| 摘要 |
<p>The invention relates to a method and an apparatus for the equalization of pressure when using a piston feeder (10, 11) for feeding material into a pressurized space (1). The method involves the introduction of material into a cylinder space (8) included in the piston feeder, closing and pressurizing the cylinder space (8), and using a piston (11) included in the piston feeder for advancing the material into the pressurized space (1). According to the invention, a compression piston (52), fitted in a compression cylinder (50) connected to the pressurized space (1), is driven simultaneously with the piston (11) of the piston feeder such that a pressure in the pressurized space (1) remains substantially unchanged and that the kinetic energy of said compression piston (52) is used for operating the piston (11) of the piston feeder.</p> |
