阅读说明：本技术 一种电气柜防凝露装置 (Anti-condensation device for electrical cabinet ) 是由 税伟 于 2020-07-09 设计创作，主要内容包括：本发明公开了一种电气柜防凝露装置,包括控制单元和至少一个温湿度调节模组,温湿度调节模组包括依次密封连接的排气管路、湿度调节管路、温度调节管路和送气管路和温度调节单元、湿度调节单元、送气单元、排气单元、温湿度检测单元；温湿度检测单元检测湿度调节管路入口处的入风湿度和入风温度、检测温度调节管路出口处的出风温度和出风湿度、检测周围的环境温度和环境湿度；控制单元根据入风湿度控制湿度调节单元对所流过空气的湿度进行调节,直至出风湿度达到目标湿度,以及根据入风温度控制温度调节单元对所流过空气的温度进行调节,直至出风温度达到目标温度。本发明能够在无需挤占电气柜空间的条件下防凝露、防尘(防虫)和防高温。(The invention discloses an electrical cabinet anti-condensation device which comprises a control unit and at least one temperature and humidity adjusting module, wherein the temperature and humidity adjusting module comprises an exhaust pipeline, a humidity adjusting pipeline, a temperature adjusting pipeline, an air feeding pipeline, a temperature adjusting unit, a humidity adjusting unit, an air feeding unit, an exhaust unit and a temperature and humidity detection unit which are sequentially and hermetically connected; the temperature and humidity detection unit detects the air inlet humidity and the air inlet temperature at the inlet of the humidity adjusting pipeline, detects the air outlet temperature and the air outlet humidity at the outlet of the temperature adjusting pipeline, and detects the ambient temperature and the ambient humidity; the control unit controls the humidity adjusting unit to adjust the humidity of the flowing air according to the inlet air humidity until the outlet air humidity reaches the target humidity, and controls the temperature adjusting unit to adjust the temperature of the flowing air according to the inlet air temperature until the outlet air temperature reaches the target temperature. The invention can prevent condensation, dust (insect) and high temperature without occupying the space of the electrical cabinet.)

1. The electrical cabinet condensation preventing device is characterized by comprising a control unit and at least one temperature and humidity adjusting module, wherein the temperature and humidity adjusting module comprises an air supply pipeline, an air exhaust pipeline, a temperature adjusting pipeline, a humidity adjusting pipeline, a temperature adjusting unit, a humidity adjusting unit, an air supply unit, an air exhaust unit and a temperature and humidity detection unit, the air exhaust pipeline, the humidity adjusting pipeline, the temperature adjusting pipeline and the air supply pipeline are sequentially connected in a sealing manner, the air exhaust pipeline is connected with an air outlet of an electrical cabinet, and the air supply pipeline is connected with an air inlet of the electrical cabinet;

The air exhaust unit is used for guiding air in the electric cabinet into the humidity adjusting pipeline through an air exhaust pipeline, and the air supply unit is used for guiding air in the temperature adjusting pipeline into the electric cabinet through an air supply pipeline;

the temperature and humidity detection unit is used for detecting the air inlet humidity and the air inlet temperature at the inlet of the humidity adjusting pipeline, detecting the air outlet temperature and the air outlet humidity at the outlet of the temperature adjusting pipeline, and detecting the ambient temperature and the ambient humidity;

the humidity adjusting unit is positioned in the humidity adjusting pipeline;

the temperature adjusting unit is positioned in the temperature adjusting pipeline;

the control unit is used for setting a target temperature and a target humidity according to the ambient temperature and the ambient humidity, controlling the humidity adjusting unit to adjust the humidity of the flowing air according to the inlet air humidity until the outlet air humidity reaches the target humidity, and controlling the temperature adjusting unit to adjust the temperature of the flowing air according to the inlet air temperature until the outlet air temperature reaches the target temperature, wherein the target humidity is lower than the ambient humidity, and the target temperature is lower than the ambient temperature.

2. The electrical cabinet condensation preventing device according to claim 1, wherein the control unit is further configured to determine whether the outlet humidity exceeds the inlet humidity or the outlet temperature exceeds the inlet temperature after a preset delay time, and generate an alarm signal when the outlet humidity exceeds the inlet humidity or the outlet temperature exceeds the inlet temperature.

