CN103227423A - Dehumidification system of high voltage switch cabinet - Google Patents

Abstract

The invention discloses a high-voltage switchgear dehumidification system, which comprises a front dehumidification unit, a rear dehumidification unit and a power supply (1), and the front dehumidification unit and the rear dehumidification unit are located at the interval of the high-voltage switchgear (2) , the power supply terminal of the front dehumidification unit and the power supply terminal of the rear dehumidification unit are connected to the power supply (1) through the power cord, and the drain port of the front dehumidification unit and the drain port of the rear dehumidification unit are connected to the switch cabinet through the combined drain pipe The outdoor (30) is connected or the drain port of the front dehumidification unit and the drain port of the rear dehumidification unit are directly connected with the cable trench of the high voltage switch cabinet (2). The invention can not only avoid the influence of the ambient humidity on the high-voltage switchgear and other switchgears, but also prevent the equipment in the cabinet from getting damp and the insulation performance of electrical appliances from decreasing.

Description

A high-voltage switch cabinet dehumidification system

technical field

The invention relates to a high-voltage switch cabinet dehumidification system.

Background technique

For a long time, the high-voltage switchgear and other switchgears of the power supply and distribution system are affected by the ambient humidity. The high-voltage switchgear operates in a semi-sealed environment without good ventilation. As long as high-humidity weather occurs, the high-humidity air It will continue to invade the high-voltage switchgear. Once the high-humidity air enters, it is difficult to discharge naturally. Therefore, the equipment in the high-voltage switchgear is damp, and the insulation of electrical appliances is reduced, causing problems such as grounding of live equipment, discharge of live equipment to the ground, and short circuit of the power supply; currently The power supply and power distribution system used the following methods to deal with the problem of equipment dampness: 1. Install heaters in the high-voltage switchgear and other switchgears, but the electric heater can only play a role in humid air for the surrounding local humid air. Decomposition, the humid air is separated from gas and water, and the water molecules rise after being heated, and cool down on the equipment around the high-voltage switchgear or around the high-voltage switch pile head, resulting in condensation, and the moisture still remains inside the cabinet, which makes the inside of the cabinet High-quality electrical components are more susceptible to moisture, which is not conducive to the safe operation of the equipment, nor can it effectively reduce the humidity inside the cabinet. 2. Imported insulating materials are used to increase the insulation of the live parts of the high-voltage switchgear. 3. Multiple high-power air conditioners are used to dehumidify the high-voltage switch room. After treatment, it was found that the effect was not significant, the discharge in the interval of the high-voltage switchgear was still very obvious, and the equipment was still working in an unreliable state.

Contents of the invention

The invention provides a high-voltage switchgear dehumidification system, which can not only avoid the influence of ambient humidity on the high-voltage switchgear and other switchgears, but also prevent the equipment in the cabinet from being damp and the insulation performance of electrical appliances from being reduced.

The present invention adopts the following technical solutions: a high-voltage switch cabinet dehumidification system, which includes a front dehumidification unit, a rear dehumidification unit and a power supply, and the front dehumidification unit and the rear dehumidification unit are located at the interval in the high-voltage switch cabinet. The power end of the front dehumidification unit and the power end of the rear dehumidification unit are connected to the power supply through the power cord, and the drain port of the front dehumidification unit and the drain port of the rear dehumidification unit are connected to the outdoor of the switch cabinet through the combined drain pipe or The drain port of the front dehumidification unit and the drain port of the rear dehumidification unit are directly connected with the cable trench of the high voltage switch cabinet. the

