CN214707114U

CN214707114U - Protection structure for cable joint of power transmission and distribution line

Info

Publication number: CN214707114U
Application number: CN202120876164.6U
Authority: CN
Inventors: 李一卓; 高博; 韩功松; 常平
Original assignee: Xinye Power Supply Co Of State Grid Henan Electric Power Co
Current assignee: Xinye Power Supply Co Of State Grid Henan Electric Power Co
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-11-12
Anticipated expiration: 2031-04-27

Abstract

The utility model provides a power transmission and distribution lines cable joint protective structure belongs to power transmission and distribution lines cable joint fault protection technical field. A protection structure for a power transmission and distribution line cable joint comprises an inner shell and an outer shell, wherein the inner shell is cylindrical, and the outer shell is cuboid; the ports at the two ends of the inner shell are in closed fit with the cable; the ports at the two ends of the outer shell are matched with the ports at the two ends of the inner shell; a cable connector is arranged inside the inner shell; the outer surface of the inner shell is provided with a waterproof material; fireproof materials are filled between the inner shell and the outer shell; the outer surface of the shell is coated with a protective material layer. The utility model discloses simple to operate, can be under different environment safety and stability's use, promoted work efficiency.

Description

Protection structure for cable joint of power transmission and distribution line

Technical Field

The patent of the utility model relates to a transmission and distribution lines cable joint fault protection technical field, concretely relates to transmission and distribution lines cable joint protective structure.

Background

With the rapid development of social economy and the continuous improvement of living standard of people, the electricity consumption of residents continuously rises, so that the investment of China on the construction of a power grid is gradually increased, and the development of the power grid is comprehensively accelerated. At present, the overhead transmission line cannot meet the requirement of urban development planning to a certain extent. Therefore, the necessary underground cable line migration modification is performed on the overhead transmission line, so that one of important measures for effectively solving the problem of the overhead transmission line is provided. Compared with an overhead transmission line, the construction of the cable line is high in overall construction cost, but the cable line is mainly laid underground, so that the cable line does not occupy the ground space and is very favorable for attractive appearance. However, many cables are simultaneously distributed in the same cable tunnel, and the middle joints of the cables are affected by various factors, so that breakdown or explosion fire accidents can be inevitably caused, and damage can be caused to surrounding buildings and residents.

The utility model CN206594253U discloses a cable joint detection protection device, which comprises a flame-retardant baffle, a drying layer, a flame-retardant layer, a temperature monitoring device, a humidity monitoring device and a current detection device; the temperature monitoring device, the humidity monitoring device and the current detection device respectively monitor the temperature in the inner chamber, the humidity and whether electricity leaks at the joint. And sends the signal to a remote monitoring station. However, the device uses too many electronic devices, and the long-time use of the devices can cause the sensitivity of the devices to be reduced, and the monitoring data is not accurate enough, thereby causing the judgment errors of workers.

Disclosure of Invention

The utility model aims to solve the technical problem that a power transmission and distribution lines cable joint protective structure is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a transmission and distribution lines cable joint protective structure which characterized in that: the device comprises an inner shell and an outer shell, wherein the inner shell is cylindrical, and the outer shell is cuboid; the ports at the two ends of the inner shell are in closed fit with the cable; the ports at the two ends of the outer shell are matched with the ports at the two ends of the inner shell; a cable connector is arranged inside the inner shell; the outer surface of the inner shell is provided with a waterproof material; fireproof materials are filled between the inner shell and the outer shell; the outer surface of the shell is coated with a protective material layer.

Furthermore, the inner shell and the outer shell are respectively composed of an upper shell and a lower shell which are symmetrical, and through holes are respectively arranged at the joint of the upper shell and the lower shell.

Furthermore, the outer shell is a carbon steel outer shell, and the inner shell is a polyamide plastic inner shell.

Further, the waterproof material is a water-blocking tape; the fireproof material is an organic fireproof blocking material.

Further, the protective material layer is corrosion-resistant paint.

Further, the inner shell and the outer shell are fixedly connected through fasteners respectively.

