CN203103899U - A flexible cable connecting device used for a European ring main unit - Google Patents

Abstract

The utility model discloses a flexible cable connection device for a European-style ring network cabinet, which comprises a cable terminal, a flexible cable and a plug-in quick joint. The quick connector is plugged into the inlet and outlet bushing of the bypass switch. The cable terminal in the utility model is composed of a detachable T-shaped sleeve and a cable terminal. During construction, the cable with the cable terminal is first introduced from the inlet hole of the European-style ring network cabinet, and then it is inserted from the T The lower port of the vertical tube part of the type sleeve is inserted, which greatly facilitates the connection of the cable terminal and the cable sleeve. The utility model utilizes the characteristic that the shielding wire of the flexible cable is fully connected to lead the grounding point from the cable terminal to the bypass switch, without additional grounding wires. The flexible cable connecting device of the utility model has the advantages of simple structure, convenient use, reduced working range, convenient maintenance without power failure, and improved reliability of line power supply.

Description

A flexible cable connection device for European ring network cabinet

technical field

The utility model relates to a flexible cable connection device for a European-style ring network cabinet.

Background technique

When the underground cable between the two ring network cabinets is abnormal and needs to be repaired, after laying the bypass cable on the ground and taking safety protection measures, the bypass cable replaces the underground cable to supply power to the ring network cabinet, so as to achieve the purpose of maintenance without power failure (less power failure) .

At present, the cable bushings in the European-style ring network cabinet mostly use fully insulated, fully enclosed, and fully sealed cable terminals, which cannot be separated from the cables connected to them.

When laying the bypass cable, due to the small space of the inlet hole of the European-style ring network cabinet, and the large size of the cable terminal enclosed with the bypass cable, it is impossible to enter the European-style ring network cabinet through the wire inlet hole smoothly. As a result, it is more difficult to connect the bypass cable to the European-style ring network cabinet, and the scope of work is often expanded due to the inability to implement effective connection between the ring network cabinet and the bypass cable, which brings inconvenience to maintenance operations without power failure.

At the same time, the grounding of the bypass cable is mainly realized through the grounding wire connected to the ground on the metal shielding shell of the cable terminal. Construction, and such a grounding method makes it necessary to erect an additional grounding wire when laying the bypass cable, which increases the construction time and difficulty, and brings inconvenience to the maintenance operation without power failure.

Contents of the invention

The purpose of this utility model is to provide a flexible cable connection device for European-style ring network cabinets with simple structure and convenient use in order to solve the above problems.

The purpose of this utility model is achieved in that:

The utility model relates to a flexible cable connection device for a European-style ring network cabinet, comprising a cable terminal, a flexible cable and a plug-in quick connector, and the cable terminal and the plug-in quick connector are respectively arranged on two ends of the flexible cable. The flexible cable includes a sheath, a tinned copper wire shielding layer, an inner sheath and a tinned copper conductor from the outside to the inside, and the cable terminal is plugged into the cable sleeve of the European ring network cabinet. The cable bushing includes a base and bolts arranged at the front end of the base, and the plug-in quick connector is plugged into the inlet and outlet bushing of the bypass switch, wherein:

The cable terminal includes a T-shaped sleeve, a cable terminal provided at one end of the flexible cable, and an insulating plug. The T-shaped sleeve includes a horizontal pipe portion and a vertical pipe portion that communicate with each other. The cable sleeve The base of the pipe is plugged into the left side of the horizontal pipe part, and the bolt is horizontally placed in the horizontal pipe part, and the cable terminal is inserted and sleeved from the lower port of the vertical pipe part. Connected to the bolt, the insulating plug is plugged into the right side of the transverse tube, and the insulating plug is screwed to the front end of the bolt;

The plug-in quick connector includes a rubber core, a metal shell set outside the rubber core, and a center pin. The rubber core includes upper and lower cavities that communicate with each other through through holes, and the inner diameter of the through hole Both are smaller than the inner diameters of the upper and lower cavities, the central pin includes a pin part and a wiring part, and the outer diameter of the wiring part is larger than the inner diameter of the through hole, and the pin part is connected from the bottom of the through hole The port is inserted into and placed in the upper cavity, the wiring part is engaged with the lower port of the through hole and placed in the lower cavity, and the tinned copper conductor at the other end of the flexible cable is plugged into the The tinned copper wire shielding layer of the flexible cable is sandwiched between the rubber core and the metal shell.

