Automatic flow blocking net system of semi-submersible deep sea aquaculture net cage

Abstract

The invention relates an automatic flow blocking net system of a semi-submersible deep sea aquaculture net cage. The system comprises a power element, a driving roller assembly arranged on the upper portion of the net cage and driven by the power element, a driven roller assembly which is arranged on the upper portion of the net cage and corresponds to the driving roller assembly, a guide roller assembly oppositely arranged on the lower portion of the net cage, a reversing gear arranged between the driving roller assembly and the driven roller assembly, and a flow blocking net wound by the driving roller assembly and guided and pulled to the driven roller assembly by the guide roller assembly. According to the flow blocking net system, the flow blocking net forms an electric double-roller tensioning type roller shutter flow blocking net, the flow blocking net can be installed on the outer sides of outer vertical nets on the two sides opposite to the reciprocating flow direction of the net cage, and when it is monitored that the sea level reciprocating flow velocity is higher than a critical value, the net descending depth is decided according to the sea flow velocity water layer depth change gradient curve. The lowering depth of the incident flow side roller shutter flow blocking net is controlled to ensure that the ocean current flow speed in the net cage is in the optimal range, and adverse effects on fish bodies are avoided.

Description

technical field [0001] The invention relates to an additional device for a deep sea culture net cage, in particular to a semi-submersible deep sea culture net cage automatic flow-blocking net system. Background technique [0002] At present, after the deep-sea culture net cages are placed, the fish in the cages are often not suitable for survival due to the excessive flow velocity. Once the flow velocity exceeds the swimming speed of the fish, the fish will be blown to the net on the side of the flow by the ocean current, and it will last for a long time. High flow rates can kill fish. Contents of the invention [0003] Based on this, it is necessary to provide a semi-submersible deep sea culture net cage automatic flow retaining net system that can effectively improve the flow velocity in the net cage. [0004] A semi-submersible deep-sea culture net cage automatic flow-blocking net system, comprising: a power element, an active roller assembly arranged on the upper part...

AI Technical Summary

Problems solved by technology

[0002] At present, after the net cages for deep sea culture are placed, the fish in the net cages are often not suitable for survival due to the excessive flow velocity. Once the flow velocity exceeds the swimming speed of the fish, the fish will be blown to the net on the side of the flow by the ocean current, and it will last for a long time. High flow rates can kill fish

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