CN203103760U - A bypass connecting device used between an uninterruptedly-operating European ring main unit and an uninterruptedly-operating American ring main unit - Google Patents

Abstract

The utility model discloses a bypass connection device for non-stop operation between European-style and American-style ring network cabinets. unit, bypass switch and second flexible cable connection unit. The European-style cable terminal of the utility model is composed of a detachable T-shaped sleeve and a cable terminal. The cable with the cable terminal can be introduced from the wire inlet hole of the European-style ring network cabinet first, and then it can be inserted through the T-shaped sleeve. The lower port of the vertical pipe part of the pipe is inserted, which greatly facilitates the connection of the European-style cable terminal and the European-style 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 bypass connection device for non-stop operation between European-style and American-style ring network cabinets

technical field

The utility model relates to a bypass connection device used for non-stop operation between European-style and American-style ring network cabinets.

Background technique

When the underground cable between the two ring network cabinets is abnormal and needs to be repaired, after laying the bypass connection device on the ground and taking safety protection measures, the bypass connection device replaces the underground cable to supply power to the ring network cabinet, so as to achieve non-stop (less power outage) maintenance the goal of.

The bypass connection device is mainly composed of a bypass switch, a cable terminal connected to the cable sleeve of the ring network cabinet at one end, and a flexible cable connected with the bypass switch at the other end.

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 connection device, due to the small space of the inlet hole of the European-style ring network cabinet, and the large volume of the cable terminal enclosed with the bypass connection device, it is impossible to enter the European-style ring network smoothly through the wire inlet hole. cabinet, which makes it more difficult to connect the bypass connection device to the European-style ring network cabinet. Often, the effective connection between the ring network cabinet and the bypass connection device can not be implemented to expand the scope of work, which brings inconvenience to the maintenance operation without power failure.

At the same time, the grounding of the bypass connection device is mainly realized through the grounding wire that is installed on the metal shielding shell of the cable terminal and connected to the ground. , Convenient construction, and this grounding method makes it necessary to erect an additional grounding wire when laying the bypass connection device, 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 simple in structure and easy to use bypass connection device for non-stop operation between European-style and American-style ring network cabinets in order to solve the above problems.

The purpose of this utility model is achieved in that:

The utility model relates to a bypass connection device for non-stop operation between European-style and American-style ring network cabinets. The bypass connection device is arranged between the European-style ring network cabinet and the American-style ring network cabinet, and includes a first flexible cable connection device. 1. A second flexible cable connection device and a bypass switch for shell grounding, one end of the first flexible cable connection device is connected to the European-style ring network cabinet, the other end is connected to the bypass switch, and the second flexible cable is connected to One end of the device is connected to the American-style ring network cabinet, and the other end is connected to the bypass switch. The first flexible cable connection device includes a flexible cable and European-style cable terminals and plug-in quick connectors respectively arranged at both ends of the flexible cable. , the second flexible cable connection device includes a flexible cable and American cable terminals and plug-in quick connectors respectively arranged at both ends of the flexible cable, the flexible cable includes a sheath, a tinned copper wire shielding layer, Inner sheath and tinned copper conductor, the European-style cable terminal plugged on the European-style cable sleeve of the European-style ring network cabinet, the European-style cable sleeve includes a base and bolts arranged at the front end of the base, the The American-style cable terminal is plugged on the American-style cable casing of the American-style ring network cabinet, and the plug-in quick connector is plugged on the inlet and outlet casing of the bypass switch, wherein,

The European-style 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 The base of the bushing is plugged into the left side of the horizontal pipe part, and the bolt is horizontally placed in the horizontal pipe part, the cable terminal is inserted into the lower port of the vertical pipe part and Sleeved on the bolt, the insulating plug is plugged into the right side of the transverse pipe, and the insulating plug is screwed to the front end of the bolt;

The American-style cable terminal includes an elbow sleeve, a cable crimping terminal and a plug-in rod provided at one end of the flexible cable, the cable crimping terminal is inserted through the lower port of the elbow sleeve, and the plug-in The rod is inserted into the upper port of the elbow sleeve and one end thereof is fixed on the cable crimping terminal, and the other end protrudes from the upper port of the elbow sleeve;

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 and placed in the upper cavity, the connection part is engaged with the lower port of the through hole and placed in the lower cavity, and the tinned copper conductor at one end of the flexible cable is plugged into the In the wiring part, and the tinned copper wire shielding layer of the flexible cable is sandwiched between the rubber core and the metal shell.

