CN-224232381-U - Anticorrosive structure of smooth aluminium sheath

Abstract

The utility model relates to the technical field of smooth aluminum protection devices, and discloses a smooth aluminum sheath anti-corrosion structure which comprises a telescopic outer pipe assembly and is characterized in that a telescopic middle pipe assembly is arranged in the telescopic outer pipe assembly in a limiting mode, a braking telescopic assembly is arranged at one end of the telescopic outer pipe assembly in a limiting mode, and a telescopic inner pipe assembly is arranged in the telescopic middle pipe assembly in a sliding mode. According to the utility model, the brake telescopic assembly is arranged on the device, so that when the device is used, and the length of protection is long, the telescopic adjustment can be performed through the arranged brake telescopic assembly, so that different use scenes can be conveniently dealt with.

Inventors

• ZHAO DI
• WANG ZHIHUI
• LIU JIE
• Ouyang Xiangzhang
• Bai Qingying
• PENG LISHA

Assignees

• 广州南洋电缆集团有限公司

Dates

Publication Date

20260512

Application Date

20250530

Claims (6)

1. 1. The anti-corrosion structure of the smooth aluminum sheath comprises a telescopic outer pipe assembly (1) and is characterized in that a telescopic middle pipe assembly (3) is arranged in the telescopic outer pipe assembly (1) in a limiting mode, a braking telescopic assembly (2) is arranged at one end of the telescopic outer pipe assembly (1) in a limiting mode, and a telescopic inner pipe assembly (4) is arranged in the telescopic middle pipe assembly (3) in a sliding mode; The brake telescopic assembly (2) comprises an assembly base (201), the assembly base (201) is arranged on the outer side of an assembly threaded port (102) in a limiting mode through an assembly port (202), a fixing notch (203) is formed in the middle of the outer side of the assembly base (201), a pneumatic pump (204) is fixedly arranged in the middle of the fixing notch (203), and a pushing assembly (205) is arranged at the tail end of the pneumatic pump (204).
2. 2. The corrosion prevention structure of a smooth aluminum sheath of claim 1, wherein the telescopic outer tube assembly (1) comprises a telescopic tube I (101), an assembly threaded opening (102) is fixedly arranged on the outer wall of one end of the telescopic tube I (101), and limiting telescopic grooves I (103) are fixedly formed in the upper side and the lower side of the inner wall of the telescopic tube I (101).
3. 3. The corrosion resistant structure of a smooth aluminum sheath of claim 1, wherein the telescopic middle pipe assembly (3) comprises a telescopic pipe II (301), a limiting telescopic block I (302) is fixedly arranged on one side of the outer walls of the top and the bottom of the telescopic pipe II (301), limiting telescopic grooves II (303) are formed in the left side and the right side of the inner wall of the telescopic pipe II (301), and the limiting telescopic block I (302) is slidably arranged in the limiting telescopic groove I (103).
4. 4. The corrosion prevention structure of a smooth aluminum sheath according to claim 1, wherein the telescopic inner tube assembly (4) comprises a telescopic tube III (401), limiting sliding blocks II (403) are fixedly arranged on the outer walls of the left side and the right side of the telescopic tube III (401), a supporting ring plate (402) is fixedly arranged at the outer side tail end of the telescopic tube III (401), a silica gel pad (404) is fixedly arranged on the inner wall of the telescopic tube III (401), and the limiting sliding blocks II (403) are slidably arranged in the limiting telescopic groove II (303).
5. 5. The corrosion prevention structure of a smooth aluminum sheath according to claim 2, wherein the first telescopic pipe (101) comprises polyethylene (1011), fluoroplastic (1012) is fixedly arranged on the outer side of the polyethylene (1011), and polyvinyl chloride (1013) is fixedly arranged on the outer side of the fluoroplastic (1012).
6. 6. The corrosion prevention structure of a smooth aluminum sheath of claim 1, wherein the pushing assembly (205) comprises a flexible supporting bar (2051), limiting blocks (2052) are fixedly arranged at the tail ends of two sides of the flexible supporting bar (2051), the limiting blocks (2052) are arranged in limiting groove blocks (2053) in a limiting mode, and the limiting groove blocks (2053) are fixedly arranged on the inner outer wall of the three telescopic tubes (401).

