Corrugated copper pipe outer sheath fireproof cable

Abstract

The utility model relates to the technical field of cables, and particularly discloses a fireproof cable with a corrugated copper pipe outer sheath, which comprises a wire core, an insulating layer used for wrapping the wire core and a protective layer arranged outside the insulating layer, an adhesive layer is arranged outside the protective layer, flame-retardant fireproof plaster is wrapped outside the adhesive layer, and when the flame-retardant fireproof plaster is not solidified, the flame-retardant fireproof plaster is wrapped outside the adhesive layer. The flame-retardant fireproof plaster is uniformly covered with an elastic assembly, the elastic assembly is composed of a plurality of elastic balls and elastic rods arranged among the elastic balls, the elastic rods are wrapped with high-temperature-resistant glass wool cloth belts, and the height of the wrapped high-temperature-resistant glass wool cloth belts is larger than that of the elastic balls. A corrugated copper pipe is rolled on the periphery of the high-temperature-resistant glass wool cloth belt, and a sheath is sleeved on the periphery of the corrugated copper pipe.

Description

Technical Field

[0001] The present application relates to the technical field of cables, and specifically discloses a fireproof cable with a corrugated copper tube outer sheath. Background Art

[0002] Fireproof cables have special fireproof properties. When a fire occurs, they will not burn, spread or expand the fire, and they are required to be able to deliver electricity normally within a certain period of time, giving enough time to save people's lives and property. The traditional fireproof cable structure is a copper tube insulated with magnesium oxide mineral powder as a sheath. Although it can play a fireproof role, it has many disadvantages such as short manufacturing length, difficult joints, and especially high copper tube costs. Recently, people have developed corrugated copper tube sheaths to solve the problem of limited manufacturing length;

[0003] The reason why we choose corrugated copper tube sheath is that it is not afraid of acid and alkali corrosion, it is not corroded itself, and can effectively protect the wires and cables, oil pipes, etc. in the pipe from corrosion. The corrugated tube can provide a barrier protection for wires and cables that is far superior to metal corrugated tubes, and can prevent harmful substances from penetrating the pipeline and polluting, thereby ensuring that the post-tensioned prestressed structure has better durability;

[0004] However, the combination of the cable and the corrugated copper tube sheath is extrusion, which causes certain problems:

[0005] During the corrugation process, the corrugated copper tube has hard contact with the inner cushion material, which can easily damage the internal insulating material. In view of this, the inventor proposes a corrugated copper tube outer sheath fireproof cable. Utility Model Content

[0006] The utility model aims to solve the problem that during the rolling process of the traditional corrugated copper tube, the main body of the wire core is squeezed and damaged.

[0007] In order to achieve the above purpose, the utility model provides the following basic solutions

[0008] A corrugated copper tube outer sheath fireproof cable, comprising a wire core, an insulating layer for wrapping the wire core and a protective layer arranged outside the insulating layer, characterized in that: a viscose layer is included on the outside of the protective layer, and the outside of the viscose layer is wrapped with flame-retardant fireproof putty, and when the flame-retardant fireproof putty is not solidified, an elastic component is evenly covered on the flame-retardant fireproof putty, and the elastic component is composed of a plurality of elastic balls and elastic rods arranged between the elastic balls, and a high-temperature resistant glass cloth tape is wrapped on the elastic rod, and the height of the high-temperature resistant glass cloth tape after wrapping is greater than the height of the elastic ball, a corrugated copper tube is rolled on the periphery of the high-temperature resistant glass cloth tape, and a sheath is sleeved on the periphery of the corrugated copper tube.

[0009] The principles and effects of this basic solution are:

[0010] 1. Compared with the prior art, the device has a simple structure and an ingenious design. The core point of the cable is that it is arranged on an adhesive layer, and the flame retardant and fireproof putty is installed by using the adhesive layer. When the flame retardant and fireproof putty is not solidified, the elastic component is installed. The elastic component is composed of a plurality of elastic balls and elastic rods arranged between the elastic balls. The elastic rods are used to wrap a high-temperature resistant glass cloth tape, thereby realizing the fire protection of the cable.

[0011] 2. Compared with the prior art, the core point of this cable is that under the action of the elastic ball and the elastic rod, and the rolling action of the external corrugated copper tube, this force will act on the elastic ball and the elastic rod, and the elastic ball and the elastic rod will share the rolling force, so that the entire rolling force does not act on the wire core and related supporting components of the wire core. This solves the problem of squeezing the main body of the wire core and causing damage to the main body of the wire core during the rolling process of the traditional corrugated copper tube.

[0012] 3. Compared with the prior art, there are no technical problems in the installation and production of this cable.

[0013] Furthermore, the line core is any one of a single core, a double core or a triple core.

[0014] Furthermore, the insulating layer is made of halogen-free, low-smoke, flame-retardant polyolefin material.

[0015] Furthermore, the protective layer includes a polyvinyl chloride sheath layer, a wear-resistant coating layer and a puncture-proof layer, and the adhesive layer is evenly applied on the puncture-proof layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A cross-sectional schematic diagram of a corrugated copper tube outer sheath fireproof cable proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0019] The reference numerals in the drawings of the specification include: sheath 1, corrugated copper tube 2, high temperature resistant glass fiber cloth tape 3, flame retardant fireproof putty 4, elastic ball 5, elastic ball 6, protective layer 7, insulating layer 8, and wire core 9.

