CN211125107U

CN211125107U - Cable for 1KV marine halogen-free low-smoke frequency converter

Info

Publication number: CN211125107U
Application number: CN201922144850.XU
Authority: CN
Inventors: 王冰; 白云鹏
Original assignee: Shenyang Shenlan Sihuan Cable Manufacturing Co ltd
Current assignee: Shenyang Shenlan Sihuan Cable Manufacturing Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-07-28
Anticipated expiration: 2029-12-04

Abstract

A cable for a 1KV marine halogen-free low-smoke frequency converter is characterized in that a twisted tinned copper wire conductor is extruded with a wire core formed by a crosslinked polyethylene insulating layer, and a first layer of wrapping tape, a first inner sheath, a copper wire braided shielding layer, a second layer of wrapping tape, a second inner sheath, a steel wire braided armor, a third layer of wrapping tape and an outer sheath are sequentially wrapped around the wire core. The utility model discloses the tinned copper wire stranded conductor of conductor that uses, the metal shielding layer uses tinned copper wire braided shield and galvanized steel wire to weave the armor, and the sheath adopts the interior walnut of having no steamed low cigarette and having no asbestos, has guaranteed nontoxic, low cigarette security of product, under the difficult fire, fire-retardant prerequisite, in case outside the conflagration etc. takes place, the nontoxic effect of the utility model can prevent personnel from inhaling the emergence of poisoning accident; the low smoke characteristic can also prevent people from inhaling, and the visual field cannot be blurred, so that the escape is not influenced, and the time is strived for rescue and emergency escape.

Description

Cable for 1KV marine halogen-free low-smoke frequency converter

Technical Field

The utility model relates to the technical field of cables, a marine no halogen low cable for converter of 1KV is provided very much.

Background

The marine power cable in the prior art uses halogen-containing materials as raw materials, generates a certain amount of hydrogen chloride toxic gas during combustion, has no electromagnetic shielding effect, and cannot meet the requirement of precise operation on water.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a transmission cable who provides the transmission electric energy for inverter motor in places such as naval vessel, offshore oil platform.

The utility model particularly provides a marine no halogen low cable for converter of 1KV, outside the sinle silk of crowded package crosslinked polyethylene insulating layer 1 formation outside the tinned copper wire conductor 2 of transposition, weave shielding layer 5, second layer band 4, second inner sheath 9, steel wire woven armor 8, third layer band 7, oversheath 6 around package first layer band 10, first inner sheath 3, copper wire in proper order.

And filling ropes 11 are arranged between the wire cores and the first layer of wrapping tape 10.

Specifically, the first layer of wrapping tape 10, the second layer of wrapping tape 4 and the third layer of wrapping tape 7 are all low-smoke halogen-free flame-retardant wrapping tapes. The first inner sheath 3 is specifically a low-smoke halogen-free flame-retardant polyolefin inner sheath. The copper wire braided shielding layer 5 is a tinned copper wire. The second inner sheath 9 is a low-smoke halogen-free flame-retardant polyolefin inner sheath. The steel wire braided armor 8 is galvanized steel wire. The outer sheath 6 is specifically a low-smoke halogen-free flame-retardant polyolefin outer sheath. The filling rope 11 is specifically a flame-retardant glass fiber filling rope.

In order to obtain better current-carrying capacity, the cores are used in groups, and each cable is provided with three groups of cores.

The utility model discloses the tinned copper wire stranded conductor of conductor that uses, the metal shielding layer uses tinned copper wire braided shield and galvanized steel wire to weave the armor, and the sheath adopts the interior walnut of having no steamed low cigarette and having no asbestos, has guaranteed nontoxic, low cigarette security of product, under the difficult fire, fire-retardant prerequisite, in case outside the conflagration etc. takes place, the nontoxic effect of the utility model can prevent personnel from inhaling the emergence of poisoning accident; the low smoke characteristic can also prevent people from inhaling, and the visual field cannot be blurred, so that the escape is not influenced, and the time is strived for rescue and emergency escape.

The utility model discloses set up the multilayer shielding layer, consequently the cable is outstanding to the electromagnetic shield effect, can shield the induced current that the frequency conversion produced, can increase the relative life of converter cable.

Drawings

The invention is described in further detail below with reference to the drawings in the specification:

fig. 1 is a schematic cross-sectional view of the present invention.

Description of the symbols of the drawings:

1 insulating layer, 2 tinned copper wire conductors, 3 first inner sheaths, 4 second layers of wrapping tapes, 5 copper wire braided shielding layers, 6 outer sheaths, 7 third layers of wrapping tapes, 8 steel wire braided armors, 9 second inner sheaths, 10 first layers of wrapping tapes and 11 filling ropes.

Detailed Description

Example 1

A cable for a 1KV marine halogen-free low-smoke frequency converter is characterized in that a twisted tinned copper wire conductor 2 is externally extruded with a wire core formed by a crosslinked polyethylene insulating layer 1, and a first layer of wrapping tape 10, a first inner sheath 3, a copper wire braided shielding layer 5, a second layer of wrapping tape 4, a second inner sheath 9, a steel wire braided armor 8, a third layer of wrapping tape 7 and an outer sheath 6 are sequentially wrapped around the wire core.

The tinned copper wire stranded conductor of the conductor used in the embodiment is characterized in that the tinned copper wire braided shield and the galvanized steel wire braided armor are used as the metal shielding layer, and the halogen-free low-smoke asbestos-free inner and outer walnuts are used as the sheath, so that the non-toxic and low-smoke safety of the product is ensured; the low smoke characteristic can also prevent people from inhaling, and the visual field cannot be blurred, so that the escape is not influenced, and the time is strived for rescue and emergency escape.

The embodiment is provided with the multilayer shielding layers, so that the cable has a remarkable electromagnetic shielding effect, can shield induced current generated by frequency conversion, and can prolong the relative service life of the cable of the frequency converter.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Moreover, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Claims

1. A cable for a 1KV marine halogen-free low-smoke frequency converter is characterized in that: the method comprises the following steps that a first layer of wrapping tape (10), a first inner sheath (3), a copper wire braided shielding layer (5), a second layer of wrapping tape (4), a second inner sheath (9), a steel wire braided armor (8), a third layer of wrapping tape (7) and an outer sheath (6) are sequentially wrapped outside a wire core formed by extruding and wrapping a cross-linked polyethylene insulating layer (1) outside a twisted tinned copper wire conductor (2);

and filling ropes (11) are arranged between the wire cores and the first layer of wrapping tape (10).

2. A cable according to claim 1, wherein: the first layer of wrapping tape (10), the second layer of wrapping tape (4) and the third layer of wrapping tape (7) are all low-smoke halogen-free flame-retardant wrapping tapes;

the first inner sheath (3) is a low-smoke halogen-free flame-retardant polyolefin inner sheath;

the copper wire braided shielding layer (5) is a tinned copper wire;

the second inner sheath (9) is a low-smoke halogen-free flame-retardant polyolefin inner sheath;

the steel wire braided armor (8) is a galvanized steel wire;

the outer sheath (6) is a low-smoke halogen-free flame-retardant polyolefin outer sheath;

the filling rope (11) is a flame-retardant glass fiber filling rope.

3. A cable according to claim 1, wherein: the wire cores are used in groups.

4. A cable according to claim 3, wherein: each cable is provided with three groups of wire cores.