CN108538486B

CN108538486B - Wind energy power cable with good torsion resistance

Info

Publication number: CN108538486B
Application number: CN201810490394.1A
Authority: CN
Inventors: 肖本国; 孙磊; 何立群; 王康; 彭鹏
Original assignee: ANHUI GUODIAN CABLE GROUP CO LTD
Current assignee: ANHUI GUODIAN CABLE GROUP CO LTD
Priority date: 2018-05-21
Filing date: 2018-05-21
Publication date: 2020-04-24
Anticipated expiration: 2038-05-21
Also published as: CN108538486A

Abstract

The invention discloses a wind energy power cable with good torsion resistance, which comprises two power cables and an extrusion sheath arranged outside the power cables, wherein the inner wall of the extrusion sheath is sleeved with a plastic pipe, the power cables are positioned in the plastic pipe and are contacted with the inner wall of the plastic pipe, the side wall of one power cable is provided with a clamping groove, the side wall of the other power cable is provided with a copper rod matched with the clamping groove, one ends of the two extrusion sheaths corresponding to each other are respectively fixedly sleeved with a first annular block and a second annular block, four cavities are symmetrically formed in the first annular block, and a cylinder is rotatably connected in each cavity through a first bearing. The invention has convenient operation, can prevent the internal power cable from twisting together with the extruded sheath, improves the twisting resistance of the power cable, can conveniently and quickly connect two power cables together, and improves the working efficiency.

Description

Wind energy power cable with good torsion resistance

Technical Field

The invention relates to the technical field of wind power, in particular to a wind power cable with good torsion resistance.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater, and has a gradually increasing proportion in the power line. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables.

Through retrieval, a patent with Chinese patent No. CN104051069A discloses a cold-resistant torsion-resistant flame-retardant wind energy power cable, which is formed by twisting a plurality of aramid fiber conductor parts and a plurality of soft copper conductor parts into strands at a certain pitch, then twisting the strands into soft conductors in the same direction according to a certain pitch, wrapping isolation belts outside the soft conductors twisted by the strands in the same direction according to a certain overlapping rate, extruding and wrapping insulation outside the isolation belts, and extruding and wrapping a sheath outside the insulation. The cold-resistant torsion-resistant flame-retardant wind energy power cable in the patent has the following defects: this power cable's resistant performance of turning round is good inadequately, is connecting power cable middle part simultaneously, adopts the pouring type mostly, and the operation is more loaded down with trivial details, has reduced work efficiency.

Disclosure of Invention

The invention aims to solve the problem that in the prior art, when a power cable is connected, the operation is complicated, and provides a wind energy power cable with good torsion resistance.

In order to achieve the purpose, the invention adopts the following technical scheme:

a wind energy power cable with good torsion resistance comprises two power cables and an extrusion sheath arranged outside the power cables, wherein a plastic pipe is sleeved on the inner wall of the extrusion sheath, the power cables are located in the plastic pipe and are in contact with the inner wall of the plastic pipe, a clamping groove is formed in the side wall of one power cable, a copper rod matched with the clamping groove is formed in the side wall of the other power cable, a first annular block and a second annular block are fixedly sleeved at the corresponding ends of the two extrusion sheaths respectively, four cavities are symmetrically formed in the first annular block, cylinders are rotatably connected in the cavities through first bearings, threaded holes corresponding to the cavities are formed in the side walls of the four cavities, close to one side of the second annular block, threaded rods are arranged in the four cylinders, and the threaded rods are in threaded connection with the threaded holes and penetrate through the threaded holes to extend outwards, the side wall of the second annular block is provided with thread grooves matched with four threaded rods, the inner walls of two sides of the cylinder are fixedly connected with sliding blocks, the sliding blocks are arranged close to the opening of the cylinder, the two side walls of the threaded rods are provided with sliding grooves matched with the sliding blocks, the side wall of the first annular block is provided with rotary holes communicated with four cavities, the rotary holes are rotatably connected with gears through rotary shafts, two ends of each gear penetrate through the rotary holes and extend outwards, the side wall of the cylinder is provided with a first tooth groove matched with the gears, a round pipe is arranged outside the first annular block, the inner wall of the round pipe is fixedly sleeved with a second bearing, the inner walls of two sides of the second bearing are fixedly connected with T-shaped blocks, the two side walls of the first annular block are provided with T-shaped grooves matched with the T-shaped blocks, and the inner wall of the round pipe is provided with a second, and the round tube is also provided with a limiting mechanism.

