EP3791050A1 - Entrée de vapeur de dérivation - Google Patents

Entrée de vapeur de dérivation

Info

Publication number
EP3791050A1
EP3791050A1 EP19734313.0A EP19734313A EP3791050A1 EP 3791050 A1 EP3791050 A1 EP 3791050A1 EP 19734313 A EP19734313 A EP 19734313A EP 3791050 A1 EP3791050 A1 EP 3791050A1
Authority
EP
European Patent Office
Prior art keywords
arrangement
steam
housing
condenser
holes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19734313.0A
Other languages
German (de)
English (en)
Other versions
EP3791050B1 (fr
Inventor
Christian Musch
Andreas Auge
Simon Hecker
Stephan Minuth
Andreas PENKNER
Steffen Wendt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP3791050A1 publication Critical patent/EP3791050A1/fr
Application granted granted Critical
Publication of EP3791050B1 publication Critical patent/EP3791050B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • 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
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/04—Plants characterised by condensers arranged or modified to co-operate with the engines with dump valves to by-pass stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/02—Auxiliary systems, arrangements, or devices for feeding steam or vapour to condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines

Definitions

  • the invention relates to a bypass steam system for introducing a flow of high-energy steam into a condenser, comprising the arrangement for uniformizing the flow, an arrangement having a housing which is designed to limit the flow, the housing having holes through which the flow flows as a beam in a room outside of the housing.
  • a steam is generated in a so-called steam generator and led to a steam turbine via pipes.
  • the thermal energy of the steam is converted into mechanical rotational energy in the steam turbine.
  • the pressure and the temperature of the steam decrease.
  • the steam flows into a condenser at comparatively low temperatures and low pressure, where the steam condenses on cool condenser pipes and is converted back to water.
  • bypass operation three criteria must essentially be fulfilled so that safe operation is possible, which moreover leads to as little damage as possible.
  • the bypass steam inlet must be designed so that it does not damage the cooling pipes of the condenser by stamping impermissibly high steam speeds.
  • the following criterion must be observed: Since the steam is cooled by water injection before being introduced into the condenser and the water may be present in the form of drops or steam, it must also be ensured that droplet loading does not cause damage to the condenser or the erosion Turbine is coming.
  • a perforated basket is characterized by a housing that has individual holes through which the bypass steam flows.
  • the steam flows after the perforated basket into a free space of the condenser dome, which is often provided with stiffening elements of different geometry.
  • dumptubes represent an alternative to the perforated basket. These are also designed to conduct the bypass steam into the condenser.
  • the dumptube is characterized by a tube-like housing, which also bores gene through which the bypass steam flows into the condenser.
  • Dumptube to ensure that the steam neither flows directly towards the condenser tubes nor towards the turbine in order to prevent any damage to the condenser tube and the turbine blades.
  • Erosion poses a problem. Because of the gas jet-related jet burst, a large area with supersonic flow can occur, it is not always possible to completely rule out erosion-related damage to the condenser. Erosion occurs when water drops are accelerated to high speed and then hit installation parts. This damage can be minimized through the use of erosion-resistant materials, but this is very cost-intensive and can later lead to a renewal in the event of service.
  • the previous configurations of the perforated baskets and the dumptubes are such that there is a post-expansion in which the beams from the individual bores are combined, which can be referred to as throttle bores, and thus to a large coherent area with supersonic flow in which there is a potential risk of harm. Since a dissipation of the beam essentially only occurs at the edge of the beam, the penetration depth of the beam is also very large in this case. In the case of a perforated basket, this area can extend to the opposite condenser wall. The invention seeks to remedy this.
  • the area to which the beam energy can be dissipated is increased many times over, and the depth of penetration is thus reduced many times over.
  • the arrangement is a perforated basket in one case and a dumptube in another case.
  • the distance D between two neighboring hole centers is at least 50 mm. This is a value that has been empirically determined and is an optimal value. At this value of 50 mm, the distance between the individual holes is such that the hole pattern is such that no beam unification can occur at any operating point.
  • holes are designed as a bore deviating from a circular cross section.
  • the relationship should be maximized from hole circumference to hole cross-section so that the beam edge is also maximized.
  • the hole can be designed in a cloverleaf shape. With such a design, the ratio of hole circumference to hole cross section is maximum and leads to a further improvement.
  • Figure 1 is a perspective view of part of a
  • Figure 2 is an enlarged view of part
  • Figure 3 is a schematic representation of an alternative
  • Figure 4 is an enlarged view of an arrangement according to the invention
  • Figure 5 is a perspective view of part of the
  • Figure 6 is a perspective view of an alternative
  • Figure 7 is a cross-sectional view of part of the arrangement
  • Figure 8 is a plan view of part of the arrangement
  • FIG. 1 shows a condenser 1.
  • the condenser 1 comprises a condenser housing 2 and condenser tubes 3.
  • a cooling medium flows through the condenser tubes 3.
  • the steam supplied in the condenser housing 2 condenses into water from a low-pressure turbine part.
  • the supply of steam from the low-pressure turbine section into the condenser 1 is not shown in more detail in FIG.
  • a steam with high energy flows via a diversion steam system via a diversion line 4 through the condenser housing 2 into an arrangement 5, which in this case is a perforated basket 6.
  • an arrangement 5 which in this case is a perforated basket 6.
  • Stiffening elements 7 arranged inside the capacitor 1 .
  • the arrangement 5 comprises a housing 8 which is designed to limit the flow from the diversion device 4.
  • the housing 8 has holes 9.
  • the arrangement 5 and the Ge housing 8 are designed such that the steam from the Umleittechnisch 4 can only flow through the holes 9 in the condenser interior and an outflow of the steam between Ge housing 8 and condenser housing 2 is not possible.
  • FIG. 3 shows an alternative embodiment of the arrangement 5.
  • the arrangement 5 is designed as a dump tube 10.
  • the dumptube 10 also has a housing 8 in which holes 9 are arranged.
  • FIG. 6 shows an enlarged illustration of a part of the arrangement which can be formed as a perforated basket 6 or as a dumptube 10.
  • a part of the housing 8 can be seen in FIG. 6.
  • Several holes 9 are also shown.
  • the hole centers 13 of two adjacent holes 9 are at a distance 11 from one another. This distance 11 is such that a jet flowing through the hole 9 does not unite with one another.
  • the distance 11 should therefore be at least 50 mm.
  • FIG. 5 shows an alternative embodiment of a hole 9a.
  • the hole 9a is designed as a cloverleaf.
  • the ratio of hole circumference and hole cross section is optimal.
  • FIG. 7 shows an embodiment of a hole 9.
  • the hole 9 is designed as a Laval nozzle.
  • the flow 12 takes place from left to right.
  • FIG. 8 shows a representation of the distances 11 between two adjacent holes 9.
  • the center of the hole 13 is marked with a cross. For reasons of clarity see only four hole centers with the reference numeral 13 ver.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne un dispositif (5) pour égaliser un écoulement avec un boîtier (8) qui est conçu pour limiter l'écoulement, le boîtier (8) comportant des trous (9) à travers lesquels l'écoulement s'écoule comme un jet dans un espace extérieur au boîtier (8), la distance entre les trous (9) étant telle qu'aucune combinaison de jets sortant de deux trous voisins (9) ne peut survenir.
EP19734313.0A 2018-07-03 2019-06-19 Conduit de dérivation de vapeur Active EP3791050B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18181414.6A EP3591179A1 (fr) 2018-07-03 2018-07-03 Conduit de dérivation de vapeur
PCT/EP2019/066192 WO2020007609A1 (fr) 2018-07-03 2019-06-19 Entrée de vapeur de dérivation

