CN201111979Y - Low-smoke extruded silicone rubber insulated cables for ships - Google Patents

Abstract

The utility model relates to a low-smoke extruded silicon rubber insulated cable for ships, which is characterized in that it comprises an outer sheath (9) extruded from a low-smoke, halogen-free, low-toxic cross-linked polyolefin material, and the outer sheath (9) The inner wall surface of the inner sheath is provided with a braided shielding armor layer (11) and an inner sheath (5) extruded from a low-smoke, halogen-free and low-toxic cross-linked polyolefin material, and a special silicone rubber insulation is arranged inside the inner sheath (5). (3) The wrapped conductor (1), the insulation (3) and the conductor (1) are also provided with a special mica tape laminated wrapping refractory layer (2). The product of the utility model has the characteristics of high working temperature grade, good mechanical performance, soft wire core, strong fire resistance, good flame retardancy and superior safety performance.

Description

Low-smoke extruded silicone rubber insulated cables for ships

technical field

The utility model relates to a low-smoke extruded silicon rubber insulated cable used in various types of warships, river and sea ships, offshore oil platforms and other water building equipment, instruments and instrument energy transmission and signal control.

Background technique

With the rapid development of river, sea and ocean transportation industries and national defense projects, various types of ships and offshore oil platforms are also increasing, and the technical requirements of various types of equipment for cables are increasing. Traditional marine or marine cables are also widely used for insulation of polyvinyl chloride and ethylene propylene rubber. The normal working temperature of this kind of cable is relatively low, generally around 70°C. The mechanical properties, waterproof performance, tear resistance, fire resistance and flame retardancy of cable insulation are poor. When the flame burns, it releases more toxic and harmful smoke, and the content of halogen acid gas is relatively large, which poses a great threat to the health of personnel. The hazards, the secondary damage to important equipment and precision instruments and meters are relatively large, and the oil resistance of the cable sheath is poor, which does not meet the requirements of high safety and high reliability in the harsh environment.

Contents of the invention

In order to solve the above-mentioned problems existing in the traditional marine or ship-used cables, the utility model product provides a higher working temperature level for the marine field, good mechanical properties, soft core, strong fire resistance, good flame retardancy, and superior safety performance. Smoke-free, halogen-free, low-toxicity and environment-friendly JK series marine low-smoke extruded silicone rubber insulated non-watertight control cables and J series marine low-smoke extruded silicone rubber insulated 0.6/1(1.2)kV non-watertight power cables.

The purpose of this utility model is to achieve through the following measures:

The utility model is a low-smoke extruded silicon rubber insulated cable for ships, which is characterized in that it includes an outer sheath 9 extruded from a low-smoke, halogen-free, low-toxic cross-linked polyolefin material, and the inner wall of the outer sheath 9 is made of A braided shielding armor layer 10 and an inner sheath 5 extruded from a low-smoke, halogen-free, low-toxicity cross-linked polyolefin material are provided sequentially from the outside to the inside, and a conductor 1 wrapped by a special silicone rubber insulation 3 is arranged inside the inner sheath 5. Between the insulation 3 and the conductor 1, there is also a special mica tape laminated wrapping refractory layer 2.

The low-smoke extruded silicone rubber insulated cable for ships is characterized in that the braided shielding armor layer 10 is composed of an outer braided shielding armor layer 8, a shielding insulation layer 7 and an inner braided shielding armor layer 6. Or only one layer of braided shielding armor layer 10.

The low-smoke extruded silicone rubber insulated cable for ships is characterized in that the inner braided shielding armor layer 6 and the outer braided shielding armor layer 8 are braided with tinned copper wires.

The low-smoke extruded silicone rubber insulated cable for ships is characterized in that a conductor 1 is wrapped by a refractory layer 2 and an insulation 3 from the inside to the outside to form an insulated wire core, and two or more cores are twisted concentrically. Twisting method is carried out, and then the wrapping layer 4 is formed by wrapping evenly with a tie band, or the wrapping layer 4 is formed by wrapping evenly with a tie band directly on the outside of a core;

The low-smoke extruded silicone rubber insulated cable for ships is characterized in that the special silicone rubber insulation is vulcanized and reinforced with glass fiber braiding.

The low-smoke extruded silicone rubber insulated cable for ships is characterized in that it adopts a concentric twisted conductor 1 of multiple strands of tinned copper wires.

The low-smoke extruded silicone rubber insulated cable for ships is characterized in that the shielding insulating layer 7 is extruded with insulating material or wrapped with insulating tape, the insulating material can be polyolefin material, and the insulating tape can be PP insulating tape.

The low-smoke extruded silicone rubber insulated cable for ships is characterized in that the inner sheath 5 and the outer sheath 9 are cross-linked by electron accelerator irradiation.

