JPS6238525B2 - - Google Patents
Info
- Publication number
- JPS6238525B2 JPS6238525B2 JP56172107A JP17210781A JPS6238525B2 JP S6238525 B2 JPS6238525 B2 JP S6238525B2 JP 56172107 A JP56172107 A JP 56172107A JP 17210781 A JP17210781 A JP 17210781A JP S6238525 B2 JPS6238525 B2 JP S6238525B2
- Authority
- JP
- Japan
- Prior art keywords
- gas turbine
- generator
- steam turbine
- turbine
- steam
- 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.)
- Expired
Links
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification 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
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/12—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engines being mechanically coupled
- F01K23/16—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engines being mechanically coupled all the engines being turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Description
【発明の詳細な説明】
本発明は、同軸コンバインドプラント殊にその
主機回転体である発電機、ガスタービン及び蒸気
タービンの配列方式に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coaxial combined plant, particularly to an arrangement system for a generator, a gas turbine, and a steam turbine, which are the main rotating bodies of the coaxial combined plant.
第１図は従来の主機回転体配列方式を示し、発
電機１を中央に設置し、その両側にガスタービン
２及び蒸気タービン３を設置していわゆるＣ（ガ
スタービン）−Ｇ（発電機）−Ｓ（蒸気タービン）
配列としている。 Fig. 1 shows a conventional main engine rotating body arrangement system, in which a generator 1 is installed in the center, and a gas turbine 2 and a steam turbine 3 are installed on both sides of it, so-called C (gas turbine)-G (generator)- S (steam turbine)
It is an array.
このような従来のＣ−Ｇ−Ｓ配列方式は、しか
し、次のような欠点がある。 However, the conventional C-G-S arrangement method has the following drawbacks.
(1) 発電機の保守点検時（特にロータ引抜時）、
蒸気タービン又はガスタービンを分解する必要
がある。さらに、場合によつては、発電機ステ
ータのジヤツキアツプも必要となるため、開放
点検に要する期間がその分だけ長くなる。(1) During maintenance and inspection of the generator (especially when removing the rotor),
It is necessary to disassemble the steam or gas turbine. Furthermore, in some cases, it may be necessary to jack up the generator stator, which lengthens the period required for overhaul inspection.
(2) 発電機が蒸気タービンとガスタービンとの中
間に位置するため、発電機ステータリード線の
引出スペースが横に張出し、その分だけ据付面
積を広く必要とする（この点従来の蒸気タービ
ン又はガスタービン単独プラントでは、発電機
基礎下空間を利用しそのまま軸方向に引出すこ
とができた）。(2) Since the generator is located between the steam turbine and the gas turbine, the extraction space for the generator stator lead wires extends laterally, requiring a larger installation area (in this respect, compared to conventional steam turbines or In plants with a single gas turbine, it was possible to use the space under the generator foundation and pull it out in the axial direction).
(3) 蒸気タービン及びガスタービンのそれぞれに
スラスト軸受４の設置が必要であり、従つて相
互のロータの軸位置の移動および熱伸び差を吸
収するため上記スラスト軸受４の中間にフレキ
シブルカツプリング５を設置する必要がある。
しかして、このフレキシブルカツプリングは、
リジツトカツプリングに比して軸系振動特性上
好ましくなく、軸系の信頼性向上に対して不安
要素となつている。(3) It is necessary to install a thrust bearing 4 in each of the steam turbine and the gas turbine, and therefore, a flexible coupling 5 is installed between the thrust bearings 4 to absorb the movement of the shaft positions of the rotors and the difference in thermal expansion. need to be installed.
However, this flexible coupling ring is
Compared to rigid couplings, it is unfavorable in terms of vibration characteristics of the shaft system, and is a source of concern for improving the reliability of the shaft system.
なお、第１図において、６はガスタービン２の
タービン部、７はその圧縮機部、８は起動装置、
９はリジツトカツプリング、１０はスリツプリン
グであり、このスリツプリングは発電機励磁電流
を外部電源より供給するためのものである。 In FIG. 1, 6 is a turbine section of the gas turbine 2, 7 is a compressor section thereof, 8 is a starting device,
9 is a rigid coupling, and 10 is a slip ring, which is used to supply the generator excitation current from an external power source.
本発明は、以上述べた従来の欠点を解消するた
めになされたもので、同軸コンバインドプラント
における従来のＣ−Ｇ−Ｓ配列方式を改良したも
のである。 The present invention has been made to eliminate the above-mentioned conventional drawbacks, and is an improvement on the conventional C-G-S arrangement system in coaxial combined plants.
