Waterproof high-flame-retardant electric wire for environmental protection engineering

Abstract

The utility model relates to the field of cables, and provides a waterproof high-flame-retardant wire for environmental protection engineering. The objective of the utility model is to overcome the defects of waterproof, flame-retardant and environment-friendly performance of the existing wire. According to the main scheme, the cable is composed of a copper conductor (1), a waterproof layer, an oxygen barrier layer (6) and a sheath layer which are sequentially arranged from inside to outside, the waterproof layer comprises a crosslinked polyethylene insulation layer (2), a silicone tube (3), a polyester belt (4) and a halogen-free low-smoke flame-retardant glass cloth belt (5) which are sequentially arranged from inside to outside, and the sheath layer comprises a non-woven fabric belt (7) and a glass fiber belt (8) which are sequentially arranged from inside to outside. And a halogen-free low-smoke flame-retardant polyolefin sheath (9).

Description

Technical Field

[0001] The utility model relates to the field of cables and provides a waterproof, highly flame-retardant and environmentally friendly electric wire for engineering. Background Art

[0002] With the rapid development of modern engineering construction, wires and cables, as key components of power transmission and distribution, have increasingly higher safety and reliability requirements. Especially in some special environments, such as humid places, high temperature areas, and flammable and explosive places, the waterproof, flame retardant and environmental protection performance of wires are particularly important. Therefore, the research and development of wire products with these characteristics has become an important direction for the development of the industry. The research and development of waterproof, highly flame retardant and environmentally friendly engineering wires is based on the comprehensive consideration of many factors such as the improvement of wire performance requirements in modern engineering construction, the advancement of waterproof and flame retardant technology, and the enhancement of environmental awareness. The research and development of such wire products will not only help improve the safety and reliability of engineering construction, but also help promote the sustainable development of the wire and cable industry.

[0003] Disadvantages of the above traditional technologies and their causes

[0004] The disadvantages are:

[0005] 1. Insufficient waterproof performance: The waterproof design of traditional wires and cables is often relatively simple and cannot effectively cope with complex and changeable humid environments. When exposed to moisture for a long time, the insulation layer of the wire is easily corroded, resulting in reduced insulation performance and increased risks of short circuits and leakage;

[0006] 2. Limited flame retardant performance: Although traditional wires and cables use certain flame retardant materials, their flame retardant effect is not ideal when facing high temperature or fire. Once a fire occurs, wires and cables can easily become a medium for the spread of fire, exacerbating the harm of the fire;

[0007] 3. Poor environmental performance: Traditional wires and cables may use some materials containing halogen or other harmful substances during the production process. These materials will produce toxic gases and smoke when burned, posing a threat to the environment and human health. At the same time, improper handling of discarded traditional wires and cables may also cause environmental pollution.

[0008] Cause:

[0009] 1. Limitations of material technology: The insulation and sheath materials of traditional wires and cables often cannot meet the requirements of waterproofing, flame retardancy and environmental protection at the same time;

[0010] 2. Lagging design concepts: The design of traditional wires and cables often focuses more on the realization of basic functions, such as conductivity and mechanical strength, while the requirements for waterproof, flame retardant and environmental protection properties are relatively low. Utility Model Content

[0011] The purpose of this utility model is to solve the shortcomings of existing wires in terms of waterproof, flame retardant and environmental protection performance. By adopting special waterproof materials and structural designs, as well as halogen-free low-smoke flame retardant materials, the normal operation of the wires in humid environments, stable operation in fires, and reduced harm to the environment and human body are achieved. Key technologies include a waterproof layer composed of cross-linked polyethylene insulation, silicone tubes, polyester tapes, halogen-free low-smoke flame retardant glass cloth tapes, and halogen-free low-smoke flame retardant polyolefin sheaths. These technical solutions jointly improve the waterproof performance, flame retardant performance and environmental protection of the wires, which are superior to traditional wires.

