CN221960740U - Reinforced silicone rubber cable - Google Patents

Abstract

The utility model provides a reinforced silicone rubber cable, belonging to the technical field of silicone rubber cables, comprising a central structural member, an extruded separation layer is arranged on the central structural member, a plurality of wire cores are arranged around the separation layer at equal intervals, a low-temperature resistant moisture-proof layer is arranged on the wire core, a wrapped fire-resistant flame-retardant layer is arranged on the low-temperature resistant moisture-proof layer, the fire-resistant flame-retardant layer comprises a hollow circular tube or a hollow strip tube, and the hollow circular tube or the hollow strip tube are both spirally wound on the low-temperature resistant moisture-proof layer, and a flame retardant inner core is arranged in the hollow circular tube or the hollow strip tube. Through the utility model, the fire-resistant flame-retardant layer is added inside the cable to enhance the fire-resistant and flame-retardant properties of the silicone rubber cable, so that when encountering an open flame, a sufficient amount of flame retardant can form a glass-like or stable foam covering layer of sufficient thickness to isolate oxygen and achieve the purpose of flame retardancy, and the design of the spiral structure reduces the influence on the overall flexibility of the silicone rubber cable.

Description

A reinforced silicone rubber cable

Technical Field

The utility model mainly relates to the technical field of silicone rubber cables, in particular to a reinforced silicone rubber cable.

Background Art

A cable is a wire made of one or more mutually insulated conductors and an outer insulating protective layer, laid underground, in the air, etc. Cables are generally composed of three parts: conductor, insulating layer, and protective layer. There are usually two types of power cables and control cables. Power cables are mainly used for the transmission and distribution of electric energy, and control cables are mainly used for measurement, protection, control and other lines. Cables have the characteristics of internal power supply and external insulation.

Among them, silicone cables are suitable for fixed power transmission lines with AC rated voltage of 0.6/1KV and below, or connecting cables for mobile electrical appliances. The products have the characteristics of heat radiation resistance, cold resistance, acid and alkali resistance, corrosive gas resistance, waterproofness, etc. The cable structure is soft, radiation is convenient, the electrical performance is stable under high temperature (high cold) environment, the anti-aging performance is outstanding, and the service life is long. It is widely used in metallurgy, electric power, petrochemical, electronics, automobile manufacturing and other industries. At present, in order to improve the fire resistance and high temperature resistance of silicone rubber cables, flame retardants are mainly added to the materials of the sheath layer. Due to the need to ensure the rationality of the distribution ratio of each component of the sheath layer to ensure the waterproof, acid and alkali resistance and other characteristics of the sheath, only a small amount of flame retardant can be used, and the flame retardant effect is not good. The addition of flame retardants will also affect the flexibility of silicone rubber cables, which is not conducive to the laying of cables and increases the difficulty of cable laying.

Utility Model Content

The technical solution of the utility model aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the utility model mainly provides a reinforced silicone rubber cable to solve the technical problem proposed in the above background technology that in order to improve the fire resistance of the cable, flame retardants are mainly added to the components of the sheath layer, but the flame retardant effect is poor due to the limited amount used.

The technical solution adopted by the utility model to solve the above technical problems is:

A reinforced silicone rubber cable comprises a central structural member, an extruded separation layer is arranged on the central structural member, a plurality of wire cores are arranged around the separation layer at equal intervals, a low-temperature resistant moisture-proof layer is arranged on the wire core, a wrapped fire-resistant flame-retardant layer is arranged on the low-temperature resistant moisture-proof layer, the fire-resistant flame-retardant layer comprises a hollow circular tube or a hollow strip tube, and the hollow circular tube or the hollow strip tube are both spirally wound on the low-temperature resistant moisture-proof layer, and a flame retardant inner core is arranged in the hollow circular tube or the hollow strip tube.

Furthermore, an extruded silicone rubber sheath is disposed outside the fire-resistant and flame-retardant layer, and the cross-sectional radius of the silicone rubber sheath is greater than the cross-sectional radius of the low-temperature resistant and moisture-proof layer.

Furthermore, each of the wire cores includes a copper conductor and an insulating sheath.

Furthermore, compression-resistant filling particles are filled between every two adjacent wire cores.

Furthermore, the central structural member includes a first reinforcing rib, which is located on the central axis of the entire cable. Three second reinforcing ribs are arranged around the first reinforcing rib at equal intervals, and an elastic filling block is arranged between every two adjacent second reinforcing ribs.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model realizes the formation of a fire-resistant and flame-retardant layer inside the cable by arranging the hollow circular tube, the hollow strip tube and the flame retardant inner core, so as to enhance the fire-resistant and flame-retardant properties of the silicone rubber cable, so that when encountering an open flame, there is a sufficient amount of flame retardant to form a glass-like or stable foam covering layer of sufficient thickness to isolate oxygen and achieve the purpose of flame retardancy. In addition, the spiral structure design of the hollow circular tube and the hollow strip tube reduces the influence on the overall flexibility of the silicone rubber cable, is easy to bend, and is therefore conducive to the laying of the cable. In addition, the utility model has a simple structure and is convenient for processing, and has certain practical value.

