CN217086236U - Special silicon rubber insulation cable - Google Patents

Abstract

The utility model discloses a silicon rubber insulation special cable, which comprises three groups of insulation wire cores and a filling layer filled among the three groups of insulation wire cores, wherein the three groups of insulation wire cores are arranged in a mutually external tangent state, and a cabling belting layer, an armor layer and a sheath layer are sequentially arranged outside the insulation wire cores from inside to outside; and each group of insulated wire cores is sequentially provided with a shielding layer, an insulating layer, a first fire-resistant layer, a second fire-resistant layer and a soft copper conductor from outside to inside. Adopt special type cable, have simple structure, safe and reliable, the stable performance, quality and shielding are effectual, are used for this cable among the special type field of high temperature environment, can ensure the normal operating of consumer, have greatly improved product performance, its practicality is stronger, has extensive application place.

Description

Special silicon rubber insulation cable

Technical Field

The utility model belongs to the technical field of the power cable technique and specifically relates to a silicon rubber insulation special type cable.

Background

As an important supporting industry of national economy, the power cable industry is growing rapidly in demand for electric wires and cables with the continuous expansion of the scale of industries such as the chinese power industry, the data communication industry, the urban rail transit industry, the automobile industry, and the manufacturing and processing industry. Power cables, which are electric wires for transmitting and distributing electric energy, are now widely used in various fields, and are important transmission media indispensable for industrial and civil use. With the development of technology and the change of market, the demand of electric wires and cables is also rapidly increasing.

With the rapid development of social economy, the safety performance requirements of people on power cables in the using process are higher and higher, more and more people pay attention to the selection of the fire-resistant cables, and the silicon rubber insulated cables are also paid more and more attention to as a new flame-retardant fire-resistant cable. Because the silicone rubber material has the advantages of high temperature resistance, low temperature resistance (-60-200 ℃), acid and alkali resistance, oil resistance, combustion, aging resistance, weather resistance, mildew resistance, excellent flexibility, good electrical insulation and the like, the silicone rubber material is widely applied to the fields of high-temperature environments such as lighting lamps, household appliances, electric heating appliances, instruments, motor lead wires, electronics, lamps and dyeing appliances and the like, and the power cable is required to have excellent insulation performance and fire resistance. However, some cables currently used in the market have general quality and shielding effect, and cannot meet the use requirement in a high-temperature environment. Through retrieval, Chinese patent (No. CN201383379) discloses a silicone rubber insulation medium-voltage special cable which comprises a cable core, a shielding layer and an outer sheath, wherein the shielding layer comprises an inner shielding layer, an outer shielding layer and a copper wire braided shielding layer, the inner shielding layer is arranged outside the cable core, an insulating layer is arranged outside the inner shielding layer, the outer shielding layer is arranged outside the insulating layer, the copper wire braided shielding layer is arranged outside the outer shielding layer, and an adhesive tape layer is arranged between the copper wire braided shielding layer and the outer sheath. The utility model has the characteristics of very high insulation resistivity and can remain stable at very wide temperature and frequency range, have fine resistance to high-voltage corona discharge and arc discharge simultaneously, have high temperature resistant, electrical property excellent and resistant radiation. However, in the specific application process, the cable only has one cable core, and the inner shielding layer 2, the insulating layer 3, the outer shielding layer 4, the copper wire braided shielding layer 5, the adhesive tape layer 6 and the outer sheath 7 are sequentially arranged outside the cable core. In the field of high-temperature environment, when the cable core is in failure or damaged, the cable core cannot be used continuously. In addition, for example, chinese patent (No. CN205302977U) discloses a silicone rubber insulation shielding control cable, which comprises an outer layer and an inner layer, wherein the outer layer is sequentially provided with a silicone rubber sheath, a shielding layer, and an aluminum-plastic composite tape layer from outside to inside, the inner layer is provided with a plurality of twisted insulation wire cores, and each wire core is sequentially provided with a silicone rubber insulation layer, a protective layer, a fire-resistant layer, and a 5 th soft copper conductor from outside to inside. The utility model discloses a cable has excellent heat resistance, cold resistance, dielectricity, resistant ozone and performances such as ageing-resistant atmosphere, and the silica that generates after the burning still is the insulator. This is very advantageous for cables. And the cable has good shielding performance and anti-interference performance, and the shielding performance of the cable is greatly improved. However, in the specific application process, although a plurality of wire cores are provided, each wire core is sequentially provided with a silicon rubber insulation layer 4, a protective layer 3, a fire-resistant layer 2 and a 5 th soft copper conductor 1 from outside to inside; meanwhile, a layer of aluminum-plastic composite tape is wrapped outside the finished cable, and a copper wire braided shield is arranged outside the aluminum-plastic composite tape.

