Fish swimming capability testing device and method

A technology for ability testing and fish, which is applied in the field of fish swimming ability testing equipment, can solve problems such as large water surface fluctuations, multiple eddies and dead angles in the test area, and small limit flow velocity, and achieves convenient maintenance, elimination of eddy currents in the test area, and device assembly Easy to disassemble

Pending Publication Date: 2020-07-28
ZHEJIANG INST OF HYDRAULICS & ESTUARY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a fish swimming ability test device and method to solve the problem that the existing fish swimming ability test device has many eddies and dead angles in the

Method used

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  • Fish swimming capability testing device and method
  • Fish swimming capability testing device and method
  • Fish swimming capability testing device and method

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Experimental program
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Embodiment 1

[0052] refer to Figure 1-Figure 8 , the present embodiment provides a fish swimming ability testing device, comprising:

[0053] An airtight annular water tank 2, a first test area 4 and a second test area 9 are arranged in the airtight annular water tank 2, and the first test area 4 includes a first test section, which are respectively located upstream and downstream of the first test section. The first rectification grid 3 and the first guide grid 6, the first test area 4 includes a second test section, a second rectification grid 92 and a second flow guide located upstream and downstream of the second test section respectively Grid plate 91, the second test section also has a water-passing area adjustment device;

[0054] A water flow driving device, the driving end of the water flow driving device extends into the closed annular water tank 2 and is arranged upstream of the second test area 9;

[0055] A flow velocity measurement device, the flow velocity measurement dev...

Embodiment 2

[0070]This embodiment provides a method for testing fish swimming ability, which is realized by the device for testing fish swimming ability described in Embodiment 1. The specific implementation is as follows:

[0071] (1) Preliminary test

[0072] Before the formal test, it is first necessary to determine the relationship between the flow rate of the first test area 4 and the second test area 9 and the frequency of the motor 16 . In the first test area 4, the height of the top adjustment plate 41, the inner adjustment plate 42 and the bottom adjustment plate 43 is adjusted through the water-passing area adjustment device, specifically through the equipped lift-adjustable structure, to achieve the purpose of adjusting the water-passing area. Through the water flow driving device, the output power of the motor 16 is controlled by the PC control unit 18 and the frequency converter 17 so as to control the propeller 10 to generate different thrusts, forcing the water flow in the...

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Abstract

The present invention discloses a fish swimming capability testing device and method. The fish swimming capability testing device comprises a closed annular water tank, a water flow driving device anda flow rate measurement device, a first testing area and a second testing area are arranged in the closed annular water tank, the first testing area comprises a first testing section, and a first rectifying grid plate and a first flow guiding grid plate separately positioned at upper and lower parts of the first testing section, the second testing area comprises a second testing section, and a second rectifying grid plate and a second flow guiding grid plate separately positioned at upper and lower parts of the second testing section, and a water passing area adjusting device is also arrangedon the second testing section; a driving end of the water flow driving device extends into the closed annular water tank and is arranged at the upper part of the second testing area; and the flow rate measurement device is arranged in the first or second testing area. Swimming ability parameter indexes obtained by tests are applied to designs of fish ways such as gate dams, etc., so that fish passing efficiency of the fish ways is improved, and a function of the fish ways serving as the only ecological compensation engineering measure is further exerted.

Description

technical field [0001] The invention relates to the experimental field of ecological environment protection in water conservancy projects, in particular to a fish swimming ability testing device and method. Background technique [0002] my country is the country that builds the most dams in the world. According to the first water conservancy census data from 2010 to 2012, 980,002 dams have been built and 268,476 sluices have a flow rate of 1 cubic meter per second and above. These water conservancy projects are in While benefiting and eliminating harm, it also causes a series of negative impacts on the river ecosystem. The most direct impact is to destroy the longitudinal connectivity of the river and cut off the upward passage of fish, especially for fish with wandering habits, which seriously affects the living habits of fish such as baiting, overwintering, and spawning, resulting in fish The loss of population diversity and the deterioration of the quality of economic fis...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01K63/00A01K63/04
CPCA01K63/003A01K63/04A01K61/10Y02A40/81
Inventor 周盛侄徐岗胡金春王斌屠兴刚韩晓维
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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