Publications (2)

Publication Number Publication Date
EP3791050A1 true EP3791050A1 (fr) 2021-03-17
EP3791050B1 EP3791050B1 (fr) 2022-06-08

Family

ID=62846047

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18181414.6A Withdrawn EP3591179A1 (fr) 2018-07-03 2018-07-03 Conduit de dérivation de vapeur
EP19734313.0A Active EP3791050B1 (fr) 2018-07-03 2019-06-19 Conduit de dérivation de vapeur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18181414.6A Withdrawn EP3591179A1 (fr) 2018-07-03 2018-07-03 Conduit de dérivation de vapeur

Country Status (7)

Country Link
US (1) US20210231030A1 (fr)
EP (2) EP3591179A1 (fr)
JP (1) JP2022505564A (fr)
KR (1) KR102481662B1 (fr)
CN (1) CN112543842B (fr)
RU (1) RU2756941C1 (fr)
WO (1) WO2020007609A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009137572A2 (fr) 2008-05-06 2009-11-12 Alba Therapeutics Corporation Inhibition des peptides de la gliadine
US11608359B2 (en) 2018-02-23 2023-03-21 9 Meters Biopharma, Inc. Compounds and methods for treating tight junction permeabtility

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1330081A (en) * 1919-02-06 1920-02-10 Ljungstroms Angturbin Ab Condensing apparatus
JPS58220908A (ja) * 1982-06-16 1983-12-22 Hitachi Ltd タ−ビンバイパス蒸気のエネルギ−ダンパ構造
DE3240453A1 (de) * 1982-11-02 1984-05-03 Kraftwerk Union AG, 4330 Mülheim Dampfturbinenkondensator mit mindestens einer in den dampfdom einmuendenden umleitdampfeinfuehrung
JPS6490736A (en) * 1987-09-30 1989-04-07 Sumitomo Rubber Ind Apex mounting and its device
JPH02267490A (ja) * 1989-04-07 1990-11-01 Toshiba Corp 復水器
JPH10325686A (ja) * 1997-05-22 1998-12-08 Toshiba Corp 復水器およびその起動方法
EP0953731A1 (fr) * 1998-04-30 1999-11-03 Asea Brown Boveri AG Dispositif d'introduction de vapeur dans des centrales d'énergie
US6481208B1 (en) * 2001-10-01 2002-11-19 Holtec International External steam dump
JP4673765B2 (ja) * 2006-02-27 2011-04-20 株式会社日立製作所 タービン排気システム
EP2565538A1 (fr) * 2011-08-31 2013-03-06 Siemens Aktiengesellschaft Conduite de vapeur de déviation
KR20130056446A (ko) * 2011-11-22 2013-05-30 비에이치아이 주식회사 복수기의 습증기 침식방지용 증기 바이패스 덤프 분사장치
EP2829693A1 (fr) * 2013-07-26 2015-01-28 Siemens Aktiengesellschaft Condensateur à turbine pour une turbine à vapeur
EP3104107B1 (fr) * 2015-06-12 2018-08-08 General Electric Technology GmbH Dispositif de décharge de vapeur pour une centrale nucléaire

Also Published As

Publication number Publication date
US20210231030A1 (en) 2021-07-29
EP3591179A1 (fr) 2020-01-08
RU2756941C1 (ru) 2021-10-07
JP2022505564A (ja) 2022-01-14
KR20210027429A (ko) 2021-03-10
CN112543842B (zh) 2023-04-21
CN112543842A (zh) 2021-03-23
WO2020007609A1 (fr) 2020-01-09
EP3791050B1 (fr) 2022-06-08
KR102481662B1 (ko) 2022-12-28

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