CN204130956U - The anti-condensation system of ring main unit - Google Patents

Abstract

The utility model relates to the anti-condensation system of a kind of ring main unit, comprises the semiconductor dew point dehumidifier in the space being arranged at placement ring main unit and ventilation drying device; Ventilation drying device be included in ring main unit close bottom and cable manhole between formed air channel, the fan be arranged in air channel, control the controller of fan and detect the humidity measuring transducer of air channel humidity, humidity measuring transducer is connected with controller.The utility model passes through the cooperation of semiconductor dew point dehumidifier and ventilation drying device, can effectively prevent from occurring dew condensation phenomenon in ring main unit, thus ensures the safe operation of electric elements in ring main unit.

Description

Ring network cabinet anti-condensation system

technical field

The utility model relates to an anti-condensation system for preventing condensation in a ring network cabinet.

Background technique

The internal space of the new high-voltage ring network cabinet is very compact. In order to ensure its internal insulation level in high-humidity areas and ensure its reliable operation, higher requirements are put forward for moisture-proof and anti-condensation in the cabinet.

When the electrical components are damp, there will be problems including:

1. The electrical equipment is rusted, causing the rotating parts to fail when performing work;

2. After the electrical equipment is severely damp, it is easy to cause electrical breakdown or insulation drop, resulting in potential safety hazards;

3. The electrical equipment is seriously damp for a long time, which will cause the electrical connection of the equipment to be in poor contact, and the equipment will refuse to move or move indiscriminately during the implementation of electrical transmission.

Therefore, solving the condensation problem of the high-voltage ring network cabinet is a necessary condition to ensure the normal operation of electrical components and equipment.

my country has used automatic heating and dehumidification controllers to prevent condensation in switch cabinets for more than ten years. This heating and dehumidification controller has played an active role in anti-humidity and anti-condensation to ensure the reliable operation of high-voltage equipment, but it is used in some areas. There were also some problems. For example: in the rainy season in the south, sometimes the air humidity inside the switch cabinet is high, and there is even condensation in the switch cabinet, because the position of the condensation sensor installed inside the cabinet does not reach the level of condensation, or the condensation The dew sensor has been eroded by dust and gas in the air for a long time, which affects the sensitivity of the sensor. The dew controller cannot start the heater in time, resulting in the failure of the dew control function and the normal operation of the equipment. to threaten.

Contents of the invention

The purpose of the utility model is to provide an anti-condensation system suitable for ring network cabinets with better effect.

For achieving the above object, the technical scheme that the utility model adopts is:

An anti-condensation system for a ring network cabinet, comprising a semiconductor dew point dehumidifier and a ventilation dehumidification device arranged in the space where the ring network cabinet is placed; the ventilation dehumidification device is included in the closed The air duct formed between the bottom and the cable inspection shaft, the fan arranged in the air duct, the controller for controlling the fan, and the humidity measuring sensor for detecting the humidity in the air duct, the humidity measuring sensor and the connected to the controller described above.

Preferably, the air duct has opposite air inlets and air outlets, the air inlets are provided with air inlet louvers, and the air outlets are provided with air outlet louvers.

Preferably, one fan is arranged in the air inlet and the air outlet respectively.

Preferably, the bottom of the ring network cabinet is provided with a channel steel bracket to elevate it and form the air duct with the cable inspection shaft.

Preferably, there are multiple semiconductor dew point dehumidifiers and they are evenly distributed in the space where the ring network cabinet is placed.

Preferably, each of the semiconductor dew point dehumidifiers is connected to the same control system installed in the control box.

Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art: the utility model can effectively prevent dew condensation in the ring network cabinet through the cooperation of the semiconductor dew point dehumidifier and the ventilation dehumidification device, thereby ensuring that the ring network Safe operation of electrical components in the cabinet.

Description of drawings

Accompanying drawing 1 is the schematic diagram of the anti-condensation system of the ring main unit of the present invention.

In the above drawings: 1. Ring network cabinet; 2. Semiconductor dew point dehumidifier; 3. Control box; 4. Air duct; 5. Fan; 6. Channel steel bracket; 9. Air outlet louvers; 10. Air inlet; 11. Air outlet; 12. Cable.

