Device for extending the performances of a radial compressor
AssigneeAsea Brown Boveri AG
InventorKarl-Heinz Rohne
Life of this patent
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Abstract
In a radial compressor the device for extending the performance at small throughputs by stabilizing the impeller flow in the inlet region comprises a recess (5) in the form of a groove which is oriented in the circumferential direction of the inlet duct (6) of the compressor, whereas in the flow direction it extends with a given axial width to the impeller (2). A stabilization ring (3) is integrated into said recess (5), being arranged in front of the impeller (2) and outside the principal flow (7) of the transported medium. A plurality of blades (4,4a), which are placed on the outer circumference of the stabilization ring (3), are in turn anchored to the inner contour of the recess (5).
Claims15
A compressor arrangement extending the performance of a radial compressor at small throughputs in the inlet region of a radial flow impeller of a radial compressor comprising a recess which is oriented in the circumferential direction of an inlet duct of the radial compressor and which extends upstream from an inlet aperture of the radial flow impeller, a stabilization ring being integrated in said recess and arranged in front of the radial flow impeller and outside the principal flow of the transported medium, an inlet edge of said radial flow impeller being located downstream of an end edge of the stabilization ring and upstream of an end edge of said recess, said stabilization ring carrying on its outside circumference a number of blades which are themselves anchored to an inner contour of the recess.
A compressor arrangement extending the performance of a radial compressor at small throughputs in the inlet region of an impeller of the compressor comprising a recess which is oriented in the circumferential direction of an inlet duct of the radial compressor and which extends upstream from an inlet aperture of the impeller, a stabilization ring being integrated in said recess and arranged in front of the impeller and outside the principal flow of the transported medium, said impeller positioned to overlap an edge of the recess farthest in the flow direction to form an overlap dimension, said overlap dimension being in the ratio 0-0.06 to an outside diameter of the inlet aperture of the impeller, said stabilization ring carrying on its outside circumference a number of blades which are themselves anchored to an inner contour of the recess.
Dependencies are inferred from the claim text.