Anti-salt mist power distribution cabinet and dehumidification method thereof

Abstract

The invention relates to the technical field of salt mist prevention, in particular to a salt mist prevention power distribution cabinet and a dehumidification method thereof.The salt mist prevention power distribution cabinet comprises a body and a moisture absorption layer, the body is provided with a cavity and comprises a first shell and a second shell, the first shell is an insulating shell, and the first shell and the second shell are arranged in a spaced mode; the surface of the side, away from the second shell, of the first shell forms the inner wall face of the cavity, the surface of the side, away from the first shell, of the second shell forms the outer wall face of the body, the portion between the first shell and the second shell is filled with the moisture absorption layer, the moisture absorption layer is provided with ventilation ducts penetrating through the moisture absorption layer in the thickness direction of the moisture absorption layer, and the first shell is provided with first through holes. The first shell is provided with a first through hole, the second shell is provided with a second through hole opposite to the first through hole, the ventilation hole channel is communicated with the first through hole and the second through hole, the moisture absorption layer is used for filtering salt mist in air entering the cavity, and the salt mist prevention power distribution cabinet can effectively block salt mist invasion and improve the heat dissipation effect of the power distribution cabinet at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of salt fog prevention, and in particular to a salt fog prevention power distribution cabinet and a dehumidification method thereof. Background Art

[0002] As an important part of renewable energy, offshore wind power has developed rapidly in recent years. Offshore wind farms are usually located in marine environments, and electrical equipment such as distribution cabinets are exposed to high humidity, high salt, and highly corrosive environments for a long time, especially salt spray corrosion. Salt spray will not only cause the insulation performance of electrical components to deteriorate, but may also cause poor contact, short circuit and other faults, seriously affecting the stable operation of the power system and the life of the equipment.

[0003] In the related art, the sealing performance of the power distribution cabinet shell is increased to reduce the intrusion of salt fog so as to reduce the corrosion of the power distribution cabinet by salt fog. However, the power distribution cabinet is sealed for a long time, resulting in poor heat dissipation effect of the power distribution cabinet. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a salt-fog proof distribution cabinet, which can effectively block the intrusion of salt fog and improve the heat dissipation effect of the distribution cabinet.

[0005] The embodiment of the present invention also provides a dehumidification method for a salt-fog proof distribution cabinet.

[0006] The salt-fog proof distribution cabinet of the embodiment of the present invention comprises: a body, wherein the body has a chamber, the body comprises a first shell and a second shell, the first shell is an insulating shell and is arranged at an interval with the second shell, a side surface of the first shell away from the second shell forms an inner wall surface of the chamber, and a side surface of the second shell away from the first shell forms an outer wall surface of the body; a hygroscopic layer, the hygroscopic layer is filled between the first shell and the second shell, a ventilation channel penetrating the hygroscopic layer along the thickness direction thereof is opened on the hygroscopic layer, a first through hole is provided on the first shell, and a second through hole arranged opposite to the first through hole is provided on the second shell, the ventilation channel is connected with the first through hole and the second through hole respectively, and the hygroscopic layer is used to filter salt mist in the air entering the chamber.

[0007] The salt-fog proof distribution cabinet of the embodiment of the present invention is provided with a first shell and a second shell arranged at intervals, a hygroscopic layer is filled in the gap between the first shell and the second shell, a ventilation channel is opened on the hygroscopic layer and penetrates the hygroscopic layer along its thickness direction, a first through hole opposite to the ventilation channel is provided on the first shell, and a second through hole opposite to the ventilation channel is provided on the second shell, the first through hole and the second through hole are connected through the ventilation channel, so that outside air can enter the chamber through the second through hole, the ventilation channel and the first through hole in turn, and the air in the distribution cabinet can enter the outside through the first through hole, the ventilation channel and the second through hole in turn, so that air circulation between the chamber and the outside is realized, and the salt fog in the air entering the chamber is filtered by the hygroscopic layer, so that the salt fog is effectively blocked from entering the distribution cabinet while improving the heat dissipation effect of the distribution cabinet.

