CN201075620Y

CN201075620Y - Dustproof and waterproof terminal box

Info

Publication number: CN201075620Y
Application number: CNU2007200078711U
Authority: CN
Inventors: 王铮
Original assignee: Quanzhou Yixing Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Fujian Electric Power Co Ltd; Quanzhou Power Supply Co of State Grid Fujian Electric Power Co Ltd; Quanzhou Yixing Electric Power Co Ltd
Priority date: 2007-08-06
Filing date: 2007-08-06
Publication date: 2008-06-18
Anticipated expiration: 2017-08-06

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

The dustproof and waterproof terminal box

Technical field

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

Background technology

Known, the electricity substation Outdoor Terminal Case is as the corollary equipment of power plant and electric substation's high pressure primary equipment, mainly as the switching of equipment secondary circuits such as transformer, primary cut-out, current transformer and the operation control unit of equipment in the transformer station.The body structure of existing terminal box is comparatively simple, is generally the metal shell of single open-door, double door or three open-door, at door installed inside water-proof sealing strip, leaves the heat dissipation ventilation hole on casing.The terminal box casing of this structure, degree of protection is not high, and effectively waterproof is with dustproof, and rainwater infiltrates in the case easily, thereby causes electric equipment damage in the case, and the laying dust in the casing can influence the normal operation of equipment.

As a kind of improvement, the Chinese utility model patent of Granted publication number 2917045 (June 27 2007 Granted publication day) discloses a kind of terminal box, this terminal box comprises top cover, sidewall and chamber door, chamber door is connected on the sidewall through hinge, top cover welds mutually with sidewall, and at the binding site of sidewall and chamber door, sidewall outwards is bent into U-shaped, chamber door inwardly is bent into L shaped, and the inside dogleg section of chamber door is covered the opening part that outwards is bent into U-shaped at sidewall.Even there is bigger wind and rain to make rainwater along the sidewall trickling, because sidewall and chamber door junction are bent into U-shaped, water can enter from the opening part of U-shaped the groove of U-shaped and flow away from the groove two ends, and can not enter terminal box inside, strengthened the water resistance of device, used more reliable.

But existing terminal box does not have to solve the waterproof and dustproof problem simultaneously, must be improved further.

Summary of the invention

The purpose of this utility model is for overcoming the deficiency that prior art exists, and by the improvement of structure, provides a kind of and can prevent dust effectively, the terminal box of waterproof.

For achieving the above object, the dustproof and waterproof terminal box that the utility model provides, 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.

Best, 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, and described heat dissipation ventilation hole is opened in annular groove outer ledge place.

Best, described screen pack is removably installed.

Best, described top cover base plate is provided with insulation material layer.

Best, described insulation material layer is around described connected entrance setting.

Best, be provided with guiding gutter around described casing peristome, and this guiding gutter is covered in wherein after described chamber door is closed.

Best, 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.

Best, 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.

The dustproof and waterproof terminal box that the utility model provides, its beneficial effect is: one, the top cover of terminal box adopts double-deck hollow structure, offer heat dissipation ventilation hole and connected entrance at its base plate, and screen pack is installed at the connected entrance place, constitute the passage of extraneous air and box house ventilation heat radiation, this structure can prevent effectively that dust from entering box house; Its two, the around tank peristome is provided with guiding gutter, and seal is set thereon, after chamber door is closed, the tight pressing of chamber door plate medial surface and seal, rainwater can be discharged from along guiding gutter, plays to prevent that dust from entering and preventing the effect that rainwater infiltrates.In sum, the terminal box of this structure, the degree of protection height, waterproof and dustproof is effectively avoided infiltrating and laying dust causes electric equipment damage in the case, the normal operation of support equipment because of rainwater.

Below, by embodiment the dustproof and waterproof terminal box that the utility model provides is illustrated in detail.

Description of drawings

Fig. 1 is the front schematic view of the dustproof and waterproof terminal box that provides of the utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the rearview of Fig. 1.

Fig. 4 is the sectional structure of the top cover of the dustproof and waterproof terminal box that provides of the utility model.

Fig. 5 is the polycrystalline substance schematic diagram of top cover.

Fig. 6 is the partial sectional view of the dustproof and waterproof terminal box that provides of the utility model.

Fig. 7 is the partial enlarged drawing of A direction among Fig. 6, and the structure of capillary groove is shown.

Preferred forms

Referring to figs. 1 through shown in Figure 7, the dustproof and waterproof terminal box adopts shaped steel, plate assembling to make, assemble, and comprises casing 1, chamber door 2 and top cover 3.Now that the structure division of each several part is as follows:

Casing 1, the cabinet-type structure that is square can be divided into single open-door, double door or three open-door formula according to instructions for use, correspondingly forms peristome on a sidewall of casing 1 or a plurality of sidewall for this reason.In the present embodiment, the forward and backward sidewall and the left side wall of casing 1 are formed with peristome respectively, can constitute a kind of terminal box of three open-door formula thus.Each peristome of around tank 1 is provided with guiding gutter, and the position of guiding gutter should guarantee that this guiding gutter can be covered in wherein after chamber door 2 is closed.Guiding gutter is the cannelure 10 that section is " L " type, this cannelure 10 is made of first annular slab 11 and second annular slab 12, first annular slab 11 around tanks, 1 peristome and perpendicular to casing 1 lateral wall setting, second annular slab 12 extend and are parallel to casing 1 lateral wall setting from first annular slab, 11 edges to the casing 1 peristome outside.The second annular plate body 12 is provided with " Ω " shape sealing ring 4, after chamber door 2 is closed, constitutes sealing thereby chamber door 2 medial surfaces are closely pressed together on sealing ring 4 one sides.

Chamber door 2, the corresponding setting of peristome with casing 1, it is hubbed on the casing 1 by hinge and can rotates between the state of opening and capping casing peristome, and chamber door 2 is formed in the side that the door-plate body bends inwards by the door-plate body and from door-plate body edge-perpendicular.

Top cover 3 has the hollow structure that is surrounded by top board 31, base plate 32 and side plate 33.Top cover base plate 32 has annular groove 34, and top cover 3 cooperates with the ring edge at casing 1 top by this annular groove 34 and is fastened on casing 1 top.After the installation, annular groove 34 area surrounded are between casing 1 sidewall, and annular groove 34 outer edges, edge cross out outside casing 1 sidewall.The middle place that is positioned at annular groove 34 enclosing region on top cover base plate 32 offers connected entrance 35, and this connected entrance 35 is communicated with top cover and box houses.This connected entrance is by a screen pack 5 cappings, and screen pack 5 is removably mounted on top cover base plate 32 by pressing plate 51 and securing member 52.In annular groove 34 enclosing region, be provided with insulation material layer 6, to play heat-blocking action around connected entrance.Edge outside top cover base plate 32 stretches out casing 1 sidewall offers a plurality of heat dissipation ventilations hole 36.

More than combine embodiment the utility model is illustrated, but this does not constitute restriction of the present utility model, any modification of making under same design, variation and replacement also all belong to the scope of the utility model protection.

Claims

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.