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Oscillating hydrofoil drive system for water tunnel experiments

A driving system and experimental technology, applied in the fields of marine ship engineering, water conservancy and hydropower engineering, can solve problems such as the inability of the driving system to meet the requirements, and achieve the effect of simple structure, solving sealing problems and saving space.

Inactive Publication Date: 2014-01-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an oscillating hydrofoil drive system that can be used for water tunnel experiments in order to solve the problem that the existing drive system cannot meet the requirements of water tunnel experiments

Method used

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  • Oscillating hydrofoil drive system for water tunnel experiments
  • Oscillating hydrofoil drive system for water tunnel experiments
  • Oscillating hydrofoil drive system for water tunnel experiments

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Embodiment 1

[0030] An oscillating hydrofoil drive system for water tunnel experiments, including a bracket system, a power device and a transmission mechanism, such as figure 1 shown;

[0031] Described bracket system is made up of supporting plate 5 and strut 6;

[0032] The power unit includes a stepper motor 8 and a speed reducer 7;

[0033] The transmission mechanism includes an inner rod 1, a sleeve nut 2, a sleeve 4, an inner rod bearing 9 and a sheet 10, such as figure 2 shown;

[0034] The inner rod 1 is a cylindrical straight rod, and the diameter of the cylinder is divided into three steps along the axial direction, and is defined as the first level, the second level and the third level of the inner rod in order of diameter from small to large; the inner rod There is a hole in the center of the third stage, the shape of the hole is consistent with the output shaft of the reducer 7, so as to achieve the power transmission effect; in actual operation, it is difficult to direct...

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Abstract

The invention relates to an oscillating hydrofoil drive system for water tunnel experiments. The system mainly comprises a support system, a power device, a fluid mechanical model, a transmission mechanism and a seal system, wherein the power device is connected with the fluid mechanical model through the transmission mechanism and the seal system. The oscillating speed and angle of the fluid mechanical model is quantitatively and accurately controlled to provide the design of fluid mechanical structure with theoretical basis and the exploration on dynamic flow mechanism and fluid-solid interaction mechanism with reliable analytic experimental data. The system is simple and compact in structure, space saving, easy to move and demount, low in production cost, and applicable to small-scale experimental researches such as water tunnel experiments; the sealing problem of the transmission device can be solved effectively; system failure caused by drive system parts contacting with water and decreased water tunnel experiment performance caused by water leakage of a water tunnel experiment segment are avoided.

Description

technical field [0001] The invention relates to an oscillating hydrofoil drive system for water tunnel experiments, belonging to the technical fields of water conservancy and hydropower engineering and ocean ship engineering. Background technique [0002] In the field of aerospace, in order to avoid dynamic stall, structural flutter and resonance, the dynamic characteristics of oscillating airfoils have been paid more and more attention. In the study of hydraulic machinery, the additional force generated by the rotation and the disturbance of the static and dynamic components have an important impact on the turbulent flow process, the development of the boundary layer, and the temporal and spatial distribution of the flow structure. It is the focus and difficulty of the research. In the transient process of propeller, turbo pump, hydraulic turbine start-up and shutdown, runaway, load increase and decrease, etc., the transient flow in the transient process will change the ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B1/02
Inventor 王国玉吴钦黄彪刘涛涛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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