CN214624483U

CN214624483U - Compact small-outer-diameter anti-interference shielded cable

Info

Publication number: CN214624483U
Application number: CN202121209236.8U
Authority: CN
Inventors: 张林锐; 王经逸; 程斌; 华健; 华洪彬
Original assignee: Wuxi Huamei Cable Co ltd
Current assignee: Wuxi Huamei Cable Co ltd
Priority date: 2020-09-07
Filing date: 2021-06-01
Publication date: 2021-11-05
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses an anti-interference shielded cable of little external diameter of compact, include: comprises at least three groups of inner core conductors; a polyester tape winding layer is wound on the outer side of the inner core conductor; an XLPE insulating layer is sleeved on the outer side of the polyester tape winding layer; a flexible shielding layer is wrapped outside the XLPE insulating layer; the outer side of the flexible shielding layer is sleeved with a reinforcing protection mechanism; the outer sides of each two groups of reinforcing protection mechanisms are connected with filling strips, the outer sides of the three groups of filling strips are formed into a circular section through rolling, and the outer sides of the three groups of filling strips are sleeved with XLPE insulating sheaths to be fixed; supports formed by high-modulus tough fiber composite plastics are arranged outside the XLPE insulating sheath and are uniformly distributed in the circumferential direction; and a PVC outer sheath is sleeved outside the XLPE insulating sheath. The utility model discloses a compact and the external diameter of cable structure is little, and shielding performance and insulating nature are good.

Description

Compact small-outer-diameter anti-interference shielded cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a small external diameter anti-interference shielded cable of compact.

Background

Electric cables, also known as cables, are commonly used in industrial production and life for transmitting and conducting electricity or signals, including power cables and data cables. The power cable is divided into a high-voltage cable, a medium-voltage cable and a low-voltage cable, interference and radiation are easily generated in the laying and conducting processes, and particularly under the harsh conditions of using conditions of a machine room, a server and the like, on one hand, the cable is expected to achieve basic fire resistance, temperature resistance, good strength and toughness and be capable of realizing efficient power or signal transmission, and on the other hand, the cable is also expected to be light in weight and compact in design because of wide use rate and large weight.

SUMMERY OF THE UTILITY MODEL

To the deficiency of prior art, an object of the utility model is to provide an anti-interference shielded cable of little external diameter of compact, include: the nickel-plated steel wire comprises at least three groups of inner core conductors, wherein every two inner core conductors are arranged in a tangent mode and are composed of a plurality of strands of nickel-plated alloys;

a polyester tape winding layer is wound on the outer side of the inner core conductor, and the inner core conductor is fixedly formed into a circular cross section shape;

an XLPE insulating layer is sleeved on the outer side of the polyester tape winding layer;

a flexible shielding layer is wrapped outside the XLPE insulating layer; the flexible shielding layer is a mixed weaving layer of metal wires, aramid fibers and glass fiber wires; the mixed weaving layer takes a metal wire mesh as a substrate, and aramid fibers and glass fibers are woven on the metal wire mesh in a staggered mode at a preset weaving angle; presetting a weaving angle between 55 and 75 degrees;

the outer side of the flexible shielding layer is sleeved with a reinforcing protection mechanism, and the reinforcing protection mechanism comprises a PVC inner sheath fixedly sleeved on the outer side of the flexible shielding layer, an alloy lead sheath sleeved on the outer side of the PVC inner sheath and a plastic reinforcing protection layer sleeved on the outer side of the alloy lead sheath;

the outer sides of each two groups of reinforcing protection mechanisms are connected with filling strips, the outer sides of the three groups of filling strips are formed into a circular section through rolling, and the outer sides of the three groups of filling strips are sleeved with XLPE insulating sheaths to be fixed;

supports formed by high-modulus tough fiber composite plastics are arranged outside the XLPE insulating sheath and are uniformly distributed in the circumferential direction; and a PVC outer sheath is sleeved outside the XLPE insulating sheath.

Preferably, the plastic reinforced protective layers are tangent to each other two by two and contact with each other, and the filling strips abut against the plastic reinforced protective layers.

Preferably, the side wall of the filling strip, which is in contact with the plastic reinforced protective layer, comprises two arc-shaped abutting parts, and one end of the filling strip, which is far away from the plastic reinforced protective layer, is in a fan shape. Preferably, the filler strip is a low-halogen or halogen-free filler strip.

Preferably, the inner core conductor comprises a central conductor and a plurality of outer conductor layers stranded outside the central conductor, the diameter of a copper wire of the central conductor is 2mm, and the diameter of the copper wire in the outer conductor layers is 1 mm.

Preferably, the flexible shielding layer is a mixed weaving layer of copper wires, aramid fibers and glass fiber wires, wherein the copper wires account for more than 80%. Wherein the diameter of the copper wire is 0.5 mm.

