45results about How to "Avoid cross flow" patented technology

A variety of methods for operating a chromatography system are presented. Specifically, methods for operating a pumping system within a chromatography system are presented. The methods presented are directed to pumping apparatus in which very small amounts of fluid are pumped through the system. A number of techniques for detecting and compensating for leaks are presented as well as a number of techniques for operating the pumping system.

A variety of methods for operating a chromatography system are presented. Specifically, methods for operating a pumping system within a chromatography system are presented. The methods presented are directed to pumping apparatus in which very small amounts of fluid are pumped through the system. A number of techniques for detecting and compensating for leaks are presented as well as a number of techniques for operating the pumping system.

A plurality of guide vanes (34) in a variable turbine geometry turbocharger (10) regulates a flow of exhaust gas. The guide vanes (34) are selectively adjustable between an open position to allow the flow of exhaust gas to drive a turbine wheel (24) and a closed position to block the flow of exhaust gas. A first flow feature (58) is disposed on first (44) and second (46) edges of the guide vanes (34) to disturb the flow of exhaust gas to prevent leakage of exhaust gas around the first (44) and second (46) edges. A second flow feature (64) is disposed on front (60) and rear (62) surfaces of the guide vanes (34) to channel the flow of exhaust gas between adjacent guide vanes (34) when the guide vanes (34) are in the open position to prevent swirling and / or cross flow of the exhaust gas.

The invention provides a basement comprehensive water discharge system, which belongs to a self flowing and forced water discharge combined measure of preventing the re-injection of outwards discharged sewage of a water consuming point with great outdoor pipe network buried depth and the indoor pipe network ground elevation lower than outdoor pipe network ground elevation through possible self flowing. The basement comprehensive water discharge system comprises a user pipe 1, a cutting pipe 2, an external sewage pipe 3, a check valve plate 4, a water collecting well 5, an outdoor drain well 6, a sewage lifting pump 7, a pressure pipe 8, an out-leading pipe design maximum water line 9, a low level pump stop water level contact 10, a high level pump starting water level contact 11 and a local control box 12, wherein the pipe top elevation of the external sewage pipe 3 is lower than the out-leading pipe design maximum water line 9; the cutting pipe 2 is cut from the intersection part of the cutting pipe 2 and the external sewage pipe 3 to the out-leading pipe design maximum water line 9; if the external sewage pipe 3 is fully filled through water bursting, sewage can overflow from the cutting pipe 2 to the water collecting well 5; when the water level in the water collecting well 5 reaches the high level pump starting water level contact 11, the sewage lifting pump 7 starts; when the water level is reduced to 10 through water pumping, the sewage lifting pump 7 stops working, so that the re-injection of the sewage lifting pump 7 and the indoor part is avoided; when the outdoor pipe network generates a water level raising phenomenon, the check valve plate 4 is closed; and when the condition is normal, the check valve plate 4 is opened, and the self flowing water discharge is performed.