WO2018119763A1 - Corps unitaire d'ensemble plaque de séparation de buse d'une turbine à vapeur - Google Patents

Corps unitaire d'ensemble plaque de séparation de buse d'une turbine à vapeur Download PDF

Info

Publication number
WO2018119763A1
WO2018119763A1 PCT/CN2016/112683 CN2016112683W WO2018119763A1 WO 2018119763 A1 WO2018119763 A1 WO 2018119763A1 CN 2016112683 W CN2016112683 W CN 2016112683W WO 2018119763 A1 WO2018119763 A1 WO 2018119763A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
assembly unit
unit body
steam
diaphragm assembly
Prior art date
Application number
PCT/CN2016/112683
Other languages
English (en)
Chinese (zh)
Inventor
王俊
Original Assignee
深圳智慧能源技术有限公司
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 深圳智慧能源技术有限公司 filed Critical 深圳智慧能源技术有限公司
Priority to PCT/CN2016/112683 priority Critical patent/WO2018119763A1/fr
Publication of WO2018119763A1 publication Critical patent/WO2018119763A1/fr

Links

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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/18—Final actuators arranged in stator parts varying effective number of nozzles or guide conduits, e.g. sequentially operable valves for steam turbines
    • 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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector

Definitions

  • the present invention relates to the field of steam turbines, and more particularly to a nozzle diaphragm assembly unit body of a steam turbine that can flexibly realize a steam turbine with a simple adjustment.
  • the adjustment stage nozzle group is generally installed in the steam chamber, and is supported by the outer ring of the diaphragm and the inner ring, and the process is formed by welding or riveting.
  • the nozzle group is composed of a plurality of nozzles, which constitute a fan-shaped nozzle arc segment, and the nozzle flow path is composed of two stator blades, so that many stator blades are required.
  • Such a design causes an increase in processing cost and installation cost, and assembly accuracy is difficult to ensure. If part of the steam is used, the support needs to be further processed.
  • the present invention proposes a nozzle diaphragm assembly unit body of a steam turbine that can accommodate the needs of a small flow, low power waste heat steam turbine unit.
  • a nozzle diaphragm assembly unit body of a steam turbine having a plurality of through holes integrally formed, each of the through holes forming a steam nozzle communicating with a steam chamber of the steam turbine .
  • the nozzle diaphragm assembly unit body has a steam inlet end and a steam outlet end, and the steam inlet end is in communication with the steam chamber, and the nozzle partition plate combines the inlet end of the unit body A central portion and an outer edge are formed, and an annular recess is formed between the central portion and the outer edge, and the nozzle extends through the annular recess and is distributed along a circumferential direction of the annular recess.
  • a plurality of ribs are disposed between the central portion and the outer edge, and the plurality of ribs divide the plurality of nozzles into a plurality of groups, each set of nozzles and the steam chamber A steam flow path corresponds.
  • the number of the nozzles is set to 15, the number of the ribs is set to three, and the three ribs divide the 15 nozzles into three groups on average.
  • the nozzle includes a nozzle inlet and a nozzle outlet, the nozzle inlet and the nozzle outlet A flow path is formed between the shape of the Laval nozzle flow path.
  • a throat is formed in the flow passage, the flow passage is tapered from the nozzle inlet to the throat, and the throat is divergent from the throat to the nozzle outlet. And the flow path portion from the throat to the nozzle outlet is inclined toward the center of the nozzle diaphragm assembly unit body.
  • the outlet end of the nozzle diaphragm assembly unit body forms a circular recessed portion, and the nozzle outlet is in communication with the circular recessed portion, and a perimeter of the circular recessed portion Defined by the outer edge.
  • the center portion has a central through hole penetrating through the nozzle diaphragm assembly unit body, and the center through hole communicates with the circular recess portion.
  • the central portion and the outer edge are flush at the inlet end.
