CN106329341B - Semiconductor dehumidifying device for switchgear cool-down dehumidification - Google Patents

Abstract

The invention discloses a kind of semiconductor dehumidifying devices for switchgear cool-down dehumidification, including switchgear and dehumidification device；The switchgear includes switch gear room, busbar storehouse, cable bin；The dehumidification device includes dewatering type semiconductor dehumidifier, exhaust fan, wind-collecting cover and PVC pipeline；Exhaust fan is set below dewatering type semiconductor dehumidifier, exhaust fan air draft side is arranged wind-collecting cover, wind-collecting cover with and switchgear in the PVC pipeline that communicates of switch gear room, busbar storehouse, cable bin connect.Structure of the invention is reasonable, high sensitivity, good reliability, safe.

Description

Semiconductor dehumidification device for cooling and dehumidification of switchgear

technical field

The invention relates to a semiconductor dehumidification device used for cooling and dehumidifying a switch cabinet.

Background technique

In summer, especially during the rainy season, the weather is humid and hot, and the long-term operation of circuit breakers and other equipment inside the switch cabinet will generate heat, which will eventually cause condensation in the high and low voltage cabinets in the substation. The protection level of the switchgear is high, and its heat dissipation and ventilation conditions are poor. Due to the good sealing, condensation is formed, and it adheres to the insulating surface to accelerate the deterioration of the insulating medium, causing the circuit breaker to trip or the electrical equipment to be damaged. After several years of operation of the switchgear hanging on the grid, the problem of equipment discharge and heat generation is very prominent. A large part of the reason is that the dehumidification and cooling effect of the switchgear is not good. If the sealing degree of the switchgear and the cable trench is not up to the requirement or it is operated for a long time, it will inevitably cause moisture to enter through small gaps. If the condensation is serious, ionization will occur and ozone will be generated at the same time, which will affect the normal operation of the switchgear and even cause accidents. Therefore, it is very necessary to timely cool down and dehumidify the switchgear.

Contents of the invention

The object of the present invention is to provide a semiconductor dehumidification device for cooling and dehumidifying switch cabinets with reasonable structure, high sensitivity, good reliability and high safety.

Technical solution of the present invention is:

A semiconductor dehumidification device for cooling and dehumidification of switch cabinets, characterized in that: it includes a switch cabinet and a dehumidification device; the switch cabinet includes a switch room, a bus bar warehouse, and a cable warehouse; the dehumidification device includes a drainage type semiconductor dehumidifier, an exhaust fan , air collecting hood and PVC pipe; the exhaust fan is installed under the drainage type semiconductor dehumidifier, and the air collecting hood is installed on the exhaust side of the exhaust fan.

The drainage type semiconductor dehumidifier is used to absorb external air and process it into dry and cold air. The exhaust fan is used to inhale a small amount of external air to change and mix the dry and cold air flowing through the air collecting partition. The air collecting hood and PVC pipe are used to For the transmission of dry and cold air.

The drainage type semiconductor dehumidifier is used to cool and dehumidify the air outside the switchgear to meet the requirements of safe operation of the switchgear; the exhaust fan is used to collect the cold air in the direction of the wind collection hood; the wind collection hood is to collect the prepared cold air; PVC pipes It is to transport the cold air to the cable warehouse, busbar warehouse and switch room of the switch cabinet to cool and dehumidify them to ensure the safe and stable operation of the components in the switch cabinet.

Drain type semi-conductor dehumidifier, exhaust fan, wind collecting hood and PVC pipe can realize uninterrupted input of dry cold air for the switchgear, reduce the temperature and humidity in the switchgear, and ensure the operation of the switchgear in a safe environment.

The semiconductor dehumidifier detects the temperature and humidity of the air outside the switch cabinet. When the temperature and humidity of the outside air meet the requirements, the exhaust fan is directly started to pass the dry cold air into the switch cabinet; when the air temperature and humidity are unqualified, the drainage type semiconductor dehumidifier The air is cooled and dehumidified to realize the separation of water and gas. When the temperature and humidity of the air after cooling and dehumidification meet the requirements, the exhaust fan is turned on to transport the dry cold air to the switch cabinet through the wind collecting hood and PVC pipes. When the temperature and humidity of the switch cabinet When the requirements for safe operation are met, the dehumidifier and exhaust fan stop running; as the components in the switch cabinet heat up, when the temperature and humidity sensor in the switch cabinet detects that the temperature or humidity does not meet the requirements, the exhaust fan continues to work until the switch cabinet The temperature and humidity in the cabinet meet the requirements.

The space of the traditional switchgear busbar warehouse is small, so it is not suitable to add a dehumidification device inside. This invention designs a dehumidifier on the outside, and through the PVC pipe, the dry cold air is delivered to the busbar warehouse from the pressure relief hole of the switchgear, ensuring the safety of the equipment. Stable operation.

In the present invention, the prepared dry cold air is transported to the switch room, the cable warehouse and the bus warehouse through the PVC three-way pipe, which is faster than the traditional dehumidification, the dehumidification effect is quick and obvious, and the cost is saved.

The invention realizes the separation of water and air through the drainage type semiconductor dehumidifier, passes the dry cold air into the switch cabinet, and can completely solve the problem of condensation in the switch cabinet. When the incoming cold air is heated, more water vapor can be accommodated. As the dry and cold air is continuously introduced, the hot and humid air is continuously discharged and diluted, and finally the water vapor in the switchgear can be completely discharged.

