CN204190230U - There is the batch meter of concealed ventilating mechanisms - Google Patents

Abstract

The utility model discloses a kind of batch meter with concealed ventilating mechanisms, comprise casing, case lid and base plate, form the side plate of casing and doorframe top and be provided with near case lid place and at least onely ranked first ventilation hole; Base plate is provided with the second ventilation hole; Case lid is made up of top board and the coaming plate being fixed on top board surrounding, and coaming plate upper end is connected with top plate seal, and the height of coaming plate is greater than the distance of lower end to top board of the first ventilation hole bottom; Gap is provided with between coaming plate and casing.The ventilation hole of heat radiation is arranged on casing top and bottom by the utility model, the higher hot-air of temperature in casing is distributed from casing top, the ventilation hole of bottom half both can be used for conventional heat radiation, also can pass into cooling-air and dispel the heat, have good radiating effect; First ventilation hole is arranged on casing top, and is blocked by the coaming plate of case lid, is not easily found, and can prevent from being filled in foreign material by people; There is simply compact, easy to use, low cost and other advantages.

Description

Metering Box with Concealed Ventilation Mechanism

technical field

The utility model relates to the field of power transmission and distribution equipment, in particular to a metering box with a hidden ventilation mechanism.

Background technique

The metering box is a low-voltage power distribution device composed of switchgear, measuring instruments, protective appliances and auxiliary equipment assembled in a closed or semi-closed metal cabinet or on a screen width according to the requirements of electrical wiring. It is often used in various power generation, distribution and substations. middle. The metering box is generally installed outdoors, and it usually integrates a large number of electrical component modules and various discrete electronic components with high heat generation. Once the temperature inside the metering box is too high, it will affect the control accuracy and stability, and even cause the electrical components to burn out, causing Unexpected shutdown, affecting power supply.

Therefore, in order to ensure the normal operation of the electrical components inside the metering box, it is usually necessary to arrange a heat dissipation mechanism on the metering box. The heat dissipation mechanism in the prior art is generally a heat dissipation window, which generally consists of a plurality of baffles. The baffles are generally inclined downwards to ventilate and dissipate heat and to prevent rain. They are generally arranged on the outer wall of the middle part of the metering box. It has the following disadvantages:

The hot air that radiates outward in the metering box is easily blocked by the baffle and cannot be dissipated in time, which affects the heat dissipation effect. The radiation from the heat dissipation window makes the temperature at the top of the metering box higher, and water vapor is easily formed in the box.

In addition, in the prior art, the ventilation holes of the metering box are exposed, and it is easy to be stuffed with sundries.

Utility model content

The technical problem to be solved by the utility model is to provide a metering box with a hidden ventilation mechanism. destroy.

The technical solution adopted by the utility model to solve the above problems is:

A metering box with a hidden ventilation mechanism, including a box body, a box cover arranged at the top of the box body and a bottom plate arranged at the bottom of the box body, the box body is composed of side panels and door frames; the upper part of the side panels and door frames is close to the box The cover is provided with at least one row of first ventilation holes; the bottom plate is provided with second ventilation holes; the cover is composed of a top plate and a coaming plate fixed around the top plate, the coaming plate is arranged perpendicular to the top plate, and the top of the coaming plate It is sealingly connected with the top plate, and the height of the surrounding plate is greater than the distance from the lower end of the lowermost first ventilation hole to the top plate; there is a gap between the surrounding plate and the box body. The heat dissipation window of the metering box in the prior art is set in the middle of the side plate of the box body. The inventor found in long-term use that after the air is heated, it rises in the metering box, causing a large part of the hot air to gather on the top of the metering box, which cannot be removed from the metering box. The heat dissipation window in the middle of the box radiates out, making the top temperature of the metering box higher, and water vapor is easy to form in the box. In view of this, the inventor proposes the above-mentioned scheme, and the ventilation holes for heat dissipation are arranged on the top and bottom of the box body, so that the temperature in the box is relatively low. High hot air can be emitted from the top of the box, and the ventilation holes at the bottom of the box can be used for conventional heat dissipation, and can also pass in cooling air for heat dissipation when necessary, which has a good heat dissipation effect; in addition, the second ventilation hole is set at At the bottom of the box, the first ventilation hole is set on the top of the box, and is blocked by the enclosure of the box cover, which is not easy to be found and can prevent people from stuffing sundries.

