CN216872595U

CN216872595U - Distribution box

Info

Publication number: CN216872595U
Application number: CN202220227428.XU
Authority: CN
Inventors: 张衍奎; 姚婷; 闫亮; 靳毅; 王川
Original assignee: Ningxia Kaichen Electric Group Co ltd
Current assignee: Ningxia Kaichen Electric Group Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-07-01
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses a distribution box, which is used for solving the problems that in the prior art, an outdoor distribution box is in a high-temperature and high-humidity environment, the natural heat dissipation effect is poor, and condensation and dust form mud dirt to influence the safe operation of the distribution box. The method comprises the following steps: the box body is hermetically connected with the box body, a space formed by the box body and the box door comprises an electric chamber and a drying chamber which are mutually independent, the electric chamber is provided with a negative pressure fan, the drying chamber is provided with an air inlet communicated with the outside of the box body, a dustproof filtering component is arranged at the air inlet, and a drying part is arranged in the drying chamber; the cooling mechanism is arranged outside the box body and comprises an air inlet pipe, a cooling bent pipe and an air outlet pipe which are sequentially connected, the air inlet pipe is communicated with the drying chamber, and the air outlet pipe is communicated with the electric chamber. The dustproof assembly and the filter dehumidifier have the beneficial effects that the dustproof and rainproof structure is convenient to open, the cooling and ventilation effects are good, the service life of components is prolonged, and the dustproof assembly and the filter dehumidifier are very convenient to take out, replace and clean.

Description

Distribution box

The technical field is as follows:

the utility model relates to the technical field of power transmission and distribution engineering, in particular to a distribution box.

Background art:

the block terminal is electrical equipment, has small, simple installation, and technical performance is special, the rigidity, and the configuration function is unique, not restricted by the place, and the application is more general, and the operation is reliable and stable, and space utilization is high, takes up an area of few and has the characteristics of environmental protection effect. It is generally required to assemble switchgear, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen to constitute a low-voltage distribution box. In normal operation, the circuit can be switched on or off by means of a manual or automatic switch.

The low-voltage electrical apparatus in the distribution box, by fuse, ac contactor, residual current action protector, condenser and strapping table, etc. The upper limit of the ambient air temperature does not exceed 40 ℃; the average value of the ambient air temperature for 24h does not exceed 35 ℃; the lower limit of the ambient air temperature is not lower than-5 ℃ or-25 ℃.

However, the distribution box modified by the rural power grid runs outdoors, not only is directly irradiated by sunlight to generate high temperature, but also can generate heat during running, so that the temperature in the box body can reach more than 60 ℃ in high-temperature seasons in midsummer, and the temperature at the moment greatly exceeds the specified environmental temperature of the electric appliances.

In the cool morning, the inside of the distribution box is easily condensed due to the high temperature just formed by the damp and hot air and the outside, and the normal use of the distribution box can be influenced by the damp and hot air. The heat dissipation of block terminal is usually offered a plurality of ventilation holes on the both sides wall, through natural wind ventilation cooling, but this kind of mode radiating effect is poor, and installs at outdoor block terminal, gets into a large amount of dusts easily, and the dirt that dust and condensation formed can influence the safe operation in the block terminal, and inside components and parts of block terminal are in under the environment of high temperature and high humidity, life-span also can greatly reduced.

The utility model has the following contents:

the utility model provides a distribution box, which is used for solving the problems that in the prior art, an outdoor distribution box is in a high-temperature and high-humidity environment, the natural heat dissipation effect is poor, and condensation and dust form mud dirt to influence the safe operation of the distribution box.

An electrical box, comprising: the box body is hermetically connected with the box body, a space formed by the box body and the box door comprises an electric chamber and a drying chamber which are mutually independent, the electric chamber is provided with a negative pressure fan, the drying chamber is provided with an air inlet communicated with the outside of the box body, a dustproof filtering component is arranged at the air inlet, and a drying part is arranged in the drying chamber; the cooling mechanism is arranged outside the box body and comprises an air inlet pipe, a cooling bent pipe and an air outlet pipe which are sequentially connected, the air inlet pipe is communicated with the drying chamber, and the air outlet pipe is communicated with the electric chamber.

