CN212113295U

CN212113295U - Fireproof cable for instruments and meters

Info

Publication number: CN212113295U
Application number: CN202021082728.0U
Authority: CN
Inventors: 王筱卿
Original assignee: Shanghai Xinyi Special Cable Co ltd
Current assignee: Shanghai Xinyi Special Cable Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-12-08
Anticipated expiration: 2030-06-12

Abstract

The utility model belongs to the wire and cable field relates to a fireproof cable for instrument and meter, including the power sinle silk and set gradually first shielding layer, a plurality of control sinle silk, interior sheath, second shielding layer and the outer jacket in the power sinle silk outside. The power cable core comprises a power cable core conductor, a power cable core insulating layer and a power cable core metal protective layer, wherein the power cable core insulating layer and the power cable core metal protective layer are sequentially coated outside the power cable core conductor; the control sinle silk includes control sinle silk conductor and the cladding control sinle silk insulating layer in the control sinle silk conductor outside, and a plurality of control sinle silks are even circumference and distribute in the outside of first shielding layer. According to the utility model discloses a fireproof cable for instrument and meter can reduce occuping of circuit laying space when guaranteeing the whole security performance of cable.

Description

Fireproof cable for instruments and meters

Technical Field

The utility model belongs to the wire and cable field especially relates to a fireproof cable for instrument and meter.

Background

The fireproof cable taking the mica tape as the insulating material has excellent fireproof performance, is widely applied to important places such as high-rise buildings, industrial and mining enterprises, medical facilities and the like, and is an important component for improving the safety performance of a distribution line. In practical production and application, the mica tape insulation fireproof cable is divided into a power cable and a control cable, and needs to be laid and installed in a distribution line respectively. On the one hand, cable manufacturing cost, on the other hand have increased circuit and have laid and the installation cost, especially along with line integrated level is higher and higher, and space resources are more and more precious, and how when guaranteeing circuit fail safe nature ability, reduce manufacturing cost, reduce the occupation of circuit space, have important meaning.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a fireproof cable for instruments and meters.

According to an aspect of the utility model, a fireproof cable for instruments and meters is provided, which comprises a power wire core 1, and a first shielding layer 2, a plurality of control wire cores 3, an inner protective layer 4, a second shielding layer 5 and an outer protective layer 6 which are arranged outside the power wire core 1 in sequence; the power cable core 1 comprises a power cable core conductor 11, and a power cable core insulating layer 12 and a power cable core metal protective layer 13 which are sequentially coated outside the power cable core conductor 11; the control sinle silk 3 includes control sinle silk conductor 31 and the cladding is at the control sinle silk insulating layer 32 in the control sinle silk conductor 31 outside, and a plurality of control sinle silks 3 are even circumference distribution in the outside of first shielding layer 2.

According to an exemplary embodiment of the present invention, the power core conductor 11 is made by stranding annealed T2 copper conductors.

According to an exemplary embodiment of the present invention, the power core insulating layer 12 is made of a synthetic mica tape by transverse overlapping coating, wherein the coating angle is 30 ° -45 °, and the overlapping rate is 35% -55%.

According to the exemplary embodiment of the present invention, the power core metal sheath 13 is a flexible annealed corrugated copper pipe.

According to an exemplary embodiment of the present invention, the first shielding layer 2 is made of semiconductive cross-linked flame retardant polyethylene.

According to an exemplary embodiment of the present invention, the control wire core conductor 31 is made of an annealed T2 copper conductor.

According to the exemplary embodiment of the present invention, the control wire core insulating layer 32 is made of a synthetic mica tape by transverse overlapping coating, wherein the coating angle is 45 ° and the overlapping rate is 50%.

According to an exemplary embodiment of the present invention, the inner sheath 4 is made of alkali-free glass fiber cloth by transverse overlapping coating, wherein the coating angle is 20 ° to 45 °, and the overlapping rate is 25% to 45%.

According to an exemplary embodiment of the present invention, the second shielding layer (5) is made by longitudinally overlapping and cladding an annealed soft copper strip, wherein the thickness of the annealed soft copper strip is 0.1mm-0.2mm, and the longitudinal cladding overlap ratio is 10% -15%.

According to an exemplary embodiment of the present invention, the outer sheath 6 is made of low smoke zero halogen polyolefin.

Compared with the prior art, the utility model discloses a fireproof cable for instrument and meter through material selection and structural synthesis design, integrates power core and control core, can reduce occuping of circuit laying space when guaranteeing the whole security performance of cable.

