Gravity type net cage design method based on balance weight and cable distribution evaluation

Abstract

The invention discloses a gravity type net cage design method based on balance weights and cable distribution evaluation, belongs to the field of deep sea gravity type net cage design, and relates to the volume loss of a net cage, the maximum tension of a cable and the movement and deformation of a floating ring. The mutual influence relation among all parts of the gravity type net cage is considered. The method is used for evaluating the influence of net cage bottom balance weights and cable distribution form on the net cage wave current resistance. According to the technical scheme, the method comprises the following steps that establishing a plurality of numerical models of net cages with different balance weights and different cable distributions; based on the cold water mass sea condition, establishing a wave flow model, and obtaining deformation, stress and displacement of each part of the net cage; analyzing the volume loss rate of the net cages and the movement condition of the floating ring under different balance weight conditions; analyzing the influence of ocean current speed and direction change on the maximum tension of the cable under different cable distribution forms; and obtaining an optimal design scheme of the balance weights and cable distribution patterns of the net cages.

Description

technical field [0001] The invention relates to the field of deep-sea gravity net cage design, in particular to a gravity net cage design method based on counterweight and cable distribution evaluation. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The hydrodynamic response of aquaculture cages is a key issue in the development of aquaculture cages. At present, the density of offshore aquaculture is generally higher than the environmental capacity of sea areas, causing problems such as discontinuous water flow and cross-pollution of water bodies. Therefore, the global aquaculture industry has a tendency to shift to the deep sea. Deep-sea aquaculture is faced with more severe sea conditions, which requires deep-sea cages to have stronger anti-current capabilities. This increases the difficulty and cost of deep-sea gravity cage design. In respo...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a gravity type net cage design method based on counterweight and cable distribution evaluation, which involves the volume loss of the net cage, the maximum tension of the cable, and the movement of the floating ring and deformation, taking into account the mutual influence between the various parts of the gravity cage, it is possible to evaluate the influence of the counterweight at the bottom of the cage and the distribution of cables on the anti-wave current ability of the cage, and then propose a design scheme for the cage, which solves the problem of only Aiming at the problem that the accuracy of the research results is low due to the single part of the cage, which cannot be used for the design of the cage

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