Hoisting B1-level fireproof cable for constructional engineering

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a hoisting B1-level fireproof cable for constructional engineering, which comprises a plurality of wire cores, an insulating layer is fixedly connected to the outer wall of each wire core, a first fireproof layer is fixedly connected to the outer wall of each insulating layer, a filling layer is fixedly connected to the outer wall of each first fireproof layer, and a second fireproof layer is fixedly connected to the outer wall of each filling layer. A plurality of mounting holes are formed in the filling layer, protective sleeves are fixedly connected to the inner walls of the mounting holes, load-bearing steel ropes are fixedly connected to the interiors of the protective sleeves, a shielding layer is fixedly connected to the outer wall of the filling layer, and a second fireproof layer is fixedly connected to the outer wall of the shielding layer. According to the utility model, through the design of the wire core, the effects that the compression coefficient of the conductor is effectively improved, the outer diameter of the conductor is reduced, the gaps among the wire cores are reduced, and the quality accident that the conductor is oxidized due to the fact that air and water enter the gaps of the conductor are reduced are achieved; through the design, the battery cell has good conductivity.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a B1-level fireproof cable for hoisting in construction engineering. Background Art

[0002] The widespread construction of high-rise buildings has put higher and higher requirements on the safety and installation performance of power cables in buildings. At the same time, GB 50016-2014 "Code for Fire Protection Design of Buildings" requires: public buildings in special places, underground or semi-underground public buildings in first- and second-level places, and other crowded places should choose wires and cables with combustion performance of B1 or above, smoke toxicity of t0, and burning drops / particles of d0. The existing cables for high-rise buildings have high requirements for environmental protection and fire protection of cables, but ordinary fireproof cables do not necessarily meet B1 environmental protection performance. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a B1-level fireproof cable for hoisting in construction engineering, which solves the problem that ordinary fireproof cables do not necessarily meet the B1-level environmental protection performance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a B1-level fireproof cable for hoisting in construction engineering, comprising a plurality of wire cores, the outer wall of the wire core is fixedly connected with an insulating layer, the outer wall of the insulating layer is fixedly connected with a first fireproof layer, the outer wall of the first fireproof layer is fixedly connected with a filling layer, a plurality of mounting holes are opened inside the filling layer, the inner wall of the mounting hole is fixedly connected with a protective cover, the interior of the protective cover is fixedly connected with a load-bearing steel rope, the outer wall of the filling layer is fixedly connected with a shielding layer, the outer wall of the shielding layer is fixedly connected with a second fireproof layer, the outer wall of the second fireproof layer is fixedly connected with an armor layer, the outer wall of the armor layer is fixedly connected with an outer sheath, and the outer wall of the outer sheath is fixedly connected with a wear-resistant layer.

[0005] As a preferred technical solution of the utility model, the wire core is formed by twisting a plurality of conductors, and the material of the insulating layer is irradiated cross-linked polyethylene, which is extruded outside the wire core by using extrusion technology.

[0006] As a preferred technical solution of the utility model, the material of the first fireproof layer is nano aerogel, and the material of the filling layer is magnesium oxide.

[0007] As a preferred technical solution of the utility model, the load-bearing steel rope is formed by twisting a plurality of thin steel wires with excellent tensile strength, and the material of the protective sheath is chlorinated polyvinyl chloride.

[0008] As a preferred technical solution of the utility model, the material of the shielding layer is nickel-iron alloy, and the armor layer is formed by welding and ribbed steel strips.

[0009] As a preferred technical solution of the utility model, the material of the second fireproof layer is cable fireproof coating, and the outer sheath adopts Class B polyolefin sheath material.

[0010] As a preferred technical solution of the utility model, the material of the wear-resistant layer is polyimide.

[0011] Compared with the prior art, the utility model provides a B1-level fireproof cable for hoisting in construction engineering, which has the following beneficial effects:

[0012] 1. This B1-level fireproof cable for hoisting in construction projects has the effect of effectively improving the conductor compression coefficient, reducing the outer diameter of the conductor, and reducing the gap between the cores through the design of the core, thereby reducing the quality accidents of conductor oxidation caused by the entry of air and moisture into the conductor gap. At the same time, the core is made of multiple copper conductors twisted together. Through this design, the core has good conductivity. The design of the insulating layer achieves the effects of good dielectric properties, high temperature resistance, and waterproofness. The design of the load-bearing steel rope achieves the effects of excellent tensile strength and bending characteristics. The design of the filler achieves its own high temperature resistance and is completely non-combustible, which can effectively improve the cable's high fire resistance, strong heat resistance, good pressure resistance, and chemical corrosion resistance. The design of the armor layer achieves the effect of making the cable have good bending performance and fire resistance. The design of the outer sheath achieves good mechanical properties. It also has excellent safety and environmental protection, does not spread fire, does not drip, will not cause secondary damage to the human body, and the smoke density transmittance can reach more than 80%.