Preferably, a partition board is arranged in the box body and used for partitioning a space formed by the box body and the box door into an electric chamber and a drying chamber.

Preferably, the dustproof filtering component comprises a fixing frame, a grating window and dustproof filtering cotton; fixed frame fixed connection is in the air intlet position of box, and the shape of fixed frame and air intlet's shape phase-match are provided with the draw-in groove on the fixed frame, and the grid window can be dismantled with fixed frame and be connected, is provided with the buckle with draw-in groove cooperation installation on the grid window, and the grid window is inside to set up dustproof filter pulp, dustproof filter pulp's shape and air intlet's shape phase-match.

Preferably, the drying component comprises a plurality of dehumidifying filters, the dehumidifying filters are cylindrical, a circle of filter paper is wound outside the dehumidifying filters, and the filter paper is folded into an organ shape.

Preferably, the cooling elbow includes an inlet in communication with the air inlet duct and an outlet in communication with the air outlet duct; an S-shaped coil pipe or a plurality of parallel pipelines is arranged between the inlet and the outlet.

Preferably, the cooling mechanism is buried underground or disposed in the cable trench.

Preferably, set up the cooling body in the cable pit and still include: a cooling tank; the cooling box is provided with a liquid inlet and a liquid outlet; the cooling elbow is arranged in the cooling box, the cooling elbow is connected with the bottom of the cooling box through a support rod, cooling liquid is injected into the cooling box, or a spraying device which is opposite to the cooling elbow is arranged in the cooling box; and reinforcing rib plates which are transversely and longitudinally staggered are arranged outside the cooling box.

Preferably, the negative pressure fan and the air inlet pipe are respectively arranged at two farthest positions of the electric room.

Preferably, the box body is provided with a wire inlet and a wire outlet, and sealing sleeves are arranged on the wire inlet and the wire outlet.

Preferably, the box door is in a box cover shape with four bent surfaces wrapping the opening of the box body, sealing strips are arranged on the periphery of the inner side of the box door, and a power lamp and an alarm lamp are arranged on the box door.

The beneficial effects of the utility model include: dust is prevented from entering the distribution box through the dustproof filter cotton and the external grille window, and then moisture in the air is absorbed through the dehumidification filter, so that the dehumidification effect is achieved; meanwhile, the cooling bent pipe can condense and dissipate the passing hot air, so that the dehumidification and cooling effects are improved; the air in the cooling bent pipe is cooled by underground low temperature or cooling liquid, so that the air is rapidly cooled, enters from the bottom of the electric room through the air outlet pipe, is pumped out through the axial flow fan at the top, the interior of the electric room is kept cool, heat and moisture are continuously dissipated, the cooling effect is good, and the service life of an electric appliance element is greatly prolonged; the electric room is closed, the dustproof and rainproof effect is good, and the opening is convenient; the dustproof assembly and the filter dehumidifier are very convenient to take out, replace and clean.

Description of the drawings:

fig. 1 is a schematic external view of a preferred embodiment of an electrical distribution box.

FIG. 2 is a schematic cross-sectional perspective view of a preferred embodiment of the electrical distribution box;

FIG. 3 is a schematic cross-sectional view of a preferred embodiment of the electrical distribution box;

fig. 4 is a schematic diagram of a preferred embodiment of a moisture removal filter.

In the drawings: the box body-1, the partition plate-101, the wire inlet-102, the wire outlet-103, the box door-2, the power supply lamp and the warning lamp-201, the door lock-202, the electric room-3, the negative pressure fan-301, the check valve-302, the drying room-4, the dehumidifying filter-401, the filter paper-4011, the dustproof filtering component-5, the fixing frame-501, the grille window-502, the dustproof filtering cotton-503, the cooling mechanism-6, the air inlet pipe-601, the cooling bend-602, the air outlet pipe-603, the cooling box-604, the liquid inlet-6041, the liquid outlet-6042, the support rod-6043, the reinforcing rib plate-6044 and the flange connecting piece-605.

The specific implementation mode is as follows:

in order to enable the distribution box to keep dry and normal operating temperature in an outdoor environment and avoid the influence of dust and condensation on internal components, the embodiment of the utility model provides the distribution box, and the preferred embodiment of the utility model is described below by combining with the attached drawings of the specification.

