CN213092865U

CN213092865U - Oxygen-barrier flame-retardant cable

Info

Publication number: CN213092865U
Application number: CN202022069818.2U
Authority: CN
Inventors: 郑光泽; 彭纪都; 郑光远
Original assignee: Zhejiang Jiaze Cable Co ltd
Current assignee: Zhejiang Jiaze Cable Co ltd
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2021-04-30
Anticipated expiration: 2030-09-19

Abstract

The utility model relates to a separate oxygen layer flame retarded cable, establish the sheath in the wire core outside including wire core and cover, it has a separate oxygen layer to fill between sheath and the wire core, the sheath outside is provided with the wearing layer, be provided with the tensile layer between wearing layer and the sheath, the length direction interval of wire core is followed to the lateral wall of wearing layer is provided with a plurality of wear-resisting rings. The wearing layer in the sheath outside can improve the wear resistance of sheath lateral wall, and wear-resisting ring can reduce the area of contact of wearing layer and ground simultaneously to avoid the sheath to be worn out by accident, guarantee the normal use of cable.

Description

Oxygen-barrier flame-retardant cable

Technical Field

The application relates to the field of cables, in particular to an oxygen barrier flame-retardant cable.

Background

The cable is made of one or more mutually insulated conductors and a sheath. The oxygen-isolating layer fireproof technology is characterized in that a conductor is wrapped by the oxygen-isolating layer composed of metal hydrate, and when a cable burns, the oxygen-isolating layer releases crystal water at high temperature, so that the ignition point is reduced to achieve the purpose of fire isolation and even fire prevention.

At present, the patent with publication number CN202110869U discloses a tough high flame-retardant oxygen-isolating layer cable with rated voltage of 0.6/1kV and below, which comprises a plurality of twisted core wires, wherein the core wires comprise conductors and low-smoke halogen-free polyolefin insulating layers arranged outside the conductors, an isolating layer is arranged outside the twisted core wires, an oxygen-isolating layer consisting of metal hydrate is arranged outside the isolating layer, and a sheath layer is arranged outside the oxygen-isolating layer. The isolation layer is around package high fire-retardant fire-proof glass cloth band to be equipped with mineral insulation material and fill, consequently not only have the effect of fire prevention, and bending property is better.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the cable is laid, the sheath layer on the outer side of the cable is easy to rub against the ground, so that abrasion or breakage is caused, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the sheath rubs with the ground and is worn or cracked, the application provides an oxygen barrier layer flame retardant cable.

The application provides a separate oxygen layer flame retarded cable adopts following technical scheme:

the utility model provides a separate oxygen layer flame retarded cable, includes that wire core and cover establish the sheath in the wire core outside, it has a separate oxygen layer to fill between sheath and the wire core, the sheath outside is provided with the wearing layer, be provided with the tensile layer between wearing layer and the sheath, the lateral wall of wearing layer is provided with a plurality of wear-resisting rings along the length direction interval of wire core.

Through adopting above-mentioned technical scheme, the wearing layer in the sheath outside can improve the wear resistance of sheath lateral wall, and wear-resisting ring can reduce the area of contact of wearing layer and ground simultaneously to avoid the sheath to be worn out by accident, guarantee the normal use of cable.

Preferably, a plurality of heat dissipation holes are formed in the outer side wall of the wear-resisting ring at intervals along the circumferential direction.

Through adopting above-mentioned technical scheme, the louvre can increase the radiating effect of wear-resisting ring department to avoid the cable to locate the high temperature at wear-resisting ring.

Preferably, the wear-resistant layer is a nitrile rubber layer.

By adopting the technical scheme, the nitrile rubber layer has good wear resistance, so that the wear-resistant layer is prevented from being accidentally worn out when being installed.

Preferably, the tensile layer is in a net shape.

Through adopting above-mentioned technical scheme, the tensile layer sets to netted, can save the material on the one hand, and on the other hand guarantees the radiating effect of sheath.

Preferably, the tensile layer is a carbon fiber layer.

Through adopting above-mentioned technical scheme, the carbon fiber layer has good high temperature resistant, antifriction, heat conduction and corrosion-resistant characteristic to improve the tensile properties of sheath, the tensile layer also can derive the heat fast simultaneously, reduces the inside temperature of cable.

Preferably, the oxygen barrier layer is a manganese hydroxide layer.

By adopting the technical scheme, the manganese hydroxide layer releases crystal water after meeting high temperature, thereby reducing the ignition point to achieve the effect of fire insulation.

Preferably, the wire core includes a plurality of copper core, the inner chamber of sheath is provided with support piece, support piece includes the support column that sets up with the same axial lead of sheath, the lateral wall of support column is provided with a plurality of support bars, every along the circumference interval the length direction setting of support column is all followed to the support bar, all the support bar separates into a plurality of cavities that supply the copper core to put into respectively with the inner chamber of sheath.

By adopting the technical scheme, the supporting bars on the supporting columns divide the interior of the sheath into a plurality of cavities for the copper core wires to be clamped in, so that the copper core wires are conveniently classified and placed on one hand, and the later maintenance is facilitated; on the other hand, the supporting bar can give a holding power of sheath inside wall, avoids the copper core line to be crushed under the exogenic action.

Preferably, the reinforcing strips are connected between the two opposite sides of the supporting strip and the supporting column.

Through adopting above-mentioned technical scheme, the enhancement strip of support bar both sides can give a holding power of support bar to take place crooked when avoiding the support bar to receive the exogenic action.

