Flow-induced vibration power generating device based on deformable double-layer permeable box-type support

Abstract

The invention discloses a flow-induced vibration power generating device based on deformable double-layer permeable box-type support; the flow-induced vibration power generating device based on deformable double-layer permeable box-type support comprises a column and a power generator system; a double-layer permeable box-type support is arranged below the column; the double-layer permeable box-type support consists of an upper platform, a middle platform, a lower platform, and elastic connecting plates with through holes; the elastic connecting plates are correspondingly fixed on two sides of the upper platform and the middle platform by staggered bolts, so as to form an upper layer of permeable box-type support; the elastic connecting plates are correspondingly fixed on the other two sides of the middle platform and the lower platform by staggered bolts, so as to form the lower layer of permeable box-type support; the lower platform is fixedly connected with a supporting pile which is penetrated into the sea bed; the power generator system comprises two groups of permanent magnetic linear power generators and linear magnetic rods inserted into coils of the permanent magnetic linear power generators. The flow-induced vibration power generating device based on deformable double-layer permeable box-type support has the advantages of high in conversion coefficient, simple in structure, strong in reliability, free of sliding / rotating nodes, low cost, efficient, long service life, and the like, without being limited to directions of the incoming flow.

Description

technical field [0001] The invention relates to the field of new energy power generation equipment and fluid mechanics, and more specifically relates to a flow-induced vibration power generation device based on a deformable double-layer hollow box-shaped support. Background technique [0002] Now with the rapid development of the global economy, fossil fuel resources are increasingly depleted, and the environmental pollution caused by them is becoming more and more serious. The development and utilization of clean and renewable energy has become a strategic choice for various countries in the world today. Among the many clean energy sources, ocean current energy has attracted more and more attention from the scientific and engineering communities for its efficient development and utilization due to its large scale, stable flow, and wide distribution. According to statistics, the world's available ocean current energy is as high as 5 million megawatts. China is also rich in ...

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Problems solved by technology

However, the disadvantages of the VIVACE sea current energy utilization device are also very obvious: 1) There are too many mechanical transmission parts, and the frictional resistance of the transmission parts increases due to the remains of marine organisms attached to the mechanical transmission parts, which reduces the energy of the VIVACE sea current energy utilization device Conversion factor; 2) Underwater anticorrosion is more difficult. Due to the use of mechanical transmission, simple anticorrosion coating protection cannot be used at the sliding / rotating connection nodes of components; 3) The adaptability to the direction of ocean current is poor, and it is only suitable for fixed direction of incoming flow 4) Additional support structure, VIVACE sea current energy utilization device module needs two additional columns to support the columns suspended on it, so the cost is high, and the columns have a hindering effect on the ocean current, reducing the The energy conversion coefficient of the VIVACE ocean current energy utilization device; 5) The enhancement effect of the cylinder's downstream vibration on the cross-flow vibration cannot be used. According to the theory of cylindrical vortex-induced vibration, the downstream vibration of the cylinder has an enhancement effect on its cross-flow vibration, and the maximum increase It can reach 50%. Due to the limitation of the installation method of the VIVACE ocean current energy utilization device, the cylinder can only vibrate in the transverse flow direction, resulting in a small cylinder amplitude and low energy conversion coefficient

These defects limit the economy and practicability of the VIVACE ocean current energy utilization device

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