Net cage mooring anchor leg with power buffering function

Abstract

The invention discloses a net cage mooring anchor leg with a power buffering function. The net cage mooring anchor leg comprises a seabed anchor chain used for being connected with an anchor, an underwater anchor chain, one or more floaters, a floating body and a mooring rope used for being connected with a net cage, wherein the seabed anchor chain is arranged on a seabed; the floating body and the mooring rope float on the sea surface; the lower end of the underwater anchor chain is connected with the seabed anchor chain; the upper end of the underwater anchor chain is connected with the floating body; the mooring rope is connected with the upper end of the underwater anchor chain; the floaters are connected to the underwater anchor chain at intervals, so that the anchor chain sections, located between every two adjacent floaters, between the floater at the uppermost part and the floating body as well as between the floater at the lowermost part and the seabed anchor chain, of the underwater anchor chain are in a catenary shape. The multiple anchor chain sections in the catenary shape play a power buffering role on the floating body, so that displacement of the net cage is limited, the occupied area of a net cage culture sea area is greatly saved, stability of a net cage system is improved, stress on the net cage is reduced, and safety of a net cage floating pipe framework is improved.

Description

technical field [0001] The invention relates to a net cage mooring anchor leg with dynamic buffering function. Background technique [0002] At present, most of the net cage mooring systems are multi-point mooring, and generally 6 to 8 anchor points are selected to ensure that the net cages are located in the designated area when they are subjected to a non-directional environment. Such as figure 1 As shown, the existing mooring system adopts a combination of a section of anchor chain 2 and a section of anchor rope 9 to form the anchor legs directly tied to the floating pipe frame of the cage. The principle of determining the total length of the anchor legs is to satisfy the anchor rope in the In the tense state, an angle of 17-25° with the sea level is sufficient. In this way, 6 to 8 long anchor legs will be symmetrically arranged around the net cage as the center of the circle, and at the same time, when the net cage encounters the resultant force F of the environment, a...

AI Technical Summary

Problems solved by technology

When the resultant force F of the environment increases again, the displacement A and the length C will continue to increase, and the anchor chain 2 on the seabed will gradually be unable to provide effective friction. The symmetrical mooring arrangement fails

Not only that, but in this case, when the force on the anchor legs increases, due to the action force and reaction force, the force directly suffered by the floating tube frame of the cage also increases, and the angle of force is changing all the time. The floating tube frame system of the tank is subjected to an alternating external force, which accelerates the damage at the mooring point of the frame

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