Further, the fastener is a bolt, a nut and a washer.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses in cable joint place in the inner shell, because the structure of its double-deck protective housing, can effectively protect cable joint, reduce the influence of peripheral environment to cable joint, the inner shell adopts polyamide plastics inner shell, polyamide plastics rigidity is big, and intensity is high, has good heat resistance and electrical insulation, and the shell adopts the carbon steel shell, and carbon steel shell processing technology is good, and intensity is high, has good impact resistance, because the material constitution of inner shell and shell can both effectively avoid the enlargement of accident when the cable breaks down or explodes; the water blocking tape is wound on the outer surface of the inner shell, so that the cable joint can be effectively protected from being invaded by moisture, and the short circuit of a cable line caused by the moisture entering the cable joint is avoided; the organic fireproof blocking material filled between the inner shell and the outer shell can prevent the spread of fire when the fire happens; the surface of the shell is coated with a corrosion-resistant coating for protecting the shell from being corroded by acid-base substances in the surrounding environment. By the bolt, the nut and the packing ring carry out fixed connection to inner shell and shell respectively, prevent to cause the upper and lower two parts of inner shell and shell not hard up the drop long-time use.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1: the utility model discloses the sectional view of embodiment 1;

FIG. 2: the cross section structure chart of the embodiment 1 of the utility model;

FIG. 3: the utility model discloses the sectional view of embodiment 2;

the cable comprises 1-a cable, 2-corrosion-resistant coating, 3-organic fireproof blocking material, 4-a cable joint, 5-a water blocking tape, 6-a through hole and 7-a nut.

Detailed Description

For a better understanding of the present invention, the contents of the present invention will be further clarified below by referring to examples, but the present invention is not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.

Example 1

As shown in fig. 1 and 2, a protection structure for a power transmission and distribution line cable joint comprises a polyamide plastic inner shell and a carbon steel outer shell, wherein the inner shell and the outer shell are respectively formed by buckling an upper shell and a lower shell which are symmetrical; the shape of the inner shell is cylindrical, and the shape of the outer shell is cuboid; the ports at the two ends of the inner shell are in closed fit with the cable 1; the ports at the two ends of the outer shell are matched with the ports at the two ends of the inner shell; the cable joint 4 is arranged in the inner shell; the water blocking tape 5 is wound on the outer surface of the inner shell, so that the water blocking tape can reduce the water and moisture permeation of the cable, and the service life of the cable is prolonged; the organic fireproof blocking material 3 is filled between the inner shell and the outer shell, the organic fireproof blocking material is not solidified for a long time, the plasticity is good, and the blocking can be carried out randomly; the surface of the shell is coated with a layer of corrosion-resistant coating 2, and the coating is high-temperature resistant, acid-resistant and alkali-resistant, high in expansion coefficient, good in adhesive force, good in wear resistance, smooth in surface, impact-resistant and not easy to crack. The inner shell and the outer shell are fixedly connected through adhesive respectively.

Example 2

As shown in fig. 3, this embodiment is an improvement on embodiment 1, and is different from embodiment 1 in that: through holes 6 are respectively formed in the joints of the upper shell and the lower shell of the carbon steel outer shell and the polyamide plastic inner shell, bolts 7 penetrate through the through holes 6 to be sequentially connected with washers and nuts, and the nuts are screwed so as to respectively fix the inner shell and the outer shell.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a transmission and distribution lines cable joint protective structure which characterized in that: the device comprises an inner shell and an outer shell, wherein the inner shell is cylindrical, and the outer shell is cuboid; the ports at the two ends of the inner shell are in closed fit with the cable; the ports at the two ends of the outer shell are matched with the ports at the two ends of the inner shell; a cable connector is arranged inside the inner shell; the outer surface of the inner shell is provided with a waterproof material; fireproof materials are filled between the inner shell and the outer shell; the outer surface of the shell is coated with a protective material layer.

2. The protection structure for electric line cable joints according to claim 1, wherein: the inner shell and the outer shell are respectively composed of an upper shell and a lower shell which are symmetrical, and through holes are respectively arranged at the joints of the upper shell and the lower shell.

3. The protection structure for electric line cable joints according to claim 1, wherein: the outer shell is a carbon steel outer shell, and the inner shell is a polyamide plastic inner shell.

4. The protection structure for electric line cable joints according to claim 1, wherein: the waterproof material is a water-blocking tape; the fireproof material is an organic fireproof blocking material.

5. The protection structure for electric line cable joints according to claim 1, wherein: the protective material layer is corrosion-resistant paint.

6. The protection structure for electric line cable joints according to claim 1, wherein: the inner shell and the outer shell are fixedly connected through fasteners respectively.

7. The protection structure for electric line cable joints according to claim 6, wherein: the fastener is a bolt, a nut and a washer.