CN210429403U - Rare earth aluminum alloy irradiation phenylene silicon rubber insulation flame-retardant power cable - Google Patents

Abstract

The utility model discloses a rare earth aluminum alloy irradiation phenylene silicon rubber insulation flame retardant power cable, including rare earth aluminum alloy conductor, at rare earth aluminum alloy conductor outer cladding irradiation phenylene silicon rubber insulating layer, at the outer cladding shielding tape of irradiation phenylene silicon rubber insulating layer, at the high electrical property calcination argil flame retardant coating of shielding outband cladding, calcine argil flame retardant coating at the high electrical property and wrap the outer zero halogen low cigarette polyolefin ribbon of high strength, at the outer compound winding band of wrapping polyester fiber enhancement mode of high strength zero halogen low cigarette polyolefin ribbon, at the outer crowded pottery porcelain polyolefin oversheath of wrapping of polyester fiber enhancement mode compound winding band. The utility model discloses have high shielding, anti-electromagnetic interference, physical mechanical properties and good flame retardant property, elongation at break is high, and resistant fracture performance is good.

Description

Rare earth aluminum alloy irradiation phenylene silicon rubber insulation flame-retardant power cable

Technical Field

The utility model relates to a cable field, concretely relates to tombarthite aluminum alloy irradiation phenylene silicon rubber insulation flame retardant power cable.

Background

With the development of the power industry, the transmission rate of the direct current cable is high, and the line loss is small; the current is adjusted and the transmission direction is changed conveniently; the installation and maintenance cost is low, and the like, and the cable is more and more applied to various fields, and the safety and reliability requirements of electrical equipment used in subways, nuclear power stations, markets, hospitals, intelligent buildings and the like are higher and higher, so that the development of a new generation of environment-friendly direct current cables is urgently required.

Along with the frequent occurrence of fire accidents, people continuously deepen the understanding of the fire hazard risk of the electric wire and the electric cable, and the requirements of relevant departments on the performances of fire prevention, flame retardance and the like of the electric wire and the electric cable are higher and higher. The cable fire disaster has the characteristics of fast spread, difficult fire fighting, secondary hazard generation, long recovery time and the like, and can bring huge loss to national economy and the lives and properties of people. Therefore, more severe operating conditions are provided for the flame retardant property, the fireproof property and the safety and reliability of the wires and cables. If the fire-fighting elevator and the fire pump are in fire prevention, explosion prevention, strong overload capacity and long service life, the fire-fighting elevator and the fire pump need to be kept in normal operation for a certain time under the condition of fire, and the cable has special requirements of low smoke, low halogen and low toxicity after combustion, even no smoke, no halogen, no toxicity and the like. The fire-retardant and fire-proof measures of the cable are important means for reducing the fire delay of the cable, and the key point is that the fire-retardant and fire-proof measures are mainly used for preventing fire, and various fire-retardant cables, fire-resistant cables and fire-proof cables are widely applied.

The cable in the prior art generally adopts copper wires as conductors, so that the weight of the cable is very heavy, operators are very laboursome to move, and the operation and the use are very inconvenient; the existing cable has poor electromagnetic pulse resistance, and can generate electromagnetic interference in practical application;

the development and the start of domestic flame-retardant cables are late, the test levels of technical equipment of various manufacturers are different, and in addition, in recent years, customers have strong requirements on medium-voltage flame-retardant cables and the technical requirements on the cables are higher and higher, so that many manufacturers cannot design and produce medium-voltage flame-retardant power cable products meeting the technical requirements of high-rise buildings due to limited technical strength.

SUMMERY OF THE UTILITY MODEL

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the rare earth aluminum alloy irradiated phenylene silicone rubber insulated flame-retardant power cable is provided, and has the advantages of good physical and mechanical properties, good flame retardant property, high elongation at break and good cracking resistance.

The technical scheme is as follows: in order to realize the above-mentioned purpose, the utility model provides a rare earth aluminum alloy irradiation phenylene silicon rubber insulation flame retardant power cable, including rare earth aluminum alloy conductor, cladding irradiation phenylene silicon rubber insulating layer outside rare earth aluminum alloy conductor, at the outer cladding shielding tape of irradiation phenylene silicon rubber insulating layer, the pottery clay flame retardant coating is calcined to the high electrical property of cladding outside the shielding tape, calcine the pottery clay flame retardant coating outside the package high strength does not have steamed low cigarette polyolefin ribbon, at the outer compound winding band of package polyester fiber enhancement mode of high strength does not have steamed low cigarette polyolefin ribbon, at the outer crowded pottery polyolefin oversheath of package outside the compound band of polyester fiber enhancement mode.

