JPS58104308A - Nozzle diaphragm - Google Patents

Nozzle diaphragm

Info

Publication number
JPS58104308A
JPS58104308A JP20293981A JP20293981A JPS58104308A JP S58104308 A JPS58104308 A JP S58104308A JP 20293981 A JP20293981 A JP 20293981A JP 20293981 A JP20293981 A JP 20293981A JP S58104308 A JPS58104308 A JP S58104308A
Authority
JP
Japan
Prior art keywords
outer ring
diaphragm
casing
nozzle diaphragm
nozzle
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
Application number
JP20293981A
Other languages
Japanese (ja)
Inventor
Hiroshi Yagisawa
八木沢　宏
Masakuni Ando
安藤　政訓
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP20293981A priority Critical patent/JPS58104308A/en
Publication of JPS58104308A publication Critical patent/JPS58104308A/en
Pending legal-status Critical Current

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
    • 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

Landscapes

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

Abstract

PURPOSE:To reduce a steam reaction to support metal fixtures having function of positioning in the vertical direction by providing center pins which position each upper half and lower half of an outer ring of a nozzle diaphragm in the peripheral direction in relation to a casing respectively. CONSTITUTION:A nozzle diaphragm consisting of an outer ring 1, an inner ring 2 and many nozzle blades 3 provided between said rings 1 and 2 is supported in a predetermined position of a casing 4. At this time, in order to position the nozzle diaphragm in the peripheral direction in relation to the casing 4, center pins 7a, 7b are provided on the lower part of the lower half of the outer ring 1a and also on the upper part of the upper half of the outer ring 1b respectively, thus the diaphragm is fixed to the casing 4. Further, in order to position the diaphragm in the vertical direction, two support metal fixtures 8 are provided on the upper part of the lower half of the outer ring 1a. One metal fixture is inserted into a hole 11 on the lower half of the outer ring 1a, while the other fixture is supported in a notch 10 provided on a horizontal coupling face 9 of the casing 4. Thus, a steam reaction to the support metal fixtures 8 can be reduced.

Description

【発明の詳細な説明】 発明の技術分野 本発明は蒸気タービン等のノズルダイヤフラムに係シ、
脅にその支持金具の小型化構造の暎純化を図ったノズル
ダイヤフラムに関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a nozzle diaphragm of a steam turbine, etc.
This invention relates to a nozzle diaphragm whose supporting metal fittings are miniaturized and refined.

一般に蒸気タービン等のノズルダイヤフラムは、ｇｔ図
に示すようにノズルダイヤフラム外輪ｌとノズルダイヤ
フラム内輪２と、そＯｆ！ＩＫ設置され九多数のノズル
翼８とから構成され、ケーシング４の所定の位１１に支
持されている。そして蒸気は前記ノズルダイヤフラムの
ノズル翼畠を通過して羽根６に当たりロータ６ｔ−廻す
ようになっている。In general, the nozzle diaphragm of a steam turbine, etc., consists of a nozzle diaphragm outer ring l, a nozzle diaphragm inner ring 2, and a nozzle diaphragm inner ring 2, as shown in the gt diagram. It consists of nine nozzle blades 8 installed in IK, and is supported at a predetermined position 11 of the casing 4. The steam then passes through the nozzle blade ridge of the nozzle diaphragm and hits the blades 6, causing the rotor 6t to rotate.

従来の蒸気タービン等のノズルダイヤフラムはｌｓ！図
に示すようにノズルダイヤフラムケーシング４に対して
円周方向に位置決めするためノズルダイヤフラムの下手
外輪１６４２）底ｍＫ七ノツタービンを１１ｉ１配設し
てケーシング４に支持固定している。またノズルダイヤ
フラム會ケーシング４に対して上下方向に位置決めする
九めノズルダイヤ７ツムの下半外輪ｌａの両方の端上部
に５字形状のｇｌ−の支持金具８，８をそれぞれ配設し
ている。The nozzle diaphragm of conventional steam turbines etc. is ls! As shown in the figure, in order to position the nozzle diaphragm in the circumferential direction with respect to the casing 4, a lower outer ring 1642) of the nozzle diaphragm is provided with a bottom mK seven-note turbine 11i1 and is supported and fixed to the casing 4. In addition, 5-shaped GL-shaped support fittings 8, 8 are respectively arranged at the upper part of both ends of the lower half outer ring la of the 9th nozzle diamond 7 knob, which is positioned in the vertical direction with respect to the nozzle diaphragm casing 4. .

