CN202650603U - Fireproof insulated shielded cable - Google Patents

Abstract

The utility model discloses a fireproof insulating shielding cable, which relates to a cable, which comprises a cable core and a protective sheath wrapped outside the cable core, a filling layer is arranged between the protective sheath and the cable core, and the cable core is composed of two insulating The wire core is stranded. The insulated wire core is composed of a conductor and an insulating layer wrapped outside the conductor. The insulating layer is a three-layer composite structure, which is sequentially from the inside to the outside: an organic insulation layer, an inorganic insulation layer and an insulation layer. The shielding layer, the protective sheath is a three-layer composite structure, which from the inside to the outside is: an inner lining layer, a wire shielding layer and an outer sheath layer; the organic insulating layer is made of polyethersulfone extruded material, The outer sheath layer is a corrugated stainless steel pipe. The utility model not only has the advantages of high temperature resistance, acid and alkali corrosion resistance, good flame retardancy, strong anti-interference ability, and is very practical.

Description

Fireproof insulated shielded cable

technical field

The utility model relates to a cable, in particular to a fireproof insulating and shielding cable.

Background technique

In recent years, with the rapid development of air transportation, new and expanded airports have been continuously built, and the maintenance of aviation safety facilities has also greatly increased. Visual aids for landing play a very important role. These lighting wiring uses rubber molded transformers and in-line lighting methods, and the connection wiring of rubber molded transformers usually uses special ethylene-propylene insulated neoprene sheathed high-voltage cables. This kind of cable has poor flame retardancy, radiation resistance and anti-interference performance, which affects the quality of signal transmission. Accidents in some airports were caused by cables with poor flame retardancy and poor radiation resistance and anti-interference performance.

Contents of the invention

Aiming at the problems existing in the above-mentioned prior art, the utility model provides a fireproof insulating shielding cable, which is resistant to high temperature, acid and alkali corrosion, good flame retardancy, strong anti-interference ability, and very practical.

The technical scheme of the utility model is: a fireproof insulating shielded cable, including a cable core and a protective sheath wrapped outside the cable core, a filling layer is arranged between the protective sheath and the cable core, and the cable core is composed of two insulated wire cores The insulated wire core is composed of a conductor and an insulating layer wrapped outside the conductor. The insulating layer is a three-layer composite structure, which is sequentially from the inside to the outside: an organic insulation layer, an inorganic insulation layer and an insulation shielding layer. , the protective sheath is a three-layer composite structure, which is sequentially from the inside to the outside: an inner lining layer, a wire shielding layer and an outer sheath layer; the organic insulating layer is made of polyethersulfone extruded material, and the The outer sheath layer is corrugated stainless steel pipe.

Preferably, the filling layer is an alkali-free glass fiber filling sheet.

Preferably, the inorganic insulating layer is made of alkali-free glass fiber wrapping tape, and the insulating shielding layer is semi-conductive ethylene-propylene rubber.

Preferably, the inner lining layer is a flame-retardant glass fiber cloth layer.

Preferably, the wire shielding layer is a wire braided layer of mesh structure.

The beneficial effects of the utility model are: the utility model has a simple structure design, is scientific and reasonable, and is easy to manufacture. The insulating layer outside the conductor adopts a three-layer composite structure, which has better fireproof performance. There is no flammable medium in the insulating layer, and the insulating performance is excellent. . The protective cover adopts a three-layer composite structure, which has better fire insulation performance. The use of metal wire shielding layer increases the anti-interference performance of the cable. The outer sheath layer is a corrugated stainless steel pipe, which improves the anti-collision, anti-impact and tensile properties of the utility model, and further improves the strength and fireproof performance of the utility model. The organic insulating layer is made of polyethersulfone material, which is non-toxic, self-extinguishing, and has excellent flame retardancy without adding any flame retardant, which can reach UL94V-0 level (0.46mm). And it is resistant to hydrolysis, can withstand hot water or steam at 150-160 ° C, and is not corroded by acids and alkalis at high temperatures. The aviation cable can be widely used in the construction of airport facilities to improve the safety of airports, especially when aircraft take off and land, and has good promotion and application value and broad market prospects.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

Detailed ways

As an embodiment of the present utility model, as shown in Figure 1, a fireproof insulated and shielded cable includes a cable core and a protective sheath wrapped outside the cable core, and a filling layer 5 is arranged between the protective sheath and the cable core. In the embodiment, preferably, the filling layer 5 is an alkali-free glass fiber filling sheet. The cable core is formed by twisting two insulated wire cores. The insulated wire core is composed of a conductor 1 and an insulating layer wrapped outside the conductor 1. The insulating layer is a three-layer composite structure, which is sequentially from the inside to the outside. : organic insulating layer 2, inorganic insulating layer 3 and insulating shielding layer 4, in the present embodiment, as preferably, described inorganic insulating layer 3 is wrapped by non-alkali glass fiber wrapping tape and forms, and insulating shielding layer 4 is semi-conductive ethyl Propylene rubber. The protective sheath is a three-layer composite structure, which is sequentially from the inside to the outside: an inner lining layer 6, a wire shielding layer 7 and an outer sheath layer 8; in this embodiment, as a preference, the inner lining layer 6 It is a flame retardant fiberglass cloth layer. The wire shielding layer 7 is a wire braided layer of mesh structure. The wire shielding layer 7 is made of copper wire or tinned copper wire. The wire shielding layer 7 can not only enhance the strength of the protective cover, but also improve the softness of the utility model, which is convenient for installation. The organic insulating layer 2 is made of polyethersulfone extruded material, and the outer sheath layer 8 is a corrugated stainless steel tube.

The fireproof insulated and shielded cable provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the utility model. The description of the above embodiments is only used to help understand the utility model. method and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation and scope of application. In summary, the contents of this specification should not be understood To limit the utility model. Variations and improvements to the invention will be possible without departing from the spirit and scope of the appended claims.

Claims (5)

1. A fireproof insulated shielded cable, comprising a cable core and a protective sheath wrapped around the cable core, a filling layer is arranged between the protective sheath and the cable core, and it is characterized in that: the cable core is stranded by two insulated wire cores The insulated wire core is composed of a conductor and an insulating layer wrapped outside the conductor. The insulating layer is a three-layer composite structure, which is sequentially composed of an organic insulating layer, an inorganic insulating layer and an insulating shielding layer from the inside to the outside. The above-mentioned protective sheath is a three-layer composite structure, which from the inside to the outside is: an inner lining layer, a wire shielding layer and an outer sheath layer; the organic insulating layer is made of polyethersulfone extruded material, and the outer sheath The casing is corrugated stainless steel pipe. 2. The fireproof insulated and shielded cable according to claim 1, characterized in that: the filling layer is an alkali-free glass fiber filling sheet. 3. The fireproof insulated and shielded cable according to claim 2, characterized in that: the inorganic insulating layer is made of alkali-free glass fiber wrapping tape, and the insulating and shielding layer is semi-conductive ethylene-propylene rubber. 4. The fire-proof insulated and shielded cable according to claim 3, characterized in that: the inner lining layer is a flame-retardant glass fiber cloth layer. 5. The fireproof insulated and shielded cable according to claim 4, characterized in that: the wire shielding layer is a wire braided layer with a mesh structure.

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