Therefore, in view of the above problems, there is a need to improve the existing cable, so as to provide a special cable with silicone rubber insulation.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to the problem that exists among the background art, provide a simple structure, safe and reliable, the stable performance, quality and shielding effectual cable utilize this cable to be arranged in the special field of high temperature environment, can ensure the normal operating of consumer, specifically speaking is the insulating special type cable of silicon rubber.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: a special silicon rubber insulated cable comprises three groups of insulated wire cores and a filling layer filled among the three groups of insulated wire cores, wherein the three groups of insulated wire cores are arranged in a mutually external tangent state, and a cabling belting layer, an armor layer and a sheath layer are sequentially arranged on the outer sides of the insulated wire cores from inside to outside; and each group of insulated wire cores is sequentially provided with a shielding layer, an insulating layer, a first fire-resistant layer, a second fire-resistant layer and a soft copper conductor from outside to inside.

Further, a silicon rubber insulation special type cable, wherein the filling layer adopts the fire-retardant rope of low smoke and zero halogen to fill the clearance department between the insulation core.

Further, a silicon rubber insulation special type cable, wherein the stranding band layer adopts the positive and negative two-layer of mica tape to form around the package, and it is not less than 50% around the package overlap ratio.

Further, a silicon rubber insulation special type cable, wherein the armor adopts the tinned wire to weave the steel mesh structure that forms, the weaving density of steel mesh structure is 75 ~ 80%.

Further, a silicon rubber insulation special type cable, wherein the sheath layer adopts low smoke and zero halogen polyolefin material to form the sheath structure through the crowded package.

Further, a silicon rubber insulation special type cable, wherein the shielding layer adopts the annealing copper wire that the diameter is 0.1 ~ 0.3mm to weave and forms the copper mesh structure, the weaving density of copper mesh structure is 85 ~ 90%.

Further, a silicon rubber insulation special type cable, wherein the insulating layer is silicon rubber insulating material and forms the sheath structure through crowded package.

Further, a silicon rubber insulation special type cable, wherein first flame retardant coating and second flame retardant coating all adopt the positive and negative two-layer of mica tape to form around the package, it is not less than 50% around the package overlap ratio, constitute double-deck refractory structure through first flame retardant coating and second flame retardant coating.

Further, a silicon rubber insulation special type cable, wherein the soft copper conductor adopts many kinds of 5 soft copper conductors transposition that accord with GB/T3956 regulation to form.

By adopting the special silicon rubber insulation cable, the soft copper conductor is formed by twisting a plurality of the 5 th soft copper conductors which conform to the GB/T3956 specification, so that the produced cable is very soft; the twisted conductor is wrapped with double-layer mica tapes as a fireproof structure, the mica tapes are extruded with silicon rubber insulating materials as insulating layers, the insulating layers are made of silicon rubber insulating materials, and the insulating layers are made of shielding layers formed by weaving copper wires, so that shielding and protection effects can be achieved; at last, cabling band layer, armor and restrictive coating have set gradually from inside to outside in the outside of insulation core and filling layer, thereby make special type cable, not only have good heat-resisting and fire-retardant characteristic, still have fine shielding and guard action, can prolong the life of cable.

Therefore, adopt special cable, have simple structure, safe and reliable, the stable performance, quality and shielding effect are good, be used for this cable among the special field of high temperature environment, can ensure the normal operating of consumer, greatly improved product performance, its practicality is stronger, has extensive application place.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the insulated wire core according to the present invention.

Shown in the figure: 1-an insulating wire core, 11-a shielding layer, 12-an insulating layer, 13-a first fire-resistant layer, 14-a second fire-resistant layer, 15-a soft copper conductor, 2-a filling layer, 3-a cabling tape layer, 4-an armor layer and 5-a sheath layer.

Detailed Description

As shown in fig. 1 and fig. 2, the special silicon rubber insulated cable of the present invention comprises three groups of insulated wire cores 1 and a filling layer 2 filled between the three groups of insulated wire cores 1, wherein the three groups of insulated wire cores 1 are arranged in a mutually external tangent state, and a cabling tape layer 3, an armor layer 4 and a sheath layer 5 are sequentially arranged outside the insulated wire cores 1 from inside to outside; and each group of insulated wire cores 1 is sequentially provided with a shielding layer 11, an insulating layer 12, a first fire-resistant layer 13, a second fire-resistant layer 14 and a soft copper conductor 15 from outside to inside.

Further, the special silicon rubber insulated cable of the present invention is characterized in that the filling layer 2 is filled in the gaps between the insulated cores 1 with low smoke halogen-free flame retardant ropes; the cabling tape layer 3 is formed by wrapping front and back mica tapes, and the wrapping overlapping rate is not lower than 50%; the armor layer 4 is a steel mesh structure formed by weaving tinned steel wires, and the weaving density of the steel mesh structure is 75-80%; the sheath layer 5 is of a sheath structure formed by extruding and wrapping low-smoke halogen-free polyolefin materials.