Referring to fig. 1-4, an electrical distribution box includes: the box body 1 is hermetically connected with the box body 1, the box door 2 is hermetically connected with the box body 1, a space formed by the box body 1 and the box door 2 comprises an electric room 3 and a drying room 4 which are mutually independent, the electric room 3 is provided with a negative pressure fan 301, the drying room 4 is provided with an air inlet communicated with the outside of the box body 1, a dustproof filtering component 5 is arranged at the air inlet, and a drying component is arranged in the drying room 4; the cooling mechanism 6 is arranged outside the box body 1 and comprises an air inlet pipe 601, a cooling bent pipe 602 and an air outlet pipe 603 which are sequentially connected, the air inlet pipe 601 is communicated with the drying chamber 4, and the air outlet pipe 603 is communicated with the electric chamber 3.

Specifically, the distribution box mainly comprises a distribution box body and a drying, dehumidifying and cooling mechanism 6; the block terminal body includes box 1 and inside components and parts, and box 1 is the cuboid case that the front side does not have the lid, and 1 open-ended box lid form is lived to chamber door 2 for the four sides parcel of bending, and 2 one sides of chamber door articulate on box 1, and 2 inboards of chamber door are provided with the sealing strip all around, are provided with power lamp and warning light 201 on the chamber door 2, still are provided with lock 202 on the chamber door 2, and lock 202 adopts embedded handle formula lock. Set up baffle 101 in, baffle 101 is used for separating the space that box 1 and chamber door 2 formed, makes it divide into electric room 3 and drying chamber 4, and baffle 101 is generally installed in parallel with the block terminal lateral wall, divides into two spaces about the block terminal, and baffle 101 front edge is close to with chamber door 2, and the front edge of baffle 101 is provided with the sealing strip, and when chamber door 2 closed, can keep apart into solitary space with drying chamber 4 for next door's electric room 3 can be airtight space relatively.

A plurality of dehumidification filters 401 have been placed to drying chamber 4 inside, and the width of drying chamber 4 just in time can hold dehumidification filters 401 from the top down vertical column and arrange, and dehumidification filters 401 is the cylinder tube-shape, and the outside is around round filter paper 4011, and filter paper 4011 is folding for the organ form, and filter paper 4011 can be used for the moisture absorption filtration, and the folding filter paper 4011 that is the organ form can increase its absorption filterable area for drying effect is better. The drying chamber 4 is provided with an air inlet communicating with the outside, and a dust-proof filter assembly 5 is installed at the air inlet for preliminary dust-proof filtering of the air from the air inlet. The dustproof filter assembly 5 comprises a fixing frame 501, a grating window 502 and dustproof filter cotton 503; fixed frame 501 fixed connection is in the air inlet position of box 1, and the shape of fixed frame 501 and air inlet's shape phase-match are provided with the draw-in groove on the fixed frame 501, and grille window 502 can be dismantled with fixed frame 501 and be connected, is provided with the buckle with draw-in groove cooperation installation on the grille window 502, and grille window 502 is inside to be provided with dustproof filter pulp 503, and dustproof filter pulp 503's shape and air inlet's shape phase-match. The outer side of the dustproof filter cotton 503 is provided with a grating window 502, the inner side of the dustproof filter cotton 503 is also provided with a falling fixing part, the dustproof filter cotton 503 can be fixed between the grating window 502 and the inner fixing part, the dustproof filter cotton 503 can be directly fixed, and the dustproof filter cotton 503 is clamped between the other grating window 502; grille window 502 may initially isolate large objects such as fallen leaves, flying insects, etc.; can dismantle through the draw-in groove buckle between grille window 502 and the fixed frame 501 and be connected, can be convenient pull down grille window 502, take out inside dustproof filter pulp 503 and wash the change. The installation position of the dustproof filter assembly 5 and the connection position of the air inlet pipe 601 should be relatively far away to obtain a longer air drying path and a better drying effect.

