CN215183206U

CN215183206U - High-temperature-resistant low-voltage cable

Info

Publication number: CN215183206U
Application number: CN202121384967.6U
Authority: CN
Inventors: 孙佳乐
Original assignee: Guangdong Kangmingda Industrial Co ltd
Current assignee: Guangdong Kangmingda Industrial Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-12-14
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a high temperature resistant type low tension cable, include cable main part, copper conductor, fire resistant mica tape, separate oxygen layer, packing rope, polyethylene insulating layer and semiconduction buffering water-blocking layer, cable main part inboard is equipped with the oversheath, the inboard parcel of oversheath has fire resistant mica tape, the inboard parcel in fire resistant mica tape has a separation oxygen layer, it is equipped with to separate oxygen in situ side the packing rope, packing rope one side is equipped with the copper conductor, the copper conductor outside is equipped with the polyethylene insulating layer, polyethylene insulating layer inboard is equipped with semiconduction buffering water-blocking layer. The utility model discloses a fire-resistant mica brings the fire resistance of reinforcing cable, and for reinforcing cable's high temperature resistance, this device is equipped with at a distance from the oxygen layer, can be effectual completely cut off oxygen, and further reinforcing cable's refractiveness is equipped with semi-conductive buffering water blocking layer in the device, lets the cable have good water blocking performance, has set up polyvinyl chloride insulating layer reinforcing electrical insulation nature.

Description

High-temperature-resistant low-voltage cable

Technical Field

The utility model relates to the technical field of cables, particularly, relate to a high temperature resistant type low tension cable.

Background

With the rapid development of national economy, the use amount and the use range of the wire and the cable as the main artery of the national economy are larger and larger. A wire cable is a cable for transmitting and distributing electric energy. The power transmission line is commonly used for urban underground power grids, leading-out lines of power stations, internal power supply of industrial and mining enterprises and underwater power transmission lines crossing rivers and sea. In the electric power lines, the specific gravity occupied by the electric wires and cables is gradually increasing. The electric wire and cable is used in the main line of the power system to transmit and distribute the high-power electric energy, including 1-500KV and above various voltage grades of various insulated electric wire and cable, according to the voltage to divide into high-tension cable and low-tension cable, the low-tension cable line compares with low-tension overhead line, although the fabrication cost is higher, lay and maintain comparatively difficult, because it has reliable operation, do not stand the pole, do not take up the ground, do not hinder the look, receive external influence characteristics such as being minor, but get the wide application in the low-tension distribution system.

In the prior art, for a cable for transmitting electric power, besides a flame-retardant sheath, a mica tape is wound on a conductor to be used as an insulating layer or inorganic mineral is used as the insulating layer; for insulation, communication signal cables require small capacitance of cable pairs, the existing pressure-resistant cables are not high in fire resistance, the wires and cables are difficult to have a good fire-resistant effect only by a fire-resistant layer, the generated high temperature can melt the wires and cables quickly to cause short circuit, and great potential safety hazards exist.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant type low tension cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high temperature resistant type low tension cable, includes cable main part, copper conductor, fire resistant mica tape, separates oxygen layer, packing rope, polyethylene insulating layer and semiconduction buffering water-blocking layer, the cable main part inboard is equipped with the oversheath, the inboard parcel of oversheath has fire resistant mica tape, the inboard parcel in fire resistant mica tape has separated the oxygen layer, it is equipped with the nylon skeleton to separate oxygen layer inboard, the nylon skeleton inboard is equipped with the packing rope, packing rope one side is equipped with the copper conductor, the copper conductor outside is equipped with the polyethylene insulating layer, polyethylene insulating layer inboard is equipped with semiconduction buffering water-blocking layer.

Further, an inner sheath wraps the inner side of the oxygen isolation layer, and the thickness of the inner sheath is 0.15 mm.

Further, the thickness of the outer sheath is 0.1mm, and the thickness of the outer sheath is the same as that of the inner sheath.

Further, the thickness of the fire-resistant mica tape is 0.25mm, and the thickness of the oxygen isolation layer is 0.20 mm.

Furthermore, the inner side of the inner sheath is wrapped with a filling layer, and the filling layer is a polypropylene tape.

Further, the thickness of the polyethylene insulating layer is 0.20mm, and the thickness of the semi-conductive buffer water-blocking layer is 0.15 mm.

Furthermore, a shielding layer is arranged between the polyethylene insulating layer and the semi-conductive buffer water-resistant layer, and the thickness of the shielding layer is 0.25 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model relates to a high temperature resistant type low tension cable, this device brings the fire behavior of reinforcing cable through fire-resistant mica, for the high temperature resistance of reinforcing cable, this device is equipped with at a distance from the oxygen layer, can effectually be isolated with oxygen, further reinforcing cable's refractiveness, be equipped with semiconduction buffering water blocking layer in the device, let the cable have good water blocking performance, the waterproof nature of reinforcing cable, polyvinyl chloride insulating layer reinforcing electrical insulation nature and heat resistance have been set up, and polyvinyl chloride insulating layer is more stable difficult by the corruption, the copper conductor outside of setting is equipped with shielding layer and polyethylene insulating layer and carries out insulation shield to the copper conductor, guarantee the safety in utilization of whole cable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a high temperature resistant low voltage cable according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the inside of a high temperature resistant low voltage cable according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a copper conductor of a high temperature resistant low voltage cable according to an embodiment of the present invention.

