阅读说明：本技术 一种金属绝缘任意剪切式铠装加热电缆 (Metal-insulated arbitrary-shearing armored heating cable ) 是由 李贻连 卜基峰 姚月凤 于 2020-12-16 设计创作，主要内容包括：本发明涉及铠装电缆技术领域,尤其涉及一种金属绝缘任意剪切式铠装加热电缆,包括导体、绝缘层、金属铠装和护套,所述导体与其外部的绝缘层形成绝缘线芯,绝缘线芯的外部与成缆紧扎带之间设有填充,成缆紧扎带的外部为金属铠装,金属铠装的外部为内护套,内护套的外侧包覆有外护套。本发明中,此金属绝缘任意剪切式铠装加热电缆不仅便于进行任意切割,同时对金属铠装和外护套安装时,通过对金属铠装的外侧进行打磨,从而使得金属铠装与护套在安装时可以相互贴合,大大提高了生产效率,更好的满足了生产及使用需求。(The invention relates to the technical field of armored cables, in particular to a metal-insulated random-shearing armored heating cable which comprises a conductor, an insulating layer, a metal armor and a sheath, wherein the conductor and the insulating layer outside the conductor form an insulating wire core, filling is arranged between the outside of the insulating wire core and a cable-forming tightening belt, the metal armor is arranged outside the cable-forming tightening belt, an inner sheath is arranged outside the metal armor, and an outer sheath is wrapped outside the inner sheath. According to the metal-insulated arbitrary-shearing armored heating cable, the metal-insulated arbitrary-shearing armored heating cable is convenient to cut arbitrarily, and meanwhile, when the metal armor and the outer sheath are installed, the outer side of the metal armor is polished, so that the metal armor and the outer sheath can be attached to each other when being installed, the production efficiency is greatly improved, and the production and use requirements are better met.)

1. The utility model provides an arbitrary shear type armoured heating cable of metal insulation, includes conductor, insulating layer, metal armor (5) and sheath, its characterized in that, the conductor forms insulating core rather than the insulating layer of outside, is equipped with between insulating core's outside and the tight ribbon of stranding (4) and fills (3), and the outside of the tight ribbon of stranding (4) is metal armor (5), and the outside of metal armor (5) is inner sheath (6), and the outside cladding of inner sheath (6) has oversheath (7).

2. A metal-insulated, random-shear, sheathed heating cable according to claim 1, wherein the conductor comprises a central conductor (101) and a plurality of sector conductors (102), and the central conductor (101) is located in the middle of the sector conductors (102).

3. A metal-insulated, random-shear, sheathed heating cable according to claim 2, wherein the outside of the central conductor (101) is coated with a central insulating layer (201) and the outside of the sector-shaped conductor (102) is coated with a sector-shaped insulating layer (202).

4. A metal-insulated, random shear-type sheathed heating cable according to claim 1, wherein the metal sheath (5) is a thin round rod or a near thin round rod with a diameter of 3mm to 5 mm.

5. A metal-insulated, random-shear, sheathed heating cable according to claim 1, characterized in that both sides of the metal sheath (5) are ground, the ratio of the diameter of the ground metal sheath (5) to the diameter of the metal sheath (5) before grinding being 0.8: 1, the polishing surface on one side of the metal armor (5) is attached to the outer wall of the inner sheath (6), and the polishing surface on the other side of the metal armor (5) is attached to the inner wall of the outer sheath (7).

6. The metal-insulated, random-shear, sheathed heating cable of claim 1, wherein the metal sheath (5) is made of galvanized or plastic-coated steel wire.

7. The metal-insulated random shear type armored heating cable according to claim 1, wherein the inner sheath (6) and the outer sheath (7) are both made of polyvinyl chloride, the thickness of the inner sheath (6) is 0.3mm-0.35mm, and the thickness of the outer sheath (7) is 5mm-6 mm.

Technical Field

The invention relates to the technical field of armored cables, in particular to a metal-insulated arbitrary-shearing armored heating cable.

Background

In order to prevent to receive mechanical damage, power cable forms the armoured cable at outer armor protective layer, and the temperature measurement, signal transmission and the special heating of armoured cable mainly used chemical industry, metallurgy, machine-building, electricity generation and scientific experiment etc. current armoured cable not enough lies in: the cost of armoured cable is higher, and especially when carrying out the sheath installation to the metal armor of armoured cable, often can take place to skid the aversion because of the smooth outer layer of metal armor and sheath to reduce production efficiency, the cable after the shaping is not convenient for cut simultaneously, for this reason, we have provided a metal insulation arbitrary shear type armoured heating cable.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a metal-insulated random-shearing armored heating cable.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an arbitrary shear type armoured heating cable of metal insulation, includes conductor, insulating layer, metal armor and sheath, the conductor forms insulating core rather than the outside insulating layer, is equipped with the packing between insulating core's the outside and the tight ribbon of stranding, and the outside of the tight ribbon of stranding is metal armor, and the outside of metal armor is the inner sheath, and the outside cladding of inner sheath has the oversheath.

Preferably, the conductor comprises a central conductor and a plurality of sector conductors, and the central conductor is positioned in the middle of the sector conductors.

Preferably, the outer side of the central conductor is coated with a central insulating layer, and the outer side of the fan-shaped conductor is coated with a fan-shaped insulating layer.

Preferably, the metal armor is a thin round rod or an approximately thin round rod with the diameter of 3mm-5 mm.