本発明は、同軸コンバインドプラントの主機回
転体の配列をガスタービン、蒸気タービン及び発
電機の順又は蒸気タービン、ガスタービン及び発
電機の順とし、ガスタービンと蒸気タービンとの
間の軸系にスラスト軸受を設置するとともに、各
回転体の結合をすべてリジツトカツプリングとし
たことを特徴とする。 The present invention arranges the main rotating bodies of a coaxial combined plant in the order of gas turbine, steam turbine, and generator, or in the order of steam turbine, gas turbine, and generator, and thrust thrust in the shaft system between the gas turbine and the steam turbine. It is characterized by the installation of bearings and the use of rigid couplings for all connections between the rotating bodies.
以下図面を参照して本発明の実施例について詳
述する。 Embodiments of the present invention will be described in detail below with reference to the drawings.
第２図において、１は発電機、２はガスタービ
ン、３は蒸気タービン、４はスラスト軸受、６は
ガスタービンのタービン部、７はその圧縮機部、
８は起動装置、９はリジツトカツプリング、１０
はスリツプリングであり、同軸コンバンドプラン
トの主機回転体の配列はガスタービン２、蒸気タ
ービン３及び発電機１の順いわゆるＣ−Ｓ−Ｇ配
列方式となつている。また、この変形として、ガ
スタービン２と蒸気タービン３とを交替し、Ｓ−
Ｃ−Ｇ配列方式とすることもできる。 In FIG. 2, 1 is a generator, 2 is a gas turbine, 3 is a steam turbine, 4 is a thrust bearing, 6 is a turbine section of the gas turbine, 7 is a compressor section thereof,
8 is a starting device, 9 is a rigid coupling, 10
is a slip ring, and the main rotating bodies of the coaxial combined plant are arranged in the order of a gas turbine 2, a steam turbine 3, and a generator 1, which is a so-called C-S-G arrangement. In addition, as a modification of this, the gas turbine 2 and the steam turbine 3 are replaced, and the S-
A C-G arrangement method may also be used.
このようなＣ−Ｓ−Ｇ又はＳ−Ｃ−Ｇ配列方式
を採ることにより、発電機１は軸系の端に位置す
ることになるので、その電気系と蒸気系とを配置
上分離でき、また１個のスラスト軸受４をガスタ
ービン２と蒸気タービン３との間の軸系に設置す
るだけで各回転体の結合はすべてリジツトカツプ
リング９によりおこなうことができる。 By adopting such a C-S-G or S-C-G arrangement system, the generator 1 is located at the end of the shaft system, so the electrical system and the steam system can be separated in terms of layout. Further, by simply installing one thrust bearing 4 in the shaft system between the gas turbine 2 and the steam turbine 3, all the rotating bodies can be connected by rigid couplings 9.
すなわち、同軸コンバインドプラントにおい
て、全軸系のスラスト力としてガスタービン２及
び蒸気タービン３のスラスト力があるが、Ｃ−Ｓ
−Ｇ又はＳ−Ｃ−Ｇ配列にしてこれらガスタービ
ンスラスト力の作用方向と蒸気タービンスラスト
力の作用方向とを相互にキヤンセルさせてこれら
両スラスト力をバランスさせるようにすれば、ス
ラスト軸受４をガスタービン２と蒸気タービン３
との間の軸系にのみ設置し、このスラスト軸受に
より残りのスラスト力（これら両スラスト力を完
全に相殺することはできないことから残りのスラ
スト力が生じる）を受けるようにし、この残りの
スラスト力は十分に小さくすることができるので
スラスト軸受を共用することができるものであ
る。これにより、ガスタービン及び蒸気タービン
のそれぞれにスラスト軸受を設置する必要はなく
なり、したがつてフレキシブルカツプリングを設
ける必要性もなく、各回転体の結合をすべてリジ
ツトカツプリングによることができることにな
る。 That is, in a coaxial combined plant, the thrust force of the gas turbine 2 and the steam turbine 3 is the thrust force of the entire shaft system, but the C-S
-G or S-C-G arrangement so that the direction of action of the gas turbine thrust force and the direction of action of the steam turbine thrust force are mutually canceled and the two thrust forces are balanced, the thrust bearing 4 can be Gas turbine 2 and steam turbine 3
This thrust bearing is installed only in the shaft system between the Since the force can be made sufficiently small, the thrust bearing can be shared. This eliminates the need to install thrust bearings in each of the gas turbine and steam turbine, and therefore eliminates the need to provide flexible couplings, making it possible to connect all rotating bodies using rigid couplings. .
