| 摘要 |
PURPOSE:To make it possible to shorten and extraction time, by applying ultrasonic vibration to a glass pipe filled with insulating oil containing dissolved gas. CONSTITUTION:A gas extracting glass pipe 1 is integrally provided to a water tank 5, and water 6 and an ultrasonic vibrator 7 are received in the water tank 5. The carrier gas extracting dissolved gas introduced from and carrier gas inlet 3 is formed into gas bubbles in the oil entering from an oil injection port 2 and, because the glass pipe 1 is vibrated by the ultrasonic vibrato 7, extraction is promoted. The oil film generated on the bottom part of the glass pipe 1 rises to be broken under heating by a heater wire 9. By this method, oil becomes large in the formation of the oil film and the gas in the oil can be extracted by ultrasonic vibration within a time about half as compared with that when no vibration is applied and the oil film can be perfectly broken by heating said oil film by the heater wire 9 provided to the upper part of an extractor. |
