New energy vehicle low smoke halogen-free cross-linked polyolefin sheathed charging pile wire and cable material granulator

The utility model discloses a low-smoke, halogen-free, flame-retardant electric road vehicle charging station and charging pile cable, which includes a twisted three-phase wire core, a ground wire core, a control switch wire core, a neutral wire core and a control connection. The switch confirmation wire core, the three-phase wire core, the ground wire core, the control switch wire core, the neutral wire core and the control connection switch confirmation wire core respectively include tinned copper conductors, with filling layers between them, and tinned copper conductors outside. It is sequentially covered with an isolation layer and an insulation layer extruded from low-smoke halogen-free flame-retardant insulation material. The three-phase wire core, the ground wire core, the control switch wire core, the neutral wire core and the control connection switch confirmation wire core. It is covered with tape, inner sheath, shielding layer and outer sheath braided by tinned copper wire. The utility model has low-smoke, halogen-free and soft characteristics, can be installed and laid in densely populated places, can be used in conjunction with standard connectors and charging equipment for mobile use, and can meet the needs of charging pile power cables.


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. During the extrusion process, due to the particularity of low-smoke halogen-free cable materials, the molten material generates a large amount of heat due to friction, which requires the extrusion equipment to have a good cooling device , in order to control the process temperature. This is a problem that cannot be ignored. If the temperature is too high, large pores will appear on the surface of the cable. If the temperature is too low, the overall current of the device will increase, which can easily damage the device. I once saw a Shanghai customer change the air cooling of the extruder cooling system to a water cooling system. After the change, the temperature rise was a bit slow, but the temperature rise was steady, the cooling speed was fast, and the system temperature was stable.
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The energy charging pile low-smoke halogen-free cable material granulator shrinks more sharply during extrusion, causing the outer layer of the sheath to have cooled and finalized, while the inner layer of cable material is still at a high temperature and has not yet been determined. type state, thereby burying the hidden danger of stress concentration, and even eventually leading to stress cracking of the outer sheath of the cable. In order to reduce stress concentration caused by the production process, it is recommended to use segmented cooling during the sheath extrusion process. Such as hot water cooling
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