3. The electrical cabinet condensation preventing device according to claim 2, further comprising an alarm unit, wherein the alarm unit is a buzzer or an indicator light;

the alarm unit is used for giving an alarm according to the alarm signal.

4. The electrical cabinet condensation preventing device according to claim 3, wherein the control unit is further configured to record an alarm log when the alarm signal is generated.

5. The electrical cabinet condensation preventing device according to claim 1, wherein the control unit is further configured to control the air supply unit and the air exhaust unit to operate simultaneously, and control an amount of air that is guided out of the electrical cabinet by the air exhaust unit to be consistent with an amount of air that is fed into the electrical cabinet by the air supply unit, so as to maintain a substantially consistent air pressure inside and outside the electrical cabinet and prevent dust from entering the electrical cabinet.

6. The electrical cabinet condensation preventing device according to claim 5, wherein the air supply unit and the air exhaust unit are both fans.

7. The electrical cabinet anti-condensation device according to claim 1, wherein the humidity adjustment unit comprises a first semiconductor refrigeration sheet, a first radiator and a condensed water drain pipe, the first radiator is stacked on the first semiconductor refrigeration sheet, one end of the condensed water drain pipe is connected with the first radiator, the other end of the condensed water drain pipe penetrates through the bottom of the humidity adjustment pipeline and extends out of the humidity adjustment pipeline, and the humidity adjustment pipeline is sealed at the penetration position;

The control unit is specifically used for controlling the first semiconductor refrigeration sheet to refrigerate the air flowing through the first radiator according to the air inlet humidity, so that the air flowing through is condensed into water on the first radiator and is discharged along the condensed water drain pipe.

8. The electrical cabinet condensation preventing apparatus of claim 7, wherein the temperature adjustment unit comprises a second semiconductor cooling fin;

the control unit is specifically used for controlling the second semiconductor refrigerating sheet to refrigerate or heat air flowing through according to the air inlet temperature until the air outlet temperature reaches the target temperature.

9. The electrical cabinet condensation preventing device according to claim 8, wherein the temperature adjusting unit further comprises a second heat sink, the second heat sink is stacked on a second semiconductor cooling fin, and the second semiconductor cooling fin cools or heats air flowing through the second heat sink to increase a contact area with the air.

10. The electrical cabinet condensation preventing apparatus of claim 1, wherein the target temperature is 3-5 degrees below ambient temperature.

Technical Field

The invention relates to the technical field of electricity, in particular to an anti-condensation device for an electrical cabinet.

Background

In recent years, the electrical cabinet condensation problem has come to be emphasized by each large power unit. Condensation is simply called condensation dew, which is a special phenomenon occurring when the humidity in the air is high, and when the water vapor in the air reaches the saturation level, the condensation dew condenses on an object with relatively low temperature, and forms small water drops. A typical example is a layer of dew on leaves or grass in the morning of autumn, which is a condensation phenomenon. In the southern area of China, water resources are rich, so that the condensation phenomenon is easy to occur in rainy days in autumn and winter. The harm of the condensation to the electrical cabinet is mainly to cause corrosion or form short circuit easily, and the common harm is:

1. the switch cabinet adopts a fully-closed structure, the air chambers are mutually independent, the outgoing line is a cable outgoing line, moisture in the cable trench rises to enter the electrical cabinet and accumulates in the cabinet, and in addition, the ventilation in the cabinet is not smooth, and when the environmental humidity changes, condensation is easily generated, so that the insulation strength is reduced. Because a large amount of insulating parts made of die-casting epoxy resin, in particular composite insulating materials such as an outer insulating layer of a high-voltage cable, an epoxy pouring current transformer, a novolac epoxy insulating cover and a phase partition plate, have poor hydrophobicity, if the insulating materials are poor in quality, air humidity is high and pollution is serious, and moisture absorption and condensation can be caused in operation, so that surface leakage current is increased. When the medium is affected with damp, dirt or damaged, free electrons on the surface of the medium are increased due to the damp, so that the conduction current is increased, the insulation resistance is correspondingly reduced, and partial creeping discharge flashover is caused when the insulation is reduced to a certain degree.

