The steel welded construction with continuously welded screw blades ensures high stability. Its solid construction and generous use of material ensure a long service life. The gap-free design makes injury-free fish ascent possible.
The environmentally and fish friendly HYDROCONNECT ascent screw is installed in a concrete structure or steel frame. The design is very thin and therefore only requires a small amount of concrete and space.
3. Fish ladder and attraction current
The fish transport is based on Archimedes’ principle: Fish are raised effortlessly upstream in the standing water of the screw chamber.
special shape of the screw blades to create an optimised guiding current
bottom connection for weak swimming fish such as the bullhead, for example
Top: an axial self-aligning roller bearing accommodates the axial forces
Bottom: the radial forces
are accommodated by belts or rollers
5. Generator works
Variable rotation speeds can be used through the implemented frequency converter technology
6. Fish discharge chute
chute to transport the individually ascended fish into the calm headwater
can be disassembled
7. Compensation water protection
Steel protection for regulating the amount of compensation water
Compensation of headwater level fluctuations
Seasonally dependent compensation water quantities
Fish descent possible
For bigger locations, the water can be used as a guiding current
The compensation water protection is controlled by level sensors and water quantity specifications
If, due to the place of use, there is a need for a cover, then it can be realised using wood, glass, stone, concrete or other materials. The belt capstan and generator works are covered as a standard feature for safety and protection against external environmental influences. Generally, no complete covering of the system is necessary.