  • a connection between the central portion and the outer edge is provided with a plurality of ribs, the plurality of ribs dividing the plurality of nozzles into a plurality of groups, each set of nozzles and the steam chamber Corresponding to a steam flow path, the center portion, the outer edge and the rib are flush at the inlet end.
  • the present invention provides a nozzle baffle combination unit body of a steam turbine, which eliminates the conventional mode of the stator blade and the elimination of the support baffle and is mounted by welding. Drill directly on the partition using an integrated concept.
  • the flow path shape of the hole is a Laval nozzle flow path, the flow path portion from the nozzle inlet to the throat is tapered, and the flow path portion from the throat to the nozzle outlet is inclined and divergent toward the center of the nozzle diaphragm assembly unit body.
  • the degree of the drilled holes can be flexibly adjusted by the number of drilled holes and the control of the working fluid per share, such as the number of steam passages through the nozzles and the distribution of the nozzle flow paths.
  • the ribs to divide the nozzle into a plurality of groups, each group corresponding to a steam chamber flow passage, so that the nozzle diaphragm combination unit body can realize the full-circulation steam of the working medium and realize the partial steam entering of the working medium.
  • the nozzle diaphragm assembly unit body of the invention has the advantages of simple structure, convenient processing, low cost, simple maintenance, and the like, and these advantages are well adapted to the requirements of a small flow, low power waste heat steam turbine unit.
  • FIG. 1 is a schematic view of the inlet end of the nozzle diaphragm assembly unit body of the present invention.
  • FIG. 2 is a schematic view of the outlet end of the nozzle diaphragm assembly unit body of the present invention.
  • 3 is a cross-sectional view taken along line BB of FIG. 1.
  • FIG. 4 is a cross-sectional view of the A-A section of FIG. 1.
  • the present invention proposes a nozzle diaphragm assembly unit body 10 of a steam turbine, which is connected to a steam chamber of the steam turbine.
  • the nozzle spacer unit unit 10 is integrally formed with a plurality of through holes, for example, directly drilling the nozzle spacer unit unit 10 or forming a through hole by other molding methods.
  • Each of the through holes constitutes a steam nozzle 12 that communicates with the steam chamber.
  • the nozzle diaphragm assembly unit body 10 has a disk shape.
  • the nozzle diaphragm assembly unit body 10 has an inlet end 14 and an outlet end 16 which are in tight communication with the steam chamber.
  • the outlet end 16 can be matched with the vane gap so that the steam ejected through the steam nozzle 12 can be moved. Doing work on the leaves.
  • the inlet end 14 of the nozzle diaphragm assembly unit body 10 includes a central portion 18 and an outer rim 20, the central portion 18 being flush with the outer rim 20 at the inlet end 14.
  • the center portion 18 has a central through hole 19 extending through the nozzle diaphragm assembly unit body 10 for connecting with a shaft or for passing the shaft, and a sealing device between the shaft and the nozzle diaphragm assembly unit body.
  • An annular recess 22 is formed between the central portion 18 and the outer rim 20, and the nozzle 12 extends through the annular recess 22.
  • the plurality of nozzles 12 are distributed along the circumferential direction of the annular recess 22, for example, evenly along the circumferential direction of the annular recess 22.
  • a plurality of ribs 24 are connected between the central portion 18 and the outer edge 20, and a plurality of ribs 24 are disposed in the annular recessed portion 22 between the two adjacent nozzles 12, respectively.
  • Several nozzles 12 are divided into groups. Each set of nozzles communicates with a steam flow path of the steam chamber for the purpose of accurate steam distribution, so that the nozzle diaphragm assembly unit body 10 can achieve partial steam inlet and full steam inlet.
  • the central portion 18, the outer edge 20 and the plurality of ribs 24 are flush at the inlet end 14.
  • the number of nozzles 12 is set to 15, and the number of ribs 24 is set to three. The three ribs are evenly spaced on the annular recess 22, and the 15 nozzles 12 are equally divided into three groups of five each.
  • nozzles 12 and the ribs 24 may be set to other numbers according to actual design requirements, which is not limited by the present invention.
