阅读说明：本技术 一种高阻燃耐火型抗电磁屏蔽计算机仪表电缆 (High flame-retardant fire-resistant electromagnetic shielding-resistant computer instrument cable ) 是由 邵文贞 黄少成 汪晓林 缪鹏生 肖含生 王启明 杭后志 于 2021-09-13 设计创作，主要内容包括：本发明公开了一种高阻燃耐火型抗电磁屏蔽计算机仪表电缆,包括由内至外依次设置的缆芯、定位层、防火阻燃层以及外护套层,其中,所述缆芯有数根控制线芯绞合制成,控制线芯包括铝合金导体,铝合金导体外部挤包有绝缘层。本发明电缆可在相邻防火单体处发生弯曲,电缆可进行收卷,便于运输,在未发生火灾时,缆芯的热量可从相邻弧形防火片间隙处散热至外界,而发生火灾时,使得电缆外部温度升高,此时遇热膨胀杆受热发生膨胀,使得多个弧形防火片7同步向缆芯移动并挤压带体,直至多个弧形防火片相邻端相互接触,形成环状防火隔层,阻止火势蔓延至电缆的缆芯,且通过这种设计,在燃烧时没有腐蚀性和毒性物质产生,无污染,绿色环保。(The invention discloses a high-flame-retardant fire-resistant electromagnetic shielding computer instrument cable which comprises a cable core, a positioning layer, a fire-retardant layer and an outer sheath layer which are sequentially arranged from inside to outside, wherein the cable core is formed by stranding a plurality of control wire cores, each control wire core comprises an aluminum alloy conductor, and an insulating layer is extruded outside the aluminum alloy conductor. The cable can be bent at the adjacent fireproof monomers, the cable can be wound and is convenient to transport, when a fire disaster does not happen, the heat of the cable core can be radiated to the outside from the gap between the adjacent arc-shaped fireproof sheets, when the fire disaster happens, the external temperature of the cable rises, the thermal expansion rod is heated to expand, the plurality of arc-shaped fireproof sheets 7 synchronously move towards the cable core and extrude the belt body until the adjacent ends of the plurality of arc-shaped fireproof sheets are contacted with each other to form the annular fireproof interlayer, so that the fire is prevented from spreading to the cable core of the cable, and through the design, no corrosive and toxic substances are generated during combustion, so that the cable is pollution-free and environment-friendly.)

1. A high-flame-retardant fire-resistant electromagnetic shielding computer instrument cable is characterized by comprising a cable core, a positioning layer, a fireproof flame-retardant layer, a tinned copper wire woven sub-shielding layer (8), an aluminum foil separating belt (9) and an outer sheath layer (1) which are sequentially arranged from inside to outside, wherein the cable core is formed by stranding a plurality of control wire cores (2), each control wire core (2) comprises an aluminum alloy conductor (21), and an insulating layer (22) is extruded outside the aluminum alloy conductor (21);

the positioning layer comprises a belt body (3), and the inside of the belt body (3) is hollow and is spirally wound on the outer side of the cable core along the length direction of the cable;

the fireproof flame-retardant layer comprises fireproof single bodies (4) which are uniformly arranged on the outer side of the cable core along the length direction of the cable, each fireproof single body comprises an anti-compression ring (5), the inner side of each anti-compression ring (5) is uniformly provided with a thermal expansion rod (6) along the length direction of the anti-compression ring, the other end of each thermal expansion rod (6) points to the circle center of the corresponding anti-compression ring (5), an arc-shaped fireproof sheet (7) is fixed at the other end of each thermal expansion rod (6), and the inner arc surface of each arc-shaped fireproof sheet (7) is abutted to the outer side of the positioning layer;

when a plurality of arc-shaped fireproof sheets (7) move towards the cable core, an annular fireproof interlayer can be formed in a surrounding mode.

2. The high flame-retardant fire-resistant electromagnetic shielding computer instrument cable according to claim 1, wherein: the arc-shaped fireproof sheet (7) is made of ceramic.

3. The high flame-retardant fire-resistant electromagnetic shielding computer instrument cable according to claim 1, wherein: the thermal expansion rod (6) is made of thermal expansion material.

4. The high flame-retardant fire-resistant electromagnetic shielding computer instrument cable according to claim 1, wherein: the inside of arc fire prevention piece (7) has arc chamber (71), and the both ends of arc chamber (71) all slide and be provided with movable stopper (72), and one side that two movable stoppers (72) deviate from mutually all is provided with arc pole (73), and arc pole (73) and adjacent arc fire prevention piece (7) tip is contradicted, forms the condensation between two movable stoppers (72) and glues and fills the chamber, and the condensation glues and fills the intracavity portion and fill and have the condensation to glue, the inboard intermediate position department of arc fire prevention piece (7) is provided with micropore (74).

5. The high flame-retardant fire-resistant electromagnetic shielding computer instrument cable according to claim 1, wherein: a sealing member is inserted into the inside of the micro hole (74).

