CN210628540U - Low-voltage cable drainage tool - Google Patents

Abstract

The utility model discloses a low-voltage cable drainage tool, which comprises a drainage cable, a crimping terminal, a hanging joint and a bus bar connecting terminal; one end of the compression joint terminal is connected with the drainage cable, and the other end of the compression joint terminal is detachably connected with the hanging connector or the busbar connecting terminal; an operator is connected with the low-voltage user side line in a hanging mode through the hanging connector according to working conditions and is connected with the busbar through the busbar connecting terminal. The low-voltage user end circuit can be accessed by the hanging connector in a hanging mode, and the purpose of carrying out bypass live-wire work on the low-voltage circuit can be achieved by butting the busbar connecting terminal with the busbar of the existing bypass cable. The method simplifies the operation steps, improves the working efficiency, can shorten the power failure times and time, reduces the power failure time and times of users, and improves the power supply reliability and the user satisfaction.

Description

Low-voltage cable drainage tool

Technical Field

The utility model belongs to drainage utensil for the electric power engineering especially relates to a low tension cable drainage instrument.

Background

Distribution bypass live working has been widely developed at home and abroad at present, research on a quick and safe distribution low-voltage cable drainage wire clamp has not been targeted at home and abroad at present, the current-stage distribution low-voltage cable access low-voltage overhead line generally adopts a 10kV bypass operation drainage wire clamp or a common parallel groove wire clamp mode for operation in practice, and the 10kV bypass operation drainage wire clamp can only reach 200A due to the maximum rated current. Taking a 0.4kV overhead line as an example, the through-current requirement of the rated current 630A needs to be met, so the requirement of using the overhead line on a low-voltage line basically cannot be met, the overhead line is limited in use, and the common parallel groove clamp has the problems of complex installation, time consumption and the like.

In order to improve power supply reliability, power supply units in various places at present widely carry out bypass live-line work, in the process of bypass live-line work carried out by equipment such as a bypass load transfer vehicle or a power generation vehicle, a bypass leading-out cable with a common drainage wire clamp (copper terminal mode) at one end is usually adopted at a 0.4kV leading-out end of the power supply unit to be connected with a 0.4kV cabinet to be overhauled or emergent to realize uninterrupted power supply, in special occasions, the situation that the 0.4kV leading-out end of the bypass load transfer vehicle or the power generation vehicle needs to directly carry out uninterrupted power supply on a 0.4kV overhead line often occurs, and the common drainage wire clamp adopted at present cannot be butted quickly and safely, so that power failure time is overlong and operation steps are.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low tension cable drainage instrument of simple operation, improvement operating efficiency to prior art's weak point.

The utility model provides a low-voltage cable drainage tool, which comprises a drainage cable, a crimping terminal, a hanging joint and a bus connecting terminal; one end of the compression joint terminal is connected with the drainage cable, and the other end of the compression joint terminal is detachably connected with the hanging connector or the busbar connecting terminal; an operator is connected with the low-voltage user side line in a hanging mode through the hanging connector according to working conditions and is connected with the busbar through the busbar connecting terminal.

In one embodiment, the crimping terminal is a whole piece and comprises a crimping pipe and a threaded head, wherein the outer wall of the threaded head is provided with a positioning hole, and the conductor of the drainage cable is inserted into the crimping pipe to be compressed.

Preferably, the hanging joint is a T-shaped head and comprises a head part and a rod part, an insulating sleeve is coated outside the head part, a hanging groove is formed in the inner end of the rod part, an axial hole is formed in the outer end of the rod part, and a threaded hole which is arranged along the radial direction is formed in the rod body at the axial hole; the screw head is inserted into the axial hole and is pressed and connected with the positioning hole through a screw screwed into the screw hole.

Furthermore, the rod part of the hanging joint is a screw rod.

In order to improve the insulation effect, an insulation shed is arranged outside the hanging connector, a nut seat is embedded at the end part of the insulation shed, and the hanging connector is connected into the nut seat through a rod part of the hanging connector in a threaded mode and can move axially relative to the insulation shed.

In a specific embodiment, the busbar connecting terminal is an integral piece and comprises a threaded pipe and a connecting seat, wherein the connecting seat is an L-shaped seat body, one end of the connecting seat is connected with the threaded pipe, and the other end of the connecting seat is provided with a through hole; the busbar connecting terminal is connected with the thread head of the crimping terminal through the thread pipe.

The utility model discloses when putting into use, according to the operating mode needs, accessible attach head inserts low pressure user end circuit with the mode that articulates, also can be through female butt joint of arranging connecting terminal and the female row of current bypass cable to reach the purpose of carrying out bypass live working on the low voltage circuit. The power supply system has the advantages of simplifying operation steps, improving working efficiency, shortening power failure times and power failure times, effectively reducing power failure time and power failure times of users, and improving power supply reliability and user satisfaction.

Drawings

Fig. 1 is a schematic view of a hitching state according to a preferred embodiment of the present invention.

Fig. 2 is an enlarged view of the fitting of the hanger and the crimp terminal in the preferred embodiment.

Fig. 3 is a schematic diagram illustrating a bus bar connection state according to the preferred embodiment.

Fig. 4 is an enlarged view illustrating the assembly of the bus bar connecting terminal and the crimp terminal in fig. 3.

Sequence numbers of the drawings:

1-a drainage cable;

2-crimping terminal, 21-crimping pipe, 22-screw head;

3-hanging connector, 31-head, 32-rod, 33-insulating sleeve;

4, insulating umbrella skirts;

5-nut seat;

6-busbar connecting terminal, 61-screwed pipe, 62-connecting seat.

