CN204667968U - A kind of resistant environmental low-smoke halogen-free flame cable - Google Patents

Abstract

The utility model relates to a kind of resistant environmental low-smoke halogen-free flame cable, belongs to power cable technical field.It comprises cable conductor, insulating barrier is arranged with outside cable conductor, the cable conductor of more than three or three with insulating barrier is twisted into bunch of cables, the outside of bunch of cables flame resistant filler layer successively from inside to outside, coating layer and restrictive coating, environment-friendly high-temperature flame resistant filler rope is filled with in flame resistant filler layer, coating layer adopts resistant environmental low-smoke halogen-free flame band, insulating barrier adopts the composite construction combined by inner insulating layer and insulating outer layer, inner insulating layer adopts environment-friendly type 105 DEG C of IXPE materials, insulating outer layer adopts environment-friendly type 105 DEG C of irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin materials.Restrictive coating adopts 105 DEG C of resistant environmental low-smoke halogen-free flame polyolefine materials.The utility model fire protection flame retarding designs, and high temperature resistant, Stability Analysis of Structures, effect is very good, and temperature resistant grade reaches 105 DEG C, and the anti-overload ability of cable is strong.

Description

An environmentally friendly low-smoke halogen-free flame-retardant cable

technical field

The utility model relates to a cable, in particular to an environment-friendly low-smoke halogen-free flame-retardant cable, which belongs to the technical field of electric wires and cables.

Background technique

With the rapid development of urban construction, high-rise buildings are getting taller and taller, and the requirements for electrical equipment are becoming increasingly stringent. Wires and cables are like human blood vessels, transporting power energy and various information signal resources for economic construction in all directions. However, in recent years, fires caused by electricity have gradually increased, and among them, fires caused by wires and cables account for a considerable proportion. Therefore, flame retardancy and fire prevention have become important indicators of cable performance. important.

With the advancement of science and technology, filling rope, as one of the important components of filling wire and cable, has become an important scientific and technological research and development project, and has increasingly attracted the attention of the industry and related industries. Most of the existing cable filling layers use asbestos and glass fiber. Flame-retardant filling materials, but the above-mentioned materials will cause flying dust when the cable is used, and enter the respiratory tract to form deposits, which is harmful to the human body and pollutes the environment and is not environmentally friendly. In addition, the temperature resistance level of the existing cable insulation materials can only reach 90°C, and the overload resistance is not strong.

Utility model content

The utility model aims at the deficiencies in the above-mentioned prior art, and provides an environment-friendly low-smoke halogen-free flame-retardant cable which is environmentally friendly, flame-retardant, high in temperature resistance and strong in overload resistance.

The technical scheme of the utility model to solve the above technical problems is as follows: an environment-friendly low-smoke halogen-free flame-retardant cable, including a cable conductor, an insulating layer is provided on the periphery of the cable conductor, and three or more cable conductors with an insulating layer Stranded into a cable bundle, the outside of the cable bundle is a flame-retardant filling layer, a coating layer and a sheath layer in sequence from the inside to the outside. The flame-retardant filling layer is filled with an environmentally friendly high-temperature flame-retardant filling rope, and the coating layer It is made of more than three layers of environmentally friendly low-smoke, halogen-free, and flame-retardant tapes. The insulating layer adopts a composite structure composed of an insulating inner layer and an insulating outer layer. The insulating inner layer is irradiated at 105°C. Cross-linked polyethylene material, the insulating outer layer adopts environment-friendly 105°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin material.

The sheath layer is made of 105°C environment-friendly low-smoke halogen-free flame-retardant polyolefin material, which further improves the environmental protection and flame-retardant performance of the cable.

