Description

In industrial structures such as hydroelectric power plants or water supply systems, changes in flow rate can lead to pressure fluctuations. These fluctuations are caused by various factors like the startup and shutdown of hydraulic machines or the opening and closing of shut-off elements. It is important to differentiate between rapid pressure changes that propagate with high velocity, known as water hammer, and slow pressure changes resulting from mass oscillations. To mitigate these issues, pipeline systems make use of air vessels or surge chambers.

This particular unit serves the purpose of generating and visualizing water hammer in pipes while demonstrating how a surge chamber operates. The trainer comprises two pipe sections – one section features a ball valve along with a surge chamber while the other includes a solenoid valve.

The experimental unit is connected to S1-FM-101 Hydraulic Bench for supplying water and measuring flow rates; however, it may also be operated through laboratory supplies if necessary.

Specification

Surge Shaft

• material: Transparent Acrylic
• length: 800mm, Ø, inner: 40mm Approx

Head tank

• material: Stainless Steel

• capacity: 50L

Osciloscope

Pipe section for water hammer

• Stainless Steel
• length: 3000mm, Ø, inner: 20mm Approx.
• distance between sensors: 3000mm
• Spring loaded Valve, closing time: 20…30ms

230V, 50Hz, 1 phase

Software

Demonstration of graphical representation of water hammering phenomenon using oscilloscope

• Data logging software included (requires PC, not supplied) 
• Pressure transients monitored using a supplied software
• The pressure transducers

• pressure: 2x 0…10bar (pipe section)
• pressure: 0…0.3bar (surge chamber)

• The transient pressure waves can be analyzed on the software

Standards

• Machinery Directive 2006/42/EC, 
• Low Voltage Directive 2006/95/EC, 
• Electromagnetic Compatibility Directive 2004/108/EC.

Dimensions

• LxWxH: 5000 x 1000 x 2000 mm

Accessories

1x Oscilloscope