しかして、第２図においては、スラスト軸受４
は前述した如くガスタービン２と蒸気タービン３
との間の軸系（第２軸受１１と第３軸受１２との
中間）に設置されているとともに、各回転体１，
２，３の結合はすべてリジツトカツプリング９に
より行なわれているので、結合後は各ロータはこ
のスラスト軸受４を起点として運転中左、右に熱
伸びする。 Therefore, in FIG. 2, the thrust bearing 4
As mentioned above, the gas turbine 2 and the steam turbine 3
(intermediate between the second bearing 11 and the third bearing 12), and each rotating body 1,
2 and 3 are all connected by rigid couplings 9, so after they are connected, each rotor thermally expands from the thrust bearing 4 to the left and right during operation.
すなわち、ガスタービン２の車室は、スラスト
軸受４の近傍にて基礎に固定されているため、こ
の点を起点として左側に熱伸びするのでガスター
ビンの車室及びロータ間の熱伸びは問題なく吸収
できる。一方、蒸気タービン２の車室も、このス
ラスト軸受近傍にて基礎に固定されているため、
この点を起点として右側に熱伸びするので蒸気タ
ービンの車室及びロータの熱伸びが同一方向とな
り、熱伸差は容易に吸収可能となる。 In other words, since the casing of the gas turbine 2 is fixed to the foundation near the thrust bearing 4, thermal expansion occurs to the left from this point, so there is no problem with thermal expansion between the gas turbine casing and the rotor. It can be absorbed. On the other hand, since the casing of the steam turbine 2 is also fixed to the foundation near this thrust bearing,
Since the thermal expansion starts from this point to the right, the thermal expansion of the casing of the steam turbine and the rotor are in the same direction, and the difference in thermal expansion can be easily absorbed.
なお、スラスト軸受４をガスタービン２と蒸気
タービン３との間の軸系に設置する代りに蒸気タ
ービン３と発電機１との間の軸系に設置すると、
ガスタービン内にてロータの熱伸び量が大きくな
るので（ロータの熱伸びに蒸気タービン部の熱伸
びが加算されるため）、車室と接触する可能性が
あり、また接触しないように車室とロータとのク
リアランスを大きくとると性能低下が大きくなる
問題があり、したがつてこの方式は採用できない
ものである。 Note that if the thrust bearing 4 is installed in the shaft system between the steam turbine 3 and the generator 1 instead of installing it in the shaft system between the gas turbine 2 and the steam turbine 3,
Since the amount of thermal expansion of the rotor in the gas turbine increases (because the thermal expansion of the steam turbine section is added to the thermal expansion of the rotor), there is a possibility that it will come into contact with the casing, and the casing must be If the clearance between the rotor and the rotor is large, there is a problem in that the performance deteriorates significantly, and therefore this method cannot be adopted.
以上述べたように、本発明によれば、同軸コン
バインドの主機回転体の配列をガスタービン、蒸
気タービン及び発電機の順（Ｃ−Ｓ−Ｇ配列）又
は蒸気タービン、ガスタービン及び発電機の順
（Ｓ−Ｃ−Ｇ配列）にすることにより、発電機の
保守点検（特にロータの引抜）は他の主機回転体
を分解することなく行なうことができるので従来
よりも容易となり、またその電気系と蒸気系を配
置上分離できるので同軸コンバインドプラントの
全体配置に必要なスペースを小さくできるととも
にその配置（特に発電機のステータリード線の引
出し）が容易となる。しかも、このようなＣ−Ｓ
−Ｇ又はＳ−Ｃ−Ｇ配列を採ることにより、全軸
系に一個のスラスト軸受を設置するだけですなわ
ちスラスト軸受をガスタービンと蒸気タービンと
の間の軸系にのみ設置するだけで、各回転体の結
合をすべてリジツトカツプリングにより行なうこ
とができ、したがつて従来の如きフレキシブルカ
ツプリングを使用する必要性がないので軸系の振
動に関して信頼性の向上化を計ることができる。 As described above, according to the present invention, the main rotating bodies of a coaxial combined are arranged in the order of gas turbine, steam turbine, and generator (C-S-G arrangement) or in the order of steam turbine, gas turbine, and generator. (S-C-G arrangement) allows maintenance and inspection of the generator (particularly removing the rotor) to be performed without disassembling the other main rotating bodies, making it easier than before. Since the system and the steam system can be separated in terms of layout, the space required for the overall layout of the coaxial combined plant can be reduced, and the layout (especially drawing out the stator lead wires of the generator) becomes easier. Moreover, such C-S
By adopting the -G or S-C-G arrangement, it is possible to install only one thrust bearing in the entire shaft system, that is, to install the thrust bearing only in the shaft system between the gas turbine and the steam turbine, and each Since all of the rotating bodies can be connected by rigid couplings, there is no need to use conventional flexible couplings, and reliability can be improved with respect to vibrations of the shaft system.