The beneficial effects of the utility model are: the flame-retardant filling layer is filled with an environment-friendly high-temperature flame-retardant filling rope, which further enhances the flame-retardant and fire-resistant performance of the cable, and the cable adopts an environment-friendly high-temperature flame-retardant filling rope and an insulating composite structure from the inside. The outer fire-resistant and flame-retardant structure greatly improves the overall flame-retardant and fire-resistant performance of the cable. The fire-resistant and flame-retardant design, high temperature resistance, stable structure, and very good application effect. The cladding layer of the burning tape makes the appearance of the cable round and improves the flame retardant performance of the cable; the insulating layer adopts a composite structure, and the two layers are co-extruded at the same time to ensure a tight connection without gaps; the insulating inner layer is irradiated at 105°C with environmental protection Cross-linked polyethylene material, the insulating outer layer adopts environment-friendly 105°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin material. The electron accelerator is used to irradiate the insulating material with radiation, and the insulating material is modified by radiation cross-linking to improve the mechanical properties and aging resistance of the cable insulation. The temperature resistance level reaches 105 °C. Compared with ordinary low-smoke halogen-free flame-retardant cables, it is 10%-15% higher, and the cable has strong overload resistance.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1. Sheath layer; 2. Covering layer; 3. Flame-retardant filling layer; 4. Insulation outer layer; 5. Insulation inner layer; 6. Cable conductor.

Detailed ways

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Figure 1, an environmentally friendly low-smoke, halogen-free, flame-retardant cable includes a cable conductor 6, the outer periphery of which is provided with an insulating layer, and three or more cable conductors with an insulating layer are twisted into a cable bundle , the outside of the cable bundle is sequentially from the inside to the outside a flame-retardant filling layer 3, a coating layer 2 and a sheath layer 1, and the flame-retardant filling layer 3 is filled with an environmentally friendly high-temperature flame-retardant filling rope, and the coating layer 2. It is made of more than three layers of environmentally friendly low-smoke, halogen-free, and flame-retardant tapes. The insulating layer adopts a composite structure composed of an insulating inner layer 5 and an insulating outer layer 4. The insulating inner layer is made of environmentally friendly 105 ℃ radiation cross-linked polyethylene material, and the insulating outer layer is made of environment-friendly 105 ℃ radiation cross-linked low-smoke halogen-free flame-retardant polyolefin material.

The sheath layer 1 is made of 105°C environment-friendly low-smoke halogen-free flame-retardant polyolefin material, which further improves the environmental protection and flame-retardant performance of the cable.

The environment-friendly high-temperature flame-retardant filled rope includes a rope body and an environment-friendly flame retardant impregnated and coated on the rope body. The specific rope body is made of high-temperature-resistant cotton yarn through mechanical twisting into a single-strand rope, and then the single-strand rope is impregnated and coated with a certain thickness of flame-retardant layer, and then twisted into environmentally friendly flame-retardant fillers with different outer diameters for cable filling according to requirements. rope. By adopting the filling rope, the cable is overall soft, light in weight and high in strength, and does not contain harmful substances such as halogen, asbestos, glass fiber, etc., and meets the requirements of EU ROHS standards.

The cladding layer is made of more than three layers of environmentally friendly low-smoke, halogen-free, flame-retardant tapes and covers, forming a dense flame-retardant and oxygen-barrier layer. When the cable fires, the cladding layer forms an airtight shell, which prevents oxygen from entering the cable core and reduces the degree of damage to the insulation.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (2)

1. a resistant environmental low-smoke halogen-free flame cable, it is characterized in that, comprise cable conductor, insulating barrier is arranged with outside described cable conductor, the cable conductor of more than three or three with insulating barrier is twisted into bunch of cables, the outside of described bunch of cables flame resistant filler layer successively from inside to outside, coating layer and restrictive coating, environment-friendly high-temperature flame resistant filler rope is filled with in described flame resistant filler layer, described coating layer adopts the resistant environmental low-smoke halogen-free flame band coiling of more than three layers to form, described insulating barrier adopts the composite construction combined by inner insulating layer and insulating outer layer, described inner insulating layer adopts environment-friendly type 105 DEG C of IXPE materials, described insulating outer layer adopts environment-friendly type 105 DEG C of irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin materials.

2. resistant environmental low-smoke halogen-free flame cable according to claim 1, is characterized in that, described restrictive coating adopts 105 DEG C of resistant environmental low-smoke halogen-free flame polyolefine materials.