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Broadband VIV energy collecting device based on variable mass and efficiency verification method thereof

A technology of energy collection and quality change, which is applied in electromechanical devices, mechanical energy control, electrical components, etc., can solve the problems of lack of effective verification methods for energy collection, difficult quantitative evaluation of energy collection efficiency of devices, and low energy collection efficiency. The energy effect and collection efficiency are continuously stable, the power generation effect is increased, and the structural design is reasonable and simple.

Pending Publication Date: 2021-10-29
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the current vortex-induced vibration energy harvesting device changes in flow rate, the locking interval changes accordingly, resulting in the problem of low energy collection efficiency, and thus lacks effective verification methods for related energy collection conditions, resulting in difficulties in the energy collection efficiency of the device after it is put into use. Realize quantitative evaluation

Method used

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  • Broadband VIV energy collecting device based on variable mass and efficiency verification method thereof
  • Broadband VIV energy collecting device based on variable mass and efficiency verification method thereof
  • Broadband VIV energy collecting device based on variable mass and efficiency verification method thereof

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specific Embodiment approach 1

[0033] Specific implementation mode one: as Figure 1 to Figure 12 As shown, this specific embodiment adopts the following technical solutions: this embodiment includes a stand 1, an electromagnetic variable mass device 2, an electromagnetic generating mechanism 3, a plurality of galloping mechanisms 4 and a plurality of upper elastic members 5, and the stand 1 It is a 匚-shaped frame; the electromagnetic variable mass device 2 includes a cover 2-1, an upper cylinder 2-2, a longitudinal connecting column 2-3 and a moving bar 2-4, and the longitudinal connecting column 2-3 is vertically arranged on the stand Above 1, a plurality of galloping mechanisms 4 are arranged on both sides of the platform 1, an upper cylinder 2-2 is coaxially arranged on the top of the longitudinal connecting column 2-3, and the top of the upper cylinder 2-2 is detachably connected with a Covering 2-1, several electromagnetic coils 7 are arranged in the upper cylinder 2-2, an inner cavity is formed betwe...

specific Embodiment approach 2

[0036] Specific embodiment 2: This embodiment is a further limitation of specific implementation 1. The platform 1 includes a base 1-1 and two T-shaped columns 1-2, the base 1-1 is horizontally arranged, and the two T-shaped columns 1-2 2 vertically arranged side by side at both ends of the base 1-1; the longitudinal connecting column 2-3 is located between two T-shaped columns 1-2, and the bottom end of each T-shaped column 1-2 is fixedly connected with the base 1-1 , each T-shaped column 1-2 top ends are respectively provided with a galloping mechanism 4 .

specific Embodiment approach 3

[0037] Specific Embodiment 3: This embodiment is a further limitation of specific implementation 1 or 2. The upper cylinder body 2-2 is equipped with two connecting pieces 6, and the upper cylinder body 2-2 is arranged between the two connecting pieces 6. Each A connecting piece 6 includes a connecting block 6-1 and a first beam 6-2, one end of the connecting block 6-1 is fixedly connected to the outer wall of the upper cylinder 2-2, and the other end of the connecting block 6-1 is processed with a first Through hole 19, one end of the first light column 6-2 is fixedly connected to one of the T-shaped columns 1-2 in the two T-shaped columns 1-2, and the other end of the first light column 6-2 passes through the first through hole 19 is fixedly connected with the other T-shaped column 1-2 of the two T-shaped columns 1-2, and the upper cylinder 2-2 reciprocates along the length direction of the first optical column 6-2 through the connecting block 6-1.

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Abstract

The invention discloses a broadband VIV energy collecting device based on variable mass and an efficiency verification method thereof. According to an existing vortex-induced vibration energy collecting device, a locking interval changes along with the change of the flow velocity, and consequently the energy collecting efficiency is low. According to the invention, a plurality of galloping mechanisms are arranged on the two sides of a rack correspondingly, an upper cylinder is coaxially arranged at the top end of a longitudinal connecting column, a sealing cover is detachably connected to the top end of the upper cylinder, an electromagnetic coil is arranged in the upper cylinder, the upper cylinder is connected with the two ends of the rack through an upper elastic piece, a moving strip is arranged at the lower end of the longitudinal connecting column, and the input end of an electromagnetic power generation mechanism is connected with the moving strip. According to the efficiency verification method, firstly, a galloping energy vibration equation model is established, an ordinary differential equation set is solved based on a finite difference method, calculation and analysis are carried out based on analysis data according to basic data of the broadband VIV energy collecting device, a theoretical index value is obtained, and the theoretical index value is compared with an actual index value of the broadband VIV energy collecting device based on the variable mass, so that the sensitivity verification process is realized.

Description

Technical field: [0001] The invention specifically relates to a variable-mass-based broadband VIV energy harvesting device and an efficiency verification method thereof. Background technique: [0002] With the consumption of fossil energy, the problem of environmental pollution is increasing day by day. The development and use of renewable energy has become an alternative. Due to its high energy density, abundant reserves and renewable characteristics, ocean current energy is currently a hot field of renewable energy utilization. Vortex-induced vibration (VIV) is a common phenomenon in the field of marine engineering. Under the action of incoming flow, vortices are alternately shed on the surface of the structure, and the vortex acts on the cylinder to cause structural vibration. However, when the current vortex-induced vibration energy harvesting device changes in flow rate, the locking interval changes accordingly, resulting in the problem of low energy collection effici...

Claims

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Application Information

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IPC IPC(8): H02K7/18F03B13/00
CPCH02K7/1853F03B13/00F05B2220/706
Inventor 高云刘磊柴盛林潘港辉姜泽成
Owner HARBIN INST OF TECH AT WEIHAI
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