[0012] In order to achieve the above purpose, the utility model adopts the following technical means:

[0013] A waterproof, highly flame-retardant, environmentally friendly engineering wire comprises a copper conductor, a waterproof layer, an oxygen-isolating layer and a sheath layer which are arranged in sequence from the inside to the outside, wherein the waterproof layer comprises a cross-linked polyethylene insulation, a silicone tube, a polyester tape, and a halogen-free, low-smoke, flame-retardant glass cloth tape which are arranged in sequence from the inside to the outside, and the sheath layer comprises a non-woven fabric tape, a glass fiber tape, and a halogen-free, low-smoke, flame-retardant polyolefin sheath which are arranged in sequence from the inside to the outside.

[0014] In the above technical solution, the oxygen-isolating layer adopts halogen-free, low-smoke, flame-retardant oxygen-isolating layer material.

[0015] In the above technical solution, a tensile braided layer is provided between the copper conductor and the cross-linked polyethylene insulation.

[0016] In the above technical solution, the tensile braided layer is made of aramid material. In actual use, the use environment of the wire may have the risk of mechanical damage. The utility model adds a braided layer with high tensile strength between the copper conductor and the cross-linked polyethylene insulation to improve the tensile and impact resistance of the wire.

[0017] In the above technical solution, an expanding flame retardant layer is provided between the oxygen-isolating layer and the sheath layer. This material will expand when encountering fire to form a carbonized layer, thereby blocking the transfer of oxygen and heat, thereby providing longer-term fire isolation.

[0018] In the above technical solution, the expandable flame retardant layer adopts expandable polymer, specifically ammonium polyphosphate.

[0019] Expandable polymers are materials that expand rapidly when heated, forming a porous carbon layer. For example, polymers containing expandable phosphates.

[0020] Ammonium polyphosphate is a commonly used intumescent flame retardant that can decompose at high temperatures to produce phosphates, which help form a stable carbonized layer and improve the flame retardant properties of the material.

[0021] The utility model proposes a new technical solution to the problem that the existing technology of wires and cables have insufficient waterproof, flame retardant and environmental protection performance. Its key points and protection points are mainly reflected in the following three aspects:

[0022] 1. Excellent waterproof performance:

[0023] Technical means: A multi-layer waterproof layer is formed by combining cross-linked polyethylene insulation, silicone tube, polyester tape and halogen-free low-smoke flame-retardant glass cloth tape.

[0024] Technical problem solved: Traditional wires and cables are easily corroded by moisture in humid environments, resulting in reduced insulation performance and increased risks of short circuits and leakage.

[0025] Effect achieved: Through this structural design, the insulation performance of wires in humid environments is significantly improved, moisture penetration is effectively prevented, and the risk of short circuit and leakage is reduced.

[0026] Advantages over existing technologies: Compared with the simple waterproof design of traditional wires, this patent provides a more complex and effective waterproof solution, especially in complex and changeable humid environments.

[0027] 2. High flame retardant properties:

[0028] Technical means: Use halogen-free low-smoke flame-retardant polyolefin plastic as the oxygen barrier layer and sheath layer material, combined with expansion flame-retardant layer, non-woven fabric tape and glass fiber tape.

[0029] Technical problem to be solved: Traditional wires and cables have insufficient flame retardancy in high temperature or fire environments and can easily become a medium for the spread of fire.

[0030] Effect achieved: This material combination can quickly form an inert carbon layer when encountering an open flame, effectively isolating the fire source and significantly improving the flame retardant performance of the wire in a fire.

[0031] Advantages over existing technologies: Compared with flame-retardant materials for traditional wires and cables, the new flame-retardant material used in this patent not only has better flame-retardant properties, but also does not contain harmful substances such as halogens, and has less impact on the environment and human health.

[0032] 3. Environmentally friendly:

[0033] Technical means: During the entire manufacturing process of the wire, environmentally friendly insulation materials and sheath materials that do not contain harmful substances are used.

[0034] Technical problem to be solved: Traditional wires and cables may cause environmental pollution during production and disposal.

[0035] The effect achieved: avoiding the use of harmful substances such as halogen, reducing the smoke and toxic gas generated when the wires are burned, and reducing the harm to the environment and human body.