[0013] 2. This B1-level fireproof cable for construction engineering hoisting has further enhanced flame retardancy through the design of the first fireproof layer and the second fireproof layer. The design of the wear-resistant layer prevents the cable from being damaged due to dragging during laying, thereby extending the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 3 This is a structural breakdown diagram of the utility model.

[0017] In the figure: 1. Wire core; 2. Insulation layer; 3. First fireproof layer; 4. Filling layer; 5. Installation hole; 6. Load-bearing steel rope; 7. Protective cover; 8. Shielding layer; 9. Second fireproof layer; 10. Armor layer; 11. Outer sheath; 12. Wear-resistant layer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1

[0020] See also Figure 1-3 In this embodiment: a B1 grade fireproof cable for hoisting in construction engineering comprises a plurality of cores 1, an insulating layer 2 is fixedly connected to the outer wall of the core 1, a first fireproof layer 3 is fixedly connected to the outer wall of the insulating layer 2, a filling layer 4 is fixedly connected to the outer wall of the first fireproof layer 3, a plurality of mounting holes 5 are opened inside the filling layer 4, a protective cover 7 is fixedly connected to the inner wall of the mounting hole 5, a load-bearing steel rope 6 is fixedly connected to the inner wall of the protective cover 7, a shielding layer 8 is fixedly connected to the outer wall of the shielding layer 8, a second fireproof layer 9 is fixedly connected to the outer wall of the second fireproof layer 9, an armor layer 10 is fixedly connected to the outer wall of the armor layer 10, an outer sheath 11 is fixedly connected to the outer wall of the outer sheath 11, and a wear-resistant layer 12 is fixedly connected to the outer wall of the outer sheath 11.

[0021] In this embodiment, the design of the core 1 effectively improves the conductor compression coefficient, reduces the outer diameter of the conductor, and reduces the gap between the cores 1, thereby reducing the quality accidents caused by air and moisture entering the conductor gap and causing conductor oxidation. At the same time, the core 1 is made of multiple copper conductors twisted together. This design makes the battery core have good conductivity. The design of the insulating layer 2 achieves the effects of good dielectric properties, high temperature resistance, and waterproofness. The design of the load-bearing steel rope 6 achieves the effects of excellent tensile strength and bending characteristics. The design of the filler achieves its own high temperature resistance and is completely non-combustible, which can effectively improve the high fire resistance, strong heat resistance, good pressure resistance, and chemical corrosion resistance of the cable. The design of the armor layer 10 achieves the effect of making the cable have good bending performance and fire resistance. The design of the outer sheath 11 achieves good mechanical properties; it also has excellent safety and environmental protection, does not spread fire, does not drip, will not cause secondary damage to the human body, and the smoke density transmittance can reach more than 80%.

[0022] Preferably, the wire core 1 is formed by twisting a plurality of conductors, and the material of the insulating layer 2 is irradiated cross-linked polyethylene, which is extruded onto the outside of the wire core 1 by using an extrusion technique.

[0023] Among them, the multi-core copper conductor effectively improves the conductor compression coefficient, reduces the outer diameter of the conductor, and reduces the gap between the cores 1, thereby reducing the quality accidents of conductor oxidation caused by the entry of air and moisture into the conductor gap. The conductor has good conductivity and bending properties. The irradiated cross-linked polyethylene is used as the insulation layer 2. After extrusion, the cable is irradiated and cross-linked using the high-energy electron beam generated by the electron accelerator, so that the insulation layer 2 of the cable is changed from a linear molecular structure to a three-dimensional network structure, so that the insulation has the advantages of good dielectric properties, high temperature resistance, and waterproofness.

[0024] Preferably, the material of the first fireproof layer 3 is nano aerogel, and the material of the filling layer 4 is magnesium oxide.

[0025] Among them, nano aerogel has the characteristics of low thermal conductivity, which further enhances the fire resistance of the cable. The filler is filled with magnesium oxide, which is resistant to high temperatures and completely non-combustible. It can effectively improve the cable's high fire resistance, strong heat resistance, good pressure resistance and chemical corrosion resistance.

[0026] Furthermore, the load-bearing steel rope 6 is formed by twisting together a plurality of thin steel wires with excellent tensile strength, and the material of the protective sheath 7 is chlorinated polyvinyl chloride.

[0027] Among them, the load-bearing steel rope 6 is made of multiple fine steel wires with excellent tensile strength. The twisted steel rope has excellent tensile strength and bending properties. Chlorinated polyvinyl chloride is known for its high heat resistance, toughness and ductility, and is suitable for high temperature environments or applications requiring higher mechanical protection.

