| 摘要 |
<p>PURPOSE:To cover the necessary differential pressure between high and low holders with boosting through a carrying blower by providing a changeover valve and a gas carrying blower between an operating holder and main tube thereby storing/discharging gas between said holder and tube. CONSTITUTION:When predetermining the boost of blower 7 on the basis of the maximum necessary differential pressure between gas holders 1A, 1B plus carrying line pressure loss, adjusting of valve during operation is not required because of level variation due to design pressure of holders 1A, 1B, differential gas density or operating pressure variation. Adjusting of level of holder 1B is performed through stop/operation of blower 7 provided at the holder 1A side. While since the differential pressure of gas holder tube is the function of boost of carrying blower 7, differential pressure is not required between two holders.</p> |
