Patent ES-2007820-A6 (ES)
Title: Device for flushing small-dia. hydraulic pipe system
IPC: B08B9/02
Filed: 1988-04-22
Abstract: The device comprises a hydraulic pump for flushing liq. through the pipe system (20), and filters. A pressurised gas is fed into the flushing liq. The flushing circuit includes valves arranged to at first be closed when the pipe system has been filled with flushing liq. and the pressurised gas, in order to compress the gas entrained in the pipe system. - The valves are then opened for expanding the gas, in order to create a forceful flushing pulse through the pipe system. The flushing circuit periodically fills the pipe system alternately with columns (42,43) of gas and liq. (2/2) DEAB- DE3780965 G The device comprises a hydraulic pump for flushing liq. through the pipe system (20), and filters. - A pressurised gas is fed into the flushing liq. - The flushing circuit includes valves arranged to at first be closed when the pipe system has been filled with flushing liq. and the pressurised gas, in order to compress the gas entrained in the pipe system. The valves are then opened for expanding the gas, in order to create a forceful flushing pulse through the pipe system. - The flushing circuit periodically fills the pipe system alternately with columns (42,43) of gas and liq. EPAB- EP-327553 B An apparatus for flushing hydraulic small diameter pipe systems or the like, or part of such a pipe system, comprising a flushing circuit including a hydraulic pump means (2) for flushing liquid through the pipe system, filter means (3) and means (4) for feeding a pressurised gas into the flushing liquid arranged in connection with the hydraulic pump means (2) and further comprising means for coupling the flushing circuit to a pipe system characterised in that the flushing circuit includes valve means (5) arranged, in use, to at first be closed when the pipe system has been filled with flushing liquid and said pressurised gas, and means (2) for compressing the gas entrained in the pipe system, the valve means being arranged to be opened after compression of the gas to allow expansion of the gas, in order to create a forceful flushing pulse through the pipe system. (Dwg.1/2) - EP-327553 B An apparatus for flushing hydraulic small diameter pipe systems or the like, or part of such a pipe system, comprising a flushing circuit including a hydraulic pump means (2) for flushing liquid through the pipe system, filter means (3) and means (4) for feeding a pressurised gas into the flushing liquid arranged in connection with the hydraulic pump means (2) and further comprising means for coupling the flushing circuit to a pipe system characterised in that the flushing circuit includes valve means (5) arranged, in use, to at first be closed when the pipe system has been filled with flushing liquid and said pressurised gas, and means (2) for compressing the gas entrained in the pipe system, the valve means being arranged to be opened after compression of the gas to allow expansion of the gas, in order to create a forceful flushing pulse through the pipe system. (Dwg.1/2) USAB- US5007444 A The device comprising a hydraulic pump for flushing a liquid through the pipe system, and filter together forming a flushing circuit. - A member for coupls a slushing circuit to a pipe system, and member for feeds a gas into the flushing liquid arranged in combination with the hydraulic pump. The flushing circuit includes valves arranged to at first be closed when the pipe system has been filled with flushing liquid and gas. - A member compresses the gas entrained in the pipe system, and the valve after is opened for expanding the compressed gas, in order to