  • the steam outlet end 16 of the nozzle diaphragm assembly unit body 10 includes a circular recess 26, and the circumference of the circular recess portion 26 is defined by the outer edge 20.
  • the center through hole 19 of the center portion 18 and the nozzle 12 communicate with the circular recessed portion 26.
  • the outer edge 20 on the side of the outlet end 16 can function as a radial gas seal.
  • the nozzle 12 includes a nozzle inlet 30 and a nozzle outlet 32, and the nozzle inlet 30 is disposed in the nozzle diaphragm assembly unit body.
  • the inlet end 14 of the nozzle block 32 is disposed at the outlet end 16 of the nozzle diaphragm assembly unit body 10.
  • a flow passage 34 is formed between the nozzle inlet 30 and the nozzle outlet 32.
  • the flow passage 34 is shaped as a Laval nozzle flow passage.
  • the inner wall of the flow path 34 is a smooth surface, and a throat portion 36 is formed in the flow path 34.
  • the flow passage 34 is tapered from the nozzle inlet 30 to the throat portion 36, is diverging from the throat portion 36 to the nozzle outlet 32, and the flow passage portion from the throat portion 36 to the nozzle outlet 32 faces the nozzle diaphragm assembly unit body 10 The center position is tilted.
  • the nozzle outlet 32 communicates with the circular recessed portion 26, and a turbine blade is provided behind the circular recessed portion 26, and steam ejected from the nozzle outlet 32 acts to drive the turbine rotor blade to rotate.
  • the present invention provides a nozzle diaphragm assembly unit body of a steam turbine, which eliminates the conventional mode of the stator blade and the branching process for eliminating the support spacer and being mounted by welding. Drill directly on the partition using an integrated concept.
  • the flow path shape of the hole is a Laval nozzle flow path, the flow path portion from the nozzle inlet to the throat is tapered, and the flow path portion from the throat to the nozzle outlet is inclined and divergent toward the center of the nozzle diaphragm assembly unit body.
  • the degree of the drilled holes can be flexibly adjusted by the number of drilled holes and the control of the working fluid per share, such as the number of steam passages through the nozzles and the distribution of the nozzle flow paths.
  • the nozzle is divided into a plurality of groups by setting ribs, and each group corresponds to a steam chamber flow path.
  • the nozzle diaphragm combination unit body can realize the full-circulation steam of the working medium and realize the partial steam entering of the working medium.
  • the separator of the invention has the advantages of simple structure, convenient processing, low cost and convenient maintenance, and these advantages are well adapted to the requirements of small flow and low power waste heat steam turbine units.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne un corps unitaire d'ensemble plaque de séparation de buse d'une turbine à vapeur. Une pluralité de trous traversants sont formés d'un seul tenant dans le corps d'unité d'ensemble plaque de séparation de buse, et chacun des trous traversants forme une buse de vapeur en communication avec une chambre de vapeur de la turbine à vapeur. Le corps d'unité d'ensemble plaque de séparation de buse est pourvu d'une extrémité d'entrée de vapeur et d'une extrémité de sortie de vapeur. L'extrémité d'entrée de vapeur est en communication avec la chambre de vapeur et comprend une partie centrale et un bord extérieur. Une partie évidée annulaire est formée entre la partie centrale et le bord extérieur, et des buses pénètrent dans la partie évidée annulaire et sont réparties le long de la circonférence de la partie évidée annulaire Le corps d'unité d'ensemble plaque de séparation de buse de la présente invention présente les avantages d'être de structure simple, pratique à traiter, de faible coût, simple et pratique à entretenir et analogue, et ces avantages sont bien adaptés aux exigences des unités de turbine à vapeur pour petits flux et chaleur perdue de faible puissance.
PCT/CN2016/112683 2016-12-28 2016-12-28 Corps unitaire d'ensemble plaque de séparation de buse d'une turbine à vapeur WO2018119763A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/112683 WO2018119763A1 (fr) 2016-12-28 2016-12-28 Corps unitaire d'ensemble plaque de séparation de buse d'une turbine à vapeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/112683 WO2018119763A1 (fr) 2016-12-28 2016-12-28 Corps unitaire d'ensemble plaque de séparation de buse d'une turbine à vapeur

