CN223743324U - Medium-voltage flame-retardant cable with heat-insulating composite material lining layer - Google Patents

Medium-voltage flame-retardant cable with heat-insulating composite material lining layer

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Publication number
CN223743324U
CN223743324U CN202422937350.2U CN202422937350U CN223743324U CN 223743324 U CN223743324 U CN 223743324U CN 202422937350 U CN202422937350 U CN 202422937350U CN 223743324 U CN223743324 U CN 223743324U
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China
Prior art keywords
sheath
cable
layer
flame
outside
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CN202422937350.2U
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Chinese (zh)
Inventor
周翎
吴自银
秦月莲
陈洪庆
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Jiangsu Shengtai Cable Technology Co ltd
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Jiangsu Shengtai Cable Technology Co ltd
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Priority to CN202422937350.2U priority Critical patent/CN223743324U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

The utility model discloses a thermal-insulated combined material inner liner middling pressure fire-retardant cable, wherein relates to the fire-retardant cable technical field of middling pressure, when the inside that aims at solving current fire-retardant cable of middling pressure appears high temperature overheated, brings certain risk easily, makes the safe in utilization of fire-retardant cable of middling pressure receive the problem of influence, and its technical scheme main points include the cable core, the cable core includes sinle silk and filling layer, the outside of cable core is provided with around the covering, the outside of around the covering is provided with the inner liner, the inner liner includes crosslinked polyethylene sheath and polyurethane sheath, polyurethane sheath and crosslinked polyethylene sheath clearance department are provided with the protection and fill the room, the inside of protection is filled the glass fiber rope that has, the outside of inner liner is provided with the armor, the outside of armor is provided with the oversheath. The cable protection and flame retardance effects are achieved.

