Sulzer Management Ag

Sulzer Pumpen Ag

Thomas Felix

Simon Gassmann

Karel De Raeve

Thomas Welschinger

Paul Meuter

Benedikt Trottmann

Matthew Bourne

Marcelo Inforsati

A method for operating a pump, for conveying a fluid from a low-pressure side to a high-pressure side of the pump includes determining a current rate of change of pump vibrations and comparing the current rate of change with a limit for the rate of change or determining a current vibration of the pump and comparing the current vibration with a vibration amplitude limit for the vibration, storing the limit for the rate of change or the vibration amplitude limit in a surge controller, providing a control signal when the current rate of change reaches the limit or when the current vibration reaches the vibration amplitude limit, and changing a control variable of the pump by the control signal, such that the vibration is reduced and an unstable operating state of the pump is avoided.

Method for operating a pump

A process fluid lubricated pump includes a pump having a pump shaft extending from a drive end to a non-drive end to rotate about an axial direction, a first pump section having a first set of impellers fixedly mounted on the pump shaft to increase the pressure of the process fluid, a drive to exert a torque on the drive end of the pump shaft to drive the rotation of the pump shaft, a first balance drum fixedly connected to the pump shaft between the pump and the drive end of the pump shaft, the first balance drum defining a first front side facing the pump and a first back side, and a second balance drum fixedly connected to the pump shaft between the pump and the non-drive end of the pump shaft, the second balance drum defining a second front side facing the pump and a second back side.

Process fluid lubricated pump and seawater injection system

A rotary machine for conveying a fluid includes a drive unit configured to drive a shaft, an impeller arranged at the shaft, and configured to convey the fluid, at least one mechanical seal configured to seal the shaft, a first and a second heat exchange system configured to cool or heat the mechanical seal, the first heat exchange system configured for direct application of a fluid heat carrier at the mechanical seal and the second heat exchange system comprising a heat exchange jacket capable of having a fluid heat carrier flow therethrough without direct contact with the mechanical seal, the first and the second heat exchange systems forming a common heat exchange system in which a common fluid heat carrier is capable of being circulated, and a fan wheel configured to circulate the common fluid heat carrier in the common heat exchange system.

Rotary machine and method for the heat exchange in a rotary machine

A pump includes a housing having an inlet and an outlet configured to convey fluid, an impeller configured to convey the fluid from the inlet to the outlet, the impeller being arranged on a rotatable shaft, and a balance drum configured to relieve axial thrust. The balance drum includes a rotor rotationally fixedly connected to the shaft, the rotor having a high and low pressure sides, a stator stationary with respect to the housing, a relief passage extending between the rotor and the stator from the high pressure side up to the low pressure side of the rotor, a return passage connecting the low pressure side of the rotor to the inlet. An intermediate passage opens into the relief passage between the high pressure side and the low pressure side of the rotor. A blocking member is configured to influence the flow through the intermediate passage.

Pump for the conveyance of a fluid with varying viscosity

A bearing pad, including a pad body () and a tilting element (), for a support body () of a bearing arrangement () for taking up an axial thrust, characterized in that the tilting element () is provided in an elongated recess () of the pad body () extending in a radial direction such that a contact body () of the tilting element () extending in the direction of the recess () projecting beyond a surface of the pad body () and the pad body () has a higher deformability than the tilting element ().

Bearing pad, support body, bearing arrangement and pump

A method for the pressure regulation of a barrier fluid in a pumping device () is introduced, which includes a pump unit () with a shaft () and a pump housing (), a drive unit (), which is mechanically coupled to the pump unit and a shaft sealing arrangement (), which seals the pump housing () relative to the shaft (). In the method, a pumping medium is pumped by means of the pumping device () and the barrier fluid is conveyed via a feed line () to a common housing (), in which the pump unit () and the drive unit () are arranged, in order to prevent a leakage of the pumping medium out of the pump housing (). Additionally, the pressure of the supplied barrier fluid is increased when a pressure difference between the pressure of the supplied barrier fluid and a detected pressure of the pumping medium in the pump unit () falls below a pre-determined value. For this purpose a pressure reducing valve () for the differential-pressure is opened and the feed line is connected through to a source () for the barrier fluid via the open valve, the pressure of which lies by more than the pre-determined value above the pressure of the pumping medium in the pump unit.

Growing community of inventors

Zumikon, Switzerland

Thomas Felix