Floating type fishway equipment and fishway system

By combining floating fishway equipment with the main drainage device, the water depth and flow velocity at the fishway inlet section are adjusted, solving the problem of fish entry failure when the water level fluctuates too much in traditional fishways. This achieves stable and unobstructed fish migration channels and reduces construction costs.

CN121875237AActive Publication Date: 2026-04-17NORTHWEST ENGINEERING CORPORATION LIMITED
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Patent Information

Application Number
CN202610329661.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-18
Publication Date
2026-04-17
Estimated Expiration
2046-03-18

AI Technical Summary

Technical Problem

Traditional fixed fishways cannot dynamically adapt to continuous changes in water level, causing fish migration channels to fail to enter when water level fluctuations are too large.

Method used

Design a floating fishway system, including a fish tank, a water chamber, and a main drainage system. By adjusting the draft of the floating fishway body and using a connecting device to move it to a fixed fishway, ensure that the fishway inlet section always maintains a suitable water depth and flow rate under different water level conditions.

Benefits of technology

This ensured the smooth flow of fish migration channels, prevented fish from failing to enter due to excessive water level fluctuations, reduced dependence on topographical and geological conditions, decreased the consumption of civil engineering materials and construction costs, and shortened the construction cycle.

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Abstract

The invention provides floating type fishway equipment and a fishway system, and relates to the technical field of water conservancy and hydropower engineering facilities, the floating type fishway equipment comprises a floating type fishway main body, a main drainage device, a connecting device and a telescopic connecting piece, the floating type fishway main body comprises a fish tank and a water tank device, the fish tank is installed on the upper portion of the water tank device, and the main drainage device is installed on the water tank device; the water tank device comprises a plurality of water ballast tanks arranged in the extending direction of the fish tank. The floating fishway main body is arranged at the downstream of the fixed fishway; the main drainage device is respectively communicated with the plurality of water ballast spaces and is used for selectively filling and draining water into the water ballast spaces; the connecting device is used for movably connecting the floating fishway main body with the fixed fishway; one end of the telescopic connecting piece is communicated with one end of the fish tank, and the other end of the telescopic connecting piece is communicated with the fixed fishway. The floating fishway equipment can dynamically adapt to the continuous change of the water level so as to ensure that a fish migration channel is always smooth.
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