Hydrocarbon substance aging resisting instrument cable for petrochemical plant and manufacturing method thereof

Abstract

The invention relates to a hydrocarbon substance aging resisting instrument cable for a petrochemical plant and a manufacturing method thereof. Insulation layers are arranged on the periphery of conductors in an extruded mode to form insulation wire cores, every two insulation wire cores are twisted to form one twisted wire pair, multiple sets of twisted wire pairs are twisted and form a cable core, an anti-flaming fireproof longitudinal wrapping strap, an aluminum foil composite shielding strap, a hydrocarbon substance aging resisting lining layer, a nylon internal protecting sleeve and a hydrocarbon substance aging resisting outer protecting sleeve wrap the periphery of the cable core in sequence, the aluminum foil face of the aluminum foil composite shielding strap faces inwards, and a copper wire drainage thread is arranged on the inner side of the aluminum foil composite shielding strap. The inner lining layer and the outer protecting sleeve comprise the components, by weight, 15 parts of PVC-SG2, 5 parts of NBR3305, 3-7 parts of adipic acid propylene glycol polymers, 2-3 parts of epoxidized soybean oil, 0.6-1 part of barium stearate, 1-1.5 parts of lead sulfate tribasic, 0.05-0.1 part of phenol propane, 3-5 parts of antimonous oxide, 0.1-0.5 part of chlorinated paraffin-52 and 0.3-0.5 part of ferrocene. The cable is capable of resisting hydrocarbon substance aging, small in outer diameter and low in weight.

Description

technical field [0001] The invention relates to an instrument cable, in particular to a hydrocarbon aging-resistant instrument cable for a petrochemical device. The invention also relates to a method for manufacturing a hydrocarbon aging-resistant instrument cable for a petrochemical device. Background technique [0002] The petrochemical plant area contains a large amount of hydrocarbons such as oil, chemical solvents, flammable gases, etc. In order to ensure the safety of electrical work on site, it is necessary to use cables that can withstand the corrosion and aging of hydrocarbons for a long time and operate safely. The prior art uses airtight lead-clad sheathed cables, which have good corrosion resistance and can effectively isolate hydrocarbons. However, this type of cable has great disadvantages, such as heavy weight, large outer diameter, not easy to bend, limited use occasions, complicated cable terminal processing, and a waste of time. At the same time, the lead ...

AI Technical Summary

Problems solved by technology

However, this type of cable has great disadvantages, such as heavy weight, large outer diameter, not easy to bend, limited use occasions, complicated cable terminal processing, and a waste of time. At the same time, the lead sheath contains a large amount of lead metal, which is toxic and harmful to the environment and human body. Great health hazard

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