Method for manufacturing and hanging suspending net for sea trial of antifouling paint of netting cage covering

Abstract

The invention relates to a method for manufacturing and hanging a suspending net for a sea trial of netting cage antifouling paint. PPR (pentatricopeptide repeats) pipes, ropes, a net and stones are adopted in the method, wherein the PPR pipes are processed into a square frame; a rope basket is arranged outside the frame; two PPR pipes are inserted into the rope basket and are respectively placed outside the upper and lower sides of the frame; according to a hanging ratio of 0.707, steels are filled in the net; after being filled with the steels, the net is assembled on the frame; sinking blocks are bonded at two ends of the PPR pipe outside the lower side of the frame; eight strands of high-strength fishing polyethylene ropes penetrate through the PPR pipe outside the upper border of the frame; two rope ends are bonded on a net cage floating pipe; the linear distance between two bonded points is 0.5 meter; the length of the ropes between the bonded points of the net cage floating pipe and the outside edge of the PPR pipe outside the upper border of the frame is 1.5 meters; the center of the upper border of the frame and the net cage floating pipe are also bonded through the eight strands of high-strength fishing polyethylene ropes; and the distance between the suspending nets for the trial is 2.5 meters.

Description

technical field [0001] The invention relates to a hanging net for the sea test of an antifouling paint for a net cage and net clothing in the field of net cage engineering. Background technique [0002] Marine fouling organisms, also known as marine fouling organisms, are animals, plants and microorganisms that grow on the surface of marine facilities. Due to the smooth water flow and sufficient bait in the cage culture sea area, the larvae and spores of fouling organisms float and swim to the cage facilities and then attach and settle down, resulting in a large number of marine fouling organisms attached to the synthetic fiber fishing nets used in the cages. For this reason, people use antifouling coatings for nets to carry out antifouling treatment on synthetic fiber fishing nets in cages, and form a protective layer around the net materials through the releasable antifouling agent in the antifouling coatings for nets to prevent or reduce pollution. Marine fouling organis...

AI Technical Summary

Problems solved by technology

But a large amount of production practice of existing net cage project shows, (1) adopt iron frame to make the method for hanging net clothing framework iron frame can take place serious corrosion after the comprehensive factors such as seawater, sunshine and high temperature influence; (2) adopt arbitrary The method of assembling the net with shrinkage coefficient will affect the weight of the net, so that the weight of the net with different shrinkage coefficients on the same iron frame will have a difference, which further makes the weight of the hanging net after the test It is not comparable; (3) a three-strand rope is hung on the cage frame with any height and spacing, which not only makes the hanging nets located in different water layers with different distributions of marine fouling organisms, which further makes the hanging nets The antifouling effect is relatively incomparable, and a rope used for hanging the net is broken, causing frequent loss of the hanging net used in the sea test of the antifouling coating for the cage net, which directly leads to the failure of the test or delays the best test time; The rope used for hanging the net adopts a three-strand rope, which has a great rotatability, which affects the stability of the hanging net; hanging the net at any distance between different hanging nets will directly affect the fair evaluation of the antifouling coating for a piece of hanging net, and the antifouling coating for the release type As far as coatings are concerned, the antifouling function of adjacent meshes with too close spacing between hanging nets will directly affect each other.

In the field of prior art, the randomness of making and hanging nets for the sea test of anti-fouling coatings for net cages and nets affects the fair evaluation of anti-fouling coatings for nets and nets, and the netting tests lack scientificity, fairness and safety. sex

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