Piston apparatus for gas/liquid pipeline
OwnerJim S. Blairinventor
Life of this patent
Estimating the term…
Abstract
A reciprocating fluid driven apparatus has a hollow elongate barrel with an inlet and an outlet in fluid communication with portions of a pipeline, a piston reciprocating within the barrel and having a through hole for fluid communication between spaces above and below the piston, and a cyclically operable closure member for opening and closing the through hole allowing upward and downward piston movements, the piston having piston rods extending from an upper end and a lower end of the piston to an exterior of the barrel so that a pressure at opposite sides of said piston is balanced to allow operation at unlimited pressures.
Claims8
A reciprocating fluid driven apparatus for a pipeline system carrying fluid under pressure, the apparatus comprising a hollow elongate barrel having a top end, an opposed bottom end, an inlet in fluid communication with a portion of the pipeline, and an outlet in fluid communication with another portion of the pipeline;
- a piston located within said barrel for reciprocating sliding therein in a relatively fluid-tight manner, said piston having a through hole for fluid communication between a space above said piston and a space below said piston;
- and a cyclically operable closure member for opening and closing said through hole, said piston being moved upwardly in said barrel by the pressurized fluid beneath said piston to an upper limit of said travel upon said closure member closing said through hole and being allowed to fall by force of gravity from said upper limit of travel to a lower limit of travel upon said closure member opening said through hole to allow said fluid beneath said piston to travel above said piston for discharge of the fluid into the pipeline, said piston including a piston rod extending from an upper end of said piston through said top end of said barrel in a relatively fluid-tight manner, and lower piston rod extending from a lower end of said piston through said bottom end of said barrel in a relatively fluid-tight manner so that a pressure at opposite sides of said piston is balanced to allow operation at unlimited pressures.
A reciprocating fluid driven apparatus for a pipeline system carrying fluid under pressure, the apparatus comprising a hollow elongate barrel having a top end, an opposed bottom end, an inlet in fluid communication with a portion of the pipeline, and an outlet in fluid communication with another portion of the pipeline;
- a piston located within said barrel for reciprocating sliding therein in a relatively fluid-tight manner, said piston having a through hole for fluid communication between a space above said piston and a space below said piston;
- and a cyclically operable closure member for opening and closing said through hole, said piston being moved upwardly in said barrel by the pressurized fluid beneath said piston to an upper limit of said travel upon said closure member closing said through hole and being allowed to fall by force of gravity from said upper limit of travel to a lower limit of travel upon said closure member opening said through hole to allow said fluid beneath said piston to travel above said piston for discharge of the fluid into the pipeline, said piston including a piston rod extending from an upper end of said piston through said top end of said barrel in a relatively fluid-tight manner, and lower piston rod extending from a lower end of said piston through said bottom end of said barrel in a relatively fluid-tight manner so that a pressure at opposite sides of said piston is balanced to allow operation at unlimited pressures, said closing member being a valve arranged on said piston and operative for closing and opening of said through hole;
- and locking means for locking said valve when it closes said through hole and when it opens said through hole correspondingly.
A reciprocating fluid driven apparatus as defined in claim 10, wherein said valve has a valve shaft which is movable substantially vertically between closed and open positions for closing and opening said through hole correspondingly, said locking means including a first detent means and a second detent means provided on said valve shaft and spaced from one another in a substantially vertical direction, and a set of levers which is selectively engageable in the corresponding one of said first and second detent means so as to lock said valve shaft in said closed and open positions correspondingly.
A reciprocating fluid driven apparatus for a pipeline system carrying fluid under pressure, the apparatus comprising a hollow elongate barrel having a top end, an opposed bottom end, an inlet in fluid communication with a portion of the pipeline, and an outlet in fluid communication with another portion of the pipeline;
- a piston located within said barrel for reciprocating sliding therein in a relatively fluid-tight manner, said piston having a through hole for fluid communication between a space above said piston and a space below said piston;
- and a cyclically operable closure member for opening and closing said through hole, said piston being moved upwardly in said barrel by the pressurized fluid beneath said piston to an upper limit of said travel upon said closure member closing said through hole and being allowed to fall by force of gravity from said upper limit of travel to a lower limit of travel upon said closure member opening said through hole to allow said fluid beneath said piston to travel above said piston for discharge of the fluid into the pipeline, said piston including a piston rod extending from an upper end of said piston through said top end of said barrel in a relatively fluid-tight manner, and lower piston rod extending from a lower end of said piston through said bottom end of said barrel in a relatively fluid-tight manner so that a pressure at opposite sides of said piston is balanced to allow operation at unlimited pressures, said piston being formed as a solid member provided with said through hole which extends through said solid member.
A reciprocating fluid driven apparatus for a pipeline system carrying fluid under pressure, the apparatus comprising a hollow elongate barrel having a top end, an opposed bottom end, an inlet in fluid communication with a portion of the pipeline, and an outlet in fluid communication with another portion of the pipeline;
- a piston located within said barrel for reciprocating sliding therein in a relatively fluid-tight manner, said piston having a through hole for fluid communication between a space above said piston and a space below said piston;
- and a cyclically operable closure member for opening and closing said through hole, said piston being moved upwardly in said barrel by the pressurized fluid beneath said piston to an upper limit of said travel upon said closure member closing said through hole and being allowed to fall by force of gravity from said upper limit of travel to a lower limit of travel upon said closure member opening said through hole to allow said fluid beneath said piston to travel above said piston for discharge of the fluid into the pipeline, said piston including a piston rod extending from an upper end of said piston through said top end of said barrel in a relatively fluid-tight manner, and lower piston rod extending from a lower end of said piston through said bottom end of said barrel in a relatively fluid-tight manner so that a pressure at opposite sides of said piston is balanced to allow operation at unlimited pressures;
- and a top spring and a bottom spring arranged at said upper end at said lower end of said piston correspondingly so that when said piston reaches said top end of said barrel, said top spring is compressed and stores energy, and when said piston reaches said bottom end of said barrel said bottom spring is compressed and
Dependencies are inferred from the claim text.