この支持金具８％８は下手外輪１１ＬＫボルト締めし、
突出部上ケーｖｙグ４の水平継手面９に設けた切欠１０
ＫｉｌＬ純支持されている。これらのセンターピン丁お
よび支持金ＡＩ、８によプ、ダイヤフラ＾外輪１はケー
７・ング４に対して位置決め支持されている。Tighten this support fitting 8%8 with the lower outer ring 11LK bolt,
Notch 10 provided in the horizontal joint surface 9 of the upper cage 4 of the protrusion
KillL has pure support. The diaphragm outer ring 1 is positioned and supported with respect to the case 7 and the ring 4 by means of these center pins and supports AI and 8.

背景技術の問題点 支持金具８はダイヤフラム外輪１の上下方向の位置決め
を容易にする他に、ロータ６の回転時にノズル翼ｌを通
過する蒸気の反動力とノズルダイヤ７ツムの自重に耐え
るように十分な強度を有するものにしなければならない
ので大型になる欠点があつ九、ｔんこの支持金具８．８
はノズルダイヤフラムの下半外輪１ａＫボルト締めされ
ているので定期検査時や補修時にボルトが焼付いて分解
困−となつ九シ分解不可能となる場合が多かった。Problems with the Background Art The support fitting 8 not only facilitates the vertical positioning of the diaphragm outer ring 1, but also withstands the reaction force of steam passing through the nozzle vane l when the rotor 6 rotates and the weight of the nozzle diamond 7 knob. Since it must have sufficient strength, it has the disadvantage of being large. 8.8
Since the lower half outer ring of the nozzle diaphragm is tightened with 1AK bolts, the bolts often seize during periodic inspections or repairs, making it difficult to disassemble.

おける欠点を除去し、蒸気反動力を分解し、支持金具の
小型化および構造の暎純化をはか９ノズルダイヤ７ツム
の分解を容易にしたノズルダイヤ７ツムを提供すること
を目的とする。It is an object of the present invention to provide a nozzle diamond 7-trim which eliminates the drawbacks of the 9-nozzle diamond 7-trim, decomposes the steam reaction force, downsizes the support fittings, and purifies the structure, and which facilitates the disassembly of the 9-nozzle diamond 7-trim.

発明Ｏａ＊ 本発明はノズルダイヤフラムの上半外輪をケーシングに
対して円周方向く位置決めする１ツタ−ビンｔ−前記上
半外輪の頂ｓＫ配設し、支持金＾の一端を外輪に嵌装し
て取付け、外輪から央出している他端をケーシングに離
線支持させて形成し九９、更に上半外輪にも同１１Ｋし
て支持金具ｔｔｋけて形成している。Invention Oa* This invention positions the upper half outer ring of the nozzle diaphragm in the circumferential direction with respect to the casing.The upper half outer ring of the nozzle diaphragm is positioned at the top sK of the upper half outer ring, and one end of the support metal ^ is fitted to the outer ring. The other end protruding from the center of the outer ring is supported off-line by the casing, and the upper half of the outer ring is also formed with a support metal fitting ttk made of the same 11K.

本発明においては、ノズルダイヤフラムに作用する蒸気
反動力は支持金具だけではなく上下８本のセンタービン
によっても支えられる。これにより支持金具に作用する
蒸気反動力が小さくなる。In the present invention, the steam reaction force acting on the nozzle diaphragm is supported not only by the support fittings but also by the eight upper and lower center bins. This reduces the steam reaction force acting on the support fittings.

ノズルダイヤフラムの分解は外輪に嵌装し九支持金具’
を抜き取ることにより行なわれる。To disassemble the nozzle diaphragm, fit the outer ring into the nine support brackets.
This is done by extracting the .

発明の実施例 以下１本発明を図面に示す実ＩＩ例によシ説明する。Examples of the invention Hereinafter, the present invention will be explained based on a practical example shown in the drawings.

