Pneumatic wave power generation device and double-body pneumatic wave power generation ship

Abstract

The invention provides a pneumatic wave power generation device, and relates to the field of ocean wave energy utilization. The device comprises a buoyancy compartment, a seawater flow channel, a flow guide plate, an air flow channel, an air turbine and a generator, the buoyancy compartment is arranged on a horizontal section of the seawater flow channel composed of a vertical section flow channel and a horizontal section flow channel which are communicated with each other, and the air flow channel is arranged at the top of the vertical section flow channel and communicated with the vertical section flow channel; a seawater flow channel opening is formed in the end, away from the vertical section flow channel, of the horizontal section flow channel. The air turbine is connected with the air flow channel and the generator. The width of the two sides of the end, close to the vertical section flow channel, of the buoyancy cabin exceeds the width of the seawater flow channel to form a double-wing end, and the width of the end, close to the seawater flow channel opening, of the buoyancy cabin is gradually narrowed till a tip is formed. The invention further provides a double-body pneumatic wave power generation ship comprising the device. The device provided by the invention can realize high-efficiency broadband energy harvesting, and the power generation ship can realize mooring-free automatic position keeping in deep and far sea.

Description

technical field [0001] The present disclosure relates to the technical field of ocean wave energy utilization, in particular to a pneumatic wave power generation device and a twin-body pneumatic wave power generation vessel. Background technique [0002] At present, in the face of the strong demand for offshore energy, the use of wave energy to generate electricity according to local conditions is one of the best solutions. In the process of moving towards the deep sea, if a nearby wave power generation device is equipped, a convenient and economical power supply can be realized, which greatly alleviates the pain point of limited endurance and improves the self-sustainability and reliability of marine equipment. [0003] However, there are still several deficiencies in the existing wave power generation devices, which lead to their slow progress in practical application, and cannot achieve industrialized operation at present. These deficiencies mainly include: [0004] (1) ...

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Problems solved by technology

[0005] (2) In the deep sea application scenario, the unpowered wave energy power generation device needs to be dragged into place by the operation and maintenance ship, and the cost of each dragging and maintenance operation is expensive

At the same time, when the water depth in the sea area is relatively large (above 1,000 meters), it is difficult to moor through the anchor chain, and the unpowered device is bound to drift with the current, and it is difficult to maintain the work in the designated area

[0006] (3) Under extreme sea conditions, the floating wave power generation device may roll, causing the ship to capsize and the equipment to be damaged

[0007] (4) The cost performance of the impulsive air turbine used for wave energy conversion is still low, which is reflected in: or the I-type channel axial flow impulsive air turbine with simple structure, small size and low efficiency , or a U-shaped channel impulsive air turbine with high efficiency and bulky size

Traditional air turbines are not competitive due to the relatively low wave energy density in my country's sea areas and the high cost of wave energy utilization. The invention of a new impulsive turbine with a simple structure, small size, and high efficiency is very important for improving cost performance and moving towards commercialization. necessary

[0008] (5) The size and direction of ocean waves change at any time, making the output of wave power generation unstable, manifested as the superposition of short-term scale changes and long-term scale changes, and large-scale access to the power grid will produce a certain degree of Shock and Instability

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