The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the cross-sectional structure of a silicone rubber cable of the present invention;

FIG2 is a schematic diagram of the hollow circular tube distribution structure of the utility model;

FIG. 3 is a schematic diagram of the distribution structure of the hollow tube strips of the present invention.

In the figure: 1. central structural member; 11. first reinforcing rib; 12. second reinforcing rib; 13. elastic filling block; 2. separation layer; 3. wire core; 31. copper conductor; 32. insulating sheath; 4. pressure-resistant filling particles; 5. low-temperature resistant moisture-proof layer; 6. fire-resistant flame-retardant layer; 61. hollow circular tube; 62. hollow strip tube; 63. flame retardant inner core; 7. silicone rubber sheath.

DETAILED DESCRIPTION

In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and/or" used herein includes any and all combinations of one or more related listed items.

Please refer to Figures 1-3 in particular, a reinforced silicone rubber cable, including a central structural member 1, an extruded separation layer 2 is provided on the central structural member 1, a plurality of wire cores 3 are arranged around the separation layer 2 at equal intervals, a low-temperature resistant moisture-proof layer 5 is provided on the wire core 3, a wrapped fire-resistant flame-retardant layer 6 is provided on the low-temperature resistant moisture-proof layer 5, the fire-resistant flame-retardant layer 6 includes a hollow circular tube 61 or a hollow strip tube 62, and the hollow circular tube 61 or the hollow strip tube 62 are both spirally wound on the low-temperature resistant moisture-proof layer 5, a flame retardant inner core 63 is provided in the hollow circular tube 61 or the hollow strip tube 62, the hollow circular tube 61 or the hollow strip tube 62 are both extruded on the flame retardant inner core 63, and then wrapped on the low-temperature resistant moisture-proof layer 5 after cooling treatment.

Through the above structure, it is achieved to add a fire-resistant and flame-retardant layer 6 inside the cable to enhance the fire-resistant and flame-retardant properties of the silicone rubber cable, so that when encountering an open flame, a sufficient amount of flame retardant can form a glass-like or stable foam covering layer of sufficient thickness to isolate oxygen and achieve the purpose of flame retardancy. The design of the spiral structure reduces the impact on the overall flexibility of the silicone rubber cable, which is beneficial to the laying of the cable. The structure is simple and easy to process, and it has certain practical value.

Please pay special attention to Figures 1 and 2. An extruded silicone rubber sheath 7 is provided outside the fire-resistant and flame-retardant layer 6, and the cross-sectional radius of the silicone rubber sheath 7 is larger than the cross-sectional radius of the low-temperature resistant and moisture-proof layer 5. The silicone rubber sheath 7 is used to protect the entire exterior of the cable. Each of the cores 3 includes a copper conductor 31 and an insulating sheath 32. Compression-resistant filling particles 4 are filled between each two adjacent cores 3. The compression-resistant filling particles 4 reduce the extrusion wear between the cores 3 and protect the cores 3. The central structural member 1 includes a first reinforcing rib 11, which is located on the central axis of the entire cable. Three second reinforcing ribs 12 are evenly spaced around the first reinforcing rib 11, and an elastic filling block 13 is provided between each two adjacent second reinforcing ribs 12. The first reinforcing rib 11, the second reinforcing rib 12 and the elastic filling block 13 cooperate with each other to improve the overall toughness and tensile strength of the cable.

The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims (5)

1. The utility model provides a strenghthened type silicone rubber cable, includes central structure (1), be provided with crowded package fashioned separate layer (2) on central structure (1), equidistant surrounding is provided with a plurality of sinle silk (3) outward in separate layer (2), be provided with low temperature resistant dampproof course (5) on sinle silk (3), a serial communication port, be provided with on low temperature resistant dampproof course (5) around package fashioned fire-resistant flame retardant layer (6), fire-resistant flame retardant layer (6) include hollow pipe (61) or hollow strip pipe (62), and hollow pipe (61) or hollow strip pipe (62) all are the heliciform, twine on low temperature resistant dampproof course (5), all be provided with fire retardant inner core (63) in hollow pipe (61) or hollow strip pipe (62).

2. A reinforced silicone rubber cable according to claim 1, characterized in that the fire-resistant flame-retardant layer (6) is externally provided with an extruded silicone rubber sheath (7), and the cross-sectional radius of the silicone rubber sheath (7) is larger than the cross-sectional radius of the low temperature resistant moisture-proof layer (5).

3. A reinforced silicone rubber cable according to claim 1, characterized in that each of said wire cores (3) comprises a copper conductor (31) and an insulating sheath (32).

4. A reinforced silicone rubber cable according to claim 3, characterized in that between each adjacent two cores (3) compression-resistant filler particles (4) are filled.

5. A reinforced silicone rubber cable according to claim 1, characterized in that the central structural member (1) comprises first reinforcing ribs (11), the first reinforcing ribs (11) are located on the central axis of the whole cable, three second reinforcing ribs (12) are arranged on the first reinforcing ribs (11) in an equidistant surrounding manner, and elastic filling blocks (13) are arranged between every two adjacent second reinforcing ribs (12).