本発明の一夷権例は、ｍｓ図においてノズルダイヤプラ
ム會ケーンング４に対して円周方向に位置決めするため
ノズルダイヤフラムの下半外輪ｌａの下部にセンタービ
ン７　ａ　ｔ−１個配設してケーシング４に指示固定し
、更にノズルダイヤフラムの上半外輪１ｂの頂部にセン
タービン？ｂｉ−１１１配設してケーシング４に指示固
定している。また。A preferred example of the present invention is that one center bin 7 a t- is disposed at the bottom of the lower half outer ring la of the nozzle diaphragm in order to position it in the circumferential direction with respect to the nozzle diaphragm caning 4 in the ms diagram. The direction is fixed to the casing 4, and the center bin is attached to the top of the upper half outer ring 1b of the nozzle diaphragm. bi-111 is arranged and fixed to the casing 4. Also.

ノズルダイヤフラム會ケーシング４に対して上下方向に
位置決めする九めノズルダイヤフラムの下半外輪１ａの
上部にビン形状の！個の支持金４８゜８ｔ″配設し、一
方をノズルダイヤフラムの下半外輪１ａに設けた孔１１
に嵌入し、他方をケーシング４の水平継手面９に設けた
切欠ｌＯに暎純叉持させているものである。Nozzle diaphragm A bottle-shaped upper part of the lower half outer ring 1a of the ninth nozzle diaphragm is positioned vertically with respect to the nozzle diaphragm casing 4. A hole 11 in which two supporting metals 48°8t'' are disposed, one of which is provided in the lower half outer ring 1a of the nozzle diaphragm.
The other end is held in a notch 10 provided in the horizontal joint surface 9 of the casing 4.

このようなノズルダイヤフラムはノズル翼８１Ｆ−通過
する蒸気反動力をノズルダイヤ７ツムの下半外輪１ａの
下部のセンタービン丁ａとノズルダイヤフラムの下半外
輪１ｂの上部のセンタービン丁ｂとに分散して受ける。Such a nozzle diaphragm disperses the reaction force of the steam passing through the nozzle blade 81F between the center bin a at the bottom of the lower half outer ring 1a of the nozzle diaphragm 7 and the center bin b at the upper part of the lower half outer ring 1b of the nozzle diaphragm. and receive it.

その九め支持金具８，８に作用する蒸気反動力は小さい
ので支持金具８゜８を小型化することができるとともに
ボルト締めする必要がないからビン形状等の学純な構造
にすることができ、定期検査時や補修時の分解がＩＦＪ
Ｉになる。Since the steam reaction force acting on the nine support fittings 8, 8 is small, the support fittings 8゜8 can be downsized, and since there is no need to tighten bolts, it can be made into an academically pure structure such as a bottle shape. , IFJ is used for disassembly during periodic inspections and repairs.
Become I.

本発明の他の実施例は第４図において、ノズルダイヤフ
ラムをケーシング４に対して上下方向に位置決めする九
めノズルダイヤフラムの下半外輪１ａの上部に切欠１２
を設け、ノーその切欠１２にＬ字形の！個の支持金Ａ８
．８のＬ字形の一辺１３を嵌装し、Ｌ字形の他辺の突出
端１４をケーシング４の切欠１０に＃Ｌ純支持し九％Ｏ
である。Another embodiment of the present invention is shown in FIG. 4, in which a notch 12 is provided at the upper part of the lower half outer ring 1a of the ninth nozzle diaphragm for vertically positioning the nozzle diaphragm with respect to the casing 4.
, and the notch 12 is L-shaped! Support amount A8
．． One side 13 of the L-shape No. 8 is fitted, and the protruding end 14 of the other side of the L-shape is #L-purely supported in the notch 10 of the casing 4.
It is.

仁のようなノズルダイヤフラムは前記実権例と同様に、
支持金Ａ８の小型化と構造の率純化ができる。そして定
期検査時や補修時Ｏ分解が容易になる。The nozzle diaphragm is similar to the above example,
The supporting metal A8 can be downsized and the structure can be simplified. This also facilitates O disassembly during periodic inspections and repairs.