Preferably, stop gear includes the pipe, the both sides inner wall of pipe all sets up flutedly, be equipped with the trapezoidal piece in the recess, the equal fixedly connected with stopper of trapezoidal piece both sides wall, the both sides wall of recess all set up with stopper assorted spacing groove, the stopper passes through spring and spacing groove fixed connection, the lateral wall of first annular piece set up with trapezoidal piece assorted trapezoidal groove.

Preferably, two the lateral wall of the corresponding one side of trapezoidal piece all rotates and is connected with the ball, the lateral wall of first annular piece seted up with ball assorted ring channel, and the ring channel is located the right side setting of trapezoidal groove.

Preferably, the outer wall of pipe is equipped with the rubber gasket, and the outer wall of rubber gasket has seted up anti-skidding line.

Preferably, a plurality of telescopic rods are arranged in the springs, and two ends of each telescopic rod are fixedly connected with the limiting blocks and the limiting grooves respectively.

Preferably, the side walls of the corresponding sides of the first annular block and the second annular block are provided with sealing gaskets.

Compared with the prior art, the invention provides the wind energy power cable with good torsion resistance, which has the following beneficial effects:

1. this wind energy power cable that resistant performance is good, establish the inside at the plasticity pipe through power cable, crowded package sheath is when receiving the torsional force effect, can prevent that inside power cable from twisting together along with crowded package sheath, power cable's resistant performance of twisting has been improved, again through the joint department with two power cable align together, make the copper pole card with to the draw-in groove in, rotatory pipe, rethread pipe inner wall seted up with gear assorted second tooth's socket, the pipe is rotatory to drive the gear rotation, the gear rotation drives the drum rotatory, the slider that rethread drum inner wall was equipped with, the drum is rotatory to drive the threaded rod, rethread threaded rod and screw hole threaded connection, make the threaded rod remove right and rotate, make the threaded rod card with to the thread groove in, can conveniently link together two power cable fast, work efficiency is improved.

2. This wind energy power cable that resistant performance of turning round is good, through the screw rod card with to the thread groove in, the pulling pipe, the pipe removes and drives trapezoidal piece and removes, when trapezoidal piece removes the position to the trapezoidal groove, drives the stopper through the pulling force of spring and removes, stopper removes and drives trapezoidal piece and removes, makes trapezoidal piece firmly block with to the trapezoidal groove in, prevents that the threaded rod from becoming flexible.

The device has the advantages that the operation is convenient, the internal power cables can be prevented from being twisted along with the extruded sheath, the torsion resistance of the power cables is improved, meanwhile, the two power cables can be conveniently and quickly connected together, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic structural diagram of a wind energy power cable with good torsion resistance according to the present invention;

fig. 2 is an enlarged schematic view of a portion a of a wind energy power cable with good torsion resistance according to the present invention.