As a further improvement of the present utility model, a silk screen is provided at the position corresponding to the first ventilation hole on the side plate and the door frame; a screen is also provided at a position facing the second ventilation hole on the bottom plate, and the screen Located in the box, the wire mesh blocks the first ventilation hole and the second ventilation hole, preventing larger dust, sundries, etc. from entering the box through the first ventilation hole and the second ventilation hole, but does not affect the inside of the box heat dissipation.

Further, the width of the gap between the shroud and the box body is not less than 3 cm, so as to ensure the heat dissipation of the box body.

Further, the box body is in the shape of a cuboid or a cube, the top plate is a rectangular plate, and the surrounding plate is a long rectangular plate.

Further, both the first ventilation hole and the second ventilation hole are elongated holes.

To sum up, the beneficial effects of the utility model are: the utility model changes the conventional design of the prior art that the ventilation holes are arranged in the middle of the box body, and the ventilation holes for heat dissipation are arranged on the top and bottom of the box body, so that the temperature in the box body is relatively low. High hot air is emitted from the top of the box, and the ventilation holes at the bottom of the box can be used for conventional heat dissipation, and can also pass in cooling air for heat dissipation when necessary, which has a good heat dissipation effect; in addition, the second ventilation of the utility model The hole is set at the bottom of the box body, and the first ventilation hole is set at the top of the box body, and is blocked by the coaming plate of the box cover, which is not easy to be found, and can prevent people from stuffing sundries; the utility model has the advantages of simple and compact structure, convenient use and low cost. Low.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of casing;

Fig. 3 is a sectional view of the utility model.

Marks and corresponding component names in the attached drawings:

1-box body; 11-side panels; 12-door frame; 2-box cover; 22-top panel; ; 7 - silk screen.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

【Example 1】

As shown in Figures 1 and 2, the metering box with a hidden ventilation mechanism includes a box body 1, a box cover 2, a bottom plate 3, and a box door 6, wherein:

The box body 1 is in the shape of a cuboid or a cube, and is surrounded by three side panels 11 and a door frame 12. All the side panels 11 and the top of the door frame 12 are provided with a horizontal row of first ventilation holes 4 near the box cover 2. .

Described box cover 2 is made of top plate 22 and the coaming plate 21 that is fixed on top plate 22 all around, and top plate 22 is rectangular plate, and coaming plate 21 is rectangular strip plate: top plate 22 is fixed on casing 1 top, and coaming plate 21 is positioned at top plate 22 The bottom is perpendicular to the top plate 22, and the upper end of the coaming plate 21 is sealed and connected with the top plate 22. The height of the coaming plate 21 is greater than the distance from the lower end of the first ventilation hole 4 to the top plate 22. In this way, in the horizontal direction, the coaming plate 21 blocks All the first ventilation holes 4 are covered, and people cannot see the first ventilation holes 4 when looking at the metering box 1 in the horizontal direction, so that the first ventilation holes 4 have a certain degree of concealment;

As shown in Figure 3, there is a gap between the enclosure 21 and the box body 1, the width d of the gap is not less than 3cm, so that the distance between the enclosure 21 and the side panel 11 or door frame 12 facing it is not less than 3cm , reserve a certain heat dissipation channel, so that the enclosure plate 21 does not affect the heat dissipation of the first ventilation hole 4 when covering the first ventilation hole 4 .

The bottom plate 3 is fixed on the bottom of the box body 1, and the bottom plate 3 is provided with a second ventilation hole 5. The second ventilation hole can be used as a conventional heat dissipation hole, or a cooling air can be temporarily introduced to dissipate heat in the box body 1. .

