Nonmetal metering box

Abstract

The utility model belongs to the technical field of electric power metering boxes, and particularly relates to a non-metal metering box, which comprises a metering box, an exhaust hole and a protection mechanism, the protection mechanism comprises a sealing plate which is provided with at least one vertical plate which is slidably connected to the side wall of the metering box along the vertical direction; the fixing frame comprises a fixing plate, a channel, an adjusting box, a sliding column and a supporting spring; a cavity with the upper end communicated with the outside is formed in the adjusting box, and the interior of the cavity is used for loading liquid substances. Through the arrangement of the protection mechanism, the function of dynamically adjusting the shielding area at the exhaust hole according to the external environment is achieved, the drying burden of the moisture absorption bag is relieved, the usage amount and replacement frequency of a drying agent in the moisture absorption bag can be reduced, and the moisture absorption bag has the advantages of being good in practicability and high in economical efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric power metering box, concretely relates to a nonmetallic metering box. BACKGROUND

[0002] The electric power metering box is an important component of electric energy metering in the electric power system. In electric energy metering, the metering box is an instrument used for metering and managing low-voltage electric quantity. When the metering box is installed outdoors, it is subjected to the sun, wind, rain, and especially lightning for a long time. The nonmetallic metering box is a new type of electrical equipment box body mainly made of high molecular materials. Compared with the traditional metallic metering box, the nonmetallic metering box has better corrosion resistance, heat resistance, weather resistance, and other characteristics, so it is increasingly widely used outdoors.

[0003] The document with the authorized announcement number CN222191488U discloses a nonmetallic low-voltage metering box, which comprises a metering box. A protection mechanism is installed on the side wall of the metering box. A heat dissipation mechanism for ventilation is installed on the side wall of the metering box and comprises a mounting plate, a heat dissipation groove, a cotton cloth bag, a clamping rod, a joint, and a fixing sleeve. The fixing sleeve is rotated on the side wall of the joint and slides along the side wall of the joint, while the clamping rod enters the inside of the fixing sleeve. The fixing sleeve extrudes the clamping rod, while the clamping rod clamps the cotton cloth bag, thereby fixing the cotton cloth bag and avoiding its falling. When air penetrates the heat dissipation groove and moves downward, the air contacts the cotton cloth bag, the inside of which is filled with silica gel desiccant. The desiccant absorbs the moisture in the air, so that the air entering the inside of the metering box remains dry.

[0004] However, the amount of moisture absorbed by the desiccant is limited, and the desiccant needs to be frequently replaced, which is not practical. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model aims to provide a nonmetallic metering box. Through the arrangement of the protection mechanism, the function of dynamically adjusting the shielding area at the exhaust hole according to the external environment is realized, the drying burden of the moisture absorption bag is alleviated, the use amount and replacement frequency of the desiccant in the moisture absorption bag are reduced, and the utility model has the advantages of good practicability and high economy.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A nonmetallic metering box comprises a metering box and an exhaust hole arranged on the side wall of the metering box. A protection mechanism is further arranged on the side wall of the metering box. The protection mechanism comprises:

[0008] The closing plate is provided with at least one vertical plate slidably connected to the side wall of the metering box in the vertical direction, and the vertical plate can cover the exhaust hole completely at least when the vertical plate is lowered to the lowest position.

[0009] The fixing frame comprises a fixing plate installed on the side wall of the metering box and located at the upper end of the exhaust hole, a channel arranged on the fixing plate, an adjusting box located at the upper end of the fixing plate, a sliding column slidably connected in the channel and used for connecting the vertical plate and the adjusting box, and a supporting spring sleeved on the outer end of the sliding column and connected with the upper end of the fixing plate at one end and the lower end of the adjusting box at the other end.

[0010] The adjusting box is provided with a cavity in communication with the outside at the upper end, and the cavity is used for loading liquid.

[0011] As a further preferred embodiment of the utility model, the adjusting box comprises a bottom plate and four side plates connected with each other to form the cavity; the lower end of the side plate away from the side wall of the metering box is provided with a drain hole.

[0012] As a further preferred embodiment of the utility model, the side plate away from the side wall of the metering box is connected by a lower vertical plate and an upper inclined plate; the drain hole is arranged on the lower vertical plate, and the upper inclined plate gradually moves away from the side wall of the metering box from bottom to top.

[0013] As a further preferred embodiment of the utility model, a sliding block for adjusting the size of the drain hole is slidably connected to the side end of the drain hole.

[0014] As a further preferred embodiment of the utility model, two limiting tracks are arranged on the opposite inner walls of the drain hole respectively, and a pocket groove for accommodating the sliding block is arranged on the inner wall different from the limiting track; the two ends of the sliding block are slidably connected with the two limiting tracks.

