CN202615857U - Environmental protection type double-shielding control cable - Google Patents

Abstract

The utility model discloses an environmental protection type double-shielding control cable which comprises a plurality of insulating wire cores, wherein each insulating wire core is externally wrapped with a copper wire knitting sub-shielding layer and a fireproof layer in sequence; after being twisted, the plurality of insulating wire cores are wrapped with taped coverings; a low-smoke halogen-free polyolefin internal protective sleeve is wrapped outside each taped covering; and a heat insulating layer, a copper belt head shielding layer and an external protective sleeve are sequentially wrapped outside each internal protective sleeve. According to the environmental protection type double-shielding control cable, the design of double-layer head shielding effectively improves the interference resistance of a control cable; the low-smoke halogen-free polyolefin is served as the internal protective sleeve, thereby the dense smoke and the corrosive gas cannot be generated once burning occurred, and high environmental protection performance can be achieved; and meanwhile, the environmental protection type double-shielding control cable has excellent high temperature resistance, excellent oil resistance and excellent corrosion resistance.

Description

An environment-friendly double-shielded control cable

technical field

The utility model relates to a cable, in particular to an environment-friendly double-shielded control cable.

Background technique

Most of the existing control cables are composed of wire core, shielding layer and insulating sheath covering the outer layer of the wire core. The high temperature resistance, oil resistance, corrosion resistance and anti-interference performance of this type of cable are not ideal, and the outer sheath Most of the sleeves are made of halogen-containing insulating materials. When high temperature and fire break out, not only will a large amount of smoke be produced, but also highly corrosive and toxic hydrogen halide gas with "secondary disasters" will be produced, which will endanger the safety of personnel. life, endanger equipment and pollute the atmosphere. Therefore, it is particularly necessary to improve these properties of the cable.

Utility model content

The purpose of this utility model is to provide an environment-friendly double-shielded control cable to solve the problems in the prior art that the control cable has poor high temperature resistance, oil resistance, corrosion resistance and anti-interference performance, and is not environmentally friendly enough to meet the use requirements.

In order to achieve the above object, the technical solution adopted by the utility model is:

An environment-friendly double-shielded control cable, characterized in that it includes several insulated wire cores, each insulated wire core is covered with a copper wire braided sub-shielding layer and a refractory layer in turn, and several insulated wire cores are twisted and then wrapped There is a wrapping layer, and the wrapping layer is covered with a low-smoke halogen-free polyolefin inner sheath, and the inner sheath is covered with a heat insulation layer, a copper tape overall shielding layer and an outer sheath in sequence.

The environmental-friendly double-shielded control cable is characterized in that: the heat insulation layer is an aluminum-plastic composite tape heat insulation layer.

The environmental-friendly double-shielded control cable is characterized in that: the wrapping layer is extruded with silicon rubber.

The beneficial effects of the utility model are:

The utility model adopts a double-layer overall shielding design, which effectively improves the anti-interference ability of the control cable; adopts low-smoke and halogen-free polyolefin as the inner sheath, and will not release dense smoke and corrosive gases when the cable burns, and has good performance. Environmental protection effect, meanwhile, the utility model also has excellent high temperature resistance, oil resistance and corrosion resistance.

Description of drawings

Figure 1 is a schematic structural view of the utility model.

Detailed ways

As shown in Figure 1, the utility model includes several insulated wire cores 1, each insulated wire core 1 is coated with a copper wire braided sub-shielding layer 2 and a refractory layer 3 in turn, and several insulated wire cores 1 are twisted and then wound Wrapped with a wrapping layer 4, the wrapping layer 4 is covered with a low-smoke halogen-free polyolefin inner sheath 5, and the inner sheath 5 is successively covered with a heat insulation layer 6, a copper tape overall shielding layer 7 and an outer sheath 8.

The heat insulation layer 6 is an aluminum-plastic composite tape heat insulation layer. Silicone rubber 9 is extruded in the wrapping layer 4 .

Claims (3)

1. environment-friendly type double shield control cable; It is characterized in that: include several insulated wire cores; Every insulated core is coated with copper wire braiding sub-shield and flame retardant coating outward successively; Be surrounded with lapping layer after several insulated wire cores are stranded, said lapping layer is coated with the low-smoke halogen-free polyolefin inner sheath, and said inner sheath is coated with thermal insulation layer, the total screen of copper strips and oversheath outward successively.

2. a kind of environment-friendly type double shield control cable according to claim 1, it is characterized in that: said thermal insulation layer is the aluminium-plastic tape thermal insulation layer.

3. a kind of environment-friendly type double shield control cable according to claim 1 is characterized in that: be extruded with silicon rubber in the said lapping layer.

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