Asymmetric, double-cone shaped floating anti-wind wave type net cage

Abstract

An asymmetrical dual-conic sinking-floating type netted case able to resist against wind, wave and sea stream is composed of a rigid frame made of the closed hollow tubes and with the upper truncatedconic rigid frame, a net consisting of upper truncated conic net and lower conic net, ropes, and a sinking and floating controller. Said tube has the partitions in it to form several cavities. Each cavity has air valve.

Description

technical field [0001] The invention relates to a breeding net cage, in particular to an asymmetrical double-cone ups and downs anti-wind, wave and current net cage. Background technique [0002] There are mainly three types of large-scale ups and downs anti-wind and wave net cages currently in use. Among them, the UFO-shaped ups and downs and anti-wind and waves net cages have a strong ability to resist flow and deformation, but they are made of steel pipes and high-strength synthetic fiber nets. Due to seawater corrosion and other reasons, the anti-wind and wave performance is poor. The cages imported from the United States have been completely destroyed by wind and waves, and installation and operation are extremely difficult. At present, they are rarely promoted in production; the second type of sinking and floating anti-wind and wave nets In principle, the box is the same as the large floating anti-wind and wave net cage. It has strong anti-wind and wave performance, an...

AI Technical Summary

Problems solved by technology

[0002] There are mainly three types of large-scale ups and downs anti-wind and wave net cages currently in use. Among them, the UFO-shaped ups and downs and anti-wind and waves net cages have a strong ability to resist flow and deformation, but they are made of steel pipes and high-strength synthetic fiber nets. Due to seawater corrosion and other reasons, the anti-wind and wave performance is poor. The cages imported from the United States have been completely destroyed by wind and waves, and installation and operation are extremely difficult. At present, they are rarely promoted in production; the second type of sinking and floating anti-wind and wave nets In principle, the box is the same as the large floating anti-wind and wave net cage. It has strong anti-wind and wave performance, and is easy to install and manage. However, there are two main defects. Severe drift occurs, a large amount of breeding space is lost, and the cost of effective breeding water per unit is greatly increased. It may even cause some cultured species, such as large yellow croakers, to be unable to breed normally. class vulnerable

The third type of large-scale ups and downs anti-wind and wave net cage has strong anti-wind and wave performance, and is more convenient to install and manage. The use of the bottom frame and the variable buoyancy buoy structure located below the center of the bottom frame also has some problems, such as the relative movement between the net and the bottom frame and its sling when the ocean current impacts, which makes the net easy to move. Abrasion requires frequent net replacement, which increases the difficulty of management; the influence of ocean currents on net drift cannot be completely overcome, and net drift will still occur when ocean currents impact; the requirements for bottom frame manufacturing materials are higher, and the manufacturing cost is higher.

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