Technical Field

The invention relates to the technical field of cables, in particular to a high-flame-retardant fireproof electromagnetic shielding-resistant computer instrument cable.

Background

If the existing computer and instrument cable is used for a long time in a severe environment, the performance is too single, and the safety performance of the existing computer and instrument cable is difficult to guarantee. When the existing computer and instrument cable runs daily, the existing computer and instrument cable often encounter factors such as suspension, electromagnetic interference and fuzzy transmission signals, and deterioration and hardening are caused due to environmental change to influence normal use, so that the cable is not strong in tensile strength, easy to break or deform, and not good in flame retardant and fire resistant performance.

Disclosure of Invention

The invention aims to provide a high-flame-retardant fire-resistant electromagnetic shielding-resistant computer instrument cable to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a high-flame-retardant fire-resistant electromagnetic shielding computer instrument cable comprises a cable core, a positioning layer, a fireproof flame-retardant layer tinned copper wire braided sub-shielding layer, an aluminum foil tape and an outer sheath layer which are sequentially arranged from inside to outside, wherein the cable core is formed by stranding a plurality of control wire cores, each control wire core comprises an aluminum alloy conductor, and an insulating layer is extruded outside the aluminum alloy conductor;

the positioning layer comprises a belt body, and the inside of the belt body is hollow and is spirally wound on the outer side of the cable core along the length direction of the cable;

the fireproof flame-retardant layer comprises fireproof monomers which are uniformly arranged on the outer side of the cable core along the length direction of the cable, each fireproof monomer comprises an anti-compression ring, the inner side of each anti-compression ring is uniformly provided with a thermal expansion rod along the length direction of the anti-compression ring, the other end of each thermal expansion rod points to the circle center of the anti-compression ring, an arc-shaped fireproof sheet is fixed at the other end of each thermal expansion rod, and the inner cambered surface of each arc-shaped fireproof sheet is abutted against the outer side of the positioning layer;

when a plurality of the arc-shaped fireproof sheets move towards the cable core, the arc-shaped fireproof sheets can be encircled to form an annular fireproof interlayer.

Preferably, the arc-shaped fireproof sheet is made of ceramic.

Preferably, the thermally expandable rod is made of a thermally expandable material.

Preferably, the inside of arc fire prevention piece has the arc chamber, and the both ends in arc chamber all slide and be provided with the activity stopper, and one side that two activity stoppers deviate from mutually all is provided with the arc pole, and the arc pole and adjacent arc fire prevention piece tip is contradicted, forms the condensate gum between two activity stoppers and fills the chamber, and the condensate gum fills intracavity portion and fills and have the condensate gum, the inboard intermediate position department of arc fire prevention piece is provided with the micropore.

Preferably, a sealing member is inserted into the inside of the micro-hole.

Compared with the prior art, the invention has the beneficial effects that:

(1) the band body is spirally wound on the outer side of the cable core, a gap is formed between the band body spirals, so that the heat dissipation of the cable core is facilitated, and the compression resistant effect is achieved, namely, the band body is deformed and buffered under compression, and the pressure is prevented from directly acting on the cable core and being in hard contact with the cable core.

(2) According to the invention, the fireproof flame-retardant layer is arranged on the outer side of the positioning layer, when the fireproof cable is applied, the cable can be bent at the position of the adjacent fireproof monomer, the cable can be rolled and is convenient to transport, when a fire disaster does not occur, the heat of the cable core can be radiated to the outside from the gap of the adjacent arc-shaped fireproof sheets, when the fire disaster occurs, the external temperature of the cable rises, and at the moment, the cable expands when being heated by the thermal expansion rod, so that the plurality of arc-shaped fireproof sheets 7 synchronously move towards the cable core and extrude the belt body until the adjacent ends of the plurality of arc-shaped fireproof sheets are mutually contacted to form the annular fireproof interlayer, thereby preventing the fire from spreading to the cable core of the cable.

(3) According to the invention, the arc-shaped cavity is arranged in the arc-shaped fireproof sheet, the two ends of the arc-shaped cavity are respectively provided with the movable plugs in a sliding manner, the arc-shaped rods are arranged on the opposite sides of the two movable plugs, the arc-shaped rods are abutted against the end parts of the adjacent arc-shaped fireproof sheets, the condensed glue filling cavity is formed between the two movable plugs, the condensed glue is filled in the condensed glue filling cavity, the micro holes are formed in the middle positions of the inner sides of the arc-shaped fireproof sheets, when the plurality of arc-shaped fireproof sheets approach the cable core, the adjacent ends of the arc-shaped fireproof sheets correspondingly approach, at the moment, the movable plugs in the arc-shaped cavity are pushed to move through the arc-shaped rods 73, and the condensed glue in the condensed glue filling cavity can be extruded out of the micro holes by the movement of the movable plugs, so that the cable core is coated by the condensed glue and is used for absorbing the heat conducted to the cable core from the outside, and meanwhile, the arc-shaped cavity can form a hollow layer to avoid the heat conducted to the cable core.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic side sectional view of the present invention.

