| 摘要 |
PURPOSE:To use a tube pole for supporting a tank roof and also for filling or extracting the tank with liquid, by protruding the pole through the roof and making an opening as an inlet or outlet of liquid to be stored on the lower portion, its bottom being fixed to the tank floor. CONSTITUTION:A support 9 of a roof 4 is supported by a bracket 11 fitted to a pole 8. The pole penetrates slidable the roof 4 outdoors and has an opening 15 as an inlet or outlet of liquid to be stored on the lower portion of the tube pole and its bottom is fixed to the tank floor. Since the pole 8 is available for filling or extracting, any extra inlet or outlet of liquid is not required on the roof. The contraction or expansion of the inner tank 3 due to filling or extraction of liquid is produced symmetrically from the bottom center of the tank to the radial direction, which is considered ideal for using the tank, because the pole 8 can be fitted at the center of the roof 4. |