Tests have proved that in the same environment, the existing common metering box (ventilation holes are set in the middle of the box) will form water vapor in the box after 5 days of use, while the metering box in this embodiment has no water vapor within 10 days of use. Its cooling effect is better.

In this embodiment, the metering box 1 can also be composed of two side plates 11 and two door frames 12, the two side plates 11 are opposite, and the two door frames 12 are opposite, forming a metering box with double doors on the opposite side.

In addition, two or more horizontal rows of first ventilation holes 4 can be provided at the upper part of the side plate 11 and the door frame 12 close to the box cover 2, but all the first ventilation holes 4 should be arranged above the lower end of the enclosure 21, that is, the enclosure 21 The height is greater than the distance from the lower end of the first ventilation holes 4 in the bottom row to the top plate 22, so that the coaming plate 21 blocks all the first ventilation holes 4 in the horizontal direction, ensuring the concealment of the first ventilation holes 4.

[Example 2]

As shown in Figure 3, on the basis of Embodiment 1, this embodiment further improves the ventilation mechanism and adds a dust-proof and sundry-proof mechanism:

One side of the side plate 11 and the door frame 12 located in the box body 1 is provided with a wire mesh 7, the position of the wire mesh 7 corresponds to the position of the first ventilation hole 4 and is fixed on the corresponding side plate 11 and the inner wall of the door frame 12 ;

The side of the bottom plate 3 inside the box body 1 is also provided with a wire mesh 7 at a position facing the second ventilation hole 5 , and the wire mesh 7 is fixed on the bottom plate 3 .

In this embodiment, in the box body 1, a wire mesh 7 is provided at the positions corresponding to the first ventilation hole 4 and the second ventilation hole 5, to prevent dust and other sundries from entering the box body 1 through these two ventilation holes, ensuring Cleanliness and safety in the box body 1, but the silk screen 7 does not affect the heat dissipation of the box body 1.

[Example 3]

On the basis of Embodiment 1 or Embodiment 2, in this embodiment, the first ventilation hole 4 and the second ventilation hole 5 are long holes, the length direction of the first ventilation hole 4 is consistent with the vertical direction, and the bottom one The lower ends of the first ventilation holes 4 of the row are not lower than the lower ends of the shrouds 21 .

The above are only preferred implementations of the utility model, and the scope of protection of the utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the utility model all belong to the scope of protection of the utility model. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims (5)

1. A metering box with a hidden ventilation mechanism, including a box body (1), a box cover (2) set on the top of the box body (1) and a bottom plate (3) set on the bottom of the box body (1), the box The body (1) is composed of a side plate (11) and a door frame (12), and is characterized in that, At least one row of first ventilation holes (4) are provided on the side plate (11) and the upper part of the door frame (12) close to the box cover (2); The bottom plate (3) is provided with a second ventilation hole (5); Described case cover (2) is made of top board (22) and the coaming board (21) that is fixed on top board (22) all around, and coaming board (21) is arranged perpendicular to top board (22), and coaming board (21) upper end and top board (22) Sealed connection, the height of the coaming plate (21) is greater than the distance from the lower end of the lowermost first ventilation hole (4) to the top plate (22); A gap is provided between the enclosure (21) and the box body (1). 2. The metering box with hidden ventilation mechanism according to claim 1, characterized in that, the side plate (11) and the door frame (12) are provided with silk screens at positions corresponding to the first ventilation holes (4) (7); the bottom plate (3) is also provided with a wire mesh (7) at a position facing the second ventilation hole (5), and the wire mesh (7) is located in the box body (1). 3. The metering box with hidden ventilation mechanism according to claim 1 or 2, characterized in that the width of the gap between the enclosure (21) and the box (1) is not less than 3cm. 4. The metering box with hidden ventilation mechanism according to claim 3, characterized in that, the box body (1) is in the shape of a cuboid or a cube, the top plate (22) is a rectangular plate, and the surrounding plate (21) is a rectangular strip. 5. The metering box with a concealed ventilation mechanism according to claim 3, characterized in that, the first ventilation hole (4) and the second ventilation hole (5) are both elongated holes.