[0015] As a further preferred embodiment of the utility model, the protection mechanism further comprises a guide plate, the guide plate is provided with at least one inclined plate arranged at the front end of the vertical plate to guide rainwater, and a plurality of air holes are arranged on the inclined plate.

[0016] As a further preferred embodiment of the utility model, the guide plate further comprises a mounting plate arranged at the upper end of the inclined plate and connected with the side wall of the metering box; the mounting plate is provided with a limiting channel through which the vertical plate passes.

[0017] As a further preferred embodiment of the utility model, a protection tube which can be compressed / expanded and is sleeved on the outer side of the supporting spring is further arranged between the adjusting box and the fixing plate.

[0018] As a further preferred embodiment of the present application, the protective tube is a corrugated tube.

[0019] As a further preferred embodiment of the present application, a screen is arranged in the exhaust hole.

[0020] The present application has the following advantages:

[0021] The protective mechanism provided by the present application mainly serves to improve the moisture-proof effect at the exhaust hole of the metering box, and the protective mechanism can be dynamically adjusted according to the external environment, so as to shield the exhaust hole in rainy days to avoid moisture in the box body, and not to affect the heat dissipation effect of the exhaust hole in sunny days, thereby relieving the drying burden of the moisture absorption bag and helping to reduce the usage amount and replacement frequency of the drying agent in the moisture absorption bag. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 is a perspective view of the present application. Figure 1 FIG. 2 is a perspective view of the present application.

[0023] FIG. 3 is a structure schematic view of the present application at a side view angle. Figure 2 FIG. 4 is a structure schematic view of the present application at a main view angle.

[0024] Figure 3 FIG. 5 is a sectional structure schematic view of the present application at a side wall of the metering box.

[0025] FIG. 6 is a structure schematic view of the present application at an A area. Figure 4 FIG. 7 is a structure schematic view of the present application at a B area. Figure 3 FIG. 8 is a structure schematic view of the present application at a C area.

[0026] Figure 5 FIG. 9 is a structure schematic view of the present application at a D area. Figure 3

[0027] BRIEF DESCRIPTION OF DRAWINGS: metering box 11, exhaust hole 12, screen 13, closure plate 2, fixing frame 3, guide plate 4;

[0028] vertical plate 21;

[0029] fixed plate 31, channel 32, adjusting box 33, sliding column 34, supporting spring 35, protective tube 36;

[0030] bottom plate 331, side plate 332;

[0031] drainage hole 332a, lower vertical plate 332b, upper inclined plate 332c, sliding block 332d;

[0032] inclined plate 41, air hole 42, mounting plate 43, limiting channel 44. DETAILED DESCRIPTION

[0033] ​​​In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right" and the like is based on the orientation or positional relationship shown in the drawings, or is the orientation or positional relationship commonly used when the utility model product is used, or is the orientation or positional relationship commonly understood by those skilled in the art, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0034] In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance

[0035] In the description of the utility model, it is also necessary to note that, unless otherwise explicitly specified and limited, the terms "arrangement", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integrally connected: can be mechanical connection, or electrical connection: can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] The non-metallic metering box is mainly made of high molecular material, compared with the traditional metal metering box, the non-metallic metering box made of high molecular material has better corrosion resistance, heat resistance, weather resistance and other characteristics. The box body is generally provided with a combined mutual inductor, an electric meter, a vacuum circuit breaker and the like (not shown in the figure). The front end of the box body is rotatably connected with a box door, and a handle is arranged on the box door. In order to facilitate internal heat dissipation, the box body is provided with a heat dissipation hole on the side surface where the box door is arranged, which is also convenient for water vapor evaporation in the box body. In order to further ensure the dryness of the box body, the prior art generally installs a moisture absorbing bag at the heat dissipation hole, and the moisture absorbing bag is loaded with a drying agent. However, the amount of water absorbed by the drying agent alone is limited, and the drying agent needs to be replaced frequently, which is not practical.

[0037] As shown in the accompanying Figure 1 As shown in the accompanying Figure 5 The non-metallic metering box provided by the embodiment comprises a metering box 11, an exhaust hole 12 arranged on the side wall of the metering box 11, a protection mechanism arranged on the side wall of the metering box 11, and a closing plate 2.

[0038] The closing plate 2 has at least one vertical plate 21 slidably connected to the side wall of the metering box 11 in the vertical direction, and the vertical plate 21 can completely cover the exhaust hole 12 at least when the vertical plate 21 is lowered to the lowest position.

[0039] A fixed frame 3 is arranged on the side wall of the metering box 11 and located at the upper end of the air vent 12, a fixed plate 31 is arranged on the fixed frame 3, a channel 32 is arranged on the fixed plate 31, an adjusting box 33 is arranged at the upper end of the fixed plate 31, a sliding column 34 is slidably arranged in the channel 32 and used to connect the vertical plate 21 and the adjusting box 33, and a supporting spring 35 is sleeved on the outer end of the sliding column 34 and connected with the upper end of the fixed plate 31 at one end and connected with the lower end of the adjusting box 33 at the other end.