本発明の更に他の実権例は第６図において、ノズルダイ
ヤフラムをケーシング４に対して上下方向に位置決めす
るため、ノズルダイヤフラムの上半外輪１ｌｌｌの下部
にも支持金Ａｈ　ｓｔ配般し九ものである。この支持金
具８．Ｉは固定板！ｓによシノズルダイヤフラムの上半
外輪１１の下ｉ１に固定されている。Still another practical example of the present invention is shown in FIG. 6, in which a support metal Ah st is also disposed at the lower part of the upper half outer ring 1ll of the nozzle diaphragm in order to position the nozzle diaphragm in the vertical direction with respect to the casing 4. be. This support metal fitting8. I is a fixed plate! s is fixed to the lower i1 of the upper half outer ring 11 of the nozzle diaphragm.

このようなノズルダイヤ７２ムは蒸気反動力およびノズ
ルダイヤ７ツムの自重ｔｊｌ！に分散することができる
ので一層支持金＾の小型化と構造の一純化ができるもの
でるる。Such a nozzle diamond 72mm has steam reaction force and its own weight tjl! Since the supporting metal can be dispersed into several parts, it is possible to further downsize the supporting metal and simplify the structure.

本発明はノズルダイヤフラムの上半外輪をケーシングに
対して円周方向に位置決めするセンタービンｔ−前記上
半の外輪の上部に配設したので、ノズルダイヤフラムを
ケーシングに対して上下方向に位置決めする支持金ＡＫ
作用する蒸気反動力が小さくなり、よって支持金具を小
型化することができ構造％率純化することができる。ま
九構造を重線化し九支持金具を外輪に鎖装して埴付ける
ことによ如定期検査時や補修時の分解が答島にな〉。The present invention has a center bin t for positioning the upper half outer ring of the nozzle diaphragm in the circumferential direction with respect to the casing, and a support for positioning the nozzle diaphragm in the vertical direction relative to the casing. Gold AK
The steam reaction force that acts becomes smaller, so the supporting metal fittings can be downsized and the structure can be simplified. By making the structure heavy and chaining and attaching the support metal fittings to the outer ring, disassembly during periodic inspections and repairs can be made easier.

更に支持金具を上半外輪に％設けることにより一層叉持
金具を小型に形成することができる。これらにより、ノ
ズルダイヤフラムの製作組立分解が容易とな〉、またコ
ストも低摩となる。Furthermore, by providing the supporting metal fitting on the upper half outer ring, the holding metal fitting can be made even more compact. These make it easy to manufacture, assemble and disassemble the nozzle diaphragm, and the cost is also low.

【図面の簡単な説明】[Brief explanation of the drawing]

１１１図は従来の蒸慨タービｙのノズルダイヤフラムの
縦断面部分図、第２図はｇｔ図の正面図。 第８図は本発＃１の一実施例を示すノズルダイヤフラム
の正面図、第４同時本発明の他の＊ｔｔｍｓｔ示す第畠
図同様の正面図、第６図は本発明の頁に他の実施１１を
示す第８図同様の正面図でおる。 ｌ・・・ノズルダイヤフラム外輪、！＆・−ノズルダイ
ヤフラムの下手の外輪、１）−ノズルダイヤフラムの上
半の外輪、２・・・ノズルダイヤフラムＯ内輪、ト・・
ノズル翼、４・・・ケーシング、６・・・羽根。 ６・・・ロータ、丁・・・センタービン、フローセンタ
ービン、７１・・・センタービン、ト・・支持金具１ｇ
・−水平継手面、　１０−・・切欠、１１一孔、１Ｆ・
・切欠、１３・・・Ｌ字形の一辺、　１４・・・突出端
、１トー固定板。 出願人代理人　　猪　股　　　清 第１図 第２図 第３図 第４図 第５図FIG. 111 is a vertical cross-sectional partial view of a nozzle diaphragm of a conventional steaming turbine Y, and FIG. 2 is a front view of the GT diagram. FIG. 8 is a front view of a nozzle diaphragm showing one embodiment of the present invention #1, a front view similar to the fourth simultaneous present invention *ttmst, and FIG. 6 is a front view similar to the fourth embodiment of the present invention. It is a front view similar to FIG. 8 showing the 11th embodiment. l...Nozzle diaphragm outer ring! &... - Lower outer ring of nozzle diaphragm, 1) - Upper outer ring of nozzle diaphragm, 2... Inner ring of nozzle diaphragm O,...
Nozzle blade, 4...casing, 6...blade. 6... Rotor, D... Center bin, Flow center bin, 71... Center bin, G... Supporting metal fittings 1g
・-Horizontal joint surface, 10-...notch, 11 hole, 1F・
・Notch, 13...One side of L-shape, 14...Protruding end, 1 toe fixing plate. Applicant's agent Kiyoshi Inomata Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

