An adjustable propeller hub dynamic sealing machine test device and method

Abstract

The invention belongs to the field of propeller test technologies and particularly discloses an adjustable propeller hub dynamic sealing overall test device and method. The device comprises a tool blade flange component, a measurement component and a hydraulic system which communicates with a propeller hub, wherein the tool blade flange component comprises a tool blade flange, a blade sealing ringand a crank pin disk; the hydraulic system comprises an oil hydraulic cylinder, wherein one end of the oil hydraulic cylinder communicates with an oil tank through a three-position five-way electromagnetic reversing valve, and the other end of the oil hydraulic cylinder communicates with the crank pin disk, the tool blade flange and the blade sealing ring; and the measurement component comprisesat least one dial gage which is attracted to the tool blade flange and pressed on the outer circumference of the propeller hub. The test method comprises a propeller hub assembling clearance measurement and adjustment test and a propeller hub dynamic sealing performance test. According to the overall test device, the actual clearance between propeller hub combination surfaces is adjusted on the custom tool blade flange and crank pin disk, and the sealing performance of the propeller hub combination surfaces under the clearance is tested through a pumping pressure experiment.

Description

technical field [0001] The invention belongs to the technical field of propeller testing, and more specifically relates to a test device and method for an adjustable propeller hub dynamic sealing machine. Background technique [0002] Controllable pitch propeller (CPP: controllable pitch propeller) is a key component for ship propellers and offshore positioning platforms to maintain high precision and smooth operation. The adjustable pitch adjustment mechanism is composed of propeller hub mechanism, propeller, crank pin plate, slider, piston rod and other parts. Under the action of hydraulic drive, the + linear motion of the piston rod is converted into the rotation of the crank pin plate, thereby Drive the propeller to swing back and forth on the propeller hub, and then adjust the pitch of the propeller to realize the front and reverse control of the adjustable propeller and propeller, so as to change the thrust and torque of the propeller of the ship to adapt to the forwar...

AI Technical Summary

Problems solved by technology

[0003] The dynamic sealing part of the propeller hub of the adjustable propeller bears the complex alternating load of seawater. Once leakage occurs and fails, the whole machine will be shut down and returned to the factory for maintenance. The maintenance cost and the loss caused by the downtime are huge. It is very necessary to test the dynamic seal

In the existing technology and related tests, the performance test of the dynamic seal of the controllable propeller hub is carried out on a single component, which cannot be carried out on the assembled machine platform, and the end face clearance of the hub seal cannot be adjusted along with the test , the dynamic sealing performance tested by the test is difficult to meet the actual design and use requirements

[0004] Therefore, there is an urgent need in this field to propose a test device and method for the dynamic sealing of the adjustable propeller hub to solve the problem that the prior art cannot be carried out on the assembled complete machine platform, and the gap between the end face of the propeller hub seal cannot be carried out along with the test. adjustment problem

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