Component parts or details of steam boilers

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F22Steam generation F22BMETHODS OF STEAM GENERATION STEAM BOILERS

F22B37/00Component parts or details of steam boilers

F22B37/001Steam generators built-up from pre-fabricated elements F22B37/002specially adapted for nuclear steam generators F22B37/003Maintenance, repairing or inspecting equipment positioned in or via the headers F22B37/005Positioning apparatus specially adapted therefor F22B37/006Walking equipment F22B37/007Installation or removal of nuclear steam generators F22B37/008Adaptations for flue gas purification in steam generators F22B37/02applicable to more than one kind or type of steam boiler F22B37/025Devices and methods for diminishing corrosion F22B37/04and characterised by material F22B37/06Flue or fire tubes Accessories therefor F22B37/08Fittings preventing burning-off of the tube edges F22B37/10Water tubes Accessories therefor F22B37/101Tubes having fins or ribs F22B37/102Walls built-up from finned tubes F22B37/103Internally ribbed tubes F22B37/104Connection of tubes one with the other or with collectors, drums or distributors F22B37/105Penetrations of tubes through a wall and their sealing F22B37/106Studding of tubes F22B37/107Protection of water tubes F22B37/108Protection of water tube walls F22B37/12Forms of water tubes F22B37/125Bifurcates F22B37/14Supply mains F22B37/141involving vertically-disposed water tubes F22B37/142involving horizontally-or helically-disposed water tubes F22B37/143Panel shaped heating surfaces built up from tubes F22B37/145Flag-shaped panels built-up from tubes F22B37/146Tube arrangements for ash hoppers and grates and for combustion chambers of the cyclone or similar type out of the flues F22B37/147Tube arrangements for cooling orifices, doors and burners F22B37/148Tube arrangements for the roofs F22B37/16Return bends F22B37/165Closures for access openings in return bends F22B37/18Inserts F22B37/20Supporting arrangements F22B37/201Suspension and securing arrangements for walls built-up from tubes F22B37/202Suspension and securing arrangements for contact heating surfaces F22B37/203Horizontal tubes supported only away from their ends on vertical support tubes F22B37/204Supporting arrangements for individual tubes F22B37/205Supporting and spacing arrangements for tubes of a tube bundle F22B37/206Anti-vibration supports for the bends of U-tube steam generators F22B37/207Supporting arrangements for drums and collectors F22B37/208Backstay arrangements F22B37/22Drums Headers Accessories therefor F22B37/221Covers for drums, collectors, manholes or the like F22B37/222Nozzle dams introduced through a smaller manway F22B37/223Boiler plugs F22B37/225Arrangements on drums or collectors for fixing tubes or for connecting collectors to each other F22B37/226Protection of drums against combustion F22B37/227Drums and collectors for mixing F22B37/228Headers for distributing feedwater into steam generator vessels; Accessories therefor F22B37/24Supporting, suspending, or setting arrangements F22B37/242for bottom supported water-tube steam generators F22B37/244for water-tube steam generators suspended from the top F22B37/246for steam generators of the reservoir type F22B37/248with a vertical cylindrical wall F22B37/26Steam-separating arrangements F22B37/261specially adapted for boiler drums F22B37/263Valves with water separators F22B37/265Apparatus for washing and purifying steam F22B37/266Separator reheaters F22B37/268specially adapted for steam generators of nuclear power plants F22B37/28involving reversal of direction of flow F22B37/283specially adapted for boiler drums F22B37/286specially adapted for steam generators of nuclear power plants F22B37/30using impingement against baffle separators F22B37/303specially adapted for boiler drums F22B37/306specially adapted for steam generators of nuclear power plants F22B37/32using centrifugal force F22B37/322specially adapted for boiler drums F22B37/325using a revolving element F22B37/327specially adapted for steam generators of nuclear power plants F22B37/34Adaptations of boilers for promoting water circulation F22B37/36Arrangements for sheathing or casing boilers F22B37/365Casings of metal sheets F22B37/38Determining or indicating operating conditions in steam boilers F22B37/40Arrangements of partition walls in flues of steam boilers F22B37/42Applications, arrangements, or dispositions of alarm or automatic safety devices F22B37/421Arrangements for detecting leaks F22B37/423Valves for testing steam generators F22B37/425Feed-water supply alarm devices using floats F22B37/426Feed-water supply alarm devices using electric signals F22B37/428Feed-water supply alarm devices using dilatation of solids or liquids F22B37/44of safety valves F22B37/443Safety devices extinguishing the fire F22B37/446Safety devices responsive to overpressure F22B37/46responsive to low or high water level F22B37/47responsive to abnormal temperature F22B37/475Safety devices with fusible plugs F22B37/48Devices for removing water, salt, or sludge from boilers Arrangements of cleaning apparatus in boilers Combinations thereof with boilers F22B37/483specially adapted for nuclear steam generators F22B37/486Devices for removing water, salt, or sludge from boilers F22B37/50for draining or expelling water F22B37/52Washing-out devices F22B37/54De-sludging or blow-down devices F22B37/545Valves specially adapted therefor F22B37/56Boiler cleaning control devices F22B37/565Blow-down control F22B37/58Removing tubes from headers or drums Extracting tools F22B37/60specially adapted for steam boilers of instantaneous or flash type F22B37/62specially adapted for steam boilers of forced-flow type F22B37/64Mounting of, or supporting arrangements for, tube units F22B37/645involving upper vertically-disposed water tubes and lower horizontally- or helically disposed water tubes F22B37/66involving vertically-disposed water tubes F22B37/68involving horizontally-disposed water tubes F22B37/70Arrangements for distributing water into water tubes F22B37/72involving injection devices F22B37/74Throttling arrangements for tubes or sets of tubes F22B37/76Adaptations or mounting of devices for observing existence or direction of fluid flow F22B37/78Adaptations or mounting of level indicators