The beneficial effects of the utility model:

The product of the utility model adopts a special structure and special materials, and the product has the following characteristics:

(1) Stable and reliable structure: the conductor is concentrically stranded by multiple tinned copper wires, and the stranded structure is tight and stable.

(2) Good fire-resistant performance: special mica tape is used to wrap the refractory layer to improve the fire-resistant performance of the cable, and the product of the silicone rubber insulation itself is silicon dioxide after combustion, which can also play an insulating role.

(3) Good mechanical properties: the silicone rubber insulation is strengthened by glass fiber braiding, thereby improving the mechanical strength of the insulating layer, and the sheath is irradiated and cross-linked, so that the original linear structure is transformed into a three-dimensional structure, thereby improving the sheath layer. Mechanical strength.

(4) Low-smoke, halogen-free and low-toxic: insulation, sheath and filling materials are all made of low-smoke, halogen-free and low-toxic materials. When the cable is burned by flame, the amount of smoke is small, and the release of acid gas and toxic gas is small.

(5) Good flame retardant performance: the cable sheath is made of special materials, which form a hard shell when burning, which hinders the intrusion of oxygen and the precipitation of the decomposition gas of the sheath material, prevents the flame from continuing to burn, and enables the cable to meet the requirements of Class A vertical bunching combustion.

(6) Heat-resistant oil: the sheath can be dipped in 20# engine oil at 121±2°C for 18 hours, and the tensile strength and fracture growth rate are compared with those before dipping, and the retention rate is ≥50%.

(7) Tear resistance: The sheath is made of special cross-linked polyolefin material, cross-linked by irradiation, so that the molecules are entangled and adhered to each other, so that the sheath has strong tear resistance.

(8) Strong anti-interference ability: Tinned copper wire braided overall shielding is used outside the cable core, which improves the anti-interference ability.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a structural schematic diagram of Embodiment 2 of the present utility model.

Fig. 3 is a schematic structural view of Embodiment 3 of the present utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

Example 1

Referring to Fig. 1, the product of the present invention includes an outer sheath 9 extruded from a low-smoke, halogen-free, low-toxicity cross-linked polyolefin material, and a braided armor layer 10 and a low-smoke, halogen-free, low-toxicity layer are arranged on the inner wall of the outer sheath 9. The inner sheath 5 is extruded from cross-linked polyolefin material, and the inner sheath 5 is provided with a conductor 1 wrapped by a special silicone rubber insulating layer 3, and a special mica tape laminated wrapping is also arranged between the insulating layer 3 and the conductor 1 Refractory layer 2.

This embodiment can be manufactured through the following process:

(1) Multi-strand tinned copper wire concentric stranded conductor 1 is adopted;

(2) Special mica tape is used to evenly wrap the refractory layer 2 outside the conductor 1;

(3) The refractory layer 2 is extruded and wrapped with a silicon rubber insulating layer 3 and vulcanized, and the insulating layer 3 is reinforced with glass fiber braiding;

(4) A conductor 1 is wrapped by refractory layer 2 and insulation 3 from the inside to the outside to form an insulated wire core. Two or more cores are twisted according to the concentric twisting method and then wrapped evenly with a tightening tape. The wrapping layer 4 or the outer part of a core is directly wrapped with a tightening tape to form the wrapping layer 4;

(5) The inner sheath 5 is extruded by low-smoke, halogen-free and low-toxic cross-linked polyolefin material, and the inner sheath 5 is irradiated and cross-linked by special equipment;

(6) Tinned copper wire braided armor is used after cable formation;

(7) Extrude the outer sheath 9 with low-smoke, halogen-free and low-toxicity cross-linked polyolefin material outside the core wire, and irradiate and cross-link the outer sheath 9 through special equipment.

Example 2

In conjunction with Fig. 2, the product of the utility model includes an outer sheath 9 extruded from a low-smoke, halogen-free, low-toxicity cross-linked polyolefin material, and a braided shielding armor layer 10 is provided on the inner wall of the outer sheath 9, and the braided shielding armor layer 10 A conductor 1 wrapped by a special silicone rubber insulation 3 is arranged inside, and a special mica tape laminated wrapping refractory layer 2 is arranged between the insulation 3 and the conductor 1 .

This embodiment can be manufactured through the following process:

(1) Multi-strand tinned copper wire concentric stranded conductor 1 is adopted;

(2) Special mica tape is used to evenly wrap the refractory layer 2 outside the conductor 1;

(3) The refractory layer 2 is extruded and wrapped with a silicon rubber insulating layer 3 and vulcanized, and the insulating layer 3 is reinforced with glass fiber braiding;

(4) A conductor 1 is wrapped by refractory layer 2 and insulation 3 from the inside to the outside to form an insulated wire core. Two or more cores are twisted according to the concentric twisting method and then wrapped evenly with a tightening tape. The wrapping layer 4 or the outer part of a core is directly wrapped with a tightening tape to form the wrapping layer 4;

(5) Tinned copper wire braided armor is used after cable formation;

(6) The outer sheath 9 is extruded by low-smoke, halogen-free and low-toxicity cross-linked polyolefin material outside the core wire, and the outer sheath 9 is irradiated and cross-linked by special equipment.