[0008] In some embodiments, the salt spray proof power distribution cabinet further includes a first fan, the first fan is disposed in the chamber, the first fan is arranged adjacent to the ventilation duct, and the first fan is used to accelerate the air flow speed through the ventilation duct.

[0009] In some embodiments, the salt spray proof distribution cabinet further includes a second fan, and at least one vent is provided on the main body, at least one of the vents is connected to the chamber, and the second fan is arranged adjacent to the vent, and the second fan is used to speed up the air flow through the vent.

[0010] In some embodiments, the vent includes an air inlet and an air outlet, the air inlet and the air outlet are arranged opposite to each other, and both the air inlet and the air outlet are connected to the chamber.

[0011] In some embodiments, the salt spray protection distribution cabinet further includes a filter, wherein the filter is disposed at the air inlet and the air outlet, and the filter is used to filter at least part of the salt spray in the air flowing through the filter.

[0012] In some embodiments, the salt spray protection distribution cabinet further includes a humidity sensor, which is disposed in the chamber and is used to monitor the humidity in the chamber in real time.

[0013] In some embodiments, the salt spray proof power distribution cabinet further includes a dehumidification component, at least a portion of which is disposed in the chamber, and the dehumidification component is used to absorb water vapor in the air in the chamber and discharge it out of the chamber.

[0014] In some embodiments, the salt spray protection distribution cabinet also includes a controller, which is respectively connected to the first fan, the second fan, the humidity sensor and the dehumidification component, and the controller is used to receive the humidity data monitored by the humidity sensor and respectively control the working status of the first fan, the second fan and the dehumidification component.

[0015] In some embodiments, there are a plurality of ventilation channels, there are a plurality of first through holes, and the plurality of first through holes are arranged in a one-to-one correspondence with the plurality of ventilation channels.

[0016] The dehumidification method of the salt spray proof distribution cabinet of the embodiment of the present invention includes: using a humidity sensor to monitor the humidity in the chamber in real time and transmit it to a controller; the controller compares a first humidity value monitored by the humidity sensor with a preset humidity value, and when the first humidity value is greater than or equal to the preset humidity value, the controller controls the first fan and the second fan to be turned on at the same time; after the first fan and the second fan run for a first running time, the controller compares the second humidity value monitored by the humidity sensor with the preset humidity value, and when the second humidity value is less than the preset humidity value, turns off the second fan; when the second humidity value is greater than or equal to the preset humidity value, turns on the dehumidification component for dehumidification, until the real-time humidity value in the chamber is less than the preset humidity value, and then turns off the dehumidification component and the second fan.

[0017] The dehumidification method of the salt fog proof distribution cabinet in the embodiment of the present invention monitors the humidity in the chamber in real time by arranging a humidity sensor in the chamber, so that the controller can monitor the humidity in the chamber in real time, and then the controller can adjust the working states of the first fan, the second fan and the dehumidification component according to the real-time humidity value in the chamber, so as to adapt to automatic adjustment under different working conditions. On the one hand, it effectively blocks salt fog from entering the distribution cabinet while improving the heat dissipation effect of the distribution cabinet. On the other hand, it improves the intelligence of the distribution cabinet, reduces manual intervention and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of a salt spray proof distribution cabinet according to an embodiment of the present invention.

[0019] Reference numerals:

[0020] body 1, chamber 11, first shell 12, first through hole 121, second shell 13, second through hole 131, vent 14,

[0021] Moisture absorbing layer 2, ventilation holes 21,

[0022] Filter 3. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0024] The salt-fog-proof power distribution cabinet of the embodiment of the present invention comprises a body 1 and a hygroscopic layer 2. The body 1 has a chamber 11, and the body 1 comprises a first shell 12 and a second shell 13. The first shell 12 is an insulating shell and is arranged at a distance from the second shell 13. The surface of the first shell 12 on one side away from the second shell 13 forms the inner wall surface of the chamber 11, and the surface of the second shell 13 on one side away from the first shell 12 forms the outer wall surface of the body 1. The hygroscopic layer 2 is filled between the first shell 12 and the second shell 13. The hygroscopic layer 2 is provided with a ventilation channel 21 penetrating the hygroscopic layer 2 along its thickness direction. The first shell 12 is provided with a first through hole 121, and the second shell 13 is provided with a second through hole 131 arranged opposite to the first through hole 121. The ventilation channel 21 is connected to the first through hole 121 and the second through hole 131 respectively. The hygroscopic layer 2 is used to filter the salt fog in the air entering the chamber 11.

