CN201075620Y - Dustproof and waterproof terminal box - Google Patents

Abstract

A dust-proof and water-proof terminal box comprises a box body which is provided with an open part on the side wall and a box door which is pivoted on the box body and can rotate between the open state and the state of capping the open part of the box body. The utility model is characterized in that a hollow header surrounded by a top board, a bottom board and a side board is arranged on the top part of the box body, the edge around the header extends outside the side wall of the box body transversely, a communicating vent which is communicated with the inner part of the box body is arranged on the bottom board of the head cover, and a filtering network is detachably arranged on the communicating vent, a heat dissipation air-vent is arranged on the edge of the head cover bottom board extending outside the side wall of the box body. A diversion groove is circumferentially arranged on the open part of the box body, a sealing piece is arranged on the outer side face of the diversion groove, the diversion groove is sealed in the box when the box door is closed, and the sealing piece is pressed tightly by the inner side face of the box door to form seal. The terminal box with the structure has high protection grade, which can prevent dust and water effectively, avoid the damage of electrical equipment in the box caused by the rain infiltration and the laying dust, and guarantee the normal operation of the equipment.

Description

Dustproof and waterproof terminal box

technical field

The utility model relates to a dustproof and waterproof terminal box.

Background technique

As known, the outdoor terminal box of electric power substation is used as supporting equipment of high-voltage primary equipment in power plants and substations, and is mainly used for the switching of secondary circuits of transformers, high-voltage circuit breakers, current transformers and other equipment in substations and the operation control of equipment unit. The box structure of the existing terminal box is relatively simple, generally a metal shell with single door, double door or three doors, a waterproof sealing strip is installed on the inner side of the door, and heat dissipation ventilation holes are left on the box body. The terminal box with this structure has a low protection level and cannot be effectively waterproof and dustproof. Rainwater is easy to seep into the box, which will cause damage to the electrical equipment in the box, and the dust in the box will affect the normal operation of the equipment.

As an improvement, the Chinese Utility Model Patent of Authorized Announcement No. 2917045 (authorized announcement date June 27, 2007) discloses a terminal box, which includes a top cover, side walls and a box door, and the box door is hinged. On the side wall, the top cover is welded to the side wall, at the junction of the side wall and the box door, the side wall is bent outwards into a U shape, the box door is bent inwards into an L shape, and the box door is bent inwards The shielding is at the opening where the side wall is bent outwards into a U shape. Even if there is a large wind and rain to make the rainwater flow along the side wall, because the side wall and the box door are bent into a U shape, the water will enter the U-shaped groove from the U-shaped opening and then flow away from the two ends of the groove. It will not enter the interior of the terminal box, which enhances the waterproof performance of the device and makes it more reliable to use.

However, the existing terminal box cannot simultaneously solve the waterproof and dustproof problems, and must be further improved.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a terminal box that can effectively prevent dust and water through structure improvement.

In order to achieve the above purpose, the dustproof and waterproof terminal box provided by the utility model includes a box body with an opening on the side wall, and a box body that is pivotally arranged on the box body and can rotate between an open state and a state that covers the opening portion of the box body. The box door is characterized in that: a hollow top cover surrounded by a top plate, a bottom plate and a side plate is arranged on the top of the box body, and the surrounding edges of the top cover extend out of the side wall of the box body along the transverse direction, and the top cover and the bottom plate are provided with boxes. There is a communication port connected to the inside of the body, and a filter screen is installed at the communication port, and a heat dissipation ventilation hole is provided at the edge of the top cover bottom plate extending out of the side wall of the box body.

Preferably, the bottom plate of the top cover has an annular groove that can cooperate with the top edge of the box, the vent is set in the middle of the area surrounded by the annular groove, and the heat dissipation vent is set in the annular groove at the outer edge.

Preferably, the filter is installed detachably.

Preferably, a layer of heat insulating material is arranged on the bottom plate of the top cover.

Preferably, the heat insulating material layer is arranged around the communication port.

Preferably, a flow guide groove is arranged around the opening of the box body, and the flow guide groove is covered when the box door is closed.

Preferably, the guide groove is composed of a first annular plate that surrounds the opening of the box and is perpendicular to the outer wall of the box, and extends from the edge of the first annular plate to the outside of the opening of the box and is parallel to It is formed on the second annular plate on the outer wall of the box body.

Preferably, a seal is provided on the second annular plate body, and when the door is closed, the inner surface of the door is pressed against the seal to form a seal.

The dustproof and waterproof terminal box provided by the utility model has the beneficial effects as follows: firstly, the top cover of the terminal box adopts a double-layer hollow structure, and a heat dissipation ventilation hole and a communication port are provided on the bottom plate, and a filter screen is installed at the communication port, This structure can effectively prevent dust from entering the inside of the box; secondly, a diversion groove is arranged around the opening of the box, and a seal is arranged on it, when the box After the door is closed, the inner surface of the door panel is tightly pressed with the seal, and the rainwater can be discharged along the diversion groove to prevent dust from entering and rainwater from infiltrating. To sum up, the terminal box with this structure has a high degree of protection, can effectively prevent water and dust, avoid damage to the electrical equipment in the box due to rainwater infiltration and dust accumulation, and ensure the normal operation of the equipment.

Hereinafter, the dustproof and waterproof terminal box provided by the utility model will be described in detail through the embodiments.