The invention realizes the separation of water and gas through the drainage type semiconductor dehumidifier, and the discharged water can be recovered through a fixed flow channel or discharged outside, avoiding the secondary condensation of traditional dehumidification water vapor.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is a structural schematic diagram of an embodiment of the present invention.

A semiconductor dehumidification device used for cooling and dehumidification of switchgear, including a switchgear 1 and a dehumidification device 2; the switchgear includes a switch room 3, a bus bar compartment 4, and a cable compartment 5; the dehumidification device includes a drainage type semiconductor dehumidifier 6 , exhaust fan 7, air collecting hood 8 and PVC pipe 9; the exhaust fan is arranged under the drainage type semiconductor dehumidifier, and the air collecting hood is arranged on the exhaust side of the exhaust fan. pipe connection;

The drainage type semiconductor dehumidifier is used to absorb external air and process it into dry and cold air. The exhaust fan is used to inhale a small amount of external air to change and mix the dry and cold air flowing through the air collecting partition. The air collecting hood and PVC pipe are used to For the transmission of dry and cold air.

The drainage type semiconductor dehumidifier is used to cool and dehumidify the air outside the switch cabinet to meet the requirements of safe operation of the switch cabinet; the exhaust fan is used to collect the cold air in the direction of the air collection hood; the air collection hood is to collect the prepared cold air; PVC pipes It is to transport the cold air to the cable warehouse, busbar warehouse and switch room of the switch cabinet to cool and dehumidify them to ensure the safe and stable operation of the components in the switch cabinet.

Drain type semi-conductor dehumidifier, exhaust fan, wind collecting hood and PVC pipe can realize uninterrupted input of dry cold air for the switchgear, reduce the temperature and humidity in the switchgear, and ensure the operation of the switchgear in a safe environment.

The semiconductor dehumidifier detects the temperature and humidity of the air outside the switch cabinet. When the temperature and humidity of the outside air meet the requirements, the exhaust fan is directly started to pass the dry cold air into the switch cabinet; when the air temperature and humidity are unqualified, the drainage type semiconductor dehumidifier The air is cooled and dehumidified to realize the separation of water and gas. When the temperature and humidity of the air after cooling and dehumidification meet the requirements, the exhaust fan is turned on to transport the dry cold air to the switch cabinet through the wind collecting hood and PVC pipes. When the temperature and humidity of the switch cabinet When the requirements for safe operation are met, the dehumidifier and exhaust fan stop running; as the components in the switch cabinet heat up, when the temperature and humidity sensor in the switch cabinet detects that the temperature or humidity does not meet the requirements, the exhaust fan continues to work until the switch cabinet The temperature and humidity in the cabinet meet the requirements.

Claims (3)

1. a kind of semiconductor dehumidifying device for switchgear cool-down dehumidification, it is characterized in that：Including switchgear and dehumidification device；Institute It includes switch gear room, busbar storehouse, cable bin to state switchgear；The dehumidification device includes dewatering type semiconductor dehumidifier, exhaust fan, collection Fan housing and PVC pipeline；Exhaust fan is set below dewatering type semiconductor dehumidifier, and wind-collecting cover is arranged in exhaust fan air draft side, collects wind Cover with and switchgear in the PVC pipeline that communicates of switch gear room, busbar storehouse, cable bin connect；

The dewatering type semiconductor dehumidifier is for absorbing extraneous air and being processed as cold dry air, and the exhaust fan is for sucking A small amount of extraneous air changes the cold dry air for flowing through collection wind partition board and is mixed with, and the wind-collecting cover and PVC pipeline are used for transmission Cold dry air；

Semiconductor dehumidifier carries out Temperature and Humidity to the air outside switchgear, when the humiture of extraneous air is met the requirements, Exhaust fan is directly initiated, dry cold wind is passed through switchgear；When aerial temperature and humidity is unqualified, dewatering type semiconductor dehumidifier Cool-down dehumidification then is carried out to air, realizes aqueous vapor separation, when the aerial temperature and humidity after cool-down dehumidification is met the requirements, the then row of unlatching Dry cold air is transported to by wind-collecting cover and PVC pipeline in switchgear by fan, when the humiture of switchgear reaches safety When the requirement of operation, dehumidifier, exhaust fan are out of service；With the operational heat of component in switchgear, when in switchgear Temperature Humidity Sensor detects that temperature or humidity not up to require, then exhaust fan works on, until the humiture in switchgear It meets the requirements.

2. the semiconductor dehumidifying device according to claim 1 for switchgear cool-down dehumidification, it is characterized in that：Dewatering type half Conductor dehumidifier is used to the air outside switchgear carrying out cool-down dehumidification, reaches the requirement of switchgear safe operation；Exhaust fan For cold wind to be collected toward wind-collecting cover direction；Wind-collecting cover is then to be collected the cold air of preparation；PVC pipeline is then that cold air is defeated It is sent in cable bin, busbar storehouse and the switch gear room of switchgear, cool-down dehumidification is carried out to it, ensure the component peace in switchgear Stable operation entirely.

3. it is used for the semiconductor dehumidifying device of switchgear cool-down dehumidification according to claim 1, it is characterized in that：Dewatering type is partly led Body dehumidifier, exhaust fan, wind-collecting cover and PVC pipeline may be implemented the continual cold air dry for switchgear input, reduce Temperature and humidity in switchgear ensures that switchgear is run under the environment of safety.