JPS58143101A - Steam turbine - Google Patents
Steam turbineInfo
- Publication number
- JPS58143101A JPS58143101A JP2587182A JP2587182A JPS58143101A JP S58143101 A JPS58143101 A JP S58143101A JP 2587182 A JP2587182 A JP 2587182A JP 2587182 A JP2587182 A JP 2587182A JP S58143101 A JPS58143101 A JP S58143101A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- steam
- balance
- adjustment plate
- steam turbine
- 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
- 238000005553 drilling Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 10
- 238000012856 packing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 102220534634 Aryl hydrocarbon receptor nuclear translocator-like protein 1_R11I_mutation Human genes 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
- F01D5/085—Heating, heat-insulating or cooling means cooling fluid circulating inside the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は動翼に設けｔバランスホールの流過蒸気量を最
適値にｇｌＩ整して性能向上を図った。＠気タービン゛
に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention aims to improve performance by adjusting the amount of steam passing through a t-balance hole provided in a rotor blade to an optimum value. Regarding ＠Air Turbine.
蒸気タービンの各段落は＃Ｉ１図に示ｆように、ダイア
フラム１に固定しｔノズル２と、その下流＠に位置する
よう回転輪６に植設された動翼４とから構成されており
、主流蒸気−はノズル２がら動翼４の羽根５に向けて噴
出し、これに回転力を与える。As shown in Figure #I1, each stage of the steam turbine is composed of a nozzle 2 fixed to a diaphragm 1, and a rotor blade 4 installed in a rotating wheel 6 so as to be located downstream of the nozzle 2. The mainstream steam is ejected from the nozzle 2 toward the blades 5 of the rotor blade 4, giving rotational force thereto.
ダイヤフラム１には回転軸６との対同面に多数の歯を植
設しｔラビリンスパツキン６が配置され、漏洩蒸気町を
制限している。The diaphragm 1 is provided with a labyrinth packing 6 having a large number of teeth implanted on the same surface as the rotating shaft 6, and limits steam leakage.
このラビリンスパラ中ンから漏洩し友蒸気ｍ、はダイヤ
フラム１と動翼４の闇の通路７を通り、一部はｍ８とし
て羽根５へ流れ、残りはｍｊとして５ｌＬ４に穿設され
たバランスホール８を通ってｉＪＲ落へ流れる。The friend steam m, leaking from the labyrinth para center passes through the dark passage 7 between the diaphragm 1 and the moving blade 4, and part of it flows to the blade 5 as m8, and the rest flows as mj to the balance hole 8 bored in 5lL4. It flows through the iJR Ochi.
これらの漏洩分配蒸気町１ｍ、特に喝は生ｆｉ蒸気町に
混合する際、蒸気流れに干渉な及ぼし、蒸気タービンの
性能を低下させる大きな要因になっている。These leakage distribution steam lines, especially the leakage, interfere with the steam flow when mixed with the raw steam stream, and are a major factor in reducing the performance of the steam turbine.
バランスホール８の穿設径及び個ａｔ−適切に選定して
、その全面積′１ｋ１１１１１すれば漏洩分配蒸気−を
第１図の矢印方向とは逆に、即ちノズル２を通る主ｆｌ
ｔ蒸気−の一部を通路７へ流し込むこと力監可能となる
。If the drilling diameter and number of the balance holes 8 are appropriately selected and their total area is '1k11111, then the leakage and distribution steam can be directed in the opposite direction to the direction of the arrow in FIG.
It becomes possible to force a portion of the steam to flow into the passage 7.
その場合、ラビリンスノ（ツキン６と回転軸６の関１１
を通って流れる蒸気ｍ、と、ノズル２カ為ら通路７へ流
れ込む蒸気ｍつは合流し、ツクラン・スホール８を通っ
て次段落へ流れることになる。In that case, the labyrinth snow
The steam m flowing through the nozzle 2 and the steam m flowing into the passage 7 from the nozzle 2 are combined and flow through the opening hole 8 to the next stage.
