WO2020031625A1 - 回転機械及びシール部材 - Google Patents
回転機械及びシール部材 Download PDFInfo
- Publication number
- WO2020031625A1 WO2020031625A1 PCT/JP2019/027905 JP2019027905W WO2020031625A1 WO 2020031625 A1 WO2020031625 A1 WO 2020031625A1 JP 2019027905 W JP2019027905 W JP 2019027905W WO 2020031625 A1 WO2020031625 A1 WO 2020031625A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casing
- seal
- blade
- inner peripheral
- rotor
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4472—Labyrinth packings with axial path
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/005—Sealing means between non relatively rotating elements
-
- 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
-
- 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
-
- 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
- F01D25/246—Fastening of diaphragms or stator-rings
-
- 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
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
-
- 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
-
- 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
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
-
- 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
- F05D2240/00—Components
- F05D2240/55—Seals
Definitions
- a sealing device is provided between the tip of the bucket and the casing in order to suppress the axial leakage flow of steam between the casing and the tip of the bucket.
- a labyrinth seal is applied to this sealing device.
- the labyrinth seal is configured such that a plurality of seal fins are provided on the tip of the rotor blade and on the inner surface of the casing.
- a pressure loss is generated by forming a gap between the plurality of seal fins and the inner surface of the casing or the tip of the rotor blade, and the pressure loss suppresses a steam leakage flow in the axial direction.
- the end of the seal member covers the caulking recess, the caulking recess can be appropriately covered with a simple structure.
- a predetermined gap is provided between the end of the seal member in the fluid flow direction and the stationary blade.
- the seal member since a flat surface is provided by the seal member, the fluid leaking from the sealing device flows smoothly through the flat surface, so that the leakage flow of the fluid can smoothly merge with the main flow of the fluid.
- the seal member according to the present invention is characterized in that D3 ⁇ D2, where D3 is the distance between the upstream end of the seal portion and the most upstream fin.
- the stationary blade 13 has a proximal end located outside the radial direction R fixed to the inner peripheral portion of the casing 11, while the moving blade 14 has a proximal end located inside the radial direction R having the outer peripheral portion of the rotor 12.
- the casing 11 Fixed to the part. That is, the casing 11 is provided with wing mounting grooves 31 as mounting recesses in the inner peripheral portion along the radial direction R and continuously along the circumferential direction. Further, the casing 11 has a caulking groove 32 as a caulking recess in the inner peripheral portion along the radial direction R and along the circumferential direction.
- the caulking grooves 32 are provided upstream of the blade mounting grooves 31 in the steam flow direction A1 at positions adjacent to the blade mounting grooves 31 and communicate with each other.
- the steam S when the steam S is supplied to the inside of the casing 11 and the bucket 14 rotates, the steam flows from the high pressure side H to the low pressure side L along the steam flow direction A1. At this time, the steam S flows so that the main flow passes through the stationary blade 13 and the moving blade 14, and a part of the steam S flows to the sealing device 15 provided between the casing 11 and the tip of the moving blade 14. Although the sealing device 15 suppresses the leakage of the steam S, a part of the sealing device 15 leaks to generate the leaking steam S1.
- FIG. 4 is a schematic diagram for explaining the configuration of the seal member of the present embodiment.
- three fins 41d and 41e are provided, the most upstream fin 41d-1 provided on the upstream end (left end in FIG. 4) of the seal portion 41c, and the downstream end (see FIG. 4) of the seal portion 41c.
- a rightmost fin 41d2 is provided on the (right end) side, and a fin 41e located between the most upstream fin 41d-1 and the most downstream fin 41d-2. If the first distance between the most upstream fin 41d-1 and the most downstream fin 41d-2 is D1, and the second distance between the most downstream fin 41d-2 and the downstream end of the seal portion 41c is D2, D1 ⁇ 0.5 ⁇ D2 Is set to
- the stationary blade 13 is fixed to the inner peripheral portion of the casing 11 by engaging the caulking member 33 with the caulking groove 32 and the blade root portion 13 a of the stationary blade 13.
- Seal ring The 41 and 51 mounted to cover at least a portion of the caulking groove 32 by the seal rings 41 and 51.