2. Dew that forms on switch or switch operating device can corrode the metal parts in the mechanism, influences the life of mechanism, causes the mechanism card puckery because of the corrosion even, leads to switch or switch to construct and can not move in place when deciliter, if consequently make switch sound contact divide slowly and close slowly, then can cause very big electric power accident, especially the switch corrosion phenomenon can be more serious when not operating for a long time.

3. Dew formed on a secondary wiring terminal row in a terminal box or a mechanism box corrodes a metal conductive part on the terminal row, alternating current and direct current short circuit grounding is easily caused after the metal conductive part is corroded seriously or other impurities such as dust are mixed in the metal conductive part, direct current grounding causes great harm to stable operation of a secondary system of a transformer substation, practical operation experience shows that direct current grounding is mostly caused by water attached to a charged part, the dew even causes short circuit between two secondary wires on the terminal row more seriously, and if the dew happens to be a switch tripping loop, switch misoperation can be immediately caused, and power failure accidents are caused.

4. The high-voltage chamber generally pays more attention to ventilation so that the indoor temperature and humidity are greatly influenced by the outdoor environment, condensation is easily generated in the indoor high-voltage switch cabinet, the waterproof performance of an insulating porcelain bottle in the cabinet is not considered, the insulativity of the insulating porcelain bottle can be reduced if dew exists on the insulating porcelain bottle, the creepage or flashover phenomenon can be caused even, the normal operation of equipment is seriously influenced, particularly, some equipment is in a shutdown state, the internal temperature of the equipment is lower, condensation is more easily formed on the surface of the equipment, and at the moment, accidents are very easily caused once the power is transmitted.

Currently, the anti-condensation measure adopted in the industry is to add heating equipment or dehumidifying equipment or spray a dehumidifying agent in an electrical cabinet. However, most electrical cabinets have limited volume and do not have additional installation space, and heating equipment or dehumidification equipment is installed in the electrical cabinets, so that special power supply lines need to be introduced into the cabinets, and additional electrical risks are increased to some extent; and the anti-condensation effect of additionally installing heating equipment or spraying a desiccant in the electrical cabinet is not ideal, but the heating equipment can increase the internal temperature of the electrical cabinet. Therefore, the existing anti-condensation treatment mode can not meet the anti-condensation requirement.

Disclosure of Invention

The invention aims to provide an electrical cabinet condensation-proof device which can prevent condensation, dust (insect) and high temperature under the condition of not occupying the space of the electrical cabinet.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a condensation device is prevented to regulator cubicle, includes the control unit and at least one temperature humidity control module, the temperature humidity control module includes air feed pipe, exhaust pipe, temperature regulation pipeline, humidity control pipeline, temperature regulation unit, humidity control unit, air feed unit, exhaust unit and temperature and humidity detection unit, exhaust pipe, humidity control pipeline, temperature regulation pipeline and air feed pipe seal connection in proper order, the exhaust pipe is connected the air outlet of regulator cubicle, the air feed pipe is connected the air intake of regulator cubicle; the air exhaust unit is used for guiding air in the electric cabinet into the humidity adjusting pipeline through an air exhaust pipeline, and the air supply unit is used for guiding air in the temperature adjusting pipeline into the electric cabinet through an air supply pipeline; the temperature and humidity detection unit is used for detecting the air inlet humidity and the air inlet temperature at the inlet of the humidity adjusting pipeline, detecting the air outlet temperature and the air outlet humidity at the outlet of the temperature adjusting pipeline, and detecting the ambient temperature and the ambient humidity; the humidity adjusting unit is positioned in the humidity adjusting pipeline; the temperature adjusting unit is positioned in the temperature adjusting pipeline; the control unit is used for setting a target temperature and a target humidity according to the ambient temperature and the ambient humidity, controlling the humidity adjusting unit to adjust the humidity of the flowing air according to the inlet air humidity until the outlet air humidity reaches the target humidity, and controlling the temperature adjusting unit to adjust the temperature of the flowing air according to the inlet air temperature until the outlet air temperature reaches the target temperature, wherein the target humidity is lower than the ambient humidity, and the target temperature is lower than the ambient temperature.

Preferably, the control unit is further configured to determine whether the outlet humidity exceeds the inlet humidity or the outlet temperature exceeds the inlet temperature after delaying the preset time, and generate an alarm signal when the outlet humidity exceeds the inlet humidity or the outlet temperature exceeds the inlet temperature.

