Impeller rotation gap detection device

Abstract

The invention provides an impeller rotation gap detection device, and belongs to the field of water jet propellers. The impeller rotation gap detection device comprises a screw rod assembly, an impeller connection assembly, a support base assembly and a loading assembly, wherein the screw rod assembly comprises a screw rod; the impeller connecting assembly comprises a transition flange, and the transition flange is coaxially and fixedly connected to one end of the screw rod; the supporting base assembly comprises a supporting base plate, a detection window, a through hole and an annular spigotare formed in the supporting base plate, the screw rod is coaxially located in the through hole, and the detection window is located between the through hole and the annular spigot; and the loading assembly comprises a threaded sleeve, and the threaded sleeve sleeves the screw rod. During detection, by rotating the threaded sleeve, a hub of an impeller is pulled in the axial direction by means ofthe screw rod, and the gap between the impeller and an impeller cover is measured through the detection window in the supporting base plate by means of a feeler gauge and other gap measuring tools; and the impeller rotation gap detection device is conductive to guiding the assembly of the impeller and the impeller cover, so that an enough gap can be formed between the impeller and the impeller cover during actual operation, and scraping is avoided.

Description

technical field [0001] The disclosure relates to the field of water jet propellers, in particular to a detection device for impeller rotation clearance. Background technique [0002] Propellers are an important part of a ship's power system. The propeller usually includes an impeller and an impeller cover, and the impeller is coaxially located in the impeller cover, and the rotation of the impeller can form a jet of water in the impeller cover, thereby providing power for the ship. [0003] The impeller will be subject to a large axial force during the rotation (mainly the reaction force of the water flow on the impeller), and due to the axial clearance of the bearing installed on the impeller, the impeller will produce axial force under the action of the axial force. Move so that the gap between the impeller and the impeller housing is reduced. [0004] During the rotation of the impeller, there will be a certain axial displacement under the action of the axial force. Si...

AI Technical Summary

Problems solved by technology

Since the gap between the impeller and the impeller cover is usually very small, and the impeller cover is generally conical, the impeller produces axial displacement under the action of the axial force, which may cause contact between the impeller and the impeller cover, resulting in scratches

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