable 3. Then, the limiting outer sheath 1 is wrapped and fixed at the outer arc surface of the limiting inner ring block 2, and the solid oil block 5 is filled into the oil groove of the limiting outer sheath 1. At the same time, the sealing oil cover 4 is hermetically fixed to the limiting outer sheath 1. When the wind turbine cable 3 drives the limiting inner ring block 2 to twist, the solid oil blocks 5 in the groove of the limiting outer sheath 1 come into contact, enabling the limiting inner ring block 2 stained with lubricating oil to rotate inside the limiting outer sheath 1, facilitating the lubrication of the moving friction surface between the protection sleeve and the wind turbine cable, effectively reducing the wear caused by the twisting of the wind turbine cable, and at the same time conveniently buffering the external impact force received by the wind turbine cable. By regularly replenishing the solid oil block, the service life of the cable anti-wear protection sleeve is extended, and the durability of the cable anti-wear protection sleeve is improved.

[0021] In this embodiment, a rubber sleeve 21 is fixed on the inner surface of the limiting inner ring block 2. The limiting inner ring block 2 is symmetrically bonded to the outer surface of the wind turbine cable 3 through the rubber sleeve 21. Steel balls 22 are embedded and installed at the upper and lower half-ring surfaces of the limiting inner ring block 2. Annular sliding grooves 11 are opened at the upper and lower end faces of the limiting outer sheath 1; and the steel balls 22 are slidably connected inside the annular sliding grooves 11.

[0022] As a preferred implementation method, the limiting inner ring block 2 is fixed to the wind turbine cable 3 and thus rotates in the groove of the limiting outer sheath 1 according to the twist of the wind turbine cable 3. The steel balls 22 facilitate the sliding of the upper and lower end ring surfaces of the limiting inner ring block 2 on the outer surface of the limiting outer sheath 1, and the sizes and installation positions of the limiting outer sheath 1 and the limiting inner ring block 2 can be adjusted accordingly according to the size of the wind turbine cable 3 and the worn position.

[0023] In this embodiment, the side end of the limiting outer sheath 1 is screwed through a fastening bolt 14; and is symmetrically clamped and fixed at the outer arc surface of the limiting inner ring block 2. Buffer convex strips 13 are bonded to the outer arc surface of the limiting outer sheath 1; and the buffer convex strips 13 are distributed at both side ends of the sealing oil cover 4. Fixed studs 12 are welded on the outer surface of the limiting outer sheath 1. The upper and lower ends of the sealing oil cover 4 are connected to the fixed studs 12 on the outer surface of the limiting inner ring block 2 through nuts.

[0024] As a preferred embodiment, the limiting outer sheath 1 is clamped between the upper and lower ring plates of the limiting outer sheath 1. When the wind turbine cable 3 drives the bonded limiting inner ring block 2 to move within the limiting outer sheath 1, the limiting inner ring block 2 comes into contact with the solid oil block 5, enabling the limiting inner ring block 2 with the solid oil block 5 adhered to it to further reduce friction when sliding.

[0025] In this embodiment, the limiting outer sheath 1, the sealing oil cap 4, the support spring 41, the arc-shaped pressing plate 42, and the solid oil block 5 constitute the external protection structure of the wind turbine cable 3.

[0026] As a preferred embodiment, the external protection structure of the wind turbine cable 3 facilitates lubricating the moving friction surface between the protective sleeve and the wind turbine cable, effectively reducing the wear caused by the torsion of the wind turbine cable. At the same time, it conveniently buffers the external impact force on the wind turbine cable and extends the service life of the cable anti-wear protective sleeve.

[0027] The cable anti-wear protective sleeve for the wind turbine tower of the present utility model can effectively solve the problem in the prior art that the rotating beads protruding outside the protective sleeve are easily damaged after being impacted and collided, resulting in a short anti-wear life. It facilitates lubricating the moving friction surface between the protective sleeve and the wind turbine cable, effectively reducing the wear caused by the torsion of the wind turbine cable. At the same time, it conveniently buffers the external impact force on the wind turbine cable. By regularly replenishing the solid oil block, it extends the service life of the cable anti-wear protective sleeve, improves the durability of the cable anti-wear protective sleeve, and is applicable to the cable anti-wear protective sleeve in the wind turbine tower.

Claims

1. A cable anti-wear protection sleeve inside a wind turbine tower, comprising: A limiting outer sheath (1), a limiting inner ring block (2) and a wind turbine cable (3). The wind turbine cable (3) is slidably connected to the inner side of the limiting outer sheath (1) through the limiting inner ring block (2). It is characterized in that: The inner side surface of the limiting outer sheath (1) is in fit with the outer arc surface of the limiting inner ring block (2) through an arc-shaped sliding groove (15). The groove surface of the arc-shaped sliding groove (15) is filled with a solid oil block (5). A sealing oil cover (4) is press-fitted on the outer surface of the limiting outer sheath (1). An arc-shaped pressing plate (42) is connected to the inner side surface of the sealing oil cover (4) through a support spring (41). The side surface of the arc-shaped pressing plate (42) is in close contact with the solid oil block (5).

2. The anti-wear protection sleeve for cables inside a wind turbine tower according to claim 1, characterized in that, A rubber sleeve (21) is fixed to the inner side surface of the limiting inner ring block (2). The limiting inner ring block (2) is symmetrically bonded to the outer surface of the wind turbine cable (3) through the rubber sleeve (21).

3. A cable anti-wear protection sleeve inside a wind turbine tower according to claim 1, characterized in that, Steel balls (22) are embedded and installed at the upper and lower half-ring surfaces of the limiting inner ring block (2). Annular sliding grooves (11) are formed at the upper and lower end surfaces of the limiting outer sheath (1); and the steel balls (22) are slidably connected in the annular sliding grooves (11).

4. A cable anti-wear protection sleeve inside a wind turbine tower according to claim 1, characterized in that, The side end of the limiting outer sheath (1) is screwed through a fastening bolt (14); and is symmetrically clamped and fixed at the outer arc surface of the limiting inner ring block (2).

5. A cable anti-wear protection sleeve inside a wind turbine tower according to claim 1, characterized in that, Buffer protrusions (13) are bonded to the outer arc surface of the limiting outer sheath (1); and the buffer protrusions (13) are distributed at both side ends of the sealing oil cover (4).

6. The anti-wear protection sleeve for cables inside a wind turbine tower according to claim 1, characterized in that, Fixed studs (12) are welded to the outer surface of the limiting outer sheath (1). The upper and lower ends of the sealing oil cover (4) are connected to the fixed studs (12) on the outer surface of the limiting outer sheath (1) through nuts.

7. A cable anti-wear protection sleeve inside a wind turbine tower according to claim 1, characterized in that, The limiting outer sheath (1), the sealing oil cover (4), the support spring (41), the arc-shaped pressing plate (42) and the solid oil block (5) constitute an external protection structure for the wind turbine cable (3).

Images