Preferably, the electrical cabinet anti-condensation device further comprises an alarm unit, wherein the alarm unit is a buzzer or an indicator light; the alarm unit is used for giving an alarm according to the alarm signal.

Preferably, the control unit is further configured to record an alarm log when the alarm signal is generated.

Preferably, the control unit is further configured to control the air supply unit and the exhaust unit to operate simultaneously, and control an amount of air that is led out from the electrical cabinet by the exhaust unit to be consistent with an amount of air that is fed into the electrical cabinet by the air supply unit, so as to maintain a substantially consistent air pressure inside and outside the electrical cabinet, and prevent dust from entering the electrical cabinet.

Preferably, the air supply unit and the air exhaust unit are both fans.

Preferably, the humidity adjusting unit comprises a first semiconductor refrigerating sheet, a first radiator and a condensed water drain pipe, the first radiator is overlapped on the first semiconductor refrigerating sheet, one end of the condensed water drain pipe is connected with the first radiator, the other end of the condensed water drain pipe penetrates through the bottom of the humidity adjusting pipeline and extends out of the humidity adjusting pipeline, and the humidity adjusting pipeline is sealed at the penetrating position;

The control unit is specifically used for controlling the first semiconductor refrigeration sheet to refrigerate the air flowing through the first radiator according to the air inlet humidity, so that the air flowing through is condensed into water on the first radiator and is discharged along the condensed water drain pipe.

Preferably, the temperature adjusting unit comprises a second semiconductor refrigeration piece;

the control unit is specifically used for controlling the second semiconductor refrigerating sheet to refrigerate or heat air flowing through according to the air inlet temperature until the air outlet temperature reaches the target temperature.

Preferably, the temperature adjusting unit further includes a second radiator, the second radiator is stacked on the second semiconductor cooling plate, and the second semiconductor cooling plate cools or heats the air flowing through the second radiator to increase a contact area with the air.

Preferably, the target temperature is 3 to 5 degrees lower than the ambient temperature.

Different from the prior art, the invention has the beneficial effects that:

1. the device is not influenced by the size of the installation space and is suitable for electrical cabinets of any size;

2. a totally-enclosed gas circuit can be formed by utilizing the vent holes of the existing electrical cabinet, so that dust is prevented from entering;

3. the temperature can be reduced to a certain extent while preventing condensation, and high-temperature aging or abnormality of the electrical element equipment is prevented;

4. The number of the temperature and humidity adjusting modules can be selected according to the size and the number of the electrical cabinets;

5. the electric cabinet is more suitable for being installed outside the electric cabinet, does not occupy the inner space of the electric cabinet, and does not influence the normal operation of electric elements in the electric cabinet.

Drawings

Fig. 1 is a schematic block diagram of an electrical cabinet condensation preventing device according to an embodiment of the invention.

Fig. 2 is a schematic view of the structure of the humidity adjusting unit.

Fig. 3 is a schematic structural view of the temperature adjusting unit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic block diagram of an electrical cabinet condensation preventing device according to an embodiment of the present invention. The electrical cabinet condensation preventing device of the embodiment includes a control unit 10 and at least one temperature and humidity adjusting module 20, and the temperature and humidity adjusting module 20 includes an air supply pipeline 21, an exhaust pipeline 22, a temperature adjusting pipeline 23, a humidity adjusting pipeline 24, a temperature adjusting unit 25, a humidity adjusting unit 26, an air supply unit 27, an exhaust unit 28, and a temperature and humidity detecting unit (not shown). The exhaust pipeline 22, the humidity adjusting pipeline 24, the temperature adjusting pipeline 23 and the air supply pipeline 21 are sequentially connected in a sealing manner, the exhaust pipeline 22 is connected with an air outlet of the electrical cabinet 100, and the air supply pipeline 21 is connected with an air inlet of the electrical cabinet 100. If the electrical cabinet 100 has heat dissipation holes or vent holes, the heat dissipation holes or vent holes of the electrical cabinet 100 may be used as air outlets and air inlets, if the electrical cabinet 100 is fully sealed, the air outlets and air inlets need to be opened on the electrical cabinet 100, and after the exhaust pipeline 22 and the air supply pipeline 21 are connected to the electrical cabinet 100, the exhaust pipeline 22, the humidity adjusting pipeline 24, the temperature adjusting pipeline 23 and the air supply pipeline 21 form fully sealed air paths.

The exhaust unit 28 is used to introduce air in the electrical cabinet 100 into the humidity control line 24 through the exhaust line 22, and the air supply unit 27 is used to introduce air in the temperature control line 23 into the electrical cabinet 100 through the air supply line 21. Air can be circulated in the fully closed air path by the air supply unit 27 and the air discharge unit 28.

The temperature and humidity detection unit is used for detecting the air inlet humidity and the air inlet temperature at the inlet of the humidity adjusting pipeline 24, detecting the air outlet temperature and the air outlet humidity at the outlet of the temperature adjusting pipeline 23 and detecting the ambient temperature and the ambient humidity around the temperature adjusting pipeline. The temperature and humidity detection unit may be composed of temperature and humidity sensors, and the temperature and humidity sensors are respectively disposed at the inlet of the humidity adjusting pipeline 24, the outlet of the temperature adjusting pipeline 23, and the external environment.

A humidity conditioning unit 26 is located within the humidity conditioning circuit 24.

The temperature adjusting unit 25 is located in the temperature adjusting line 23.

The control unit 10 is configured to set a target temperature and a target humidity according to an ambient temperature and an ambient humidity, control the humidity adjusting unit 26 according to an inlet humidity to adjust the humidity of the air flowing through until the outlet humidity reaches the target humidity, and control the temperature adjusting unit 25 according to the inlet temperature to adjust the temperature of the air flowing through until the outlet temperature reaches the target temperature, wherein the target humidity is lower than the ambient humidity, and the target temperature is lower than the ambient temperature. In this embodiment, the target temperature is 3-5 degrees below ambient temperature.

The temperature adjusting unit 25 and the humidity adjusting unit 26 may adjust the outlet air temperature and the inlet air humidity in various forms. In the present embodiment, as shown in fig. 2, the humidity adjusting unit 26 includes a first semiconductor cooling sheet 261, a first radiator 262 and a condensed water drain 263, the first radiator 262 is stacked on the first semiconductor cooling sheet 261, one end of the condensed water drain 263 is connected to the first radiator 262, the other end of the condensed water drain 263 penetrates the bottom of the humidity adjusting pipeline 24 and extends out of the humidity adjusting pipeline 24, and the humidity adjusting pipeline 24 is sealed at the penetration position; the control unit 10 is specifically configured to control the first semiconductor cooling sheet 261 to cool the air flowing through the first radiator 262 according to the incoming air humidity, so that the air flowing through is condensed into water on the first radiator 262 and discharged along the condensed water drain 263. The working principle of the semiconductor refrigerating sheet is that the refrigeration or heating is realized by changing the polarity of the direct current flowing through the semiconductor refrigerating sheet, and the refrigeration efficiency or the heating efficiency can be adjusted by changing the current. The control unit 10 may change the magnitude of the current applied to the first semiconductor cooling sheet 261 according to the incoming air humidity, the larger the incoming air humidity is, the larger the current is, the temperature of the first radiator 262 is reduced after the first semiconductor cooling sheet 261 cools, and then the air with high humidity is condensed into water on the first radiator 262 and discharged along the condensed water drain pipe 263, so as to achieve the purpose of reducing the air humidity. After the condensed water drain pipe 263 is filled with water, air can be isolated from entering, so that the closure of the air path is ensured.

As shown in fig. 3, the temperature adjusting unit 25 includes a second semiconductor cooling plate 251, and the control unit 10 is specifically configured to control the second semiconductor cooling plate 251 to cool or heat the air flowing through according to the inlet air temperature until the outlet air temperature reaches the target temperature. The control unit 10 may change polarity and magnitude of current applied to the second semiconductor chilling plates 251 according to the temperature of the inlet air, if the temperature of the inlet air is too high, the current with a predetermined polarity is applied to the second semiconductor chilling plates 251 to chill the air, and if the temperature of the inlet air is higher, the current is higher, and the temperature of the inlet air is too low, the current with a polarity opposite to the predetermined polarity is applied to the second semiconductor chilling plates 251 to heat the air, and if the temperature of the inlet air is lower, the current is higher, until the temperature of the outlet air reaches a target temperature.