In the figure: the device comprises a power cable 1, an extrusion sheath 2, a plastic pipe 3, a first annular block 4, a second annular block 5, a first bearing 6, a cylinder 7, a threaded rod 8, a sliding block 9, a gear 10, a circular pipe 11, a T-shaped block 12, a second tooth groove 13, a trapezoidal block 14, a limiting block 15 and a spring 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, a wind energy power cable with good torsion resistance comprises two power cables 1 and an extrusion sheath 2 arranged outside the power cables 1, wherein a plastic pipe 3 is sleeved on the inner wall of the extrusion sheath 2, the power cables 1 are positioned in the plastic pipe 3 and contact with the inner wall of the plastic pipe 3, so that when the extrusion sheath 2 is under the action of torsion, the internal power cables 1 do not move together with the extrusion sheath 2, a clamping groove is formed in the side wall of one of the power cables 1, a copper rod matched with the clamping groove is formed in the side wall of the other power cable 1, so that the two power cables 1 can be connected more stably between pairs, a first annular block 4 and a second annular block 5 are fixedly sleeved at one corresponding ends of the two extrusion sheaths 3 respectively, sealing gaskets are arranged on the side walls of the first annular block 4 and the second annular block 5, and the sealing gaskets are of the prior structure, the sealing performance can be improved, the waterproof performance of the power cable 1 is improved, four cavities are symmetrically formed in the first annular block 3, a cylinder 7 is rotatably connected in each cavity through a first bearing 6, the threaded cylinder 7 is made to rotate, threaded holes corresponding to the cavities are formed in the side walls, close to one side of the second annular block 5, of the four cavities, threaded rods 8 are arranged in the four cylinders 7, the threaded rods 8 are in threaded connection with the threaded holes and extend outwards through the threaded holes, threaded grooves matched with the four threaded rods 8 are formed in the side walls of the second annular block 5, the threaded rods 8 can be in threaded connection with the threaded grooves, sliding blocks 9 are fixedly connected to the inner walls of the two sides of each cylinder 7, the sliding blocks 9 are arranged close to the openings of the cylinders 7, the sliding blocks 9 can drive the threaded rods 8 to rotate, sliding grooves matched with the sliding blocks 9 are formed in the two side walls of the threaded rods 8, the rotary holes are connected with a gear 10 through a rotary shaft in a rotating mode, two ends of the gear 10 penetrate through the rotary holes and extend outwards, a first tooth groove matched with the gear 10 is formed in the side wall of the cylinder 7, the gear 10 can drive the cylinder 7 to rotate, a circular pipe 11 is arranged outside the first annular block 4, a second bearing is fixedly sleeved on the inner wall of the circular pipe 11, T-shaped blocks 12 are fixedly connected to the inner walls of two sides of the second bearing, T-shaped grooves matched with the T-shaped blocks 12 are formed in two side walls of the first annular block 4, the circular pipe 11 can move and rotate, a second tooth groove 13 matched with the gear 10 is formed in the inner wall of the circular pipe 11, the circular pipe 11 can drive the gear to rotate, a rubber gasket is arranged on the outer wall of the circular pipe 11, anti-slip lines are formed in the outer wall of the rubber gasket, the rubber gasket is of the existing structure and can facilitate rotation, the limiting mechanism comprises a circular tube 11, grooves are formed in the inner walls of two sides of the circular tube 11, trapezoidal blocks 14 are arranged in the grooves, limiting blocks 15 are fixedly connected to two side walls of each trapezoidal block 14, limiting grooves matched with the limiting blocks 15 are formed in two side walls of each groove, the limiting blocks 15 are fixedly connected with the limiting grooves through springs 16, telescopic rods are arranged in the springs 16, two ends of each telescopic rod are fixedly connected with the limiting blocks 15 and the limiting grooves respectively, the springs 16 are prevented from deforming in the working process, trapezoidal grooves matched with the trapezoidal blocks 14 are formed in the side walls of the first annular block 4, loosening of the threaded rods 8 can be prevented, rolling balls are rotatably connected to the side walls of one side, corresponding to each of the two trapezoidal blocks 14, annular grooves matched with the rolling balls are formed in the side walls of the first annular block 4, the annular grooves are arranged on the right sides of the trapezoidal grooves, and, facilitating rotation of the barrel 11.

