Cold-wave-proof mariculture net cage and cold-proof method thereof

Abstract

The invention belongs to the field of mariculture, in particular to a cold-wave-proof mariculture net cage. The net cage comprises a net cage and a floating plate which are connected to each other, the net cage and the floating plate are connected through a limiting mechanism and a rope, a wing plate is arranged at the top end of the floating plate, the bottom end of the wing plate is connected tothe floating plate through a first spring, and the wing plate is connected to an air blowing unit capable of blowing air to the net cage through vertical movement of the wing plate. A power supply isnot needed, the conditions of insufficient energy and the like caused by electric leakage due to long-time placement of the power supply are avoided, the arrival of cold waves can be automatically judged according to the characteristics of the cold waves, then the net cage sinks into the water bottom after the cold waves arrive, and meanwhile heat preservation of fish schools is achieved by usingthe characteristics that: the specific heat capacity of water is large and the temperature change under the sea is small when the cold waves arrive.

Description

technical field [0001] The invention belongs to the field of marine aquaculture, and in particular relates to a cold-tide-proof marine aquaculture net cage and a cold-proof method thereof. Background technique [0002] At present, one of the most common methods in the marine aquaculture industry is cage culture. Cage culture can not only ensure that the cultured fish can move in a certain space, but also facilitate the management of fish schools, and at the same time ensure that the internal environment of the cage is in harmony with the outside world. The ocean is in a connected state, which can simulate the ecological environment of the ocean to a large extent, thereby ensuring that the fish in the cage can grow rapidly. [0003] But at present, for marine cage culture, the coming of cold wave is a major test. As a kind of natural disaster, the standard in Bohai Sea and other coastal areas is to reduce the temperature by more than 10 degrees Celsius within 48 hours, and th...

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Problems solved by technology

[0003] But at present, for marine cage culture, the coming of cold wave is a major test. As a kind of natural disaster, the standard in Bohai Sea and other coastal areas is to reduce the temperature by more than 10 degrees Celsius within 48 hours, and the minimum temperature is 4 degrees Celsius. Below, and the arrival of the cold wave will often cause strong winds above grade 7 on the sea surface, and due to the large specific heat capacity of water, the temperature difference between day and night in the sea is usually small, and the arrival of the cold wave will make the temperature difference change greatly. It is difficult for fish schools to adapt to such a large temperature difference and low temperature environment, resulting in mass death of fish schools, resulting in serious losses in cage culture

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