CN201032673Y

CN201032673Y - Waterproof anti-explosion power distribution unit

Info

Publication number: CN201032673Y
Application number: CNU2007201186484U
Authority: CN
Inventors: 蓝奇勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-12
Filing date: 2007-02-12
Publication date: 2008-03-05
Anticipated expiration: 2017-02-12

Abstract

The utility model relates to a waterproof explosion-proof power distribution equipment. The utility model comprises a back cover body (10), a front seal cover (40) and an electric appliance control part (20). An air gap (30) is formed between the back cover body (10) and the front seal cover (40). A first concave groove (50) and a second concave groove (60) are respectively arranged on the opposite surfaces of the back cover body (10) and the front seal cover (40). Water-collecting concave grooves (51 and 61) which are incurved towards a cavity (11) are provided on the side wall. The side wall is on the side that the first concave groove (50) and the second concave groove (60) are close to the cavity (11). The included angle between the side wall surfaces (52 and 62) which are away from the cavity (11) and the adjacent surface is an obtuse angle. The sectional plane of the first concave groove (50) and the second concave groove (60) is half-heart shaped, triangle or polygon. The utility model gets rid of the method that the explosion-proof power distribution equipment needs to arrange additional rain cover or sealing rubber. The utility model solves the problems that additional material is consumed, mounting and maintenance is complicated, and materials are easily aged and leaked. The utility model has the advantages of simple structure, saved cost and easy production and operation.

Description

The unexplosive power distribution unit of waterproof

Technical field the utility model relates to power distribution equipment, particularly the unexplosive power distribution unit that uses under the explosion-proof environment.

Background technology is present, unexplosive power distribution unit in the inflammable and explosive place, usually because explosion suppresion surface can not seal (because needing the pressure release flame proof), thereby make the explosion-proof distribution product can not waterproof, Chang Yong method be to adopt to add rainproof/water cover at unexplosive power distribution unit or fluting adds rubber strip on explosion suppresion surface method realizes water-proof function in the past.The shortcoming of this mode is that the method that adds rain cover need be wasted additional materials, and the installation and maintenance operation is many, and omits easily, especially for the rainwater infringement of side, does not almost have protective capacities; The method that circular groove adds rubber strip is opened in employing on explosion suppresion surface need waste additional materials equally, and rubber is prone to the situation of ageing failure, weakens its good waterproof effect.

Utility model content the utility model provides a kind of unexplosive power distribution unit with simple and easy waterproof construction, the mode of simple and easy capillary groove is opened in employing on explosion-proof, solve the technical problem of the bad and easy ageing failure of rubber seal of the rainproof/water cover waterproof effect that exists in the prior art.

The utility model realizes that the scheme of foregoing invention purpose is: design a kind of unexplosive power distribution unit with simple and easy waterproof construction, the rear cover body that comprises the opening box-shaped, preceding capping covers this opening, electrical equipment control is deployed in the cavity that forms between preceding capping and rear cover body, has air gap between described rear cover body surrounding cavity peripheral side wall and the preceding capping; The sidewall end face that described rear cover body sidewall is relative with preceding capping is provided with first groove, and this first groove is begun by cavity top sidewall, extends to both sides, and it is lower than the minimum point of cavity by the place; Also be provided with and corresponding second groove of first groove on the capping inner face relative before described with rear cover body sidewall end face; Described first groove and second groove are provided with to the recessed catchment recess of cavity direction near the sidewall of cavity one side; Described first groove is the obtuse angle away from the first side wall surface adjacent with the sidewall end face of cavity one side or the angle of its surperficial tangent line and sidewall end face; Described second groove is the obtuse angle away from second sidewall surfaces adjacent with inner face of cavity one side or the angle of its surperficial tangent line and inner face.Operation principle of the present utility model is, after rainwater enters in the air gap between rear cover body and the preceding capping, because this air gap is smaller, so, rainwater can not directly pour into, but slowly flow downward along rear cover body peripheral side wall end face and preceding capping end face, when water droplet flows first groove and the second groove upper edge, because first groove is adjacent face with the sidewall of second groove at this position and becomes the obtuse angle, so, water droplet is here with separated into two parts, and flow in first groove and second groove along the sidewall of first groove and second groove respectively, owing to be provided with catchment recess near on the sidewall of cavity one side at first groove and second groove, the water droplet of inflow is trapped in this catchment recess, because this catchment recess is in the existence that a shelves waterside is also arranged near air gap one side, so the rainwater that is trapped in the catchment recess just can not prolong to air gap one lateral bine.When the rainwater accumulation is many; rainwater in the catchment recess can be along this groove to two side flow; and finally be discharged from; because; catchment recess is by the minimum point of locating to be lower than cavity, so the rainwater of discharge also can not be invaded in the cavity of rear cover body; thereby can protect the electric component that is arranged in this cavity, play the function of waterproof.

