Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Internship experience: Mechanical engineering

2,984 views

Published on

Published in: Education, Technology, Business
  • Be the first to comment

Internship experience: Mechanical engineering

  1. 1. Bedrijfservaring: Werktuigkunde The conceptual design of a traversable Pitot measurement system for the E-SCAPE facility
  2. 2. The Research Centre • Founded in 1952 , in Mol • > 700 employees working on medical and industrial applications of nuclear technology • Annual budget = € 95M • Separation from VITO in 1991 • Several nuclear reactors: BR1, BR2, BR3, VENUS with their own purpose
  3. 3. Organizational chart
  4. 4. Objective • MYRRHA: Research Reactor (50-100 MWth) to replace the ageing BR2 reactor • Operational by 2023 • Accelerator driven system (ADS) able to operate in sub-critical and critical modes • Cooled by Lead Bismuth Eutectic (LBE) • Asses flow pattern of LBE through: → Thermal-Hydraulic scale model → Numerical simulations
  5. 5. Objective • E-SCAPE: 1/6th scale model of MYRRHA • Electrical core (100kW), cooled by LBE • Objective: Characterise velocity profile of LBE at pump-outlet with traversable pitot tube → Design of the pitot tube → Proposition for traversable system → Provisional selection of measurement systems
  6. 6. Specifications • Velocity range: 0,019m/s – 0,717m/s • • • • Nominal pressure: 7 bar Nominal temperature: 200°C Maximum temperature: 350°C Density: 10470 kg/m³ • Pump diameter: 146mm • Minimize chance of LBE leakage! • Simple design • Low cost
  7. 7. Results General layout
  8. 8. Results Metal Bellows • Working pressure = 7 bar • Maximum working temperature 350°C • Traversable distance > 146mm: Not commercially available → Take 80mm and use 2 pitot tubes • Material = Stainless steel 1.4571 • Welded on both sides • Use eccentric reducer flange
  9. 9. Results Pitot tube
  10. 10. Results Pitot tube • Maximum bending should be limited to < 0,5mm to avoid vibarations • D = 10.2mm, touter = 2mm
  11. 11. Results Pitot tube • Static pressure holes position • Sensitivity to yaw angles
  12. 12. Results Linear actuator • • • • • DSBC-125-80-PPVA-N3 pneumatic cylinder from FESTO Dpiston = 125mm Working pressure of 6 bar Maximum force of 7363N Maximum lateral force of 600N • Fmin = 4276N • Fmax = 5669N
  13. 13. Results Supporting structure • Integrate in existing support structure for E-SCAPE → Remove diagonal beam assembly
  14. 14. Results Supporting structure • Be able to withstand weight of components and force of pneumatic actuator • Support for pneumatic actuator and reducer flange needed • Horizontal I-beam HE-200-A • Vertical I-beam HE-200-A
  15. 15. Useful courses • Applied Mechanics: part 3: → Calculation of bending of pitot tube • Selection- and dimensioning of machineparts → Material parameters → Dimensions of standard parts → Tolerances • Fluidmechanics → Calculation of drag forces on pitot tube → Calculation of pressure differences that occur in pitot tube
  16. 16. Self-reflection: How did I do?
  17. 17. Things I’ve learned • Working independently • Gathering of information and recognizing its reliability • Reporting of results • Communication skills: Oral and written • Language skills

×