しかしながら、蒸気タービンは、通常、第２図に示すよ
うに多数対のノズル及び羽根を近接配置して構成されて
おり、隣接段落の動翼間の°隙藺力監狭い究め、バラン
スホール８の孔明は加工はドリルで行なわざるを得す、
各段落における）（ランスホールの穿設径及び穿設個数
を任意に設定することができない。However, steam turbines are usually constructed with many pairs of nozzles and blades arranged close to each other as shown in Figure 2, and the clearance between the rotor blades in adjacent stages is narrow and the perforation of the balance hole 8 is narrow. Machining must be done with a drill,
(In each paragraph) (The diameter and number of lance holes cannot be arbitrarily set.
％段落のバランスホールの穿設径と個＠ ｆ）１等しい
場合には、段洛毎にノズル２と羽根５の圧力が異なって
いる究め、特定の段落では分配漏洩蒸気−による干渉を
防げても他の段落では分配漏洩蒸気ｍ、が主流蒸気ｍ、
に混合し、蒸気流れに干渉して蒸気タービンの性能を低
下させる。If the drilling diameter of the balance hole in the % paragraph is equal to the number f) 1, the pressure of the nozzle 2 and the blade 5 will be different for each stage, and interference due to distributed leakage steam can be prevented in a particular stage. In other paragraphs, distribution leakage steam m, mainstream steam m,
and interfere with steam flow, reducing steam turbine performance.
なお、主蒸気ｍ０として高温蒸気を用いる蒸気タービン
では、回転軸のディスクに植設された羽根の植込部が回
転による遠心力にエリ、高い応力を受け、かつ、高温の
主流蒸気にさらされるため、羽根及び回転軸は構成材料
の強度が低下し、非常に厳しい状態におかれることにな
る。In addition, in a steam turbine that uses high-temperature steam as the main steam m0, the implanted part of the blade installed in the disk of the rotating shaft is subjected to high stress due to centrifugal force due to rotation, and is also exposed to high-temperature mainstream steam. As a result, the strength of the constituent materials of the blades and rotating shaft decreases, and they are placed in very severe conditions.
そこで、羽根植込部における材料の強度低下を防止する
ために、比較的低温の冷却蒸気を導入することによって
、植込部を冷却することもある、この場合は、第３図に
示すように、先頭段落におけるダイアフラム１にパツキ
ンヘッド９を賊め込み、パツキンヘッド９に堆付は友ラ
ビリンスパツキン１０と回転軸６との関−に比較的低温
の冷却蒸気ｍ４を流入させ、この冷却蒸気−をダイアフ
ラム１に設けられ九ラビリンスパツキン６と回転軸６の
関ｌ！１１に通して通路７に導くようにしている。Therefore, in order to prevent the strength of the material in the blade implant from decreasing, the implant may be cooled by introducing relatively low-temperature cooling steam. In this case, as shown in Figure 3, , the packing head 9 is inserted into the diaphragm 1 in the first paragraph, and relatively low temperature cooling steam m4 is flowed into the relationship between the labyrinth packing 10 and the rotating shaft 6, and this cooling steam is deposited on the packing head 9. is provided on the diaphragm 1 between the nine labyrinth gaskets 6 and the rotating shaft 6! 11 and lead to the passage 7.
通路７に人つｔ冷却蒸気ｍ、の一部は通路７〃１ら直接
、主流蒸気−へ混合され、残りの冷却蒸気はバランスホ
ール８を通って、次Ｒ１１Ｉへ流出する。A part of the cooling steam m in the passage 7 is directly mixed into the mainstream steam from the passage 71, and the remaining cooling steam passes through the balance hole 8 and flows out to the next R11I.