Publications (1)

Publication Number Publication Date
WO2018119763A1 true WO2018119763A1 (fr) 2018-07-05

Family

ID=62707779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/112683 WO2018119763A1 (fr) 2016-12-28 2016-12-28 Corps unitaire d'ensemble plaque de séparation de buse d'une turbine à vapeur

Country Status (1)

Country Link
WO (1) WO2018119763A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6416277B1 (en) * 1998-11-05 2002-07-09 Elliott Turbomachinery Co., Inc. Individually replaceable and reversible insertable steam turbine nozzle
EP2410138A1 (fr) * 2010-07-22 2012-01-25 Alstom Technology Ltd Agencement de flasques du moteur de turbine à gaz et son procédé de reéquipement
CN103422910A (zh) * 2013-08-22 2013-12-04 上海电气电站设备有限公司 一种汽轮机喷嘴及其制造方法
CN106437872A (zh) * 2016-12-28 2017-02-22 深圳智慧能源技术有限公司 蒸汽轮机的喷嘴隔板组合单元体

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6416277B1 (en) * 1998-11-05 2002-07-09 Elliott Turbomachinery Co., Inc. Individually replaceable and reversible insertable steam turbine nozzle
EP2410138A1 (fr) * 2010-07-22 2012-01-25 Alstom Technology Ltd Agencement de flasques du moteur de turbine à gaz et son procédé de reéquipement
CN103422910A (zh) * 2013-08-22 2013-12-04 上海电气电站设备有限公司 一种汽轮机喷嘴及其制造方法
CN106437872A (zh) * 2016-12-28 2017-02-22 深圳智慧能源技术有限公司 蒸汽轮机的喷嘴隔板组合单元体

Similar Documents

Publication Publication Date Title
US7018166B2 (en) Ducted wind turbine
JP3199013U (ja) インペラーの低乱流羽根車
AU2017379416B2 (en) A turbine
CN106437872A (zh) 蒸汽轮机的喷嘴隔板组合单元体
US20080141677A1 (en) Axial tangential radial on-board cooling air injector for a gas turbine
JP2015040566A5 (fr)
CA2511424A1 (fr) Structure de flux pour turbocompresseur
JP2016121690A (ja) エンジンおよび前記エンジンを作動させる方法
WO2013111620A1 (fr) Machine centrifuge pour fluide
US20180171804A1 (en) Turbine rotor blade arrangement for a gas turbine and method for the provision of sealing air in a turbine rotor blade arrangement
NZ602493A (en) Turbine with radial inlet and outlet rotor for use in bi-directional flows
US10677076B2 (en) Guide vane ring for a turbomachine
CN108060979B (zh) 燃气轮机及其旋流装置
US11585347B2 (en) Mixed-flow compressor configuration for a refrigeration system
CN103775135A (zh) 燃气涡轮和用于这样的燃气涡轮的涡轮叶片
GB1301002A (en) Improvements relating to fluid-flow machines
KR20180062383A (ko) 회전 기계용 가이드 베인 조립체 및 이를 조립하는 방법
JPH04228807A (ja) タービン段
WO2018119763A1 (fr) Corps unitaire d'ensemble plaque de séparation de buse d'une turbine à vapeur
RU2567524C2 (ru) Система и способ для отбора рабочей текучей среды от внутреннего объема турбомашины и турбомашина, содержащая такую систему
US20220186746A1 (en) Centrifugal or mixed-flow compressor including aspirated diffuser
CN206319913U (zh) 蒸汽轮机的喷嘴隔板组合单元体
CN208153067U (zh) 盘式透平的喷嘴结构
US6705829B1 (en) Cover for LP first stage diaphragm and method for improving inflow to first stage diaphragm
CN108368820B (zh) 用于水力涡轮或泵的转轮以及操作这种转轮的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16925545

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16925545

Country of ref document: EP

Kind code of ref document: A1