The inside low-voltage apparatus that is by electric room 3, by the fuse, ac contactor, residual current action protector, condenser and strapping table etc. constitute, electric room 3 top or lateral wall set up circular air outlet, negative-pressure air fan 301 is installed to the air outlet, negative-pressure air fan 301 adopts axial fan, axial fan department sets up check valve 302, check valve 302's ventilation direction is by the inside outside to of block terminal, negative-pressure air fan 301 and air-supply line 601 are installed respectively in two extreme positions of electric room 3, the air-supply line 601 is installed in electric room 3 bottom and is preferred. The side wall of the electric room 3 is provided with a wire inlet 102 and a wire outlet 103, and sealing sleeves are arranged on the wire inlet 102 and the wire outlet 103.

The cooling mechanism 6 is arranged outside the box body 1 and comprises an air inlet pipe 601, a cooling bent pipe 602 and an air outlet pipe 603 which are sequentially connected, the air inlet pipe 601 is communicated with the drying chamber 4 and is connected through a flange connecting piece 605, and the air outlet pipe 603 is communicated with the electric room 3 and is connected through the flange connecting piece 605; the cooling bend 602 includes an inlet in communication with the bottom of the air inlet duct 601 and an outlet in communication with the bottom of the air outlet duct 603; an S-shaped coil pipe or a plurality of parallel pipelines is arranged between the inlet and the outlet. The shape of the cooling bend 602 may increase the heat dissipation area; the cooling mechanism 6 may be buried underground or installed in a cable trench. When the cooling elbow pipe 602 is buried underground, the cooling elbow pipe 602 is partially buried in the soil with low temperature, and the cooled air is directly sent to the electric room 3 through the air inlet pipe 601; when the cable trench is arranged, a cooling box 604 can be arranged; the cooling box 604 is provided with a liquid inlet 6041 and a liquid outlet 6042; the cooling elbow 602 is arranged inside the cooling box 604, the cooling elbow 602 is connected with the bottom of the cooling box 604 through a support rod 6043, cooling liquid is injected into the cooling box 604, or a spraying device opposite to the cooling elbow 602 is arranged inside the cooling box 604; and reinforcing rib plates 6044 which are transversely and longitudinally staggered are arranged outside the cooling box 604.

The device provided by the utility model is described in detail with specific embodiments in conjunction with the accompanying drawings.

When in use: the distribution box comprises a distribution box body 1, an air inlet pipe 601, an air outlet pipe 603 and a lower cooling bent pipe 602, wherein the distribution box body is arranged on the upper part of the ground, the air inlet pipe 601, the air outlet pipe 603 and the lower cooling bent pipe 602 are arranged below the ground (without a cooling box 604), the distribution box can be buried in soil deep in the ground and can also be arranged in a basement, or the cooling box 604 is arranged outside the cooling bent pipe 602, cooling liquid is arranged in the cooling box 604, or a water spraying device is arranged outside a condensation pipe, and the cooling of air in the cooling bent pipe 602 can be realized in various modes; at the air inlet of the drying chamber 4, the dust-proof meshes on the grille window 502 and the dust-proof filter cotton 503 inside can effectively filter dust in the air, the air entering the drying chamber 4 is dehumidified and dried by the dehumidifying filter 401, and enters the air inlet pipe 601 from the dry air outlet at the bottom, the hot air in the air inlet pipe 601 is cooled and condensed by the low temperature of the soil at the ground bottom or the cooling liquid, the condensed water can further dissipate heat and cool, and the moisture in the air is further reduced; finally, cold air flows are converged into the air outlet pipe 603 and enters the electric room 3 on the upper portion of the air outlet pipe 603, the negative pressure fan 301 on the top of the electric room 3 serves as a power source, internal air is continuously exchanged out, and heat dissipation of the interior of the electric room 3 is achieved. The non-return valve 302 allows air to be expelled only from the inside to the outside. When the filter element of the dehumidifying filter 401 is replaced, the box door 2 is opened for direct replacement; when changing dustproof filter pulp 503, open the buckle about grille window 502, directly take out dustproof filter pulp 503, can directly wash, dry the back, repetitious usage. The box door 2 and the box body 1 are designed to be equal in height, so that the whole distribution box is hidden behind the box door 2, and the appearance is concise and elegant. Adopt embedded handle formula lock 202, during the use, the handle can be bounced open, hides lock 202 after chamber door 2 locks, has solved block terminal door 2 and has not had the handle to open inconvenient problem. And the block terminal is internally sealed, avoids dust and rainwater to get into inside, has improved the distribution security performance of block terminal.

