Schule, Abteilung: HTL Wels, Abteilung Maschinenbau Jahrgang: 3. Jahrgang Lehrer/in: Manfred Hofinger Schuljahr: 2013/14 Gegenstand: Fördertechnik und Technische Logistik Thema: Turbo Couplings Activity type/s Classroo m format Time Procedure Resource s Contentrelated learning outcome Languagerelated learning outcome Source/s 1. Reading a text on turbo couplings 2. Discussing the content 3. Watching a video 4. Translating component names / labelling a picture 1. Individual work 2. Team work 3. Whole class 1 2 lessons 1. Reading a text 2. Making a mind map 3. Discussing / presenting results Voith information folder and/or handout Turbo Couplings (see Student s version) Video: http://www.infomine.com/library/videos/1351c0/voith_turbo_fluid_couplings,_hydrodynamics.as px (28.06.2013) Students gain knowledge on the function of a turbo coupling including specific vocabulary 1. Students improve their listening and speaking skills. 2. Students extend their range of technical vocabulary. Voith information folder Video: http://www.infomine.com/library/videos/1351c0/voith_turbo_fluid_couplings,_hydrodynamics.as px (28.06.2013) Manfred Hofinger 1/7
Student s version Turbo Couplings Fördertechnik und Technische Logistik - Turbo Couplings 1) Read the following text and make a mind map including the most important pieces of information. Manfred Hofinger 2/7
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2) Get in teams of three or four. Discuss the most important findings you got and take notes. Then present your results to the class. 3) Watch the video explaining the function of a Voith coupling. While watching make a mind map writing down the most important pieces of information. http://www.infomine.com/library/videos/1351c0/voith_turbo_fluid_couplings,_hydrodynamics.aspx 4) Checking your knowledge: a. Match the English words with the appropriate German translations. engine shaft, pump wheel, output shaft, turbine wheel, deceleration room, elastic coupling, working chamber, retaining capacity Pos.N English name German name Pumpenrad Elastische Kupplung Verzögerungskammer Turbinenrad Abtriebswelle Arbeitsraum Stauraum Motorwelle b. Have a look at the picture and label it / complete the table above. Use the words from activity a. c. Are these statements correct? Please explain your answers. Write 1-2 sentences each. i. The turbo coupling is a hydrodynamic coupling! yes / no / why ii. Turbo couplings may be used to adopt the rotation continuously! yes / no / why / how Manfred Hofinger 4/7
iii. For the transmission of high torque moments it is better to use a multi disc clutch! yes / no / why iv. Flexible couplings are used with the turbo coupling to lower the motor run up moment! yes / no / why Manfred Hofinger 5/7
Teacher s version 4) Checking your knowledge: Fördertechnik und Technische Logistik - Turbo Couplings a. Match the English words with the appropriate German translation. engine shaft, pump wheel, output shaft, turbine wheel, deceleration room, elastic coupling, working chamber, retaining capacity Pos.N English name German name 1 pump wheel Pumpenrad 4 elastic coupling Elastische Kupplung 7 retaining capacity Verzögerungskammer 2 turbine wheel Turbinenrad 5 output shaft Abtriebswelle 8 working chamber Arbeitsraum 6 deceleration room Stauraum 3 engine Shaft Motorwelle b. Have a look at the picture and label it / complete the table below: c. Are these statements correct? Please explain your answer. Write 1-2 sentences each. Manfred Hofinger 6/7
i. The turbo coupling is a hydrodynamic coupling! yes / no / why a. Yes, because the energy / moment is transmitted by hydraulic fluid ii. Turbo couplings may be used to adopt the rotation continuously! yes / no / why / how a. Yes, using more or less oil in the pump wheel the rotation can be adopted. iii. If high vibrations might occur it is better to use a multi disc clutch! yes / no / why a. No, turbo couplings shall be used if there are vibrations or torque overload might occur because the hydraulic fluid can only transmit a certain maximum of energy / torque moment. With higher load the rotation gets slower until the turbine wheel stops. iv. Flexible couplings are used with the turbo coupling to lower the motor run up moment! yes / no / why a. No, the turbo coupling is used for this purpose. Flexible couplings are used to compensate installation inaccuracies. Manfred Hofinger 7/7