Fiber composite high voltage power cable
A high-voltage power and optical fiber composite technology, which is applied in the direction of power cables, power cables with shielding layers/conductive layers, cables, etc., can solve the problems of manufacturing, installation, laying and maintenance of temperature measuring optical cables, and save all costs. , Reduce manufacturing costs, reduce the effect of laying and installation costs
Active Publication Date: 2012-03-07
乐星红旗电缆(湖北)有限公司
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Problems solved by technology
[0003] The manufacture, installation, laying and maintenance of temperature measuring optical cables require a lot of cost
Method used
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[0023] Such as figure 1 As shown in , an optical fiber composite high-voltage power cable includes a conductor unit and a sheath unit, a buffer water-blocking layer is provided outside the conductor unit, and an optical fiber unit 6 and two soft wires 5 are arranged inside the buffer water-blocking layer.
[0024] In the optical fiber unit 6, the optical fiber is placed in the stainless steel sleeve, and forms a loose clearance fit. The optical fiber unit and the two soft wires 5 are loosely wound in parallel. The diameter of the soft wire 5 is slightly larger than the outer diameter of the stainless steel sleeve by 0.5-2 mm. The soft wire is an annealed aluminum wire or a paper rope, and the annealed aluminum wire is, for example, an aluminum wire with a tensile strength not greater than 120 MPa.
[0025] The annealed aluminum wires are connected to each other and grounded.
[0026] The buffer water-blocking layer is composed of a semi-conductive buffer water-blocking tape...
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The invention provides a fiber composite high voltage power cable which comprises a conductor unit and a sheath unit. A buffer water blocking layer is provided outside the conductor unit. The buffer water blocking layer is provided with a fiber unit and two soft wires inside. The fiber unit and the two soft wires are parallel with a distance. Compared with a traditional fiber temperature measurement system, the invention provides the fiber composite high voltage power cable of which the fiber unit is directly embedded into a cable structure. The fiber composite high voltage power cable has the following advantages that: 1. manufacture of a temperature measurement optical cable protection layer is saved, a stainless steel sleeve pipe is directly employed, a metal sheath and an oversheath of the cable are taken as a protection layer, and manufacture cost of a temperature measurement optical cable is reduced; 2. all cost of temperature measurement optical cable laying and installation are saved, and cost of a high voltage power transmission system is reduced. A corrugated aluminum sheath employed in the invention has a certain cushioning effect on extraneous impact, and destruction of a fiber structure by the extraneous impact can be substantially reduced.
Description
technical field [0001] The invention relates to a high-voltage power cable, in particular to an optical fiber composite high-voltage power cable in which a temperature-measuring optical fiber is introduced in a manner of sparse winding of an optical fiber unit. Background technique [0002] At present, in high-voltage power transmission lines, optical fiber temperature measurement systems are often used to monitor the temperature of various points of high-voltage cables. The optical fiber temperature measurement system is to lay the temperature measurement optical cable along the cable, and the temperature measurement optical cable can continuously obtain the temperature of each point along the high voltage cable. [0003] The manufacture, installation, laying and maintenance of temperature measuring optical cables require a lot of expense. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an optical fiber composi...
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Inventor 杜青金永镐游靖华魏帼施英陈建军郑文君冷文祥
Owner 乐星红旗电缆(湖北)有限公司