A temperature and humidity sensor is arranged in the electric room 3, and when any one of the temperature or the humidity reaches the upper threshold, the axial flow fan is turned on to start the heat dissipation and dehumidification operation.

In summary, the distribution box of the utility model prevents dust from entering the distribution box through the dustproof filter cotton 503 and the external grille window 502, and then absorbs moisture in the air through the dehumidifying filter 401, thereby achieving the dehumidifying effect; meanwhile, the cooling bent pipe 602 can condense and dissipate the passing hot air, so that the dehumidification and cooling effects are improved; the air in the cooling bent pipe 602 is cooled by underground low temperature or cooling liquid, so that the air is rapidly cooled, enters from the bottom of the electric room 3 through the air outlet pipe 603, is pumped out through the axial flow fan at the top, so that the inside of the electric room 3 is kept cool, heat and moisture are continuously dissipated, the cooling effect is good, and the service life of an electric appliance element is greatly prolonged; the electric room is closed, the dustproof and rainproof effects are good, and the electric room is convenient to open; the dustproof assembly and the filter dehumidifier are very convenient to take out, replace and clean.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An electrical box, comprising: the box body is connected with the box body in a sealing mode, a space formed by the box body and the box door comprises an electrical chamber and a drying chamber which are mutually independent, the electrical chamber is provided with a negative pressure fan, the drying chamber is provided with an air inlet communicated with the outside of the box body, a dustproof filtering component is installed at the air inlet, and a drying component is arranged in the drying chamber; cooling body set up in the box is outside, including the air-supply line, cooling return bend and the play tuber pipe that connect gradually, the air-supply line with the drying chamber intercommunication, go out the tuber pipe with electric room intercommunication.

2. The electrical box of claim 1, wherein a partition is disposed within the box body, the partition separating a space defined by the box body and the box door into the electrical compartment and the drying compartment.

3. The electrical distribution box of claim 1, wherein the dust filtration assembly comprises a fixed frame, a grille window, and dust filtration wool; the fixed frame is fixedly connected with the box body at the air inlet position, the shape of the fixed frame is matched with that of the air inlet, a clamping groove is formed in the fixed frame, the grating window is detachably connected with the fixed frame, a buckle matched with the clamping groove is arranged on the grating window, the dustproof filter cotton is arranged in the grating window, and the shape of the dustproof filter cotton is matched with that of the air inlet.

4. The electrical box of claim 1, wherein said drying means comprises a plurality of moisture removing filters having a cylindrical shape and externally surrounding a ring of filter paper, said filter paper being folded in an accordion shape.

5. The electrical box of claim 1, wherein said cooling coil includes an inlet in communication with said air inlet duct and an outlet in communication with said air outlet duct; an S-shaped coil pipe or a plurality of parallel pipelines is arranged between the inlet and the outlet.

6. The electrical box of claim 5, wherein the cooling mechanism is buried underground or disposed in a cable trench.

7. The electrical box of claim 6, wherein the cooling mechanism disposed in the cable trench further comprises: a cooling tank; the cooling box is provided with a liquid inlet and a liquid outlet; the cooling elbow is arranged in the cooling box, the cooling elbow is connected with the bottom of the cooling box through a support rod, cooling liquid is injected into the cooling box, or a spraying device which is opposite to the cooling elbow is arranged in the cooling box; and reinforcing rib plates which are transversely and longitudinally staggered are arranged outside the cooling box.

8. The electrical cabinet of claim 1, wherein the negative pressure air blower and the air inlet duct are respectively mounted at two distal-most positions of the electrical room.

9. The distribution box of claim 1, wherein the box body is provided with a wire inlet and a wire outlet, and sealing sleeves are arranged on the wire inlet and the wire outlet.

10. The distribution box according to claim 1, wherein the box door is in a box cover shape with four bent sides for covering the opening of the box body, the sealing strips are arranged on the periphery of the inner side of the box door, and the power lamp and the warning lamp are arranged on the box door.