このような冷却方式の蒸気タービンにおいても、各段落
のバランスホール８の穿設面積力監一定であると、段落
によっては、主流蒸気ｍ０が通路７へ流れ込み、冷却が
十分に行なわれない箇所が生ずるという問題が６つ九〇
〔発明の目的〕
本発明は従来の蒸気タービンにおける上述の如き不都合
を解消すべくなされｔもので、ノ（ランスホールの流過
蒸気量を任意の値に選定し得る蒸気タービンを提供する
ことを目的とするものである０〔発明の概要〕
本発明の蒸気タービンはノ（ランスホールに所定の寸法
の調整孔を有する調整板を調整板用溝等を利用して壜付
けることによって各段落の）（ランスホールの実効穿設
面積を自在に制限し得るよう構成されている。Even in a steam turbine with such a cooling method, if the drilling area force of the balance hole 8 in each stage is constant, there may be places where the mainstream steam m0 flows into the passage 7 and insufficient cooling occurs depending on the stage. [Objective of the Invention] The present invention has been made to solve the above-mentioned disadvantages in conventional steam turbines. 0 [Summary of the Invention] The steam turbine of the present invention has an adjustment plate having an adjustment hole of a predetermined size in a lance hole using an adjustment plate groove or the like. The structure is such that the effective drilling area of the lance hole (in each paragraph) can be freely limited by attaching the lance hole to the lance hole.
以下、第４図以降に示す実施例につき、詳細に説明する
。Hereinafter, the embodiments shown in FIG. 4 and subsequent figures will be described in detail.
第４図において、回転軸３に植設されたｍ翼４のディス
ク部分には回転軸の軸心から１川−円周上に、かつ円周
方向に等しい間隔會おいて４１数個のバランスホール４
が穿設されている０
これらのバランスホールは他の段落の制減（図示せず）
に設けられるノくランスホールと同一軸上線上にあり、
かつ、それらの直径は同径とされている。In Fig. 4, the disk portion of the m-wing 4 installed on the rotating shaft 3 has 41 or so balances placed one river from the axis of the rotating shaft on the circumference and at equal intervals in the circumferential direction. hall 4
are drilled 0 These balance holes are the limits of other paragraphs (not shown)
It is on the same axis as the noku lance hole provided in
Moreover, their diameters are the same.
動翼の前面Ｉｍ（第４図左側）には各ノ（ランスホール
８間を結ぶ円環状の調整板用溝１１力；設けられており
、各＃１１内には、所定の寸法の調整孔１２を有する扇
形の調整板１３が挿着されている。The front face Im (left side in Figure 4) of the rotor blade is provided with annular adjustment plate grooves 11 connecting lance holes 8, and adjustment holes with predetermined dimensions are provided in each #11. A fan-shaped adjusting plate 13 having a diameter of 12 is inserted.
調瘉板用＄１１の前面には、第５凶に工〈示されている
ように、調整板１６の離脱を防止する友めの環状フラン
ジ１４．１５が上下方向に突出している。On the front surface of the adjustment plate 11, a companion annular flange 14, 15 that prevents the adjustment plate 16 from coming off protrudes in the vertical direction, as shown in the fifth figure.
これらの環状７ランジは一部は切味されてＡ畷仮挿入孔
１６を形成している。A portion of these seven annular flanges is cut to form an A-furrow temporary insertion hole 16.
このｒＪｌＩｉ板挿入孔１６から溝１１内に挿入された
＃１４Ｉｉ板１２は４１１内を摺動してバランスホール
８の前面に移動ぜしめられ、調整孔１２がバランスホー
ル８と同心状となる位置で、その両［全コーキイングす
ることに１って固定される０との工うに、本発明におい
ては、バランスホール８の穿設径を予じめ谷段落で１１
１整するうちの一番大きい径で明けておき、！ｉｉＩ整
板１′５によって任意の大きさの調整孔１２ｔ−容易に
選定できるので、分配漏洩蒸気量町を任意にａｉｉ！節
でき、主蒸気−への混合を意図的に防止でき、あるいは
冷却蒸気量ｍ４の調節をする場合におりても調節板１６
の調整孔１２の内径を任意に選定することによって、各
段落への冷却蒸気量のａ１４ｇｋが可能となるーなお、
回転軸３に設けられた動翼４の遠心力による応力を軽減
するために第６図に示すようにｉ（ｉ・
萬４の一部を円環状に張り出させ、そこに調整板用ｓ１
１を設けて調整板１６を壜付けるようにしても工い。The #14Ii plate 12 inserted into the groove 11 from the rJlIi plate insertion hole 16 slides inside 411 and moves to the front of the balance hole 8, and is moved to a position where the adjustment hole 12 is concentric with the balance hole 8. However, in the present invention, the diameter of the balance hole 8 is set to 11 in the valley stage in advance.
