适用于大型水生物逃逸的兼捕减少装置

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By employing a triangular escape opening and guide fence design in the bycatch reduction device, combined with monitoring cameras and pressure sensors, the problem of obstructed escape paths for large aquatic organisms has been solved, achieving efficient ecological protection and precise capture.

CN224504429UActive Publication Date: 2026-07-17SHANGHAI OCEAN UNIV

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHANGHAI OCEAN UNIV
Filing Date: 2025-08-14
Publication Date: 2026-07-17

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Abstract

本实用新型公开了一种适用于大型水生物逃逸的兼捕减少装置。该兼捕减少装置包括网囊(1)，所述网囊的尾端处具有取鱼部(15)，所述网囊开设有大逃逸口(11)和防逃逸口(12)，所述大逃逸口和防逃逸口均设置在网囊本体的上部位置，在大逃逸口处设置有引导栅栏(13)，该引导栅栏横隔在网囊中并且呈倾斜状；所述大逃逸口为三角形，所述防逃逸口为正方形。采用三角形大逃逸口结合引导栅栏的设计，有利于大型水生物顺利逃逸离开网囊；采用正方形防逃逸口并设置网目，从而方便目标捕获鱼种进入取鱼部。

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Claims

1. A device for reducing bycatch of large aquatic organisms that can escape, characterized in that: The bycatch reduction device includes a net bag (1), which has a fish-catching part (15) at its tail end. The net bag (1) has a large escape port (11) and an escape prevention port (12). The large escape port (11) and the escape prevention port (12) are both located at the upper part of the net bag (1). A guide fence (13) is provided at the large escape port (11). The guide fence (13) is horizontally spaced in the net bag (1) and is inclined.

2. The apparatus according to claim 1, wherein: The main escape opening (11) is triangular, and the anti-escape opening (12) is square.

3. The apparatus according to claim 1, wherein: The escape prevention port (12) is equipped with a square mesh.

4. The apparatus according to claim 1, wherein: The large escape port (11) is close to the inlet of the net bag (1).

5. The apparatus according to claim 1, wherein: A surveillance camera (14) is installed at the escape vent (11).

6. The apparatus of claim 1, wherein: A pressure sensor is installed at the connection between the guide fence (13) and the inner wall of the mesh bag (1).

7. The apparatus of claim 1, wherein: The guide fence (13) is made of polyethylene.

8. The apparatus of claim 1, wherein: An infrared sensor is installed at the escape port (12).