JPH09112204A - Vertical bolt fastening structure for coupling type 180 deg. split static vane - Google Patents
Vertical bolt fastening structure for coupling type 180 deg. split static vaneInfo
- Publication number
- JPH09112204A JPH09112204A JP29495995A JP29495995A JPH09112204A JP H09112204 A JPH09112204 A JP H09112204A JP 29495995 A JP29495995 A JP 29495995A JP 29495995 A JP29495995 A JP 29495995A JP H09112204 A JPH09112204 A JP H09112204A
- Authority
- JP
- Japan
- Prior art keywords
- static vane
- vane
- ring structure
- ring
- coupling type
- 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.)
- Pending
Links
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は蒸気タービンの連結
型１８０°分割静翼を上下からボルト締めした構造に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure in which connected 180 ° split vanes of a steam turbine are bolted from above and below.
【０００２】[0002]
【従来の技術】仕切板静翼に現状求められている要件は
仕切板静翼を連結して剛性を出し静翼の撓み量及び応力
を極力低減し翼列を短かくコンパクトにすることにあ
る。2. Description of the Related Art The presently required requirements for partition vanes are to connect the partition vanes for rigidity to reduce the amount of bending and stress of the vanes as much as possible and to make the blade row short and compact. .
【０００３】ところで現状の静翼の車室への取り付け
は、下半静翼は下半車室に、上半静翼は上半車室に取り
付けられている。In the current installation of the stationary vanes in the vehicle compartment, the lower half stationary blade is mounted in the lower half vehicle compartment, and the upper half stationary blade is mounted in the upper half vehicle compartment.
【０００４】これは、構造上、車室を上下一体型に出来
ないため、静翼環も１８０°分割されたためと、組立
時、静翼を車室溝に静合させるのにやり易くするためで
ある。This is because, because of the structure, the casing cannot be integrated into the upper and lower parts, the stator vane ring is also divided by 180 °, and it is easy to fit the stator vane into the casing groove during assembly. is there.
【０００５】[0005]
【発明が解決しようとする課題】前述したような従来技
術のように、静翼の車室への取り付けが上半車室、下半
車室に別々に取り付けられる構造にあっては、静翼の剛
性を上げ撓み量及び応力を低減するためには弊害があり
コンパクト化を阻止する要因となる。As in the prior art as described above, in the structure in which the vanes are attached to the vehicle compartment separately in the upper half compartment and the lower half compartment, the vane In order to increase the rigidity and reduce the amount of bending and the stress, there is an adverse effect, which becomes a factor to prevent the size reduction.
【０００６】また開放点検時は上半車室をトンボ（反転
し水平面を上面とする作業で危険を伴う）する必要があ
るためタービン建屋の天井を高くしたり、クレーンの容
量を増大させる必要がある。Further, at the time of overhaul inspection, it is necessary to raise the ceiling of the turbine building or increase the capacity of the crane because it is necessary to make a dragonfly mark in the upper half vehicle compartment (it is dangerous when the work is inverted and the horizontal surface is the upper surface). is there.
【０００７】本発明はこれらの各不具合点を解消するこ
とを目的としている。The present invention aims to solve each of these problems.
【０００８】[0008]
【課題を解決するための手段】前記目的を達成するため
の構成として本発明の連結型１８０°分割静翼の上下ボ
ルト締め構造は、蒸気タービンの連結型１８０°分割静
翼の上下締めにおいて、車室内に配置される１８０°分
割半リング構造の静翼の上下を上半部側から垂直方向に
穴付ボルトにて合体し３６０°リング構造の静翼環とな
すとともに静翼下半部の合せ面の外周から垂直下にキー
を取り付けたことを特徴としている。As a structure for achieving the above-mentioned object, the vertical bolting structure for connecting type 180 ° split stationary blades of the present invention is as follows: The top and bottom of the 180 ° split half-ring structure stator vanes arranged in the vehicle interior are united vertically from the upper half with bolts with holes to form a 360 ° ring structure stator vane ring, and the lower half of the stator vane is aligned. The feature is that a key is attached vertically downward from the outer periphery of the surface.
【０００９】[0009]
【発明の実施の形態】以下図面により本発明の好適と思
われる実施の形態の一例について説明する。図１は連結
型１８０°分割静翼の平面図、図２は同立面図、図３は
同側面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a connected-type 180 ° split vane, FIG. 2 is an elevational view, and FIG. 3 is a side view thereof.
【００１０】なお全図にわたって同一部品には同一符号
を付している。The same parts are designated by the same reference numerals throughout the drawings.
【００１１】これらの図において蒸気タービンの車室１
Ａには連結型１８０°半リング構造の下半部静翼２Ａが
軸方向を静合し、ラジアル方向は図１に示すような隙間
Ｃを付けて嵌められている。In these drawings, a steam turbine casing 1
A lower half stationary vane 2A of the connection type 180 ° half ring structure is axially fitted to A, and is fitted in the radial direction with a gap C as shown in FIG.
【００１２】連結型１８０°半リング構造の下半部静翼
２Ａは図２に示すように同様の半リング構造の上半部静
翼２Ｂから穴付ボルト３によって上下静翼２Ａ，２Ｂが
合体し、３６０°リング構造の静翼環を構成している。As shown in FIG. 2, the lower half stationary vane 2A of the connected type 180 ° half ring structure has upper and lower stationary vanes 2A and 2B joined together by a bolt 3 with holes from the upper half stationary vane 2B of the same half ring structure. And constitutes a stationary blade ring having a 360 ° ring structure.