[0025] Specifically, Figure 1 As shown, the first shell 12 is the inner shell, the second shell 13 is the outer shell, the inner shell and the outer shell are arranged at intervals in the inner and outer directions, a gap is formed between the inner shell and the outer shell, the inner wall surface of the inner shell forms the inner wall surface of the chamber 11, the outer wall surface of the outer shell forms the outer wall surface of the main body 1, the hygroscopic layer 2 is filled in the gap between the inner shell and the outer shell, the inner wall surface of the hygroscopic layer 2 contacts the outer wall surface of the inner shell, and the outer wall surface of the hygroscopic layer 2 contacts the inner wall surface of the outer shell.

[0026] Optionally, the first shell 12 is an insulating shell made of insulating material, and the second shell 13 is made of corrosion-resistant alloy material. Since the outer wall of the second shell 13 is in a salt spray environment, the corrosion resistance of the salt spray proof distribution cabinet is improved by setting the second shell 13 to a corrosion-resistant alloy material.

[0027] Optionally, the moisture absorbing layer 2 is made of a highly efficient moisture absorbing material, such as silica gel or calcium chloride. The moisture absorbing layer 2 can be reused to reduce the dehumidification cost.

[0028] Optionally, the gap between the first shell 12 and the second shell 13 is smaller.

[0029] The salt-fog proof distribution cabinet of the embodiment of the present invention is provided with a first shell 12 and a second shell 13 arranged at intervals, a hygroscopic layer 2 is filled in the gap between the first shell 12 and the second shell 13, a ventilation channel 21 penetrating the hygroscopic layer 2 along the thickness direction thereof is provided on the hygroscopic layer 2, a first through hole 121 opposite to the ventilation channel 21 is provided on the first shell 12, and a second through hole 131 opposite to the ventilation channel 21 is provided on the second shell 13, the first through hole 121 and the second through hole 131 are connected through the ventilation channel 21, so that outside air can enter the chamber 11 through the second through hole 131, the ventilation channel 21 and the first through hole 121 in sequence, and the air in the distribution cabinet can enter the outside through the first through hole 121, the ventilation channel 21 and the second through hole 131 in sequence, so as to realize air circulation between the chamber 11 and the outside, and the salt fog in the air entering the chamber 11 is filtered by the hygroscopic layer 2, so as to effectively prevent the salt fog from entering the distribution cabinet and improve the heat dissipation effect of the distribution cabinet.

[0030] In some embodiments, the salt spray proof power distribution cabinet further includes a first fan (not shown), which is disposed in the chamber 11 and arranged adjacent to the ventilation duct 21 , and is used to accelerate the air flow speed through the ventilation duct 21 .

[0031] The ventilation duct 21 can utilize natural wind pressure to realize air circulation between the chamber 11 and the outside world, or a first fan can be arranged in the chamber 11 to speed up the air circulation speed between the chamber 11 and the outside world. By setting the hygroscopic layer 2, the air exchange inside and outside the chamber 11 can be realized while effectively absorbing and removing salt, thereby improving the reliability of electrical components in the distribution cabinet.

[0032] In some embodiments, the salt spray proof distribution cabinet further includes a second fan (not shown), and at least one vent 14 is further provided on the main body 1, at least one vent 14 is connected to the chamber 11, and the second fan is arranged adjacent to the vent 14, and the second fan is used to speed up the air flow through the vent 14.

[0033] Specifically, Figure 1 As shown, the vent 14 is separated from the ventilation channel 21, the flow cross-sectional area of ​​the vent 14 is larger than the flow cross-sectional area of ​​the ventilation channel 21, the vent 14 connects the inside and outside of the chamber 11, and the second fan is arranged adjacent to the vent 14. By setting the second fan, the flow speed between the air in the chamber 11 and the outside air can be accelerated.