[0040] The adjusting box 33 has a cavity with an upper end communicating with the outside, and the cavity is used to load liquid.

[0041] The vertical plate 21 is preferably parallel to the side wall of the metering box 11, so that there is a certain gap between the vertical plate 21 and the air vent 12, and the vertical plate 21 is mainly used to block the rainwater at the front end of the air vent 12. A screen 13 is arranged on the air vent 12 to prevent sundries from entering the box. The fixed plate 31 is perpendicular to the side wall of the box and can block the rainwater at the upper end of the air vent 12. The upper end of the adjusting box 33 is open to form the above-mentioned cavity, and the cavity is used to receive rainwater. As the load of rainwater increases, the adjusting box 33 presses the supporting spring 35 downward and pushes the sliding column 34 downward, so that the vertical plate 21 located at the lower end of the fixed plate 31 and fixedly connected with the sliding column 34 blocks the area of the air vent 12 gradually increases. It should be noted that the nature of the supporting spring 35 itself, especially the elastic coefficient, is closely related to the descending time and distance of the vertical plate 21. See the following working process for details:

[0042] On a sunny day, there is almost no water in the adjusting box 33, the supporting spring 35 supports the adjusting box 33 in the initial position, at this time the vertical plate 21 is completely located at the upper end of the air vent 12, at this time the air vent 12 has the maximum heat dissipation effect; when it rains, the amount of water in the cavity of the adjusting box 33 gradually increases, the compression degree of the supporting spring 35 increases with the increase of the pressure, at the same time the vertical plate 21 descends, the area covered by the air vent 12 gradually increases, preventing rainwater from entering the box. It should be noted that although the heat dissipation effect of the air vent 12 is reduced after being covered, due to the existence of the supporting spring 35 and the evaporation of the rainwater in the cavity, it is only necessary to select a supporting spring 35 with a suitable elastic coefficient, that is, it can be ensured that the vertical plate 21 will completely cover the air vent 12 only in heavy rain, and the air vent 12 always has the function of heat dissipation in the environment of light rain, and the shielding function at this time is also enough to avoid the problem that the internal devices of the box are damp and malfunction.

[0043] It can be understood that the moisture absorption bag can still be arranged at the air vent 12 in the box, at this time due to the arrangement of the protection mechanism, the drying burden of the moisture absorption bag is alleviated, which helps to reduce the amount and replacement frequency of the drying agent in the moisture absorption bag.

[0044] As a further preferred embodiment of the present application, the adjusting box 33 comprises a bottom plate 331 and four side plates 332 connected to each other to form the cavity; the lower end of the side plate 332 away from the side wall of the metering box 11 is provided with a drain hole 332a.

[0045] The provision of the drain hole 332a helps to quickly drain the accumulated water in the cavity of the adjusting box 33 in the environmental scenario of changing from rainy days to non-rainy days, without affecting the heat dissipation effect of the exhaust hole 12. In the environmental scenario of rainy days, the provision of the drain hole 332a can reduce the speed of water accumulation in the cavity and prolong the heat dissipation time of the exhaust hole 12. More importantly, in the case of the drain hole 332a being always open, it is difficult for water to accumulate in the cavity, and the difficulty of draining water is reduced, which brings the characteristics of dynamic adjustment and gentle lifting of the vertical plate 21, thereby enhancing the waterproof effect at the exhaust hole 12 and reducing the impact on heat dissipation.

[0046] As a further preferred embodiment of the present application, the side plate 332 away from the side wall of the metering box 11 is connected by a lower vertical plate 332b and an upper inclined plate 332c; the drain hole 332a is provided on the lower vertical plate 332b, and the upper inclined plate 332c gradually moves away from the side wall of the metering box 11 from bottom to top. Such arrangement helps to expand the receiving area at the upper end of the cavity and improve the adjustment sensitivity of the protection mechanism.

[0047] As a further preferred embodiment of the present application, the side end of the drain hole 332a is slidably connected with a sliding block 332d for adjusting the size of the drain hole 332a. A specific structure can be that two limiting tracks are respectively provided on the two inner walls of the drain hole 332a, and a pocket groove for accommodating the sliding block 332d is provided on the inner wall different from the limiting track; the two ends of the sliding block 332d are slidably connected with the two limiting tracks. The function of adjusting the size of the drain hole 332a is to adjust the lower limit of the water inflow speed of the cavity by adjusting the size of the aperture, i.e. only when the water inflow speed is greater than the water drainage speed of the drain hole 332a, the water amount in the cavity will increase, and the vertical plate 21 will descend. Since the water inflow speed is positively correlated with the rainfall in the environment, when the rainfall is small, the vertical plate 21 will not descend, and the box body does not need to be protected by the protection mechanism, and the heat dissipation effect remains maximum.

