CN215680228U

CN215680228U - Mechanical impact resistant three-core fire-resistant power cable

Info

Publication number: CN215680228U
Application number: CN202122391155.0U
Authority: CN
Inventors: 池巍巍
Original assignee: Zhejiang Chnsung Cable Co ltd
Current assignee: Zhejiang Chnsung Cable Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-01-28
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a mechanical impact resistant three-core fire-resistant power cable, and relates to the technical field of power cables. The mechanical impact resistant three-core fire-resistant power cable comprises three groups of metal conductors and mechanical impact resistant components. This fire-resistant power cable of three cores of anti mechanical shock, through the triangular supports frame, fan-shaped packing block and fibrous cooperation of packing are used, can play the effect of protection to three metallic conductor of group, utilize triangular stability, make the structure of cable more stable, when meetting external force impact or extrusion, also can reduce the condition that metallic conductor appears warping to a certain extent, prolong its life, the insulating layer, fire-retardant layer and the setting on fire insulation layer, can be when the conflagration takes place, avoid the condition that the cable appears being burnt out, the setting of inner sheath and oversheath, play dual protection's effect, use seamless copper pipe as the sheath in comparatively dangerous place, can be better protect the cable.

Description

Mechanical impact resistant three-core fire-resistant power cable

Technical Field

The utility model relates to the technical field of power cables, in particular to a mechanical impact resistant three-core fire-resistant power cable.

Background

The electric wire and cable is a wire product used for transmitting electric (magnetic) energy and information and realizing electromagnetic energy conversion, and is applied to various places, different places are required to be suitable due to difference of environmental conditions, for example, dangerous places such as chemical engineering or petroleum, and the electric wire and cable are exposed in the air and can bear impact of various external forces.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one technical problem in the prior art, and provides a mechanical impact resistant three-core fire-resistant power cable which can solve the problem of insufficient strength of a cable sheath.

In order to achieve the purpose, the utility model provides the following technical scheme: the mechanical impact resistant three-core fire-resistant power cable comprises three groups of metal conductors and mechanical impact resistant assemblies, wherein the number of the metal conductors is three, insulating layers are fixedly adhered to the outer walls of the three groups of metal conductors, a triangular support frame is arranged on the outer wall of each insulating layer, the inner wall of each triangular support frame is in contact with the outer wall of each insulating layer, a shielding layer is arranged on the outer wall of each triangular support frame, and a flame-retardant layer is fixedly adhered to the outer wall of each shielding layer;

the mechanical impact resisting assembly is arranged on the outer wall of the flame retardant layer and comprises an inner sheath, a fire insulation layer, an armor layer and an outer sheath.

Preferably, the three groups of insulating layers are in mutual contact to form a group of cavities, six groups of cavities are formed between the three groups of insulating layers and the triangular support frame, and the seven groups of cavities are filled with filling fibers.

Preferably, a placing cavity is arranged between the triangular support frame and the shielding layer, and three groups of fan-shaped filling blocks and filling fibers are filled in the placing cavity.

Preferably, the outer wall on fire-retardant layer is pasted fixedly with the inner wall of inner sheath, and the outer wall of inner sheath is pasted fixedly with the inner wall that separates the fire layer, and the outer wall that separates the fire layer is pasted fixedly with the inner wall of armor, and insulating layer, fire-retardant layer and the setting that separates the fire layer can avoid the condition that the cable appears being burnt when the conflagration takes place, cause the condition that the outage appears, can prevent the further burning of intensity of a fire to metallic conductor, reduce because of the condition emergence that metallic conductor is burnt and is increaseed the intensity of a fire.

Preferably, the inner wall of the outer sheath is fixedly connected with six groups of clamping blocks, trapezoidal grooves matched with the clamping blocks are formed in the armor layer, the clamping blocks are clamped and installed in the trapezoidal grooves, the outer sheath is clamped and installed with the armor layer, the inner sheath and the outer sheath are arranged to play a role of double protection, a seamless copper pipe is used as the sheath in a dangerous place, the cable can be better protected, the cable has the performance of resisting water, moisture, oil and chemical substances, the copper pipe has equivalent mechanical strength and better explosion-proof performance, and the cable is suitable for dangerous places such as chemical engineering or petroleum, and risks are greatly reduced.

Preferably, the metal conductor is copper core stranded conductor, and the insulating layer is the magnesium oxide insulating layer, and the triangular support frame is the glass fiber rope, and the inner sheath is seamless copper pipe inner sheath, and the armor is high strength galvanized steel wire armor, and the oversheath is high density polyethylene oversheath, and the setting of armor prevents that the cable from suffering the mechanical damage that probably meets at laying process or operation in-process to ensure the integrality of inner sheath, and can bear certain exogenic action.

Compared with the prior art, the utility model has the beneficial effects that:

(1) this three-core fire-resistant power cable of anti mechanical shock, through the triangular supports frame, fan-shaped packing block and fibrous cooperation of packing are used, can play the effect of protection to three metallic conductor of group, utilize triangular stability, make the structure of cable more stable, when meetting external force and assaulting or extrudeing, also can reduce the condition that metallic conductor appears warping to a certain extent, prolong its life, avoid receiving the damage and leading to the fact follow-up large-scale power failure because of the cable, cause the economic loss that can not wear out, the insulating layer, fire-retardant layer and the setting on separate fire layer, can be when the conflagration takes place, avoid the condition that the cable appears being burnt out, cause the condition of outage, can prevent the further burning of intensity of a fire to metallic conductor, the reduction is taken place because of the condition that metallic conductor is burnt and is increaseed the intensity of a fire.

(2) This three-core fire-resistant power cable of anti mechanical shock, the setting of inner sheath and oversheath, play dual protection's effect, use seamless copper pipe as the sheath in comparatively dangerous place, can be better protect the cable, it is waterproof to have, moisture, the performance that oil and some chemical infringement, the copper pipe has comparable mechanical strength so has better explosion-proof ability, be applicable to in this kind of comparatively dangerous place of chemical industry or oil, the risk has been reduced widely, the setting of armor, prevent that the cable from suffering the mechanical damage that probably meets at laying the in-process or the operation in-process, in order to ensure the integrality of inner sheath, and can bear certain exogenic action.

Drawings

The utility model is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of part A of the present invention.

Reference numerals: the cable comprises a metal conductor 1, an insulating layer 2, a triangular supporting frame 3, a sector filling block 4, a filling fiber 5, a shielding layer 6, a flame-retardant layer 7, an inner sheath 8, a fire-insulating layer 9, an armor layer 10, an outer sheath 11 and a clamping block 12.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, greater than, less than, exceeding, etc. are understood as excluding the present numbers, and the above, below, inside, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The first embodiment is as follows:

referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an anti mechanical shock three-core fire-resistant power cable, including metallic conductor 1 and anti mechanical shock subassembly, metallic conductor 1's quantity is three groups, the outer wall of three metallic conductor 1 of group all pastes and is fixed with insulating layer 2, the outer wall of insulating layer 2 is provided with triangular support frame 3, the inner wall of triangular support frame 3 contacts with the outer wall of insulating layer 2, the outer wall of triangular support frame 3 is provided with shielding layer 6, shielding layer 6's outer wall is pasted and is fixed with fire-retardant layer 7, anti mechanical shock subassembly sets up in fire-retardant layer 7's outer wall, anti mechanical shock subassembly is including inner sheath 8, fire-proof layer 9, armor 10 and oversheath 11.

Furthermore, three groups of insulating layers 2 are contacted with each other to form a group of cavities, six groups of cavities are also formed between the three groups of insulating layers 2 and the triangular support frame 3, and the seven groups of cavities are filled with filling fibers 5.

Further, be provided with between triangular support frame 3 and the shielding layer 6 and place the chamber, it has three fan-shaped filling blocks of group 4 and filling fiber 5 to place the intracavity packing, through triangular support frame 3, fan-shaped filling block 4 and filling fiber 5's cooperation is used, can play the effect of protection to three metallic conductor 1 of group, utilize triangular stability, make the structure of cable more stable, when meetting external force and assaulting or extrudeing, also can reduce the condition that metallic conductor 1 appears warping to a certain extent, prolong its life, avoid receiving the damage and leading to the fact follow-up large-scale power failure because of the cable, cause the economic loss that can not wear out.

