Underwater trapezoidal fluid blocking Karman vortex street vibration power generation device

A vibration power generation and bluff body technology, which is applied to electromechanical devices, electrical components, etc., can solve the problems of insufficient sealing of power generation devices, unstable power source, and large loss of mechanical energy, and achieve resistance reduction of incoming flow and enhancement of vortex street periodic force. , good stability

Active Publication Date: 2020-02-11
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention studies and designs an underwater trapezoidal bluff Karman vortex street vibration power generation device to solve the problems of unstable power source, insufficient sealing of the power generation device and large loss of mechanical energy

Method used

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  • Underwater trapezoidal fluid blocking Karman vortex street vibration power generation device
  • Underwater trapezoidal fluid blocking Karman vortex street vibration power generation device
  • Underwater trapezoidal fluid blocking Karman vortex street vibration power generation device

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Such as Figure 1-3 As shown, an underwater trapezoidal bluff body Karman vortex street vibration power generation device includes a bluff body 1, a winding sleeve 2, a magnet sleeve 3, a fixed sleeve 4, a buffer spring 6, a cross bar 7 and a magnet sleeve, and the magnet The cover includes a first magnet cover 5 and a second magnet cover 15 . The bluff body 1 is a hollow structure, the magnet sleeve 3 is fixedly sleeved on the cross bar 7, the fixed sleeve 4 is slidably sleeved on the magnet sleeve 3, and the fixed sleeve 4 and the magnet sleeve 3 can slide relative to each other. The sleeve 4 penetrates the bluff body 1 and is sealed and fixedly connected with the side wall of the bluff body 1, so that the interior of the bluff body 1 forms a closed space, and the second magnet sleeve 15 is provided at the connection between the fixed sleeve 4 and the outer wall of the bluff body 1, The second magnet sleeve 15 is provided with a bar magnet 16 . The winding sleeve 2 ...

Embodiment 2

[0037] The difference from Example 1 is that, as Figure 6 As shown, the four corners of the bluff body 1 are rounded on a trapezoidal basis, and the rounded corners of the short side are larger than the rounded corners of the long side, and the long side of the bluff body 1 is an arc surface. The arc long surface and rounded corners are used to reduce the resistance of incoming flow, reduce the impact of seawater on the bluff body, and improve stability. Enhance the vortex induced force and improve the power generation efficiency. The specific side length of the bluff body 1 can be determined according to actual working conditions.

Embodiment 3

[0039] The difference from Embodiment 1 is that more than two cross bars 7 can be superimposed on the column 10 . Such as Figure 7 As shown, two crossbars 7 are superimposed on the column 10, and each crossbar 7 is provided with a bluff body 1, a winding sleeve 2, a magnet sleeve 3, a fixed sleeve 4, a first magnet sleeve 5, a second The magnet sleeve 15, the buffer spring 6, and the two bluff bodies 1 are connected to the rectifier 11 through wires 14, respectively. The buffer spring 6, the cross bar 7, the magnet sleeve 3, the first magnet sleeve 5, the second magnet sleeve 15 and the fixed sleeve 4 are detachable and replaceable as a whole unit, and the column can be extended to increase the cross bar according to the electricity demand of the object of use. 7, so as to superimpose multiple power generation units to increase power generation.

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PUM

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Abstract

The invention discloses an underwater trapezoidal fluid blocking Karman vortex street vibration power generation device comprising a fluid blocking, a winding sleeve, a magnet sleeve fixing sleeves, magnet sleeves, a buffer spring and a crossbar. The magnet sleeves include a first magnet sleeve and a second magnet sleeve. The magnet sleeves fixedly sleeve on the cross bar. The fixing sleeves slidably sleeve on the magnet sleeves. The fixing sleeves penetrate through the fluid blocking. The two ends of the fixing sleeves are provided with a first magnet sleeve. A second magnet sleeve is arranged at the connection point between the fixing sleeves and the outer wall of the fluid blocking. A strip-shaped magnet is arranged in each magnet sleeve. The winding sleeve is arranged inside the fluidblocking and sleeves on the fixing sleeves. A coil is wound on the winding sleeve. The buffer spring sleeves on the fixing sleeves outside the fluid blocking. The linear generator principle and the magnetic levitation principle are utilized, and the effects of avoiding dynamic sealing and realizing stable power generation are achieved by periodic non-contact sliding of the fluid blocking on the cross bar.

Description

technical field [0001] The invention relates to the technical field of underwater power generation, in particular to an underwater trapezoidal bluff body Karman vortex street vibration power generation device. Background technique [0002] As an important phenomenon in fluid mechanics, Karman vortex street is very common in daily life. On the one hand, in various offshore engineering platforms, the vortex induced vibration caused by Karman vortex street will cause damage to structures such as offshore platforms. People use it more as a destructive factor to avoid, and use vortex cables or other vortex-breaking designs to reduce the impact of vortex street on the structure, in which huge energy is wasted. On the other hand, there is very little research and development of power generation devices based on the Karman vortex street principle, and only a small amount of research has been done in the field of wind power. [0003] In reality, the power supply of ocean platforms ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K35/04
CPCH02K35/04
Inventor 王天霖金帅王传晟张希栋柴冰田涛涛
Owner DALIAN MARITIME UNIVERSITY
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