第１図は従来の同軸コンバインドプラントにお
ける主機回転体の配列方式を示す図、第２図は本
発明による同軸コンバインドプラントにおける主
機回転体の配列方式の一例を示す図である。
１……発電機、２……ガスタービン、３……蒸
気タービン、４……スラスト軸受、９……リジツ
トカツプリング。
FIG. 1 is a diagram showing an arrangement method of main engine rotating bodies in a conventional coaxial combined plant, and FIG. 2 is a diagram showing an example of an arrangement method of main engine rotating bodies in a coaxial combined plant according to the present invention. 1... Generator, 2... Gas turbine, 3... Steam turbine, 4... Thrust bearing, 9... Rigid coupling.
Claims (1)
ビン及び発電機の順又は蒸気タービン、ガスター
ビン及び発電機の順とし、ガスタービンと蒸気タ
ービンとの間の軸系にスラスト軸受を設置すると
ともに、各回転体の結合をすべてリジツトカツプ
リングとしたことを特徴とする同軸コンバインド
プラント。1 The main engine rotating bodies are arranged in the order of gas turbine, steam turbine, and generator, or steam turbine, gas turbine, and generator, and a thrust bearing is installed in the shaft system between the gas turbine and the steam turbine, and each A coaxial combined plant characterized by using rigid couplings for all connections between rotating bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17210781A JPS5874809A (en) | 1981-10-29 | 1981-10-29 | Coaxial combined plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17210781A JPS5874809A (en) | 1981-10-29 | 1981-10-29 | Coaxial combined plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5874809A JPS5874809A (en) | 1983-05-06 |
| JPS6238525B2 true JPS6238525B2 (en) | 1987-08-18 |
Family
ID=15935673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17210781A Granted JPS5874809A (en) | 1981-10-29 | 1981-10-29 | Coaxial combined plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5874809A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6413438U (en) * | 1987-07-10 | 1989-01-24 | ||
| JP2004332722A (en) * | 2003-05-10 | 2004-11-25 | Atlas Copco Energas Gmbh | Turbo-machine |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5199256A (en) * | 1989-01-26 | 1993-04-06 | General Electric Company | Overspeed protection for a gas turbine/steam turbine combined cycle |
| US5042247A (en) * | 1989-01-26 | 1991-08-27 | General Electric Company | Overspeed protection method for a gas turbine/steam turbine combined cycle |
| US5099643A (en) * | 1989-01-26 | 1992-03-31 | General Electric Company | Overspeed protection for a gas turbine/steam turbine combined cycle |
| US5069030A (en) * | 1989-01-26 | 1991-12-03 | General Electric Company | Overspeed protection for a gas turbine/steam turbine combined cycle |
| US5042246A (en) * | 1989-11-06 | 1991-08-27 | General Electric Company | Control system for single shaft combined cycle gas and steam turbine unit |
| US5301499A (en) * | 1990-06-28 | 1994-04-12 | General Electric Company | Overspeed anticipation and control system for single shaft combined cycle gas and steam turbine unit |
| FR2719627B1 (en) * | 1994-05-03 | 1996-06-14 | Gec Alsthom Electromec | Combined cycle electrical energy production unit comprising a gas turbine and a multi-module steam turbine. |
-
1981
- 1981-10-29 JP JP17210781A patent/JPS5874809A/en active Granted
Non-Patent Citations (1)
| Title |
|---|
| AN ASME PUBLICTION=1963 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6413438U (en) * | 1987-07-10 | 1989-01-24 | ||
| JP2004332722A (en) * | 2003-05-10 | 2004-11-25 | Atlas Copco Energas Gmbh | Turbo-machine |
| JP4557584B2 (en) * | 2003-05-10 | 2010-10-06 | アトラス・コプコ・エネルガス・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング | Turbo machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5874809A (en) | 1983-05-06 |
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