Moisture-proof switch cabinet and moisture-proof method
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A switchgear and cabinet technology, applied in substation/switch layout details, substation/switchgear cooling/ventilation, climate change adaptation, etc. Achieve the effect of preventing corrosion, improving the effect of moisture-proof corrosion and good weather resistance
Pending Publication Date: 2021-12-28
INFORMATION & COMM COMPANY OF STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY +1
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Problems solved by technology
[0005] The present invention aims to solve the problem in the prior art that the switchgear is easily affected by moisture and the temperature is too high, which leads to the phenomenon of corrosion and aging of the equipment in the switchgear, and now proposes a moisture-proof switchgear and a moisture-proof method
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specific Embodiment approach 1
[0022] Specific Embodiment 1: The terminology used in the present invention is only for the purpose of describing a specific embodiment, and is not intended to limit the present invention. Words such as "upper", "lower", "inner", "outer", "top", "bottom" and other directions or positional relationships as described below are only based on the orientation or positional relationship shown in the drawings, and are only for convenience The description of the present invention and simplified description do not indicate or imply that the referred device / device must have a specific orientation or a specific orientation configuration and operation, and thus should not be construed as limiting the present invention.
[0023] to combine Figure 1-3 Describe this embodiment in detail. A moisture-proof switch cabinet in this embodiment includes a cabinet body 1. A waterproof layer is provided on the inner wall of the cabinet body 1. The waterproof layer includes a polyurethane waterproof ...
specific Embodiment approach 2
[0031] Specific embodiment 2: In this embodiment, a moisture-proof method for a moisture-proof switchgear, the PLC controller stores psychrometric chart information, and the method includes:
[0032] The temperature sensor and humidity sensor in the cabinet respectively receive the temperature value T and the humidity value RH in the cabinet in real time and upload them to the PLC controller. The PLC controller calculates the water vapor condensation temperature T based on the information of the psychrometric chart. 0 ; The specific process is:
[0033]
[0034] Among them, x and y are both constants, the value of x is 238.6°C, and the value of y is 18.36°C; θ(T,RH) is an intermediate variable,
[0035] The above formula needs to meet the temperature inside the cabinet to meet 0°C
[0036] Set the temperature threshold to T max , and T max >T 0 ;
[0037] When the PLC controller detects that the temperature T in the cabinet meets T 0 ...
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Abstract
The invention discloses a moisture-proof switch cabinet and a moisture-proof method, which belong to the field of power equipment. The problem that equipment in the switch cabinet is prone to corrosion and aging due to the fact that an existing switch cabinet is prone to being affected with damp and too high in temperature. The switch cabinet comprises a cabinet body, wherein a temperature and humidity sensor and a controller are arranged in the cabinet body; a waterproof layer is arranged on the inner wall of the cabinet body; an air supply device and an air exhaust device are arranged outside the cabinet body; and all devices on the cabinet body are in communication connection with the controller. The moisture-proof method for the moisture-proof switch cabinet comprises the following steps that a temperature and humidity sensor receives temperature and humidity values in real time and uploads the temperature and humidity values to a controller, and the controller obtains a water vapor condensation temperature T0 according to enthalpy humidity diagram information; a temperature threshold value Tmax is set, and Tmax is greater than T0; when the controller detects that T is more than T0 and less than Tmax, no device is started; when T is equal to T0, the air supply device, the heating device and the exhaust outlet are started at the same time; and when T is greater than or equal to Tmax, the heating device is closed, and after the temperature T is lower than Tmax, the air supply device and the air outlet in the cabinet are closed. The method is used for moisture prevention of the switch cabinet.
Description
technical field [0001] The invention relates to a moisture-proof switch cabinet and a moisture-proof method. It belongs to the field of electric equipment. Background technique [0002] Switchgear is a common power transmission and distribution equipment, which plays a role of control or protection in the process of power transmission and distribution. The inside of the switch cabinet contains related protection devices such as isolating switches and circuit breakers. When the power system fails, the connected equipment can be disconnected through its isolating switch. On the one hand, it protects the connected power equipment and also protects the power operators. safety. It can be seen that the switchgear plays a very important role in the power system. [0003] The insulation capacity of the switchgear is an important factor for the safe and stable operation of the switchgear. In addition to being directly determined by the design, material and quality factors of the ...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/28H02B1/56H02B1/30H02B1/32
CPCH02B1/28H02B1/565H02B1/30H02B1/32Y02A30/14
Inventor 孙绍辉周志强张旭东谭成军陈四根王鹏程张冬亚
Owner INFORMATION & COMM COMPANY OF STATE GRID HEILONGJIANG ELECTRIC POWER COMPANY
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