Description

Anticorrosive structure of smooth aluminium sheath Technical Field The utility model relates to the technical field of smooth aluminum protection devices, in particular to a smooth aluminum sheath anti-corrosion structure. Background In the technical field of cables, the cable not only needs to have the mechanical and physical properties and the electrical properties of common plastic insulation and sheath power cable products, but also needs to have the properties of water resistance, corrosion resistance, interference resistance, strong mechanical impact resistance and the like. At present, the traditional waterproof cable on the market mostly adopts a crosslinked polyethylene insulation, semiconductive buffer resistance water layer, corrugated aluminum sheath waterproof and anticorrosion and asphalt coating layer structure. However, the structure has a plurality of defects, such as cross-linked polyethylene (XLPE) insulation is easy to generate water tree under the action of an electric field in the cross-linking process due to impurities, micropores and moisture, XLPE insulation is a thermosetting material and can not be recycled, for medium-voltage power cables, a corrugated aluminum sheath serving as a waterproof layer and a shielding layer is in point or line contact with a semiconductive buffer layer due to the existence of a spiral air gap space, so that the electric field inside the aluminum sheath is unevenly distributed, the semiconductive buffer layer and even the insulating shielding layer (single-core cable) are ablated, meanwhile, the spiral air gap has direct adverse effect on the waterproof performance of the cable, in addition, asphalt coating layer adopts a chlorohydrin method to produce asphalt base material propylene oxide, the discharge amount of three wastes is large, environmental pollution is serious, and smoke density is large after asphalt is combusted, so that the environment is not friendly. Since 2004, problems of white powder, ablation, breakdown and the like appear on a buffer layer under the corrugated aluminum sheath of the ultra-high voltage cable successively, and the normal use and service life of the cable are seriously affected. Therefore, developing a smooth aluminum sheath corrosion-resistant structure to improve the waterproof performance of the cable, optimize the electric field distribution, promote the environmental protection and solve the related problems of the buffer layer becomes an important subject to be solved in the field. The application number is CN201720878994.6, which discloses a smooth aluminum sheath ultra-high voltage power cable, comprising a conductor, three layers of co-extrusion inner shielding layers outside the conductor, an insulating layer and an insulating shielding layer, wherein a semiconductive buffer water blocking belt is arranged outside the insulating shielding layer, a smooth aluminum metal sleeve is arranged outside the semiconductive buffer water blocking belt, an anti-corrosion asphalt layer is coated outside the smooth aluminum metal sleeve, a non-metal protective layer is arranged outside the anti-corrosion asphalt layer, and a graphite coating is arranged outside the non-metal protective layer. The utility model can effectively reduce the outer diameter of the cable and the material loss from the angles of saving the material and guaranteeing the operation safety of the cable, has compact cable structure, realizes the design of light weight of the high-voltage cable and increases the transportation capacity of the cable, but has the defect that the device can not perform protection and adjustment on cables with different lengths when being used, so that the device has certain limitation when being used. Disclosure of utility model The invention aims to provide a smooth aluminum sheath anti-corrosion structure, which solves the problem that the device cannot perform protection and adjustment on cables with different lengths when in use, so that the device has certain limitation when in use. In order to solve the technical problems, the utility model is realized by the following technical scheme: The utility model relates to a smooth aluminum sheath anti-corrosion structure which comprises a telescopic outer tube assembly, wherein a telescopic middle tube assembly is arranged in the telescopic outer tube assembly in a limiting manner, a braking telescopic assembly is arranged at one end of the telescopic outer tube assembly in a limiting manner, and a telescopic inner tube assembly is arranged in the telescopic middle tube assembly in a sliding manner; The brake telescopic assembly comprises an assembly base, the assembly base is arranged on the outer side of an assembly threaded port in a limiting mode through an assembly port, a fixing notch is formed in the middle of the outer side of the assembly base, a pneumatic pump is fixedly arranged in the middle of the fixing notch, and a pushing assembly is arranged at the tail en