CN212161364U - High-elasticity anti-extrusion fireproof cable - Google Patents
High-elasticity anti-extrusion fireproof cable Download PDFInfo
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- CN212161364U CN212161364U CN202021145945.XU CN202021145945U CN212161364U CN 212161364 U CN212161364 U CN 212161364U CN 202021145945 U CN202021145945 U CN 202021145945U CN 212161364 U CN212161364 U CN 212161364U
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Abstract
The utility model relates to an anti extrusion fireproof cable of high elasticity, including the cable core, the cable core is three, the outside cladding of cable core has the coating, three the cable core is followed a week evenly distributed of coating inner wall, three be provided with rubber core strip between the cable core, the length direction of rubber core strip with the length direction of cable core is unanimous, rubber core strip is including placing the arced sheet of cable core, the arced sheet with the cable core is kept away from a side conflict of coating inner wall, adjacent two be connected with the connection piece between the tip of arced sheet, the arced sheet with be formed with the cushion chamber between the connection piece. The utility model provides a cushion chamber can cushion the extrusion to the cable core to it is impaired to reduce the cable core, extends the life of cable.
Description
Technical Field
The utility model belongs to the technical field of the cable technique and specifically relates to an anti extrusion fireproof cable of high elasticity is related to.
Background
With the rapid development of social economy in China, the requirements of people on power cables are higher and higher, the cables are generally rope-like cables formed by stranding a plurality of or a plurality of groups of conductor cores, each group of conductor cores are insulated from each other and are often twisted around a center, and the whole outer surface is wrapped by a highly-insulated covering layer. The device is erected in the air or installed underground or underwater for telecommunication or power transmission.
The prior art discloses a Chinese patent with a publication number of CN201438387U, which discloses a shallow sea oil well exploration cable, which comprises a communication cable, a data cable, a power cable, a reinforced cable core and a reinforced filling core, wherein a gap between each cable and the cable core is filled with water blocking glue, and the peripheries of the cables and the filling core are wrapped with a lining layer and an outer sheath; the power cable consists of two crosslinked polyethylene insulated wire cores; the communication cable consists of two pairs of non-polar medium insulated wire cores with shields, and the shields are braided by copper wires; the data cable consists of two groups of 5-type data lines, wherein each group comprises four pairs, and the number of the four pairs is 8; the reinforced cable core is formed by stranding a plurality of strands of spun silk; the outer layer of the outer sheath is of a sawtooth structure.
The above prior art solutions have the following drawbacks: when the cable is installed or transported, the cable is easily extruded, so that the cable core inside the cable is damaged, and the service life of the cable is shortened.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing an anti extrusion fireproof cable of high elasticity, the cushion chamber can cushion the extrusion to the cable core to it is impaired to reduce the cable core, extends the life of cable.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides an anti extrusion fireproof cable of high elasticity, includes the cable core, the cable core is three, the outside cladding of cable core has the coating, and is three the cable core is followed a week evenly distributed of coating inner wall, three be provided with the rubber core strip between the cable core, the length direction of rubber core strip with the length direction of cable core is unanimous, the rubber core strip is including placing the arced sheet of cable core, the arced sheet with the cable core is kept away from a side conflict of coating inner wall, adjacent two be connected with the connection piece between the tip of arced sheet, the arced sheet with be formed with the cushion chamber between the connection piece.
Through adopting above-mentioned technical scheme, when the cable received external pressure, the cable core can be to cable central line department extrusion, and the arc piece in the rubber core strip can produce deformation this moment, and the cushion chamber can have sufficient space to supply the arc piece to produce elastic deformation, and then can reduce the outside extrusion to the cable core of buffer cable to can reduce the cable core impaired, be favorable to prolonging the life of cable.
The present invention may be further configured in a preferred embodiment as: the coating include with the cable core is kept away from the conductor shielding layer of arc piece side conflict, by the conductor shielding layer outwards has fire-retardant layer and restrictive coating in proper order the cladding.