Drawings

Fig. 1 is a schematic cross-sectional view of a fireproof cable for instruments and meters according to the present invention;

in the figure, 1-power core, 11-power core conductor, 12-power core insulating layer, 13-power core metal sheath, 2-first shielding layer, 3-control core, 31-control core conductor, 32-control core insulating layer, 4-inner protective layer, 5-second shielding layer, 6-outer protective layer.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in figure 1, the fireproof cable for the instruments and meters comprises a power wire core 1, and a first shielding layer 2, a plurality of control wire cores 3, an inner protection layer 4, a second shielding layer 5 and an outer protection layer 6 which are sequentially arranged on the outer side of the power wire core 1. The power cable core 1 comprises a power cable core conductor 11, and a power cable core insulating layer 12 and a power cable core metal protective layer 13 which are sequentially coated outside the power cable core conductor 11; the control sinle silk 3 includes control sinle silk conductor 31 and the cladding is at the control sinle silk insulating layer 32 in the control sinle silk conductor 31 outside, and a plurality of control sinle silks 3 are even circumference distribution in the outside of first shielding layer 2.

Specifically, the power core conductor 11 is stranded from an annealed T2 copper conductor.

The power wire core insulating layer 12 is made by transversely overlapping and coating a synthetic mica tape, wherein the coating angle is 30-45 degrees, and the overlapping rate is 35-55 percent.

The power wire core metal protective layer 13 is a flexible annealing state corrugated copper pipe.

The first shielding layer 2 is a semiconductive cross-linked flame retardant polyethylene layer.

The control line core conductor 31 is made of an annealed state T2 copper conductor.

The control wire core insulating layer 32 is made by transversely overlapping and coating a synthetic mica tape, wherein the coating angle is 45 degrees, and the overlapping rate is 50 percent.

The inner protective layer 4 is made of alkali-free glass fiber cloth through transverse overlapping and covering, wherein the covering angle is 20-45 degrees, and the overlapping rate is 25-45 percent.

The second shielding layer 5 is made of annealed soft copper strips in a longitudinal overlapping and cladding mode, wherein the thickness of the annealed soft copper strips is 0.1-0.2 mm, and the longitudinal cladding overlapping rate is 10% -15%.

The outer jacket 6 is made of low smoke halogen-free polyolefin.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The fireproof cable for the instruments and the meters is characterized by comprising a power wire core (1), and a first shielding layer (2), a plurality of control wire cores (3), an inner protection layer (4), a second shielding layer (5) and an outer protection layer (6) which are sequentially arranged on the outer side of the power wire core (1); the power cable core (1) comprises a power cable core conductor (11), and a power cable core insulating layer (12) and a power cable core metal protective layer (13) which are sequentially coated on the outer side of the power cable core conductor (11); control sinle silk (3) are including control sinle silk conductor (31) and cladding control sinle silk insulating layer (32) in control sinle silk conductor (31) outside, and a plurality of control sinle silks (3) are even circumference and distribute in the outside of first shielding layer (2).

2. The instrument fire-resistant cable of claim 1, wherein the power core conductor (11) is stranded from an annealed T2 copper conductor.

3. The fireproof cable for instruments and meters according to claim 1, wherein the power wire core insulating layer (12) is made of synthetic mica tapes by transverse overlapping coating, wherein the coating angle is 30-45 degrees, and the overlapping rate is 35-55%.

4. The fireproof cable for instruments and meters according to claim 1, wherein the power core metal sheath (13) is a flexible annealed corrugated copper tube.

5. The fireproof cable for instruments and meters according to claim 1, wherein the first shielding layer (2) is made of semiconductive crosslinked flame retardant polyethylene.

6. The instrument fire-resistant cable according to claim 1, wherein the control wire core conductor (31) is made of T2 annealed copper conductor.

7. The instrument and meter fireproof cable of claim 1, wherein the control wire core insulating layer (32) is made of a synthetic mica tape by transverse overlapping coating, wherein the coating angle is 45 ° and the overlapping rate is 50%.

8. The instrument and meter flameproof cable of claim 1, characterized in that the inner sheath (4) is made of alkali-free glass fiber cloth with a transverse overlapping coating, wherein the coating angle is 20 ° to 45 ° and the overlapping ratio is 25% to 45%.

9. The fireproof cable for instruments and meters according to claim 1, wherein the second shielding layer (5) is made of annealed soft copper strips which are longitudinally overlapped and coated, wherein the thickness of the annealed soft copper strips is 0.1mm-0.2mm, and the longitudinal coating overlapping rate is 10% -15%.

10. The instrument fireproof cable according to claim 1, wherein the outer sheath (6) is made of low smoke zero halogen polyolefin.