Open with the largest diameter of the 1 adjustment, and! iii Adjustment hole 12t of arbitrary size can be easily selected by adjustment plate 1'5, so the distribution leakage steam amount can be arbitrarily selected. The adjustment plate 16 can be used to intentionally prevent mixing with the main steam, or to adjust the amount of cooling steam (m4).
By arbitrarily selecting the inner diameter of the adjustment hole 12, the amount of cooling steam supplied to each stage can be set to a14gk.
In order to reduce the stress due to the centrifugal force of the rotor blades 4 provided on the rotating shaft 3, as shown in Fig.
It is also possible to provide the adjusting plate 16 and attach the adjusting plate 16 thereto.
ｔｆｃ、ａｍ板１５および＃４１１は第７図オヨび第８
図に示すように動翼の後面（蒸気の出口側）に設けるよ
うにしてもよい、
〔発明の効果〕
上述の如く、本発明によれば、バランスホーへの実効穿
設径を任意に変えることができるので、漏洩蒸気による
主流蒸気の乱れがＷ４消し、蒸気タービンの性能が向上
する。TFC, AM board 15 and #411 are shown in Figure 7 and #8.
As shown in the figure, it may be provided on the rear surface of the rotor blade (on the steam outlet side). [Effects of the Invention] As described above, according to the present invention, the effective drilling diameter of the balance hoe can be changed arbitrarily. As a result, the turbulence of the mainstream steam caused by the leaked steam is eliminated, and the performance of the steam turbine is improved.
１食、冷却蒸気を導くバランスホールにあっては羽根の
植込部の冷却を十分に行わせることができ、蒸気タービ
ンの信頼性向上に寄与するところが大である。The balance hole that guides the cooling steam can sufficiently cool the implanted part of the blade, which greatly contributes to improving the reliability of the steam turbine.
第１図は従来の蒸気タービンにおける１段落分のダイヤ
フラムと動翼等を示′す縦断面図、第２図及び第３図は
従来の蒸気タービンにおける各段落の位置関係を示す説
明図、第４図は本発明における動翼の実施例を示す縦断
面図、第５図は第４図の斜視図、第６図、第７図及び第
８図は夫々本発明の変形例を示す縦断面図である。
１・・・ダイヤフラム、２・・・ノズル、３・・・回転
軸、４・・・動翼、５・・・羽根、６．１０・・・ラビ
リンスノ櫂ツキン、７・・・通路、８・・・バランスホ
ール、９・・・バッキングヘッド−１１１・・・調整板
用溝、１２・・・調整孔、１３・・・調整板、１４．１
５・・・環状７ランジ、１６・・・調整板挿入孔。
（７３１７） 代理人弁理士 則 近 憲 佑
３−
第１図
第Ｚ図
第３図
第４図
第５図FIG. 1 is a vertical cross-sectional view showing the diaphragm, rotor blades, etc. for one stage in a conventional steam turbine, and FIGS. 2 and 3 are explanatory diagrams showing the positional relationship of each stage in a conventional steam turbine. 4 is a longitudinal cross-sectional view showing an embodiment of the rotor blade according to the present invention, FIG. 5 is a perspective view of FIG. 4, and FIGS. 6, 7, and 8 are longitudinal cross-sectional views showing modified examples of the present invention It is a diagram. DESCRIPTION OF SYMBOLS 1... Diaphragm, 2... Nozzle, 3... Rotating shaft, 4... Moving blade, 5... Vane, 6.10... Labyrinth paddle, 7... Passage, 8 ...Balance hole, 9...Backing head-111...Adjustment plate groove, 12...Adjustment hole, 13...Adjustment plate, 14.1
5...Annular 7 langes, 16...Adjustment plate insertion hole. (7317) Representative Patent Attorney Noriyuki Chika 3- Figure 1 Figure Z Figure 3 Figure 4 Figure 5
Claims (1)
設面積が大きすぎる段落のバランスホールには、所望の
ｌｌｌ１ｌ！Ｉ孔を有する調整板ｔ−取付けて実効穿設
面積を制限するよう構成しｔことを特徴とする蒸気ター
ビン。 ２、動翼の前面または後面にバランスホール間を結ぶ円
環状の調整板用＃を設け、調整板挿入孔から前記調整板
用溝内に挿入した調整板を、その調整孔がバランスホー
ルに合致するように位置決め固定しｔことを特徴とする
特許請求の範囲ｙ４１項に記載の蒸気タービン。 ６、動翼の前面またＦｉ後面の一部を円環状に張り出さ
せ、そこに調整板用溝を設は几ことを特徴とする特許請
