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Pulse current fish repelling device

A pulse current and fish repelling technology, which is applied in animal repellents, applications, animal husbandry, etc., can solve the problems of no research on electric fish driving, and achieve the effects of small environmental factors, avoiding device failure, and strong adaptability

Inactive Publication Date: 2019-08-16
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is almost no research on electric fish in China

Method used

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  • Pulse current fish repelling device
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  • Pulse current fish repelling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Selection of power supply mode for the device: for the electric fish drive device in front of the dam, the local grid can be used for power supply; for the electric fish drive device on the wild stream, the power supply mode combining generator and new energy can be used.

[0044] Bottom electrode 19 material selection: in seawater with slow flow, Monel alloy can be selected; in seawater with flow velocity greater than 1.5 m / s, stainless steel 304, 316, etc. can be used; titanium and Hastelloy C-276 can be used, which is suitable for static and Flowing seawater has extremely high corrosion resistance; aluminum bronze can also be used, which has certain corrosion resistance in seawater of various flow rates and can prevent marine organisms from adhering.

Embodiment 2

[0046] Such as figure 2 As shown, the step electric field is adopted, and the electric field intensity is gradually increased in the direction of the fish entering the device, so that the individual fish can escape when they reach the unbearable electric field in the process of advancing, and also give the fish a reasonable escape distance. The device does not design a single electric field based on the highest electric field capacity of the group. In order to ensure the fish repelling effect, many fish are stunned, nor is it based on the average bearing capacity of the group, so that some fish cannot be expelled.

Embodiment 3

[0048] Such as image 3 As shown, the top-flowing fish enter the electric field along the direction of the electric field line ( image 3 state A), and the frightened fish will find that they turn nearly a right angle after encountering strong electric stimulation ( image 3 After the B state), the electrical stimulation they receive is greatly reduced, and they tend to stay in this direction. At this time, their speed is perpendicular to the direction of the water flow, and they will be impacted by the water flow out of the electric field ( image 3 From state B to state C), the device realizes the fish driving function.

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PUM

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Abstract

The invention discloses a pulse current fish repelling device which comprises a water body data collecting device, a control system, a pulse generator, an exciter, a transmitter and a sinking bottom electrode, wherein the control system comprises a switching power supply, a power supply unit, a microcontroller, a water body data display unit, a frequency regulator and a pulse width regulator. Thepulse current fish repelling device is capable of repelling different types of fish by utilizing a stepped electric field generated by the sinking bottom electrode, and can also be applied to different water bodies. By using the stepped electric field, the electric field intensity in the direction in which the fish enters the device is gradually increased, so that the fish individual escapes whenthe fish enters an unacceptable electric field during the advancement process, and a reasonable escape distance is also provided for the fish.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a pulse current fish driving device. Background technique [0002] The number of water conservancy and hydropower projects in my country is increasing day by day. While making great contributions to social development, it also destroys the original ecological connectivity of rivers and has a certain impact on the ecological environment. In the South-to-North Water Diversion Project, water will be diverted from major reservoirs and rivers and many pump stations will be installed. Fish can easily get close to the pump ports and be sucked into the pumps, causing equipment failure and causing fish deaths and injuries. In the context of the vigorous development of nuclear power, there are more and more nuclear power plants, which need to pump a large amount of sea and river water as cooling water during their operation, and they will also face the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01M29/24
CPCA01M29/24
Inventor 宋宝钢张成荣
Owner CHINA THREE GORGES UNIV
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