CN212624925U - High structural strength flame retarded cable - Google Patents

Abstract

The application relates to a high structural strength flame retarded cable, including outer ring circle, inner ring circle and connecting plate, connect through a plurality of connecting plates between outer ring circle and the inner ring circle, form the cable cavity between outer ring circle, inner ring circle and the adjacent connecting plate, install the sinle silk in the cable cavity, the cable cavity intussuseption is filled with and is used for carrying out the filler fixed with the sinle silk, the outside of outer ring circle is equipped with insulating layer, steel band armor, fire-resistant flame retardant layer and oversheath in proper order. This application is through setting up outer ring circle, inner ring circle and connecting plate, and outer ring circle and inner ring circle play the supporting role, have the guard action to the core, link together outer ring circle and inner ring circle through the connecting plate, have stronger structural strength, are applicable to comparatively badly service environment, have improved the life of cable.

Description

High structural strength flame retarded cable

Technical Field

The application relates to the technical field of electric wires and cables, in particular to a high-structural-strength flame-retardant cable.

Background

A cable is a power or signal transmission device, and is generally composed of several wires or groups of wires. With the rapid development of the power industry and urban construction, the requirements of various industries on cables are higher and higher.

For example, a cross-linked polyethylene insulated multi-core flame-retardant cable is disclosed in the chinese utility model with the application number CN201620470451.6, which comprises a cable core, wherein an inorganic mineral oxygen-isolating layer is arranged in the gap of the cable core; a first polyester belt is wrapped outside the cable core, a semi-conductive shielding layer is extruded outside the polyester belt, a steel belt armoring layer is arranged outside the inner semi-conductive shielding layer, a rock wool heat insulation layer is extruded outside the steel belt armoring layer, and a silica gel fireproof sleeve is arranged on the outermost layer of the cable; the cable core is formed by twisting a ground wire and two insulating wire cores which are symmetrically arranged by taking the ground wire as an axis in a straight shape; and a group of through holes are symmetrically arranged in the cable core by taking the ground wire as an axis.

In view of the above-mentioned related technologies, the inventors found that the flame-retardant cable can achieve a flame-retardant effect during use, but has a low structural strength and a short service life.

SUMMERY OF THE UTILITY MODEL

In order to improve the structural strength of cable, the application provides a high structural strength flame retarded cable.

The application provides a high structural strength flame retarded cable adopts following technical scheme:

the utility model provides a high structural strength flame retarded cable, includes outer ring, inner ring circle and connecting plate, connect through a plurality of connecting plates between outer ring circle and the inner ring circle, form the cable cavity between outer ring circle, inner ring circle and the adjacent connecting plate, install the sinle silk in the cable cavity, the packing has the filler that is used for fixing the sinle silk in the cable cavity, the outside of outer ring circle is equipped with insulating layer, steel band armor, fire-resistant fire-retardant layer and oversheath in proper order.

Through adopting above-mentioned technical scheme, outer ring circle and inner ring circle play the supporting role, have the guard action to the core, link together outer ring circle and inner ring circle through the connecting plate, have stronger structural strength, are applicable to comparatively slightly service environment, have improved the life of cable.

Preferably, the core comprises a core body, an insulating layer and a fire-resistant layer, the insulating layer is arranged on the outer periphery side of the core body, and the fire-resistant layer is arranged on the outer periphery side of the insulating layer.

Through adopting above-mentioned technical scheme, set gradually insulating layer and flame retardant coating at the periphery side of core, the flame retardant coating has improved the fire resistance of cable.

Preferably, the fill contains a viscous water fire extinguishing agent.

Through adopting above-mentioned technical scheme, add the viscous water fire extinguishing agent in the filler, further improved the fire behaviour of cable.

Preferably, a copper wire woven layer is arranged between the heat insulation layer and the steel tape armor layer, and an oxygen-isolating inner protection layer is arranged between the copper wire woven layer and the steel tape armor layer.