By adopting the technical scheme, the conductor shielding layer can reduce partial discharge generated between the cable core and the sheath and can shield an electric field; the flame-retardant layer can effectively prevent external open fire from damaging the inside, and is favorable for protecting the cable core.
The present invention may be further configured in a preferred embodiment as: and a steel wire mesh layer is arranged between the conductor shielding layer and the flame-retardant layer.
Through adopting above-mentioned technical scheme, the steel wire layer has improved the resistance to wear of restrictive coating, has further prolonged the life of cable.
The present invention may be further configured in a preferred embodiment as: an insulating layer is arranged between the steel wire mesh layer and the conductor shielding layer.
Through adopting above-mentioned technical scheme, the insulating layer can insulate between wire net layer and the cable core, reduces the wire net layer and causes the disorder to the electric field of cable core.
The present invention may be further configured in a preferred embodiment as: the sheath layer is made of a cross-linked polyethylene material.
By adopting the technical scheme, the cross-linked polyethylene material has the environmental stress crack resistance and the chemical corrosion resistance, and is favorable for improving the protection capability of the cable.
The present invention may be further configured in a preferred embodiment as: the arc length of the arc-shaped sheet on one side of the contact surface of the cable core is larger than one half of the perimeter of the cable core.
Through adopting above-mentioned technical scheme, set up the arc length of arc piece and cable core conflict face one side into the half that is greater than the cable core girth, can reduce the cable core and take place to slide in the rubber core strip with the cable core card, improved the steadiness of cable core.
The present invention may be further configured in a preferred embodiment as: the arc piece with be connected with the muscle piece between the connection piece, the muscle piece is located the cushion chamber.
Through adopting above-mentioned technical scheme, when the arc piece takes place deformation, the muscle piece can improve the tensile ability of dragging of junction between arc piece and the connection piece, reduces to lead to the rubber core strip to take place to damage because of excessive deformation, has improved the life of rubber core strip.
The present invention may be further configured in a preferred embodiment as: and filling fibers are filled between the connecting sheet and the inner wall of the coating layer.
By adopting the technical scheme, the fiber in the filling fiber can bear stronger longitudinal tensile force, the tensile resistance of the cable is favorably improved, and the service life of the cable is further prolonged.
To sum up, the utility model discloses a following at least one useful technological effect:
by arranging the rubber core strip, when the cable is subjected to external pressure, the cable core can be extruded towards the center line of the cable, at the moment, the arc-shaped sheet in the rubber core strip can deform, the buffer cavity can have enough space for the arc-shaped sheet to elastically deform, and further, the extrusion of the outside of the buffer cable to the cable core can be reduced, so that the damage of the cable core can be reduced, and the service life of the cable can be prolonged;
the arc length of one side of the contact surface of the arc sheet and the cable core is set to be larger than one half of the circumference of the cable core, so that the cable core can be clamped into the rubber core strip, the sliding of the cable core is reduced, and the stability of the cable core is improved;
through setting up the muscle piece, when the arc piece takes place deformation, the ability is dragged in the tensile that the muscle piece can improve junction between arc piece and the connection piece, reduces to lead to the rubber core strip to take place to damage because of excessive deformation, has improved the life of rubber core strip.
Drawings
Fig. 1 mainly illustrates the overall construction of a cable in the present invention;
fig. 2 is a schematic cross-sectional view of fig. 1, illustrating mainly the construction of the rubber core and cladding.
In the figure, 1, a cable core; 2. a coating layer; 21. a conductor shield layer; 22. a flame retardant layer; 23. a sheath layer; 24. a steel wire mesh layer; 25. an insulating layer; 3. a rubber core strip; 31. an arc-shaped sheet; 32. connecting sheets; 33. a buffer chamber; 34. a rib piece; 4. and (3) filling fibers.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for utility model discloses a high elasticity anti extrusion fireproof cable, including cable core 1, cladding 2 and rubber core strip 3. The cable core 1 is three, and the cladding of coating 2 is on three cable cores 1, and three cable cores 1 are along a week evenly distributed of 2 inner walls of coating, and rubber core strip 3 is made by the rubber material, and rubber core strip 3 runs through 1 length direction's of cable core both ends, and rubber core strip 3 is located three cable core 1's intermediate position.
