CN218911127U

CN218911127U - Fireproof heat-insulation inhaul cable

Info

Publication number: CN218911127U
Application number: CN202221871547.5U
Authority: CN
Inventors: 叶明坤; 姜同辉; 彭英焕; 周玉华; 韦谋超; 仲智涛; 邓彩萍
Original assignee: Liuzhou Qiaoxia Technology Development Co ltd; Liuzhou Qiaoxia Cable Product Co ltd
Current assignee: Liuzhou Qiaoxia Technology Development Co ltd; Liuzhou Qiaoxia Cable Product Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-04-25
Anticipated expiration: 2032-07-20

Abstract

The utility model provides a fire prevention thermal insulation cable, includes cable body (1), its characterized in that: the cable body (1) is characterized in that the outer surface of the cable body (1) is provided with a fiber layer (2), the outer surface of the fiber layer (2) is provided with a fireproof layer, the outer surface of the fireproof layer is provided with a metal heat insulation structure (4), and the metal heat insulation structure (4) is provided with a nanometer fireproof heat insulation coating (5).

Description

Fireproof heat-insulation inhaul cable

Technical Field

The utility model relates to a inhaul cable, in particular to a fireproof heat-insulation inhaul cable, and belongs to the technical field of bridge engineering.

Background

The inhaul cable is widely applied to large-span bridges of various rivers, lakes and seas, is an important stressed member of the large-span bridges, and is mainly stressed members of suspension bridges, stay cables or other structural bridges, and the cable is generally composed of steel wires, jackets and the like. The causes of bridge fire accidents are various, such as: the lamp decoration on the bridge fires, and the automobile running on the bridge fires or explodes to fire. The temperature of general fire reaches more than 800 ℃, and in case of fire, the existing structure of the cable can be directly burnt, even if the existing structure is not directly burnt, the mechanical property and stress of the cable can be adversely affected after the cable passes through the high temperature of the fire, and the overall safety of the bridge is seriously affected.

The existing bridge inhaul cable is simple in structure and does not have good fireproof and heat-insulating performance, for example: the Chinese patent publication number is: the utility model patent of CN109457612A discloses a flame-retardant inhaul cable, and particularly, the surface of the inhaul cable is respectively coated with a heat insulation layer and flame-retardant rubber, so that the flame-retardant performance of the inhaul cable is improved. The structure has single fireproof measure and limited fireproof heat insulation capacity, and cannot meet the fireproof heat insulation requirement. A fireproof heat-insulating inhaul cable with a reasonable structure is not available for solving the technical problem.

Disclosure of Invention

Aiming at the defects and shortcomings of the existing inhaul cable that the structure is simple, the fireproof measures are single, the effective fireproof and heat insulation effects cannot be achieved once a fire disaster occurs, and hidden danger is caused to the safety of a bridge, the utility model provides the fireproof heat insulation inhaul cable which is reasonable in structure, has a multilayer protection structure, can achieve good heat insulation effects, has good fireproof performance, and improves the use safety.

In order to achieve the purpose of the utility model, the technical solution of the utility model is as follows: the fireproof heat-insulating inhaul cable comprises a cable body, wherein a fiber layer is arranged on the outer surface of the cable body, a fireproof layer is arranged on the outer surface of the fiber layer, a metal heat-insulating structure is arranged on the outer surface of the fireproof layer, and a nano fireproof heat-insulating coating is arranged on the metal heat-insulating structure.

Further, the fiber layer is made of aramid fiber or other fibers, and the aramid fiber is wrapped in a spiral wrapping or flat wrapping mode.

Further, the fireproof layer is an asbestos layer, and the asbestos layer is made of one or more of strip-shaped asbestos, cloth-shaped asbestos, sheet-shaped asbestos and strip-shaped asbestos.

Further, the asbestos layer material adopts one or two materials selected from mica cotton, mineral cotton, glass fiber, ceramic cotton and high-alumina refractory material.

Further, the metal heat insulation structure comprises an outer ring steel pipe, an inner ring steel pipe and a steel pipe asbestos layer, and the steel pipe asbestos layer is filled between the outer ring steel pipe and the inner ring steel pipe.

