摘要:
The present invention provides a method of measuring the flow rate of an electrically conductive liquid in laminar flow and to an implementation measurement device that are easy to implement, simple to produce and compact. For this purpose, the invention provides a device for measuring the flow rate, comprising: a channel (1); a pair of electrodes (2a-2b); and at least one device (3) for measuring the voltage (V) between the electrodes (2a-2b) of said pair, an electrical double layer forming at the interface of each electrode with the conducting liquid. The device comprises means (4, 5) designed so that, when the conducting liquid is flowing through the channel, the flow velocity fields in the diffuse layers facing each electrode are different and so that the convective/diffusive charge equilibria of the electrical double layer at the interface of each electrode are different.
摘要:
The present invention provides a method of measuring the flow rate of an electrically conductive liquid in laminar flow and to an implementation measurement device that are easy to implement, simple to produce and compact. For this purpose, the invention provides a device for measuring the flow rate, comprising: a channel (1); a pair of electrodes (2a-2b); and at least one device (3) for measuring the voltage (V) between the electrodes (2a-2b) of said pair, an electrical double layer forming at the interface of each electrode with the conducting liquid. The device comprises means (4, 5) designed so that, when the conducting liquid is flowing through the channel, the flow velocity fields in the diffuse layers facing each electrode are different and so that the convective/diffusive charge equilibria of the electrical double layer at the interface of each electrode are different.
摘要:
A device for reversibly displacing at least one volume of liquid under the effect of an electrical control, including first electrically conductive device, second electrically conductive device, and a device for inducing a reversible displacement of a volume of liquid, from the first to the second electrically conductive devices, without contact with the conductive device during the displacement.
摘要:
The invention concerns a device for reversibly displacing at least one volume of liquid (10) under the effect of an electrical control, comprising first electrically conductive means (8), second electrically conductive means (4), and means for inducing a reversible displacement of a volume of liquid, from the first to the second electrically conductive means, without contact with said conductive means during the displacement.
摘要:
A device for holding a hydraulic turbomachine in position, the turbomachine comprising a drive shaft along which are distributed turbines designed to rotate the drive shaft when they are immersed in a moving liquid, each turbine comprising drive blades distributed around the drive shaft, the device comprising at least one post extending along at least more than half of the length of the drive shaft and formed of the stacking of at least two post portions, each Post portion being associated with a turbine or with an assembly of adjacent turbines; and a first linking mechanism attached to one of the post portions and to a bearing receiving the drive shaft and arranged between two adjacent turbines; and a second linking mechanism connecting at least one of the posts to the around by a rigid connection with respect to the ground along at least one axis parallel to the liquid motion direction.
摘要:
The device enables a second drop to be mixed in a first drop deposited on an electrically insulating layer of an analysis support, in a viscous liquid environment and to mix the resulting drop. The device comprises at least one injector forming the second drop above the first drop. After formation of the second drop, a voltage impulse is applied between a first electrode, arranged under the electrically insulating layer of the analysis support, underneath the first drop, and a second electrode arranged near the outlet orifice of the injector. The voltage impulse fosters the coalescence phenomenon between the two drops, while preventing risks of contamination of the injector by the reagent of the first drop.
摘要:
The instant disclosure relates to a seat portion structure for a ground-based hydraulic turbine engine. The seat portion structure includes a base plate. A first bearing element is connected to the base plate and contacts the ground. At least three arms are connected to the base plate by a pivoting link. The arms are adapted for pivoting relative to the base plate between a first position, in which the arms are placed near each other, and a second position, in which the arms radially extend from the base plate. A second bearing element is connected to one end of each arm and contacts the ground. A positioning device is adapted for changing the distance between the end of at least one arm and the associated second element. The structure includes, for each arm, a device for locking the arm in the second position.
摘要:
The invention concerns a method for isolating an analyte from an initial sample containing same, on a reactive surface in contact with all or part of the initial sample, characterized in that it comprises the following steps which consist in: 1) forming and/or maintaining a reaction volume entity, comprising an internal liquid medium, corresponding to all or part of the initial sample, the entity including an interface with an external medium, having with the latter a surface tension; 2) applying a temperature difference between at least two thermal points located: a) proximate to and/or b) on the surface and/or c) within said entity, said thermal points being respectively different, in terms of temperature and positioning; 3) fixing the analyte on the reactive surface, positioned on the path of forces convection generated by the temperature difference.
摘要:
The instant disclosure relates to a system for submerging a hydraulic turbine engine, including an assembly including an elongate transverse flow turbine engine; a carriage for receiving said assembly in a prone position; a ship provided with a winch for supporting the carriage on the deck thereof, the bottom side of the turbine engine facing the stern of the ship, the top side being tied to the winch by a pull line; and jacks for righting the carriage and said assembly to a position that is vertically perpendicular to the stern.
摘要:
The invention relates to a turbine engine that includes at least first and second lift turbine stacks with transverse flow. The shafts of adjacent turbines in the first stack are connected by a first coupling device adapted for compensating space misalignments, and the shafts of adjacent turbines in the first stack are connected by a second coupling device adapted for compensating for space misalignments. The turbine engine includes a device for supporting the first and second turbine stacks, which is symmetrical to said plane, and a control device adapted for permanently maintaining the symmetry between the first and second turbine stacks relative to the plane, and for maintaining the rotation speeds of the first and second turbine stacks at equal values in opposite rotation directions.