Modular space truss structure deep sea net cage

Abstract

The invention discloses a modular space truss structure deep sea net cage. The cage is characterized in that: a net cage frame is of a full-closed cage-shaped space truss structure, is constructed andexpanded in a modular mode through truss nodes and truss rod pieces, is a multi-layer truss in the internal and external direction and comprises a buoyancy adjustable layer and a buoyancy non-adjustable layer; each truss node comprises a buoyancy adjustable node and a buoyancy non-adjustable mechanical node, the buoyancy adjustable node is a thin-wall hollow shell which is expanded relative to the truss rod piece and is used for generating buoyancy required by the modular space truss structure deep sea net cage in work and used for adjusting the snorkeling, the bearing capacity and the underwater posture of the modular space truss structure deep sea net cage; and the breeding net is a totally-closed breeding net. A multi-layer totally-closed cage-shaped space dense truss structure comprising the buoyancy adjustable layer and the buoyancy non-adjustable layer is adopted as a modular structure main body of the deep sea net cage, and the two prominent problems of stormy wave resistance and benefit generation in deep sea cultivation are solved.

Description

Technical field [0001] The invention belongs to the field of marine engineering devices, especially the deep sea aquaculture equipment, and particularly relates to a modular space truss structure deep sea cage. Background technique [0002] Marine aquaculture in my country is currently mainly concentrated in tidal flats, harbors and shallow waters outside the bay. The excessive development of coastal marine aquaculture has made the carrying capacity of resources and environment reach or close to the upper limit. In some areas, the bay water quality is eutrophication, sediments are high, and biological pollution is more serious. Therefore, many regions regard the development of far-reaching sea aquaculture as an important means to build a modern marine industry system. The demand for expanding far-reaching sea aquaculture space is becoming stronger. It is necessary to rely on modern engineering technology and information technology to promote the expansion of marine aquaculture fr...

AI Technical Summary

Problems solved by technology

In the development of marine aquaculture in my country, high-density polyethylene (HDPE) floating cages have become the leading equipment, but the problem of wind and wave resistance has not been fundamentally resolved

In September 2011, two typhoons "Nasha" and "Nig" landed in Hainan one after another. The deep-water aquaculture cages in Lingao County, Hainan Province were almost wiped out, and they could not resist the super typhoon at all.

[0012] The deformation of deep-water cages due to ocean currents cannot be ignored. In the case of ordinary gravity cages with a water flow of 1 m / s, the volume loss rate of the cages can be as high as 80%, which greatly compresses the aquaculture water body and is not conducive to fish growth.

[0013] Net cleaning and replacement mainly rely on manual operation, the underwater operation is difficult, and the anti-fouling technical requirements are high

[0014] The stress response of fish in aquaculture is also prominent. The environment of deep-sea aquaculture is more complex, with many and uncertain factors such as wind, air pressure, water flow, temperature, light, and salinity. It is a natural action to overcome the stress response, and lacks the technical means and ability to adapt and adjust to the environment. Therefore, the stress response of fish is more serious and uncontrollable, resulting in slow growth and development of fish, decreased reproductive ability, and low immune function. resulting in increased morbidity and even sudden death

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