Furthermore, the outer side and the inner side surfaces of the outer ring steel pipe and/or the inner ring steel pipe are provided with nano fireproof heat-insulating coatings.

The beneficial effects of the utility model are as follows:

1. the utility model adopts the fiber layer, the fireproof layer and the metal heat insulation structure to carry out multilayer protection on the inhaul cable, the fireproof layer is made of asbestos materials, the effective protection on the inner layer of the inhaul cable is realized, and meanwhile, the metal heat insulation structure is adopted to effectively protect the inhaul cable from the periphery.

2. The utility model has reasonable structure, can achieve good heat insulation effect, has good fireproof performance, greatly improves the fireproof heat insulation grade of the inhaul cable, can ensure the safe use of the inhaul cable even if a fire disaster occurs, and does not influence the integral safety of the bridge.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic illustration of a metallic thermal insulation structure coated with a nano-fire resistant thermal insulation coating of the present utility model.

Fig. 3 is a schematic structural view of a first embodiment of the metal insulation structure of the present utility model.

Fig. 4 is a schematic structural view of a first embodiment of the metal insulation structure of the present utility model.

FIG. 5 is a schematic view of the structure of a fiber layer or an asbestos layer in the form of foam according to the present utility model.

Fig. 6 is a schematic structural view of a fiber layer or an asbestos layer in the form of a crease according to the present utility model.

Fig. 7 is a schematic view of the structure of the corrugated form fiber layer or asbestos layer of the present utility model.

FIG. 8 is a schematic structural view of the fibrous or asbestos layer of the present utility model coated with a nano-fire-resistant thermal barrier coating.

In the figure: the cable comprises a cable body 1, a fiber layer 2, an asbestos layer 3, a metal heat insulation structure 4, a nano fireproof heat insulation coating 5, an outer ring steel pipe 6, an inner ring steel pipe 7 and a steel pipe asbestos layer 8.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 8, the fireproof heat-insulating inhaul cable of the present utility model comprises a cable body 1, and is characterized in that: the outer surface of the rope body 1 is provided with a fiber layer 2, the outer surface of the fiber layer 2 is provided with a fireproof layer, the outer surface of the fireproof layer is provided with a metal heat insulation structure 4, and the metal heat insulation structure 4 is provided with a nanometer fireproof heat insulation coating 5.

The fiber layer 2 is made of aramid fiber or other fibers, and the aramid fiber is wrapped in a spiral wrapping or flat wrapping manner.

The fireproof layer is made of one or more of strip-shaped asbestos, cloth-shaped asbestos, sheet-shaped asbestos and strip-shaped asbestos.

The asbestos layer material adopts one or two materials selected from mica cotton, mineral cotton, glass fiber, ceramic cotton and high aluminum refractory material.

The metal heat insulation structure 4 comprises an outer ring steel pipe 6, an inner ring steel pipe 7 and a steel pipe asbestos layer 8, wherein the steel pipe asbestos layer 8 is filled between the outer ring steel pipe 6 and the inner ring steel pipe 7.

The outer side and the inner side surfaces of the outer ring steel pipe 6 and/or the inner ring steel pipe 7 are provided with a nanometer fireproof heat-insulating coating 5.

Referring to the drawing, a fiber layer 2 is arranged on the outer surface of a rope body 1, the fiber layer 2 is made of other fiber materials such as aramid fibers, the fiber layer 2 is wrapped on the outer surface of the rope body 1 in a spiral wrapping or flat wrapping mode, the fiber layer 2 can be fixed on the outer surface of the rope body 1 in a sticking and fixing mode, and preliminary protection on the surface of the rope body 1 is achieved through the fiber layer 2.