[0034] Optionally, since the size of the ventilation duct 21 is relatively small, the provision of the vent 14 and the second fan in the embodiment of the present invention can accelerate the circulation speed of the air inside and outside the chamber 11, discharge the moisture in the air in the distribution cabinet as soon as possible, improve the adaptability of the distribution cabinet, and meet the dehumidification needs in different situations.

[0035] For example, after the door of the distribution cabinet is opened for maintenance, a large amount of outside air enters the chamber 11, causing the air humidity in the chamber 11 to increase significantly. Removing the moisture in the air in the chamber 11 only through the ventilation duct 21 is not ideal. By setting the vent 14 and the second fan, the dehumidification effect of the distribution cabinet can be improved and moisture removal can be promoted.

[0036] Optionally, the vent 14 may be closed in the initial state, and opened when it is necessary to accelerate the removal of moisture in the chamber 11. Alternatively, the vent 14 is opened in the initial state, and the specific state of the vent 14 is subject to actual adjustment.

[0037] In some embodiments, the vent 14 includes an air inlet and an air outlet, which are arranged relative to each other and are both connected to the chamber 11. By arranging the air inlet and the air outlet relative to each other, the air circulation speed can be increased, thereby improving the heat dissipation effect in the power distribution cabinet.

[0038] In some embodiments, the anti-salt spray distribution cabinet further includes a filter 3 , which is disposed at the air inlet and the air outlet, and is used to filter at least part of the salt spray in the air flowing through the filter 3 .

[0039] Specifically, the filter 3 is arranged at the air inlet and the air outlet, and utilizes the principle that liquid passes through the microporous filter 3 under a certain pressure, solid particles are trapped by the micropores, and the filtered liquid flows out, so that the air can circulate while filtering the salt mist in the air to prevent large particles of salt mist from directly invading.

[0040] Optionally, the filter 3 is a microporous filter 3, which includes a filter element and a shell. The shell is a stainless steel shell, and the filter element is made of a material with a microporous structure such as polyester membrane, ceramic, or metal mesh.

[0041] In some embodiments, the anti-salt spray distribution cabinet further includes a humidity sensor (not shown), which is disposed in the chamber 11 and is used to monitor the humidity in the chamber 11 in real time. By providing the humidity sensor, it is convenient to grasp the humidity condition in the distribution cabinet in real time, and then adjust it in time according to the humidity condition in the distribution cabinet.

[0042] In some embodiments, the salt spray proof distribution cabinet further includes a dehumidification component (not shown), at least part of which is disposed in the chamber 11 , and the dehumidification component is used to absorb water vapor in the air in the chamber 11 and discharge it out of the chamber 11 .

[0043] Specifically, the dehumidification component is installed on the top or side of the power distribution cabinet to facilitate air circulation and moisture discharge. The dehumidification component includes a compressor, a condenser, an evaporator, a capillary tube, a fan, and an air duct housing. The compressor compresses the refrigerant and sends it to the condenser, where the refrigerant releases heat, then passes through the capillary tube throttling, enters the evaporator to absorb moisture in the air, and finally the fan discharges the treated air.

[0044] It is understandable that the dehumidification component in this embodiment adopts the principle of refrigeration dehumidification, and cools and dehumidifies the moisture in the air through the circulation of refrigerant and the flow of air, thereby achieving the effect of reducing the indoor humidity. The structure of the dehumidification component is not specifically limited in this embodiment, and any dehumidification structure that can reduce the air humidity in the power distribution cabinet belongs to the protection scope of this embodiment.

[0045] In some embodiments, the anti-salt spray distribution cabinet further includes a controller, which is respectively connected to the first fan, the second fan, the humidity sensor and the dehumidification component, and is used to receive humidity data monitored by the humidity sensor and respectively control the working states of the first fan, the second fan and the dehumidification component. In this embodiment, the setting of the controller facilitates automatic adjustment of the working states of the first fan, the second fan and the dehumidification component according to the actual humidity conditions in the distribution cabinet, thereby realizing the intelligence of the distribution cabinet.

