CN213752043U - Cable for computer connection of intrinsic safety circuit - Google Patents

Abstract

The utility model discloses a computer of essence safety circuit cable for connection belongs to computer cable technical field, including a plurality of cable cores and first polyester tape layer, the outside on first polyester tape layer has wrapped up the buffer layer in proper order, total shielding layer, around covering and fire-retardant polyvinyl chloride sheath, every cable core all includes pair twist group and second polyester tape layer, the outside on second polyester tape layer has wrapped up tinned copper wire shielding layer and third polyester tape layer in proper order, the buffer layer is including being wavy cushion collar and a plurality of fire prevention expansion strip, the inboard and the outside of cushion collar all are equipped with the arc wall that a plurality of circumferences distribute, the outside on first polyester tape layer is equipped with a plurality of buffering strips. The utility model has better flame retardant property, compression resistance and high temperature resistance, the flame retardant graphite powder filling layer can play a certain flame retardant effect, and the fireproof expansion strips distributed outside the buffer sleeve can expand to block the crack in a fire state; the buffering strip can play the effect of secondary buffering, effectively protects the cable core.

Description

Cable for computer connection of intrinsic safety circuit

Technical Field

The utility model relates to a computer cable technical field specifically says to a cable is used in computer connection of essence safety circuit.

Background

The continuous development of high and new technologies such as big data, artificial intelligence, internet of things and the like, and the application range of computer cables is continuously expanded. Meanwhile, important engineering facilities such as large buildings, subways, tunnels, nuclear power stations and the like and places such as large supermarkets, exhibition centers and the like with intensive personnel are more and more, and requirements are provided for safety performance under the condition of fire. The computer cable plays an important role in the facilities, is a channel for processing various information, and plays an important role in escape and disaster relief if the computer cable can normally run within a certain time under the condition of fire.

In the process of implementing the embodiments of the present invention, the inventor finds that at least the following defects exist in the background art:

in the intellectuality and the integrated in-process of electrical apparatus instrument, current cable structure compressive property for the computer is weak, and the inside cable of cable receives external force extrusion easily and takes place to damage, needs to improve to current cable fire resistance and high temperature resistance are relatively poor, have not satisfied the market demand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a computer of essence safety circuit is connected and is used cable to solve the problem that proposes among the above-mentioned background art.

The technical scheme of the utility model is that: including a plurality of cable cores and parcel first polyester tape layer in a plurality of cable core outsides, its characterized in that: the outer side of the first polyester tape layer is sequentially wrapped with a buffer layer, a total shielding layer, a wrapping layer and a flame-retardant polyvinyl chloride sheath, and a filling material is arranged in a gap between the cable core and the first polyester tape layer;

each cable core comprises a pair-twisting group and a second polyester tape layer wrapped on the outer side of the pair-twisting group, a tinned copper wire shielding layer and a third polyester tape layer are sequentially wrapped on the outer side of the second polyester tape layer, the pair-twisting group is formed by twisting two groups of conductors in pair, a polyethylene insulating layer is wrapped on the outer side of each group of conductors, and a flame-retardant graphite powder filling layer is arranged between the second polyester tape layer and the conductors;

the buffer layer comprises a wavy buffer sleeve and a plurality of fireproof expansion strips, the buffer sleeve is made of elastic plastic materials, a plurality of arc-shaped grooves which are distributed circumferentially are formed in the inner side and the outer side of the buffer sleeve, and the plurality of fireproof expansion strips are uniformly distributed in the plurality of arc-shaped grooves in the outer side of the buffer sleeve along the circumferential direction;

the outside on first polyester tape layer is equipped with a plurality of buffering strips along circumferencial direction evenly distributed, and the buffering strip is made by the TPU material, and a plurality of buffering strip evenly distributed are in a plurality of arc walls of cushion collar inboard, and the surface of buffering strip is equipped with the cambered surface that suits with the inside arc wall of cushion collar.

As an optimized technical scheme of the utility model, in order to further improve the tensile strength of this cable, the inside on first polyester tape layer is equipped with the anti wire drawing of galvanized steel wire that a plurality of equal angular difference distribute.

As an optimal technical scheme of the utility model, in order to further improve the high temperature resistance ability of this cable, the internal surface coating of cushion collar has high temperature resistant layer.

As an optimized technical scheme of the utility model, the inside of buffering strip is equipped with oval cushion chamber.

As an optimal technical scheme of the utility model, it is the polyester area around the covering to wind the covering.

As an optimized technical scheme of the utility model, total shielding layer is woven for the tinned copper wire and is formed.

As an optimized technical proposal of the utility model, the filling material is polypropylene tearing reticular filling rope.

As an optimal technical scheme, the outside of fire-retardant polyvinyl chloride sheath is equipped with a plurality of wear-resisting strips along circumferencial direction evenly distributed, and the surface of wear-resisting strip is equipped with the nylon layer.