【００１３】また下半部静翼２Ａには、上下にライナー
４Ａ，４Ｂを入れてキー５が図１に示す車室溝６に全周
隙間を設けて取り付けられている。Further, liners 4A and 4B are inserted in the upper and lower parts of the lower half vane 2A, and a key 5 is attached to the vehicle interior groove 6 shown in FIG.
【００１４】このように構成したことにより連結型静翼
の１８０°半リング構造をボルト締めにより３６０°リ
ング構造とすることが可能になり剛性が上がり撓み量及
び応力を低減することができる。With this structure, the 180 ° half ring structure of the connection type stationary blade can be bolted to a 360 ° ring structure, and the rigidity is increased and the amount of bending and stress can be reduced.
【００１５】また３６０°リング構造とすることで静翼
環に回転方向の荷重がかかることになるが、回転方向の
荷重に対してはキーと車室溝とによって受け止められ
る。Further, by adopting the 360 ° ring structure, a load in the rotating direction is applied to the stationary blade ring, but the load in the rotating direction is received by the key and the vehicle compartment groove.
【００１６】従って静翼の信頼性が著しく向上し静翼の
コンパクト化への可能性も高まる。Therefore, the reliability of the vane is significantly improved, and the possibility of downsizing the vane is also increased.
【００１７】また３６０°リング構造としたことによっ
て上半車室を反転する必要もなくなり、危険の回避、建
屋やクレーンの容量を削減できるので大巾なコスト低減
となる。Further, the 360 ° ring structure eliminates the need to invert the upper half vehicle compartment, avoids danger, and reduces the capacity of the building and crane, resulting in a significant cost reduction.
【００１８】[0018]
【発明の効果】以上説明したように、本発明の連結型１
８０°分割静翼の上下ボルト締め構造によれば静翼の強
度信頼性が向上するとともに上半車室は反転の必要が無
く建屋やクレーンの容量を削減できるので危険の回避、
大巾なコスト削減に寄与する効果は大きい。As described above, the connection type 1 of the present invention
The upper and lower bolt tightening structure of the 80 ° split vanes improves the strength reliability of the vanes and reduces the capacity of the building and crane without the need for reversing the upper half vehicle compartment, thus avoiding danger.
The effect of greatly reducing costs is great.
【図１】本発明の好適な実施形態の一例に係る静翼の平
面図である。FIG. 1 is a plan view of a vane according to an example of a preferred embodiment of the present invention.
【図２】同静翼の立面図である。FIG. 2 is an elevation view of the stationary vane.
【図３】同静翼の側面図である。FIG. 3 is a side view of the stationary vane.
１Ａ，１Ｂ 車室 ２Ａ，２Ｂ 上下静翼 ３ 穴付ボルト ４Ａ，４Ｂ ライナー ５ キー ６ 車室溝 Ｃ 隙間 1A, 1B Cabin 2A, 2B Upper and lower stationary blades 3 Bolt with hole 4A, 4B Liner 5 Key 6 Cabin groove C Gap
Claims (1)
の上下締めにおいて、車室内に配置される１８０°分割
半リング構造の静翼の上下を上半部側から垂直方向に穴
付ボルトにて合体し３６０°リング構造の静翼環となす
とともに静翼下半部の合せ面の外周から垂直下にキーを
取り付けたことを特徴とする連結型１８０°分割静翼の
上下ボルト締め構造。1. In vertical tightening of a connected 180 ° split vane of a steam turbine, the upper and lower sides of a vane of a 180 ° split half ring structure arranged inside a vehicle are vertically bolted from the upper half side. The vertical bolting structure of the connecting type 180 ° split vane is characterized in that a key is attached vertically downward from the outer periphery of the mating surface of the lower half of the vane, and is joined together to form a vane ring having a 360 ° ring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29495995A JPH09112204A (en) | 1995-10-19 | 1995-10-19 | Vertical bolt fastening structure for coupling type 180 deg. split static vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29495995A JPH09112204A (en) | 1995-10-19 | 1995-10-19 | Vertical bolt fastening structure for coupling type 180 deg. split static vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09112204A true JPH09112204A (en) | 1997-04-28 |
Family
ID=17814518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29495995A Pending JPH09112204A (en) | 1995-10-19 | 1995-10-19 | Vertical bolt fastening structure for coupling type 180 deg. split static vane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09112204A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400801C (en) * | 2005-05-16 | 2008-07-09 | 三菱重工业株式会社 | Turbine envelope structure |
| US10233770B2 (en) | 2014-01-27 | 2019-03-19 | Mitsubishi Hitachi Power Systems, Ltd. | Position adjustment device, rotating machine provided with same, and position adjustment method |
-
1995
- 1995-10-19 JP JP29495995A patent/JPH09112204A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400801C (en) * | 2005-05-16 | 2008-07-09 | 三菱重工业株式会社 | Turbine envelope structure |
| US7581922B1 (en) | 2005-05-16 | 2009-09-01 | Mitsubishi Heavy Industries, Ltd. | Turbine casing structure |
| US10233770B2 (en) | 2014-01-27 | 2019-03-19 | Mitsubishi Hitachi Power Systems, Ltd. | Position adjustment device, rotating machine provided with same, and position adjustment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19991207 |