Dehumidification device for switch cabinet

A technology of switchgear and dehumidification box, which is applied in the cooling/ventilation of substation/switchgear, details of substation/switch layout, substation/distribution device shell, etc. It can solve condensation, water droplets, and even water accumulation, which affects air flow The sequence, affecting the performance of insulating materials, the stability of switchgear and other issues

Active Publication Date: 2020-10-23
江山市鑫源电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The switch cabinet is a kind of electrical equipment. The outside line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs, such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. For some switch cabinets, if the moisture can dissipate in a short period of time, dehumidification is not necessary, but in rainy weather, condensation, water droplets, or even water will appear in the switch cabinet. Dehumidification is necessary, which seriously affects The performance of the internal insulation material and the stability of the switchgear operation
[0003] Since the equipment in the switchgear is in a relatively high temperature state when the equipment in the switchgear is working, the humidity in the air in the switchgear is mainly high. When the conventional switchgear is dehumidified, it mainly uses the fan exhaust method, such as China Patent Notification No. CN210273258U proposes a dehumidification device for switchgear with a heating device for rapid evaporation of water, but the problem is that the air turbulence that may be caused by the fan operation affects the order of air circulation, resulting in incomplete exhaust. And the direct entry of external air will affect the overall effect, and it will also cause safety problems such as dust and static electricity due to the rapid airflow driven by the fan

Method used

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  • Dehumidification device for switch cabinet
  • Dehumidification device for switch cabinet
  • Dehumidification device for switch cabinet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] see Figure 1-3 , a dehumidification device for a switchgear, comprising a dehumidification box 1 arranged side by side with a switchgear body 2, a one-way air flow device 3 connected to the dehumidification box 1 is provided at the upper part of the switchgear, and a lower side of the dehumidification box 1 is provided There is a return air jet 25 connected to the inside of the switchgear body 2. When dehumidifying the switchgear, the air in the switchgear body 2 is drawn out in one direction through the one-way air flow device 3, and dried in the dehumidification box 1. After that, it is re-sent into the switch cabinet body 2 by the return air jet port 25, thus avoiding the interference of the external air on the dehumidification process. The one-way air flow device 3 includes a hydraulic cylinder 4 and an expansion air bag 8, and the hydraulic cylinder 4 is fixed on the switchgear. In the center of the top surface of the cabinet body 2, a lifting rod 5 is provided at...

Embodiment 2

[0023]On the basis of Embodiment 1, the side of the dehumidification box 1 is inserted with a drawer box 24 slidingly connected to it. The drawer box 24 is located in the rotary channel 23 and below the connecting vertical pipe 19. The inside of the drawer box 24 is hollow and has two ends at the upper and lower ends. Opening, when carrying out dehumidification, filter screen can be installed additional in drawer box 24, avoids that dehumidification screen cover 20 is cleaned not thoroughly.

[0024] The top of the dehumidification box 1 is provided with a cleaning window 21, the cleaning window 21 is located directly above the connecting vertical pipe 19, and the cleaning window 21 is used to clean and replace the dehumidification net cover 20 in time to ensure the dehumidification effect.

Embodiment 3

[0026] On the basis of Embodiment 1, sliders 26 are provided on both sides of the lifting plate 6, and the sliders 26 are located in the guide groove 7 and are slidably connected thereto. The cross section of the sliders 26 is "T"-shaped. Avoid the lifting plate 6 from shifting during the lifting process.

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Abstract

The invention discloses a dehumidification device for a switch cabinet. The dehumidification device comprises a dehumidification box arranged in parallel with a switch cabinet body, wherein a one-wayair circulation device connected with the dehumidification box is arranged at the upper part in the switch cabinet body; the lower part of the side surface of the dehumidification box is provided witha backflow air jet hole communicated with the interior of the switch cabinet body. The one-way air circulation device comprises a hydraulic cylinder and an expansion air bag, the hydraulic cylinder is fixed in the center of the inner top surface of the switch cabinet body, a lifting rod is arranged at the output end of the hydraulic cylinder, the lower end of the lifting rod is connected with a lifting plate, and the top part of the expansion air bag is hermetically butted to the bottom surface of the lifting plate. By arranging the one-way air circulation device, the dehumidification deviceavoids the sequence of air circulation from being influenced by air turbulence possibly caused by a fan adopted during conventional dehumidification, ensures orderly entering of air in the switch cabinet body, avoids flying dust static electricity possibly caused when the fan works, and prevents potential safety hazards possibly caused by concurrence of a high-temperature state and a flying dust state in the switch cabinet, and therefore the safety of the switch cabinet is guaranteed in the dehumidification process.

Description

technical field [0001] The invention relates to a switch cabinet dehumidification technology, in particular to a dehumidification device for a switch cabinet. Background technique [0002] The switch cabinet is a kind of electrical equipment. The outside line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs, such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. For some switch cabinets, if the moisture can dissipate in a short period of time, dehumidification is not necessary, but in rainy weather, condensation, water droplets, or even water will appear in the switch cabinet. Dehumidification is necessary, which seriously affects The performance of the internal insulating material and the stability of the switchgear operation. [0003] Since the equipment in the switchgear is in a relatively high temperature state when the equipm...

Claims

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Application Information

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IPC IPC(8): H02B1/56H02B1/28H02B1/30
CPCH02B1/565H02B1/28H02B1/306Y02A30/14
Inventor 柴卫军伍师军夏振华郑小翠
Owner 江山市鑫源电气有限公司
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