Preferably, the two sides of the metal armor are polished, and the ratio of the diameter of the polished metal armor to the diameter of the metal armor before polishing is 0.8: 1, the polishing surface on one side of the metal armor is attached to the outer wall of the inner sheath, and the polishing surface on the other side of the metal armor is attached to the inner wall of the outer sheath.

Preferably, the metal armor is made of galvanized steel wires or plastic-coated steel wires.

Preferably, the inner sheath and the outer sheath are made of polyvinyl chloride, the thickness of the inner sheath is 0.3mm-0.35mm, and the thickness of the outer sheath is 5mm-6 mm.

The invention has the beneficial effects that:

according to the metal-insulated arbitrary-shearing armored heating cable, the metal-insulated arbitrary-shearing armored heating cable is convenient to cut arbitrarily, and meanwhile, when the metal armor and the outer sheath are installed, the outer side of the metal armor is polished, so that the metal armor and the outer sheath can be attached to each other when being installed, the production efficiency is greatly improved, and the production and use requirements are better met.

Drawings

FIG. 1 is a schematic cross-sectional view of a metal-insulated random-shear sheathed heating cable according to the present invention;

fig. 2 is an enlarged view of a in fig. 1 of a metal-insulated random-shear-type sheathed heating cable according to the present invention.

In the figure: 101 center conductor, 102 sector conductor, 201 center insulation, 202 sector insulation, 3 fill, 4 cable tie, 5 metal armor, 6 inner jacket, 7 outer jacket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a metal-insulated random-shearing armored heating cable comprises a conductor, an insulating layer, a metal armor 5 and a sheath, wherein the conductor and the insulating layer outside the conductor form an insulating wire core, the conductor comprises a central conductor 101 and a plurality of fan-shaped conductors 102, the central conductor 101 is positioned in the middle of the fan-shaped conductors 102, the central insulating layer 201 is coated on the outer side of the central conductor 101, and the fan-shaped insulating layer 202 is coated on the outer side of the fan-shaped conductors 102;

the metal armor 5 is a thin round bar or an approximate thin round bar with the diameter of 3mm-5mm, the metal armor 5 is made of galvanized steel wires or plastic-coated steel wires, the galvanized steel wires have good tensile strength, the tensile strength of the galvanized steel wires is 900MPa-2200MPa, and the plastic layer coated on the outer side of the plastic-coated steel wires has the corrosion resistance of media such as acid resistance, alkali resistance, salt resistance and the like;

the operation of polishing is carried out to the both sides of metal armor 5, and the diameter of the metal armor 5 after polishing compares with the diameter proportion of metal armor 5 before polishing and is 0.8: 1, a polishing surface on one side of a metal armor 5 is attached to the outer wall of an inner sheath 6, a polishing surface on the other side of the metal armor 5 is attached to the inner wall of an outer sheath 7, and the outer side of the metal armor 5 is polished, so that the metal armor 5 and the sheath can be attached to each other during installation, the production efficiency is greatly improved, and the production and use requirements are better met;

the packing 3 is arranged between the outside of the insulated wire core and the cabling tightening belt 4, the metal armor 5 is arranged outside the cabling tightening belt 4, the inner sheath 6 is arranged outside the metal armor 5, the outer side of the inner sheath 6 is coated with the outer sheath 7, the inner sheath 6 and the outer sheath 7 are made of polyvinyl chloride, the thickness of the inner sheath 6 is 0.3mm-0.35mm, the thickness of the outer sheath 7 is 5mm-6mm, and in the subsequent processing, the metal insulated arbitrary shearing type armored heating cable can be cut arbitrarily by a better operator.

In this embodiment, the metal-insulated arbitrary-shear-type armored heating cable includes a conductor, an insulating layer, a metal armor 5 and a sheath, where the conductor and the insulating layer outside the conductor form an insulating core, the conductor includes a central conductor 101 and a plurality of fan-shaped conductors 102, the outside of the central conductor 101 is covered with a central insulating layer 201, and the outside of the fan-shaped conductors 102 is covered with a fan-shaped insulating layer 202;

in the embodiment, the metal armor 5 is a thin round bar or an approximate thin round bar with the diameter of 3mm-5mm, the metal armor 5 is made of galvanized steel wires or plastic-coated steel wires, the galvanized steel wires have good tensile strength, the tensile strength of the galvanized steel wires is 900MPa-2200MPa, and the plastic layer coated on the outer side of the plastic-coated steel wires has the corrosion resistance to acid, alkali, salt and other media;

in this embodiment, the ratio of the diameter of the polished metal sheath 5 to the diameter of the metal sheath 5 before polishing is 0.8: 1, a polishing surface on one side of a metal armor 5 is attached to the outer wall of an inner sheath 6, a polishing surface on the other side of the metal armor 5 is attached to the inner wall of an outer sheath 7, and the outer side of the metal armor 5 is polished, so that the metal armor 5 and the sheath can be attached to each other during installation, the production efficiency is greatly improved, and the production and use requirements are better met;

in the embodiment, the inner sheath 6 and the outer sheath 7 are made of polyvinyl chloride, the inner sheath 6 is 0.3-0.35 mm thick, the outer sheath 7 is 5-6 mm thick, and when the metal insulation random shearing armored heating cable is subsequently processed, an operator can conveniently cut the metal insulation random shearing armored heating cable randomly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.