Description of drawings

Fig. 1 is a schematic front view of the dustproof and waterproof terminal box provided by the utility model.

Fig. 2 is a left side view of Fig. 1 .

FIG. 3 is a rear view of FIG. 1 .

Fig. 4 is a cross-sectional structure of the top cover of the dustproof and waterproof terminal box provided by the utility model.

Fig. 5 is a schematic diagram of the bottom structure of the top cover.

Fig. 6 is a partial sectional view of the dustproof and waterproof terminal box provided by the present invention.

Fig. 7 is a partial enlarged view of direction A in Fig. 6, showing the structure of the waterproof groove.

best practice

Referring to Fig. 1 to Fig. 7, the dust-proof and waterproof terminal box is manufactured and assembled by steel and plate assembly, including a box body 1, a box door 2 and a top cover 3. The structure of each part is now described as follows:

The box body 1 is a square cabinet type structure, and can be divided into single door, double door or three door type according to the requirements of use. For this reason, openings are formed on one or more side walls of the box body 1 accordingly. In this embodiment, openings are respectively formed on the front, rear and left side walls of the box body 1 , thereby constituting a three-door terminal box. A diversion groove is provided around each opening of the box body 1 , and the position of the diversion groove should ensure that the diversion groove can be covered when the door 2 is closed. The diversion groove is an annular groove 10 with an "L"-shaped cross section. The annular groove 10 is composed of a first annular plate 11 and a second annular plate 12. The first annular plate 11 surrounds the opening of the box body 1 and is perpendicular to the box body 1. The outer wall is arranged, and the second annular plate 12 extends from the edge of the first annular plate 11 to the outside of the opening of the box body 1 and is arranged parallel to the outer wall of the box body 1 . An "Ω"-shaped seal ring 4 is arranged on the second annular plate body 12. When the door 2 is closed, the inner side of the door 2 is tightly pressed against one side of the seal ring 4 to form a seal.

The box door 2 is arranged corresponding to the opening of the box body 1. It is pivotally arranged on the box body 1 through a hinge portion and can rotate between an open state and a state of covering the opening of the box body. , and a side edge bent inwardly from the edge of the door panel body perpendicular to the door panel body.

The top cover 3 has a hollow structure surrounded by a top plate 31 , a bottom plate 32 and a side plate 33 . The bottom plate 32 of the top cover has an annular groove 34 through which the top cover 3 fits with the annular edge of the top of the box body 1 and is fastened on the top of the box body 1 . After installation, the area surrounded by the annular groove 34 is located between the side walls of the box body 1 , and the outer peripheral edges of the annular groove 34 protrude out of the side walls of the box body 1 along the transverse direction. A communication port 35 is opened in the middle of the area surrounded by the annular groove 34 on the bottom plate 32 of the top cover, and the communication port 35 communicates with the top cover and the inside of the box body. The communication port is covered by a filter screen 5 , and the filter screen 5 is detachably installed on the bottom plate 32 of the top cover through a pressing plate 51 and a fastener 52 . In the area surrounded by the annular groove 34, a heat insulating material layer 6 is arranged around the communication port to play a role of heat insulation. A plurality of heat dissipation ventilation holes 36 are provided at the edge of the top cover bottom plate 32 protruding from the side wall of the box body 1 .

The utility model has been described above in conjunction with the embodiments, but this does not constitute a limitation to the utility model. Any modification, change and replacement made under the same concept also belong to the protection scope of the utility model.

Claims (8)

1. dustproof and waterproof terminal box, comprise that sidewall has the casing of peristome and is hubbed on the casing and the chamber door that can rotate between the state of opening and capping casing peristome, it is characterized in that: be provided with the hollow top cover that surrounds by top board, base plate and side plate at the casing top, the edge of top cover is along crossing out outside the wall box, the top cover base plate offers the connected entrance that is communicated with box house and at this connected entrance place screen pack is installed, and the top cover base plate stretches out the outer edge of wall box and offers the heat dissipation ventilation hole.

2. dustproof and waterproof terminal box according to claim 1, it is characterized in that: described top cover base plate has the annular groove that can cooperate with described casing top, place in the middle of described ventilating opening is opened in the annular groove area surrounded, described heat dissipation ventilation hole is opened in annular groove outer ledge place.

3. dustproof and waterproof terminal box according to claim 1 and 2 is characterized in that: described screen pack is removably installed.

4. dustproof and waterproof terminal box according to claim 1 and 2 is characterized in that: described top cover base plate is provided with insulation material layer.

5. dustproof and waterproof terminal box according to claim 4 is characterized in that: described insulation material layer is around described connected entrance setting.

6. dustproof and waterproof terminal box according to claim 1 is characterized in that: be provided with guiding gutter around described casing peristome, and this guiding gutter is covered in wherein after described chamber door is closed.

7. dustproof and waterproof terminal box according to claim 6 is characterized in that: described guiding gutter is by extending and second annular slab that is parallel to described casing lateral wall constitutes around described casing peristome and perpendicular to first annular slab of described casing lateral wall and from the first annular slab edge to the described casing peristome outside.

8. dustproof and waterproof terminal box according to claim 7 is characterized in that: the described second annular plate body is provided with seal, and described chamber door medial surface is pressed together on formation sealing on the seal after described chamber door is closed.

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