CN201477926U - Fireproof high temperature resistant anti-interference shielded control cable - Google Patents

Abstract

The utility model discloses a fire-resistant, high-temperature, anti-interference, and shielded control cable, which comprises a cable core and an outer sheath covering the outside of the cable core. The cable core is composed of a plurality of twisted wire cores. From the inside to the outside, there are conductors, insulating layers, mica tape wrapping layers, and alkali-free glass fiber braiding layers. Double-layer overlapping wrapping and the outer surface of the insulating layer, the braided layer of non-alkali glass fiber is formed by weaving a single non-alkali glass fiber; the utility model has excellent acid and alkali resistance, non-flammability, and weather resistance, which is unique The unique structural layered design and material selection make this cable have the characteristics of fire resistance, non-flammability, and good anti-interference shielding performance.

Description

Fireproof high temperature resistant anti-interference shielded control cable

technical field

The utility model relates to the field of control cables, in particular to a fireproof, high temperature, anti-interference and shielding control cable.

Background technique

Control cables are suitable for signal transmission, control and measurement systems of electrical instruments and power distribution devices with AC rated voltage (U0/U) 450/750V and below in industries such as electric power, metallurgy, petroleum, chemical industry, textiles, etc., as well as national defense, scientific research and other industries .

In the existing installation of this type of system, it is first required that the cable itself cannot produce interference signal effects, and the cable is required to be temperature-resistant, fire-resistant, and flame-retardant. The existing cable structure cannot fully meet the requirements of temperature resistance, fire resistance, and flame retardancy. , the current control cable uses a temperature resistance level of about 500 ° C, but there are many existing cable structures, the most common structure is formed by twisting a number of cables formed by wrapping the conductor with a plastic insulating layer. Some cables are poor in temperature resistance, fire resistance and flame retardancy, and some cables are covered with ordinary plastic insulation layers, and their heat resistance and fire resistance performance still cannot meet the requirements of the current system. A new type of control cable structure can effectively solve the existing system's demand for control cables.

Utility model content

To solve the above problems, the utility model provides a fire-proof, high-temperature, anti-interference and shielding control cable, which can meet the requirements of temperature resistance, fire prevention and flame retardancy.

The technical scheme of the utility model is as follows:

The fireproof, high temperature, anti-interference and shielded control cable includes a cable core and an outer sheath covering the outside of the cable core. The cable core is composed of multiple twisted cores. Conductor, insulating layer, mica tape wrapping layer, alkali-free glass fiber braiding layer, the conductor is bundled soft copper wire, the insulating layer is a fluoroplastic insulating layer, and the mica tape wrapping layer is double-layered mica tape wrapping With the outer surface of the insulating layer, the braided layer of non-alkali glass fiber is formed by braiding a single non-alkali glass fiber, and the weaving density is more than 95%.

The covering ratio of the mica tape around the cladding is greater than 20%.

The outer sheath covering the outside of the cable core is, from the inside to the outside, successively a cable core wrapping layer, a copper wire braided shielding layer, and an alkali-free glass fiber braided outer sheath.

The covering rate of the core tape layer is greater than 15%.

The braiding density of the braided copper wire shielding layer is greater than or equal to 80%, which can increase the anti-interference shielding performance of the control cable.

The density of the alkali-free glass fiber braided outer sheath is greater than or equal to 95%, which has the characteristics of fire prevention, non-flammability, and high temperature resistance. temperature effect.

The beneficial effects of the utility model are as follows:

The utility model has excellent acid and alkali resistance, non-flammable and weather-resistant performance, unique structural layered design and material selection, so that the cable has fire-resistant, non-flammable characteristics, and has good anti-flammability interference shielding performance.

Description of drawings

Fig. 1 is the structural representation of the utility model

Fig. 2 is the structural representation of the utility model internal wire core

The reference signs are: 1 annealed copper wire, 2 imported fluoroplastic insulation layer, 3 mica tape double-layer overlapping wrapping layer, 4 alkali-free glass fiber braiding layer, 5 cable core tape layer, 6 copper wire braided shielding layer, 7 E-glass fiber braided outer sheath.

Detailed ways

As shown in Figure 1-2, the fireproof, high temperature, anti-interference and shielded control cable has a cross-sectional area of 1.5 square millimeters, including a cable core and an outer sheath covering the outside of the cable core. The cable core is composed of multiple twisted cores. The wire core is a conductor, an insulating layer, a mica tape wrapping layer, and an alkali-free glass fiber braiding layer from the inside to the outside. The cladding is made of double-layered mica tape and the outer surface of the insulating layer. The braided layer of E-glass fiber is formed by weaving a single E-glass fiber. The weaving density is above 95%. The braided layer of E-glass fiber can make the cable have Fireproof, non-flammable properties.

The covering ratio of the mica tape around the cladding is greater than 20%.

The outer sheath coated on the outside of the cable core includes a cable core wrapping layer, a copper wire braided shielding layer, and an alkali-free glass fiber braided outer sheath, which are coated sequentially from the inside to the outside.

The covering rate of the core tape layer is greater than 15%.

The braiding density of the braided copper wire shielding layer is greater than or equal to 80%, which can increase the anti-interference shielding performance of the control cable.

The density of the alkali-free glass fiber braided outer sheath is greater than or equal to 95%, which has the characteristics of fire prevention, non-flammability, and high temperature resistance. temperature effect.

The cross-sectional area of the control cable is 1.5 square millimeters, the core conductor is GB/T3956 standard bundled soft copper wire, and the extruded thickness of the imported fluoroplastic insulating layer is 0.35 millimeters.

The number of wire cores of the utility model can be changed with actual conditions.

Claims (7)

1. the anti-interference shielding control cable of fire-proof high-temperature resistant, comprise cable core and the outer jacket that is coated on the cable core outside, cable core is made of many stranded cores, it is characterized in that: described core is followed successively by conductor (1) from the inside to the outside, insulating barrier (2), mica tape lapping layer (3), alkali-free glass wool fibrage layer (4), described conductor (1) is bundle strand annealed copper wire, insulating barrier (2) is the fluoroplastic insulation layer, mica tape lapping layer (3) is wrapped and insulating barrier (2) outer face surface by the mica tape double-layer overlapping, and alkali-free glass wool fibrage layer (4) is that single alkali-free glass wool fibrage forms.

2. the anti-interference shielding control cable of fire-proof high-temperature resistant according to claim 1 is characterized in that: described mica tape lapping layer (3) is all put up rate greater than 20%.

3. the anti-interference shielding control cable of fire-proof high-temperature resistant according to claim 1 is characterized in that: described alkali-free glass wool fibrage layer (4) forms for single alkali-free glass wool fibrage, and count is more than 95%.

4. the anti-interference shielding control cable of fire-proof high-temperature resistant according to claim 1 is characterized in that: the described outer jacket that is coated on the cable core outside is followed successively by cable core belting layer (5), copper wire woven shield (6), alkali-free glass wool fibrage outer jacket (7) from the inside to the outside.

5. the anti-interference shielding control cable of fire-proof high-temperature resistant according to claim 4 is characterized in that: the rate of putting up of described core belting layer (5) is greater than 15%.

6. the anti-interference shielding control cable of fire-proof high-temperature resistant according to claim 4 is characterized in that: the count of described copper wire woven shield (6) is more than or equal to 80%.

7. the anti-interference shielding control cable of fire-proof high-temperature resistant according to claim 4 is characterized in that: described alkali-free glass wool fibrage outer jacket (7) cures formation by immersing ptfe emulsion, and density is more than or equal to 95%.

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