| 摘要 |
<p>A liquid storage tank (10) for providing a liquid for pressure in such a way that pressurized air will not be absorbed by the liquid is disclosed. According to one embodiment of this invention, the pressurized storage tank (10) of this invention having side walls (12) and an end wall (14) uses a plunger or a plate (24) having a seal (26) which is biased to move within the tank as water or liquid is forced into the tank or withdrawn from the tank. According to this embodiment springs (38, 40, 42) may be positioned in different arrangements and used to provide the bias that maintains the water or liquid under pressure. Still other embodiments use mass (68) or weight while still others use power actuated means (56) or air pressure for providing the necessary bias. In other embodiments of the invention, the tank may include a seal and/or a collapsable liner (66) to prevent any of the liquid from passing the plunger or piston (24). The addition of a collapsable liner (66) is especially useful if the liquid to be maintained under pressure is corrosive.</p> |
