A compact experiment for use with the Hydraulic Bench to demonstrate how a Pelton turbine works and to test its performance.
Key Features
• Works with TecQuipment’s Digital Hydraulic Bench for easy installation
• Includes dynamometer to load the turbine and help fi nd the power absorbed (needs an optional tachometer to fi nd speed)
• Transparent window so students can see the Pelton wheel working
• Includes band brake to measure turbine torque
• Includes inlet pressure gauge
• Screw-controlled spear valve for precise inlet fl ow control
Learning Outcomes
• Performance charts of power, speed, torque and effi ciency
• The eff ect of spear valve position
Key Specifications
• 3.5 watt nominal power
• Band brake
• Adjustable spear valve
• Inlet pressure gauge
Description
Shows students how an impulse (Pelton) turbine works and tests its performance. The Pelton wheel is an important and effi cient fl uid power machine, used in many applications.
The product consists of a Pelton wheel mounted in a corrosion-resistant enclosure. A transparent front panel allows students to see the turbine working. An optional Stroboscope (ST1, available separately) can ‘freeze’ the image of the turbine to help students better understand how it works.
An adjustable spear valve directs a jet of water through a nozzle to the buckets of the Pelton wheel to make it turn. Manual adjustment of the spear valve controls the water jet from the nozzle.
The turbine includes all pipes and fi ttings to connect it to TecQuipment’s Digital Hydraulic Bench (H1F, available separately)*, for fl ow measurement.
The Optical Tachometer (OT1, available separately) measures the speed of rotation of the turbine.
A simple mechanical brake and spring balance assembly attached to the shaft of the Pelton wheel applies a variable mechanical load (torque). Students use this with the speed (from the optional tachometer) to fi nd power absorbed by the turbine. A gauge measures inlet pressure.
Students adjust the spear valve and measure inlet pressure, fl ow rate and torque (and speed with the optional tachometer). They plot these values to fi nd the turbine performance.
Essential Base Unit
• Digital Hydraulic Bench (H1F)*
*This product will also work with an existing TecQuipment Volumetric Hydraulic Bench (H1D)