Through adopting above-mentioned technical scheme, set up the copper wire weaving layer between insulating layer and steel band armor to be equipped with between copper wire weaving layer and steel band armor and separate oxygen inner sheath, separate the effect that oxygen inner sheath has certain isolated oxygen, improved the fire behaviour of cable.

Preferably, the copper wire is woven to form a double-layer structure, and an aluminum foil layer is additionally arranged between the double-layer structure.

Through adopting above-mentioned technical scheme, adopt bilayer structure with the copper wire establishment, this kind of design has higher structural strength, has improved the life of cable, adds between two-layer structure and establishes the aluminium foil layer, and the aluminium foil layer has shielding ability, can shield the interference of external magnetic field to the sinle silk.

Preferably, the copper wire braided layer is formed by braiding a single copper wire and an elastic fiber rope.

Through adopting above-mentioned technical scheme, adopt the copper wire to weave, have stronger structural strength, life is longer.

Preferably, the steel strip armor layer is made of a double-layer galvanized steel strip.

Through adopting above-mentioned technical scheme, the corrosion resisting property of cable has been improved to the galvanized steel pipe.

Preferably, the fire-resistant flame-retardant layer is formed by mixing active aluminum hydroxide hydrate or magnesium hydroxide hydrate and sodium silicate.

By adopting the technical scheme, as the fireproof flame-retardant layer contains a large amount of aluminum hydroxide hydrate (or magnesium hydroxide hydrate), a large amount of water is decomposed at high temperature to form water mist, so that the effects of cooling and fire prevention are achieved, a hard shell can be formed at high temperature, and the heat insulation performance is good.

In summary, the present application includes at least one of the following beneficial technical effects:

the outer ring, the inner ring and the connecting plate are arranged, the outer ring and the inner ring play a supporting role and have a protection role on the cable core, and the outer ring and the inner ring are connected together through the connecting plate, so that the cable has strong structural strength, is suitable for a severe use environment, and prolongs the service life of the cable;

the insulating layer and the fire-resistant layer are sequentially arranged on the outer peripheral side of the core body, so that the fire resistance of the cable is improved by the fire-resistant layer;

by adding the viscous water fire extinguishing agent into the filler, the flame retardant property of the cable is further improved.

Drawings

Fig. 1 is a cross-sectional view of the present application.

Description of reference numerals: 1. an outer ring; 2. an inner ring; 3. a connecting plate; 4. a cable chamber; 5. a wire core; 51. a core body; 52. an insulating layer; 53. a refractory layer; 6. a filler; 7. a thermal insulation layer; 8. a copper wire braid layer; 9. an oxygen-insulating inner protective layer; 10. a steel tape armor layer; 11. a fire resistant flame retardant layer; 12. an outer sheath.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses high structural strength flame retarded cable. Referring to fig. 1, a high structural strength flame retarded cable, includes outer ring 1, inner ring 2 and connecting plate 3, connects through a plurality of connecting plates 3 between outer ring 1 and the inner ring 2, and outer ring 1 is the ring form, and inner ring 2 is discoid, and connecting plate 3 is fan-shaped. Form cable cavity 4 between outer ring 1, inner ring 2 and the adjacent connecting plate 3, install sinle silk 5 in the cable cavity 4, the packing that is used for carrying out sinle silk 5 with cable cavity 4 intussuseption is fixed filler 6, contains the viscidity water fire extinguishing agent in the filler 6. Preferably, the filler 6 is a glass fiber rope.

The core 5 includes a core body 51, an insulating layer 52, and a flame retardant coating 53, the insulating layer 52 being provided on an outer peripheral side of the core body 51, and the flame retardant coating 53 being provided on an outer peripheral side of the insulating layer 52. Preferably, the insulating layer 52 is made of cross-linked polyethylene, and the fire-resistant layer 53 is made of inorganic mineral insulating material.