Description

Medium-voltage flame-retardant cable with heat-insulating composite material lining layer
Technical Field
The utility model relates to the technical field of medium-voltage flame-retardant cable structures, in particular to a medium-voltage flame-retardant cable with a heat-insulating composite material lining layer.
Background
The flame-retardant cable is characterized in that under the condition of a specified test, a sample is burnt, after a test fire source is removed, flame spread is only within a limited range, residual flame or residual burning can be automatically extinguished within a limited time, and the flame-retardant cable has the fundamental characteristics that the flame-retardant cable is possibly burnt out and cannot run under the condition of fire, but can prevent the spread of fire, in colloquially speaking, an electric wire can limit the combustion within a local range in case of fire, does not spread, and other various devices are protected, so that larger loss is avoided.
Through retrieving, authorized bulletin number CN220509750U, discloses a high-voltage fireproof cable in thermal-insulated combined material inner liner, which comprises a conductor, the surface fixedly connected with composite inner liner of conductor, the surface winding of composite inner liner has around the covering, the surface fixedly connected with oversheath around the covering, the surface cover of oversheath is equipped with the fine sheath of glass, the notch has been seted up to the bottom of oversheath, the inside sliding connection in notch has T shape rubber, one side cover of the fine sheath surface of glass is equipped with the fire collar. According to the utility model, the glass fiber sheath can be quickly sleeved, the cable is prevented from being worn by the raised strips, meanwhile, the mounting stability of the glass fiber sheath is ensured, when a fire disaster occurs, the glass fiber sheath can play a good role in fire prevention and heat insulation, and the inside of the glass fiber sheath is further protected by the composite inner bushing, so that the cable can ensure good fire resistance.
However, when the inside of the existing medium-voltage flame-retardant cable is overheated at high temperature, a certain risk is easily brought, so that the use safety of the medium-voltage flame-retardant cable is affected, and therefore, the medium-voltage flame-retardant cable with the heat-insulating composite material lining layer is urgently needed in the market to solve the problems.
Disclosure of utility model
The utility model aims to provide a medium-pressure flame-retardant cable with a heat-insulating composite material lining layer, which solves the problems that when the inside of the existing medium-pressure flame-retardant cable provided in the background art is overheated at high temperature, a certain risk is easily brought, and the use safety of the medium-pressure flame-retardant cable is influenced.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a thermal-insulated combined material inner liner middling pressure fire-retardant cable, includes the cable core, the cable core includes sinle silk and filling layer, the outside of cable core is provided with around the covering, around the outside of covering is provided with the inner liner, the inner liner includes crosslinked polyethylene sheath and polyurethane sheath, polyurethane sheath and crosslinked polyethylene sheath clearance department is provided with the protection and fills the room, the inside of protection filling the room is filled there is the glass fiber rope, the outside of inner liner is provided with the armor, the outside of armor is provided with the oversheath.
By adopting the technical scheme, the medium-voltage flame-retardant cable has good flame-retardant and heat-insulating properties.
Further, the filling layer is filled in a gap between the cable core and the cable core, and the filling layer is made of polypropylene fibers.
Through adopting above-mentioned technical scheme, can make middling pressure flame retardant cable have better flame retardant efficiency through the polypropylene fibre of packing, can cushion the protection simultaneously to middling pressure flame retardant cable.
Further, the wire core comprises a conductor, a shielding layer and an insulating sheath, wherein the shielding layer is wrapped outside the conductor, and the insulating sheath is arranged outside the shielding layer in an extrusion mode.
Through adopting above-mentioned technical scheme, can make middling pressure flame retardant cable have fine shielding effect through the shielding layer of lapping, can avoid conducting each other between the sinle silk through the insulating sheath that sets up.
Further, the conductor is formed by stranding a plurality of copper wires, the shielding layer is an aluminum strip, and the insulating sheath is polyethylene.
Through adopting above-mentioned technical scheme, the conductor that forms through the transposition of copper wire makes the conductor have better structural strength, makes the conductor be difficult to appear breaking to influence the use of conductor, can make the insulating shielding effect of sinle silk better through the polyethylene sheath.
Further, the wrapping layer is a cotton yarn belt, and the wrapping layer is wrapped outside the filling layer.
Through adopting above-mentioned technical scheme, carry out the package around through the cotton yarn area, can be convenient tie up between wire core and the filling layer 3, and the cotton yarn area has excellent wearability and fire resistance.
Further, the glass fiber rope is formed by wrapping and packaging a plurality of glass fiber wires, the glass fiber rope is wrapped outside the crosslinked polyethylene sheath, and the polyurethane sheath is extruded outside the glass fiber rope.