Further, the shield tape includes a tape base, a magnetic hot-melt adhesive layer provided on a surface of the tape base and formed of a magnetic resin composition containing a magnetic powder and a hot-melt adhesive, and a conductive metal layer provided on a back surface of the tape base and formed of a conductive metal.

Furthermore, the polyester fiber reinforced composite winding wrapping tape comprises a substrate layer, an adhesive layer and a surface layer, wherein the substrate layer is a polyester film layer, the surface layer is a fireproof non-woven fabric layer, the adhesive layer is a polyurethane adhesive layer, polyester fiber yarns are wrapped in the substrate layer, and the substrate layer is combined with the surface layer through the adhesive layer.

Further, the hot-melt adhesive is formed of an olefin resin.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the cable conductor prepared from the rare earth aluminum alloy can reduce the overall weight of the cable, improve the mobility and the operability of the cable, save time and labor and is convenient to use;

2. the insulation adopts irradiated phenylene silicon rubber, and after extrusion, an electron accelerator is irradiated to enhance the high temperature resistance, flexibility and tear resistance of the wire core;

3. the cable adopts the high-electric calcined argil flame-retardant layer, so that the cable obtains double flame-retardant effect, provides dozens of times of flame retardance compared with the common cable, and also has the best reinforcing performance and stronger electric insulation;

4. by adopting the composite shielding band structure, the flexibility and the bending resistance can be maintained, and the electromagnetic shielding performance and the magnetic shielding performance can be exerted, so that the cable can not be subjected to electromagnetic interference;

5. the high-strength cable is tightly bound by the high-strength binding belt made of the high-strength halogen-free low-smoke polyolefin material, so that the cable is tightly combined into a stable integral structure, and the integral tensile strength of the cable is greatly improved; the cable has good physical and mechanical properties, good flame retardant property, high elongation at break and good cracking resistance;

6. the polyester fiber reinforced composite winding wrapping tape is arranged, so that the cable has better flexibility, the wrapping tape can be tightly attached to the surface of the high-strength halogen-free low-smoke polyolefin binding tape in the winding process, the problem of untight winding is solved, and the corrosion resistance of the cable is favorably ensured;

7. the ceramic polyolefin outer sheath and the high-strength halogen-free low-smoke polyolefin ribbon form an inner and outer flame-retardant sheath dual structure, the dielectric strength of the outer sheath is more than or equal to 25kV/mm at normal temperature, the volume resistivity of the outer sheath is more than or equal to 1.0 multiplied by 1014 omega cm, and the outer sheath has the same level of hardness, wear resistance and tear resistance as the low-smoke halogen-free cable material; under the temperature of more than 650 ℃ or flame condition, a complete ceramic-shaped shell can be rapidly generated, the bending strength can reach 10MPa, the dielectric strength is more than 20kV/mm, and the volume resistivity is higher than 5 multiplied by 1013 omega cm; the generated ceramic shell is not cracked or dripped, has excellent electrical isolation performance and excellent oxygen-insulating and heat-insulating effects, can effectively isolate the invasion of high-temperature flame to the inside of a circuit, delays the decomposition of internal materials, avoids the fusing of a conductor in the flame, and ensures the smoothness of a cable line under the condition of fire.

Drawings

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

FIG. 2 is a schematic view of a shielding tape construction;

fig. 3 is a schematic structural diagram of a polyester fiber reinforced composite winding belt.

Detailed Description

The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.

Example 1:

as shown in fig. 1, the utility model provides a rare earth aluminum alloy irradiation phenylene silicon rubber insulation flame-retardant power cable, which comprises a rare earth aluminum alloy conductor 1, can reduce the whole weight of the cable, improve the mobility and the operability of the cable, save time and labor and is convenient to use; the rare earth aluminum alloy conductor is coated with the irradiation phenylene silicon rubber insulating layer 2, and after extrusion, the electron accelerator irradiates to enhance the high temperature resistance, flexibility and tear resistance of the wire core; the shielding belt 3 is coated outside the irradiated phenylene silicon rubber insulating layer, the high-electric calcined argil flame-retardant layer 4 is coated outside the shielding belt, the high-strength halogen-free low-smoke polyolefin ribbon 5 is coated outside the high-electric calcined argil flame-retardant layer, and the polyester fiber reinforced composite winding belt 6 is coated outside the high-strength halogen-free low-smoke polyolefin ribbon, so that the cable has better flexibility, the belt can be tightly attached to the surface of the reticular fiber belt in the winding process, the problem of untight winding is solved, and the corrosion resistance of the cable is favorably ensured; a ceramic polyolefin outer sheath 7 is extruded outside the polyester fiber reinforced composite winding wrapping belt, the dielectric strength of the outer sheath is more than or equal to 25kV/mm at normal temperature, the volume resistivity is more than or equal to 1.0 multiplied by 1014 omega cm, and the outer sheath has the same level of hardness, wear resistance and tear resistance as the low-smoke halogen-free cable material; under the temperature of more than 650 ℃ or flame condition, a complete ceramic-shaped shell can be rapidly generated, the bending strength can reach 10MPa, the dielectric strength is more than 20kV/mm, and the volume resistivity is higher than 5 multiplied by 1013 omega cm; the generated ceramic shell is not cracked or dripped, has excellent electrical isolation performance and excellent oxygen-insulating and heat-insulating effects, can effectively isolate the invasion of high-temperature flame to the inside of a circuit, delays the decomposition of internal materials, avoids the fusing of a conductor in the flame, and ensures the smoothness of a cable line under the condition of fire.

Example 2:

as shown in fig. 2, the shield tape 3 includes a tape base 31, a magnetic hot-melt adhesive layer 32 provided on the surface of the tape base and formed of a magnetic resin composition containing a magnetic powder and a hot-melt adhesive, and a conductive metal layer 33 provided on the back surface of the tape base and formed of a conductive metal, the hot-melt adhesive being formed of an olefin-based resin; can maintain flexibility and bending resistance and exert electromagnetic shielding performance and magnetic shielding performance, so that the cable can not be subjected to electromagnetic interference.

As shown in figure 3, this compound winding band 6 of polyester fiber enhancement mode includes substrate layer 61, adhesive layer 62 and top layer 63, the substrate layer is polyester film layer, top layer for fire-resistant non-woven fabrics layer, adhesive layer are the polyurethane glue film, the parcel has polyester fiber silk 64 in the substrate layer, the substrate layer passes through adhesive layer and top layer complex together for the cable has better compliance, and then guarantees the high strength that the band can tightly paste at winding in-process and does not have steamed low cigarette polyolefin ribbon surface, constitutes dual structure of binding tightly, has overcome the not tight problem of winding, has favorable ensured the corrosion resisting property of cable.

The utility model discloses the concrete application way is many, and the above-mentioned only is the preferred embodiment of the utility model, should point out, to ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also make a plurality of improvements, and these improvements also should be regarded as the utility model discloses a scope of protection.

Claims (4)

1. A rare earth aluminum alloy irradiation phenylene silicon rubber insulation flame-retardant power cable is characterized in that: the high-strength halogen-free low-smoke polyolefin cable tie is characterized by comprising a rare earth aluminum alloy conductor, wherein an irradiation phenylene silicon rubber insulating layer is coated outside the rare earth aluminum alloy conductor, a shielding belt is coated outside the irradiation phenylene silicon rubber insulating layer, a high-electric-property calcined argil flame-retardant layer is coated outside the shielding belt, a high-strength halogen-free low-smoke polyolefin cable tie is coated outside the high-electric-property calcined argil flame-retardant layer, a polyester fiber reinforced composite winding belt is coated outside the high-strength halogen-free low-smoke polyolefin cable tie, and a ceramic polyolefin outer sheath is extruded outside the.

2. The rare earth aluminum alloy irradiated phenylene silicone rubber insulated flame-retardant power cable according to claim 1, characterized in that: the shield tape includes a tape base, a magnetic hot-melt adhesive layer provided on a surface of the tape base and formed of a magnetic resin composition containing a magnetic powder and a hot-melt adhesive, and a conductive metal layer provided on a back surface of the tape base and formed of a conductive metal.

3. The rare earth aluminum alloy irradiated phenylene silicone rubber insulated flame-retardant power cable according to claim 1, characterized in that: the polyester fiber reinforced composite winding belting comprises a substrate layer, an adhesive layer and a surface layer, wherein the substrate layer is a polyester film layer, the surface layer is a fireproof non-woven fabric layer, the adhesive layer is a polyurethane adhesive layer, polyester fiber yarns are wrapped in the substrate layer, and the substrate layer is compounded with the surface layer through the adhesive layer.

4. The rare earth aluminum alloy irradiated phenylene silicone rubber insulated flame-retardant power cable according to claim 2, characterized in that: the hot-melt adhesive is formed of an olefin resin.

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