The outer surface of the fiber layer 2 is provided with a fireproof layer, the fireproof layer adopts an asbestos layer or other fireproof materials, and the fireproof layer adopts one or two of mica cotton, mineral cotton, glass fiber, ceramic cotton and high-alumina fireproof materials. The asbestos layer is made of one or more of strip-shaped asbestos, cloth-shaped asbestos, sheet-shaped asbestos and strip-shaped asbestos. The asbestos layer has a thickness of 0.01-1000 mm and is in the shape of one or more of hollow, square, crease, ripple, porous, foaming and other shape structures.

The outer surface of the fireproof layer is provided with a metal heat insulation structure 4, the metal heat insulation structure 4 can adopt a heat insulation structure taking a steel pipe as a main body, and various embodiments can be adopted, and specific examples are as follows:

example 1: the metal heat insulation structure 4 comprises an outer ring steel pipe 6, an inner ring steel pipe 7 and a steel pipe asbestos layer 8, wherein the outer ring steel pipe 6 is positioned on the outer ring, and the inner ring steel pipe 7 is positioned on the inner ring and is coaxial with the inner ring steel pipe 7 and the outer ring steel pipe 6. A certain gap is arranged between the outer ring steel pipe 6 and the inner ring steel pipe 7, a steel pipe asbestos layer 8 is filled in the gap, and the steel pipe asbestos layer 8 has the same structural form as the asbestos layer.

Example 2: the metal heat insulation structure 4 includes an outer ring steel pipe 6, an inner ring steel pipe 7, a steel pipe asbestos layer 8, and a nano fireproof heat insulation coating 5, and on the basis of embodiment 1, the nano fireproof heat insulation coating 5 is provided on the outer side surface of the outer ring steel pipe 6 and/or the inner ring steel pipe 7, or the nano fireproof heat insulation coating 5 is provided on the inner side surface of the outer ring steel pipe 6 and/or the inner ring steel pipe 7, or the nano fireproof heat insulation coating 5 is provided on both the inner side surface and the outer side surface.

The nano fireproof heat-insulating coating 5 belongs to the prior art, can be used as nano inorganic composite ceramic coating in the application, and has the excellent performances of high temperature resistance and fire resistance. The reflectivity of the coating to heat radiation is more than 80%, and the thermal conductivity is less than 0.03 w/M.k. Thus, the fire-proof heat-insulating effect is good even if the thickness is only 0.1 mm. According to the utility model, various fireproof measures can be combined and arranged according to the grade degree of fireproof heat insulation, so that a good fireproof heat insulation effect is achieved.

The foregoing is a further detailed description of the present utility model in connection with the specific embodiments, and it is not intended to limit the practice of the utility model to such descriptions, but rather it is intended to cover all such alternatives, modifications, and variations as may be included within the spirit and scope of the utility model.

Claims

1. The utility model provides a fire prevention thermal insulation cable, includes cable body (1), its characterized in that: the cable is characterized in that a fiber layer (2) is arranged on the outer surface of the cable body (1), a fireproof layer is arranged on the outer surface of the fiber layer (2), a metal heat insulation structure (4) is arranged on the outer surface of the fireproof layer, and a nanometer fireproof heat insulation coating (5) is arranged on the metal heat insulation structure (4).

2. A fire protection and insulation cable according to claim 1, wherein: the fiber layer (2) is made of aramid fibers, and the aramid fibers are wrapped in a spiral wrapping or flat wrapping manner.

3. A fire protection and insulation cable according to claim 1, wherein: the fireproof layer is made of asbestos materials.

4. A fire protection and insulation cable according to claim 3, wherein: the fireproof layer is made of mica cotton, mineral cotton, glass fiber, ceramic cotton or high-alumina fireproof materials.

5. A fire protection and insulation cable according to claim 1, wherein: the metal heat insulation structure (4) comprises an outer ring steel pipe (6), an inner ring steel pipe (7) and a steel pipe asbestos layer (8), wherein the steel pipe asbestos layer (8) is filled between the outer ring steel pipe (6) and the inner ring steel pipe (7).

6. A fire protection and insulation cable according to claim 5, wherein: the outer side and the inner side of the outer ring steel pipe (6) and/or the inner ring steel pipe (7) are/is provided with a nano fireproof heat-insulating coating (5).