CN215069366U

CN215069366U - Low-temperature-resistant flame-retardant wire cable

Info

Publication number: CN215069366U
Application number: CN202121062207.3U
Authority: CN
Inventors: 李修成
Original assignee: Shenzhen Lianying Communication Co ltd
Current assignee: Shenzhen Lianying Communication Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-12-07
Anticipated expiration: 2031-05-18

Abstract

The utility model relates to a fire-retardant wire and cable of low temperature resistant belongs to wire and cable technical field. Comprises a plastic protective layer, a copper core conductor and a fixing ring; be equipped with the flexure strip in the plastic sheath, be equipped with first spring between solid fixed ring and the flexure strip, first backup pad is connected, the plastic sheath outside is equipped with the heat-sink shell, be connected through being equipped with the connecting piece between heat-sink shell and the copper core conductor, the connecting piece is by the support column, the second backup pad is constituteed, the heat-sink shell outside is equipped with the inoxidizing coating, the inoxidizing coating is by fire-retardant layer, separate the oxygen layer and constitute, the fire-retardant layer outside is equipped with first armor, the second armor, first armor, second armor one end all is equipped with elastic bulge, the second armor outside is equipped with the waterproof layer, be equipped with the heat preservation cotton between flexure strip and the copper core conductor. The utility model provides a fire-retardant wire and cable of low temperature resistant can effectual reduction external environment to the influence of cable, improve its resistant high low temperature performance to can also improve the bulk strength of cable.

Description

Low-temperature-resistant flame-retardant wire cable

Technical Field

The utility model relates to a fire-retardant wire and cable of low temperature resistant belongs to wire and cable technical field.

Background

Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has interior circular telegram, the characteristics of external insulation, and the simple structure of current cable, the general single outside fire-retardant structure that possesses, fire-retardant performance is relatively poor, and secondly its resistant high low temperature performance is relatively poor, leads to its scope of use lower, so can not satisfy user's demand.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a fire-retardant wire and cable of low temperature resistant can effectually reduce the influence of external environment to the cable, reduces its temperature and runs off, and its high low temperature resistant performance of effectual improvement to can also improve the bulk strength of cable, increase its ability of pulling of anti dragging.

The utility model provides a low temperature resistant and flame retardant wire cable, which comprises a plastic protective layer, a copper core conductor and a fixing ring; an elastic sheet is arranged in the plastic protective layer, the copper core conductor is positioned on the elastic sheet, a first spring and a first supporting plate are arranged between the fixing ring and the elastic sheet and are connected, the outer side of the copper core conductor is coated with a polyvinyl chloride insulating layer, the outer side of the plastic protective layer is provided with a heat absorbing layer, the heat absorption layer is connected with the copper core conductor through a connecting piece, the connecting piece consists of a supporting column and a second supporting plate, the second supporting plate is connected with the supporting column through a second spring, a protective layer is arranged on the outer side of the heat absorption layer, the protective layer consists of a flame-retardant layer and an oxygen-isolating layer, a first armor layer and a second armor layer are arranged outside the flame-retardant layer, the first armor layer and the second armor layer are respectively provided with an elastic bulge at one end, a waterproof layer is arranged on the outer side of the second armor layer, and heat insulation cotton is arranged between the elastic sheet and the copper core conductor.

The shape of the elastic sheet is arc, 4 elastic sheets are arranged in the plastic protective layer, and the 4 elastic sheets are circumferentially distributed in the plastic protective layer.

The fixing ring is provided with 4 first springs, the number of the first springs is 4, the first springs are located on the circumference of the fixing ring and are distributed and correspond to the elastic sheet, the first supporting plate is located at one end, close to the elastic sheet, of the first springs, and the shape of the first supporting plate is an arc plate corresponding to the radian of the elastic sheet.

The plastic protective layer is provided with a first opening corresponding to the supporting column, the supporting column penetrates through the first opening to be connected with the heat absorption layer, and the second supporting plate is an arc-shaped plate corresponding to the copper core conductor.

The flame-retardant layer and the oxygen-barrier layer are tightly attached, the thickness of the flame-retardant layer is 2-3.5 mm, and the thickness of the oxygen-barrier layer is 0.5-1 mm.