The front dehumidification unit includes a dehumidifier I and a dehumidifier II, and the rear dehumidification unit includes a dehumidifier III, and the dehumidifier III is located between the dehumidifier I and the dehumidifier II. Dehumidifier Ⅰ, dehumidifier Ⅱ and dehumidifier Ⅲ are distributed in a triangle, and the tops of dehumidifier Ⅰ and dehumidifier Ⅱ are respectively equipped with exhaust port Ⅰ and exhaust port Ⅱ. Air inlet Ⅰ and air inlet Ⅱ are respectively provided on the side of the dehumidifier Ⅰ and Ⅱ, and drainage outlet Ⅰ and drainage outlet Ⅱ are respectively provided at the bottom of dehumidifier Ⅰ and dehumidifier Ⅱ, and drainage outlet Ⅰ and drainage outlet Ⅱ are respectively connected to outlet pipe Ⅰ One end of the outlet pipe I is connected to the drain outlet I, one end of the outlet pipe II is connected to the drain outlet II, the top of the dehumidifier III is provided with an exhaust port III, and the side of the dehumidifier III is provided with Air inlet Ⅲ, the bottom of dehumidifier Ⅲ is provided with drainage outlet Ⅲ, and the drainage outlet Ⅲ is connected to the outlet pipe Ⅲ, and one end of the outlet pipe Ⅲ is connected with the drainage outlet Ⅲ. The other end of the front drain pipe and the outlet pipe III is connected to the rear drain pipe, the other end of the outlet pipe I is connected to the front drain pipe through the elbow water outlet I, and the other end of the outlet pipe II is connected to the outlet pipe II through the elbow outlet II. The front drain pipe is connected, the outlet pipe III is connected with one end of the rear drain pipe, and the other end of the rear drain pipe is connected with the front drain pipe through a tee.

The front dehumidification unit includes a dehumidifier I and a dehumidifier II, and the rear dehumidification unit includes a dehumidifier III, and the dehumidifier III is located between the dehumidifier I and the dehumidifier II. Dehumidifier Ⅰ, dehumidifier Ⅱ and dehumidifier Ⅲ are distributed in a triangle, and the tops of dehumidifier Ⅰ and dehumidifier Ⅱ are respectively equipped with exhaust port Ⅰ and exhaust port Ⅱ. Air inlet Ⅰ and air inlet Ⅱ are respectively provided on the side of the dehumidifier Ⅰ and Ⅱ, and drainage outlet Ⅰ and drainage outlet Ⅱ are respectively provided at the bottom of dehumidifier Ⅰ and dehumidifier Ⅱ, and drainage outlet Ⅰ and drainage outlet Ⅱ are respectively connected to outlet pipe Ⅰ One end of the outlet pipe I is connected to the drain outlet I, one end of the outlet pipe II is connected to the drain outlet II, the top of the dehumidifier III is provided with an exhaust port III, and the side of the dehumidifier III is provided with Air inlet Ⅲ, the bottom of dehumidifier Ⅲ is provided with drain outlet Ⅲ, drain outlet Ⅲ is connected with outlet pipe Ⅲ, one end of outlet pipe Ⅲ is connected with drain outlet Ⅲ, the other end of outlet pipe Ⅰ is connected with cable trench, and the outlet The water pipe II communicates with the cable trench, and the other end of the outlet pipe III communicates with the cable trench. The bottoms of the dehumidifier I and the dehumidifier II of the front dehumidification unit are respectively provided with a power interface I and a power interface II, the power interface I of the dehumidifier I is connected to the power supply through a power cord, and the The power interface II is connected to the power supply through the power cord, and the power interface III provided at the bottom of the dehumidifier III of the rear dehumidification unit is connected to the power supply through the power cord. The power supply is set as a 12V DC power supply, and the 12V DC power supply is converted from the 220V power supply of the high-voltage cabinet through a 250W inverter power supply.