As shown in fig. 2, the rubber core strip 3 includes an arc piece 31, a connecting piece 32, and a cushion chamber 33. The arc piece 31 is the slice, and length direction runs through 1 length direction's of cable core both ends, and the arc piece 31 is three, and three arc pieces 31 distribute and contradict with the side of three cable core 1 keeping away from 2 inner walls one sides of coating, and the arc length of arc piece 31 and 1 conflict one side of cable core is the two-thirds of 1 length of cable core to in 1 card of cable core goes into the arc piece 31, and then can reduce 1 emergence of cable core and slide, improved cable core 1's steadiness. The connecting pieces 32 are three, the three connecting pieces 32 are respectively connected between the end surfaces of two adjacent arc-shaped pieces 31, and the length of the connecting pieces 32 is consistent with that of the arc-shaped pieces 31. A cushion chamber 33 is formed between the connecting piece 32 and the arc-shaped piece 31. When the cable received external pressure, cable core 1 can be to cable center line department extrusion, and the arc piece 31 of rubber core strip 3 can produce deformation this moment, and cushion chamber 33 can have sufficient space to supply arc piece 31 to produce elastic deformation, and then can reduce the outside extrusion to cable core 1 of buffer cable to can reduce cable core 1 impaired, be favorable to prolonging the life of cable.
As shown in fig. 2, a rib 34 is connected between the side wall of the arc piece 31 on one side of the cushion chamber 33 and the side wall of the connecting piece 32 on one side of the cushion chamber 33, the rib 34 is connected between the two sides of the arc piece 31 and the connecting pieces 32 on the two sides, and the length of the rib 34 is consistent with that of the connecting piece 32. When the arc piece 31 takes place deformation, the tensile ability of tearing of junction between arc piece 31 and the connection piece 32 can be improved to muscle piece 34, reduces to lead to rubber core strip 3 to take place to damage because of the excessive deformation of arc piece 31, has improved rubber core strip 3's life.
As shown in fig. 2, the filling fiber 4 is filled between the side wall of the connecting sheet 32 far from the buffer cavity 33 and the inner wall of the coating layer 2, the filling fiber 4 is made of terylene, and the fiber can bear stronger longitudinal breaking force, thereby being beneficial to improving the anti-pulling capacity of the cable and further prolonging the service life of the cable.
As shown in fig. 2, the coating layer 2 includes a conductor shielding layer 21, an insulating layer 25, a steel wire mesh layer 24, a flame retardant layer 22, and a sheath layer 23 in sequence from inside to outside. The conductor shielding layer 21 is made of metal paper tape, so that partial discharge generated by other substances in the cable core 1 and the coating layer 2 can be reduced, and an electric field can be shielded. The steel wire mesh layer 24 is formed by weaving steel wires, and the abrasion resistance of the coating layer 2 can be improved. Insulating layer 25 is made by insulating plastics, and insulating layer 25 can insulate between wire mesh layer 24 and cable core 1, reduces wire mesh layer 24 and causes the disorder to the electric field of cable core 1. The flame retardant layer 22 is a synthetic mica tape layer, many performances of the synthetic mica are better than those of natural mica, for example, the synthetic mica can resist the temperature of more than 1200 ℃, under the high temperature condition, the volume resistivity of the synthetic mica is 1000 times higher than that of the natural mica, the electric insulation property, the high temperature resistance and the heat insulation property are good, and the interior of the cable can be protected from the external high temperature within a certain time. The sheath layer 23 is made of a cross-linked polyethylene material, the cross-linked polyethylene material has environmental stress crack resistance and chemical corrosion resistance, and the sheath layer 23 is arranged on the outermost layer, so that the protection capability of the cable is improved.