The elastic bulge is located the corresponding one end of first armor, second armor, all be equipped with a plurality of elastic bulge on first armor, the second armor, it is a plurality of the elastic bulge is dislocation emission on first armor, the second armor.

The utility model has the advantages that:

the utility model provides a fire-retardant wire and cable of low temperature resistant can effectually reduce the external environment to the influence of cable, reduces its temperature and runs off, and its high low temperature resistant performance of effectual improvement to can also improve the bulk strength of cable, increase its ability of pulling of anti dragging.

Drawings

Fig. 1 is the utility model relates to a low temperature resistant fire-retardant wire and cable's sectional structure schematic diagram.

Fig. 2 is the structure diagram of the I-position of the low-temperature resistant and flame-retardant electric wire and cable of the present invention.

(1, plastic sheath, 2, copper core conductor, 3, fixed ring, 4, elastic sheet, 5, first spring, 6, first supporting plate, 7, polyvinyl chloride insulating layer, 8, heat absorbing layer, 9, supporting column, 10, second supporting plate, 11, second spring, 12, flame retardant layer, 13, first armor layer, 14, second armor layer, 15, elastic bulge, 16, heat preservation cotton, 17, oxygen isolation layer)

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 2: the utility model provides a low temperature resistant and flame retardant wire cable, which comprises a plastic protective layer 1, a copper core conductor 2 and a fixing ring 3; the plastic sheath 1 is internally provided with an elastic sheet 4, the copper core conductor 2 is positioned on the elastic sheet 4, a first spring 5 and a first supporting plate 6 are arranged between the fixing ring 3 and the elastic sheet 4 and connected, the outer side of the copper core conductor 2 is coated with a polyvinyl chloride insulating layer 7, the outer side of the plastic sheath 1 is provided with a heat absorbing layer 8, the heat absorbing layer 8 is connected with the copper core conductor 2 through a connecting piece, the connecting piece consists of a supporting column 9 and a second supporting plate 10, the second supporting plate 10 is connected with the supporting column 9 through a second spring 11, the outer side of the heat absorbing layer 8 is provided with a protective layer, the protective layer consists of a flame retardant layer 12 and an oxygen barrier 17, the outer side of the flame retardant layer 12 is provided with a first armor layer 13 and a second armor layer 14, one end of each of the first armor layer 13 and the second armor layer 14 is provided with an elastic bulge 15, and the outer side of the second armor layer 14 is provided with a waterproof layer, and heat insulation cotton 16 is arranged between the elastic sheet 4 and the copper core conductor 2.

The utility model discloses in 4 shapes of flexure strip are the arc, be equipped with 4 flexure strips 4 in the plastic sheath 1, 4 the flexure strip is located plastic sheath 1 and is the circumference and distributes.

The utility model discloses well solid fixed ring is equipped with 4 first springs 5 on 3, 4 first spring 5 is located solid fixed ring 3 circumference and distributes and corresponding with flexure strip 4, first backup pad 6 is located first spring 5 and is close to 4 one ends of flexure strip, 6 shapes of first backup pad are the arc corresponding with 4 radians of flexure strip.

The utility model discloses be equipped with on the well plastic sheath 1 with the corresponding first opening of support column 9, support column 9 runs through first opening and is connected with heat-sink shell 8, second backup pad 10 is the arc corresponding with copper core conductor 2.

The utility model discloses well fire-retardant layer 12, separate and closely laminate between the oxygen layer 17, fire-retardant layer 12 thickness is 2-3.5 mm, it is 0.5-1 mm to separate oxygen layer 17 thickness.

The utility model discloses well elastic bulge 15 is located the corresponding one end of first armor 13, second armor 14, all be equipped with a plurality of elastic bulge 15 on first armor 13, the second armor 14, it is a plurality of elastic bulge 15 is the dislocation and discharges on first armor 13, the second armor 14.

