Impeller-shaft connecting device of rotary machine

Abstract

The invention discloses an impeller-shaft connecting device of a rotary machine. The impeller-shaft connecting device comprises an impeller body, an impeller rod shaft, a bolt assembly and a locatingpin. The impeller rod shaft is arranged at the top end of the impeller body and is connected with the impeller body through the bolt assembly. An impeller nut is arranged at the end, away from the impeller rod shaft, of the bolt assembly, and a spacing plate is arranged at the end, close to the impeller body, of the impeller nut. A reinforcing layer is arranged in the side wall of the impeller body. The outer side wall of the impeller body is coated with an anti-corrosion layer, and an impeller protection cover is arranged on the outer side of the impeller body. According to the impeller-shaftconnecting device, through the arrangement of the impeller body, the impeller rod shaft and the bolt assembly, the impeller body and the impeller rod shaft can be fixedly connected conveniently through the bolt assembly, the traditional interference assembly manner depending on heating is abandoned, connection of the impeller body and the impeller rod shaft can be achieved under the natural atmospheric environment, resources can be saved easily, and energy saving and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of connection devices, in particular to a rotary machine impeller-shaft connection device. Background technique [0002] Rotating machinery refers to machinery that mainly relies on rotating actions to complete specific functions. Typical rotating machinery includes steam turbines, gas turbines, centrifugal and axial compressors, fans, pumps, water turbines, generators and aeroengines, etc., which are widely used in electric power, In petrochemical, metallurgy, aerospace and other departments, the connection method between the impeller and the shaft of the rotating machinery is crucial to the safety of the unit. For large equipment such as nuclear main pumps, the reliability of the impeller connection determines whether the core heat can be removed, and The quick disassembly of the impeller can ensure the personal health of maintenance personnel to the greatest extent. For heavy-duty gas turbines and water t...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art that it is not easy to ensure the size of the shaft sleeve and to manufacture the tools used for corresponding processing, and propose a steam flow distributor for the double condensing steam system of the steam turbine

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