The present invention has the following beneficial effects: the present invention is provided with three dehumidifiers, and the dehumidifiers are used as a main component to be combined in the high-voltage switch interval to form a dehumidification system, which removes the water in the high-humidity air in the high-voltage switch interval. Molecules are gradually collected into the water collection of combined products, which can not only avoid the impact of high-humidity environment in the interval of high-voltage switchgear, but also prevent problems such as electrical insulation decline, live equipment grounding, live equipment discharge to ground, and power supply short circuit, etc., greatly reducing It saves investment, produces good results, and improves power security. The power supply of the present invention adopts the power supply in the high-voltage switch cabinet, which can greatly save the use cost. The invention not only solves the problems of long-term problems, such as grounding of live equipment, discharge of live equipment to ground, and short circuit of power supply caused by dampness of live equipment in the interval of high-voltage switchgear, but also makes the humidity in the interval of high-voltage switchgear not greater than 70RH%. The insulation between the cabinet and the live equipment ensures the safe operation of the equipment. The invention adopts a fully automatic working mode, which can be combined flexibly according to the types of equipment installed in the high-voltage switch interval and the arrangement of the high-voltage equipment in the high-voltage switch cabinet.

Description of drawings

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

Fig. 2 is a schematic diagram of the present invention communicating with the outdoor of the switch cabinet through the combined drain pipe.

Fig. 3 is a schematic diagram of the present invention directly communicating with the cable trench of the high-voltage switch cabinet.

Detailed ways

Embodiment 1, in Fig. 1 and Fig. 2, the present invention provides a high-voltage switchgear dehumidification system, which includes a front dehumidification unit, a rear dehumidification unit and a power supply 1, and the front dehumidification unit and the rear dehumidification unit are located at At the interval between 2 in the high-voltage switchgear, the power supply terminal of the front dehumidification unit and the power supply terminal of the rear dehumidification unit are connected to the power supply 1 through the power cord, and the drain port of the front dehumidification unit and the drain port of the rear dehumidification unit pass through The combined drainage pipe is connected with the outdoor 30 of the switch cabinet. The front dehumidification unit includes dehumidifier I3 and dehumidifier II4, and the rear dehumidification unit includes dehumidifier III5. Dehumidifier III5 is located in the dehumidifier Between dehumidifier Ⅰ3 and dehumidifier Ⅱ4, dehumidifier Ⅰ3, dehumidifier Ⅱ4 and dehumidifier Ⅲ5 are distributed in a triangle, and the tops of dehumidifier Ⅰ3 and dehumidifier Ⅱ4 are respectively equipped with exhaust port Ⅰ6 and exhaust port Ⅱ7, on the sides of dehumidifier I3 and dehumidifier II4, there are air inlet I8 and air inlet II9 respectively, and the bottoms of dehumidifier I3 and dehumidifier II4 are respectively provided with drainage outlet I10 and drainage outlet II11, and drainage Outlet I10 and drain outlet II11 are respectively connected with outlet pipe I12 and outlet pipe II13, one end of outlet pipe I12 is connected with drain outlet I10, one end of outlet pipe II13 is connected with drain outlet II11, and the top of dehumidifier III5 is provided with a drain Air port Ⅲ14, air inlet Ⅲ15 is provided on the side of dehumidifier Ⅲ5, drainage outlet Ⅲ16 is provided at the bottom of dehumidifier Ⅲ5, and drainage outlet Ⅲ16 is connected with water outlet pipe Ⅲ17, and one end of water outlet pipe Ⅲ17 is connected with drainage outlet Ⅲ16. The drain pipe includes the front drain pipe 18 provided at the bottom of the front dehumidification unit and the rear drain pipe 19 connected to the other end of the outlet pipe III17. The other end of the outlet pipe II13 is connected to the front drain pipe 18 through the elbow water outlet II21, the outlet pipe III17 is connected to one end of the rear drain pipe 19, and the other end of the rear drain pipe 19 is connected to the The front drain pipe 18 is connected, and the bottom of the dehumidifier I3 and the dehumidifier II4 of the front dehumidification unit are respectively provided with a power interface I23 and a power interface II24, and the power interface I23 of the dehumidifier I3 is connected to the power supply 1 through the power line 25 connection, the power interface II24 of the dehumidifier II4 is connected to the power supply 1 through the power cord 25, and the power interface III26 provided at the bottom of the dehumidifier III5 of the rear dehumidification unit is connected to the power supply 1 through the power cord 25. The electrical appliance 1 is set as a 12V DC power supply, and the 12V DC power supply is converted from the 220V power supply 28 of the high-voltage cabinet after being inverted by the 250W inverter power supply 27 .