[0028] Furthermore, the shielding layer 8 is made of nickel-iron alloy, and the armor layer 10 is formed by welding and ribbed steel strips.

[0029] Among them, alloys such as nickel-iron alloy have extremely high magnetic permeability and are suitable for use in situations where high-frequency interference is required. The armor layer 10 is formed by welding and ribbing steel strips, and the melting point of the steel strips is 1500° C., so that the cable has good bending and fire resistance.

[0030] Preferably, the material of the second fireproof layer 9 is cable fireproof paint, and the outer sheath 11 is made of Class B polyolefin sheath material.

[0031] Among them, cable fire retardant coatings can form a uniform and dense sponge-like foam insulation layer when encountering fire, effectively inhibiting and blocking the spread and spread of flames. It is widely used in flame retardant treatment of wires and cables in power plants, industrial and mining, telecommunications and civil buildings, and can also be used for fire protection of other combustible substrates. The outer sheath 11 adopts B1 grade polyolefin sheath material, which has good mechanical properties; it also has excellent safety and environmental protection, does not extend combustion, does not drip, and will not cause secondary damage to the human body. The smoke density transmittance can reach more than 80%.

[0032] Furthermore, the material of the wear-resistant layer 12 is polyimide.

[0033] Among them, polyimide also has good wear resistance and high temperature resistance, and is suitable for cable protective layer materials in high temperature environments.

[0034] The working principle and use process of the utility model are as follows: when the device is needed, the cable can be laid at the required position. The wire core 1 effectively improves the conductor compression coefficient, reduces the outer diameter of the conductor, and reduces the gap between the wire cores 1, thereby reducing the quality accidents of conductor oxidation caused by the entry of air and moisture into the conductor gap. The wire core 1 is made of a plurality of copper conductors twisted together. Through this design, the battery core has good conductivity. The insulating layer 2 has the advantages of good dielectric properties, high temperature resistance and waterproofness. The load-bearing steel rope 6 has excellent tensile strength and bending properties. The filler itself is resistant to high temperature and does not burn at all, which can effectively improve the high fire resistance, strong heat resistance, good pressure resistance and chemical corrosion resistance of the cable. The armor layer 10 makes the cable have good bending performance and fire resistance, and the outer sheath 11 has good mechanical properties. It also has excellent safety and environmental protection, does not spread fire, does not drip, will not cause secondary damage to the human body, and the smoke density and light transmittance can reach more than 80%.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A B1-class fireproof cable for construction engineering, comprising a plurality of wire cores (1), characterized in that: The outer wall of the wire core (1) is fixedly connected to an insulating layer (2), the outer wall of the insulating layer (2) is fixedly connected to a first fireproof layer (3), the outer wall of the first fireproof layer (3) is fixedly connected to a filling layer (4), a plurality of mounting holes (5) are provided inside the filling layer (4), the inner wall of the mounting hole (5) is fixedly connected to a protective sleeve (7), the inner wall of the protective sleeve (7) is fixedly connected to a load-bearing steel rope (6), the outer wall of the filling layer (4) is fixedly connected to a shielding layer (8), the outer wall of the shielding layer (8) is fixedly connected to a second fireproof layer (9), the outer wall of the second fireproof layer (9) is fixedly connected to an armor layer (10), the outer wall of the armor layer (10) is fixedly connected to an outer sheath (11), and the outer wall of the outer sheath (11) is fixedly connected to a wear-resistant layer (12).

2. A B1-class fireproof cable for construction engineering hoisting according to claim 1, characterized in that: The wire core (1) is formed by twisting a plurality of conductors, and the material of the insulating layer (2) is irradiated cross-linked polyethylene, which is extruded onto the outside of the wire core (1) using extrusion technology.

3. A B1-class fireproof cable for construction engineering hoisting according to claim 1, characterized in that: The material of the first fireproof layer (3) is nano aerogel, and the material of the filling layer (4) is magnesium oxide.

4. A B1-class fireproof cable for construction engineering hoisting according to claim 1, characterized in that: The load-bearing steel rope (6) is formed by twisting together a plurality of thin steel wires with excellent tensile strength, and the material of the protective sheath (7) is chlorinated polyvinyl chloride.

5. A B1-class fireproof cable for construction engineering hoisting according to claim 1, characterized in that: The material of the shielding layer (8) is a nickel-iron alloy, and the armor layer (10) is formed by welding and corrugating steel strips.

6. A B1-class fireproof cable for construction engineering hoisting according to claim 1, characterized in that: The material of the second fireproof layer (9) is cable fireproof paint, and the outer sheath (11) is made of B1 grade polyolefin sheath material.

7. A B1-class fireproof cable for construction engineering hoisting according to claim 1, characterized in that: The material of the wear-resistant layer (12) is polyimide.

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