In the figure: 1. an outer jacket layer; 2. a control wire core; 21. an aluminum alloy conductor; 22. an insulating layer; 3. a belt body; 4. a fire-proof monomer; 5. an anti-compression ring; 6. a rod that expands upon heating; 7. an arc-shaped fireproof sheet; 71. an arcuate cavity; 72. a movable plug; 73. an arcuate bar; 74. micro-hole, 8, tinned copper wire weaving sub-shielding layer; 9. and separating the aluminum foil strips.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, an embodiment of the present invention is shown: a high flame-retardant fire-resistant electromagnetic shielding computer instrument cable comprises a cable core, a positioning layer, a fireproof flame-retardant layer, a tinned copper wire woven sub-shielding layer 8, an aluminum foil separating belt 9 and an outer sheath layer 1 which are sequentially arranged from inside to outside, wherein the cable core is formed by stranding a plurality of control wire cores 2, each control wire core 2 comprises an aluminum alloy conductor 21, an insulating layer 22 is extruded outside the aluminum alloy conductor 21, and the aluminum foil separating belt 9 can eliminate electromagnetic interference;

the positioning layer comprises a belt body 3, the inside of the belt body 3 is hollow and spirally wound on the outer side of the cable core along the length direction of the cable, the belt body 3 is arranged on the outer side of the cable core, a gap is formed between the spirals of the belt body 3, so that the heat dissipation of the cable core is facilitated, and a compression resistant effect is achieved, namely, the belt body can generate deformation buffer pressure when being compressed, and the pressure is prevented from directly acting on the cable core and being in hard contact with the cable core;

the fireproof flame-retardant layer comprises fireproof single bodies 4 which are uniformly arranged on the outer side of the cable core along the length direction of the cable, each fireproof single body comprises an anti-compression ring 5, 6 thermal-expansion rods 6 are uniformly arranged on the inner side of each anti-compression ring 5 along the length direction of the cable, each thermal-expansion rod 6 is made of a thermal-expansion material, the other end of each thermal-expansion rod 6 points to the center of the anti-compression ring 5, an arc-shaped fireproof sheet 7 is fixed to the other end of each thermal-expansion rod 6, and the inner arc surface of each arc-shaped fireproof sheet 7 is abutted to the outer side of the positioning layer;

it is a plurality of when 7 arc fire prevention pieces moved to the cable core, can surround and form annular fire prevention interlayer, during the application, the cable can be crooked in adjacent fire prevention monomer department, the cable can carry out the rolling, be convenient for transport, when not having a fire, the heat of cable core can be followed 6 clearance departments of adjacent arc fire prevention piece and dispel the heat to the external world, and when having a fire, make cable external temperature rise, meet thermal expansion pole 6 and be heated and take place the inflation this moment, make 6 arc fire prevention pieces 7 remove and extrude the area body 3 to the cable core in step, until 6 arc fire prevention piece 7 adjacent ends contact each other, form annular fire prevention interlayer, prevent the intensity of a fire to stretch to the cable core of cable, and through this kind of design, do not have corrosivity and toxic substance production when burning, no pollution, green.

In this embodiment, the arc-shaped fireproof sheet 7 is made of ceramic, and the ceramic has a plurality of advantages of excellent insulation, corrosion resistance, high temperature resistance, high hardness, low density, radiation resistance and the like, so that the fireproof and flame-retardant properties of the cable are greatly improved.

In this embodiment, the arc-shaped fire-proof plate 7 has an arc-shaped cavity 71 therein, and two ends of the arc-shaped cavity 71 are slidably provided with movable plugs 72, the sides of the two movable plugs 72 facing away from each other are provided with arc-shaped rods 73, and the arc rod 73 is abutted against the end part of the adjacent arc fire-proof plate 7, a cold gel filling cavity is formed between the two movable plugs 72, and the interior of the cold glue filling cavity is filled with cold glue, the middle position of the inner side of the arc-shaped fireproof sheet 7 is provided with a micropore 74, when 6 arc-shaped fireproof sheets 7 approach to the cable core, the adjacent ends of the two arc-shaped cavities are correspondingly close to each other, and the movable plug 72 in the arc-shaped cavity 71 is pushed to move through the arc-shaped rod 73, and the movable plug 72 can move to extrude the condensed rubber in the condensed rubber filling cavity from the micropores, so that the cable core is coated by the condensed rubber, further, the heat of the cable core is absorbed, and meanwhile, the arc-shaped cavity 71 can form a hollow layer to avoid the heat being conducted to the cable core.

In this embodiment, a sealing member is inserted into the micro-hole 74 to prevent the condensed gel from being automatically discharged when a fire is not occurring.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.