Further, the temperature adjustment unit 25 further includes a second heat sink 252, the second heat sink 252 is stacked on the second semiconductor cooling sheet 251, and the second semiconductor cooling sheet 251 cools or heats the air flowing through the second heat sink 252 to increase a contact area with the air.

If the temperature adjusting unit 25 and the humidity adjusting unit 26 work well, the inlet air humidity reaches the target humidity after a certain time, and the outlet air temperature reaches the target temperature. If the temperature adjusting unit 25 or the humidity adjusting unit 26 malfunctions, the inlet air humidity does not reach the target humidity all the time, and the outlet air temperature does not reach the target temperature. In order to detect the working states of the temperature adjusting unit 25 and the humidity adjusting unit 26 in time, in this embodiment, the control unit 10 is further configured to determine whether the outlet humidity exceeds the inlet humidity or the outlet temperature exceeds the inlet temperature after delaying a preset time, and generate an alarm signal when the outlet humidity exceeds the inlet humidity or the outlet temperature exceeds the inlet temperature. The preset time can be determined according to the actual conditions such as the size of the electrical cabinet 100, the power of the temperature adjusting unit 25 and the humidity adjusting unit 26, and the like. If the outlet air humidity exceeds the inlet air humidity, the outlet air humidity is greater than or equal to the inlet air humidity, and the outlet air temperature exceeds the inlet air temperature, the outlet air humidity exceeds the inlet air humidity or the outlet air temperature exceeds the inlet air temperature after the preset time, it indicates that the humidity adjusting unit 26 or the temperature adjusting unit 25 is in failure or damaged. Further, in order to prompt a fault, the electrical cabinet condensation preventing device further comprises an alarm unit 30, and the alarm unit 30 is used for giving an alarm according to an alarm signal. The alarm unit 30 is, for example, a buzzer, an indicator lamp, or the like. Meanwhile, the control unit 10 is also used for recording an alarm log when generating an alarm signal, so that later inquiry is facilitated.

In this embodiment, the control unit 10 is further configured to control the air supply unit 27 and the air exhaust unit 28 to operate simultaneously, and control the amount of air that is guided out from the electrical cabinet 100 by the air exhaust unit 28 and the amount of air that is fed into the electrical cabinet 100 by the air supply unit 27 to be consistent, so as to maintain the air pressure inside and outside the electrical cabinet 100 to be substantially consistent, and prevent dust or insects from entering the electrical cabinet 100. The air supply unit 27 and the air discharge unit 28 may be fans or the like. If the electrical cabinet 100 is not a fully-enclosed structure, there are other apertures besides the air inlet and the air outlet, such as a threading hole, a heat dissipation hole, etc., if the air supply unit 27 and the air exhaust unit 28 do not operate simultaneously, external dust or cold and hot air may enter the electrical cabinet 100 under the action of air pressure difference, and the control unit 10 only needs to control the ventilation speeds of the fans of the two units to be consistent to ensure that the air volumes introduced and discharged by the electrical cabinet 100 are consistent. Because the air supply and the air exhaust are performed simultaneously, the air pressures inside and outside the electrical cabinet 100 can be kept basically consistent, so that external dust, insects, cold air and hot air cannot enter the electrical cabinet 100 under the action of the air pressure difference.

The number of the temperature and humidity control modules 20 in this embodiment can be determined according to the size of the electrical cabinet 100, for example, one temperature and humidity control module 20 can be used for a small electrical cabinet 100, and two temperature and humidity control modules 20 can be used for a large electrical cabinet 100. The regulator cubicle 100 that the volume exceeds 1 cubic meter more than, the anti-condensation effect that uses two temperature humidity control module 20 is better, because the internal environment of the regulator cubicle 100 of bulky can further be subdivided into upper portion and lower part, because hot-air up walks, the cold air down walks, and the moisture that upper portion or lower wire casing introduced, so need two temperature humidity control module 20 to prevent the condensation respectively and handle upper portion and lower part space. The number of the temperature and humidity adjusting modules 20 can also be determined according to the number of the electrical cabinets 100, and the number of the temperature and humidity adjusting modules 20 is increased correspondingly as the number of the electrical cabinets 100 is increased.

Through the mode, the electrical cabinet condensation preventing device provided by the embodiment of the invention is provided with the fully-closed air passage to adjust the temperature in the electrical cabinet, and finally achieves the condensation preventing purpose.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.