Reference numerals:

1. a cable body; 2. a copper conductor; 3. an outer sheath; 4. fire-resistant mica tapes; 5. an oxygen barrier layer; 6. an inner sheath; 7. a nylon skeleton; 8. a filling layer; 9. filling a rope; 10. a polyethylene insulating layer; 11. a shielding layer; 12. and a semi-conductive buffer water-resistant layer.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-3, a high temperature resistant low voltage cable according to an embodiment of the present invention includes a cable body 1, a copper conductor 2, a fire-resistant mica tape 4, an oxygen barrier layer 5, a filling rope 9, a polyethylene insulation layer 10 and a semi-conductive buffer water barrier layer 12, an outer sheath 3 is arranged on the inner side of the cable main body 1, the fire-resistant mica tape 4 is wrapped on the inner side of the outer sheath 3, the inner side of the fire-resistant mica tape 4 is wrapped with an oxygen-isolating layer 5, the inner side of the oxygen-isolating layer 5 is provided with a nylon framework 7, the inner side of the nylon framework 7 is provided with the filling rope 9, the nylon framework 7 mainly has the function of enhancing the toughness of the cable, the cable can be well protected, the copper conductor 2 is arranged on one side of the filling rope 9, the polyethylene insulating layer 10 is arranged on the outer side of the copper conductor 2, and the semi-conductive buffer water-resistant layer 12 is arranged on the inner side of the polyethylene insulating layer 10.

Through the above technical scheme of the utility model, 5 inboard parcels on oxygen layer separate have inner sheath 6, the thickness of inner sheath 6 is 0.15mm, the thickness of oversheath 3 is 0.1mm, the thickness of oversheath 3 is the same with inner sheath 6, the thickness of fire resistant mica tape 4 is 0.25mm, the thickness that separates oxygen layer 5 is 0.20mm, 6 inboard parcels of inner sheath have filling layer 8, filling layer 8 is the polypropylene area, the thickness of polyethylene insulating layer 10 is 0.20mm, the thickness of semiconduction buffering water blocking layer 12 is 0.15mm, be equipped with shielding layer 11 between polyethylene insulating layer 10 and the semiconduction buffering water blocking layer 12, shielding layer 11's thickness is 0.25 mm.

When specifically using, the utility model relates to a high temperature resistant type low tension cable, this device comes the fire resistance of reinforcing cable through fire resistant mica tape 4, for the high temperature resistance of reinforcing cable, this device is equipped with at a distance from oxygen layer 5, can be effectual carry out completely cut off oxygen, further reinforcing cable's refractiveness, be equipped with semi-conductive buffering water blocking layer 12 in the device, let the cable have good water blocking performance, the waterproof nature of reinforcing cable, polyvinyl chloride insulating layer 10 reinforcing electrical insulation nature and heat resistance have been set up, and polyvinyl chloride insulating layer 10 is more stable difficult by the corruption, 2 outsides of copper conductor of setting are equipped with shielding layer 11 and polyethylene insulating layer 10 and carry out insulation shield to copper conductor 2, guarantee the safety in utilization of whole cable.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-temperature resistant low-voltage cable is characterized by comprising a cable main body (1), a copper conductor (2), a fire-resistant mica tape (4), an oxygen-isolating layer (5), a filling rope (9), a polyethylene insulating layer (10) and a semi-conductive buffer water-blocking layer (12), an outer sheath (3) is arranged on the inner side of the cable main body (1), the fire-resistant mica tape (4) is wrapped on the inner side of the outer sheath (3), the inner side of the fire-resistant mica tape (4) is wrapped with an oxygen-isolating layer (5), the inner side of the oxygen-isolating layer (5) is provided with a nylon framework (7), the inner side of the nylon framework (7) is provided with the filling rope (9), one side of the filling rope (9) is provided with the copper conductor (2), the outer side of the copper conductor (2) is provided with the polyethylene insulating layer (10), and the inner side of the polyethylene insulating layer (10) is provided with the semi-conductive buffer water-resistant layer (12).

2. A high temperature resistant low voltage cable according to claim 1, wherein the oxygen barrier layer (5) is wrapped with an inner sheath (6), and the thickness of the inner sheath (6) is 0.15 mm.

3. A high temperature resistant low voltage cable according to claim 1, wherein the thickness of the outer sheath (3) is 0.1mm and the thickness of the outer sheath (3) and the inner sheath (6) is the same.

4. A high temperature resistant low voltage cable according to claim 1, wherein the thickness of the fire resistant mica tape (4) is 0.25mm and the thickness of the oxygen barrier layer (5) is 0.20 mm.

5. A high temperature resistant low voltage cable according to claim 2, wherein the inner sheath (6) is wrapped with a filler layer (8), and the filler layer (8) is a polypropylene tape.

6. A high-temperature-resistant low-voltage cable according to claim 1, wherein said polyethylene insulating layer (10) has a thickness of 0.20mm and said semi-conductive buffer and water-blocking layer (12) has a thickness of 0.15 mm.

7. A high temperature resistant low voltage cable according to claim 1, wherein a shielding layer (11) is provided between the polyethylene insulating layer (10) and the semi-conductive buffer water-resistant layer (12), and the thickness of the shielding layer (11) is 0.25 mm.