| 摘要 |
PURPOSE:To make the pressure in a storage tank constant and improve response to any pressure rise without the use of a heater, by connecting the upper space of a liquefied gas reservoir to the gasified part of inactive gas having a pressure higher than the pressure through a regulator. CONSTITUTION:By means of a signal from a sensor 12 detecting approach of a canning vessel, a control panel 17 opens a dropping valve 3 during a set time through operation of an electromagnetic valve driving device to drop a given quantity of liquefied inactive gas. The inner pressure of a liquefied gas reservoir 1 is kept constant by release of liquefied gas in an upper space 7 through a pressure regulating valve 13 and a liquefied gas release line running from a main tank 5, having a pressure being set so as to be higher than the pressure in the space 7, is connected to a release line 8 through a regulator 16. If the reservoir 1 is reduced in the inner pressure, gasified gas flows in the space 7 to make the inner pressure constant, causing an uniform pressure to be applied to a dropping liquefied gas. |
