CN-224203866-U - High-temperature-resistant anti-cracking power cable

Abstract

The utility model discloses a high-temperature-resistant anti-cracking power cable. The utility model provides a high temperature resistant anticracking power cable, including be used for electrically conductive sinle silk, be used for insulating cover, the holder that is used for isolated sinle silk, be used for avoiding the filling layer that the sinle silk removed, be used for fire-retardant flame retardant layer, be used for thermal-insulated insulating layer and be used for protecting its internals wear-resisting layer, the sinle silk is two at least, and every line core is outside to wrap up there is insulating cover, the core is arranged in the holder, the holder is erect in the flame retardant layer, the filling layer is filled in the clearance between holder and flame retardant layer, the insulating layer is established outside the flame retardant layer, the wear-resisting layer is established outside the insulating layer, the inside wall of insulating layer is provided with a plurality of first grooves of dodging, first dodging the groove evenly distributed and be in the insulating layer, every first dodging the groove sets up along the length direction of insulating layer. The high-temperature-resistant anti-cracking power cable has low cracking possibility and high temperature resistance.

Inventors

• ZHANG YUGUI
• YUAN WENXIA

Assignees

• 重庆科力线缆股份有限公司

Dates

Publication Date

20260505

Application Date

20250321

Claims (10)

1. 1. The high-temperature-resistant anti-cracking power cable is characterized by comprising a conductive wire core, an insulating sleeve used for insulating the wire core, a retainer used for isolating the wire core, a filling layer used for preventing the wire core from moving, a flame-retardant layer used for retarding flame, an insulating layer used for insulating heat and a wear-resistant layer used for protecting internal parts of the wire core, wherein at least two wire cores are wrapped with the insulating sleeve outside each wire core, the wire core is arranged in the retainer, the retainer is arranged in the flame-retardant layer, the filling layer is filled in a gap between the retainer and the flame-retardant layer, the insulating layer is arranged outside the flame-retardant layer, the wear-resistant layer is arranged outside the insulating layer, a plurality of first avoidance grooves are formed in the inner side wall of the insulating layer and uniformly distributed on the insulating layer, and each first avoidance groove is formed along the length direction of the insulating layer.
2. 2. The high-temperature-resistant and anti-cracking power cable according to claim 1, wherein a plurality of second avoidance grooves are formed in the inner side wall of the wear-resistant layer, the second avoidance grooves are uniformly distributed in the wear-resistant layer, and each second avoidance groove is formed in the length direction of the wear-resistant layer.
3. 3. The high-temperature-resistant and anti-cracking power cable according to claim 1, wherein the retainer is provided with at least two placing grooves, the placing grooves are uniformly distributed on the retainer and are mutually independent, and the placing grooves are used for placing a cable core.
4. 4. A high temperature resistant and crack control power cable as claimed in claim 3, wherein the radius of the placement groove is the same as the radius of the insulation sleeve arranged on the cable core.
5. 5. A high temperature resistant and crack control power cable according to claim 3, wherein the retainer comprises at least retainer plates, wherein the retainer plates are uniformly distributed in a radial shape, the retainer plates are connected at the center of the flame retardant layer, and the retainer plates and the connecting ends of the adjacent retainer plates are smoothly transited to form a placing groove.
6. 6. The high temperature resistant and crack control power cable of claim 5, wherein the retainer plate is provided with radial grooves, and the radial grooves are uniformly arranged along the length direction of the retainer plate.
7. 7. The high temperature resistant and crack control power cable of claim 6, wherein the radial grooves on both sides of the retaining plate are arranged in a staggered manner.
8. 8. A high temperature resistant and crack control power cable as claimed in claim 1, wherein the center of the retainer is provided with a hollow hole.
9. 9. A high temperature resistant and crack control power cable as claimed in claim 1, wherein the insulating sheath is made of soluble polytetrafluoroethylene or polyperfluoroethylene propylene or polyvinyl chloride.
10. 10. A high temperature resistant and crack control power cable as in claim 1, wherein the filler of the filler layer is a strip of high temperature resistant material.

