B1-level non-dripping power cable

Abstract

The utility model relates to the technical field of power cables, and discloses a B1-level drip-free power cable, which comprises a conductor, an insulator fixedly connected to the outer side of the conductor, a filler fixedly arranged on the outer side of the insulator, a first halogen-free belt fixedly connected to the outer side of the filler, an inner sheath fixedly connected to the outer side of the first halogen-free belt, and a second halogen-free belt fixedly connected to the outer side of the inner sheath. The outer side of the inner sheath is fixedly connected with a second halogen-free belt, the outer side of the second halogen-free belt is fixedly connected with a steel tape armor, the outer side of the steel tape armor is fixedly connected with a third halogen-free belt, and the outer side of the third halogen-free belt is fixedly connected with an outer sheath. The B1-level non-dripping power cable provided by the utility model is excellent in combustion performance, specifically in a plurality of technical indexes such as flame spread, heat release rate peak value and combustion growth rate index. Under a specific combustion experiment condition, the fire-extinguishing device can keep certain integrity and does not generate toxic gas and smoke, so that fire spreading is effectively controlled, and harm of the fire to personnel and property is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, and specifically relates to a B1-class non-dripping power cable. Background Art

[0002] With the wide application of cables in various industries, cable fire accidents are not uncommon, causing serious casualties and property losses. As a medium for power transmission, the safety of cables is directly related to people's lives and property. The implementation of the new standard GB 51348-2019 "Civil Building Electrical Design Standard" has put forward new guidance and requirements for low-voltage distribution design in the field of civil buildings. For public buildings with a building height exceeding 100 meters, refuge floors (rooms) where wires and cables need to be laid openly, and underground buildings where people stay for a long time, wires and cables with a combustion performance grade of B1, a smoke toxicity grade of t0, and a combustion drip / particle grade of d0 should be selected. A B1-class non-dripping (d0) power cable is now proposed.

[0003] The application number is 201621440760.5, which discloses a power cable including a conductor core and an insulating circle. The conductor cores are evenly distributed in the inner hole of the insulating circle in three equal parts. The cross-section of the conductor core is in the shape of a rounded isosceles triangle. The apex angles of the triangles are all close to the center of the inner hole of the insulating circle, and there are arc-shaped gaps for filling fire-resistant fillers between the hypotenuses of each of them and the inner hole wall of the insulating circle. There are channels between the waist sides of two adjacent triangles. The three channels converge at the center of the insulating circle to form a filling cavity. Fire-resistant fillers are filled in the filling cavity. Flap-shaped fire-resistant filler grooves extending towards their respective channels are formed at the three apex angles of the filling cavity and are filled with fire-resistant fillers. The parts of the three channels except for the flap-shaped fire-resistant filler grooves form a sealing cavity for filling flame-retardant fillers. Inner grooves are provided at the rounded corners of the cross-section of the conductor core, and fire-resistant fillers are filled in the inner grooves. A steel strip and a sheath layer are also provided outside the insulating circle. This cable can balance the fire-resistant performance and current-carrying capacity, and effectively improve the heat resistance temperature of the cable.

[0004] However, there are deficiencies. This power cable can balance the fire-resistant performance and current-carrying capacity and effectively improve the heat resistance temperature of the cable. However, for public buildings with a building height exceeding 100 meters, refuge floors (rooms) where wires and cables need to be laid openly, and underground buildings where people stay for a long time, wires and cables with a combustion performance grade of B1, a smoke toxicity grade of t0, and a combustion drip / particle grade of d0 should be selected. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a Class B1 non-dripping power cable, so as to solve the problem proposed in the above background technology that although this power cable can take into account fire resistance performance and current-carrying capacity and effectively increase the heat-resistant temperature of the cable, for public buildings with a building height exceeding 100 meters, refuge floors (rooms) where wires and cables need to be laid openly, and underground buildings where people stay for a long time, wires and cables with a combustion performance level of Class B1, a smoke toxicity level of t0, and a combustion drip / particle level of d0 should be selected.

[0006] To solve the above technical problems, the present utility model is realized through the following technical solutions:

[0007] The present utility model relates to a Class B1 non-dripping power cable, which includes a conductor. An insulation is fixedly connected to the outside of the conductor. A filling is fixedly arranged on the outside of the insulation. A halogen-free tape one is fixedly connected to the outside of the filling. An inner sheath is fixedly connected to the outside of the halogen-free tape one. A halogen-free tape two is fixedly connected to the outside of the inner sheath. A steel tape armor is fixedly connected to the outside of the halogen-free tape two. A halogen-free tape three is fixedly connected to the outside of the steel tape armor. An outer sheath is fixedly connected to the outside of the halogen-free tape three.