In the invention, when in use, the power cable 1 is arranged inside the plastic tube 3, the extruded sheath 2 can prevent the power cable 1 inside from twisting together with the extruded sheath 2 when being subjected to twisting force, the torsion resistance of the power cable 1 is improved, then the joints of the two power cables 1 are aligned together, the copper rod is clamped into the clamping groove, the circular tube 11 is rotated, the second tooth socket 13 matched with the gear 10 is arranged on the inner wall of the circular tube 11, the circular tube 11 is rotated to drive the gear 10 to rotate, the gear 10 is rotated to drive the cylinder 7 to rotate, the cylinder 7 is rotated to drive the threaded rod 8 to rotate through the slide block 9 arranged on the inner wall of the cylinder 7, the threaded rod 8 is connected with the threaded hole through the threaded rod 8, the threaded rod 8 is moved rightwards and rotated, the threaded rod 8 is clamped into the threaded groove, and the two power cables 1 can be conveniently and quickly connected together, the working efficiency is improved, when the threaded rod 8 is completely clamped in the thread groove, the round pipe 11 is pulled, the round pipe 11 moves to drive the trapezoidal block 14 to move, when the trapezoidal block 14 moves to the position of the trapezoidal groove, the limiting block 15 is driven to move through the pulling force of the spring 16, the limiting block 15 moves to drive the trapezoidal block 14 to move, the trapezoidal block 14 is firmly clamped in the thread groove, and the threaded rod 8 is prevented from loosening.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A wind energy power cable with good torsion resistance comprises two power cables (1) and an extrusion sheath (2) arranged outside the power cables (1), and is characterized in that the inner wall of the extrusion sheath (2) is sleeved with a plastic pipe (3), the power cables (1) are positioned in the plastic pipe (3) and are in contact with the inner wall of the plastic pipe (3), the side wall of one power cable (1) is provided with a clamping groove, the side wall of the other power cable (1) is provided with a copper rod matched with the clamping groove, one ends, corresponding to the two extrusion sheaths (2), are respectively and fixedly sleeved with a first annular block (4) and a second annular block (5), four cavities are symmetrically formed in the first annular block (4), a cylinder (7) is rotatably connected in each cavity through a first bearing (6), and threaded holes corresponding to the positions of the side walls, close to one side of the second annular block (5), of the four cavities are formed in the side walls, threaded rods (8) are arranged in the four cylinders (7), the threaded rods (8) are in threaded connection with threaded holes and penetrate through the threaded holes to extend outwards, threaded grooves matched with the four threaded rods (8) are formed in the side walls of the second annular block (5), sliders (9) are fixedly connected to the inner walls of the two sides of each cylinder (7), the sliders (9) are arranged close to the opening of each cylinder (7), sliding grooves matched with the sliders (9) are formed in the two side walls of each threaded rod (8), rotating holes communicated with the four cavities are formed in the side walls of the first annular block (4), gears (10) are rotatably connected to the rotating holes through rotating shafts, the two ends of the gears (10) penetrate through the rotating holes and extend outwards, first tooth grooves matched with the gears (10) are formed in the side walls of the cylinders (7), circular tubes (11) are arranged outside the first annular block (4), a second bearing is fixedly sleeved on the inner wall of the circular tube (11), the inner walls of two sides of the second bearing are fixedly connected with T-shaped blocks (12), T-shaped grooves matched with the T-shaped blocks (12) are formed in two side walls of the first annular block (4), a second tooth groove (13) matched with the gear (10) is formed in the inner wall of the circular tube (11), and a limiting mechanism is further arranged on the circular tube (11);

the limiting mechanism comprises a circular tube (11), grooves are formed in the inner walls of the two sides of the circular tube (11), trapezoidal blocks (14) are arranged in the grooves, limiting blocks (15) are fixedly connected to the two side walls of the trapezoidal blocks (14), limiting grooves matched with the limiting blocks (15) are formed in the two side walls of the grooves, the limiting blocks (15) are fixedly connected with the limiting grooves through springs (16), and trapezoidal grooves matched with the trapezoidal blocks (14) are formed in the side walls of the first annular blocks (4);

the side walls of the two trapezoidal blocks (14) on the corresponding sides are rotatably connected with balls, annular grooves matched with the balls are formed in the side walls of the first annular block (4), and the annular grooves are formed in the right sides of the trapezoidal grooves;

the outer wall of the round pipe (11) is provided with a rubber gasket, and the outer wall of the rubber gasket is provided with anti-skid lines;

telescopic rods are arranged in the springs (16), and two ends of each telescopic rod are fixedly connected with the limiting block (15) and the limiting groove respectively;

and sealing gaskets are arranged on the side walls of the first annular block (4) and the second annular block (5) on the corresponding sides.