Realization of a hydraulic ram (experimental but perfectly functional) byUniversity of Orléans
A hydraulic ram is a pump that uses the energy of the water to go up a certain amount of water much higher than the initial water during the height.
It is a self-powered pump that pumps "free" about 30% of the water running through it.
assembly diagram, click to enlarge
The principle is simple and a ram is easily achievable through commercial plumbing parts.
Here is the presentation of a ram test bed created by a professor from the University of Orleans. You can discuss with him our forum dedicated to the manufacture of a hydraulic ram.
Overview and performance
A tank with a capacity of 10 liters is placed at the outlet of the lift column (5.20 m).
The measured time to fill the tank is 6 minutes, this measure does not take into account the system boot time.
- Volume remaining in the tank "fall": 72 liters
- Volume recovered 10 liters
- Volume lost 35 liters
- Efficiency: 10 / 35 28% =
For an operating time of 1 100 liters time we recovered ...
Details on the implementation of the valve and the ram
One piece is to change the brass strainer. It adds a filtetée rod with a dual function: to guide the oscillation of the valve and adjusting the automatic reopening time of the valve according to the mass applied to them (80 grams in assembling shown here). This mass will obviously be unique to each assembly (pressure / flow ...)
Parts of a ram
Realization of the ram valve: a slightly modified brass strainer.
Photos general assembly
assembled hydraulic ram and running