Description

High-temperature-resistant anti-cracking power cable Technical Field The utility model relates to the technical field of cables, in particular to a high-temperature-resistant anti-cracking power cable. Background The power cable is used as an important carrier for transmitting and distributing electric energy, is widely applied to the scenes of urban underground power grids, power station leading-out lines, power supply in industrial and mining enterprises, power transmission lines under river-crossing seawater and the like, has gradually increased specific gravity in the power lines, and is an indispensable component in a main line of the power system. When the cable is extruded or impacted by external force, the cable is easy to deform and be damaged, so that the insulation performance of the cable is affected, and the problems of electrical short circuit, insulation failure and the like are caused. Disclosure of utility model The utility model aims to provide a high-temperature-resistant anti-cracking power cable capable of preventing cracking. In order to solve the problems, the utility model provides a high-temperature-resistant anti-cracking power cable, which comprises a wire core, an insulating sleeve, a retainer, a filling layer, a flame retardant layer, a heat insulating layer and a wear-resistant layer, wherein the wire core is used for conducting electricity, the insulating sleeve is used for insulating the wire core, the retainer is used for isolating the wire core, the filling layer is used for preventing the wire core from moving, the flame retardant layer is used for retarding flame, the heat insulating layer is used for insulating heat, the wear-resistant layer is used for protecting internal parts of the wire core, at least two wire cores, each wire core is wrapped with the insulating sleeve, the wire core is arranged in the retainer, the retainer is arranged in the flame retardant layer, the filling layer is filled in a gap between the retainer and the flame retardant layer, the heat insulating layer is arranged outside the flame retardant layer, the wear-resistant layer is arranged outside the heat insulating layer, a plurality of first avoidance grooves are uniformly distributed on the inner side wall of the heat insulating layer, and each first avoidance groove is arranged along the length direction of the heat insulating layer. Further, the inside wall of wearing layer is provided with a plurality of seconds and dodges the groove, and is a plurality of seconds dodge the groove evenly distributed and be in the wearing layer, every the second dodges the groove and sets up along the length direction of wearing layer. Further, the retainer is provided with at least two placing grooves, the placing grooves are uniformly distributed on the retainer and are mutually independent, and the placing grooves are used for placing the wire cores. Further, the radius of the placing groove is the same as that of the insulating sleeve arranged on the wire core. Further, the retainer comprises at least retainer plates which are uniformly distributed in a radial shape, the retainer plates are connected at the center of the flame-retardant layer, and the retainer plates and the connecting ends of the adjacent retainer plates are in smooth transition so as to form a placing groove. Further, radial grooves are formed in the retaining plate, radial grooves are formed in two sides of the retaining plate, and the radial grooves are uniformly arranged along the length direction of the retaining plate. Further, radial grooves on two sides of the retaining plate are arranged in a staggered mode. Further, a hollow hole is formed in the center of the retainer. Furthermore, the insulating sleeve is made of soluble polytetrafluoroethylene or poly (perfluoroethylene propylene) or polyvinyl chloride. Further, the filler of the filling layer is a strip-shaped object supported by a high-temperature resistant material. According to the high-temperature-resistant anti-cracking power cable, the first avoidance groove is formed in the heat insulation layer, so that the heat insulation layer can be subjected to strain impact and extrusion, the heat insulation layer is prevented from being broken, and the service life is prolonged. Drawings Fig. 1 is a schematic structural diagram of a high temperature resistant and anti-cracking power cable according to a preferred embodiment of the present utility model. Fig. 2 is a cross-sectional view of a high temperature resistant and crack resistant power cable of the present utility model. Fig. 3 is a schematic structural view of the cage. The meaning of the reference numerals in the drawings are: The cable core 1, the insulating sleeve 2, the retainer 3, the placing groove 301, the retainer plate 31, the radial groove 311, the filling layer 4, the flame retardant layer 5, the heat insulating layer 6, the first avoiding groove 61, the wear-resisting layer 7 and the second avoiding groo