A. I.B alitskii

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PMI -200 7. A. I.B alitskii Karpenko Physico-Mechanical Institute National Academy of Sciences of Ukraine, Lviv , Ukraine INFLUENCE OF WORKING HYDROGEN ENVIRONMENTS ON CRACK PROPAGATION IN HIGH NITROGEN STEELS OF ENERGETIC EQUIPMENTS. - PowerPoint PPT Presentation

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  • A.I.BalitskiiKarpenko Physico-Mechanical Institute National Academy of Sciences of Ukraine, Lviv, UkraineINFLUENCE OF WORKING HYDROGEN ENVIRONMENTS ON CRACK PROPAGATION IN HIGH NITROGEN STEELS OF ENERGETIC EQUIPMENTS

  • Parameters of hydrogen and hydrogen-containing environments in modern turboagregates with 1001000 MW output

  • Hydrogen cooling system of modern turboagregate

  • Technological scheme of electrolyzer equipment (EU) SEU-42 with distributed regulators of pressure and gas washer: 1 electrolyzer; 2 distributed columns for hydrogen; 3 distributed columns for oxygen; 4 hydrogen washer; 5 oxygen washer; 6 hydrogen pressure regulators; 7 oxygen pressure regulators; 8 surge tank; 9 tank for alkali; 10 check valve; 11 refractory; 12 pump; 13 expander; 14 nitrogen manifold; 15 freezer; 16 hydrogen for drying; 17- oxygen pressure regulator; 18 - protecting valve. Pipe-line: 4,5 - hydrogen; 4,5 hydrogen blow- through; 3,7 -oxygen; 3,7 - oxygen blow- through; 5,1 - nitrogen; 1,8 - condensate; 7,2 - electrolyte; 1,2 cooling water.

  • Technological scheme of hydrogen drying adsorption equipment: 1 steam heater; 2 dryer; 3 freezer; 4 separator; 5 condensate accumulator; 6 condensate evacuator; 7 hydrogen to receivers; 8 hydrogen from electrolyzer; Main pipe-line: 4,5 - hydrogen; 1,2 cooling water; 1,0 waste water; 2,3 overheated steam; 2,0 waste steam.Scheme of hydrogen equipment drying cooling method: 1 flash steam; 2 expander; 3 freezer-compressor plant item; 4 Freon; 5 to pressure instrument relay; 6 to manometer; 7 to minimum pressure relay; 8 to monovacuummeter ; 9 hydrogen from pressure regulator; 10 hydrogen to receivers.

  • Hydrogen distribution through the pressure vessel thickness (1) and bottom wall (2) of distribution hydrogen electrolyzer column

  • Technological scheme ofhydrogen dryingadsorption equipment: 1 steam heater; 2 dryer; 3 freezer; 4 separator;5 condensate accumulator; 6 condensate evacuator;7 hydrogen to receivers;8 hydrogen fromelectrolysers; Main pipeline: 4,5 - hydrogen; 1,2 cooling water; 1,0 waste water; 2,3 overheated steam; 2,0 waste steam.

  • Technological scheme of hydrogen drying adsorption equipment with vacuum-thermal sorbent regeneration: 1 rotameter; 2 pressure regulator; 3 desiccator; 4 vacuum pump; 5 fire stop; 6 monovakuummetr; 7 check valve; 8, 15 valve stop; 9 hydrogen from electrolyses; 10 hydrogen to receiver; 11 - output in atmosphere; 12 gas flow direction; 13 - liquid flow direction; 14 outage hopper; 16 reworkable waste valve. Pipe-line: 1,2 cooling water; 1,0 - outage cooling water; 2,3 - steam; 2,0 steam waster ; 4,5 - hydrogen; 4,5 hydrogen blow-through; 5,1 nitrogen.

  • Recommended scheme of permanent blowing and automatic hydrogen feeding of generators: 1 filter; 2 generator; 3 regulator; 4, 8 rotameter; 5 protecting valve; 6 reworkable waste valve; 7 oil evacuator.

  • Modern evaporator: 1 outer (hydrogen) zone; 2 inner (cooling accumulated) zone; 3 serpentane; 4 gathering water; 5, 6 - pipes; 7 drainage valve; 8 removing lid; 9 pipe; 10 entrance liquid Freon; 11, 13 entrance hydrogen; 12 - outlet steam Freon.Modern scheme of hydrogen drying: 1 turbogenerator core; 2 heat exchanger pipe in pipe; 3 evaporator; 4 gathering water; 5 pump; 6 reciver; 7 thermoregulating valve; 8 sensitive thermo-vessel; 9 valve; 10, 11 pipes; 12 drainage valve; 13 temperature relay core ; 14 magnetic starter electric motor ; 15 sensitive thermo-vessel relay.

  • Hydrogen induced damages and cracks locations after long term service

  • In service control of hydrogen, structure materials and vibration states of FPP and NPP turbogenerators components

  • UTS after long term service in hydrogenInfluence of electrolyte hydrogen saturation (strengthening levels 14, 17) and gaseous hydrogen on the standard mechanical properties of HNS

  • Comparison of in service crack propagation velocities and experimental data

  • Comparison of crack length extension during 1 year 2006 2007

  • Methodical recommendations of technical state evaluation of turbogenerator rotor retainingrings(normative document SNOU-N TT45.301:2006)/ Loshak O.S., Balitskii A.I., Pulkas L.G., Lozunov S.O., Ripey I.V., Gurina O.V. // Ministry of fuel and energetic of Ukraine.- Decision of Minister N 432, 9.11.2006.- Kyiv, Ukraine, GRIFRE.- 32 PMethodical recommendations of technical state diagnostic and evaluation of life time of steam turbine cast vessel details (normative document)/ Loshak O.S., Balitskii A.I., Pulkas L.G., Lozunov S.O., Ripey I.V., Gurina O.V. // Ministry of fuel and energetic of Ukraine.- Decision of Minister N 124, 1.03.2007.- Kyiv, Ukraine, GRIFRE.- 39 P.

  • Cryteria of materials selections for advanced energetic equipment

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