The working principle is as follows: in the electric wire and cable, the corresponding polyvinyl chloride insulating layer 7 and the waterproof layer are arranged, so that the electric wire and cable has insulating and waterproof performances and high practicability, the copper core conductor 2 is positioned in the elastic sheet 4, the fixing ring 3 is connected through the first spring 5 and the first supporting plate 6, the elastic sheet 4 separates 4 copper core conductors 2 in the plastic protective layer 1 to enable the copper core conductors not to influence each other, when the electric cable is extruded, the elastic sheet 4 begins to deform, the first spring 5 begins to bear force to offset the force for deforming the elastic sheet 4, the copper core conductor 2 is further protected, the heat absorption layer 8 is connected with the copper core conductor 2 through the connecting piece, the second spring 11 and the supporting column 9 are made of heat conducting materials, the supporting column 9 is connected with the second supporting plate 10 through the second spring 11, and the second supporting plate 10 can ensure that the copper core conductor 2 is also contacted with the second supporting plate 10 when the electric cable is bent, the flame-retardant cotton 12 and the oxygen insulation layer 17 are attached to each other, so that cable combustion can be effectively prevented, when the cable is impacted outside, the elastic protrusions 15 on the first armor layer 13 and the second armor layer 14 begin to extrude each other to extrude the impact, and the heat insulation cotton 16 can insulate the copper core conductor 2 at low temperature.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a fire-retardant wire and cable of low temperature resistant, its characterized in that: comprises a plastic protective layer (1), a copper core conductor (2) and a fixed ring (3); be equipped with flexure strip (4) in plastic sheath (1), copper core conductor (2) are located flexure strip (4), it is connected to be equipped with first spring (5), first backup pad (6) between solid fixed ring (3) and flexure strip (4), copper core conductor (2) outside cladding has polyvinyl chloride insulating layer (7), the plastic sheath (1) outside is equipped with heat-sink shell (8), be connected through being equipped with the connecting piece between heat-sink shell (8) and copper core conductor (2), the connecting piece comprises support column (9), second backup pad (10), be connected through being equipped with second spring (11) between second backup pad (10) and support column (9), the heat-sink shell (8) outside is equipped with the inoxidizing coating, the inoxidizing coating comprises flame retardant coating (12), oxygen barrier (17), flame retardant coating (12) outside is equipped with first armor (13), The waterproof copper core is characterized by comprising a second armor layer (14), wherein elastic protrusions (15) are arranged at one ends of the first armor layer (13) and the second armor layer (14), a waterproof layer is arranged on the outer side of the second armor layer (14), and heat insulation cotton (16) is arranged between the elastic sheet (4) and the copper core conductor (2).

2. The low-temperature-resistant flame-retardant electric wire and cable according to claim 1, wherein: the shape of the elastic piece (4) is arc-shaped, 4 elastic pieces (4) are arranged in the plastic protective layer (1), and the elastic pieces are circumferentially distributed in the plastic protective layer (1).

3. The low-temperature-resistant flame-retardant electric wire and cable according to claim 1, wherein: it is equipped with 4 first spring (5), 4 on solid fixed ring (3) first spring (5) are located solid fixed ring (3) circumference and distribute and corresponding with flexure strip (4), first backup pad (6) are located first spring (5) and are close to flexure strip (4) one end, first backup pad (6) shape is the arc corresponding with flexure strip (4) radian.

4. The low-temperature-resistant flame-retardant electric wire and cable according to claim 1, wherein: the plastic protective layer (1) is provided with a first opening corresponding to the supporting column (9), the supporting column (9) penetrates through the first opening to be connected with the heat absorption layer (8), and the second supporting plate (10) is an arc-shaped plate corresponding to the copper core conductor (2).

5. The low-temperature-resistant flame-retardant electric wire and cable according to claim 1, wherein: the flame-retardant layer (12) and the oxygen-isolating layer (17) are tightly attached, the thickness of the flame-retardant layer (12) is 2-3.5 mm, and the thickness of the oxygen-isolating layer (17) is 0.5-1 mm.

6. The low-temperature-resistant flame-retardant electric wire and cable according to claim 1, wherein: elastic bulge (15) are located the corresponding one end of first armor (13), second armor (14), all be equipped with a plurality of elastic bulge (15) on first armor (13), second armor (14), and are a plurality of elastic bulge (15) are the dislocation and discharge on first armor (13), second armor (14).