[0008] Further, the conductor is connected through the insulation and the filling.

[0009] Further, the insulation is connected through the filling and the halogen-free tape one.

[0010] Further, the filling is connected through the halogen-free tape one and the inner sheath.

[0011] Further, the halogen-free tape one is connected through the inner sheath and the halogen-free tape two.

[0012] Further, the inner sheath is connected through the halogen-free tape two and the steel tape armor.

[0013] Further, the halogen-free tape two is connected through the steel tape armor and the halogen-free tape three.

[0014] Further, the steel tape armor is connected through the halogen-free tape three and the outer sheath.

[0015] The present utility model has the following beneficial effects:

[0016] (1) The Class B1 non-dripping power cable provided by the present utility model performs excellently in terms of combustion performance, specifically reflected in multiple technical indicators such as flame spread, peak heat release rate, and combustion growth rate index. Under specific combustion test conditions, it can maintain a certain integrity, does not produce toxic gases and smoke, thereby effectively controlling the spread of fire and reducing the harm of fire to personnel and property.

[0017] (2) This cable mentioned in the present utility model pays attention to environmental protection performance during the design and manufacturing process. The materials used usually meet the environmental protection requirements and do not contain harmful substances. At the same time, no burning drips / particles will be generated during the combustion process, further reducing the risk of environmental pollution.

[0018] (3) The B1 - level non - dripping power cable of the present utility model meets the requirements of national standards such as GB 31247 - 2014 "Classification of the Burning Performance of Cables and Optical Cables" and industry specifications such as DGJ 08 - 2048 - 2016 "Code for Electrical Fire Prevention Design of Civil Buildings" and GB 50016 - 2018 "Code for Fire Protection Design of Buildings". Especially in places such as super high - rise buildings, first - class high - rise buildings and crowded public places, its application has been clearly promoted and required.

[0019] (4) Due to its excellent flame - retardant performance and environmental protection, the B1 - level non - dripping power cable of the present utility model has been widely used in crowded places such as high - rise buildings, commercial complexes, hospitals, and schools. These places have relatively high requirements for the flame - retardant performance of cables, and the B1 - level non - dripping power cable just meets this demand.

[0020] (5) In the building power distribution system of the present utility model, the safety performance of power cables is of crucial importance. The application of the B1 - level non - dripping (d0) power cable can improve the safety of buildings, reduce the possibility of fire accidents, and ensure the safety of people's lives and property.

[0021] (6) With the improvement of the society's requirements for environmental protection and safety performance, the research and application of the B1 - level non - dripping power cable will continuously promote the sustainable development of the cable industry. At the same time, this will also promote the continuous progress of the cable industry in aspects such as technological innovation and material research and development.

[0022] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above - mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic diagram of the conductor connection of the present utility model;

[0025] Figure 2 It is a schematic diagram of the connection of the halogen - free tape one of the present utility model;

[0026] Figure 3Schematic diagram of the steel tape armoring connection of the present utility model;

[0027] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0028] In the figure: 1. Conductor; 2. Insulation; 3. Filler; 4. Halogen-free tape one; 5. Inner sheath; 6. Halogen-free tape two; 7. Steel tape armoring; 8. Halogen-free tape three; 9. Outer sheath; Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figures 1 - 3 As shown, the present utility model is a B1-class non-dripping (d0) power cable, including a conductor 1, an insulation 2 is fixedly connected to the outside of the conductor 1, a filler 3 is fixedly provided on the outside of the insulation 2, a halogen-free tape one 4 is fixedly connected to the outside of the filler 3, an inner sheath 5 is fixedly connected to the outside of the halogen-free tape one 4, a halogen-free tape two 6 is fixedly connected to the outside of the inner sheath 5, a steel tape armoring 7 is fixedly connected to the outside of the halogen-free tape two 6, a halogen-free tape three 8 is fixedly connected to the outside of the steel tape armoring 7, and an outer sheath 9 is fixedly connected to the outside of the halogen-free tape three 8.

[0031] By adopting the above technical solution, in this solution, the conductor 1 is connected through the insulation 2 and the filler 3.

[0032] By adopting the above technical solution, in this solution, the insulation 2 is connected through the filler 3 and the halogen-free tape one 4.

[0033] By adopting the above technical solution, in this solution, the filler 3 is connected through the halogen-free tape one 4 and the inner sheath 5.

[0034] By adopting the above technical solution, in this solution, the halogen-free tape one 4 is connected through the inner sheath 5 and the halogen-free tape two 6.