The implementation principle of the embodiment is as follows: when the cable received external pressure, cable core 1 can be to cable center line department extrusion, and arc piece 31 in the rubber core strip 3 can produce deformation this moment, and cushion chamber 33 can have sufficient space to supply arc piece 31 to produce elastic deformation, and then can reduce the outside extrusion to cable core 1 of buffer cable to can reduce cable core 1 impaired, be favorable to prolonging the life of cable.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides an anti extrusion fireproof cable of high elasticity, includes cable core (1), cable core (1) is three, the outside cladding of cable core (1) has coating (2), its characterized in that: three cable core (1) is followed a week evenly distributed of coating (2) inner wall, three be provided with rubber core strip (3) between cable core (1), the length direction of rubber core strip (3) with the length direction of cable core (1) is unanimous, rubber core strip (3) are including placing arc piece (31) of cable core (1), arc piece (31) with cable core (1) is kept away from a side conflict of coating (2) inner wall, adjacent two be connected with connection piece (32) between the tip of arc piece (31), arc piece (31) with be formed with cushion chamber (33) between connection piece (32).
2. A highly elastic anti-extrusion fireproof cable according to claim 1, wherein: coating (2) include with cable core (1) are kept away from conductor shielding layer (21) that arc piece (31) side is contradicted, by conductor shielding layer (21) outwards have outward in proper order the cladding have fire-retardant layer (22) and restrictive coating (23).
3. A highly elastic anti-extrusion fireproof cable according to claim 2, wherein: and a steel wire mesh layer (24) is arranged between the conductor shielding layer (21) and the flame-retardant layer (22).
4. A highly elastic anti-extrusion fireproof cable according to claim 3, wherein: an insulating layer (25) is arranged between the steel wire mesh layer (24) and the conductor shielding layer (21).
5. A highly elastic anti-extrusion fireproof cable according to claim 2, wherein: the sheath layer (23) is made of a cross-linked polyethylene material.
6. A highly elastic anti-extrusion fireproof cable according to claim 1, wherein: the arc length of one side of the contact surface of the arc-shaped sheet (31) and the cable core (1) is larger than one half of the perimeter of the cable core (1).
7. A highly elastic anti-extrusion fireproof cable according to claim 1, wherein: a rib (34) is connected between the arc-shaped piece (31) and the connecting piece (32), and the rib (34) is positioned in the buffer cavity (33).
8. A highly elastic anti-extrusion fireproof cable according to claim 1, wherein: and filling fibers (4) are filled between the connecting sheet (32) and the inner wall of the coating layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021145945.XU CN212161364U (en) | 2020-06-18 | 2020-06-18 | High-elasticity anti-extrusion fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021145945.XU CN212161364U (en) | 2020-06-18 | 2020-06-18 | High-elasticity anti-extrusion fireproof cable |
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| Publication Number | Publication Date |
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| CN212161364U true CN212161364U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021145945.XU Expired - Fee Related CN212161364U (en) | 2020-06-18 | 2020-06-18 | High-elasticity anti-extrusion fireproof cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114049994A (en) * | 2021-11-11 | 2022-02-15 | 国网四川省电力公司内江供电公司 | Resistance to compression transmission cable of self-adaptation partial pressure |
| CN114373571A (en) * | 2021-12-30 | 2022-04-19 | 苏州建进成电器配件有限公司 | Charging cable for lithium power battery |
| CN118315112A (en) * | 2024-04-24 | 2024-07-09 | 安徽中邦特种电缆科技有限公司 | A, B cavity cable assembly |
-
2020
- 2020-06-18 CN CN202021145945.XU patent/CN212161364U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114049994A (en) * | 2021-11-11 | 2022-02-15 | 国网四川省电力公司内江供电公司 | Resistance to compression transmission cable of self-adaptation partial pressure |
| CN114049994B (en) * | 2021-11-11 | 2024-07-16 | 国网四川省电力公司内江供电公司 | A pressure-resistant transmission cable with adaptive voltage division |
| CN114373571A (en) * | 2021-12-30 | 2022-04-19 | 苏州建进成电器配件有限公司 | Charging cable for lithium power battery |
| CN118315112A (en) * | 2024-04-24 | 2024-07-09 | 安徽中邦特种电缆科技有限公司 | A, B cavity cable assembly |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |