CN220066623U - Outdoor waterproof switch board - Google Patents

Abstract

The utility model discloses an outdoor waterproof power distribution cabinet, which relates to the technical field of power distribution cabinets and comprises: the outer cabinet body is provided with a heat radiation opening on the side wall close to the bottom, the bottom of the outer cabinet body is provided with a plurality of ventilation holes, and the heat radiation opening is communicated with part of the ventilation holes; the inner cabinet body is arranged in the outer cabinet body, the inner cabinet body is provided with an air inlet, and the air inlet is arranged at a position, close to the top, of the inner cabinet body; the air pump, the air pump is installed the outer wall that the interior cabinet body is close to the top, the air pump's air suction nozzle sets up the inside of the interior cabinet body, the exhaust nozzle of air pump is connected with the ventilation pipe, the air supply end of ventilation pipe with the thermovent of the outer cabinet body communicates each other. Through foretell technical scheme, reached and made outdoor switch board compromise rain-proof water and radiating effect.

Description

Outdoor waterproof switch board

Technical Field

The utility model relates to the technical field of power distribution cabinets, in particular to an outdoor waterproof power distribution cabinet.

Background

The distribution box is a low-voltage distribution device which is formed by assembling switching equipment, measuring instruments and protective electric box auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electric wiring requirement, and a circuit can be switched on or off by means of a manual or automatic switch in normal operation.

When some outdoor electrical equipment installs and uses, also can correspond the outdoor switch board that sets up generally and match and use, and the inside electrical component of switch board has more heat production in the course of the work to because the switch board is placed in the open air, also receive the irradiation of sun easily, the condition that leads to the inside high temperature of switch board appears, influences electrical component's life. Therefore, heat dissipation for the power distribution cabinet is necessary. And the outdoor power distribution cabinet is further prevented from being damaged by rainwater entering the cabinet body, so that the outdoor rainwater prevention requirement is met.

Disclosure of Invention

The utility model aims to provide an outdoor waterproof power distribution cabinet, which has the effects of rain resistance and heat dissipation.

The utility model provides an outdoor waterproof power distribution cabinet which adopts the following technical scheme that:

the outer cabinet body is provided with a heat radiation opening on the side wall close to the bottom, the bottom of the outer cabinet body is provided with a plurality of ventilation holes, and the heat radiation opening is communicated with part of the ventilation holes;

the inner cabinet body is arranged in the outer cabinet body, the inner cabinet body is provided with an air inlet, and the air inlet is arranged at a position, close to the top, of the inner cabinet body;

the air pump, the air pump is installed the outer wall that the interior cabinet body is close to the top, the air pump's air suction nozzle sets up the inside of the interior cabinet body, the exhaust nozzle of air pump is connected with the ventilation pipe, the air supply end of ventilation pipe with the thermovent of the outer cabinet body communicates each other.

Through adopting above-mentioned technical scheme, reached and made the switch board possess good rain-proof performance and good ventilation function's effect simultaneously. The lateral wall that the outer cabinet body is close to the bottom has seted up the thermovent, and a plurality of ventilation holes have been seted up to outer cabinet body bottom, and thermovent and partial ventilation hole communicate each other, so, can prevent that the rainwater from directly penetrating the condition emergence of contacting the inner cabinet body to one side through the thermovent of the outer cabinet body. The air inlet is formed in the side wall, close to the top, of the inner cabinet body, the air pump is arranged on the side wall, close to the top, of the inner cabinet body, the air suction nozzle of the air pump is arranged in the inner cabinet body, the air exhaust nozzle of the air pump is connected with the ventilation pipe, and the air supply end of the ventilation pipe is communicated with the heat dissipation port of the outer cabinet body. So, the air current is in the intermediate layer space of the internal cabinet body and the external cabinet body of ventilation hole entering through the external cabinet body, and the air current rethread internal cabinet body's air intake gets into the internal cabinet body, and the gas of the internal cabinet body is taken out again through the aspiration pump to send out the heat flow through the ventilation pipe. Therefore, the power distribution cabinet has good rainproof performance and good ventilation function.

Optionally, the inside polylith division board that is equipped with of interior cabinet, set up the louvre on the division board, the bottommost the division board keep away from one side of aspiration pump with the space that interior cabinet formed is the water barrier, do not place electrical component in the water barrier.

By adopting the technical scheme, when the power distribution cabinet is in a rainy season, particularly in a region where partial rainfall is more likely to generate water fluctuation, the power distribution cabinet can be submerged. Although the switch board all possesses certain water-proof effects, nevertheless if the switch board soaks in aqueous for a long time, still have some hydroenergy to permeate into the switch board in, and do not establish electrical component in the bottom of switch board for the rainwater can not unable electrical component in the internal cabinet body of first time contact, can strive for enough time for the follow-up transfer of switch board.

Optionally, the air pump further comprises a sealing element, wherein the sealing element is movably connected in a pipeline of the air pipe far away from the air pump, and the sealing element can open and close the air pipe according to the height of the liquid level.

By adopting the technical scheme, when the rain season is in, especially in a region where partial rainfall is more likely to generate high water, rainwater can possibly enter the inner cabinet body along the pipeline of the ventilation pipe. And the sealing element is movably connected in the pipeline of the ventilating pipe far away from the air extracting pump, when rainwater comes, the sealing element can form sealing with the pipeline due to buoyancy of water, so that the rainwater is prevented from entering the inner cabinet body through the pipeline.

Optionally, the sealing member includes sealing plug and fixed plate, the sealing plug includes sealing portion and butt portion, the one end fixed connection of sealing portion butt portion, the fixed plate is installed the ventilation pipe is kept away from on the lateral wall of the pipeline of aspiration pump, the through-hole has been seted up on the fixed plate, sealing portion can with the pore wall butt of through-hole, butt portion can with the fixed plate is kept away from the terminal surface butt of aspiration pump, the diameter of butt portion is less than the internal diameter of ventilation pipe.

Through adopting above-mentioned technical scheme, when rainwater is enough, water can get into from the ventilation pipe, and the sealing plug can rise upwards owing to the effect of buoyancy, until the sealing portion butt of sealing plug and the pore wall butt of the through-hole of fixed plate, butt portion and the terminal surface butt of fixed plate form the seal to the ventilation pipe, prevent that the rainwater from getting into in the cabinet from the end of supplying air of ventilation pipe.

Optionally, the size of the sealing portion increases gradually in a direction away from the suction pump.

By adopting the technical scheme, the sealing part of the sealing plug is better attached to the hole wall of the through hole of the fixed plate, so that the ventilation pipe is better sealed.

Optionally, the sealing member includes movable partition and stopper, movable partition swing joint is in the ventilation pipe is kept away from one side in the pipeline of aspiration pump, the stopper is installed the opposite side in the pipeline of ventilation pipe, the side of movable partition can with stopper butt.

By adopting the technical scheme, the effect of preventing rainwater from entering the inner cabinet body through the ventilation pipe is achieved. When the water level rises, the movable partition plate can rise until being mutually abutted with the limiting block due to buoyancy, so that the heat dissipation opening is sealed, and the effect of preventing rainwater from contacting the electric elements of the inner cabinet body is achieved. When the water level is retreated, the movable partition board is far away from the limiting block due to the gravity of the movable partition board due to the fact that the floating force is not generated.

Optionally, the sealing member further comprises a sealing ring, and the sealing ring is attached to the periphery side of the movable partition plate.

By adopting the technical scheme, the effect of better sealing the heat dissipation port is achieved. Although the movable partition board and the limiting block are mutually abutted to have a certain waterproof effect, if rainwater is accumulated for a long time, part of rainwater still permeates. And the sealing ring is attached to the periphery of the movable partition plate, so that the waterproof effect can be further enhanced.

Optionally, the air conditioner further comprises a drying agent, wherein the drying agent is installed at the air inlet of the inner cabinet body.

Through adopting above-mentioned technical scheme, guaranteed the inside drying of interior cabinet body, reduced the trouble and the circumstances of damage that electrical equipment leads to owing to the humidity of gas is too high effectively.

Optionally, the device further comprises a hanging ring, wherein the hanging ring is fixedly connected to the top of the outer cabinet body.

Through adopting above-mentioned technical scheme, when the position that needs to shift the switch board, can use equipment such as crane or hoist to shift the switch board light to safe place.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the side wall of the outer cabinet body, which is close to the bottom, is provided with a heat radiation opening, the bottom of the outer cabinet body is provided with a plurality of ventilation holes, the heat radiation opening is communicated with part of ventilation holes, and the position of the inner cabinet body, which is close to the top, is provided with an air inlet; the outer wall of the inner cabinet body, which is close to the top, is provided with an air suction nozzle, the air suction nozzle of the air suction pump is arranged in the inner cabinet body, an exhaust nozzle of the air suction pump is connected with a ventilation pipe, and an air supply end of the ventilation pipe is communicated with a heat dissipation opening of the outer cabinet body. Through adopting above-mentioned technical scheme, reached and made the switch board possess good rain-proof performance and good ventilation function's effect simultaneously.

2. The inner cabinet body is internally provided with a plurality of partition plates, the partition plates are provided with heat dissipation holes, the space formed by one side, far away from the air pump, of the bottom partition plate and the inner cabinet body is a water-resisting layer, and no electric element is placed in the water-resisting layer. By adopting the technical scheme, enough reaction time can be striven for the follow-up transfer of the power distribution cabinet.

3. The sealing element is movably connected in a pipeline of the ventilating pipe far away from the air pump, and the sealing element can open and close the ventilating pipe according to the height of the liquid level. By adopting the technical scheme, rainwater can be prevented from entering the cabinet body from the air supply end of the ventilation pipe.

Drawings

Fig. 1 is a sectional view of an outdoor waterproof power distribution cabinet according to embodiment 1 of the present utility model;

fig. 2 is a schematic diagram showing connection between a sealing member and a ventilation pipe of an outdoor waterproof power distribution cabinet according to embodiment 1 of the present utility model;

fig. 3 is a schematic diagram showing connection between a sealing member and a ventilation pipe of an outdoor waterproof power distribution cabinet according to embodiment 2 of the present utility model.

In the figure, 1, an outer cabinet body; 11. a heat radiation port; 12. a vent hole; 2. an inner cabinet body; 21. an air inlet; 22. a partition plate; 221. a heat radiation hole; 23. a water-resistant layer; 24. an inner cabinet door; 3. an air extracting pump; 31. a suction nozzle; 32. an exhaust nozzle; 4. a ventilation pipe; 41. an air supply end; 5. a seal; 51. a sealing plug; 511. a sealing part; 512. an abutting portion; 52. a fixing plate; 521. a through hole; 53. a movable partition; 54. a limiting block; 6. a drying agent; 7. a hanging ring; 8. a glazing.

Detailed Description

The present utility model will be described in further detail with reference to fig. 1 to 3.

Example 1:

referring to fig. 1, an outdoor waterproof power distribution cabinet includes: the novel air conditioner comprises an outer cabinet body 1, an inner cabinet body 2, an air pump 3, a ventilation pipe 4, a sealing piece 5, a drying agent 6, a hanging ring 7 and a glass window 8. Wherein:

referring to fig. 1, an outer cabinet 1 is shown, the outer cabinet 1 is provided with a heat dissipation opening 11, the heat dissipation opening 11 is formed on a side wall near the bottom of the outer cabinet 1, the bottom of the outer cabinet 1 is provided with a plurality of ventilation holes 12, and the heat dissipation opening is mutually communicated with a part of ventilation holes 12.

The inner cabinet body 2 is arranged in the outer cabinet body 1, the inner cabinet body 2 is provided with an air inlet 21, and the air inlet 21 is arranged at a position, close to the top, of the inner cabinet body 2. Although the inner cabinet 2 has a certain anti-corrosion effect, if the outer surface of the inner cabinet 2 contacts rainwater for a long time, the outer surface of the inner cabinet 2 is rusted. The cooling port 11 of the outer cabinet body 1 is arranged at the bottom side of the outer cabinet body 1, the plurality of ventilation holes 12 of the outer cabinet body 1 are arranged at the bottom of the outer cabinet body 1, rainwater cannot be obliquely injected into the inner cabinet body 2 from the cooling port 11 and the ventilation holes 12, and therefore the occurrence of the humid condition of the inner cabinet body 2 caused by the rainwater is avoided, and the probability of rusting of the outer surface of the inner cabinet body 2 is reduced.

When the power distribution cabinet is in a rainy season, particularly in a region where partial rainfall is more likely to generate water rising, the power distribution cabinet may be submerged by rainwater, and the rainwater can enter a space interlayer between the outer cabinet 1 and the inner cabinet 2 through the heat dissipation port 11 and the vent hole 12 of the outer cabinet 1. Although the inner cabinet 2 also has a certain waterproof effect, if the inner cabinet 2 is soaked in water for a long time, a part of water can be permeated into the inner cabinet 2 through the gaps between the inner cabinets 2. The air inlet 21 of the inner cabinet 2 is arranged at a position close to the top of the inner cabinet 2, a plurality of partition plates 22 are arranged in the inner cabinet 2, heat dissipation holes 221 are formed in the partition plates 22, a space formed by the lower end of the lowest partition plate 22 and the inner cabinet 2 is a water-proof layer 23, and no electrical element is placed in the water-proof layer 23. Thus, even if part of rainwater can infiltrate into the inner cabinet body 2, the infiltrated rainwater can flow into the water-resisting layer 23 along the side wall of the inner cabinet body 2 and is isolated in the water-resisting layer 23, so that the rainwater can not contact with the electric elements in the inner cabinet body 2 at the first time, and enough reaction time can be obtained for the subsequent transfer of the power distribution cabinet.

The air pump 3 is arranged on the outer wall of the inner cabinet 2 close to the top, the air suction nozzle 31 of the air pump 3 is arranged in the inner cabinet 2, the air discharge nozzle 32 of the air pump 3 is connected with the ventilation pipe 4, and the air supply end 41 of the ventilation pipe 4 is communicated with the heat radiation port 11 of the outer cabinet 1. In this way, the air flow enters the interlayer space between the inner cabinet 2 and the outer cabinet 1 through the heat dissipation opening 11 and the ventilation opening 12 of the outer cabinet 1, then enters the inner cabinet 2 through the air inlet 21 of the inner cabinet 2, and then flows through the heat dissipation opening 221 of the partition plate 22 of the inner cabinet 2. The circulated air flow contacts with the electric components, then the air flow of the inner cabinet 2 is pumped out by the air pump 3, and finally the heat flow is sent out by the ventilation pipe 4. The arrangement of the heat dissipation opening 11 and the ventilation hole 12 of the outer cabinet body 1 ensures that the power distribution cabinet has good rainproof performance and good ventilation function.

Referring to fig. 1 and 2, the sealing member 5 can open and close the ventilation pipe 4 according to the level of the liquid. In this embodiment, the sealing member 5 includes a sealing plug 51 and a fixing plate 52, the sealing plug 51 includes a sealing portion 511 and an abutting portion 512, the lower end of the sealing portion 511 and the abutting portion 512 are integrally formed, the fixing plate 52 is mounted on a side wall of the duct of the ventilation duct 4 away from the air pump 3, a through hole 521 is formed in the fixing plate 52, the sealing portion 511 can abut against a wall of the through hole 521, and the abutting portion 512 can abut against a lower end face of the fixing plate 52. When the rain season is in, especially, a region with partial rainfall and high water flow occurs, if the sealing piece 5 is not provided, when the rain is enough, the rain can enter the inner cabinet body 2 along the pipeline of the ventilation pipe 4, and the rain contacts with the electric elements in the inner cabinet body 2, so that the electric elements are scrapped, and the electric elements can cause current around the power distribution cabinet, so that certain potential safety hazards exist in the power distribution cabinet. In this embodiment, the diameter of the abutting portion 512 of the sealing plug 51 is smaller than the inner diameter of the ventilation pipe 4, and when the rainwater is sufficiently large, the sealing plug 51 will rise upwards due to the buoyancy of the water until the sealing portion 511 of the sealing plug 51 abuts against the hole wall of the through hole 521 of the fixing plate 52, and the abutting portion 512 abuts against the end face of the fixing plate 52, so as to form a seal against the ventilation pipe 4. In this way, rainwater is prevented from entering the inner cabinet 2 from the ventilation pipe 4, and when the water level is removed, the sealing plug 51 falls down due to its own weight, so that the sealing plug 51 is separated from the fixing plate 52.

If the size of the sealing portion 511 of the sealing plug 51 and the size of the through hole 521 of the fixing plate 52 are both cylindrical, since the diameter of the abutting portion 512 of the sealing plug 51 is smaller than the inner diameter of the ventilation pipe 4, the sealing plug 51 may shake left and right when the sealing plug 51 moves upward due to the buoyancy of water, and it is often difficult for the sealing portion 511 of the sealing plug 51 to align with the through hole 521 of the fixing plate 52. When the top of the sealing portion 511 of the sealing plug 51 abuts against the lower end of the fixing plate 52, the sealing plug 51 cannot form a seal with the ventilation pipe 4, so that water enters the inner cabinet 2 along the pipeline of the ventilation pipe 4. The size of the sealing portion 511 increases gradually from top to bottom, and the aperture of the through hole 521 increases gradually from top to bottom, so that when the sealing portion 511 of the sealing plug 51 is not aligned with the through hole 521, the side surface of the sealing portion 511 contacts with the side wall of the through hole 521, so that the sealing portion 511 slides toward the center of the through hole 521. In this way, the sealing portion 511 of the sealing plug 51 can be more easily bonded to the wall of the through hole 521 of the fixing plate 52, and the ventilation pipe 4 can be more sealed.

And a drying agent 6 is installed at the air inlet 21 of the inner cabinet 2, and the drying agent 6 is used for keeping the interior of the inner cabinet 2 dry. In an outdoor environment, the power distribution cabinet is often subjected to humid and rainy conditions, and if the humidity inside the inner cabinet body 2 of the power distribution cabinet is too high, corrosion and aging of electrical equipment can be accelerated, and even electrical faults are caused. And install drier 6 in the air intake 21 department of cabinet body 2, when gas want to follow the air intake 21 department of cabinet body 2 and get into in the cabinet body 2, gas can contact with drier 6 earlier, get rid of the moisture that carries in the gas, reduced the trouble and the circumstances of damage that electrical equipment leads to because the humidity of gas is too high effectively, improved the security of switch board.

And the hanging ring 7 is fixedly connected to the top of the outer cabinet body 1 and is used for conveniently transferring the power distribution cabinet. When the water distribution cabinet is in a rainy season, particularly in a region where partial rainfall is more likely to generate flood, the power distribution cabinet can be submerged when the rainwater is large enough. If the power distribution cabinet cannot be transferred in time, the power distribution cabinet is immersed in water for a long time and can be damaged. The hanging ring 7 is fixedly connected to the top of the outer cabinet body 1, so that the power distribution cabinet can be easily transferred to a safe place by using equipment such as a crane or a hoist when the rainfall is enough or other positions where the power distribution cabinet needs to be transferred.

In other embodiments, the power distribution cabinet further comprises a glass window 8, wherein an inner cabinet door 24 is installed on one side of the inner cabinet body 2, and the glass window 8 is installed at a position, close to the top, of the inner cabinet door 24. The outdoor environment is complicated, and the switch board can receive the influence of multiple factors such as rainwater, dust, corruption, brings very big challenge to the use and the maintenance of switch board. If there is no glass window 8, the operator can only observe the equipment by opening the inner cabinet door 24, and if the inner cabinet door 24 is opened frequently, moist water vapor may enter the inner cabinet body 2, so that the stability and the service life of the electrical components in the inner cabinet body 2 are affected. And the glass window 8 is arranged on the top side of the inner cabinet body 2, an operator can observe the running state of the inner equipment through the glass window 8 without opening the inner cabinet door 24, the contact between water vapor and the electric elements is reduced, and the service life of the electric elements is prolonged.

The principle of the embodiment of the utility model is as follows: the cooling port 11 and the ventilation hole 12 of the outer cabinet body 1 are formed in the bottom of the cabinet body, rainwater is prevented from being obliquely injected into the inner cabinet body 2, the position, close to the top, of the inner cabinet body 2 is provided with the air inlet 21, and the air pump 3 is mounted on the outer wall, close to the top, of the inner cabinet body 2. In this way, the air flow enters the space interlayer between the inner cabinet 2 and the outer cabinet 1 through the heat dissipation opening 11 and the ventilation hole 12 of the outer cabinet 1, the air flow firstly contacts with the drying agent 6, then enters the inner cabinet 2 through the air inlet of the inner cabinet 2, circulates in the inner cabinet 2, and finally is discharged out of the inner cabinet 2 through the air pump 3 and the ventilation pipe 4. When rainwater wants to enter the inner cabinet 2 from the ventilation pipe 4, the sealing plug 51 floats upwards due to buoyancy of water to seal the ventilation pipe 4, and when the water level is removed, the sealing plug 51 is separated from the ventilation pipe 4. And when the power distribution cabinet needs to be transferred, the power distribution cabinet can be easily transferred through the hanging ring 7 on the outer cabinet body 1.

Example 2:

referring to fig. 1 and 3, an outdoor waterproof power distribution cabinet provided in embodiment 2 is substantially the same as the outdoor waterproof power distribution cabinet provided in embodiment 1, and is different in the sealing member 5. The sealing element 5 comprises a movable partition plate 53 and a limiting block 54, wherein the movable partition plate 53 is hinged to one side of the ventilation pipe 4 in a pipeline far away from the air pump 3, the limiting block 54 is arranged on the other side of the ventilation pipe 4 in the pipeline, and the side edge of the movable partition plate 53 can be abutted with the limiting block 54.

In this embodiment, when the water level rises, the movable partition plate 53 can rise upwards due to the action of the buoyancy until the upper end surface of the movable partition plate 53 and the lower end surface of the limiting block 54 are in contact with each other, and at this time, the movable partition plate 53 just plugs the ventilation pipe 4 to realize the sealing of the ventilation pipe 4, thereby preventing the occurrence of the scrapping of the electrical components caused by the fact that rainwater rises from the inside of the pipeline of the ventilation pipe 4 until contacting the electrical components of the inner cabinet 2. When the water level is removed, the movable partition plate 53 is far away from the limiting block 54 due to the gravity of the movable partition plate 53 because the movable partition plate 53 is not supported by buoyancy. And the seal member 5 further includes a seal ring fitted to the peripheral side of the movable partition 53. Although the contact between the movable partition 53 and the stopper 54 does provide a certain waterproof effect, if a large amount of water is accumulated for a long period of time below the movable partition 53 and the stopper 54, a part of rainwater may infiltrate from the gap between the movable partition 53 and the control plate to above the movable partition 53. And the sealing ring is attached to the periphery of the movable partition plate 53, so that a gap between the movable partition plate 53 and the limiting block 54 can be filled, and the waterproof effect of the movable partition plate 53 and the limiting block 54 is further enhanced. The implementation principle of the present embodiment is basically the same as that of embodiment 1, and will not be repeated here.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (9)