Embodiment 2. In FIG. 3, this embodiment provides a high-voltage switchgear dehumidification system, which includes a front dehumidification unit, a rear dehumidification unit and a power supply 1, and the front dehumidification unit and the rear dehumidification unit are located in the high-voltage switchgear At the interval of 2 in the cabinet, the power supply terminal of the front dehumidification unit and the power supply terminal of the rear dehumidification unit are connected to the power supply 1 through the power cord, and the drain port of the front dehumidification unit and the drain port of the rear dehumidification unit are directly connected to the high voltage The cables of the switch cabinet 2 are connected in a trench, the front dehumidification unit includes dehumidifier I3 and dehumidifier II4, and the rear dehumidification unit includes dehumidifier III5, and dehumidifier III5 is located between dehumidifier I3 and dehumidifier Between Ⅱ4, dehumidifier Ⅰ3, dehumidifier Ⅱ4 and dehumidifier Ⅲ5 are distributed in a triangle, and the tops of dehumidifier Ⅰ3 and dehumidifier Ⅱ4 are provided with exhaust port Ⅰ6 and exhaust port Ⅱ7 respectively. The sides of Ⅰ3 and dehumidifier Ⅱ4 are provided with air inlet Ⅰ8 and air inlet Ⅱ9 respectively, and the bottom of dehumidifier Ⅰ3 and dehumidifier Ⅱ4 are respectively provided with drainage outlet Ⅰ10 and drainage outlet Ⅱ11, drainage outlet Ⅰ10 and drainage outlet Ⅱ11 The water outlet pipe I12 and the water outlet pipe II13 are respectively connected, one end of the water outlet pipe I12 is connected to the drainage outlet I10, and one end of the water outlet pipe II13 is connected to the drainage outlet II11. The side of dehumidifier III5 is provided with air inlet III15, the bottom of dehumidifier III5 is provided with drain outlet III16, and drain outlet III16 is connected with outlet pipe III17, one end of outlet pipe III17 is connected with drain outlet III16, and the other end of outlet pipe I12 is connected with The cable trench is connected, the outlet pipe II13 is connected with the cable trench, and the other end of the outlet pipe III17 is connected with the cable trench, and the bottom of the dehumidifier I3 and dehumidifier II4 of the front dehumidification unit are respectively equipped with power ports I23 and power interface II24, the power interface I23 of the dehumidifier I3 is connected to the power supply 1 through the power cord 25, the power interface II24 of the dehumidifier II4 is connected to the power supply 1 through the power cord 25, and the dehumidifier of the rear dehumidification unit The power interface III26 provided at the bottom of III5 is connected to the power supply 1 through the power cord 25, and the power supply 1 is set as a 12V DC power supply, and the 12V DC power supply passes through the 220V power supply 28 of the high voltage cabinet and passes through the 250W inverter power supply 27 Converted after inversion.

