Self-reducing flow low-shape change off land deep water net cage

A deep-water cage, low-deformation technology, applied in climate change adaptation, fishing, animal husbandry, etc., to achieve the effects of reducing damage, reducing strength, reducing deformation and volume loss

Active Publication Date: 2008-12-24
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention needs to solve the problem of effectively reducing the deformation of the gravity / lifting offshore deep-water net cage due to the flow velocity and the seawater flow velocity in the box in the sea area environment with a relatively high seawater flow velocity, improving the cage volume retention rate and improving Problems in the growth environment of farmed fish

Method used

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  • Self-reducing flow low-shape change off land deep water net cage
  • Self-reducing flow low-shape change off land deep water net cage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: The invention includes a cylindrical box composed of a double-annular buoyancy frame outer ring 1 and inner ring 2 made of polyolefin pipes, a netting 3 and a vertical force line 4, sinkers 5 at the bottom of the box and mooring Cable 6, add a sinking ring 9 whose diameter is the same as the specification of the inner ring of the water surface buoyancy frame with flexible rope 8 at the bottom of the cage body 7, and add a parallel to parallel at the 1 / 2 place of the depth of the cylindrical casing. The supporting and lifting control ring 10 greater than the diameter of the floating and sinking rings, between the outer ring 1 of the double-annular buoyancy frame of the upper part, the supporting and lifting control ring 10 in the middle, the net cage body bottom outline 7 and the sinking ring 9 at the bottom, with multiple The flexible ropes 11 are positioned and connected according to the equal proportion of the rings, and the nets 12 are installed between ...

Embodiment 2

[0016] Embodiment 2: On the basis of Embodiment 1, the sinking ring 9 at the bottom of the box is removed, and the outer ring 1 of the double-annular buoyancy frame at the upper part, the support and lifting control ring 10 in the middle, and the bottom line 7 of the net cage are connected with a plurality of flexible ropes 11 divide and locate the connection according to the equal proportion of the ring, and directly connect with the sinker 5 at the bottom of the box by the rope 8. The difference in the resulting working principle and beneficial effects is that: the counterweight of the sinker 5 at the bottom increases accordingly, and the bottom of the box body presents a polygon corresponding to the connecting rope 11; it is verified by model tests that when 16 ropes are used, the bottom of the box body presents a polygon shape corresponding to the connection rope 11; It is hexagonal, and the overall shape of the box under high flow rate conditions is basically the same as t...

Embodiment 3

[0017] Embodiment 3: Based on Embodiment 1, the mooring stress point of the cage mooring cable 6 is fixed to the outer ring 1 of the buoyancy frame on the water surface. The difference in the working principle and beneficial effect is that due to the change of the anchoring force point, when the flow rate of the cage is high, compared with the existing circular high-density polyethylene frame gravity / elevating deep-water cage, although there is Good box volume maintenance effect, but the upper buoyancy ring, middle support and lifting control ring, and bottom sinking ring on the upstream side of the net cage all sink significantly, and the overall tilt of the net cage occurs; the beneficial effect compared with Example 1 Because the mooring cables of the cages are fixed to the buoyancy frame on the water surface, it is relatively convenient for the cages to be actually installed at sea.

[0018] The principles and beneficial effects of the specific embodiments of the present i...

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PUM

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Abstract

The invention discloses an automatic reducing low-deformation offshore deep-water cage, relating to a cage for marine aquiculture. The invention is capable to reduce the deformation of the cage and the flow rate of the sea water inside the cage. The invention comprises a buoyancy frame, a cage, a sinking ring, a sinking block and an anchoring rope. A supporting and lifting control ring bigger than the buoyancy frame and the diameter of the sinking ring is arranged at the one second depth of the cylindrical cage; a water inlet and a water outlet are arranged in the pipe wall of the supporting and lifting control ring; a girdle rubber inner bag which regulates the lifting and descending of the cage is arranged in the ring pipe; an air-valve is installed in the rubber inner bag and connected with the air supply by a pressure hose; between the outer ring and the supporting and lifting control ring of the double-ring buoyancy frame, the bottom outline of the cylindrical cage and the bottom sinking ring, a plurality of flexible ropes are located and connected according to the ring at geometric proportion, and a netting is arranged among the connecting ropes of the three rings; and finally, a flexibly connected automatic reducing low-deformation offshore deep-water cage with a cylindrical inside and a two-cone platform outside is formed, the stress point of the anchoring rope of the cage is arranged at the supporting and lifting control ring.

Description

technical field [0001] The invention relates to a marine culture net cage, especially an offshore deep water anti-wind and wave net cage. Background technique [0002] According to the application number 200410075404.3 published on June 14, 2006 by the State Intellectual Property Office of the People's Republic of China, the application number 200410075404.3, the description of the invention title "Asymmetric double-cone sinking and floating anti-wind and wave current net cage", the net cage "1. Effectively overcome the impact of sea currents against wind and waves on the net cage. 2. The double sinking and floating function can greatly simplify management difficulty and labor intensity.", but the manual does not disclose the actual information about whether the net cage is successfully applied. [0003] At present, the representative deep-water cages that have been used in aquaculture production are as follows: [0004] The forms of offshore deep-water anti-wind and wave n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A01K69/00
CPCY02A40/81
Inventor 王鲁民黄洪亮石建高刘永利
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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