The unexplosive power distribution unit that the utility model provides with simple and easy capillary groove, break away from the way that current unexplosive power distribution unit need dispose extra rain cover or caulking gum, solved the additional materials loss that therefore brings, installation and maintenance complexity, material problem easily aging and that easily omit.Simultaneously, the unexplosive power distribution unit with simple and easy capillary groove of the present utility model can form with flame proof housing one-step casting, does not change the processing of traditional explosion suppresion surface and uses technology, has simple in structure, saving cost, production and characteristics easy to use.

Description of drawings

Fig. 1 is that the utility model unexplosive power distribution unit master looks partial schematic sectional view.

Fig. 2 a is the partial schematic sectional view that the utility model adopts half heart-shaped groove.

Fig. 2 b is the partial schematic sectional view that the utility model adopts triangular groove.

Fig. 2 c is the partial schematic sectional view that the utility model adopts the polygon groove.

Fig. 3 is that schematic diagram is looked on rear cover body described in the utility model 10 right sides.

Embodiment describes specific embodiment of the utility model in detail in conjunction with above-mentioned accompanying drawing.

By finding out among Fig. 1 and Fig. 2, this unexplosive power distribution unit with simple and easy waterproof construction, the rear cover body 10 that comprises the opening box-shaped, preceding capping 40 covers these openings, in the cavity 11 that forms between capping 40 and the rear cover body 10 before electrical equipment control portion 20 places, there is air gap 30 between described rear cover body 10 surrounding cavity, 11 peripheral side wall and the preceding capping 40; Described rear cover body 10 sidewalls and preceding capping 40 relative sidewall end faces 12 are provided with first groove 50, and this first groove 50 is begun by cavity 11 top sidewalls, extends to both sides, and it is lower than the minimum point of cavity 11 by the place; Also be provided with and first groove, 50 corresponding second grooves 60 on the inner face 41 that capping 40 and rear cover body 10 sidewall end faces 12 are relative before described; Described first groove 50 and second groove 60 are provided with to the recessed catchment recess 51,61 of cavity 11 directions near the sidewall of cavity 11 1 sides; Described first groove 50 is the obtuse angle away from the first side wall surface 52 adjacent with sidewall end face 12 of cavity 11 1 sides or the angle of its surperficial tangent line and sidewall end face 12; Described second groove 50 is the obtuse angle away from second sidewall surfaces 62 adjacent with inner face 41 of cavity 11 1 sides or the angle of its surperficial tangent line and inner face 41.