[0020] Implementation example Figure 1 As shown:

[0021] A corrugated copper tube outer sheathed fireproof cable, comprising a wire core 9, an insulating layer 8 for wrapping the wire core 9 and a protective layer 7 arranged outside the insulating layer 8, specifically: the wire core 9 is any one of a single core, a double core or a triple core, the insulating layer 8 is a halogen-free low-smoke flame-retardant polyolefin material, the protective layer 7 comprises a polyvinyl chloride sheath 1 layer, a wear-resistant coating layer and an anti-puncture layer, and the adhesive layer is evenly applied on the anti-puncture layer.

[0022] The protective layer 7 includes an adhesive layer on the outside, and the flame retardant and fireproof putty 4 is wrapped on the outside of the adhesive layer. Specifically, the purpose of setting the adhesive layer is to efficiently install the flame retardant and fireproof putty 4 and prevent the flame retardant and fireproof putty 4 from falling off.

[0023] When the flame retardant and fireproofing putty 4 is not solidified, the flame retardant and fireproofing putty 4 is evenly covered with an elastic component, which is composed of a plurality of elastic balls 5 and elastic rods arranged between the elastic balls 5;

[0024] Regarding the elastic ball 5 and the elastic rod: if the cable is very short, the elastic ball 5 can be set at both ends, and then the elastic rod is connected between the elastic balls 5 at both ends. If the cable is very long, the elastic ball 5 can be set in sections. Similarly, the elastic rod is connected between the corresponding elastic balls 5 at both ends.

[0025] When the flame retardant and fireproofing putty 4 solidifies, the elastic component is naturally fixed.

[0026] A high temperature resistant glass cloth tape 3 is wrapped on the elastic rod, and the height of the wrapped high temperature resistant glass cloth tape 3 is greater than the height of the elastic ball 5. A corrugated copper tube 2 is rolled on the outer periphery of the high temperature resistant glass cloth tape 3, and a sheath 1 is sheathed on the outer periphery of the corrugated copper tube 2.

[0027] Specifically: the high temperature resistant glass cloth tape 3 is firstly for fireproofing and high temperature resistance, and secondly, due to the installation of elastic balls 5 and elastic rods, the shape of the entire cable is closer to a circle when wrapped with the high temperature resistant glass cloth tape 3, which is conducive to the subsequent installation of the corrugated copper tube 2.

[0028] Specific production process:

[0029] The wire core 9, the insulating layer 8 for wrapping the wire core 9 and the protective layer 7 arranged outside the insulating layer 8 are prepared, and then the adhesive layer is evenly applied on the outside of the protective layer 7, and the flame retardant fireproof putty 4 is evenly wrapped on the adhesive layer. When the flame retardant fireproof putty 4 has not solidified, the elastic rod and the elastic ball 5 are manually installed, and the flame retardant fireproof putty 4 is waited for to solidify. When the flame retardant fireproof putty 4 is completely solidified, the high temperature resistant glass fiber cloth tape 3 is wrapped on the elastic rod, and the corrugated copper tube 2 is rolled by a rolling machine. Specifically: the copper plate is longitudinally wrapped into a circle, after argon arc welding, it is continuously rolled into a corrugated shape. When the corrugated copper tube 2 is installed, the sheath 1 can be installed by extrusion.

[0030] Regarding the fire protection of this cable: the first is the corrugated copper tube 2, which can achieve high-temperature fire protection, and the second is the high-temperature resistant glass cloth tape 3, which can achieve high-temperature fire protection.

[0031] The device solves the problem that during the rolling process of the traditional corrugated copper tube 2, the main body of the wire core 9 is squeezed, resulting in damage to the main body of the wire core 9.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A corrugated copper tube outer sheath fireproof cable, comprising a wire core, an insulating layer for wrapping the wire core, and a protective layer arranged outside the insulating layer, characterized in that: The protective layer includes an adhesive layer on the outside, and the adhesive layer is wrapped with flame-retardant fireproof putty on the outside. When the flame-retardant fireproof putty is not solidified, the flame-retardant fireproof putty is evenly covered with an elastic component, and the elastic component is composed of a plurality of elastic balls and elastic rods arranged between the elastic balls. A high-temperature resistant glass cloth tape is wrapped on the elastic rod, and the height of the high-temperature resistant glass cloth tape after wrapping is greater than the height of the elastic ball. A corrugated copper tube is rolled on the periphery of the high-temperature resistant glass cloth tape, and a sheath is covered on the periphery of the corrugated copper tube.

2. A corrugated copper tube outer sheath fireproof cable according to claim 1, characterized in that: The wire core is any one of a single core, a double core or a triple core.

3. A corrugated copper tube outer sheath fireproof cable according to claim 1, characterized in that: The insulating layer is made of halogen-free, low-smoke, flame-retardant polyolefin material.

4. A corrugated copper tube outer sheath fireproof cable according to claim 1, characterized in that: The protective layer comprises a polyvinyl chloride sheath layer, a wear-resistant coating layer and a puncture-proof layer, and the adhesive layer is evenly coated on the puncture-proof layer.

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