Further, the special silicon rubber insulation cable is characterized in that the shielding layer 11 is a copper mesh structure formed by weaving annealed copper wires with the diameter of 0.1-0.3 mm, and the weaving density of the copper mesh structure is 85-90%; the insulating layer 12 is a sheath structure formed by extruding and wrapping a silicon rubber insulating material; the first fireproof layer 13 and the second fireproof layer 14 are formed by wrapping front and back mica tapes, the wrapping overlapping rate is not lower than 50%, and a double-layer fireproof structure is formed by the first fireproof layer 13 and the second fireproof layer 14; the soft copper conductor 15 is formed by twisting a plurality of the 5 th soft copper conductors.

By adopting the special silicon rubber insulation cable, the soft copper conductor 15 is formed by twisting a plurality of the 5 th soft copper conductors which conform to the GB/T3956 specification, so that the produced cable is very soft; and a double-layer mica tape is wrapped outside the twisted conductor to form a fire-resistant structure, a silicon rubber insulating material is extruded outside the mica tape to form an insulating layer 12, and the insulating layer 12 is made of the silicon rubber insulating material which has excellent heat resistance, cold resistance, dielectric property, ozone resistance, atmospheric aging resistance and other properties. And the silica formed after combustion remains an insulator. The silicon rubber generates incombustible silicon dioxide ash after combustion to be self-extinguished, the silicon rubber has the characteristics of insolubility and insolubility, ash matters are still insulators with bone lattice structures and are permanently coated on the wire, and the silicon rubber has good insulating property, so that the silicon rubber is very favorable for cables; the shielding layer 11 formed by weaving copper wires is adopted on the outer layer of the insulating layer 12, so that the shielding and protecting effects can be achieved; at last, cabling band layer 3, armor 4 and restrictive coating 5 have set gradually from inside to outside in the outside of insulating sinle silk 1 and filling layer 2, wherein filling layer 2 adopts low smoke and zero halogen fire-retardant rope, and cabling band layer 3 uses the mica tape to wind the package, and armor 4 adopts the tinned wire to weave, and restrictive coating 5 adopts low smoke and zero halogen polyolefin material to form through crowded package, thereby makes special cable not only has good heat-resisting and fire-retardant characteristic, still has fine shielding and guard action, can prolong the life of cable.

To sum up, adopt special type cable, have simple structure, safe and reliable, the stable performance, quality and shielding are effectual, be used for this cable among the special type field of high temperature environment, can ensure the normal operating of consumer, greatly improved product performance, its practicality is stronger, has extensive application place.

The utility model discloses a protection scope is not only limited to the disclosed technical scheme of embodiment, above only do the utility model discloses a preferred embodiment, and not the restriction the utility model discloses, all basis the utility model discloses an any slight modification, equivalent replacement and improvement that technical scheme did all should contain within the utility model discloses within technical scheme's the protection scope.

Claims (1)

1. A special silicon rubber insulation cable is characterized in that: the cable comprises three groups of insulated wire cores (1) and a filling layer (2) filled among the three groups of insulated wire cores (1), wherein the three groups of insulated wire cores (1) are arranged in a mutual external tangent state, and a cabling wrapping tape layer (3), an armor layer (4) and a sheath layer (5) are sequentially arranged on the outer side of each insulated wire core (1) from inside to outside; each group of insulated wire cores (1) is sequentially provided with a shielding layer (11), an insulating layer (12), a first fire-resistant layer (13), a second fire-resistant layer (14) and a soft copper conductor (15) from outside to inside; wherein the filling layer (2) is filled in the gaps among the insulated wire cores (1) by adopting a low-smoke halogen-free flame-retardant rope; the cabling wrapping tape layer (3) is formed by wrapping front and back mica tapes, and the wrapping overlapping rate is not lower than 50%; the armor layer (4) is woven by adopting tinned steel wires to form a steel mesh structure, and the weaving density of the steel mesh structure is 75-80%; the sheath layer (5) is of a sheath structure formed by extruding and wrapping low-smoke halogen-free polyolefin materials; the shielding layer (11) is of a copper mesh structure formed by weaving annealed copper wires with the diameter of 0.1-0.3 mm, and the weaving density of the copper mesh structure is 85-90%; the insulating layer (12) is a sheath structure formed by extruding and wrapping a silicon rubber insulating material; the first fireproof layer (13) and the second fireproof layer (14) are formed by wrapping front and back mica tapes, the wrapping overlapping rate is not lower than 50%, and a double-layer fireproof structure is formed by the first fireproof layer (13) and the second fireproof layer (14); the soft copper conductor (15) is formed by stranding a plurality of 5 th soft copper conductors which meet the regulation of GB/T3956.

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