The aforementioned bypass connection device for non-stop operation between European-style and American-style ring network cabinets, wherein the plug-in rod includes an end-to-end arc extinguishing rod and a conductive rod, and the cable crimping terminal includes a wiring part and a Connecting part, the tinned copper conductor at one end of the flexible cable is plugged into the wiring part, the connecting part is screwed to one end of the conductive rod, and one end of the arc extinguishing rod protrudes from the elbow sleeve the upper port.

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 characteristic that the shielded wire of the flexible cable is fully connected 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 set up an additional grounding wire, which is convenient for the bypass connection device. Construction and non-stop maintenance operations are also applicable to the situation where the space of the ring main unit is small, which greatly improves the reliability of line power supply.

It can be seen that the bypass connection device of the utility model has a simple structure, is easy 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;

Fig. 2 is a structural schematic diagram of the first flexible cable connection device in the utility model;

Fig. 3 is a schematic structural view of the second flexible cable connection device in the present invention.

Detailed ways

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

Please refer to Figure 1, which shows the bypass connection device of the utility model for non-stop operation between European-style and American-style ring network cabinets. The bypass connection device is located between European-style ring network cabinets 1 and American-style ring network cabinets 5 room, including the first flexible cable connection device 6, the second flexible cable connection device 7 and the bypass switch 3 for earthing the shell, one end of the first flexible cable connection device 6 is connected to the European-style ring network cabinet 1, and the other end is connected to the bypass switch 3 One end of the second flexible cable connection device 7 is connected to the American ring network cabinet 5, and the other end is connected to the bypass switch 3.

Please refer to Fig. 2, the first flexible cable connection device is shown in the figure, the first flexible cable connection device 6 includes a European-style cable terminal, a flexible cable 9 and a plug-in quick connector 2, and the flexible cable 9 includes a sheath from the outside to the inside 94. Tinned copper wire shielding layer 93, inner sheath 92 and tinned copper conductor 91, the European-style cable terminal is inserted on the European-style cable casing of the European-style ring network cabinet 1, and the European-style cable casing includes a base 11 and is located on The bolt 12 at the front end of the base 11 and the plug-in quick connector 2 are plugged into the inlet and outlet bushing 31 of the bypass switch 3;

The European-style cable terminal includes a T-shaped sleeve 4, a cable terminal 44 located at one end of the flexible cable 9, and an insulating plug 45. The T-shaped sleeve 4 includes a horizontal pipe portion 41 and a vertical pipe portion 42 that communicate with each other. The inner cavity at the junction of the pipe part 41 and the vertical pipe part 42 is a square hole 43; the base 11 of the European-style cable bushing is inserted on the left side of the horizontal pipe part 41, and the bolt 12 is horizontally placed in the horizontal pipe part 41; the cable terminal 44 is inserted from the lower port of the vertical pipe portion 42 and placed in the square hole 43, the cable terminal 44 is sleeved on the bolt 12; the insulating plug 45 is inserted into the horizontal pipe portion 41 On the right side, and the top surface of the insulating plug 45 is provided with an internally threaded hole 46 matching the external thread of the bolt 12, and the front end of the bolt 12 is screwed into the internally threaded hole 46;

The plug-in quick connector 2 includes a rubber core 21, a metal shell 22 and a center needle 23 sleeved on the outside of the rubber core 21, and the rubber core 21 includes an upper cavity 211 and a lower cavity 212 that communicate 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 central pin 23 includes a pin portion 231 and a connecting portion 232, and the outer diameter of the connecting portion 232 is larger than the inner diameter of the through hole 213. The lower port of the through hole 213 is inserted into and placed in the upper cavity 211, the connection part 232 is engaged with the lower port of the through hole 213 and placed in the lower cavity 212, and the tinned copper conductor 91 of the flexible cable 9 is inserted into the In the wiring part 232, and the tinned copper wire shielding layer 93 of the flexible cable 9 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 231 is inserted 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.

Please refer to Fig. 3, the second flexible cable connection device is shown in the figure, the second flexible cable connection device 7 includes an American-style cable terminal, a flexible cable 9 and a plug-in quick connector 2, and the American-style cable terminal is plugged into the American-style ring network On the American-style cable bushing of the cabinet 5, the plug-in quick connector 2 is plugged on the inlet and outlet bushing 31 of the bypass switch 3, wherein the flexible cable 9 and the plug-in quick connector 2 are connected to the first flexible cable connection device 6 same as

The American cable terminal includes an elbow sleeve 81, a cable crimping terminal and a plug-in lever. The cable crimping terminal includes a connecting part 83 and a connecting part 82. The tinned copper conductor 91 at one end of the flexible cable 9 is plugged into the connecting part 83. The cable crimping terminal is inserted through the lower port of the elbow sleeve 81, and the plug-in rod includes an end-to-end arc extinguishing rod 85 and a conductive rod 84, and the plug-in rod is inserted into the upper port of the elbow-shaped sleeve 81, and the conductive rod 84 The right end is screwed to the connecting portion 82 , and the left end of the arc extinguishing rod 82 protrudes from the upper port of the elbow sleeve 81 .

