| 摘要 |
A fluid pressure system (S) includes a flexible diaphragm bladder ( 172 ) located inside a pressure tank ( 164 ) installed within a fluid system such as well ( 168 ). In preferred aspects, the bladder ( 172 ) can be inflated by the introduction of air and is located within a flexible confining tube ( 198 ) or confining element ( 298 ) for preventing over expansion of the bladder ( 172 ). The bladder ( 172 ) and the confining tube or element ( 198, 298 ) are free floating in and without physical connection with the pressure tank ( 164 ) in preferred forms. The pressure tank ( 164 ) includes a flexible side wall ( 196 ) to allow folding or willing of the assembled fluid pressure system (S) in preferred forms. Confining tube ( 198 ) in a preferred form is of a cylindrical configuration and arranged concentrically around the bladder ( 172 ). Confining element ( 298 ) is carried by the bladder ( 172 ) and creates a barrier extending along a chord of a cross section of pressure tank ( 164 ).
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