[0035] By adopting the above technical solution, in this solution, the inner sheath 5 is connected through the halogen-free tape two 6 and the steel tape armoring 7.

[0036] By adopting the above technical solution, in this solution, the halogen-free tape two 6 is connected through the steel tape armoring 7 and the halogen-free tape three 8.

[0037] By adopting the above technical solution, in this solution, the steel tape armoring 7 is connected through the halogen-free tape three 8 and the outer sheath 9.

[0038] When in use, the utility model has the following advantages:

[0039] (1) The B1-level non-dripping (d0) power cable is excellent in combustion performance, specifically reflected in multiple technical indicators such as flame spread, peak heat release rate, and combustion growth rate index. Under specific combustion test conditions, it can maintain a certain integrity, without generating toxic gases and smoke, thus effectively controlling the spread of fire and reducing the harm of fire to personnel and property;

[0040] (2) The cable mentioned pays attention to environmental protection performance in the design and manufacturing process. The materials used usually meet environmental protection requirements and do not contain harmful substances. At the same time, no combustion drips / particles will be generated during the combustion process, further reducing the risk of environmental pollution;

[0041] (3) The B1-level non-dripping (d0) power cable meets the requirements of national standards such as GB 31247-2014 "Classification of the Combustion Performance of Cables and Optical Cables" and industry specifications such as DGJ 08-2048-2016 "Code for Electrical Fire Prevention Design of Civil Buildings" and GB 50016-2018 "Code for Fire Protection Design of Buildings". Especially in places such as super high-rise buildings, first-class high-rise buildings, and crowded public places, its application has been clearly promoted and required;

[0042] (4) Due to its excellent flame retardant performance and environmental protection, the B1-level non-dripping (d0) power cable has been widely used in crowded places such as high-rise buildings, commercial complexes, hospitals, and schools. These places have relatively high requirements for the flame retardant performance of cables, and the B1-level non-dripping (d0) power cable just meets this demand;

[0043] (5) In the building power distribution system, the safety performance of power cables is crucial. The application of the B1-level non-dripping (d0) power cable can improve the safety of buildings, reduce the possibility of fire accidents, and ensure the safety of people's lives and property;

[0044] (6) With the increasing requirements for environmental protection and safety performance in society, the research and application of the B1-level non-dripping (d0) power cable will continuously promote the sustainable development of the cable industry. At the same time, this will also promote the continuous progress of the cable industry in aspects such as technological innovation and material research and development; In summary, the significance of the B1-level non-dripping (d0) power cable lies not only in improving the flame retardant performance and environmental protection of cables, but also in meeting the requirements of national standards and specifications, expanding the application fields of cables, improving building safety, and promoting the sustainable development of the cable industry.

[0045] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A B1 - class non - dripping power cable, comprising a conductor (1), characterized in that: An insulator (2) is fixedly connected to the outside of the conductor (1), a filling (3) is fixedly provided on the outside of the insulator (2), a first halogen-free tape (4) is fixedly connected to the outside of the filling (3), an inner sheath (5) is fixedly connected to the outside of the first halogen-free tape (4), a second halogen-free tape (6) is fixedly connected to the outside of the inner sheath (5), a steel tape armor (7) is fixedly connected to the outside of the second halogen-free tape (6), a third halogen-free tape (8) is fixedly connected to the outside of the steel tape armor (7), and an outer sheath (9) is fixedly connected to the outside of the third halogen-free tape (8).

2. A B1 - class non - dripping power cable according to claim 1, characterized in that: The conductor (1) is connected through the insulator (2) and the filling (3).

3. A Class B1 non-dripping power cable according to claim 2, characterized in that: The insulator (2) is connected through the filling (3) and the first halogen-free tape (4).

4. A Class B1 non-dripping power cable according to claim 3, characterized in that: The filling (3) is connected through the first halogen-free tape (4) and the inner sheath (5).

5. A B1 - class non - dripping power cable according to claim 4, characterized in that: The first halogen-free tape (4) is connected through the inner sheath (5) and the second halogen-free tape (6).

6. A B1-class non-dripping power cable according to claim 5, characterized in that: The inner sheath (5) is connected through the second halogen-free tape (6) and the steel tape armor (7).

7. A B1 - class non - dripping power cable according to claim 6, characterized in that: The second halogen-free tape (6) is connected through the steel tape armor (7) and the third halogen-free tape (8).

8. A B1-class non-dripping power cable according to claim 7, characterized in that: The steel tape armor (7) is connected through the third halogen-free tape (8) and the outer sheath (9).

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