Waterwheel type fishway

Abstract

The invention discloses a waterwheel type fishway. The waterwheel type fishway is characterized in that two fish inlet open channels are arranged at the downstream part of a dam; the fish inlet open channels are connected with fish inlet gates arranged at an outlet of a downstream river channel; two fish outlet open channels are arranged at the top of the dam; the fish outlet open channels are connected with fish outlet gates; two rails are parallelly arranged on an external slope of the dam; the upper ends of the rails are connected with the fish outlet open channels; the lower ends of the rails are connected with the fish inlet open channels; brackets and pulleys are arranged on the dam; a waterwheel is arranged on each of the rails; the two waterwheels are connected through a cable; the waterwheels respectively perform climbing and descending motion through the cable and the pulleys on the brackets; and when the waterwheel on one rail reaches the top of the dam and is tightly connected with the downstream ends of the fish outlet open channels, the waterwheel on the other rail descends and reaches the upstream ends of the fish inlet open channels. According to the waterwheel type fishway, the construction and maintenance cost is remarkably reduced, the engineering construction land is decreased, and besides, the consumption of water resource and electric energy is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a waterwheel type fishway. Background technique [0002] The construction of the dam has provided human beings with precious water resources, clean electricity, enhanced shipping capacity and flood and drought resistance capabilities, but it has prevented the migration of aquatic animals such as fish under the dam, breaking the original ecosystem. Therefore, the construction of dams often requires the construction of corresponding fishways to maintain the original water ecosystem. [0003] Existing fish-passing facilities mainly include fishways, fish elevators, fish gates, fish gathering boats, etc.; After searching the existing technical documents and patents, it is found that the existing fishways mainly use various types of open channels, such as graded or roundabout, or use mechanical energy to do work to raise the water level to reduce the water head ...

AI Technical Summary

Problems solved by technology

The main disadvantages of this invention are: 1. It needs to consume a large amount of precious water resources; 2. Each level needs to do reciprocating lifting movement, which consumes a lot of energy; 3. It is impossible to eliminate the resistance effect of the water flow on fish migration. ; 4. High construction cost and difficult operation and management

The main disadvantages of this invention are: 1. It is still an open channel flow, which cannot eliminate the resistance effect of the water discharge on fish migration; 2. It needs to consume a large amount of precious water resources; 3. The cost of fishway construction is high and the construction land Big

The main disadvantages of this invention are: 1. It is still an open channel flow, which cannot eliminate the resistance effect of the water flow on fish migration; 2. It needs to consume a lot of precious water resources; 3. The partition structure itself may become The obstruction of fish migration; 3. The construction and operation costs of this type of fishway are high

[0007] Generally speaking, no matter whether it is foreign or domestic, the fish passing facilities built by the above methods cover a large area, the engineering volume is large, and the operation needs to consume a lot of electricity or a large amount of water resources, but the fish passing effect is still not ideal, and there are many problems. Inadequacies

For high dams, the problem is even more pronounced

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