- a predetermined gap G1 is provided between the end of the seal rings 41 and 51 in the steam flow direction A1 and the stationary blade 13. Therefore, even if the casing, the stationary blades 13 and the seal rings 41 and 51 are thermally expanded, interference of the seal rings 41 and 51 with other members due to the predetermined gap G1 is suppressed, and deformation of the seal rings 41 and 51 is suppressed. can do.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
Description
D1×0.5<D2
に設定される。
D3<D2
に設定される。
なお、このD1,D2,D3は、最上流フィン41d-1や最下流フィン41d-2における蒸気Sの流れ方向の中心位置からの長さである。
11 ケーシング
11a 内周面
12 ロータ
13 静翼
13a 翼根部
13b 静翼本体
13c 係止段付部
14 動翼
14a 動翼本体
14b シュラウド
14c フィン
14d 凸部
14e 下流端
15,50 シール装置
20 軸受
21 ロータディスク
22 蒸気供給口
23 蒸気通路
24 翼列部
25 排気室
26 蒸気排出口
27 シール部材
31 翼取付溝(取付凹部)
32 コーキング溝(コーキング凹部)
32a 第1溝
32b 第2溝
32c 係止溝
33 コーキング部材
33a 挿入部
33b 係止部
41,51 シールリング(シール部材)
41a,51a 取付部
41b,51b 連結部
41c,51c シール部
41d,51d フィン
41d-1 最上流フィン
41d-2 最下流フィン
41f 突出部
42 シール取付溝
42a,52a 第1溝
42b,52b 第2溝
42c 切欠部
43,44,53,54 平坦面
A 軸方向
A1 蒸気流れ方向
R 径方向
G1,G2 所定隙間
S 蒸気(流体)
S1 漏れ蒸気
D1 第1距離
D2 第2距離
D3 第3距離
Claims (10)
- 中空形状をなすケーシングと、
前記ケーシング内に回転自在に支持されるロータと、
前記ケーシングの内周部に固定される静翼と、
前記ロータの外周部に前記静翼に対して前記ロータの軸方向にずれて固定される動翼と、
前記ケーシングの内周部と前記動翼の先端部との間に配置されるシール装置と、
を備え、
前記ケーシングは、内周部に取付凹部が設けられると共に、前記取付凹部に隣接してコーキング凹部が設けられ、
前記静翼は、基端部が前記取付凹部に装着され、コーキング部材が前記コーキング凹部及び前記静翼の基端部に係止することで前記ケーシングの内周部に固定され、
前記シール装置は、前記ケーシングの内周部に装着されるシール部材を有し、前記シール部材は、前記コーキング凹部の少なくとも一部を被覆する、
ことを特徴とする回転機械。 - 前記コーキング凹部は、前記取付凹部より流体の流れ方向の上流側に設けられ、前記シール部材における流体の流れ方向の下流側の端部が前記コーキング凹部を被覆することを特徴とする請求項1に記載の回転機械。
- 前記シール部材における流体の流れ方向の端部と、前記静翼との間に所定隙間が設けられることを特徴とする請求項1または請求項2に記載の回転機械。
- 複数段の前記静翼の間に前記シール部材により前記ロータの軸方向に沿う平坦面が設けられることを特徴とする請求項3に記載の回転機械。
- 前記シール部材の平坦面は、前記ケーシングの内周面と段差なく連続されることを特徴とする請求項4に記載の回転機械。
- ケーシングの内周部と動翼の先端部との間に配置されるシール部材であって、
前記ケーシングの内周部に装着される取付部と、
前記取付部の径方向内方に設けられるシール部と、
前記シール部から径方向内方に突出して流体の流れ方向に所定間隔を空けて設けられる複数のフィンと、
を備え、
前記複数のフィンのうちの最上流フィンと最下流フィンとの距離をD1とし、前記最下流フィンと前記シール部の下流端との距離をD2とすると、
D1×0.5<D2
であることを特徴とするシール部材。 - 前記シール部の上流端と前記最上流フィンとの距離をD3とすると、
D3<D2
であることを特徴とする請求項6に記載のシール部材。 - 前記シール部は、ケーシングの内周部に組付けられた組立状態で、前記動翼の下流端より下流に延びる突出部を有することを特徴とする請求項6または請求項7に記載のシール部材。
- 前記突出部は、前記組立状態で径方向外方にキャビティが設けられることを特徴とする請求項8に記載のシール部材。
- 前記シール部は、前記突出部より上流だけに前記複数のフィンが設けられることを特徴とする請求項8または請求項9に記載のシール部材。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/261,965 US11365646B2 (en) | 2018-08-08 | 2019-07-16 | Rotary machine and seal member |
CN201980050093.XA CN112513426B (zh) | 2018-08-08 | 2019-07-16 | 旋转机械及密封部件 |
KR1020217002028A KR102509379B1 (ko) | 2018-08-08 | 2019-07-16 | 회전 기계 및 시일 부재 |
DE112019003949.0T DE112019003949T5 (de) | 2018-08-08 | 2019-07-16 | Drehmaschine und Dichtungselement |
JP2020536405A JP7041824B2 (ja) | 2018-08-08 | 2019-07-16 | 回転機械 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018149446 | 2018-08-08 | ||
JP2018-149446 | 2018-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020031625A1 true WO2020031625A1 (ja) | 2020-02-13 |
Family
ID=69413459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/027905 WO2020031625A1 (ja) | 2018-08-08 | 2019-07-16 | 回転機械及びシール部材 |
Country Status (6)
Country | Link |
---|---|
US (1) | US11365646B2 (ja) |
JP (1) | JP7041824B2 (ja) |
KR (1) | KR102509379B1 (ja) |
CN (1) | CN112513426B (ja) |
DE (1) | DE112019003949T5 (ja) |