[0036] Advantages over existing technologies: This patented technology complies with environmental protection requirements throughout its entire life cycle, from production to waste disposal, reflecting the wire and cable industry's move towards sustainable development.

[0037] In summary, this patented technology, through its unique material selection and structural design, effectively solves the shortcomings of traditional wires and cables in terms of waterproof, flame retardant and environmental protection performance, and demonstrates its important application value and market potential in modern engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION

[0039] The following is a detailed description of the embodiments of the present invention. Although the present invention will be described and illustrated in conjunction with some specific implementations, it should be noted that the present invention is not limited to these implementations. On the contrary, modifications or equivalent replacements made to the present invention should be included in the scope of the claims of the present invention.

[0040] In addition, in order to better illustrate the present invention, numerous specific details are given in the following specific embodiments. Those skilled in the art will understand that the present invention can also be implemented without these specific details.

[0041] The utility model provides a waterproof and highly flame-retardant environmentally friendly engineering wire, which comprises a copper conductor 1, a waterproof layer, an oxygen-isolating layer 6 and a sheath layer which are arranged in sequence from the inside to the outside.

[0042] 1. The waterproof structure of the utility model is composed of cross-linked polyethylene insulation 2, silicone tube 3, polyester tape 4, and halogen-free low-smoke flame-retardant glass cloth tape 5, which ensures that the product has strong waterproof performance. The cross-linked polyethylene insulation 2 has waterproof performance, the silicone tube 3 has a buffering effect, the polyester tape 4 can improve the anti-aging performance, the halogen-free low-smoke flame-retardant glass cloth tape 5 can improve the flame retardant performance, and the silicone tube 3 is used between the cross-linked polyethylene insulation 2 and the polyester tape 4 to reduce the damage to the insulation caused by temperature changes and enhance the waterproof performance.

[0043] 2. The high flame retardant structure of the utility model adopts an oxygen isolation layer 6, and the sheath layer is composed of a non-woven fabric tape 7, a glass fiber tape 8, and a halogen-free low-smoke flame-retardant polyolefin sheath 9, which ensures that the product has strong flame retardant properties. Halogen-free low-smoke flame retardant polyolefin plastic is a new type of flame retardant material. Compared with traditional flame retardant materials, it does not contain halogen elements and therefore has lower environmental pollution. This material has excellent flame retardant properties. When it encounters open flames, it can quickly produce an inert carbon layer, effectively isolate the fire source, and prevent the spread of fire. Using non-woven fabric tape + glass fiber tape at the same time can improve the tensile strength and wear resistance of the wire, making it easier to lay.

[0044] 3. The utility model is made of environmentally friendly materials and does not contain harmful substances such as halogens. When burning, it produces less smoke and toxic gas, which reduces the harm to the environment and human body and increases the survival rate of personnel.

[0045] The utility model has a clear structure and a reasonable design concept. It adopts a copper conductor 1, a cross-linked polyethylene insulation 2, a silicone tube 3, a polyester tape 4, a halogen-free low-smoke flame-retardant glass cloth tape 5, an oxygen insulation layer 6, a non-woven fabric tape 7, a glass fiber tape 8, and a halogen-free low-smoke flame-retardant polyolefin sheath 9, which improves the waterproof performance of the wire, has high flame retardant performance, and meets environmental protection requirements.

[0046] Compared with the existing technology, this patented technology has the following advantages:

[0047] 1. Excellent waterproof performance:

[0048] Advantages: This patented technology uses special waterproof materials and processing technology to ensure that the wires can still maintain good insulation performance in a humid environment, effectively preventing moisture penetration and short circuit problems.

[0049] Technical solution: Through cross-linked polyethylene insulation, silicone tube, polyester tape, halogen-free low-smoke flame-retardant glass cloth tape, excellent waterproof effect of the wire is achieved.

[0050] 2. High flame retardant properties:

[0051] Advantages: This patented technology uses materials with excellent flame retardant properties to ensure that the wires can maintain stable operation for a long time during a fire, providing valuable time for personnel evacuation and fire fighting.