The outer side of the outer ring 1 is sequentially provided with a heat insulation layer 7, a copper wire braid layer 8, an oxygen insulation inner protection layer 9, a steel belt armor layer 10, a fireproof flame-retardant layer 11 and an outer sheath 12.

Wherein, the heat insulation layer 7 is formed by winding and wrapping an alkali-free glass fiber belt. The copper wire braided layer 8 is formed by weaving a single copper wire and an elastic fiber rope, and the copper wire is woven to adopt a double-layer structure, adds between two-layer structure and establishes the aluminium foil layer.

The oxygen-insulating inner protection layer 9 is formed by wrapping low-smoke halogen-free oxygen-insulating materials. A large amount of hydrated metal oxides are filled in the oxygen-isolating inner protection layer 9, when the cable is heated, water molecules are evaporated to absorb most of heat, the temperature of the cable can be reduced, the formed water molecules can dilute the concentration of oxygen around the cable, the burnt metal oxide products form a hard shell which is coated outside the cable core to prevent flame and heat from spreading to the inside of the cable, and meanwhile, the oxygen-isolating layer plays a role of an isolating sleeve.

The steel tape armoring layer 10 is made of double-layer galvanized steel tapes, and the steel tapes are armored, so that the mechanical property of the cable can be improved, and the impact resistance is enhanced; meanwhile, the flame can be blocked, the internal structure of the cable is protected, and the flame is prevented from spreading inside the cable.

The fire-resistant flame-retardant layer 11 is formed by mixing active aluminum hydroxide hydrate or magnesium hydroxide hydrate and sodium silicate. A large amount of water is decomposed at high temperature to form water mist, so that the effects of cooling and fire prevention are achieved, a hard shell can be formed after the high temperature, and the heat insulation performance is good.

The implementation principle of the high-structural-strength flame-retardant cable in the embodiment of the application is as follows: outer ring circle 1 and inner ring circle 2 play the supporting role, have the guard action to sinle silk 5, link together outer ring circle 1 and inner ring circle 2 through connecting plate 3, have stronger structural strength, are applicable to comparatively slightly service environment, have improved the life of cable.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (7)

1. The utility model provides a high structural strength flame retarded cable which characterized in that: including outer ring (1), inner ring (2) and connecting plate (3), connect through a plurality of connecting plates (3) between outer ring (1) and the inner ring (2), form cable cavity (4) between outer ring (1), inner ring (2) and adjacent connecting plate (3), install sinle silk (5) in cable cavity (4), cable cavity (4) intussuseption is filled with and is used for carrying out filler (6) fixed with sinle silk (5), the outside of outer ring (1) is equipped with insulating layer (7), steel band armor (10), fire-resistant flame retardant layer (11) and oversheath (12) in proper order.

2. A high structural strength flame retardant cable according to claim 1, wherein: the wire core (5) comprises a core body (51), an insulating layer (52) and a fire-resistant layer (53), wherein the insulating layer (52) is arranged on the outer periphery side of the core body (51), and the fire-resistant layer (53) is arranged on the outer periphery side of the insulating layer (52).

3. A high structural strength flame retardant cable according to claim 1, wherein: the filler (6) contains a viscous water fire extinguishing agent.

4. A high structural strength flame retardant cable according to claim 1, wherein: a copper wire braided layer (8) is arranged between the heat insulation layer (7) and the steel tape armor layer (10), and an oxygen-isolating inner protection layer (9) is arranged between the copper wire braided layer (8) and the steel tape armor layer (10).

5. The high structural strength flame retardant cable of claim 4, wherein: the copper wire braided layer (8) adopts a double-layer structure, and an aluminum foil layer is additionally arranged between the two layers of structures.

6. The high structural strength flame retardant cable of claim 4, wherein: the copper wire braided layer (8) is formed by braiding a single copper wire and an elastic fiber rope.

7. A high structural strength flame retardant cable according to claim 1, wherein: the steel strip armor layer (10) is made of double-layer galvanized steel strips.

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