Chain-structured electric net for blocking whitebait

A whitebait blocking and chain technology, applied in the field of chain structure power grid, can solve the problems of small individual, escape, and small whitebait, and achieve the effects of good effect, convenient use and simple structure.

Inactive Publication Date: 2004-11-03
YUNNAN UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, because the life cycle of whitebait is short, the individual is small, and the activity time is only at midnight or before dawn, it is inconvenient to understand the habits of whitebait
In addition, the whitebait is small, so it will escape in large numbers during the flooding period and when the water is released, causing economic losses

Method used

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  • Chain-structured electric net for blocking whitebait

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Embodiment Construction

[0009] The present invention is implemented in Shendai Reservoir, Mianyang City, Sichuan Province. The installation method is hanging type, and the installation position (water area cross section) is 165 meters × 15 meters. There are 77 electrodes arranged in the grid. The electric intensity field at 3 meters on the side of the electrode array facing the water is 20v / m, and the water flow velocity at the grid electrode array is 0.03.5m / s. Three pulse machines are used in parallel to supply power. The output voltage of each pulse machine is 1170 volts, current It is 3000 amps, and the pulse frequency is selected as 20, 38, 50HZ respectively.

[0010] Practice has shown that the power grid can intercept 60%-80% of whitebait over 3cm, and the use effect is good.

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Abstract

The present invention belongs to the field of electric energy utilization, and the chain electric net for intercepting whitebait consists of electric pulse generator and electrode array. The electrode array includes middle power lines, rear positive electrodes and front positive and negative electrodes arranged alternately, with the amount of the electrodes being determined by the size of water surface. The electric net has electric field strength not lower than 20 V/m and pulse frequency of 20-50 Hz, and the water flow rate at the electric net is 0.01-0.05 m/s. The electric net may be in embedded one or suspended one.

Description

Technical field: [0001] The invention relates to a chain structure power grid for blocking whitebait, and belongs to the technical field of electric energy utilization. Background technique: [0002] Because of its high nutritional value, Taihu whitebait is bred in lakes and reservoirs suitable for the growth of whitebait in the country. However, due to the short life cycle of whitebait, small individuals, and activity time only before midnight or dawn, it is inconvenient to understand the habits of whitebait. In addition, the individuals of whitebait are small, and they will escape in large numbers during the flooding period and when the water is released, causing economic losses. Invention content: [0003] The purpose of the present invention is to provide a chain structure grid that can effectively block whitebait. [0004] The inventor's repeated experiments have found that the normal swimming speed of whitebait is 6cm / s, and the swimming speed when frightened is 30...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 包德修平慧敏张晋
Owner YUNNAN UNIV
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