Through adopting above-mentioned technical scheme, through filling between polyurethane sheath and crosslinked polyethylene sheath has glass fiber rope, can make the fire-retardant cable of middling pressure have fine stretch-proofing effect like this, and the fire-retardant cable of middling pressure can be compressed deformation when receiving the extrusion simultaneously, can protect the line core like this.
Further, the flame-retardant coating is arranged outside the polyurethane sheath, and is sprayed outside the polyurethane sheath through a spraying process, and the thickness of the flame-retardant coating is 0.8-1.2mm.
Through adopting above-mentioned technical scheme, through spraying technology, can be fine the outside spraying of polyurethane sheath has flame retardant coating, makes the polyurethane sheath have fine flame retardant efficiency like this.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the utility model, the inner liner is arranged, so that the cross-linked polyethylene sheath and the polyurethane sheath are filled with the cross-woven glass fiber ropes, the inner liner has good flame retardant property, and meanwhile, the inner liner has good stretching resistance through the glass fiber ropes, so that the medium-voltage flame-retardant cable has good stretching resistance, when the medium-voltage flame-retardant cable is extruded, the glass fiber ropes arranged in the protective filling chamber deform, and thus, the cable core is not easy to damage due to extrusion;
2. the outside of the polyurethane sheath is sprayed with the 0.8-1.2mm flame retardant coating through a spraying process, so that the flame retardant effect of the inner liner layer can be further improved, and the medium-voltage flame retardant cable has better flame retardance.
Drawings
FIG. 1 is a partial front view of the present utility model;
FIG. 2 is a partial cross-sectional view of the present utility model;
FIG. 3 is a partial cross-sectional view of an inner liner of the present utility model;
fig. 4 is a perspective view of a glass fiber rope according to the present utility model.
In the figure, 1, a cable core, 2, a wire core, 3, a filling layer, 4, a conductor, 5, a shielding layer, 6, an insulating sheath, 7, a wrapping layer, 8, an inner liner, 9, an armor layer, 10, an outer sheath, 11, a crosslinked polyethylene sheath, 12, a polyurethane sheath, 13, a protective filling chamber, 14, a glass fiber rope, 15 and a flame retardant coating.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, an embodiment of the utility model provides a medium pressure flame-retardant cable with a heat insulation composite material lining layer, which comprises a cable core 1, wherein the cable core 1 comprises a wire core 2 and a filling layer 3, a wrapping layer 7 is arranged outside the cable core 1, a lining layer 8 is arranged outside the wrapping layer 7, the lining layer 8 comprises a crosslinked polyethylene sheath 11 and a polyurethane sheath 12, a protective filling chamber 13 is arranged at a gap between the polyurethane sheath 12 and the crosslinked polyethylene sheath 11, a glass fiber rope 14 is filled in the protective filling chamber 13, an armor layer 9 is arranged outside the lining layer 8, an outer sheath 10 is arranged outside the armor layer 9, the filling layer 3 is filled in a gap between the cable core 1 and the wire core 2, polypropylene fibers are used as the filling layer 3, the wrapping layer 7 is a cotton yarn tape, and the wrapping layer 7 is wrapped outside the filling layer 3, and the wire core 2 and the filling layer 3 can be well wrapped through the wrapping layer 7, so that the mess of the wire core 2 and the filling layer 3 can be avoided, the flame-retardant effect of the medium pressure flame-retardant cable can be further improved, the flame-retardant effect of the medium pressure flame-retardant cable can be well and the medium pressure cable can be well prevented from being deformed when the polypropylene fiber is well and the polypropylene fiber is well is extruded through the polypropylene fiber when the polypropylene fiber is arranged outside the cable.
Referring to fig. 1, the wire core 2 includes a conductor 4, a shielding layer 5 and an insulating sheath 6, the shielding layer 5 is wrapped outside the conductor 4, the insulating sheath 6 is arranged outside the shielding layer 5 in an extrusion manner, the conductor 4 is formed by twisting a plurality of copper wires, the shielding layer 5 is an aluminum strip, the insulating sheath 6 is polyethylene, the conductor 4 is made to have good structural strength by twisting a plurality of copper wires to form the conductor 4, the conductor 4 is not easy to break, the wire core 2 is made to have good electromagnetic shielding function by the aluminum strip shielding layer 5, good insulating effect can be achieved between the conductors by the polyethylene insulating sheath 6, and leakage between the conductors is avoided, so that the use of the medium voltage flame-retardant cable is affected.
Referring to fig. 1, a glass fiber rope 14 is formed by winding and packaging a plurality of glass fiber wires, the glass fiber rope 14 is wound and packaged on the outer portion of a crosslinked polyethylene sheath 11, a polyurethane sheath 12 is extruded on the outer portion of the glass fiber rope 14, a flame retardant coating 15 is arranged on the outer portion of the polyurethane sheath 12, the flame retardant coating 15 is sprayed on the outer portion of the polyurethane sheath 12 through a spraying process, the thickness of the flame retardant coating 15 is 0.8-1.2mm, the inner liner 8 can have good flame retardant performance through the sprayed flame retardant coating 15, and the tensile performance of the inner liner 8 can be improved through the arranged glass fiber rope 14, so that a medium-voltage flame retardant cable has good stretching resistant effect, and meanwhile, the glass fiber rope 14 can deform when being extruded, so that a wire core 2 can be well protected and is not easy to be damaged.
