CN213093778U

CN213093778U - Pressure-resistant composite structure low-smoke zero-halogen threading pipe

Info

Publication number: CN213093778U
Application number: CN202021507759.6U
Authority: CN
Inventors: 张军; 潘准; 曾庆兵; 李光德; 林波; 旷治文; 梅彬; 邓民; 李帅; 殷勇
Original assignee: CHENGDU YINGMEN CABLE CO LTD
Current assignee: CHENGDU YINGMEN CABLE CO LTD
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-30
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a withstand voltage composite construction low smoke and zero halogen threading pipe, include: first PVC layer, metal level and second PVC layer, the joint can be dismantled to first PVC layer and metal level, the joint can be dismantled with the second PVC layer in the metal level, the space has between metal level and the second PVC layer, first PVC layer and second PVC layer are low cigarette, it is halogen-free, the polyolefin material that has fire retardant property, this fire-retardant threading pipe is through the composite construction who adds the metal level in the middle of two PVC layers, reinforcing threading pipe compressive capacity, electromagnetic shield ability and fire behaviour, play good guard action to its inside wire and cable.

Description

Pressure-resistant composite structure low-smoke zero-halogen threading pipe

Technical Field

The utility model relates to a threading pipe technical field, concretely relates to withstand voltage composite construction low smoke and zero halogen threading pipe.

Background

In the circuit that involves the electric wire, the threading pipe can play the effect of protection to electric wire and cable, and the threading pipe is spread throughout each occasion such as home decoration and mill power supply, and the electrical installation threading pipe for the electric wire on the market all is the stereoplasm PVC rubber tube mostly, and stereoplasm PVC threading pipe is because of the low price, and it is simple to make, and the long-term important position that occupies among the building threading pipe material, but PVC belongs to easily fires the material, and the threading pipe on the market can only play simple protection cable's effect. Once a fire occurs, the threading pipe is easily burnt in a short time and damages wires and cables inside, thereby causing power failure. Causing more serious fire and casualties. The PVC threading pipe is easy to drip and delay burning in the burning process to cause fire spreading, and because the PVC contains more halogen elements, when the threading pipe is ignited and burnt, a large amount of toxic smoke and dense smoke are easy to generate, thereby causing secondary damage to people in a disaster and preventing the people in the disaster from escaping. And the electromagnetic wave interference generated in places with more electric appliances is more and more serious.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a withstand voltage composite construction low smoke and zero halogen threading pipe, this threading pipe have withstand voltage, shielding electromagnetic interference, advantages such as fire-retardant.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a withstand voltage composite construction low smoke and zero halogen threading pipe includes: first PVC layer, metal level and second PVC layer, inseparable joint can be dismantled to first PVC layer and metal level, and the joint can be dismantled with the second PVC layer to the metal level, has the space between metal level and the second PVC layer.

The metal level sets up between first PVC layer and second PVC layer, because of the metal has higher compressive strength and incombustible characteristics for PVC relatively, so the metal level plays fine guard action to the interior electric wire and cable of threading pipe. All adopt detachable joint structure between first PVC layer and metal level and the second PVC layer, be convenient for change any one deck structure as required, and only need one deck joint during the installation, convenient and fast. The outer wall of the metal layer is in close contact with the inner wall of the first PVC layer, so that the metal layer can better support the first PVC layer, and the compressive strength of the first PVC layer is enhanced; a certain gap is reserved between the inner wall of the metal layer and the outer wall of the second PVC layer, so that heat transfer from the metal layer to the second PVC layer is reduced. The first PVC layer and the second PVC layer adopt low smoke and zero halogen, the polyolefin material with flame retardant property further reduces the burning speed, and toxic smoke generated during burning is less.

Further, in a preferred embodiment of the present invention, the first PVC layer has a plurality of first grooves formed in an inner wall thereof.

Further, in the preferred embodiment of the present invention, the outer wall of the metal layer is provided with a plurality of first protrusions corresponding to the first grooves, and the inner wall is provided with a plurality of second grooves.

Further, in the preferred embodiment of the present invention, the second PVC layer outer wall is provided with a plurality of second protrusions corresponding to the second grooves.

Through recess and protruding one-to-one, realize that first PVC layer, metal level and second PVC layer can dismantle the joint in proper order.

Further, in the preferred embodiment of the present invention, the first PVC layer and the second PVC layer are low-smoke, halogen-free, flame-retardant polyolefin materials.

The polyolefin material with low smoke, no halogen and flame retardant property can enhance the flame retardant capability of the threading pipe.

Further, in a preferred embodiment of the present invention, the metal layer is made of copper or aluminum or stainless steel.

The metal layer has good compression resistance and electromagnetic shielding effect.

The utility model discloses following beneficial effect has:

this withstand voltage composite construction low smoke and zero halogen threading pipe adopts first PVC layer, the three-layer composite structure on metal level and second PVC layer, through the inseparable joint of first PVC layer and middle metal level, the compressive strength on first PVC layer has been strengthened, when the conflagration breaing out, even first PVC layer burning, the metal level also can play fine guard action to inside second PVC layer and wire and cable, adopt the structure that leaves the space between middle metal level and the second PVC layer, be air or fill thermal insulation material in the space, air and thermal insulation material compare with the metal, all have lower heat-transfer ability, thereby make the metal level reduce second PVC layer heat transfer, reduce the destruction to second PVC layer, play good guard action to wire and cable in it, in addition, the metal level can also play good electromagnetic shielding effect. The first PVC layer and the second PVC layer are both made of low-smoke halogen-free polyolefin materials with flame retardant property, and the materials can only generate less smoke and less toxic smoke when being burnt, prevent the fire from spreading and provide a safe escape channel with sufficient time for disaster-stricken personnel.

Drawings

FIG. 1 is a schematic structural view of the low smoke zero halogen threading pipe with pressure-resistant composite structure of the present invention;

fig. 2 is a schematic structural view of a first PVC layer of the present invention;

fig. 3 is a schematic structural diagram of a metal layer according to the present invention;

fig. 4 is a schematic structural diagram of a second PVC layer according to the present invention.

Wherein: 1-a first PVC layer; 11-a first groove; 2-a metal layer; 21-a first protrusion; 22-a second groove; 3-a second PVC layer; 31-a second protrusion; 00-voids.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-4, a low smoke zero halogen threading pipe with pressure-resistant composite structure comprises: first PVC layer 1, metal level 2 and second PVC layer 3, inseparable joint can be dismantled to first PVC layer 1 and metal level 2, and joint can be dismantled with second PVC layer 3 to metal level 2, has space 00 between metal level 2 and the second PVC layer 3.

A plurality of first grooves 11 are formed in the inner wall of the first PVC layer 1.

The outer wall of the metal layer 2 is provided with a plurality of first protrusions 21 corresponding to the first grooves 11, and the inner wall is provided with a plurality of second grooves 22.

The outer wall of the second PVC layer 3 is provided with a plurality of second protrusions 31 corresponding to the second grooves 22.

The first PVC layer 1 and the second PVC layer 3 are low-smoke halogen-free polyolefin materials with flame retardant property.

The metal layer 2 is made of copper or aluminum or stainless steel.

The first PVC layer 1 and the metal layer 2 as well as the metal layer 2 and the second PVC layer 3 are all in detachable clamping structure, only one layer of clamping is needed during installation, the convenience and the rapidness are realized, and any layer of structure is convenient to replace as required,

the first PVC layer 1 and the metal layer 2 are in close contact, and when larger pressure is applied to the first PVC layer 1, the metal layer 2 can play a good supporting role for the first PVC layer 1, so that the strength of the first PVC layer 1 is enhanced.

When the conflagration breaing out, first PVC layer 1 receives destruction burning at first, but this layer PVC material only can produce less smog and few poison cigarette when the burning, and fire-retardant intensity of a fire spreads, thereby first PVC layer 1 destruction degree has been slowed down, even first PVC layer 1 destroys completely, because the existence of metal level 2, the metal ignition is higher, the incombustible, thereby its inside second PVC layer 3 and wire and cable of protection, again because there is space 00 between metal level and the second PVC layer 3, be air or packing insulation material in this space 00, thereby reduce metal level 2 and transfer heat to second PVC layer 3, further the reinforcing is to second PVC layer and its wire and cable's guard action.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a withstand voltage composite construction low smoke and zero halogen threading pipe which characterized in that includes: first PVC layer (1), metal level (2) and second PVC layer (3), first PVC layer (1) with inseparable joint can be dismantled in metal level (2), metal level (2) with joint can be dismantled in second PVC layer (3), metal level (2) with space (00) have between second PVC layer (3).

2. The pressure-resistant composite structure low-smoke zero-halogen threading pipe as claimed in claim 1, characterized in that a plurality of first grooves (11) are formed on the inner wall of the first PVC layer (1).

3. The pressure-resistant composite structure low smoke zero halogen threading pipe according to claim 2, characterized in that the outer wall of the metal layer (2) is provided with a plurality of first protrusions (21) corresponding to the first grooves (11), and the inner wall is provided with a plurality of second grooves (22).

4. The pressure-resistant composite structure low smoke zero halogen threading pipe according to claim 3, characterized in that the outer wall of the second PVC layer (3) is provided with a plurality of second protrusions (31) corresponding to the second grooves (22).

5. The pressure-resistant composite structure low-smoke zero-halogen threading pipe as claimed in claim 1, characterized in that the first PVC layer (1) and the second PVC layer (3) are low-smoke, halogen-free and flame-retardant polyolefin materials.

6. The pressure-resistant composite structure low smoke zero halogen threading pipe of claim 1, characterized in that the metal layer is made of copper or aluminum or stainless steel.