CN219181166U - But live working's low tension cable feeder pillar casing - Google Patents

Abstract

The utility model discloses a low-voltage cable branch box shell capable of carrying out live working, which comprises a bottom plate, a top cover, side plates and a back plate, wherein waterproof and dustproof double-layer shutters are arranged on the side plates, and the bottom plate, the top cover and the side plates are fixedly connected and then connected with a detachable movable door after being fixed with the back plate. The double-layer shutter is arranged, so that the waterproof and dustproof effects are good, and the installation and use protection requirements of outdoor electrical equipment are met; through setting up the removable dodge gate, when the work space in dead ahead is insufficient, can tear down the dodge gate, reserve the space for the operation.

Description

A low-voltage cable branch box housing capable of live work

technical field

The utility model belongs to the technical field of cable branching and switching, in particular to a low-voltage cable branch box shell capable of live work.

Background technique

Cable branch boxes are widely used in the transformation and construction of power facilities to ensure the safe and stable operation of power equipment in public power grids, especially to improve the safety and reliability of the branching and switching of cable lines during the expansion and reconstruction of power grids. Reduce the scope of operation and maintenance outages.

The current low-voltage cable branch boxes that can be used for live work on the market, as shown in the existing utility model patent (patent number: ZL202220369722.4), the cable branch box shell is made of stainless steel, and the stainless steel cable branch box has its inherent advantages. For example: good corrosion resistance, light and durable.

However, there are the following obvious defects in the process of product use:

1. The metal shell is conductive. During live maintenance work, the busbar module and cables are charged. If the working cable accidentally touches the box, it may cause an accidental trip of the upper-level switch, resulting in an accidental electrical accident. At the same time, the exposed parts of the metal casing that are not charged during normal operation of the electrical equipment and that are charged during faults must be grounded, but in the actual installation process, it is inconvenient to lead the casing grounding wire especially in the cable shaft of high-rise buildings.

2. The ordinary louvers of the existing stainless steel cable branch box have poor waterproof and dustproof effect, and it is difficult to meet the installation and use protection requirements of outdoor electrical equipment products.

3. Most of the existing stainless steel cable branch boxes are hinged structures with one-sided door opening. When the box door is opened, the space facing people directly in front takes up a lot, while the space of cable shafts in high-rise buildings is generally relatively small. Working space is limited. At the same time, it was found that the design of the single door of the existing box body was unreasonable, and the studs of the entry line near the hinge could not be tightened with special tools for live work. The main reason was that the rotation of the special tools was blocked after the box door was opened.

Utility model content

The main purpose of the utility model is to provide a low-voltage cable branch box housing with good heat dissipation and insulation, which does not need to be connected to an additional grounding wire and can be used for live work.

The low-voltage cable branch box shell capable of live operation provided by the utility model includes a bottom plate, a top cover, a side plate and a back plate, and waterproof and dustproof double-layer louvers are arranged on the side plate, and the bottom plate, the top cover After being firmly connected with the side panels and fixed with the back panel, it is connected with a detachable movable door.

In one embodiment of the above housing, two beams are respectively fixed on the bottom plate and the top cover, and the two side plates are fixedly connected to the beams from the left and right sides respectively, and the back plate is connected to the bottom plate, the top cover and the two side plates. Connect and securely connect through the protruding clamps and fasteners.

In one embodiment of the above housing, the back plate is provided with installation holes.

In one embodiment of the above housing, multiple double-layer louvers are arranged on the side plate, the double-layer louvers include outer louvers and inner louvers, and the inner louvers are fixed on the outer louvers by fasteners.

In one embodiment of the above casing, the outer louvers are multiple rows of special-shaped grooves opened on the side plate, and the special-shaped grooves form heat dissipation channels.

In one embodiment of the above housing, the inner louvers are provided with multiple rows of heat dissipation channels, and the heat dissipation channels are of a bent structure that is first horizontal and then downward and then horizontal; the bottom of the inner louvers is provided with a drainage ramp, and With protective gauze.

In one embodiment of the above casing, two rows of vertical clamping plates are arranged on the inner side of the movable door, and a handle is installed on the front.

In one embodiment of the above housing, each component is made of non-metallic composite material.

The utility model has the advantages of:

1. Double-layer shutters are installed, which have good waterproof and dustproof effects, and meet the protection requirements for the installation and use of outdoor electrical equipment.

2. Set up a detachable movable door. When the working space in front is not enough, the movable door can be removed to leave space for the operation.

3. The shell is made of non-metallic composite material, insulated wire, good waterproof, long service life, and the shell does not need additional grounding.

Description of drawings

Fig. 1 is a schematic diagram of an exploded structure of an embodiment of the present invention.

Fig. 2 is a schematic diagram of a side cross-sectional structure of the double-layer shutter in Fig. 1 .

Fig. 3 is a schematic structural diagram of the outer louvers in Fig. 2 .

Fig. 4 is a schematic structural diagram of the inner louvers in Fig. 2 .

Fig. 5 is a schematic view of the front structure of the detachable movable door in Fig. 1 .

Fig. 6 is a schematic diagram of the rear structure of the detachable movable door in Fig. 1 .

