Method for parallel-connection network access of cable branch box or ring main unit and corresponding shunt device
A cable and cable core technology, applied in circuits, electrical components, conductive connections, etc., can solve problems such as economic losses, casualties, power grid blackouts, etc., and achieve the effects of simple operation, good rounding effect, and stable rounding process.
Active Publication Date: 2015-09-09
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0002] At present, the cable branch box and the ring network cabinet are the main electrical equipment for the distribution of power supply lines in cities in my country. In actual work, both the cable branch box and the ring network cabinet are connected to the power supply line in series, resulting in the need for the entire power grid when they are repaired or replaced. Power failure affects daily life and work, causing economic losses; at the same time, there are two incoming and returning cables in the cable branch box and the ring network cabinet. The power supply can only be restored after the two cables are connected, which increases the workload and In addition, when the cable of a certain user is withdrawn during the live operation, if the cable entering and returning to the power grid is removed by mistake, it will cause casualties, cause a sudden power failure, affect daily life, and cause economic losses
When the cable branch boxes close to the two power sources fail, it will also affect the power supply of the whole line, and the power supply reliability is not high
Method used
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[0037] This embodiment discloses a T-shaped shunt crimping tube and its rounding and crimping tools, which are used for crimping the T-shaped shunt crimping tube and the cable core of the main power supply cable into one body.
[0038] Such as figure 1 , figure 2 As shown, the T-shaped shunt crimping tube 1 is a metal integral part, the cross-sectional shape of the head is C-shaped, and the rod part is a hollow tube for crimping the shunt cable. The rounding tool 2 mainly includes a fixed die 21, a movable die 22, a linear guide rail 23 and an adjusting screw rod 24. The fixed die 21 is a T-shaped structure, and its lower end is in the shape of a convex arc, and has a T-shaped opening crimping pipe 1 installation notch, and the linear guide rail 23 is detachably connected to the opening side of the fixed die 21. Linear guide rail 23 has two, and their lower end and fixed mold 21 are hinged by bearing pin 25, the upper end has hook 231 and the upper end of fixed mold 21 is a...
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The invention discloses a method for parallel-connection network access of a cable branch box or a ring main unit and a corresponding shunt device. The shunt device comprises a T-shaped shunt press-connecting tube, a press-rounding tool and a press-connecting tool, the T-shaped shunt press-connecting tube is a metal integral member composed of a head C-shaped tube and a rod hollow tube, the press-rounding tool comprises a fixed die, a movable die, a linear guide rail and an adjusting screw, the fixed die is of a T-shaped structure, the linear guide rail is detachably connected on an opening side of the fixed die, the movable die is positioned above the fixed die, the outer side of the movable die slides along the linear guide rail while the lower side of the same is in the shape of a concave arc, the lower end of the adjusting screw penetrates the upper end of the fixed die to be connected with the movable die, the press-connecting tool comprises a hydraulic clamp and a press-connecting die, the press-connecting die comprises two thick-wall semicircular tubes, and regular polygon hole sections at two ends of axial center of each semicircular tube serve as press-connecting sections. The method for press-connecting the T-shaped shunt press-connecting tube and a cable core of a main power supply cable into a whole includes two steps of press-rounding the C-shaped tube by the press-rounding tool and using the press-connecting tool for press-connecting.
Description
technical field [0001] The invention relates to a power supply line, in particular to a method for connecting a cable branch box / ring network cabinet to a power grid in parallel and an implementing device thereof. Background technique [0002] At present, the cable branch box and the ring network cabinet are the main electrical equipment for the distribution of power supply lines in cities in my country. In actual work, both the cable branch box and the ring network cabinet are connected to the power supply line in series, resulting in the need for the entire power grid when they are repaired or replaced. Power failure affects daily life and work, causing economic losses; at the same time, there are two incoming and returning cables in the cable branch box and the ring network cabinet. The power supply can only be restored after the two cables are connected, which increases the workload and In addition, when a user's cable is withdrawn during live work, if the cable entering a...
Claims
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Login to View More IPC IPC(8): H01R11/07H01R4/20H01R43/048
CPCH01R4/20H01R11/07H01R43/048
Inventor 邓晓廉刘军志
Owner STATE GRID CORP OF CHINA