Preferably, the thickness of the polyester tape winding layer is 0.8-1 mm; the thickness of the XLPE insulating layer is 1-2 mm; the thickness of the flexible shielding layer is 1-2 mm; the thickness of the PVC inner sheath is 1-2mm, and the thickness of the alloy lead sheath is 0.8-1 mm; the thickness of the plastic reinforced protective layer is 1 mm.

Preferably, the high-modulus toughness fiber composite plastic is carbon fiber, PBO fiber or silicon carbide fiber with the elastic modulus exceeding 10 Gpa.

Preferably, the aramid fiber yarns and the glass fiber yarns are all woven in a bundle form, the median value of the diameters of the single yarns of the aramid fiber yarns and the glass fiber yarns is 15-20 micrometers, and the bundle diameter of the single aramid fiber yarns and the glass fiber yarns is 0.4-0.5 mm.

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

the utility model discloses a cable can strengthen the intensity that the inner core conductor used under reinforcing protection mechanism's use, reduces the influence of outside collision to the inner core conductor, further uses under the protection that the outer layer supported, can further strengthen joint strength and outside support intensity between three inner core conductors of group, realizes the compactness of cable. The utility model discloses a good bending resistance and fatigue resistance have when the inside compound shielding layer that sets up of cable plays the effect of reinforcing anti-electromagnetic radiation interference, and compact and the external diameter of cable structure is little, and shielding performance and insulating nature are good.

Drawings

Fig. 1 is a schematic cross-sectional view of the compact small-outer-diameter anti-interference shielded cable of the present invention;

fig. 2 is the utility model provides a side section view of anti-interference shielded cable of small external diameter of compact.

Fig. 3 is a schematic diagram of the flexible shielding layer provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The compact small-outer-diameter anti-interference shielded cable combined with the embodiment shown in fig. 1-2 comprises at least three groups of inner core conductors 1, wherein the inner core conductors 1 are arranged in a tangent mode in pairs and are composed of a plurality of strands of nickel-plated alloy. Preferably, the inner core conductor 1 includes a central conductor and a plurality of outer conductor layers stranded outside the central conductor, the diameter of the copper wire of the central conductor is 2mm, and the diameter of the copper wire in the outer conductor layers is 1 mm.

The outer side of the inner core conductor 1 is wrapped with a polyester tape wrapping layer 2, and the inner core conductor 1 is fixed into a circular cross section shape.

The outer side of the polyester tape winding layer 2 is sleeved with an XLPE insulating layer 3.

A flexible shielding layer 7 is wrapped outside the XLPE insulating layer 3; the flexible shielding layer 7 is a mixed weaving layer of metal wires, aramid fibers and glass fiber wires.

The outside of flexible shielding layer 3 has cup jointed the reinforcing protection mechanism, and reinforcing protection mechanism includes fixed cover at the PVC inner sheath 8 in the flexible shielding layer 7 outside, overlaps the alloy lead cover 9 that establishes in the PVC inner sheath 8 outside and overlaps the plastics reinforcing protection layer 10 that establishes in the alloy lead cover 9 outside.

The outer sides of every two groups of reinforcing protection mechanisms are connected with filling strips 4, the outer sides of the three groups of filling strips 4 form a circular section through rolling and wrapping, and the outer sides of the three groups of filling strips are sleeved with XLPE insulating sheaths 12 to be fixed.

The exterior of the XLPE insulating sheath 12 is provided with supports 13 formed by high-modulus tough fiber composite plastics, and the supports are uniformly distributed in the circumferential direction. Preferably, the high-modulus toughness fiber composite plastic is carbon fiber, PBO fiber or silicon carbide fiber with the elastic modulus exceeding 10 Gpa.

The exterior of the XLPE insulating sheath 12 is sleeved with a PVC outer sheath 14.

With reference to fig. 1 and 2, the plastic reinforced protective layers 10 are tangent to each other two by two and contact with each other, and the filler strips 4 abut against the plastic reinforced protective layers 10. Preferably, the plastic reinforced protective layer 10 may employ a ring-shaped support layer formed of a silicon rubber material. The silicon rubber material doped with a small amount of white carbon black for modification is preferably adopted, the elastomer of the silicon rubber material is used for supporting each inner core conductor and each outer wrapping layer, and the silicon rubber material can keep higher surface strength and toughness at high temperature and plays roles in reinforcement and protection.

The side wall of the filler strip 4 contacting the plastic reinforced protective layer 10 comprises two arc-shaped abutting parts, and one end of the filler strip 4 away from the plastic reinforced protective layer 10 is fan-shaped.

Preferably, the flexible shielding layer 7 is a mixed weaving layer of copper wires, aramid fibers and glass fibers, wherein the copper wires account for more than 80%. The diameter of the copper wire is 0.5 mm.