The cable terminal in the utility model is composed of a detachable T-shaped sleeve and a cable terminal. During construction, the cable with the cable terminal is first introduced from the inlet hole of the European-style ring network cabinet, and then it is inserted from the T The lower port of the vertical pipe part of the type casing is inserted, which greatly facilitates the connection between the cable terminal and the cable casing of the European-style ring network cabinet.

At the same time, the utility model utilizes the characteristics of full-line connection of the flexible cable shielding wire to lead the grounding point from the cable terminal to the bypass switch. Since the bypass switch itself is grounded, there is no need to erect an additional grounding wire, which facilitates the construction of the bypass cable. And non-stop maintenance operations, and it is also suitable for the case where the space of the ring network cabinet is small, which greatly improves the reliability of the line power supply.

It can be seen that the flexible cable connection device of the utility model has a simple structure, is convenient to use, reduces the scope of work, facilitates non-stop maintenance operations, and improves the reliability of line power supply.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Please refer to Fig. 1, the utility model is used for the flexible cable connection device of European-style ring main unit, comprises cable terminal, flexible cable 1 and plug-in quick joint 2, and flexible cable 1 includes sheath 14, tinned copper from outside to inside Wire shielding layer 13, inner sheath 12 and tinned copper conductor 11, the cable terminal is plugged on the cable casing of the European ring network cabinet, the cable casing includes a base 81 and a bolt 82 arranged at the front end of the base 81, the plug The pull-out quick connector 2 is plugged into the inlet and outlet bushing 31 of the bypass switch 3;

The cable terminal includes a T-shaped sleeve 5, a cable terminal 71 located at one end of the flexible cable 1, and an insulating plug 6. The T-shaped sleeve 5 includes a horizontal tube portion 51 and a vertical tube portion 52 that communicate with each other. The inner cavity at the intersection of the vertical pipe part 51 and the vertical pipe part 52 is a square hole 53; the base 81 of the cable sleeve is plugged into the left side of the horizontal pipe part 51, and the bolt 82 is horizontally placed in the horizontal pipe part 51 The cable terminal 71 is inserted through the lower port of the vertical pipe part 52 and placed in the square hole 53, the cable terminal 71 is sleeved on the bolt 82; the insulating plug 6 is plugged in on the right side of the horizontal pipe part 51 , and the top surface of the insulating plug 6 is provided with an internally threaded hole 61 matching the external thread of the bolt 82, and the front end of the bolt 82 is screwed into the internally threaded hole 61;

The plug-in quick connector 2 includes a rubber core 21, a metal shell 22 sleeved on the outside of the rubber core 21, and a center needle 4. The rubber core 21 includes an upper cavity 211 and a lower cavity 212 communicated with each other through a through hole 213, and through The inner diameters of the holes 213 are respectively smaller than the inner diameters of the upper cavity 211 and the lower cavity 212. The center pin 4 includes a pin part 41 and a connecting part 42, and the outer diameter of the connecting part 42 is larger than the inner diameter of the through hole 213. The pin part 41 is connected from the The lower port of the through hole 213 is inserted into and placed in the upper cavity 211, the connection part 42 is engaged with the lower port of the through hole 213 and placed in the lower cavity 212, and the tinned copper conductor 11 of the flexible cable 1 is inserted into the In the wiring part 42, and the tinned copper wire shielding layer 13 of the flexible cable 1 is sandwiched between the rubber core 21 and the metal shell 22, the inlet and outlet sleeves 31 of the bypass switch 3 include an inner core 312 and an inner core 312 The outer metal sheath 311, the pin part 41 is plugged into the inner core 312, the metal sheath 311 is embedded between the rubber core 21 and the metal shell 22, the metal sheath 311 is connected with the shell of the bypass switch 3, and the bypass The case of switch 3 is grounded.

