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A. I.B alitskii

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.

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A. I.B alitskii

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  1. PMI-2007 A.I.Balitskii 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

  2. Parameters of hydrogen and hydrogen-containing environments in modern turboagregates with 100…1000 MW output

  3. Hydrogen cooling system of modern turboagregate

  4. Technological scheme of electrolyzer equipment (EU) SEU-4Мх2 with distributed regulators of pressure andgas 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; 4,5пр – hydrogen blow- through; 3,7 -oxygen; 3,7пр - oxygen blow- through; 5,1 - nitrogen; 1,8 - condensate; 7,2 - electrolyte; 1,2 – cooling water.

  5. 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.

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

  7. 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 electrolysers; Main pipe line: 4,5 - hydrogen; 1,2 – cooling water; 1,0 – waste water; 2,3 – overheated steam; 2,0 – waste steam.

  8. 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 до receiver; 11 - в 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; 4,5пр – hydrogen blow-through; 5,1 – nitrogen.

  9. 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.

  10. 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 ХКА; 15 – sensitive thermo-vessel relay.

  11. Hydrogen induced damages and cracks locations after long term service

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

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

  14. Comparison of in service crack propagation velocitiesand experimental data

  15. Comparison of crack length extension during 1 year 2006 2007

  16. 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.

  17. Cryteria of materials selections for advanced energetic equipment

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