In the preferred embodiment, the structure of the mixed-woven layer takes a metal wire mesh 7-1 as a substrate, and aramid fibers 7-2 and glass fibers 7-3 are woven on the metal wire mesh 7-1 in a staggered mode at a preset weaving angle; the preset braiding angle is between 55-75 deg.. Because aramid fiber silk 7-2 and glass fiber silk 7-3's monofilament diameter is less in the utility model discloses an in the mixed layer structure of weaving, aramid fiber silk and glass fiber silk are all woven with the form of beam forming, and every a branch of silk contains the monofilament more than 200.

In an alternative embodiment, the aramid filaments and glass filaments may be commercially available filaments, such as AGY or VIP composite glass filaments, having a median diameter of 15-20 microns and a single bundle diameter of 0.4-0.5 mm.

Preferably, the thickness of the polyester tape winding layer 2 is 0.8-1mm, the thickness of the XLPE insulating layer 3 is 1-2mm, the thickness of the flexible shielding layer 7 is 1-2mm, the thickness of the PVC inner sheath 8 is 1-2mm, the thickness of the alloy lead sheath 9 is 0.8-1mm, and the thickness of the plastic reinforced protective layer 10 is 1 mm.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The compact small-outer-diameter anti-interference shielded cable is characterized by comprising at least three groups of inner core conductors (1), wherein the inner core conductors (1) are arranged in a pairwise tangent mode and are composed of a plurality of strands of nickel-plated alloy;

a polyester tape winding cladding layer (2) is wound on the outer side of the inner core conductor (1), and the inner core conductor (1) is fixedly formed into a circular cross section shape;

an XLPE insulating layer (3) is sleeved on the outer side of the polyester tape winding cladding (2);

a flexible shielding layer (7) is wrapped outside the XLPE insulating layer (3); the flexible shielding layer (7) is a mixed weaving layer of metal wires, aramid fibers and glass fiber wires; the mixed weaving layer takes a metal wire mesh as a substrate, and aramid fibers and glass fibers are woven on the metal wire mesh in a staggered mode at a preset weaving angle; presetting a weaving angle between 55 and 75 degrees;

the outer side of the flexible shielding layer (7) is sleeved with a reinforcing protection mechanism, and the reinforcing protection mechanism comprises a PVC inner sheath (8) fixedly sleeved on the outer side of the flexible shielding layer (7), an alloy lead sleeve (9) sleeved on the outer side of the PVC inner sheath (8) and a plastic reinforcing protection layer (10) sleeved on the outer side of the alloy lead sleeve (9);

the outer sides of every two groups of reinforced protection mechanisms are connected with filling strips (4), the outer sides of the three groups of filling strips (4) form a circular section through rolling, and are sleeved by XLPE insulating sheaths (12) to be fixed on the outer sides of the filling strips;

supports (13) formed by high-modulus tough fiber composite plastics with the elastic modulus exceeding 10Gpa are arranged outside the XLPE insulating sheath (12) and are uniformly distributed in the circumferential direction;

and a PVC outer sheath (14) is sleeved outside the XLPE insulating sheath (12).

2. The compact small-outer-diameter anti-interference shielded cable according to claim 1, wherein the plastic reinforced protective layers (10) are tangent two by two and contact with each other, and the filler strips (4) are abutted on the plastic reinforced protective layers (10).

3. The compact small-outer-diameter anti-interference shielded cable according to claim 1, wherein the side wall of the filler strip (4) contacting the plastic reinforced protective layer (10) comprises two arc-shaped abutting parts, and the end of the filler strip (4) far away from the plastic reinforced protective layer (10) is fan-shaped.

4. The compact small-outer-diameter anti-interference shielded cable according to claim 1, wherein the inner core conductor (1) comprises a central conductor and a plurality of outer conductor layers stranded outside the central conductor, the diameter of copper wires of the central conductor is 2mm, and the diameter of copper wires in the outer conductor layers is 1 mm.

5. The compact small-outer-diameter anti-interference shielded cable according to claim 1, wherein the aramid filaments and the glass fibers are all woven in a bundle form, the median value of the diameters of the filaments of the aramid filaments and the glass fibers is 15-20 micrometers, and the bundle diameter of a single bundle of the aramid filaments and the glass fibers is 0.4-0.5 mm.

6. The compact small outer diameter antijam shielded cable of claim 1, characterized in that the thickness of said polyester tape winding cladding (2) is 0.8-1mm, and the thickness of said XLPE insulating layer (3) is 1-2 mm.

7. The compact small outer diameter anti-interference shielded cable according to claim 1, characterized in that the thickness of the flexible shielding layer (7) is 1-2 mm.

8. The compact small outer diameter antijam shielded cable of claim 1, characterized in that the thickness of the PVC inner sheath (8) is between 1-2 mm.

9. The compact small-outer-diameter anti-interference shielded cable according to claim 1, characterized in that the thickness of the alloy lead sheath (9) is 0.8-1 mm.

10. The compact small outer diameter antijam shielded cable of claim 1, characterized in that the thickness of said plastic reinforced protective layer (10) is 1 mm.