CN203871705U - Switch cabinet anti-condensation and dehumidifying device - Google Patents

Abstract

The utility model discloses an anti-condensation dehumidification device for a switchgear, which includes a housing. The dehumidification device includes a sensor installed in the switchgear. The sensor is electrically connected with a relay in the housing. The power supply supplies power to the dehumidification device through the relay; The dehumidification device also includes an air duct, the two ends of the air duct extend out of the housing, and one end is provided with an air intake fan, and the other end is provided with an air outlet fan, and the air intake fan and the air outlet fan are installed at the corresponding holes in the switch cabinet; A section of the pipe passes through the dew chamber, and after being cooled by the semiconductor cooling chip installed in the dew chamber, the condensed water is discharged through the drain pipe connected to the air pipe. The dehumidification device disclosed by the utility model, if the sensor detects that the humidity in the switch cabinet exceeds the set value, triggers the air in the switch cabinet to circulate through the air duct, and condenses and dehumidifies in the process, thereby reducing the air humidity in the switch cabinet Effect.

Description

A switch cabinet anti-condensation dehumidification device

technical field

The utility model relates to a humidity control device, in particular to an anti-condensation dehumidification device for a switch cabinet.

Background technique

With the rapid development of power grid construction, all kinds of electrical equipment are increasing continuously. Various electrical control components are installed in various cabinet equipment. The normal operation and service life of these components are closely related to the surrounding air humidity. If the humidity is too high , Electrical equipment is prone to damp and rust, mildew, and corrosion will affect the normal operation of the equipment and reduce the reliability of the operation. Therefore, higher requirements are put forward for the moisture-proof and anti-condensation in the switch cabinet.

In the prior art, active heaters have been used to prevent condensation for more than ten years. This kind of heater has played an active role in resisting humidity and preventing condensation to ensure the reliable operation of high-voltage equipment. However, due to regional differences and temperature differences inside and outside the cabinet, the heater There are also some problems in the use of the switchgear. The humidity inside the switchgear is high, and condensation occurs locally, which brings disadvantages to the safe operation of the switchgear. At the same time, the construction time of the existing substation is long, and there are certain defects in the early design structure, which does not take into account the comprehensive operating environment of the switchgear and the hidden dangers of the equipment, resulting in condensation and discharge in the switchgear.

Utility model content

The technical problem to be solved by the utility model is to provide an anti-condensation dehumidification device for a switch cabinet.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An anti-condensation dehumidification device for a switch cabinet, which includes a housing. The improvement is that the dehumidification device includes a sensor installed in the switch cabinet, the sensor is electrically connected to a relay in the housing, and the power supply supplies power to the dehumidification device through the relay; The dehumidification device also includes an air duct. Both ends of the air duct extend out of the casing, and an air intake fan is provided at one end, and an air outlet fan is provided at the other end, and the air intake fan and the air outlet fan are installed at corresponding holes in the switch cabinet; A section of the air duct passes through the condensation chamber, and after being cooled by the semiconductor refrigeration sheet installed in the condensation chamber, the condensed water is discharged through the drain pipe connected to the air pipe.

Further, the power supply is a DC power supply or an AC power supply.

Further, the protection level of the air inlet fan and the air outlet fan is IP54.

Further, a permeable film is provided in a certain section of the air pipe in the condensation chamber, and the drain pipe is connected to the air pipe through the water permeable film.

Further, the dehumidification device further includes a communication module, which is electrically connected to the sensor.

Further, the sensor is a temperature sensor and/or a humidity sensor.

The beneficial effects of the utility model are:

In the switch cabinet anti-condensation dehumidification device disclosed by the utility model, if the sensor detects that the humidity in the switch cabinet exceeds the set value, the trigger relay is closed to make each component in the dehumidification device energized, and the intake fan and the outlet fan start to rotate, so that The air in the switchgear circulates through the air duct. During this process, after the semiconductor refrigeration sheet in the condensation chamber is condensed and dehumidified, the condensed water is discharged from the drain pipe, thereby reducing the air humidity in the switchgear.

The active heater is replaced by a semiconductor cooling chip, and the effect of reducing the air humidity in the switch cabinet is achieved by condensation without increasing the temperature in the switch cabinet, and the dehumidification effect is remarkable.

The drain pipe is connected to the air duct through a permeable membrane, which can improve the sealing performance of the air duct, so that the air in the switch cabinet can circulate in a relatively closed environment, further stabilizing the dehumidification effect.

Description of drawings

Fig. 1 is a schematic structural view of the anti-condensation dehumidification device for a switch cabinet disclosed in Embodiment 1 of the utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Embodiment 1, as shown in Figure 1, this embodiment discloses a switch cabinet anti-condensation dehumidification device, including a housing 1, the improvement is that: the dehumidification device includes a sensor 2 installed in the switch cabinet, the The sensor is electrically connected to the relay 3 in the housing, and the power supply supplies power to the dehumidification device through the relay; the dehumidification device also includes an air duct 4, the two ends of the air duct extend out of the housing, and an air intake fan 5 is provided at one end, and an air outlet fan is provided at the other end 6. The air intake fan and air outlet fan are installed in the corresponding holes of the switch cabinet; a section of the air duct passes through the condensation chamber 7, and after being cooled by the semiconductor cooling plate 8 installed in the condensation chamber, the condensed water is connected to To the drain pipe 9 of the air duct to discharge. Wherein, the power supply is a DC power supply or an AC power supply. Wherein, the protection level of the air intake fan and the air outlet fan is IP54. Wherein, the air duct is provided with a water-permeable membrane 10 in a certain section of the condensation chamber, and the drain pipe is connected with the air duct through the water-permeable membrane. Wherein, the dehumidification device further includes a communication module 11, which is electrically connected to the sensor. Wherein, the sensor is a temperature sensor and a humidity sensor, wherein the temperature measurement range of the sensor is: -55°C-125°C, with an error of 0.5°C; the humidity measurement range is: 0-99%RH, with an error of 3%.

Specifically, the working process of the dehumidification device disclosed in this embodiment is: install the sensor in the switch cabinet, and open holes on the surface of the switch cabinet. The number of holes is two large, and the size corresponds to the size of the fan; The intake fan and the exhaust fan are installed on the corresponding holes. If the sensor detects that the temperature or humidity in the switch cabinet exceeds the set value, the trigger relay is closed to energize the components in the dehumidification device, the intake fan rotates to suck the air in the switch cabinet into the air duct, and the outlet fan rotates to draw the air in the It is discharged into the switch cabinet, so that the gas in the switch cabinet circulates through the air pipe. During this process, the water vapor in the air flowing through a certain section of the air pipe that is in contact with the cold end of the semiconductor refrigeration chip is condensed when it is cold, and the condensed water is drained from the drain. drained from the tube. The temperature and humidity information in the switch cabinet detected by the sensor is sent to the remote receiver in real time through the communication module to achieve the purpose of remote monitoring.

In the switch cabinet anti-condensation dehumidification device disclosed in this embodiment, if the sensor detects that the humidity in the switch cabinet exceeds the set value, the trigger relay will be closed to power up the components in the dehumidification device, and the intake fan and the outlet fan will start to rotate, so that The air in the switchgear circulates through the air duct. During this process, after the semiconductor refrigeration sheet in the condensation chamber is condensed and dehumidified, the condensed water is discharged from the drain pipe, thereby reducing the air humidity in the switchgear.

The active heater is replaced by a semiconductor cooling chip, and the effect of reducing the air humidity in the switch cabinet is achieved by condensation without increasing the temperature in the switch cabinet, and the dehumidification effect is remarkable.

The drain pipe is connected to the air duct through a permeable membrane, which can improve the sealing performance of the air duct, so that the air in the switch cabinet can circulate in a relatively closed environment, further stabilizing the dehumidification effect.

Claims (6)

1. the anti-condensation dehydrating unit of switch cubicle, comprises housing, it is characterized in that: this dehydrating unit comprises the transducer being installed in switch cubicle, and this transducer is electrically connected to the relay in housing, and power supply is that dehydrating unit is powered by relay; This dehydrating unit also comprises airduct, and stretch out outside housing at the two ends of airduct, and one end arranges supply fan, the other end setting fan of giving vent to anger, and described supply fan and the fan of giving vent to anger are mounted to the corresponding hole place of switch cubicle; One section of airduct is passed condensation chamber, and after being installed on the semiconductor chilling plate refrigeration of condensation chamber, condensed water is discharged through being connected to the drainage pipe of airduct.

2. the anti-condensation dehydrating unit of switch cubicle according to claim 1, is characterized in that: described power supply is DC power supply or AC power.

3. the anti-condensation dehydrating unit of switch cubicle according to claim 2, is characterized in that: the degree of protection of described supply fan and the fan of giving vent to anger is IP54.

4. the anti-condensation dehydrating unit of switch cubicle according to claim 3, is characterized in that: airduct certain section in condensation chamber arranges water permeable membrane, and drainage pipe is connected with airduct through water permeable membrane.

5. the anti-condensation dehydrating unit of switch cubicle according to claim 4, is characterized in that: described dehydrating unit also comprises communication module, and this communication module is connected with sensor electrical.

6. the anti-condensation dehydrating unit of switch cubicle according to claim 5, is characterized in that: described transducer is temperature sensor and/or humidity sensor.