[0046] In some embodiments, there are multiple ventilation channels 21 and multiple first through holes 121 , and the multiple first through holes 121 are arranged in a one-to-one correspondence with the multiple ventilation channels 21 .

[0047] Specifically, Figure 1 As shown, a plurality of ventilation channels 21 are arranged at intervals on the hygroscopic layer 2, a plurality of first channels are arranged at intervals on the first shell 12, a plurality of second shells 13 are arranged at intervals on the second shell 13, the number of second through holes 131 is the same as the number of first through holes 121, a plurality of first channels, a plurality of second through holes 131 and a plurality of ventilation channels 21 are arranged in one-to-one correspondence to form a plurality of ventilation channels, and the setting of a plurality of ventilation channels is beneficial to improving the heat dissipation effect of the power distribution cabinet.

[0048] The dehumidification method of the anti-salt spray distribution cabinet of the embodiment of the present invention includes: using a humidity sensor to monitor the humidity in the chamber in real time and transmit it to the controller. The controller compares the first humidity value monitored by the humidity sensor with the preset humidity value. When the first humidity value is greater than or equal to the preset humidity value, the controller controls the first fan and the second fan to be turned on at the same time. After the first fan and the second fan run for a first running time, the controller compares the second humidity value monitored by the humidity sensor with the preset humidity value. When the second humidity value is less than the preset humidity value, the second fan is turned off. When the second humidity value is greater than or equal to the preset humidity value, the dehumidification component is turned on for dehumidification.

[0049] When the first humidity value is greater than the preset humidity value, the controller turns on the first fan and the second fan to speed up the exchange speed between the air in the chamber and the outside space, thereby reducing the humidity in the chamber. After the first fan and the second fan have run for the first running time, the second humidity value in the chamber is compared with the preset humidity value. By limiting the minimum running time of the first fan and the second fan, the humidity value in the chamber is reduced enough instead of hovering around the preset humidity value, thereby ensuring the dehumidification effect of the power distribution cabinet and providing support for subsequent dehumidification adjustment.

[0050] After the first fan and the second fan have run for a first running time, when the second humidity value in the chamber is less than the preset humidity value, the second fan is turned off, or the first fan and the second fan are turned off at the same time to keep the normal operation of the power distribution cabinet.

[0051] After the first fan and the second fan have run for the first running time, when the second humidity value in the chamber is still greater than or equal to the preset humidity value, the dehumidification component is turned on to dehumidify the chamber. Since the dehumidification component directly discharges the water vapor in the air in the chamber out of the chamber, the dehumidification effect is obvious. When the real-time humidity value in the chamber is within the preset humidity value range, the dehumidification component and the second fan are turned off. At this time, the first fan may be turned off or not. In other words, the first fan may be kept on to ensure the circulation of air inside and outside the chamber.

[0052] Optionally, the preset humidity value can be specifically determined according to the humidity value in the air at the installation location of the power distribution cabinet, and the first operating time can be specifically determined according to the area of ​​the chamber of the power distribution cabinet.

[0053] The dehumidification method of the salt spray proof distribution cabinet in the embodiment of the present invention monitors the humidity in the chamber in real time by arranging a humidity sensor in the chamber, which facilitates the controller to monitor the humidity in the chamber in real time, and then facilitates the controller to adjust the working states of the first fan, the second fan and the dehumidification component according to the real-time humidity value in the chamber, adapts to automatic adjustment under different working conditions, improves the intelligence of the distribution cabinet, reduces manual intervention, and reduces maintenance costs.

[0054] The dehumidification method of the salt-fog proof distribution cabinet of the embodiment of the present invention adopts the distribution cabinet of the above embodiment, by setting a first shell and a second shell arranged at intervals, a hygroscopic layer is filled in the gap between the first shell and the second shell, a ventilation channel penetrating the hygroscopic layer along the thickness direction is opened on the hygroscopic layer, a first through hole opposite to the ventilation channel is set on the first shell, and a second through hole opposite to the ventilation channel is set on the second shell, the first through hole and the second through hole are connected through the ventilation channel, so that outside air can enter the chamber through the second through hole, the ventilation channel and the first through hole in turn, and the air in the distribution cabinet can enter the outside through the first through hole, the ventilation channel and the second through hole in turn, so as to realize air circulation between the chamber and the outside, and the salt fog in the air entering the chamber is filtered by the hygroscopic layer, so as to effectively block the salt fog from entering the distribution cabinet and improve the heat dissipation effect of the distribution cabinet, so as to realize intelligent dehumidification of the distribution cabinet, and achieve the dual goals of efficient salt fog prevention and good heat dissipation.

