Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
  • F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
  • F01D3/02—Machines or engines with axial-thrust balancing effected by working-fluid characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
  • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
  • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
  • F01D25/26—Double casings; Measures against temperature strain in casings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
  • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
  • F01D25/30—Exhaust heads, chambers, or the like
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
  • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
  • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
  • F01K7/30—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines using exhaust steam only
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
  • F05B2220/00—Application
  • F05B2220/30—Application in turbines
  • F05B2220/301—Application in turbines in steam turbines

Definitions

• the invention relates to a low-pressure turbine comprising a first flood and a second flood and a rotor and an inner housing arranged around the rotor and an outer housing arranged around the inner housing.
• the invention relates to a method for operating a low-pressure turbine section, wherein the low-pressure turbine section is made double-flow.
• Steam turbines are usually divided into sub-turbines.
• a steam turbine that is used in the municipal energy supply, divided into a high-pressure turbine section, medium-pressure turbine section and low-pressure turbine section.
• Each of these individual aforementioned sub-turbines is housed in a single housing each.
• construction methods are known in which the high-pressure and medium-pressure part are accommodated in a common housing.
• Structures are also known in which the middle pressure part and the low pressure part are arranged in a common housing.
• An axial arrangement of the individual turbine parts in a row requires a comparatively large amount of installation space.
• the low-pressure turbine sections are usually designed with two columns. This means that the inflowing steam flows off both in one direction and axially in the opposite direction.
• Low-pressure partial turbines are designed in such a way that the exhaust steam in one flood and the exhaust steam in the second flood are discharged laterally. the. This is also known under the term Single Side Exhaust or Double Side Exhaust.
• a further embodiment provides that the low-pressure exhaust steam is discharged downwards (so-called down exhaust).
• the object of the invention is to provide a low-pressure turbine part, which requires a smaller footprint.
• the invention is based on the aspect that a Abdampftive- tion of the low-pressure exhaust steam leads laterally or down to an enormous amount of space, which can be eliminated by the low-pressure exhaust steam is guided so that it is axially discharged.
• Inner housing and the outer housing formed by the one Low-pressure exhaust steam of the second flood flows and mixes with the low-pressure exhaust steam of the first flood on the output side.
• Alternative embodiment would be a box-shaped construction of the inner housing outer wall, so that the inner housing could be placed in the resulting space on the foundation.
• FIG. 1 shows a schematic cross-sectional view of a low-pressure turbine part.
• a low-pressure turbine part 1 is shown, which is designed with two columns. This means that the low-pressure turbine part 1 has a first flood 2 and a second flood 3. Fresh steam flows into the low-pressure turbine section 1 via an inflow pipe 4.
• a flow path 8 is formed between a rotor 6 rotatably mounted about a rotation axis 5 and an inner housing 7 arranged around the rotor 6.
• the rotor 6 is formed with individual blades 10. For the sake of clarity, only one blade is provided with the reference numeral 10. Between the individual rotor blade stages arranged on the inner housing 7 vanes 11 are arranged. For the sake of clarity only one vane provided with the reference numeral 11.
• the steam relaxes and cools down.
• the low-pressure exhaust steam 12 in the second flood 3 is deflected by the inner housing 7.
• the outer housing 9 has for this purpose deflecting elements 13, which deflect the steam again in the axial direction to the first flood 2.
• an annular space 14 is formed through which the low-pressure exhaust steam 12 of the second flood 3 flows.
• the low-pressure exhaust steam 16 of the first flow 2 is mixed with the low-pressure exhaust steam of the second flow 12. It is important to ensure that in the mixing zone 15, the speeds of the low-pressure exhaust steam 16 of the first tide 2 is substantially equal to the speed of the low-pressure exhaust steam 12 of the second tide third
• Abdampf syndromem 17 to the capacitor, not shown.
• a foundation for a bearing 18 is arranged, on which the rotor 6 is mounted.
• the location of the bearing 18 can be arranged in the steam chamber or, in alternative embodiments, stand outside the vapor space as a separate, encapsulated foundation.
• the low-pressure turbine part (1) is designed double-flow and the exhaust steam from the first flood (2) is deflected in the direction of the exhaust steam of the second flood (3).
• the direction of the exhaust steam from the first flood (2) and the direction of the exhaust steam from the second flood (3) is directed substantially parallel to the axis of rotation (5).

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Engine Equipment That Uses Special Cycles (AREA)
• Turbine Rotor Nozzle Sealing (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Control Of Turbines (AREA)

Priority Applications (9)

Applications Claiming Priority (2)

Publications (1)

Family

ID=48916005

Family Applications (1)

Country Status (11)

Cited By (1)

Families Citing this family (1)

Citations (5)

Family Cites Families (7)

• 2012
  • 2012-07-27 EP EP12178221.3A patent/EP2690253A1/de not_active Withdrawn
• 2013
  • 2013-07-23 RU RU2015106499A patent/RU2015106499A/ru not_active Application Discontinuation
  • 2013-07-23 EP EP13745005.2A patent/EP2877699B1/de not_active Not-in-force
  • 2013-07-23 KR KR20157001708A patent/KR20150036154A/ko not_active Withdrawn
  • 2013-07-23 WO PCT/EP2013/065466 patent/WO2014016272A1/de active Application Filing
  • 2013-07-23 ES ES13745005.2T patent/ES2619602T3/es active Active
  • 2013-07-23 US US14/414,112 patent/US20150167468A1/en not_active Abandoned
  • 2013-07-23 CN CN201380039726.XA patent/CN104508243B/zh not_active Expired - Fee Related
  • 2013-07-23 BR BR112015001665A patent/BR112015001665A2/pt not_active IP Right Cessation
  • 2013-07-23 PL PL13745005T patent/PL2877699T3/pl unknown
  • 2013-07-23 IN IN10803DEN2014 patent/IN2014DN10803A/en unknown
  • 2013-07-23 JP JP2015523522A patent/JP6005861B2/ja not_active Expired - Fee Related

Patent Citations (5)

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