Operation principle of the present utility model is, after rainwater enters in the air gap 30 between rear cover body 10 and the preceding capping 40, because this air gap 30 is smaller, so, rainwater can not directly pour into, but along rear cover body 10 peripheral side wall end faces 12 and preceding capping end face 41 slowly to dirty, when water droplet flows first groove 50 and second groove, 60 upper edges, because first groove 50 and second groove 60 are at the sidewall 52 at this position, 62 are adjacent face 12,41 one-tenth obtuse angles, so, water droplet is here with separated into two parts, and respectively along sidewall 52,62 flow in first groove 50 and second groove 60, owing to be provided with catchment recess 51 near on the sidewall of cavity 11 1 sides at first groove 50 and second groove 60,61, will make the water droplet of inflow be trapped in this catchment recess 51 like this, in 61, because this catchment recess 51,61 in the existence that a shelves waterside is also arranged near air gap 30 1 sides, so, be trapped in catchment recess 51, rainwater in 61 just can not prolong to air gap 30 1 lateral bines.When the rainwater accumulation is many; rainwater in the catchment recess 51,61 can be along this groove to two side flow; and finally be discharged from; because; catchment recess is by the minimum point of locating to be lower than cavity 11, so the rainwater of discharge also can not be invaded in the cavity 11 of rear cover body 10; thereby can protect the electric component that is arranged at electrical equipment control portion 20 in this cavity, play the function of waterproof.

By among Fig. 2 a to Fig. 2 c as can be seen, the cross sectional shape of catchment recess described in the utility model 51,61 can adopt following several scheme, the cross section of first groove 50 be half heart (see Fig. 2 a), triangle (seeing Fig. 2 b) or polygon (seeing Fig. 2 c); The cross section of second groove 60 also can adopt half heart (see Fig. 2 a), triangle (seeing Fig. 2 b) or polygon (seeing Fig. 2 c).

By among Fig. 3 as can be known, described first groove, 50, the second grooves 60 extend back butt joint downwards by both sides, form the cannelure of surrounding cavity 11 sealings.

Claims

1. the unexplosive power distribution unit of a waterproof, the rear cover body (10) that comprises the opening box-shaped, preceding capping (40) covers this opening, electrical equipment control portion (20) places in the cavity (11) that forms between preceding capping (40) and the rear cover body (10), has air gap (30) between described rear cover body (10) surrounding cavity (11) peripheral side wall and the preceding capping (40); It is characterized in that: the sidewall end face (12) that described rear cover body (10) sidewall is relative with preceding capping (40) is provided with first groove (50), this first groove (50) is begun by cavity (11) top sidewall, extend to both sides, it is lower than the minimum point of cavity (11) by the place; Also be provided with and corresponding second groove of first groove (50) (60) on capping (40) inner face (41) relative before described with rear cover body (10) sidewall end face (12); Described first groove (50) and second groove (60) are provided with to the recessed catchment recess (51,61) of cavity (11) direction near the sidewall of cavity (11) one sides; Described first groove (50) is the obtuse angle away from the first side wall surface (52) adjacent with sidewall end face (12) of cavity (11) one sides or the angle of its surperficial tangent line and sidewall end face (12); Described second groove (50) is the obtuse angle away from second sidewall surfaces (62) adjacent with inner face (41) of cavity (11) one sides or the angle of its surperficial tangent line and inner face (41).

2. according to the unexplosive power distribution unit of the described waterproof of claim 1, it is characterized in that: the cross section of described first groove (50) is half heart.

3. according to the unexplosive power distribution unit of the described waterproof of claim 1, it is characterized in that: the cross section of described second groove (60) is half heart.

4. according to the unexplosive power distribution unit of claim 1 or 3 described waterproof, it is characterized in that: the cross section of described first groove (50) is triangular in shape.

5. according to the unexplosive power distribution unit of claim 1 or 2 described waterproof, it is characterized in that: the cross section of described second groove (60) is triangular in shape.

6. according to the unexplosive power distribution unit of claim 1 or 3 described waterproof, it is characterized in that: the cross section of described first groove (50) is polygon.

7. according to the unexplosive power distribution unit of claim 1 or 2 described waterproof, it is characterized in that: the cross section of described second groove (60) is polygon.

8. according to the unexplosive power distribution unit of the described waterproof of claim 1, it is characterized in that: described first groove (50) extends the back butt joint downwards by both sides, forms the cannelure of surrounding cavity (11) sealing.

9. according to the unexplosive power distribution unit of the described waterproof of claim 1, it is characterized in that: described second groove (60) extends the back butt joint downwards by both sides, forms the cannelure of surrounding cavity (11) sealing.