Fig. 7 is a schematic diagram of the use status of this embodiment. (Open the detachable movable door)

Fig. 8 is a schematic diagram of the closed state of this embodiment. (Installing a detachable movable door)

Detailed ways

As shown in Figure 1, the low-voltage cable branch box shell capable of live work disclosed in this embodiment includes a bottom plate 1, a top cover 2, a side plate 3, a back plate 4, double-layer shutters 5 and a detachable movable door 6 .

Two beams are respectively fixed on the bottom plate 1 and the top cover 2, and the two side plates 3 are fixedly connected with the beams from the left and right sides respectively, and the back plate 4 is connected with the bottom plate, the top cover and the two side plates and passed through the protruding clamping plate It is tightly connected with bolts, and there are mounting holes for installing the base of the wired operation module on the back plate.

The upper and lower ends of the side panels 3 are each provided with a double-layer shutter 5, a total of 4.

It can be seen from FIG. 2 , FIG. 3 and FIG. 4 that the double-layer shutter 5 includes outer shutters 51 and inner shutters 52 .

The outer louvers 51 are multiple rows of special-shaped grooves opened on the side plate, and the special-shaped grooves form heat dissipation channels.

There are multiple rows of cooling channels on the inner louvers 52, and the cooling channels are bent structures that are first horizontal, then downward, and then horizontal, and this structure can also function as an outward water block. The bottom of the inner louvers is provided with a drainage sloping plate. At the same time, the inside of the inner louver is pasted with a protective gauze, which can block the entry of most particles and dust.

When the external water enters from the outer louvers, the special structure of the heat dissipation channel can block the water to prevent it from entering the tank and dripping downwards; finally, it flows out through the openings of the outer louvers under the guidance of the drainage sloping plate at the bottom.

As shown in Fig. 5 and Fig. 6, the inner side of the detachable dodge door 6 is provided with two rows of vertical clamping plates, and the detachable dodging gate can be limited by clamping the left and right side plates. The front side of the detachable movable door is provided with two convenient handles.

When performing cable wiring operations, the movable door can be directly removed, which solves the problem of insufficient space.

Each structure of the shell is made of non-metallic composite material, the composite material is mainly composed of GF (special yarn), UP (unsaturated resin), low shrinkage additive, MD (filler), etc., with good sealing and waterproof, It has the advantages of high insulation, good corrosion resistance and long service life.

The shell made of non-metallic composite material has high insulation, so the shell does not need to be grounded.

The base plate 1 is provided with a ground row, and the bottom row adopts the grounding cable crimp-free copper wire lug technology, which facilitates the connection of the cable grounding core. A cable fixing beam is fixed between the bottom positions of the side plates 3 . The rear sides of the outer ends of the two side plates are respectively fixed with hanging lugs up and down, which is convenient to fix the shell of the branch box through the hanging lugs.

As shown in Figure 7 and Figure 8, when installing the housing, first install the double-layer shutters on the side panels, then connect and fix the side panels with the bottom panel and the beam of the top cover; After installation, it is connected and fixed with the side panels, bottom panels and top cover, and finally the detachable movable door is sealed on the front to complete the installation.

The advantages of using this housing are:

1. Double-layer shutters are installed, which have good waterproof and dustproof effects, and meet the protection requirements for the installation and use of outdoor electrical equipment.

2. Set up a detachable movable door. When the working space in front is not enough, the movable door can be removed to leave space for the operation.

3. The shell is made of non-metallic composite material, insulated wire, good waterproof, long service life, and the shell does not need additional grounding.

Claims (8)

1. A low-voltage cable branch box housing capable of live work, comprising a base plate, a top cover, a side plate and a back plate, characterized in that: the side plate is provided with waterproof and dustproof double-layer shutters, and the bottom plate, top cover After the cover and the side panels are fastened and fixed to the back panel, they are connected with a detachable movable door. 2. The low-voltage cable branch box housing capable of live work as claimed in claim 1, wherein two beams are respectively fixed on the bottom plate and the top cover, and the two side plates are respectively fixed to the beams from the left and right sides Connection, the back plate is connected with the bottom plate, the top cover and the two side plates and is fixedly connected through the protruding clamping plate and fasteners. 3. The housing of a low-voltage cable branch box capable of live work according to claim 2, wherein an installation hole is opened on the back plate. 4. The low-voltage cable branch box housing capable of live work according to claim 1, characterized in that: the side plate is provided with multiple double-layer louvers, the double-layer louvers include outer louvers and inner louvers, and the inner louvers pass through Fasteners are secured to the outer louvers. 5. The housing of a low-voltage cable branch box capable of live work as claimed in claim 4, wherein the outer louver is a plurality of rows of special-shaped grooves opened on the side plate, and the special-shaped grooves form heat dissipation channels. 6. The low-voltage cable branch box housing capable of live work as claimed in claim 4, characterized in that: there are multiple rows of heat dissipation channels on the inner louver, and the heat dissipation channels are of a bent type that is first horizontal, then downward, and then horizontal Structure; the bottom of the inner louver is equipped with a drainage sloping plate, and the inner side is pasted with a protective gauze. 7. The low-voltage cable branch box housing capable of live work according to claim 1, characterized in that: two rows of vertical clamping plates are arranged on the inner side of the movable door, and a handle is installed on the front. 8. The housing of a low-voltage cable branch box capable of live work according to claim 1, wherein each member is made of non-metallic composite material.

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