Levitronix Gmbh

Other

Natale Barletta

Reto Sch&ouml;b

Reto Schöb

Reto Theodor Schob

Thomas Gempp

Mario Haefliger

J&uuml;rgen Hahn

Alexander Schmid

Samuel Schneider

Thomas Eberle

Mathias Hoffmann

Mario Häfliger

Jürgen Hahn

Giampiero Foiera

A device for changing a pump unit of a centrifugal pump is proposed. The centrifugal pump includes the pump unit and a stator extending in an axial direction. A cup-shaped recess is provided at the first axial end of the stator into which the pump unit is capable of being inserted. The device includes an actuating device with which a mechanical force is capable of being exerted on the pump unit. The mechanical force acts in the axial direction and is directed in such a way that it separates the pump unit from the stator in the axial direction.

Device for changing a pump unit of a centrifugal pump and centrifugal pump

A pumping device includes a single-use device and a reusable device. The single-use device is to be inserted into the reusable device and includes two pump units in series, one behind the other. Each pump unit includes a rotor for a bearingless motor, and can be magnetically levitated and driven without contact for rotation about an axial direction. The reusable device includes a stator for each rotor which form an electromagnetic rotary drive for rotating the rotor about the axial direction. Each stator is a bearing and drive stator with which the rotor can be magnetically driven and levitated without contact with respect to the stator. An independent control device is provided for each stator, and can independently activate a respective stator.

Pumping device, a single-use device and a method for operating a pumping device

An ultrasonic measuring device for measuring a fluid flowing in a pipe includes a housing and transducers. The housing receives and fixes the pipe, so that the fluid can flow through a central recess in a flow direction. The ultrasonic transducers emit and receive ultrasonic signals. Two first ultrasonic transducers are arranged laterally on a first side of the central recess, and two second ultrasonic transducers are arranged on a second side of the central recess. The second side is opposed to the first side, so that the recess is located between the first and the second ultrasonic transducers, and the ultrasonic transducers are arranged and aligned so that one of the first ultrasonic transducers emits a first measuring signal to one of the second ultrasonic transducers obliquely to the flow direction and receive a second measuring signal emitted by the second ultrasonic transducer obliquely to the flow direction.

Ultrasonic measuring device having transducers housed in a clamping device

A flowmeter having an inlet through which the medium can flow into a measurement zone and having an outlet through which the medium can flow out, wherein a damping device is provided in front of the inlet, and has a first mass which can be flowed through having a first inlet and a first outlet for the medium, a second mass which can be flowed through having a second inlet and a second outlet for the medium as well as a flow connection which is capable of vibration and which connects the first outlet to the second inlet, wherein a minimal flow cross-section (d) of the flow connection is smaller than the inlet cross-section (E) at the first inlet or smaller than the outlet cross-section (A) at the second outlet.

Flowmeter comprising a damping device

In the method for the determination of the pressure (p) in and/or of the through-flow (Q) of a liquid through a pump having at least one magnetic bearing for the axial journaling of the pump rotor ( ), axial forces act on the rotor ( ) of the pump during operation. The axial forces which act on the rotor are utilised for the determination of the pressure (p) and/or of the through-flow (Q).

Method for the determination of the pressure in and/or of the through-flow through a pump

A sensor arrangement in an electromagnetic rotary drive which is designed as a bearing-free motor with a magnetically journalled, permanent magnetic rotor ( ) and a stator ( ), the sensor arrangement serving for the determination of the direction of the rotor magnetization and/or of the axial position of the rotor ( ), comprises at least two sensors (S , S , S ) for the determination of a magnetic flux. The two sensors (S , S , S ) are arranged in such a manner with respect to the rotor ( ) that partial fluxes of that magnetic field which the stray field of the permanent magnetic rotor ( ) produces can be determined with them. Furthermore, a method for the determination of the direction of the rotor magnetization is proposed.

Sensor arrangement in an electromagnetic rotary drive and a method for the operation of a rotary drive of this kind

In a method for the determination of the radial position of a permanent magnetic rotor (,) in an electromagnetic rotary drive which is designed as a bearing-free motor with a stator (,) and the magnetically journalled rotor (,) the magnetic flux which is produced by the rotor (,) is determined by means of sensors (LS,, LS,, LS,) in the space between the rotor (,) and the stator (,) at least at two different measurement locations. The radial position of the rotor (,) is established with the help of the magnetic flux which is determined at the measurement locations and with the help of the magnetic flux which results at the measurement locations when the rotor (,) is arranged so as to be centered. Furthermore, a sensor arrangement for the determination of the radial position of the permanent magnetic rotor is proposed.

Method and sensor arrangement for the determination of the radial position of a permanent magnetic rotor

A sensor arrangement in an electromagnetic rotary drive which is designed as a bearing-free motor with a magnetically journalled, permanent magnetic rotor (,) and a stator (,), said sensor arrangement serving for the determination of the direction of the rotor magnetisation and/or of the axial position of the rotor (,), comprises at least two sensors (S,, S,, S,) for the determination of a magnetic flux. The two sensors (S,, S,, S,) are arranged in such a manner with respect to the rotor (,) that partial fluxes of that magnetic field which the stray field of the permanent magnetic rotor (,) produces can be determined with them. Furthermore, a method for the determination of the direction of the rotor magnetisation is proposed.

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Zurich, Switzerland

Natale Barletta