Draw bail of vane wheel and high-speed rotation shaft of high-speed centrifugal compression device

Abstract

The invention relates to a draw bail of a vane wheel and a high-speed rotation shaft of a high-speed centrifugal compression device. The invention ensures that the high-speed rotation shaft and the vane wheel are not deformed and the assembly and disassembly are convenient. The draw bail comprises the high-speed rotation shaft and the vane wheel and is characterized in that a stretching shaft penetrates through a centre hole of the vane wheel, one end of the stretching shaft is connected with the inner screwed hole on the terminal of the high-speed rotation shaft by screw thread, a gland nut is sheathed on the other end of the stretching shaft, the end surface is fixedly connected with an outrigger shaft neck of the vane wheel, and the end surface of one end of the gland nut is fixedly connected with the end surface of the vane wheel.

Description

(1) Technical field [0001] The invention relates to the technical field of compression equipment, in particular to a connection structure between an impeller and a high-speed rotating shaft on a high-speed centrifugal compression equipment. (2) Background technology [0002] Existing high-speed centrifugal compression equipment includes a centrifugal compressor and a centrifugal blower, and the shrink-fit method is used to directly assemble the impeller on the end of the high-speed rotating shaft. This structure usually needs to choose a larger interference to ensure that the impeller does not loosen during high-speed rotation. For this reason, the impeller or high-speed rotating shaft must be heated to a higher temperature before assembly. The high-temperature shrink-fit assembly of this large interference design causes a large deformation of the high-speed shaft, especially the impeller after assembly. The deformation of the impeller will reduce the aerodynamic performance...

AI Technical Summary

Problems solved by technology

The high-temperature shrink-fit assembly of this large interference design causes a large deformation of the high-speed shaft, especially the impeller after assembly. The deformation of the impeller will reduce the aerodynamic performance of the impeller, and the deformation of the high-speed shaft will even affect the impeller. In addition, when the impeller is disassembled and reinstalled, the dynamic balance state of the entire high-speed rotor is often destroyed due to lack of circumferential positioning.

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