Detailed Description

As shown in fig. 1, the low voltage cable drainage tool disclosed in this embodiment includes a drainage cable 1, a pressure welding pipe 2 and a hanging connector 3. Taking the case of being used for a 0.4kV user end line as an example, the drainage cable 1 is selected as a 0.4kV cable, an inner core is exposed, and the inner core is tightly pressed with the hanging component after being exposed.

As shown in fig. 2, the crimp terminal 21 is a unitary member including a crimp tube 21 and a screw head 22, an outer wall of which is provided with a positioning hole. The hanging joint 3 is a T-shaped head and comprises a head part 31 and a rod part 32, and an insulating sleeve 33 is coated outside the head part to improve the operation safety; the rod part 32 is a screw rod, the inner end of the rod part is provided with a hanging groove, the outer end of the rod part is provided with an axial hole, and a threaded hole which is arranged along the radial direction is arranged on the rod body at the axial hole. The crimping terminal is inserted into the axial hole with its screw head, and is pressed tightly to prevent the occurrence of loosening by screwing in the extended positioning hole of the screw in the threaded hole, thereby completing the assembly of the hitching assembly 2. The hanging connection component 2 is connected with the inner core of the drainage cable 1 in a pressing mode through a pressing connection pipe of a pressing connection terminal in a pressing mode, and is connected into a low-voltage user end circuit through a hanging connector. And meanwhile, in order to improve the insulating property, an insulating umbrella skirt 4 is arranged at the connecting end of the drainage cable and the hanging connection assembly. The end part of the insulating umbrella skirt 4 is embedded with a nut seat 5 matched with the rod part, and the hanging joint is connected in the nut seat through the rod part in a threaded mode and can move axially relative to the insulating umbrella skirt, so that the insulating umbrella skirt 4 can seal the connection part of the drainage cable and the hanging component, and the insulating protection performance is improved.

As shown in fig. 3, the busbar connection assembly includes a crimp terminal 2 and a busbar connection terminal 6. The busbar connecting terminal 6 is an integral piece and comprises a threaded pipe 61 and a connecting seat 62, the connecting seat is an L-shaped seat body, one end of the connecting seat is connected with the threaded pipe, and the other end of the connecting seat is provided with a through hole so as to be connected with a bypass. The crimp terminal is screwed into the threaded tube with its threaded head. The busbar connecting assembly 6 is in compression joint with the drainage cable through a compression joint pipe of a compression joint terminal.

When the busbar needs to be connected, the screw in the threaded hole is screwed out, the hanging joint is rotated in the opposite direction, after the hanging joint is unscrewed, the busbar connecting terminal is replaced, and the screw is screwed in again for locking. When the bus bar connecting terminal is used, the L-shaped seat body on the bus bar connecting terminal ensures the contact area with the bus bar, and the through hole is used for penetrating the fastener to ensure the reliable connection, thereby ensuring the good contact with the bus bar.

The utility model discloses under the prerequisite of utilizing current bypass equipment cable, the mode that the accessible articulates inserts low pressure user side circuit, female connecting terminal of arranging of accessible and current bypass cable butt joint to reach and develop bypass live working's purpose on reaching 630A's low pressure circuit to the load. The power supply system has the advantages of simplifying operation steps, improving working efficiency, shortening power failure times and power failure times, effectively reducing power failure time and power failure times of users, and improving power supply reliability and user satisfaction. Has important significance for fulfilling social responsibility and improving the high-quality service level. The safety risk and the labor intensity of the operating personnel can be greatly reduced, and the safety benefit is obviously improved. The GDP efficiency is calculated according to 20 yuan at 1 degree, and the social benefit created by the project achievement can reach more than one hundred million yuan in 1 year.

Claims (6)

1. A low-voltage cable drainage tool is characterized in that: the device comprises a drainage cable, a crimping terminal, a hanging connector and a busbar connecting terminal; one end of the compression joint terminal is connected with the drainage cable, and the other end of the compression joint terminal is detachably connected with the hanging connector or the busbar connecting terminal; an operator is connected with the low-voltage user side line in a hanging mode through the hanging connector according to working conditions and is connected with the busbar through the busbar connecting terminal.

2. The low voltage cable drainage tool of claim 1, wherein: the crimping terminal is an integral piece and comprises a crimping pipe and a threaded head, a positioning hole is formed in the outer wall of the threaded head, and a conductor of the drainage cable is inserted into the crimping pipe to be compressed.

3. The low voltage cable drainage tool of claim 2, wherein: the hanging joint is a T-shaped head and comprises a head part and a rod part, an insulating sleeve is coated outside the head part, a hanging groove is formed in the inner end of the rod part, an axial hole is formed in the outer end of the rod part, and a threaded hole which is arranged along the radial direction is formed in the rod body at the axial hole; the screw head is inserted into the axial hole and is pressed and connected with the positioning hole through a screw screwed into the screw hole.

4. A low voltage cable drainage tool as claimed in claim 3, wherein: the rod part of the hanging joint is a screw rod.

5. The low voltage cable drainage tool of claim 4, wherein: an insulating umbrella skirt is arranged outside the hanging connector, a nut seat is embedded at the end part of the insulating umbrella skirt, and the hanging connector is connected into the nut seat through a rod part of the hanging connector in a threaded mode and can move axially relative to the insulating umbrella skirt.

6. The low voltage cable drainage tool of claim 2, wherein: the bus bar connecting terminal is an integral piece and comprises a threaded pipe and a connecting seat, the connecting seat is an L-shaped seat body, one end of the connecting seat is connected with the threaded pipe, and the other end of the connecting seat is provided with a through hole; the busbar connecting terminal is connected with the thread head of the crimping terminal through the thread pipe.

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