Gas lifter which is multi mind pressure

摘要

PURPOSE: A gas lifter with plural pressure chambers is provided to uniformly maintain elastic rebound force of the gas lifter even in case of outflow of gas and even at an ultimate temperature area by installing at least two pressure chambers to the inside of the gas lifter. CONSTITUTION: A gas lifter with plural pressure chambers comprises a pipe(10) in which gas is filled; a rod(20) one end of which is inserted in the pipe; a piston(30) fitted into the tip of the rod installed in the pipe; a sealing member(40) sealing the pipe to prevent the gas filled in the pipe from flowing to the outside; a high-pressure stopper(80) dividing the inside of the pipe into a low-pressure chamber(100) and a high-pressure chamber(200); a high-pressure piston(70) installed to one end of a high-pressure rod(60) fitted into the high-pressure stopper; and a high-pressure rod guide(90) installed to one end of the high-pressure stopper, to guide the movement of the high-pressure rod. A fixing clip(11) is combined to one end of the pipe. Another fixing clip(21) is combined to the other end of the rod. A guide groove(32) through which gas moves is formed on a side of the piston.