Inlet connecting piece for an axial-flow compressor

摘要

An inlet connection piece for an axial compressor, particularly for a turbocompressor, includes an inlet housing (1) in which is arranged a bearing housing (2) with a bearing (3), particularly a radial and/or axial bearing, for a rotor. The bearing housing (2) is connected to the inlet housing (1) by an inlet strut (4) which is connected to the inlet housing in a front cross section. The center of the bearing (3) is arranged axially in the flow direction of a fluid to be compressed behind the area center of the front cross section by at least 0.1-times, particularly at least 0.15-times, particularly at least 0.2-times, particularly at least 0.25-times, the chord length of the front cross section. In addition or alternatively, a fluid passage (5, 6) is formed in the inlet strut (4), and at least portions of this fluid passage (5, 6) form an acute angle with a normal plane relative to the longitudinal axis of the inlet connection piece.

主权项

1. An inlet connection piece for an axial compressor comprising:
an inlet housing (1); a bearing housing (2) disposed in said inlet housing (1), both said bearing housing and said inlet housing defining a main fluid passage for a main fluid flow to be compressed in a fluid flow direction; an axial hydrodynamic bearing (3) for a rotor of the axial compressor, said bearing disposed in said bearing housing in a flow direction of the fluid to be compressed, said bearing having a center (3a) and being the first bearing in said fluid flow direction; at least one inlet strut (4) formed as a single body, non-rotatably connected to said inlet housing (1) in a front cross-section having a center and a chord length; said inlet strut directly connecting said bearing housing (2) to said inlet housing (1) in the main fluid passage; and wherein (a) said center (3a) of said bearing (3) in the flow direction is arranged axially within said cord length of said inlet strut and behind said center of said front cross-section by one of at least 0.1-times, at least 0.15-times, at least 0.2-times or at least 0.25-times said chord length of said front section of said inlet strut; and (b) said at least one inlet strut (4) comprising at least one fluid passage (5, 6) defined in and extending through said single body inlet strut, at least a portion of said fluid passage forming an acute angle with a normal plane relative to a longitudinal axis of said inlet connection piece.