The working process of the present invention is as follows: the working process of the front dehumidification unit is: dehumidifier I3: the power supply 1 is respectively input into the power interface I23 of the dehumidifier I3 through the power line 25; when the temperature in the high-voltage switch reaches the start When the dehumidifier Ⅰ3 enters the cycle dehumidification work, until the greenhouse temperature in the high-voltage switch cabinet drops to the stop value; when the dehumidifier Ⅰ3 enters the cycle dehumidification work, the high-humidity air in the high-voltage switch cabinet passes through the air inlet Ⅰ8 Entering the dehumidifier Ⅰ3, the humid air enters the condensation chamber of the dehumidifier Ⅰ3, the water molecules in the humid air are adsorbed on the refrigerating sheet of the refrigerating chamber, and the treated humid air is discharged out of the dehumidifier Ⅰ3 through the exhaust port Ⅰ6 , into the high-voltage switchgear, the humid air in the high-voltage switchgear is in the working state of the dehumidifier Ⅰ3, forcing the humid air in the high-voltage switchgear to circulate continuously, so that the humidity of the high-voltage switchgear gradually decreases. A large number of condensed water molecules form water droplets in the refrigeration chamber, flow out through the drain outlet I10, and collect to the front drain pipe 18 through the outlet pipe I12; dehumidifier II4: the power supply 1 is respectively input to dehumidify through the power line 25 The power interface Ⅱ24 of the device Ⅱ4; when the temperature in the high-voltage switch reaches the starting value, the dehumidifier Ⅱ4 enters the cycle dehumidification work until the greenhouse temperature in the high-voltage switch cabinet drops to the stop value; the dehumidifier Ⅱ4 enters the cycle dehumidification work At this time, the high-humidity air in the high-voltage switch cabinet enters the dehumidifier II4 through the air inlet II9, and the humid air enters the condensation chamber of the dehumidifier II4. The treated humid air is discharged from the dehumidifier Ⅱ4 through the exhaust port Ⅱ7 and enters the high-voltage switchgear. The humid air in the high-voltage switchgear is forced to circulate continuously in the high-voltage switchgear under the working state of the dehumidifier Ⅱ4. Make the humidity of the high voltage switchgear drop gradually. A large number of condensed water molecules form water droplets in the refrigeration chamber, flow out through the drain outlet II11, and collect to the front drain pipe 18 through the outlet pipe II13;

The working process of the rear dehumidification unit is as follows: the power supply 1 supplies power to the power interface Ⅲ26 of the dehumidifier Ⅲ5 through the power line 25; when the temperature in the high-voltage switch reaches the starting value, the dehumidifier Ⅲ5 enters the cycle dehumidification work , until the greenhouse temperature in the high-voltage switch cabinet drops to the stop value; when the dehumidifier Ⅲ5 enters the cycle dehumidification work, the high-humidity air in the high-voltage switch cabinet enters the dehumidifier Ⅲ5 through the air inlet Ⅲ15, and the humid air enters the dehumidifier In the condensation chamber of dehumidifier Ⅲ5, the water molecules in the humid air are adsorbed on the refrigerating sheet of the refrigerating chamber, and the treated humid air is discharged from dehumidifier Ⅲ5 through the exhaust port Ⅲ14, and enters the high-voltage switchgear, and the humidity in the high-voltage switchgear When the air is in the working state of the dehumidifier III5, the humid air in the high-voltage switchgear is forced to circulate continuously, so that the humidity of the high-voltage switchgear gradually decreases. A large number of condensed water molecules form water droplets in the refrigeration room, flow out through the drain outlet III16, and then collect into the front drain pipe 18 through the outlet pipe III17, the rear drain pipe 19 and the tee 22. The drainage of the three dehumidifiers It is collected in the front drain pipe 18 and discharged.

Claims (5)

1. high-tension switch cabinet dehumidification system, it is characterized in that it comprises anterior Dehumidifying element, rear portion Dehumidifying element and charger (1), anterior Dehumidifying element and rear portion Dehumidifying element are positioned at the interval of high-tension switch cabinet (2), the power end of anterior Dehumidifying element and the power end of rear portion Dehumidifying element all are connected with charger (1) by power line, and the discharge outlet of the discharge outlet of anterior Dehumidifying element and rear portion Dehumidifying element is connected with outdoor (30) of switch cubicle by the combined water drain pipe or the discharge outlet of anterior Dehumidifying element and the discharge outlet of rear portion Dehumidifying element directly are connected with the cable trough of high-tension switch cabinet (2).