Example two:

referring to fig. 1-2, on the basis of the first embodiment, the outer wall of the flame retardant layer 7 is fixedly adhered to the inner wall of the inner sheath 8, the outer wall of the inner sheath 8 is fixedly adhered to the inner wall of the flame barrier layer 9, the outer wall of the flame barrier layer 9 is fixedly adhered to the inner wall of the armor layer 10, and the insulating layer 2, the flame retardant layer 7 and the flame barrier layer 9 are arranged, so that when a fire disaster occurs, the situation that a cable is blown off to cause a power failure can be avoided, further combustion of the metal conductor 1 by the fire can be prevented, and the situation that the fire is increased due to the fact that the metal conductor 1 is combusted can be reduced.

Further, the inner wall fixedly connected with of oversheath 11 has six groups of fixture blocks 12, set up on the armor 10 with fixture block 12 assorted dovetail groove, fixture block 12 joint is installed in the dovetail groove, oversheath 11 and the installation of armor 10 joint, the setting of inner sheath 8 and oversheath 11 plays dual protection's effect, use seamless copper pipe as the sheath in comparatively dangerous place, can be better protect the cable, have waterproof, moisture, the performance that oil and some chemical substance infringed, the copper pipe has comparable mechanical strength so has better explosion-proof performance, be applicable to in chemical industry or this kind of comparatively dangerous place of oil, the risk has been reduced widely.

Further, metal conductor 1 is copper core stranded conductor, insulating layer 2 is the magnesium oxide insulating layer, triangular support frame 3 is the glass fiber rope, inner sheath 8 is the seamless copper pipe inner sheath, armor 10 is high strength galvanized steel wire armor, the setting of armor 10, prevent that the cable from suffering the mechanical damage that probably meets at laying the in-process or operation in-process, in order to ensure inner sheath 8's integrality, and can bear certain exogenic action, oversheath 11 is high density polyethylene oversheath, high density polyethylene has excellent comprehensive properties, the heat resistance is good with mechanical strength height, have certain separation effect to steam and gas.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. An anti-mechanical impact three-core fire-resistant power cable comprises a metal conductor (1) and an anti-mechanical impact component, and is characterized in that: the number of the metal conductors (1) is three, the outer walls of the three groups of metal conductors (1) are fixedly adhered with insulating layers (2), triangular supporting frames (3) are arranged on the outer walls of the insulating layers (2), the inner walls of the triangular supporting frames (3) are in contact with the outer walls of the insulating layers (2), shielding layers (6) are arranged on the outer walls of the triangular supporting frames (3), and flame-retardant layers (7) are fixedly adhered to the outer walls of the shielding layers (6);

the mechanical impact resistant assembly is arranged on the outer wall of the flame retardant layer (7) and comprises an inner sheath (8), a fire insulation layer (9), an armor layer (10) and an outer sheath (11).

2. The mechanical impact resistant three-core fire resistant power cable of claim 1, wherein: the three groups of insulating layers (2) are mutually contacted to form a group of cavities, six groups of cavities are also formed between the three groups of insulating layers (2) and the triangular support frame (3), and the seven groups of cavities are filled with filling fibers (5).

3. The mechanical impact resistant three-core fire resistant power cable of claim 1, wherein: a placing cavity is arranged between the triangular supporting frame (3) and the shielding layer (6), and three groups of fan-shaped filling blocks (4) and filling fibers (5) are filled in the placing cavity.

4. The mechanical impact resistant three-core fire resistant power cable of claim 1, wherein: the outer wall of the flame-retardant layer (7) is fixedly adhered to the inner wall of the inner sheath (8), the outer wall of the inner sheath (8) is fixedly adhered to the inner wall of the fire-insulating layer (9), and the outer wall of the fire-insulating layer (9) is fixedly adhered to the inner wall of the armor layer (10).

5. The mechanical impact resistant three-core fire resistant power cable of claim 1, wherein: the inner wall of the outer sheath (11) is fixedly connected with six groups of clamping blocks (12), trapezoidal grooves matched with the clamping blocks (12) are formed in the armor layer (10), the clamping blocks (12) are clamped and installed in the trapezoidal grooves, and the outer sheath (11) and the armor layer (10) are clamped and installed.

6. The mechanical impact resistant three-core fire resistant power cable of claim 1, wherein: the metal conductor (1) is a copper core stranded conductor, the insulating layer (2) is a magnesium oxide insulating layer, the triangular support frame (3) is a glass fiber rope, the inner sheath (8) is a seamless copper pipe inner sheath, the armor layer (10) is a high-strength galvanized steel wire armor layer, and the outer sheath (11) is a high-density polyethylene outer sheath.