The inner liner 8 is arranged in the middle of the cross-linked polyethylene sheath 11 and the polyurethane sheath 12, and the cross-woven glass fiber ropes 14 are filled in the middle of the cross-linked polyethylene sheath 11 and the polyurethane sheath 12, so that the inner liner 8 has good flame retardant property, and meanwhile, the inner liner 8 has good stretching resistance through the glass fiber ropes 14, so that a medium-voltage flame-retardant cable has good stretching resistance, when the medium-voltage flame-retardant cable is extruded, the glass fiber ropes 14 arranged in the protective filling chamber 13 deform, so that the wire core 2 is not easy to damage due to extrusion, and the flame-retardant coating 15 with the thickness of 0.8-1.2mm is sprayed outside the polyurethane sheath 12 through a spraying process, so that the flame retardant effect of the inner liner 8 can be further improved, and the medium-voltage flame-retardant cable has better flame retardance.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1.一种隔热复合材料内衬层中压阻燃电缆，包括缆芯（1），其特征在于：所述缆芯（1）包括线芯（2）和填充层（3），所述缆芯（1）的外部设置有绕包层（7），所述绕包层（7）的外部设置有内衬层（8），所述内衬层（8）包括交联聚乙烯护套（11）和聚氨酯护套（12），所述聚氨酯护套（12）和交联聚乙烯护套（11）间隙处设置有防护填充室（13），所述防护填充室（13）的内部填充有玻璃纤维绳（14），所述内衬层（8）的外部设置有铠装层（9），所述铠装层（9）的外部设置有外护套（10）。1. A medium-voltage flame-retardant cable with a heat-insulating composite material inner liner, comprising a cable core (1), characterized in that: the cable core (1) comprises a wire core (2) and a filling layer (3), the cable core (1) is provided with a wrapping layer (7) on the outside, the wrapping layer (7) is provided with an inner liner layer (8) on the outside, the inner liner layer (8) comprises a cross-linked polyethylene sheath (11) and a polyurethane sheath (12), a protective filling chamber (13) is provided at the gap between the polyurethane sheath (12) and the cross-linked polyethylene sheath (11), the protective filling chamber (13) is filled with glass fiber rope (14), the inner liner layer (8) is provided with an armor layer (9) on the outside, and the armor layer (9) is provided with an outer sheath (10). 2.根据权利要求1所述的一种隔热复合材料内衬层中压阻燃电缆，其特征在于：所述填充层（3）填充在缆芯（1）和线芯（2）的间隙处，所述填充层（3）的为聚丙烯纤维。2. A medium-voltage flame-retardant cable with a heat-insulating composite material inner lining according to claim 1, characterized in that: the filling layer (3) fills the gap between the cable core (1) and the wire core (2), and the filling layer (3) is made of polypropylene fiber. 3.根据权利要求2所述的一种隔热复合材料内衬层中压阻燃电缆，其特征在于：所述线芯（2）包括导体（4）、屏蔽层（5）和绝缘护套（6），所述导体（4）外部绕包有屏蔽层（5），所述屏蔽层（5）外部挤包设置有绝缘护套（6）。3. A medium-voltage flame-retardant cable with a heat-insulating composite material inner lining according to claim 2, characterized in that: the core (2) includes a conductor (4), a shielding layer (5) and an insulating sheath (6), the conductor (4) is wrapped with a shielding layer (5), and the shielding layer (5) is extruded with an insulating sheath (6). 4.根据权利要求3所述的一种隔热复合材料内衬层中压阻燃电缆，其特征在于：所述导体（4）由若干个铜丝绞合而成，所述屏蔽层（5）为铝带，所述绝缘护套（6）为聚乙烯。4. A medium-voltage flame-retardant cable with a heat-insulating composite material inner lining according to claim 3, characterized in that: the conductor (4) is made of several copper wires twisted together, the shielding layer (5) is aluminum tape, and the insulating sheath (6) is polyethylene. 5.根据权利要求4所述的一种隔热复合材料内衬层中压阻燃电缆，其特征在于：所述绕包层（7）为棉纱带，所述绕包层（7）绕包在填充层（3）的外部。5. A medium-voltage flame-retardant cable with a heat-insulating composite material inner lining according to claim 4, characterized in that: the wrapping layer (7) is a cotton yarn tape, and the wrapping layer (7) is wrapped around the outside of the filling layer (3). 6.根据权利要求5所述的一种隔热复合材料内衬层中压阻燃电缆，其特征在于：所述玻璃纤维绳（14）由若干个玻璃纤维线缠绕包装而成，所述玻璃纤维绳（14）绕包在交联聚乙烯护套（11）的外部，所述聚氨酯护套（12）挤包在玻璃纤维绳（14）的外部。6. A medium-voltage flame-retardant cable with a heat-insulating composite material inner lining according to claim 5, characterized in that: the glass fiber rope (14) is formed by winding and packaging a plurality of glass fiber wires, the glass fiber rope (14) is wrapped around the outside of the cross-linked polyethylene sheath (11), and the polyurethane sheath (12) is extruded around the outside of the glass fiber rope (14). 7.根据权利要求6所述的一种隔热复合材料内衬层中压阻燃电缆，其特征在于：所述聚氨酯护套（12）的外部通过设置有阻燃涂料（15），所述阻燃涂料（15）通过喷涂工艺喷涂在聚氨酯护套（12）的外部，所述阻燃涂料（15）的厚度为0.8-1.2mm。7. A medium-voltage flame-retardant cable with a heat-insulating composite material inner lining according to claim 6, characterized in that: the exterior of the polyurethane sheath (12) is provided with a flame-retardant coating (15), the flame-retardant coating (15) is sprayed on the exterior of the polyurethane sheath (12) by a spraying process, and the thickness of the flame-retardant coating (15) is 0.8-1.2mm.
CN202422937350.2U 2024-11-29 2024-11-29 Medium-voltage flame-retardant cable with heat-insulating composite material lining layer Active CN223743324U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202422937350.2U CN223743324U (en) 2024-11-29 2024-11-29 Medium-voltage flame-retardant cable with heat-insulating composite material lining layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202422937350.2U CN223743324U (en) 2024-11-29 2024-11-29 Medium-voltage flame-retardant cable with heat-insulating composite material lining layer

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CN223743324U true CN223743324U (en) 2025-12-30

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