2. high-tension switch cabinet dehumidification system according to claim 1, it is characterized in that described anterior Dehumidifying element comprises dehumidifier I (3) and dehumidifier II (4), described rear portion Dehumidifying element comprises dehumidifier III (5), dehumidifier III (5) is positioned between dehumidifier I (3) and the dehumidifier II (4), dehumidifier I (3), dehumidifier II (4) and dehumidifier III (5) are angular distribution, the top of dehumidifier I (3) and dehumidifier II (4) is respectively equipped with exhaust outlet I (6) and exhaust outlet II (7), be respectively equipped with air inlet I (8) and air inlet II (9) in the side of dehumidifier I (3) and dehumidifier II (4), the bottom of dehumidifier I (3) and dehumidifier II (4) is respectively equipped with drain outlet I (10) and drain outlet II (11), drain outlet I (10) and drain outlet II (11) are connected with outlet pipe I (12) and outlet pipe II (13) respectively, one end of outlet pipe I (12) is connected with drain outlet I (10), one end of outlet pipe II (13) is connected with drain outlet II (11), the top of dehumidifier III (5) is provided with exhaust outlet III (14), the side of dehumidifier III (5) is provided with air inlet III (15), dehumidifier III (5) bottom is provided with drain outlet III (16), drain outlet III (16) is connected with outlet pipe III (17), one end of outlet pipe III (17) is connected with drain outlet III (16), the combined water drain pipe comprises the rear portion drainage pipe (19) that the other end of anterior drainage pipe (18) that the bottom of anterior Dehumidifying element is provided with and outlet pipe III (17) is connected, the other end of outlet pipe I (12) is communicated with anterior drainage pipe (18) by elbow water inlet I (20), the other end of outlet pipe II (13) is connected with anterior drainage pipe by elbow water inlet II (21), outlet pipe III (17) is connected with an end of rear portion drainage pipe (19), and the other end of rear portion drainage pipe (19) is connected with anterior drainage pipe (18) by threeway (22).

3. high-tension switch cabinet dehumidification system according to claim 1, it is characterized in that described anterior Dehumidifying element comprises dehumidifier I (3) and dehumidifier II (4), described rear portion Dehumidifying element comprises dehumidifier III (5), dehumidifier III (5) is positioned between dehumidifier I (3) and the dehumidifier II (4), dehumidifier I (3), dehumidifier II (4) and dehumidifier III (5) are angular distribution, the top of dehumidifier I (3) and dehumidifier II (4) is respectively equipped with exhaust outlet I (6) and exhaust outlet II (7), be respectively equipped with air inlet I (8) and air inlet II (9) in the side of dehumidifier I (3) and dehumidifier II (4), the bottom of dehumidifier I (3) and dehumidifier II (4) is respectively equipped with drain outlet I (10) and drain outlet II (11), drain outlet I (10) and drain outlet II (11) are connected with outlet pipe I (12) and outlet pipe II (13) respectively, one end of outlet pipe I (12) is connected with drain outlet I (10), one end of outlet pipe II (13) is connected with drain outlet II (11), the top of dehumidifier III (5) is provided with exhaust outlet III (14), the side of dehumidifier III (5) is provided with air inlet III (15), dehumidifier III (5) bottom is provided with drain outlet III (16), drain outlet III (16) is connected with outlet pipe III (17), one end of outlet pipe III (17) is connected with drain outlet III (16), the other end of outlet pipe I (12) is connected with cable trough, outlet pipe II (13) is connected with cable trough, is connected with cable trough at the other end of outlet pipe III (17).

4. according to claim 2 or 3 described high-tension switch cabinet dehumidification systems, the dehumidifier I (3) and dehumidifier II (4) bottom that it is characterized in that described anterior Dehumidifying element are respectively equipped with power interface I (23) and power interface II (24), the power interface I (23) of dehumidifier I (3) is connected with charger (1) by power line (25), the power interface II (24) of dehumidifier II (4) is connected with charger (1) by power line (25), and the power interface III (26) that dehumidifier III (5) bottom of rear portion Dehumidifying element is provided with is connected with charger (1) by power line (25).

5. high-tension switch cabinet dehumidification system according to claim 4, it is characterized in that described charger (1) is set to the DC power supply of 12V, the DC power supply of 12V is that 220V power supply (28) by high-voltage board is through converted after inverter (27) inversion of 250W.

Images