During construction, the flexible cable 1 with the cable terminal 71 is first introduced from the wire inlet hole of the European-style ring network cabinet, and then inserted from the lower port of the vertical pipe part 52 of the T-shaped sleeve 5, so that the cable terminal 71 71 is located in the square hole 53, insert the left port of the T-shaped sleeve 5 transverse tube portion 51 on the base 81 of the cable sleeve, so that the bolt 82 at the front end of the base 81 is inserted through the cable terminal 71 and It is located in the horizontal pipe part 51, and finally the insulating plug 6 is plugged into the right port of the horizontal pipe part 51, and the front end of the bolt 82 is screwed into the internal threaded hole 61, thus completing the utility model. The connection between the cable terminal and the cable casing of the European ring network cabinet.

At the same time, since the tinned copper wire shielding wire 13 of the flexible cable 1 is fully connected, the grounding point can be passed from the cable terminal end of the flexible cable 1 through the metal shell 22 of the plug-in quick connector 2 and the inlet and outlet sleeves 31 The metal sheath 311 of the bypass switch 3 leads to the shell of the bypass switch 3, and the shell of the bypass switch 3 itself is grounded, so that there is no need to erect an additional grounding wire, which is convenient for bypass cable construction and maintenance without power failure.

The above embodiments are only for illustrating the utility model, rather than limiting the utility model. Those skilled in the art can also make various transformations or modifications without departing from the spirit and scope of the utility model. Therefore, all equivalent technical solutions should also belong to the category of the present utility model, and should be defined by each claim.

Claims (1)

1. A flexible cable connection device for a European-style ring network cabinet, comprising a cable terminal, a flexible cable and a plug-in quick connector, and the cable terminal and the plug-in quick connector are respectively arranged at two ends of the flexible cable, The flexible cable includes a sheath, a tinned copper wire shielding layer, an inner sheath, and a tinned copper conductor from the outside to the inside. The cable terminal is plugged into the cable sleeve of the European-style ring network cabinet. The cable The bushing includes a base and a bolt arranged at the front end of the base, and the plug-in quick connector is plugged into the inlet and outlet bushing of the bypass switch. It is characterized in that, The cable terminal includes a T-shaped sleeve, a cable terminal provided at one end of the flexible cable, and an insulating plug. The T-shaped sleeve includes a horizontal pipe portion and a vertical pipe portion that communicate with each other. The cable sleeve The base of the pipe is plugged into the left side of the horizontal pipe part, and the bolt is horizontally placed in the horizontal pipe part, and the cable terminal is inserted and sleeved from the lower port of the vertical pipe part. Connected to the bolt, the insulating plug is plugged into the right side of the transverse tube, and the insulating plug is screwed to the front end of the bolt; The plug-in quick connector includes a rubber core, a metal shell set outside the rubber core, and a center pin. The rubber core includes upper and lower cavities that communicate with each other through through holes, and the inner diameter of the through hole Both are smaller than the inner diameters of the upper and lower cavities, the central pin includes a pin part and a wiring part, and the outer diameter of the wiring part is larger than the inner diameter of the through hole, and the pin part is connected from the bottom of the through hole The port is inserted into and placed in the upper cavity, the wiring part is engaged with the lower port of the through hole and placed in the lower cavity, and the tinned copper conductor at the other end of the flexible cable is plugged into the The tinned copper wire shielding layer of the flexible cable is sandwiched between the rubber core and the metal shell.

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