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

the wear-resistant layer on the outer side of the sheath can improve the wear-resistant performance of the outer side wall of the sheath, and meanwhile, the wear-resistant ring can reduce the contact area between the wear-resistant layer and the ground, so that the sheath is prevented from being accidentally worn out, and the normal use of the cable is ensured;

the supporting bars on the supporting columns divide the interior of the sheath into a plurality of cavities for the copper core wires to be clamped in, so that the copper core wires are conveniently classified and placed on one hand, and the later maintenance is facilitated; on the other hand, the supporting bar can give a holding power of sheath inside wall, avoids the copper core line to be crushed under the exogenic action.

Drawings

Fig. 1 is a schematic sectional view of the present embodiment.

Description of reference numerals: 1. a wire core; 11. a copper core wire; 2. a sheath; 3. an oxygen barrier layer; 4. a wear layer; 5. a wear ring; 51. heat dissipation holes; 6. a support member; 61. a support pillar; 62. a supporting strip; 63. a reinforcing strip; 7. a tensile layer.

Detailed Description

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

The embodiment of the application discloses separate oxygen layer flame retarded cable. Referring to fig. 1, the wire core 1 includes a plurality of copper core wires 11, and a sheath 2 disposed outside the wire core 1. The outer side of the sheath 2 is fixedly connected with a wear-resistant layer 4, and the wear-resistant layer 4 is a nitrile rubber layer and is a wear-resistant layer 4. The outer side wall of the wear-resistant layer 4 is integrally formed with a plurality of wear-resistant rings 5 with semicircular cross sections at intervals along the length direction of the wire core 1. The wearing layer 4 in the 2 outsides of sheath can improve the wear resistance of the 2 lateral walls of sheath, and the wear-resisting ring 5 can reduce the contact area of wearing layer 4 and ground, thereby avoiding the sheath 2 from being worn out by accident and ensuring the normal use of cable.

Referring to fig. 1, the outer side wall of the wear-resistant ring 5 is provided with a plurality of heat dissipation holes 51 at intervals along the circumferential direction, and the heat dissipation holes 51 can increase the heat dissipation effect of the wear-resistant ring 5, so that the cable is prevented from being too hot at the wear-resistant ring 5, and the normal use of the cable is ensured.

Referring to fig. 1, a reticular tensile layer 7 is fixedly connected between the wear-resistant layer 4 and the sheath 2, and the tensile layer 7 is a carbon fiber layer. The carbon fiber layer has good high temperature resistance, antifriction, heat conduction and corrosion resistance's characteristic to improve sheath 2's tensile properties, tensile layer 7 also can derive the heat fast simultaneously, reduces the inside temperature of cable.

Referring to fig. 1, a support 6 is arranged in an inner cavity of a sheath 2, the support 6 includes a support column 61 arranged coaxially with the sheath 2, four support bars 62 are integrally formed on an outer side wall of the support column 61 at intervals along the circumferential direction, and each support bar 62 is arranged along the length direction of the support column 61. One side of all the supporting strips 62, which is far away from the supporting column 61, is tightly attached to the inner side wall of the sheath 2, so that the inner cavity of the sheath 2 is divided into four chambers into which the copper core wires 11 are respectively put. The supporting bars 62 can provide a supporting force for the inner side wall of the sheath 2, so that the copper core wires 11 are prevented from being crushed under the action of an external force.

Referring to fig. 1, a reinforcing bar 63 with a triangular cross section is fixedly connected between the two opposite sides of the supporting bar 62 and the supporting column 61. The reinforcing bars 63 at both sides of the supporting bar 62 can provide a supporting force to the supporting bar 62, thereby preventing the supporting bar 62 from being inclined when being subjected to an external force.

Referring to fig. 1, an oxygen barrier layer 3 is filled between a sheath 2 and a conductor core 1, and the oxygen barrier layer 3 is a manganese hydroxide layer. The manganese hydroxide layer releases crystal water after meeting high temperature, thereby reducing the ignition point to achieve the effect of fire insulation.

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

1. The utility model provides a separate oxygen layer flame retarded cable, includes that wire core (1) and cover establish sheath (2) in wire core (1) outside, it has separate oxygen layer (3), its characterized in that to fill between sheath (2) and wire core (1): the utility model discloses a wire core, including sheath (2), wearing layer (4) are provided with in the sheath (2) outside, be provided with tensile layer (7) between wearing layer (4) and sheath (2), the length direction interval of wearing layer's (4) lateral wall along wire core (1) is provided with a plurality of wear-resisting rings (5).

2. The oxygen barrier flame retardant cable of claim 1, wherein: the outer side wall of the wear-resistant ring (5) is provided with a plurality of heat dissipation holes (51) at intervals along the circumferential direction.

3. The oxygen barrier flame retardant cable of claim 1, wherein: the wear-resistant layer (4) is a nitrile rubber layer.

4. The oxygen barrier flame retardant cable of claim 1, wherein: the tensile layer (7) is in a net shape.

5. The oxygen barrier flame retardant cable of claim 1, wherein: the tensile layer (7) is a carbon fiber layer.

6. The oxygen barrier flame retardant cable of claim 1, wherein: the oxygen isolation layer (3) is a manganese hydroxide layer.

7. The oxygen barrier flame retardant cable of claim 1, wherein: wire core (1) includes a plurality of copper core (11), the inner chamber of sheath (2) is provided with support piece (6), support piece (6) include support column (61) that set up with the same axial lead of sheath (2), the lateral wall of support column (61) is provided with a plurality of support bars (62), every along the circumference interval support bar (62) all set up, all along the length direction of support column (61) support bar (62) separate into a plurality of cavities that supply copper core (11) to put into respectively with the inner chamber of sheath (2).

8. The oxygen barrier flame retardant cable of claim 7, wherein: reinforcing bars (63) are connected between the two opposite sides of the supporting bar (62) and the supporting column (61).