CN204205522U - High-tension cable enters location protective device - Google Patents

Abstract

The utility model provides a high-voltage cable entry section protection device. The steel bottom groove of the protection device is equipped with a fixing seat, and the fixing clip seat is connected with the cable fixing clip and the steel bottom groove with fastening bolts, so that the cable fixing clip, cable, fixing clip seat and steel bottom groove are integrated , The connection holes on both sides of the steel bottom tank are equipped with resin backing plates and connected with the steel cover shell with non-magnetic bolts, so that the steel bottom tank and the steel cover shell are connected as a whole. The protection device adopts a steel structure with high strength, and the production cost is greatly reduced compared with other materials; and there is no need to build a cable terminal station, which reduces the occupied area and avoids additional land acquisition.

Description

Protection device for high voltage cable entry section

technical field

The utility model relates to the field of power cables, in particular to a protection device for a high-voltage cable entry section.

Background technique

At present, when the overhead lines cannot meet the conditions in the high-voltage transmission line, the power cable has the performance of high-efficiency and reliable power supply, and can be laid below the ground surface so that it occupies less land, and has the advantages of beautifying the city and concealing safety. There is a high cost of power cables, and it becomes the preferred alternative equipment in the required line section. Once the power cable is damaged by external factors, it will lead to the scrapping of the cable in this area and high cable repair costs.

At present, when 110kV and above transmission lines are connected by overhead lines and cables enter the ground surface, the protection of the cable entry section is solved by building courtyard walls, enclosing the cables and terminals, that is, building terminal stations, which requires It occupies a part of the ground, and the utilization rate of the ground is low, and it is easy to be damaged. Therefore, how to ensure that the beginning and end of the power cable are successfully guided into and out of the laying of the ground surface from the overhead line is a problem to be solved.

Contents of the invention

The purpose of this utility model is to provide a high-voltage cable entry section protection device which uses a steel shield to avoid abnormal circulation in the cable sheath.

To achieve the above object, the technical solution of the utility model is:

A high-voltage cable entry section protection device, including a steel bottom tank, a steel cover shell, a cable fixing clip, a resin backing plate and a fixing clip seat, the steel bottom groove of the protection device is equipped with a fixing seat, and the fixing clip seat is used The fixing bolt is connected with the cable fixing clip and the steel bottom groove, so that the cable fixing clip, cable, fixing clip seat and steel bottom groove are integrated, and the connecting holes on both sides of the steel bottom groove are equipped with resin backing plates and non-magnetic The bolts are connected with the steel cover shell, so that the steel bottom groove and the steel cover shell are connected as a whole.

The positive effect of the utility model is:

1. The protective device adopts a steel structure with high strength, and the production cost is greatly reduced compared with other materials;

2. The protection device does not need to build a cable terminal station, which reduces the occupied area and avoids additional land acquisition;

3. The design of the protection device reduces the magnetic circuit loss caused by the grounding of the metal sheath;

4. The protection device can be disassembled and installed immediately during the inspection and maintenance of the power cable to avoid damage to the original.

Description of drawings

Figure 1. Schematic diagram of the installation of the protection device for the high-voltage cable entry section;

Figure 2. Schematic diagram of the cross-sectional structure of the protection device for the high-voltage cable entry section.

Detailed ways

Below in conjunction with accompanying drawing 1-2 further illustrate the specific embodiment of the present utility model.

Referring to Figure 1 and Figure 2, first install the steel bottom tank 1 in the reserved hole of the cement abutment 8, then lead the cable 4 out from the cable terminal 9, and put it into the fixing clip seat 7 on the steel bottom tank 1 , and fix it with the cable clamp 3 through the fastening bolt 10, and finally install the resin backing plate 5 on each fixing hole on both sides of the steel bottom groove 1, and fix the steel cover shell 2 with the non-magnetic bolt 6. Thereby avoiding the eddy current problem generated by the power cable in the rigid closed circuit.

Claims (1)

1. a high-tension cable enters location protective device, comprise steel kerve (1), steel lid shell (2), fastening clip for cable (3), resin backing plate (5) and fixing holder (7), it is characterized in that: steel kerve (1) is equipped with holder (7), fixing holder (7) fastening bolt (10) is connected with steel kerve (1) with fastening clip for cable (3), make fastening clip for cable (3), cable (4), fixing holder (7) and steel kerve (1) become as a whole, the connecting hole of steel kerve (1) both sides be equipped with resin backing plate (5) and be connected with steel lid shell (2) with without magnetic bolt (6), steel kerve (1) and steel lid shell (2) are connected as a single entity.