WO (1) | WO2020031625A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2021199718A1 (ja) * | 2020-03-30 | 2021-10-07 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7146670B2 (ja) * | 2019-02-22 | 2022-10-04 | 三菱重工業株式会社 | タービンロータの固定装置、これを備えたタービンモジュール、及びタービンモジュールの輸送方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0227102A (ja) * | 1988-06-03 | 1990-01-29 | Westinghouse Electric Corp <We> | 蒸気タービン・シリンダの静翼の再生利用方法 |
US5632598A (en) * | 1995-01-17 | 1997-05-27 | Dresser-Rand | Shrouded axial flow turbo machine utilizing multiple labrinth seals |
JP2013194519A (ja) * | 2012-03-15 | 2013-09-30 | Mitsubishi Heavy Ind Ltd | タービン |
JP2016138483A (ja) * | 2015-01-27 | 2016-08-04 | 三菱日立パワーシステムズ株式会社 | タービン |
JP2017160827A (ja) * | 2016-03-09 | 2017-09-14 | 三菱日立パワーシステムズ株式会社 | 回転機械のシール装置及び回転機械 |
Family Cites Families (10)
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DE3333436C1 (de) * | 1983-09-16 | 1985-02-14 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Einrichtung zur Axial- und Umfangssicherung von statischen Gehaeusebauteilen fuer Stroemungsmaschinen |
JPH0493573U (ja) | 1990-12-28 | 1992-08-13 | ||
JPH08200003A (ja) * | 1995-01-23 | 1996-08-06 | Hitachi Ltd | タービン動翼 |
GB2307520B (en) * | 1995-11-14 | 1999-07-07 | Rolls Royce Plc | A gas turbine engine |
RU2272151C2 (ru) * | 2000-12-28 | 2006-03-20 | Альстом Текнолоджи Лтд | Лопатка статора осевой турбины |
KR20040093573A (ko) | 2003-04-30 | 2004-11-06 | 김두운 | 인터넷을 이용한 전생연분 채팅 서비스 방법 |
US8602737B2 (en) * | 2010-06-25 | 2013-12-10 | General Electric Company | Sealing device |
JP5567077B2 (ja) * | 2012-08-23 | 2014-08-06 | 三菱重工業株式会社 | 回転機械 |
JP5993032B2 (ja) * | 2012-12-13 | 2016-09-14 | 三菱日立パワーシステムズ株式会社 | 回転流体機械 |
EP3141698A1 (en) * | 2015-09-10 | 2017-03-15 | Siemens Aktiengesellschaft | Arrangement for a gas turbine |
-
2019
- 2019-07-16 US US17/261,965 patent/US11365646B2/en active Active
- 2019-07-16 DE DE112019003949.0T patent/DE112019003949T5/de active Pending
- 2019-07-16 WO PCT/JP2019/027905 patent/WO2020031625A1/ja active Application Filing
- 2019-07-16 JP JP2020536405A patent/JP7041824B2/ja active Active
- 2019-07-16 KR KR1020217002028A patent/KR102509379B1/ko active IP Right Grant
- 2019-07-16 CN CN201980050093.XA patent/CN112513426B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0227102A (ja) * | 1988-06-03 | 1990-01-29 | Westinghouse Electric Corp <We> | 蒸気タービン・シリンダの静翼の再生利用方法 |
US5632598A (en) * | 1995-01-17 | 1997-05-27 | Dresser-Rand | Shrouded axial flow turbo machine utilizing multiple labrinth seals |
JP2013194519A (ja) * | 2012-03-15 | 2013-09-30 | Mitsubishi Heavy Ind Ltd | タービン |
JP2016138483A (ja) * | 2015-01-27 | 2016-08-04 | 三菱日立パワーシステムズ株式会社 | タービン |
JP2017160827A (ja) * | 2016-03-09 | 2017-09-14 | 三菱日立パワーシステムズ株式会社 | 回転機械のシール装置及び回転機械 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2021199718A1 (ja) * | 2020-03-30 | 2021-10-07 |
Also Published As
Publication number | Publication date |
---|---|
KR102509379B1 (ko) | 2023-03-14 |
US11365646B2 (en) | 2022-06-21 |
KR20210021567A (ko) | 2021-02-26 |
DE112019003949T5 (de) | 2021-04-15 |
US20210293153A1 (en) | 2021-09-23 |
JP7041824B2 (ja) | 2022-03-25 |
CN112513426A (zh) | 2021-03-16 |
CN112513426B (zh) | 2023-05-23 |
JPWO2020031625A1 (ja) | 2021-08-02 |
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