Detailed ways

The utility model will be further described below in conjunction with the embodiment shown in the accompanying drawings.

Embodiment 1: As shown in Figure 1, since the bottom of the ring network cabinet 1 is connected to the inspection well, the moist water vapor in the inspection shaft can easily enter the interior of the ring network cabinet 1 through the gap, so that it is easy to cause condensation when the temperature changes sharply. The anti-condensation system of the network cabinet adopts the scheme of combining the semiconductor dew point dehumidifier 2 and the ventilation and dehumidification device. The semiconductor dew point dehumidifier 2 is set in the space where the ring network cabinet 1 is placed. In this space, a plurality of semiconductor dew point dehumidifiers 2 can be evenly distributed, and each semiconductor dew point dehumidifier 2 can be connected with the same control system set in the control box 3. connected for unified control.

The ventilation and dehumidification device includes an air duct 4 formed between the closed bottom of the ring network cabinet 1 and the cable inspection shaft 7 where the cable 12 is arranged, a fan 5 arranged in the air duct 4, a controller for controlling the operation of the fan 5, and a detection air duct Humidity in 4 and the humidity measurement sensor connected with the controller phase signal. Specifically, the sealed bottom of the ring network cabinet 1 is provided with a channel steel bracket 6 to lift it up, so that there is a certain distance between it and the cable inspection shaft 7 to form an air duct 4 . The air duct 4 has a relative air inlet 10 and an air outlet 11, the air inlet 10 is provided with an air inlet louver 8, the air outlet 11 is provided with an air outlet louver 9, and the air inlet 10 and the air outlet 11 are respectively provided with a fan 5 .

The above-mentioned control system of the semiconductor dew point dehumidifier 2 and the controller of the ventilation and dehumidification device can be integrated into the same control device and placed in the control box 3 .

In the anti-condensation system of the above-mentioned ring network cabinet, the humidity measurement sensor installed in the air duct 4 detects that the humidity in the air duct 4 is relatively high (such as humidity higher than 50%), and the fan 5 is turned on for ventilation; when the humidity is low (such as humidity When it is lower than 40%), stop the ventilation, so as to prevent the humid gas in the inspection shaft from being strung up into the ring main unit 1, and ensure that the damp water vapor will not enter the ring main unit 1. A semiconductor dew point dehumidifier 2 is installed in the space where the ring network cabinet 1 is installed for dehumidification. When the humidity in the space of the ring network cabinet 1 is high (such as the humidity is higher than 50%), the dehumidification is turned on. When the humidity is low (such as the humidity is lower than 40%), stop the dehumidification to ensure that the internal humidity of the ring main unit 1 is stable between 40% and 50%.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (6)

1. the anti-condensation system of ring main unit, is characterized in that: it comprises semiconductor dew point dehumidifier in the space of the ring main unit be arranged at described in placement and ventilation drying device; Described ventilation drying device be included in the air channel formed between the bottom closed of described ring main unit and cable manhole, the fan be arranged in described air channel, control described in the controller of fan and the humidity measuring transducer of the air channel humidity described in detecting, described humidity measuring transducer is connected with described controller.

2. the anti-condensation system of ring main unit according to claim 1, it is characterized in that: described air channel has relative air inlet and air outlet, described air inlet is provided with air feed shutter, and described air outlet is provided with air-out blinds.

3. the anti-condensation system of ring main unit according to claim 2, is characterized in that: be respectively arranged with the fan described in described air inlet and in described air outlet.

4. the anti-condensation system of ring main unit according to claim 1, is characterized in that: the bottom of described ring main unit is provided with channel-section steel bracket and is maked somebody a mere figurehead and and form described air channel between described cable manhole.

5. the anti-condensation system of ring main unit according to claim 1, is characterized in that: described semiconductor dew point dehumidifier is for multiple and be distributed in the space of the ring main unit described in placement.

6. the anti-condensation system of ring main unit according to claim 5, is characterized in that: the semiconductor dew point dehumidifier described in each is all connected with the same control system be arranged in control cabinet.