Example 3

Combined with Figure 3, the utility model product includes an outer sheath 9 extruded from a low-smoke, halogen-free, low-toxic cross-linked polyolefin material, and an outer braided shielding armor layer 8 and a shielding insulating layer 7 are sequentially arranged on the inner wall of the outer sheath 9 And the inner braided shielding armor layer 6 and the inner sheath 5 extruded from low-smoke, halogen-free and low-toxicity cross-linked polyolefin material, the inner sheath 5 is provided with a conductor 1 wrapped by a special silicone rubber insulation 3, and the insulation 3 is connected to the conductor 1 is also provided with a special mica tape laminated wrapping refractory layer 2.

This embodiment can be manufactured through the following process:

(1) Multi-strand tinned copper wire concentric stranded conductor 1 is adopted;

(2) Special mica tape is used to evenly wrap the refractory layer 2 outside the conductor 1;

(3) The refractory layer 2 is extruded and wrapped with a silicon rubber insulating layer 3 and vulcanized, and the insulating layer 3 is reinforced with glass fiber braiding;

(4) A conductor 1 is wrapped by refractory layer 2 and insulation 3 from the inside to the outside to form an insulated wire core. Two or more cores are twisted according to the concentric twisting method and then wrapped evenly with a tightening tape. The wrapping layer 4 or the outer part of a core is directly wrapped with a tightening tape to form the wrapping layer 4;

(5) The inner sheath 5 is extruded by low-smoke, halogen-free and low-toxic cross-linked polyolefin material, and the inner sheath 5 is irradiated and cross-linked by special equipment;

(7) Tinned copper wire braided inner braided shielding armor layer 6 is used after cabling;

(8) A double-layer shielding structure is adopted, and the shielding insulation layer 7 between the inner and outer braided shielding armor layers is wrapped with insulating tape or extruded with insulating material;

(9) Tinned copper wire is used to braid the outer braided shielding armor layer 8;

(10) Extrude the outer sheath 9 with low-smoke, halogen-free and low-toxicity cross-linked polyolefin material outside the core wire, and irradiate and cross-link the outer sheath 9 through special equipment.

Claims (9)

1. A low-smoke extruded silicone rubber insulated cable for ships, which is characterized in that it includes an outer sheath (9) extruded from a low-smoke, halogen-free, low-toxicity cross-linked polyolefin material, inside the outer sheath (9) The wall surface is successively provided with a braided shielding armor layer (10) and an inner sheath (5) extruded from low-smoke, halogen-free, low-toxic cross-linked polyolefin material, and inside the inner sheath (5) is insulated by special silicone rubber (3 ) wrapped conductor (1), and a special mica tape laminated wrapping refractory layer (2) is also arranged between the insulation (3) and the conductor (1). 2. The low-smoke extruded silicone rubber insulated cable for ships according to claim 1, characterized in that the braided shielding armor layer (10) braids the shielding armor layer (8) from outside to inside, and the shielding insulation layer (7) and the inner braided shielding armor layer (6) constitute or only one layer of braided shielding armor layer (10). 3. The low-smoke extruded silicone rubber insulated cable for ships according to claim 2, characterized in that the inner braided shielding armor layer (6) and the outer braided shielding armor layer (8) are braided with tinned copper wires. 4. The low-smoke extruded silicone rubber insulated cable for ships according to claim 1, characterized in that a conductor (1) is wrapped by refractory layer (2) and insulation (3) from inside to outside to form insulation Wire cores, two cores or multiple cores are twisted according to the concentric stranding method, and then wrapped evenly with a strap to form a wrapping layer (4) or the outside of one core is directly wrapped with a strap to form a wrapping layer ( 4). 5. The low-smoke extruded silicone rubber insulated cable for ships according to claim 1, characterized in that the special silicone rubber insulation (3) is vulcanized and reinforced with glass fiber braiding. 6. The low-smoke extruded silicone rubber insulated cable for ships according to claim 1, characterized in that it adopts multiple tinned copper wire concentric stranded conductors (1). 7. The low-smoke extruded silicone rubber insulated cable for ships according to claim 1, characterized in that the shielding insulating layer (7) is extruded with insulating material or wrapped with insulating tape. 8. The low-smoke extruded silicone rubber insulated cable for ships according to claim 7, characterized in that the insulating material is polyolefin material, and the insulating tape is PP insulating tape. 9. The low-smoke extruded silicone rubber insulated cable for ships according to claim 1, characterized in that the inner sheath (5) and the outer sheath (9) are cross-linked by electron accelerator irradiation.

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