A vacuum drying system for capacitor voltage divider for transformer

Abstract

The invention provides a vacuum drying system and method for a capacitive voltage divider for transformers. The capacitive voltage divider to be dried is placed on the drying location in the drying space; the drying control module obtains the preset drying temperature threshold and pressure threshold in the drying space And the duration of each step of the drying process; the heating mechanism heats the drying space; the vacuum device vacuumizes the drying space; after reaching the preset drying time, the drying control module controls the breaking valve through the breaking valve control module When it is turned on, the outside air enters the drying space through the dehumidifier, so that the drying space is at normal pressure. Observe through the observation mirror whether there is dew drop, and judge the dryness of the capacitor voltage divider. No insulating oil is produced during the entire drying process, which will not affect personnel and the environment; the drying speed is fast, the product treatment effect is good, the temperature of the product drying process is easy to control, and the internal insulation of the product will not be damaged.

Description

technical field [0001] The invention relates to the technical field of transformer manufacturing, in particular to a vacuum drying system for a capacitor voltage divider for a transformer. Background technique [0002] Capacitive voltage dividers are generally used to measure AC high voltage. Compared with ordinary resistive voltage dividers, they have higher compressive strength and are not easy to break down. A capacitive divider is used to measure the surge voltage. The capacitive voltage divider is also used in the high-voltage AC withstand voltage test for series resonance and resonates with the reactor. [0003] After the capacitive voltage divider is manufactured, it needs to have a certain insulation performance. Usually, the completed capacitive voltage divider is dried. At present, the drying of the capacitive voltage divider is mainly processed by the overall drying and impregnation process. These processes are all The existence of insulating oil is unfavorable ...

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Problems solved by technology

[0003] After the capacitive voltage divider is manufactured, it needs to have a certain insulation performance. Usually, the completed capacitive voltage divider is dried. At present, the drying of the capacitive voltage divider is mainly processed by the overall drying and impregnation process. These processes are all The existence of insulating oil is unfavorable to the occupational health and safety of operators and the external environment; the drying efficiency is not high, the energy consumption is high, the processing time is long, and the overall drying effect is highly dispersed; the temperature resistance requirements of the capacitor voltage divider components are Increased capacitive divider material cost

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