CN201266823Y - Underground installation type cable multi-branch joint box - Google Patents

Abstract

The utility model relates to an underground installation type cable multi-branch joint box, which is composed of a 630A bus bar and at least one 200A bus bar, wherein each phase of each 200A bus bar is connected with the corresponding phase of the 630A bus bar, and its characteristics Yes: the three-phase cable connector of 630A busbar and the bushing socket of each 200A busbar are on the same cable connector box, and the cable connectors of 630A and the bushing sockets of 200A are respectively distributed on different surfaces of the connector box. Compared with the prior art, the utility model has the following advantages: fully insulated, fully shielded, fully sealed, touchable, completely waterproof, corrosion-resistant, small in size, and can still operate normally even in cable wells with harsh environmental conditions.

Description

Underground Mounted Cable Multi-Branch Splice Box

technical field

The utility model belongs to an accessory for electric cable installation, in particular to an underground installation type cable multi-branch joint box.

Background technique

At present, the known cable branch box (as shown in FIG. 1 ) used is composed of a box body 1 installed on the ground, an incoming cable 2 and a plurality of outgoing cables 3 . This kind of box is generally installed on the sidewalk or in the residential area, so it brings inconvenience to pedestrians, and there are certain safety hazards. Policies are out of place. In addition, the number of outgoing lines of this kind of cable branch box is also restricted by its own mechanical strength, safety and reliability.

Contents of the invention

The purpose of this utility model is to provide a fully insulated, fully shielded, fully sealed, product touchable, completely waterproof, corrosion-resistant, and can still operate normally even in cable wells with harsh environmental conditions. , to overcome the above-mentioned deficiencies.

In order to achieve the above purpose, the utility model is composed of a 630A bus bar and at least one 200A bus bar, wherein each phase of each 200A bus bar is connected to the corresponding phase of the 630A bus bar, and its characteristics are: the three phases of the 630A bus bar The phase cable joints and the bushing sockets of each 200A busbar are on the same cable joint box, and the cable joints of the 630A busbar and the bushing sockets of the 200A busbars are respectively distributed on different surfaces of the joint box body.

An outer shielding layer is arranged on the outer surface of the joint box, and an epoxy resin insulating layer is arranged between the outer shielding layer and the bus bar.

An inner shielding net is also arranged in the epoxy resin insulating layer.

A 200A cable joint fixing ring is arranged beside the bushing seat of the 200A busbar on the joint box body.

There are test points on the box body surface of the cable connector of the 630A busbar and the box body surface of the bushing seat of the 200A busbar.

Compared with the prior art, the utility model has the following advantages: full insulation, full shielding and full sealing. The product is touchable, completely waterproof and corrosion-resistant, and can still function normally even under the harsh environmental conditions of the cable shaft. The product has high safety and reliability; the utility model not only has good mechanical properties that are hard and not deformed, but also has higher electrical properties, and because of the unique internal and external double-shielded grounding, the grounding protection is more reliable, and because the built-in The ground shield will not be damaged and has a longer life. In addition, the connection with the elastic cable connector forms an optimal connection combination, which makes the connection very reliable and will not cause adhesion after long-term operation; the utility model is small in size, compact in structure, and has various combinations. It meets the requirements of installation in limited space and various branching methods; the general installation method does not require special training for cable joint workers who have mastered the installation of detachable connection boxes; it has detachability, and the utility model has a 200A bushing seat. Install the cable head that can be plugged and plugged under load, which can be operated through a special insulating rod, and has the advantage of plugging and plugging under load.

Description of drawings

Fig. 1 is a structural schematic diagram of an existing cable branch box.

Fig. 2 is a structural schematic diagram of the utility model.

FIG. 3 is a top view of FIG. 2 .

FIG. 4 is a side view of FIG. 2 .

Fig. 5 is a schematic diagram of the installation of the four-branch joint box according to the embodiment of the present invention.

In the figure: 1-630A bus bar, 2-200A bus bar, 3-outer shielding layer, 4-epoxy resin insulation layer, 5-inner shielding network, 6-200A bus bar bushing seat, 7-test point, 8-200A Cable Gland Fixing Ring, 9-630A Busbar Cable Gland, 10-Joint Box.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

The utility model is composed of a 630A bus bar 1 and at least one 200A bus bar 2, wherein each phase of each 200A bus bar 2 is connected to the corresponding phase of the 630A bus bar 1, and the cable connector 9 of the 630A bus bar 1 and each The bushing sockets 6 of the 200A busbars 2 are on the same cable connector box, and the cable connectors of the 630A busbar and the bushing sockets 6 of the 200A busbar are respectively distributed on different surfaces of the connector box body 10 .

The three-phase cable joint of the utility model is on the same cable joint box, and the volume is very small. At the same time, the branches in each phase are connected by a 630A bus bar and a 200A bus bar, and the 630A cable joint and the 200A bushing seat are distributed On each surface of the joint box, there is a three-dimensional structure, so that the distribution of the incoming and outgoing lines of the branch is obvious, and the installation and identification are convenient. Its insulation is made of epoxy resin material, which has a good electrical insulation effect. The built-in inner shielding net can even the internal electric field, and the outer shielding layer on the surface can play a double grounding shielding function to ensure the safety of use. The test point can be connected with electrical testing equipment to check whether the work is normal at any time. The 200A connector fixing ring can also be equipped with a fixing device to fix the 200A connector when it is unplugged without load, so that it is not easy to loosen. Safe and reliable. On both sides of the cable joint box, there are also installation and fixing bolts, which are convenient for installation and fixing.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (5)

1. An underground installation type cable multi-branch joint box, which is composed of a 630A bus bar and at least one 200A bus bar, wherein each phase of each 200A bus bar is connected to a corresponding phase of the 630A bus bar, and is characterized in that: The three-phase cable joints of the 630A busbar and the bushing sockets of each 200A busbar are on the same cable joint box body, and the 630A cable joints and the bushing sockets of 200A are respectively distributed on different surfaces of the joint box body. 2. The underground installation type cable multi-branch joint box according to claim 1, characterized in that: an outer shielding layer is arranged on the outer surface of the joint box, and an epoxy resin insulating layer is arranged between the outer shielding layer and the busbar. 3. The underground installation type cable multi-branch joint box according to claim 2, characterized in that: an inner shielding net is also arranged in the epoxy resin insulating layer. 4. The underground installation type cable multi-branch joint box according to claim 1, characterized in that a 200A cable joint fixing ring is arranged on the joint box body next to the bushing seat of the 200A bus bar. 5. The underground installation type cable multi-branch joint box according to claim 1, characterized in that: test points are set on the box body surface of the cable joint of the 630A busbar and the box body surface of the bushing seat of the 200A busbar.

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