求の範囲＃！１項または纂２項に記載の蒸気タービン。[Claims] 1. Balance holes of the same diameter are provided for the mobilization of multiple paragraphs, and the balance holes of the paragraphs whose drilling area is too large are provided with the desired lll1l! 1. A steam turbine, characterized in that the adjustment plate has an I-hole and is configured to be mounted to limit the effective drilling area. 2. Provide an annular adjustment plate # on the front or rear surface of the rotor blade that connects the balance holes, and insert the adjustment plate into the adjustment plate groove from the adjustment plate insertion hole, so that the adjustment hole matches the balance hole. The steam turbine according to claim 41, characterized in that the steam turbine is positioned and fixed so as to. 6. Claim #, characterized in that a part of the front surface of the rotor blade or the rear surface of Fi is projected in an annular shape, and a groove for an adjustment plate is provided there. The steam turbine according to item 1 or item 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2587182A JPS58143101A (en) | 1982-02-22 | 1982-02-22 | Steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2587182A JPS58143101A (en) | 1982-02-22 | 1982-02-22 | Steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58143101A true JPS58143101A (en) | 1983-08-25 |
Family
ID=12177846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2587182A Pending JPS58143101A (en) | 1982-02-22 | 1982-02-22 | Steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58143101A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58142302U (en) * | 1982-03-19 | 1983-09-26 | 三菱重工業株式会社 | axial flow turbomachinery |
| JPS6077702U (en) * | 1983-11-02 | 1985-05-30 | 三菱重工業株式会社 | fluid rotating machinery |
| JP2009168019A (en) * | 2008-01-10 | 2009-07-30 | General Electric Co <Ge> | Device for plugging turbine wheel hole |
| RU2527804C2 (en) * | 2008-11-26 | 2014-09-10 | Дженерал Электрик Компани | Insert for adjustment of through-hole in steam turbine rotor wheel and method of its mounting |
| KR101663306B1 (en) * | 2015-10-02 | 2016-10-06 | 두산중공업 주식회사 | Gas Turbine disk |
| WO2024080158A1 (en) * | 2022-10-13 | 2024-04-18 | 三菱重工業株式会社 | Cryogenic power generation apparatus and cryogenic power generation system |
-
1982
- 1982-02-22 JP JP2587182A patent/JPS58143101A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58142302U (en) * | 1982-03-19 | 1983-09-26 | 三菱重工業株式会社 | axial flow turbomachinery |
| JPS6077702U (en) * | 1983-11-02 | 1985-05-30 | 三菱重工業株式会社 | fluid rotating machinery |
| JP2009168019A (en) * | 2008-01-10 | 2009-07-30 | General Electric Co <Ge> | Device for plugging turbine wheel hole |
| RU2527804C2 (en) * | 2008-11-26 | 2014-09-10 | Дженерал Электрик Компани | Insert for adjustment of through-hole in steam turbine rotor wheel and method of its mounting |
| KR101663306B1 (en) * | 2015-10-02 | 2016-10-06 | 두산중공업 주식회사 | Gas Turbine disk |
| WO2017057994A1 (en) * | 2015-10-02 | 2017-04-06 | 두산중공업 주식회사 | Gas turbine disc |
| WO2024080158A1 (en) * | 2022-10-13 | 2024-04-18 | 三菱重工業株式会社 | Cryogenic power generation apparatus and cryogenic power generation system |
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