摘要:
Provided is a rotary machine including: a shaft that rotates; a disc that has a substantially cylindrical hub fitted into the shaft and is provided so as to widen outward in a radial direction from a front end to a rear end of the hub; and an impeller having a plurality of blades provided on a surface of the disc. The hub has a tight fit section having an internal radius that is smaller than a radius of the shaft, and a loose fit section having an internal radius that is greater than the internal radius of the tight fit section. The loose fit section is provided on the front end side of the hub with respect to the tight fit section.
摘要:
Die Erfindung betrifft eine Vakuumpumpe mit wenigstens einer Gaseintrittsöffnung und wenigstens einer Gasaustrittsöffnung, wobei die Vakuumpumpe wenigstens eine Rotorwelle aufweist, an der wenigstens ein Rotor mit rotierenden pumpaktiven Bauteilen, welche stehenden pumpaktiven Bauteilen gegenüber stehen, mit wenigstens einem in axialer Richtung zentral in oder an der Rotorwelle angeordneten Befestigungselement befestigt ist, wobei der wenigstens eine Rotor und die Rotorwelle zusätzlich zu dem wenigstens einen Befestigungselement eine Verdrehsicherung aufweisen.
摘要:
A turbocharger is provided having a connector (3) for connecting an impeller (1) to a shaft (2). The impeller has a shaft-side hub extension (H) with a central recess. The impeller is formed of a material having a greater coefficient of thermal expansion than the material of the shaft. The connector is inserted into the recess to frictionally connect an outwardly facing surface (14) of the connector with a radially inner surface of the hub extension. The connector has a threaded portion (11) carrying a thread which screws onto a corresponding threaded portion (7) of the shaft, such that the connector provides a rotationally fixed connection between the impeller and the shaft. The connector is formed of a material having a coefficient of thermal expansion which is greater than the coefficient of thermal expansion of the material of the shaft.
摘要:
An axial flow compressor 10 includes: a rotor 31 having a rotor vane 34; a first pressing member 41 joined to one end surface of the rotor 31; a second pressing member 42 joined to the other end surface of the rotor 31; a rotor shaft portion 46 penetrating the first pressing member 41, the rotor 31 and the second pressing member 42; and a nut 43 which fixes the first pressing member 41 and the second pressing member 42 on the rotor shaft portion 46 with the first pressing member 41 and the second pressing member 42 holding the rotor 31 between. The rotor shaft portion 46 is made of a material having a lower linear expansion coefficient than that of a material making at least a part of the rotor 31. The material making at least a part of the rotor 31 may be aluminum or aluminum alloy.
摘要:
The invention relates to a rotor disk (2) for a turbo machine, in particular a radial turbo machine, having a rotor disk end face (2.2) and a shrink band (2.3) connected thereto to be shrunk onto a rotor (1) of the turbo machine, wherein the rotor disk comprises a circumferential groove (3) between the rotor disk end face and the shrink band connected thereto.
摘要:
An exemplary assembly includes a compressor wheel (340,440,940), the compressor wheel comprising: titanium; a proximate end; a distal end; an axis of rotation; a z-plane positioned between the proximate end (359) and the distal end (358), and a joint interface (360,460,960) having an axis coincident with the axis of rotation and an end surface positioned between the z-plane and the distal end; and a compressor shaft positioned in the joint and having a distal end that does not extend beyond the z-plane.
摘要:
The invention relates to a geared compressor rotor (2) for cold gas applications having a pinion shaft (16) having a gear tooth segment (18) having gear teeth (14), at least one wheel (6) having a wheel hub (8) and a sealing segment (10) arranged between the gear tooth segment (14) and the wheel hub (8) that bears a seal (12). Said geared compressor rotor (2) also has high strength even in low temperature applications when the wheel hub (8) and the sealing segment (10) form a common, one-piece, connected region (4) made of a first material and the gear tooth segment (18) is produced from a second material.