A small ship propeller thrust measuring device

Abstract

The invention discloses a propeller thrust measuring device for a small boat. The device comprises a guide rail, a sealing box, a watertight assembly, a measuring module and a propeller; the sealing box is connected to the guide rail; the measuring module is mounted in the sealing box and is connected with the propeller through a connecting shaft; one end of the connecting shaft, connected with the measuring module is positioned in the sealing box, and while one end of the connecting shaft, connected with the propeller is positioned at the outside of the sealing box and externally covered with the watertight assembly; the guide rail comprises a horizontal guide rail which is arranged in parallel to the level, and a vertical guide rail which is arranged vertical to the level; the vertical guide rail is fixedly connected with the horizontal guide rail through a guide rail connecting part; a sliding block is arranged on the vertical guide rail and is in sliding match with the vertical guide rail; a locking device for locking the sliding block on the vertical guide rail is arranged on the sliding block; the sealing box is fixed on the sliding block. With the adoption of the device, the waterlogging depth of the propeller can be adjusted to measure the change on the thrust at different water depth; meanwhile, the structure is simple, the design is reasonable, and the mounting and dismounting are convenient.

Description

technical field [0001] The invention relates to the field of small ship propulsion system testing, in particular to a small ship propeller thrust measuring device. Background technique [0002] The thrust test of the propeller model is the performance test of the propeller. Its purpose is: 1. To analyze various efficiency components of ship propulsion with the results of self-propulsion test and open water test, and to estimate the actual propulsion performance of the ship; 2. To analyze and compare various According to the pros and cons of the propeller design scheme, choose the design scheme with the best performance; 3. Draw the test results into a map for design use; 4. According to the test results, verify the propeller theory and analyze the influence of geometric parameters on the propeller performance. [0003] At present, the common methods used to obtain the thrust and torque of small propeller engines are theoretical calculation or six-component balance measuremen...

AI Technical Summary

Problems solved by technology

Due to the presence of propellers in the measurement process, the modeling and simulation process for the entire measurement work is more complicated and the reliability of the final measurement results is low

In addition, the current measurement equipment is not tested under water immersion conditions. At the same time, most of the current measurement equipment is complex in structure and expensive, and is not suitable for water immersion tests. Thrust values ​​under different immersion depth conditions

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