Intelligent rotary fish expelling device for fish way and method for expelling fish by using device

Abstract

The invention discloses an intelligent rotary fish expelling device for a fish way and a method for expelling fish by using the device. The fish expelling device comprises a walking mechanism, a fishblocking electric fence and a fish blocking fence rotating mechanism, wherein the walking mechanism comprises a walking trolley and walking tracks symmetrically distributed on the top surfaces of twoside walls of the fish way; the starting ends of the walking tracks are arranged at positions close to an overhauling folding gate, and the tail ends of the walking tracks extend to a fish collectingcompartment lifting well along the fish way; and the fish blocking electric fence is vertically hung in the fish way through the fish blocking fence rotating mechanism. Before fish expelling, the fishblocking electric fence is parallel to the water flow direction, and downstream fish enters the fish way; and when the fish in the fish way reaches the transportation volume of the fish collecting compartment lifting well, the fish blocking electric fence rotates by 90 degrees to block the inlet of the fish way, and the walking trolley drives the fish blocking electric fence to move and expel thefish in the fish way into a fish collecting compartment. According to the device and the method, the fish is automatically expelled, the fish passing efficiency of the fish way is greatly improved, manual intervention and influence on ecological environmental protection are reduced, and the safety is high.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering, and more specifically relates to an intelligent rotary fish drive device for driving fish in a fish pass of a hydropower station and a fish drive method using the device. Background technique [0002] In order to meet various requirements such as flood control, irrigation, power generation, shipping, and water supply, it is often necessary to build water conservancy and hydropower engineering buildings on rivers to form reservoirs, raise water levels, and regulate runoff. While the construction of water conservancy and hydropower projects has brought great benefits to human beings, it has also destroyed the biological continuity of the river, blocked the passage of migratory and semi-migratory fish, and reduced the biodiversity of the river. In order to protect natural fishery resources and ensure the continuity and diversity of aquatic ecosystems, the main restoration ...

AI Technical Summary

Problems solved by technology

The fish elevator is a form of fishway, which allows fish to pass through hydraulic structures in a faster way; most of the existing fishways are artificial tanks built on river structures, which are difficult to meet the local fish's convection velocity, Due to the requirements of the flow state, under normal circumstances, after fish enter the fishway, they may gather in some areas of the fishway and fail to move forward, resulting in the inability of the fish collection box to quickly collect fish for the next step of transportation, and the fish passing efficiency is low

If artificial intervention is used to collect fish, there will be potential environmental and ecological problems

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