When the European-style cable terminal of the first flexible cable connection device 6 is connected to the European-style ring network cabinet 1, the following operations need to be performed: first connect the cable terminal 44 of the flexible cable 9 from the incoming hole of the European-style ring network cabinet 1 Introduce it, then insert it from the lower port of the vertical tube portion 42 of the T-shaped sleeve 4, so that the cable terminal 44 is located in the square hole 43, and insert the left port of the horizontal tube portion 41 of the T-shaped sleeve 4 into the On the base 11 of the American cable sleeve, the bolt 12 at the front end of the base 11 is inserted through the cable terminal 44 and is located in the horizontal tube part 41, and finally the insulating plug 45 is inserted on the right side of the horizontal tube part 41 port, and the front end of the bolt 12 is screwed into the internally threaded hole 46, thereby completing the connection between the European-style cable terminal in the utility model and the European-style cable casing of the European-style ring network cabinet 3.

And when the U.S.-style cable terminal of the second flexible cable connection device 7 is connected to the U.S.-style ring network cabinet 5, it is only necessary to insert the U.S.-style cable terminal on the U.S.-style cable sleeve of the U.S.-style ring network cabinet 5.

Since the tinned copper wire shielding wire 93 of the flexible cable 9 is fully connected, the grounding point can be connected from the European/American cable terminal end of the flexible cable 9 through the metal shell 22 of the plug-in quick connector 2 and the inlet and outlet sleeves The metal sheath 311 of 31 leads to the casing of the bypass switch 3, and the casing of the bypass switch 3 itself is grounded, so that there is no need to erect an additional grounding wire, which is convenient for the connection construction of the bypass connection device 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 (2)

1. A bypass connection device for non-stop operation between European-style and American-style ring network cabinets. Two flexible cable connection devices and a bypass switch for shell grounding, one end of the first flexible cable connection device is connected to the European-style ring network cabinet, the other end is connected to the bypass switch, and one end of the second flexible cable connection device is It is connected to the American-style ring network cabinet, and the other end is connected to the bypass switch. The first flexible cable connection device includes a flexible cable and European-style cable terminals and plug-in quick connectors respectively arranged at both ends of the flexible cable. The second flexible cable connection device includes a flexible cable and American cable terminals and plug-in quick connectors respectively arranged at both ends of the flexible cable. The flexible cable includes a sheath, a tinned copper wire shielding layer, an inner sheath Layer and tinned copper conductor, the European-style cable terminal plugged on the European-style cable sleeve of the European-style ring network cabinet, the European-style cable sleeve includes a base and bolts arranged at the front end of the base, the American-style cable The terminal is plugged on the American cable bushing of the American ring network cabinet, and the plug-in quick connector is plugged on the inlet and outlet bushing of the bypass switch, characterized in that, The European-style 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 The base of the bushing is plugged into the left side of the horizontal pipe part, and the bolt is horizontally placed in the horizontal pipe part, the cable terminal is inserted into the lower port of the vertical pipe part and Sleeved on the bolt, the insulating plug is plugged into the right side of the transverse pipe, and the insulating plug is screwed to the front end of the bolt; The American-style cable terminal includes an elbow-shaped sleeve, a cable crimping terminal and a plug-in rod provided at one end of the flexible cable, the cable crimping terminal is inserted through the lower port of the elbow-shaped sleeve, and the plug-in The rod is inserted into the upper port of the elbow sleeve and one end thereof is fixed on the cable crimping terminal, and the other end protrudes from the upper port of the elbow sleeve; 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 and placed in the upper cavity, the connection part is engaged with the lower port of the through hole and placed in the lower cavity, and the tinned copper conductor at one end of the flexible cable is plugged into the In the wiring part, and the tinned copper wire shielding layer of the flexible cable is sandwiched between the rubber core and the metal shell. 2. A bypass connection device for non-stop operation between European-style and American-style ring network cabinets as claimed in claim 1, wherein the plug-in rods include end-to-end arc extinguishing rods and conductive rods, so that The cable crimping terminal includes a connection part and a connection part, the tinned copper conductor at one end of the flexible cable is plugged into the connection part, the connection part is screwed to one end of the conductive rod, and the arc extinguishing rod One end protrudes from the upper port of the elbow sleeve.

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