[0048] As a further preferred embodiment of the present application, the protection mechanism further comprises a guide plate 4, the guide plate 4 at least has an inclined plate 41 obliquely arranged at the front end of the vertical plate 21 for guiding rainwater, and a plurality of air holes 42 are provided on the inclined plate 41; the guide plate 4 further comprises a mounting plate 43 arranged at the upper end of the inclined plate 41 and connected with the side wall of the metering box 11; the mounting plate 43 is provided with a limiting passage 44 through which the vertical plate 21 passes.

[0049] The inclined plate 41 can guide the rainwater falling in front of the air vent 12 to avoid entering the air vent 12. The air holes 42 are arranged at equal intervals to avoid interfering with the heat dissipation effect of the air vent 12; the mounting plate 43 not only plays a fixing role, but also the limiting channel 44 arranged thereon helps to improve the stability of the lifting of the vertical plate 21.

[0050] As a further preferred embodiment of the present embodiment, a protective tube 36 which is compressible / extendable and sleeved outside the supporting spring 35 is further arranged between the adjusting box 33 and the fixing plate 31. The protective tube 36 is preferably a compressible / extendable bellows, which is mainly used to avoid the direct contact of the supporting spring 35 with the external environment and the occurrence of rust and other problems. The bellows is a well-known technology, and therefore the present embodiment will not be described in detail.

[0051] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or adopt similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A non-metallic metering box comprising a metering box (11), a vent (12) provided on a side wall of the metering box (11); characterized in that: The side wall of the metering box (11) is further provided with a protection mechanism; the protection mechanism comprises: a closing plate (2) which has at least one vertical plate (21) slidingly connected to the side wall of the metering box (11) in the vertical direction, and which can completely cover the exhaust hole (12) at least when the vertical plate (21) is lowered to the lowest position; a fixing frame (3) which comprises a fixing plate (31) mounted on the side wall of the metering box (11) and located at the upper end of the exhaust hole (12), a channel (32) provided on the fixing plate (31), an adjusting box (33) located at the upper end of the fixing plate (31), a sliding column (34) slidingly connected in the channel (32) and used for connecting the vertical plate (21) and the adjusting box (33), and a supporting spring (35) sleeved on the outer end of the sliding column (34) and connected at one end to the upper end of the fixing plate (31) and at the other end to the lower end of the adjusting box (33); the adjusting box (33) has a cavity in communication with the outside at the upper end, and the cavity is used for loading liquid.

2. A non-metallic metering box according to claim 1, characterized in that: The adjusting box (33) comprises a bottom plate (331) and four side plates (332) connected to each other to form the cavity; the lower end of the side plate (332) away from the side wall of the metering box (11) is provided with a drain hole (332a).

3. A non-metallic metering box according to claim 2, characterized in that: The side plate (332) away from the side wall of the metering box (11) is connected by a lower vertical plate (332b) and an upper inclined plate (332c); the drain hole (332a) is provided on the lower vertical plate (332b), and the upper inclined plate (332c) gradually moves away from the side wall of the metering box (11) from bottom to top.

4. A non-metallic metering box according to claim 2, wherein: The side end of the drain hole (332a) is slidingly connected with a sliding block (332d) used for adjusting the size of the drain hole (332a).

5. A non-metallic metering box according to claim 4, characterized in that: The opposite two inner walls of the drain hole (332a) are respectively provided with two limiting tracks, and the inner walls provided with the limiting tracks are provided with pocket slots used for accommodating the sliding block (332d); the two ends of the sliding block (332d) are slidingly connected with the two limiting tracks.

6. A non-metallic metering box according to claim 1, wherein: The protection mechanism further comprises a guide plate (4) which has at least one inclined plate (41) obliquely provided at the front end of the vertical plate (21) and used for guiding rainwater, and the inclined plate (41) is provided with a plurality of air holes (42).

7. A non-metallic metering box according to claim 6, characterized in that: The guide plate (4) further comprises a mounting plate (43) provided at the upper end of the inclined plate (41) and connected with the side wall of the metering box (11); the mounting plate (43) is provided with a limiting passage (44) through which the vertical plate (21) passes.

8. A non-metallic metering box according to claim 1, wherein: A protection tube (36) which can be compressed / expanded and is sleeved on the outer side of the supporting spring (35) is further provided between the adjusting box (33) and the fixing plate (31).

9. A non-metallic metering box according to claim 8, characterized in that: The protection tube (36) is a bellows.

10. A non-metallic metering box according to claim 1, wherein: The exhaust hole (12) is provided with a screen (13).

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