The utility model discloses an improve and provide a computer of essence safety circuit cable for connection here, compare with prior art, have following improvement and advantage:

the cable for computer connection of the intrinsically safe circuit has better flame retardant property and high temperature resistance, the flame retardant graphite powder filling layer can play a certain flame retardant effect, and the fireproof expansion strips distributed outside the buffer sleeve expand to block a crack in a fire state, so that a cable core is prevented from being burnt by open fire, and the use safety of the cable is improved; in order to further improve the high-temperature resistance of the cable, the inner surface of the buffer sleeve is coated with a high-temperature resistant layer.

Two, the utility model provides a pair of essential safety circuit's cable for computer connection has the compressive property of preferred, and the cushion collar is made by the elastic plastic material, makes the cushion collar have certain buffering effect to the buffering strip can play the effect of secondary buffering, and oval cushion chamber takes place deformation for the cable core and provides certain space, effectively protects the cable core, has improved the compressive property of cable.

Thirdly, the utility model provides a pair of essential safety circuit's cable for computer connection has the compressive property of preferred, and the anti wire drawing of galvanized steel wire has certain pliability, effectively improves the tensile property of this cable.

Drawings

The invention is further explained below with reference to the figures and examples:

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

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a partial cross-sectional view of the present invention.

Description of reference numerals:

1. a cable core; 11. a conductor; 12. a polyethylene insulating layer; 13. a second polyester tape layer; 14. a tinned copper wire shielding layer; 15. a third polyester tape layer; 16. a flame-retardant graphite powder filling layer; 2. a first polyester tape layer; 3. a buffer layer; 31. a buffer sleeve; 32. a fire-resistant intumescent strip; 33. an arc-shaped slot; 34. a buffer strip; 35. a cambered surface; 4. a total shielding layer; 5. wrapping a covering; 6. a flame retardant polyvinyl chloride sheath; 61. wear resistant strips; 7. a filler material; 8. the galvanized steel wire resists wire drawing; 9. an elliptical buffer chamber.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 3, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses an improve and provide a computer of intrinsic safety circuit cable for connection here, as shown in fig. 1-3, including a plurality of cable cores 1 and wrap up the first polyester tape layer 2 in a plurality of cable cores 1 outsides, its characterized in that: the outer side of the first polyester tape layer 2 is sequentially wrapped with a buffer layer 3, a total shielding layer 4, a wrapping layer 5 and a flame-retardant polyvinyl chloride sheath 6, and a filling material 7 is arranged in a gap between the cable core 1 and the first polyester tape layer 2;

each cable core 1 comprises a pair-twisted group and a second polyester tape layer 13 wrapped on the outer side of the pair-twisted group, the outer side of the second polyester tape layer 13 is sequentially wrapped with a tinned copper wire shielding layer 14 and a third polyester tape layer 15, the pair-twisted group is formed by twisting two groups of conductors 11 in pair, the outer side of each group of conductors 11 is wrapped with a polyethylene insulating layer 12, and a flame-retardant graphite powder filling layer 16 is arranged between the second polyester tape layer 13 and the conductors 11; the flame-retardant graphite powder filling layer 16 can play a certain flame-retardant effect;

the buffer layer 3 comprises a wavy buffer sleeve 31 and a plurality of fireproof expansion strips 32, the buffer sleeve 31 is made of elastic plastic materials, a plurality of arc-shaped grooves 33 distributed circumferentially are formed in the inner side and the outer side of the buffer sleeve 31, and the plurality of fireproof expansion strips 32 are uniformly distributed in the plurality of arc-shaped grooves 33 in the outer side of the buffer sleeve 31 along the circumferential direction; the fireproof expansion strips 32 distributed on the outer side of the buffer sleeve 31 expand in a fire state to block the gap, so that the cable core 1 is prevented from being burnt by open fire, the use safety of the cable is improved, and the bottom surfaces of the fireproof expansion strips 32 are matched with the arc-shaped grooves 33 on the outer side of the buffer sleeve 31 to increase the contact area between the fireproof expansion strips 32 and the buffer sleeve 31; buffer sleeve 31 is made by the elastic plastic material, makes buffer sleeve 31 have certain buffering effect to buffer strip 34 can play the effect of secondary buffering, and the oval cushion chamber 9 of buffer strip 34 inside, oval cushion chamber 9 take place deformation for cable core 1 and provide certain space, effectively protect cable core 1, have improved the compressive property of cable.

A plurality of buffer strips 34 which are uniformly distributed along the circumferential direction are arranged on the outer side of the first polyester belt layer 2, the buffer strips 34 are made of TPU materials, the buffer strips 34 are uniformly distributed in a plurality of arc-shaped grooves 33 on the inner side of the buffer sleeve 31, and the outer surface of each buffer strip 34 is provided with an arc surface 35 which is matched with the arc-shaped grooves 33 on the inner side of the buffer sleeve 31; and buffering strip 34 can play the effect of secondary buffering, and oval buffer chamber 9 inside buffering strip 34 effectively protects cable core 1, has improved the compressive property of cable.

