Cantilever winch towing hydrodynamic measuring system and its measuring method

A measurement system, cantilever type technology, applied in the cantilever winch towing hydrodynamic measurement system and its measurement field, can solve the problems of large occupied area, high construction cost, inconvenient installation, etc., and achieve small occupied area and small projected area , easy-to-control effects

Active Publication Date: 2020-09-22
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional towing test often uses the towing pool of the ship towing test. Its construction cost is high, it occupies a large area, and it is inconvenient to install. It is not specially designed for measuring the hydrodynamic characteristics of underwater submersibles. After the installation is completed, it is often permanently arranged and cannot be disassembled.

Method used

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  • Cantilever winch towing hydrodynamic measuring system and its measuring method
  • Cantilever winch towing hydrodynamic measuring system and its measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1-Figure 2 As shown, the hydrodynamic measurement system towed by a cantilever winch includes a fixed platform 1, and a track mechanism 2 is fixed on the fixed platform 1 along the length direction of the fixed platform 1, and the track mechanism 2 is provided with a The dragging trolley 3 matched with the mechanism 2, the driving device 4 that drives the dragging trolley 3 to move along the track mechanism 2 is also fixed on the fixed platform 1, and the driving device 4 is provided with the The speed measuring device 5 for dragging the moving speed of the trolley;

[0035] The top of the drag trolley 3 is fixed with a cantilever 6, the extension direction of the cantilever 6 is perpendicular to the extension direction of the track mechanism 2, and the bottom of one end of the cantilever 6 is fixed with a crossbeam 61, and the extension direction of the crossbeam is Parallel to the extension direction of the track mechanism 2;

[0036]One end of the b...

Embodiment 2

[0044] The method for measuring hydrodynamic forces towed by a cantilever winch comprises the following steps:

[0045] S1. Put the underwater diving body model 7 in the hydrodynamic measurement system towed by the cantilever winch into the water;

[0046] S2. Set a predetermined speed or acceleration on the frequency converter 46;

[0047] S3, run the winch 41, measure the rotation speed of the reel 45 through the encoder 51, and then obtain the running speed of the towing trolley 3, measure the underwater submersible body model through the force sensor 8 Set the force value of 7;

[0048] S4, disassembling the underwater diving body model 7 from the bottom of the detachable rod 65;

[0049] S5. Re-run the winch 41 without changing the parameters of the frequency converter 46, and re-measure a group of new force values ​​through the force sensor 8;

[0050] S6. Subtracting the new force value from the force value to obtain the hydrodynamic force experienced by the underwat...

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Abstract

The invention discloses a cantilevered winch towing hydrodynamic measuring system and a measuring method thereof. The cantilevered winch towing hydrodynamic measuring system comprises a fixed platform. The fixed platform is fixedly provided with a rail mechanism that is provided with a towing trolley in fit with the rail mechanism. The fixed platform is also fixedly provided with a driving devicefor driving the movement of the towing trolley along the rail mechanism. The driving device is provided with a speed measuring device capable of obtaining the moving speed of the towing trolley. The top of the towing trolley is fixedly provided with a cantilever, of which the one end is connected to the top end of a connecting rod through a rotating bearing assembly. The bottom end of the connecting rod is fixedly connected with the top end of a detachable rod through a connecting flange. The bottom end of the detachable rod is fixedly connected with an underwater submerged body model. The connecting rod is provided with a force sensor. The cantilevered winch towing hydrodynamic measuring system of the invention adopts a cantilevered towing trolley, and the cantilevered structure reduces the wall surface effect and has small projection area in a pool, convenience of performing other tests, small floor space and can be disassembled after the tests are completed, thereby saving space.

Description

technical field [0001] The invention relates to a hydrodynamic measurement system and a measurement method, in particular to a hydrodynamic measurement system and a measurement method of a cantilever winch towing. Background technique [0002] With the continuous development of the marine economy, more underwater engineering operations are required, and the operating water depth continues to increase. Underwater vehicles such as underwater robots (ROVs) and autonomous robots (AUVs) are becoming more and more popular because they can replace humans in the deep sea to complete observation and engineering tasks. With continuous development, research on underwater submersibles is also ongoing, and the hydrodynamic characteristics of underwater submersibles are an important part of it. [0003] The hydrodynamic characteristics of underwater submerged body are the basis of underwater submerged body control. In order to obtain the hydrodynamic characteristics of the underwater sub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 张增猛宋男陈英龙弓永军
Owner DALIAN MARITIME UNIVERSITY
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