Tensile photovoltaic cable capable of adapting to severe environment

Abstract

The invention is applicable to the technical field of photovoltaic cables, and provides a tensile photovoltaic cable capable of adapting to a severe environment. A spiral sleeve is arranged at the center, and a plurality of insulating rope groups are annularly arranged on the outer side of the spiral sleeve along the axial direction of the photovoltaic cable; each insulating rope group is formed by mutually crossing and winding two S-shaped ropes, and the whole insulating rope group is a plurality of diamonds which are connected end to end, so that each insulating rope group can be deformed through the diamonds when the two ends are pulled, the two ends are lengthened, the middle is narrowed, and the pulling deformation of the two ends is adapted; meanwhile, the spiral sleeve can also adapt to pulling deformation of the two ends, and a first wire core located between the spiral sleeve and the insulating rope set, a second wire core located in the middle of the insulating rope set and a third wire core spirally arranged between the insulating rope set and the flame-retardant layer can relieve the pulling situation through spiral arrangement; therefore, the adaptation of the tensile state is completed, and the internal wire core is ensured not to be broken.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic cables, in particular to a tensile photovoltaic cable capable of adapting to harsh environments. Background technique [0002] Photovoltaic cable, that is, photovoltaic special cable, the conductor part is copper conductor or tinned copper conductor, the insulation layer is irradiated cross-linked polyolefin insulation, and the sheath is irradiated cross-linked polyolefin insulation. A large number of DC cables in photovoltaic power plants need to be laid outdoors, and the environmental conditions are harsh. The cable materials should be determined according to the resistance to ultraviolet rays, ozone, severe temperature changes and chemical erosion. In some special environments, chemical substances such as acid and alkali are also required. [0003] Existing photovoltaic cables can relieve part of the pulling force through the deformation of the sheath and the inner insulating layer. The i...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a tensile photovoltaic cable that can adapt to harsh environments, aiming to solve the problem that the existing photovoltaic cable tensile force is partially relieved by the deformation of the sheath and the inner insulating layer, and the inner cable core, that is, the conductor, cannot It is pulled and becomes longer, which will cause the whole to be unable to withstand large pulling deformation, which will easily lead to breakage and affect the use of the entire photovoltaic cable.

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