[0052] Technical solution: Utilize new flame retardant materials such as halogen-free low-smoke flame retardant polyolefin plastics, and achieve high flame retardant properties of wires through oxygen insulation layer, non-woven fabric tape, glass fiber tape, and halogen-free low-smoke flame retardant polyolefin outer sheath.

[0053] 3. Environmental protection is remarkable:

[0054] Advantages: The materials used in this patent are all environmentally friendly materials, do not contain harmful substances, and meet the environmental protection requirements of modern engineering construction.

[0055] Technical solution: Select environmentally friendly insulation materials and sheath materials, avoid using materials containing halogens and other harmful substances, and ensure the environmental performance of wires from the source.

[0056] Example 1

[0057] A waterproof, highly flame-retardant, environmentally friendly engineering wire comprises a copper conductor (1), a waterproof layer, an oxygen-isolating layer (6), and a sheath layer, which are arranged in sequence from the inside to the outside. The waterproof layer comprises a cross-linked polyethylene insulation (2), a silicone tube (3), a polyester tape (4), and a halogen-free, low-smoke, flame-retardant glass cloth tape (5), which are arranged in sequence from the inside to the outside. The sheath layer comprises a non-woven tape (7), a glass fiber tape (8), and a halogen-free, low-smoke, flame-retardant polyolefin sheath (9), which are arranged in sequence from the inside to the outside. The oxygen-isolating layer (6) is made of a halogen-free, low-smoke, flame-retardant, oxygen-isolating layer material.

[0058] Example 2

[0059] A tensile braided layer is also provided between the copper conductor and the cross-linked polyethylene insulation, and the tensile braided layer is made of aramid material. In actual use, the use environment of the wire may have the risk of mechanical damage. The utility model adds a braided layer with high tensile strength between the copper conductor and the cross-linked polyethylene insulation to improve the tensile and impact resistance of the wire.

[0060] Example 3

[0061] An expanding flame retardant layer is provided between the oxygen barrier layer and the sheath layer. This material will expand when encountering fire to form a carbonized layer, blocking the transfer of oxygen and heat, thereby providing longer-term fire isolation.

[0062] The intumescent flame retardant layer adopts an intumescent polymer, specifically ammonium polyphosphate.

[0063] Expandable polymers are materials that expand rapidly when heated, forming a porous carbon layer. For example, polymers containing expandable phosphates.

[0064] Ammonium polyphosphate is a commonly used intumescent flame retardant that can decompose at high temperatures to produce phosphates, which help form a stable carbonized layer and improve the flame retardant properties of the material.

Claims

1. A waterproof, highly flame-retardant, environmentally friendly engineering wire, characterized by: The invention comprises a copper conductor (1), a waterproof layer, an oxygen-isolating layer (6), and a sheath layer, which are arranged in sequence from the inside to the outside. The waterproof layer comprises a cross-linked polyethylene insulation (2), a silicone tube (3), a polyester tape (4), and a halogen-free, low-smoke, flame-retardant glass cloth tape (5), which are arranged in sequence from the inside to the outside. The sheath layer comprises a non-woven tape (7), a glass fiber tape (8), and a halogen-free, low-smoke, flame-retardant polyolefin sheath (9), which are arranged in sequence from the inside to the outside.

2. A waterproof, highly flame-retardant, environmentally friendly engineering wire according to claim 1, characterized in that: The oxygen-isolating layer (6) is made of halogen-free, low-smoke, flame-retardant oxygen-isolating layer material.

3. The waterproof, highly flame-retardant, environmentally friendly engineering wire according to claim 1, characterized in that: A tensile braided layer is also provided between the copper conductor and the cross-linked polyethylene insulation.

4. A waterproof, highly flame-retardant, environmentally friendly engineering wire according to claim 3, characterized in that: The tensile braided layer is made of aramid material.

5. The waterproof, highly flame-retardant, environmentally friendly engineering wire according to claim 1, characterized in that: An expansion flame retardant layer is arranged between the oxygen barrier layer and the sheath layer.

6. The waterproof, highly flame-retardant, environmentally friendly engineering wire according to claim 5, characterized in that: The intumescent flame retardant layer adopts an intumescent polymer.

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