Water power lift sail for variable water layer trawl
By using a hydrodynamic lifting sail in the mid-level trawl net, the problems of time-consuming buoyancy adjustment and water depth limitations of the float were solved, enabling rapid vertical expansion and efficient fishing of the trawl net.
CN119385120BActive Publication Date: 2026-07-24EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
- Filing Date
- 2024-12-18
- Publication Date
- 2026-07-24
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Figure CN119385120B_ABST
Abstract
The application discloses a water power lift sail for variable water layer trawl, which comprises at least two sail cloth bodies connected to the upper side of the front end of the trawl in parallel; the sail cloth bodies are V-shaped and open towards the direction of the opening of the front end of the trawl; the upper end of the front end of the sail cloth body is connected with a floating body structure; the lower part of the sail cloth body is connected to the upper side of the front end of the trawl, and the lower part of the sail cloth body is provided with a through lower opening; the lower opening is used for penetrating water flow, so that the sail cloth body generates a certain lift under the action of the water flow. The lift sail generates water power efficiency under different trawl speed conditions, thereby ensuring the vertical expansion performance of the trawl, being not restricted by the operation water depth, having a fast sinking speed, and being capable of well replacing the existing static floating force float, and improving the fishing production efficiency.
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