A rotatable free sliding power cable
A power cable and sliding technology, applied in the field of rotatable free sliding power cables, can solve the problems of reducing the service life of cables, excessive aging of insulating materials, creep of copper conductors, etc., to improve tensile strength and prolong service life. , the effect of small bending radius
Active Publication Date: 2021-06-04
SHANGDONG HUALING CABLE
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Problems solved by technology
The increased weight of the cable makes it more difficult to lay
Moreover, due to the heavy weight of the cable, the copper conductor will creep due to the increase of time, making the cable joint easy to loosen, resulting in an increase in contact resistance, and rapid heat generation when the current passes through, resulting in accelerated aging of the insulating material.
[0008] When the cable is laid vertically, due to the weight of the cable, it is easy to cause the extension of the conductor, which will increase the resistance of the conductive core, accelerate the heating of the conductor, and cause excessive aging of the insulating material; reduce the service life of the cable
Method used
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Embodiment 1
[0026] In one or more embodiments, a rotatable free-sliding power cable is disclosed, such as figure 1 As shown, it specifically includes: several insulated wire cores arranged in a ring, and the insulated wire cores include: wire cores and insulating layers extruded outside the wire cores; the center of several insulated wire cores is provided with a bearing sliding device 10, and the bearing sliding device 10 includes: The central layer and the rotating layer arranged outside the central layer and capable of rotating relative to the central layer; a protruding part is arranged outside the rotating layer corresponding to the insulated wire core, and the protruding part is provided with a sliding part capable of bearing the sliding of the insulated wire core Track 4.
[0027] The wire core is composed of inner layer conductor 1, solid lubricating paste 9 layers 2, outer layer conductor 3 and insulation 6, and the wire core as a whole cooperates with the protrusion of the carry...
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The invention discloses a rotatable and free-sliding power cable, which comprises: a plurality of insulated wire cores arranged in a ring, and a bearing sliding device is arranged in the center of the plurality of insulated wire cores, and the bearing sliding device includes: a central layer and a Outside the central layer, a rotating layer that can rotate relative to the central layer; outside the rotating layer, a protruding portion is provided at a position corresponding to the insulated wire core, and the protruding portion is provided with a sliding track capable of carrying the sliding of the insulated wire core . Beneficial effects of the present invention: on one side of the insulating layer, a concave sliding track matched with the load-carrying sliding device is arranged, and three small sliding tracks are arranged in each track, and lubricating paste is coated in the sliding track. This structural design can enable the cable to have a certain slippage in the axial direction of the cable.
Description
technical field [0001] The invention relates to the technical field of power cables, in particular to a rotatable and freely sliding power cable. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the main line of the power system, including 1-500KV and above various voltage levels and various insulated power cables. [0004] The basic structure of a power cable consists of four parts: a core (conducto...
Claims
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IPC IPC(8): H01B9/00H01B7/04H01B7/18H01B7/22H01B7/40
CPCH01B7/04H01B7/1815H01B7/1825H01B7/1895H01B7/223H01B7/40H01B9/006
Inventor 黄延江王兆波潘茂龙蔡延玮刘光伟连瑞琦李媛陈鹏杨鹏
Owner SHANGDONG HUALING CABLE