Specifically, in order to further improve the tensile property of the cable, a plurality of galvanized steel wire drawing-resistant wires 8 distributed at equal angular difference are arranged inside the first polyester tape layer 2. The galvanized steel wire anti-drawing wire 8 has certain flexibility, and the tensile property of the cable is effectively improved.

Specifically, in order to further improve the high temperature resistance of the cable, the inner surface of the buffer sleeve 31 is coated with a high temperature resistant layer.

Specifically, an oval buffer cavity 9 is arranged inside the buffer strip 34. The oval buffer cavity 9 provides a certain space for the deformation of the cable core 1.

Specifically, the wrapping layer 5 is a polyester tape wrapping layer.

Specifically, the total shielding layer 4 is formed by weaving tinned copper wires.

Specifically, the filling material 7 is a polypropylene tearing net-shaped filling rope.

Specifically, a plurality of wear-resistant strips 61 which are uniformly distributed along the circumferential direction are arranged on the outer side of the flame-retardant polyvinyl chloride sheath 6, and a nylon layer is arranged on the outer surfaces of the wear-resistant strips 61; wear-resisting strip 61 is used for improving the wear resistance of cable, avoids protecting fire-retardant polyvinyl chloride sheath 6 direct and ground contact and takes place the damage, and the nylon layer can further improve wear resistance of wear-resisting strip 61.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A computer-connected cable for intrinsically safe circuits, comprising a plurality of cable cores (1) and a first polyester tape layer (2) wrapped outside the plurality of cable cores (1), characterized in that: the outer side of the first polyester tape layer (2) is sequentially wrapped with a buffer layer (3), a total shielding layer (4), a wrapping layer (5) and a flame-retardant polyvinyl chloride sheath (6), and a filling material (7) is arranged in a gap between the cable core (1) and the first polyester tape layer (2);

each cable core (1) comprises a pair-twisted group and a second polyester tape layer (13) wrapped on the outer side of the pair-twisted group, the outer side of the second polyester tape layer (13) is sequentially wrapped with a tinned copper wire shielding layer (14) and a third polyester tape layer (15), the pair-twisted group is formed by twisting two groups of conductors (11), the outer side of each group of conductors (11) is wrapped with a polyethylene insulating layer (12), and a flame-retardant graphite powder filling layer (16) is arranged between the second polyester tape layer (13) and the conductors (11);

the buffer layer (3) comprises a wavy buffer sleeve (31) and a plurality of fireproof expansion strips (32), the buffer sleeve (31) is made of elastic plastic materials, a plurality of arc-shaped grooves (33) which are circumferentially distributed are formed in the inner side and the outer side of the buffer sleeve (31), and the plurality of fireproof expansion strips (32) are uniformly distributed in the plurality of arc-shaped grooves (33) in the outer side of the buffer sleeve (31) along the circumferential direction;

the outer side of the first polyester belt layer (2) is provided with a plurality of buffer strips (34) which are uniformly distributed along the circumferential direction, the buffer strips (34) are made of TPU materials, the buffer strips (34) are uniformly distributed in a plurality of arc-shaped grooves (33) on the inner side of the buffer sleeve (31), and the outer surface of each buffer strip (34) is provided with an arc surface (35) matched with the arc-shaped grooves (33) on the inner side of the buffer sleeve (31).

2. The intrinsically safe circuit computer-connect cable of claim 1, wherein: the first polyester tape layer (2) is internally provided with a plurality of galvanized steel wire anti-drawing wires (8) distributed in an equal angle difference mode.

3. The intrinsically safe circuit computer-connect cable of claim 1, wherein: the inner surface of the buffer sleeve (31) is coated with a high-temperature resistant layer.

4. The intrinsically safe circuit computer-connect cable of claim 1, wherein: an oval buffer cavity (9) is arranged inside the buffer strip (34).

5. The intrinsically safe circuit computer-connect cable of claim 1, wherein: the wrapping layer (5) is a polyester tape wrapping layer.

6. The intrinsically safe circuit computer-connect cable of claim 1, wherein: the total shielding layer (4) is formed by weaving tinned copper wires.

7. The intrinsically safe circuit computer-connect cable of claim 1, wherein: the filling material (7) is a polypropylene tearing reticular filling rope.

8. The intrinsically safe circuit computer-connect cable of claim 1, wherein: the outer side of the flame-retardant polyvinyl chloride sheath (6) is provided with a plurality of wear-resistant strips (61) which are uniformly distributed along the circumferential direction, and the outer surfaces of the wear-resistant strips (61) are provided with nylon layers.

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