1. An outdoor waterproof switch board, its characterized in that includes:

the novel multifunctional portable multifunctional cabinet comprises an outer cabinet body (1), wherein a radiating opening (11) is formed in the side wall, close to the bottom, of the outer cabinet body (1), a plurality of ventilation holes (12) are formed in the bottom of the outer cabinet body (1), and the radiating opening (11) is communicated with part of the ventilation holes (12);

the inner cabinet body (2) is arranged inside the outer cabinet body (1), the inner cabinet body (2) is provided with an air inlet (21), and the air inlet (21) is arranged at a position, close to the top, of the inner cabinet body (2);

the air pump (3), air pump (3) are installed the outer wall that cabinet body (2) are close to the top in, air pump (3) bleed nozzle (31) set up the inside of cabinet body (2), air pump (3) exhaust nozzle (32) are connected with ventilation pipe (4), air supply end (41) of ventilation pipe (4) with thermovent (11) intercommunication each other of outer cabinet body (1).

2. An outdoor waterproof power distribution cabinet according to claim 1, characterized in that: the novel air conditioner is characterized in that a plurality of partition plates (22) are arranged inside the inner cabinet body (2), heat dissipation holes (221) are formed in the partition plates (22), the space formed by one side, far away from the air pump (3), of the partition plates (22) and the inner cabinet body (2) is a water-resisting layer (23), and no electric element is placed in the water-resisting layer (23).

3. An outdoor waterproof power distribution cabinet according to claim 2, characterized in that: the air pump further comprises a sealing element (5), the sealing element (5) is movably connected in a pipeline of the air pipe (4) far away from the air pump (3), and the sealing element (5) can open and close the air pipe (4) according to the height of the liquid level.

4. An outdoor waterproof power distribution cabinet according to claim 3, characterized in that: sealing piece (5) include sealing plug (51) and fixed plate (52), sealing plug (51) include sealing portion (511) and butt portion (512), the one end fixed connection of sealing portion (511) butt portion (512), fixed plate (52) are installed ventilation pipe (4) are kept away from on the lateral wall of the pipeline of aspiration pump (3), through-hole (521) have been seted up on fixed plate (52), sealing portion (511) can with the pore wall butt of through-hole (521), butt portion (512) can with fixed plate (52) are kept away from the terminal surface butt of aspiration pump (3), the diameter of butt portion (512) is less than the internal diameter of ventilation pipe (4).

5. An outdoor waterproof power distribution cabinet according to claim 4, wherein: the size of the sealing part (511) gradually increases along the direction away from the air pump (3).

6. An outdoor waterproof power distribution cabinet according to claim 3, characterized in that: the sealing element (5) comprises a movable partition plate (53) and a limiting block (54), wherein the movable partition plate (53) is movably connected to one side, away from the air pump (3), of the ventilation pipe (4) in a pipeline, the limiting block (54) is arranged on the other side, in the pipeline, of the ventilation pipe (4), and the side edge of the movable partition plate (53) can be abutted to the limiting block (54).

7. The outdoor waterproof power distribution cabinet of claim 6, wherein: the sealing piece (5) further comprises a sealing ring, and the sealing ring is attached to the periphery of the movable partition plate (53).

8. An outdoor waterproof power distribution cabinet according to any one of claims 1-7, wherein: the novel cabinet also comprises a drying agent (6), wherein the drying agent (6) is arranged at the air inlet (21) of the inner cabinet body (2).

9. An outdoor waterproof power distribution cabinet according to claim 1, characterized in that: the novel cabinet also comprises a hanging ring (7), wherein the hanging ring (7) is fixedly connected to the top of the outer cabinet body (1).