【特許請求の範囲】 １、下半外輪と上半外輪とで形成され九ダイヤフラム外
輪がケーシング内に、ｗｌｌｆ！下半外輪の底部に設は
友センタービンと前記下半外輪の両方の上端部にそれぞ
れ設は九支持金具とによシ。 位置決め支持されているノズルダイヤフラムにおいて、
前記上半外輪の頂部にダイヤフラム外輪を位置決めする
センタービンを設け、前記各支持金具はそれぞれ一端を
前記下半外輪に嵌装されているとと４にその下半外輪か
ら突出している他端を前記ケーシングに曝純支持されて
いることを特徴とするノズルダイヤフラム。 λ下半外輪と上半外輪とで形成されたダイヤフラム外輪
がケーシング内に、前記下半外輪の底部に設けたセンタ
ービンと前記下半外輪の両方の上４部にそれぞれ設は九
支持金具とにより、位置決め支持されているノズルダイ
ヤフラムにおいて、ｍ記上半外輪の頂部にダイヤフラム
外輪を位置決めする七ｙメービＶｆ設け、前記上半外輪
の両方の下端部にそれぞれ支持金具を設け、前記４個の
各支持金具はそれぞれ一端を一記外輪に嵌装されている
とともにその外輪から突出している他端を前記ケーシン
グに曝純叉持されていることを特徴とするノズルダイヤ
フラム・[Claims] 1. A nine-diaphragm outer ring formed of a lower half outer ring and an upper half outer ring is disposed within the casing, wllf! A center pin is installed at the bottom of the lower half outer ring, and nine support fittings are installed at the upper ends of both the lower half outer rings. In the nozzle diaphragm that is supported in position,
A center pin for positioning the diaphragm outer ring is provided at the top of the upper half outer ring, and each of the supporting metal fittings has one end fitted into the lower half outer ring and the other end protruding from the lower half outer ring. A nozzle diaphragm, characterized in that it is directly supported by the casing. A diaphragm outer ring formed by a lower half outer ring and an upper half outer ring is provided in the casing, and a center bin provided at the bottom of the lower half outer ring and nine support fittings are respectively provided at the upper four parts of both the lower half outer rings. Accordingly, in the nozzle diaphragm that is positioned and supported, a seven-y meby Vf for positioning the diaphragm outer ring is provided on the top of the upper half outer ring m, support metal fittings are provided at the lower ends of both of the upper half outer rings, and the four A nozzle diaphragm characterized in that each of the supporting metal fittings has one end fitted into the outer ring, and the other end protruding from the outer ring is exposed and supported by the casing.
JP20293981A 1981-12-16 1981-12-16 Nozzle diaphragm Pending JPS58104308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20293981A JPS58104308A (en) 1981-12-16 1981-12-16 Nozzle diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20293981A JPS58104308A (en) 1981-12-16 1981-12-16 Nozzle diaphragm

Publications (1)

Publication Number Publication Date
JPS58104308A true JPS58104308A (en) 1983-06-21

Family

ID=16465659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20293981A Pending JPS58104308A (en) 1981-12-16 1981-12-16 Nozzle diaphragm

Country Status (1)

Country Link
JP (1) JPS58104308A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02108802A (en) * 1988-09-06 1990-04-20 Westinghouse Electric Corp <We> Gas turbine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02108802A (en) * 1988-09-06 1990-04-20 Westinghouse Electric Corp <We> Gas turbine

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