[0055] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] It is to be understood that the above embodiments are exemplary and are not to be construed as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A salt spray proof distribution cabinet, characterized in that: include: A body, wherein the body has a chamber, and the body includes a first shell and a second shell, wherein the first shell is an insulating shell and is spaced apart from the second shell, a side surface of the first shell away from the second shell forms an inner wall surface of the chamber, and a side surface of the second shell away from the first shell forms an outer wall surface of the body; A hygroscopic layer is filled between the first shell and the second shell, a ventilation channel is provided on the hygroscopic layer and penetrates the hygroscopic layer along the thickness direction thereof, a first through hole is provided on the first shell, a second through hole is provided on the second shell and is arranged opposite to the first through hole, the ventilation channel is connected with the first through hole and the second through hole respectively, and the hygroscopic layer is used to filter the salt mist in the air entering the chamber.

2. The salt spray proof distribution cabinet according to claim 1, characterized in that: It also includes a first fan, which is disposed in the chamber and is arranged adjacent to the ventilation hole. The first fan is used to speed up the air flow through the ventilation hole.

3. The salt spray proof distribution cabinet according to claim 2, characterized in that: It also includes a second fan. The main body is also provided with at least one vent, at least one of the vents is connected to the chamber, and the second fan is arranged adjacent to the vent. The second fan is used to speed up the air flow through the vent.

4. The salt spray proof distribution cabinet according to claim 3, characterized in that: The vent includes an air inlet and an air outlet, the air inlet and the air outlet are arranged opposite to each other, and both the air inlet and the air outlet are connected to the chamber.

5. The salt spray proof distribution cabinet according to claim 4, characterized in that: It also includes a filter, which is arranged at the air inlet and the air outlet, and is used to filter at least part of the salt mist in the air flowing through the filter.

6. The salt spray proof distribution cabinet according to claim 4, characterized in that: It also includes a humidity sensor, which is arranged in the chamber and is used to monitor the humidity in the chamber in real time.

7. The salt spray proof distribution cabinet according to claim 6, characterized in that: It also includes a dehumidification component, at least part of which is arranged in the chamber, and the dehumidification component is used to absorb water vapor in the air in the chamber and discharge it out of the chamber.

8. The salt spray proof distribution cabinet according to claim 7, characterized in that: It also includes a controller, which is respectively connected to the first fan, the second fan, the humidity sensor and the dehumidification component. The controller is used to receive humidity data monitored by the humidity sensor and respectively control the working states of the first fan, the second fan and the dehumidification component.

9. The salt spray proof distribution cabinet according to claim 1, characterized in that: There are a plurality of ventilation channels, and there are a plurality of first through holes, and the plurality of first through holes are arranged in one-to-one correspondence with the plurality of ventilation channels.

10. A dehumidification method for a salt-fog proof distribution cabinet, using the salt-fog proof distribution cabinet according to any one of claims 1 to 9, characterized in that: include: The humidity in the chamber is monitored in real time using a humidity sensor and transmitted to the controller; The controller compares a first humidity value monitored by the humidity sensor with a preset humidity value, and when the first humidity value is greater than or equal to the preset humidity value, the controller controls the first fan and the second fan to be turned on simultaneously; After the first fan and the second fan run for a first running time, the controller compares a second humidity value monitored by the humidity sensor with the preset humidity value, and turns off the second fan when the second humidity value is less than the preset humidity value; When the second humidity value is greater than or equal to the preset humidity value, the dehumidification component is turned on for dehumidification, and when the real-time humidity value in the chamber is less than the preset humidity value, the dehumidification component and the second fan are turned off.

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