Rapper device
AssigneeShell Oil Company
InventorsAlfons HEITMANN, Uwe Herwig, Thomas Paul Von Kossak-Glowczewski
Life of this patent
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Abstract
A rapper device for cleaning a heat exchange surface in a pressure vessel by transmitting impact energy. The rapper device comprises a striker and an impacting device for impacting the striker which has one end contacting the heat exchange surface in the pressure vessel. The striker comprises a piston section comprising a piston rod projecting out of the pressure vessel via a passage opening in line with the impacting device. A piston head is slideable within a piston chamber in line with the passage opening. The piston chamber is operatively connected to a sealing gas supply. The piston head is a separate part with an aperture. The piston rod runs through the aperture, e.g., in a slideable arrangement.
Claims9
A rapper device for cleaning a heat exchange surface in a pressure vessel by transmitting impact energy, the rapper device comprising a striker and an impacting device for impacting the striker which has one end contacting the heat exchange surface in the pressure vessel, wherein the striker comprises a piston section comprising a piston rod projecting out of the pressure vessel via a passage opening in line with the impacting device, and a piston head slideable within a piston chamber in line with the passage opening, the piston chamber being operatively connected to a sealing gas supply, wherein the piston head is a separate part with an aperture, wherein the piston rod runs through the aperture.
Dependencies are inferred from the claim text.