An artificial upwelling device and method using air injection type for oscillating water column wave energy taking into account the function of floating breakwater

Abstract

The invention discloses an oscillating water column wave energy utilization gas injection artificial upwelling device with a floating breakwater function and a method and belong s to the field of marine engineering. The oscillating water column wave energy utilization gas injection artificial upwelling device with the floating breakwater function is characterized by being composed of a wave energy conversion module, a gas injection module, an anchor chain and a sinker; the wave energy conversion module is suspended on the sea surface, and the lower end of the wave energy conversion module is connected with the sinker by the anchor chain; and the upper part of the gas injection module is connected to the wave energy conversion module, and the lower part of the gas injection module is constrained by a tightening device so as to be attached on a backwave side anchor chain. The method for realizing the oscillating water column wave energy utilization gas injection artificial upwelling device with the floating breakwater function comprises the following steps: device mounting, a process of converting wave energy into air kinetic energy, a process of supplementing air into an air chamber, a process of generating artificial upwelling by gas injection, circulating and repeating. The wave energy is converted and utilized by using a back-bent-tube oscillating water column technology, the artificial upwelling is formed by a gas injection artificial upwelling technology, the device has the advantages of high wave conversion rate, obvious deep-layer seawater lifting effect, durability, good reliability, low engineering investment cost, energy saving, environment friendliness and the like and can be concurrently used as a floating breakwater.

Description

technical field [0001] The invention relates to the field of marine engineering, in particular to an oscillating water column wave energy utilization gas injection type artificial upwelling device and method taking into account the function of a floating breakwater. Background technique [0002] Nutrients such as nitrate and phosphate in seawater are essential nutrients for the growth and reproduction of basic producers such as phytoplankton in marine ecosystems. Nutrient-rich seawater is rich in primary productivity, which in turn promotes the abundance of marine biological resources such as fish. In the deep seawater below the euphotic layer of the ocean, the nutrient content shows a significant increase trend with the increase of seawater depth. In contrast, the nutrient concentration of seawater in the euphotic zone of the ocean is relatively low. The flow of high-concentration nutrient salt water masses in deep seawater rising to the near surface of the ocean is calle...

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Problems solved by technology

[0004] Among the related technical solutions involving gas-injection artificial upwelling, the design of gas-injection artificial upwelling devices is mostly limited to the test stage, and most of its energy is supplied by external power supply to drive the pump, and the cost of putting into the project is relatively high. The scheme pays attention to the use of wave force to provide power support for the device, but most of its structures are relatively complex, and the durability and reliability of the wave energy conversion module are poor, and the wave capture efficiency is low. Considering the effect of the device itself to block and eliminate waves, the economic benefits are limited in actual use, and the high cost makes it difficult to put into use in the project.

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