Radial compressor stage
a compressor stage and radial technology, applied in the direction of motors, liquid fuel engines, non-positive displacement pumps, etc., can solve the problems of damage to the radial compressor stage, three-dimensional and unsteady flow phenomena, etc., and achieve the effect of easy and reliable counteraction
Inactive Publication Date: 2016-03-03
MAN ENERGY SOLUTIONS SA
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- Description
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- Application Information
AI Technical Summary
Benefits of technology
The invention can reduce vibration excitation in radial compressor stages by easily and reliably counteracting asynchronous excitations of open impellers, which can lead to improved performance and reliability.
Problems solved by technology
During the operation of a radial compressor, the radial compressor stages are exposed to mechanical excitations and oscillations that can cause damage to the radial compressor stage, in particular to the impeller blades of the impeller of the radial compressor stage.
In particular, three-dimensional and unsteady flow phenomena are generated through the interaction of rotating and stationary components.
Method used
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Embodiment Construction
[0026]The present invention relates to a radial compressor with at least one radial compressor stage.
[0027]FIG. 1 shows a detail of a radial compressor stage according to the invention in meridional section according to a first aspect of the invention, and FIG. 2 shows an axial section through the radial compressor stage of FIG. 1.
[0028]The radial compressor stage of FIG. 1 comprises an impeller 10 with multiple impeller blades 11 on the rotor side. The impeller 10 rotates relative to the stator 12. The stator 12 can be a housing or a stator ring or the like. The impeller blades 11 are positioned in an impeller flow channel 13 bounded by a hub contour 14 on the rotor side and a stator contour 15. Each impeller blade 12 comprises a flow inlet edge 16 and a flow outlet edge 17. Between the flow inlet edge 16 and the flow outlet edge 17 of each impeller blade 11 a pressure side, a suction side and radially outside on the impeller blade 11 an outer surface 18 of the respective impeller ...
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A radial compressor stage includes an impeller with multiple impeller blades on the rotor side and a diffuser with multiple guide blades on the stator side positioned downstream of the impeller. Between the impeller and the stator an impeller side gap is formed. Flow inlet edges of the guide blades on the stator side lie on a first circle contour such that the flow inlet edges of all guide blades on the stator side have an identical spacing to the flow inlet edges of the respective adjacent guide blades. Flow outlet edges of the guide blades on the stator side lie on a second circle contour such that in at least one first circumferential position the flow outlet edge of the respective guide blade on the stator side has a spacing to the flow outlet edge of at least one adjacent guide blade other than in second circumferential positions.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a radial compressor stage for a radial compressor.[0003]2. Description of the Related Art[0004]From DE 195 02 808 C2 the fundamental construction of a radial compressor having at least one radial compressor stage is known. Accordingly, it is disclosed in this prior art that the or each radial compressor stage of a radial compressor comprises an impeller rotating with respect to a stator, wherein the impeller comprises a hub and multiple impeller blades on the rotor side. Each impeller blade of the impeller comprises a flow inlet edge and a flow outlet edge. Between the flow inlet edge and the flow outlet edge of each impeller blade a suction side, a pressure side, and an outer surface facing the stator extends. The outer surface of the respective impeller blade borders the stator and serves for sealing relative to the stator. Such an impeller of a radial compressor, in which the outer surfaces o...
Claims
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IPC IPC(8): F04D29/44F04D17/10F04D29/28
CPCF04D17/10F04D29/284F04D29/668F04D29/666F04D29/444F04D29/44
Inventor MOKULYS, THOMASJENNY, PHILIPPSEEBASS-LINGGI, CHRISTOFBIDAUT, YVESSCHNEIDER, SAMUEL
Owner MAN ENERGY SOLUTIONS SA