JPH0337003B2 - - Google Patents
Info
- Publication number
- JPH0337003B2 JPH0337003B2 JP4897682A JP4897682A JPH0337003B2 JP H0337003 B2 JPH0337003 B2 JP H0337003B2 JP 4897682 A JP4897682 A JP 4897682A JP 4897682 A JP4897682 A JP 4897682A JP H0337003 B2 JPH0337003 B2 JP H0337003B2
- Authority
- JP
- Japan
- Prior art keywords
- steam
- turbine
- gas turbine
- steam turbine
- increase
- 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
- 239000007789 gas Substances 0.000 claims description 29
- 238000011084 recovery Methods 0.000 claims description 11
- 239000000567 combustion gas Substances 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000013021 overheating Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、ガスタービン、発電機および蒸気タ
ービンが一軸に連なるコンバインドサイクルプラ
ントの自立起動方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for independently starting a combined cycle plant in which a gas turbine, a generator, and a steam turbine are connected to one shaft.
第１図に従来のコンバインドサイクルプラント
の系統図を示す。ガスタービン４、蒸気タービン
６、発電機８は一軸に連なつている。従来採用さ
れている起動手順は以下の通りである。他プラン
ト又は補助ボイラ等の他系統からのシール用蒸気
供給ライン１８からの蒸気を蒸気タービン６のス
チームシール用に用いて、復水器７を真空上昇さ
せる。これは、回転上昇に伴なう蒸気タービン６
の排気段付近の長翼の過熱を防止するためであ
る。その後、起動モータ９を用いて、コンプレツ
サ１、ガスタービン本体３、蒸気タービン６およ
び発電機８を回転上昇させる。燃焼器２に燃料を
供給し点火すると、ガスタービン本体３は出力を
発生し、コンプレツサ１、蒸気タービン６、発電
機８を駆動する。またガスタービン排気１３は排
熱回収ボイラ５に導かれ、これを暖機させる。起
動モータ９はクラツチ（図示せず）にて切離され
る。排熱回収ボイラ５で発生した蒸気は、主蒸気
ライン１５を経て蒸気タービン６に供給され、出
力を発生する。ガスタービン４および蒸気タービ
ン６の出力は発電機８に伝えられ、電気出力に変
換される。
Figure 1 shows a system diagram of a conventional combined cycle plant. The gas turbine 4, steam turbine 6, and generator 8 are connected to one shaft. The startup procedure conventionally adopted is as follows. Steam from a sealing steam supply line 18 from another plant or another system such as an auxiliary boiler is used for steam sealing of the steam turbine 6 to raise the vacuum of the condenser 7. This is due to the increase in the rotation of the steam turbine 6.
This is to prevent the long blades near the exhaust stage from overheating. Thereafter, the starting motor 9 is used to increase the rotation of the compressor 1, the gas turbine main body 3, the steam turbine 6, and the generator 8. When fuel is supplied to the combustor 2 and ignited, the gas turbine main body 3 generates an output and drives the compressor 1, the steam turbine 6, and the generator 8. Further, the gas turbine exhaust 13 is guided to the exhaust heat recovery boiler 5 to warm it up. The starting motor 9 is disconnected by a clutch (not shown). Steam generated in the exhaust heat recovery boiler 5 is supplied to the steam turbine 6 via the main steam line 15 to generate output. The outputs of the gas turbine 4 and steam turbine 6 are transmitted to a generator 8 and converted into electrical output.
蒸気タービン６の排気段の過熱現象は主として
回転体と周囲流体との摩擦によるもので、ほぼ回
転数の３乗に比例する。これを第２図に示す。横
軸は定格回転数に対する割合、縦軸は排気段の温
度上昇値を示す。曲線Ａは蒸気タービンの内部の
圧力が大気圧のとき、曲線Ｂは大気圧以下の状態
での温度上昇値を示す。蒸気タービンの排気段の
温度上昇値は、主として長翼の強度から定められ
るので、従つて、大気圧状態での連続許容回転数
も、第２図から求められることになる。従つて従
来形のコンバインドサイクルプラントの起動方法
では、蒸気タービン６の排気段の過熱防止のた
め、復水器７を真空上昇させる必要があり、この
ため他系統からのシール用蒸気供給ライン１８に
よつて、他系統からの蒸気が必要であつた。
The overheating phenomenon in the exhaust stage of the steam turbine 6 is mainly due to friction between the rotating body and the surrounding fluid, and is approximately proportional to the cube of the rotation speed. This is shown in FIG. The horizontal axis shows the ratio to the rated rotation speed, and the vertical axis shows the temperature rise value of the exhaust stage. Curve A shows the temperature rise value when the pressure inside the steam turbine is atmospheric pressure, and curve B shows the temperature rise value when the pressure is below atmospheric pressure. Since the temperature rise value of the exhaust stage of a steam turbine is determined mainly from the strength of the long blades, the continuous permissible rotation speed at atmospheric pressure is also determined from FIG. Therefore, in the conventional method of starting up a combined cycle plant, it is necessary to raise the vacuum of the condenser 7 in order to prevent the exhaust stage of the steam turbine 6 from overheating. Therefore, steam from other systems was required.
本発明は、他系統からシール用蒸気を貰わず
に、安価で簡略に起動し運転状態に入れることの
できるコンバインドサイクルプラントの自立起動
方法を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for independently starting a combined cycle plant that can be started easily and inexpensively and put into operation without receiving sealing steam from other systems.
本発明においては、ガスタービン、発電機およ
び蒸気タービンが一軸に連なるコンバインドサイ
クルプラントにおいて、ガスタービンに付属する
起動モータにてプラントを起動し、内部が大気圧
下での温度上昇が許容される水準のガスタービン
側にて定められる低速度に保持し、次にガスター
ビン燃焼器に点火し、ガスタービン内で膨張を遂
げて、そこから排気される燃焼ガスで排熱回収ボ
イラを暖機して蒸気を発生させ、次にこの蒸気を
用いて蒸気タービンのスチームシールおよび回転
上昇、負荷上昇を行なうことにより、他系統から
シール用蒸気を貰わずに安価で簡略に自立起動を
させるものである。
In the present invention, in a combined cycle plant in which a gas turbine, a generator, and a steam turbine are connected in one shaft, the plant is started by a starting motor attached to the gas turbine, and the internal temperature is at a level that is allowed to rise under atmospheric pressure. The gas turbine combustor is held at a low speed determined by the gas turbine, and then the gas turbine combustor is ignited, the combustion gas expands within the gas turbine, and the exhaust heat recovery boiler is warmed up with the combustion gas exhausted from there. By generating steam and then using this steam to seal the steam turbine, increase its rotation, and increase its load, it can be started independently at low cost and without receiving sealing steam from other systems.
以下、本発明の一実施例について、第３図を参
照して説明する。尚第１図において説明しなかつ
た符号も第３図と同一符号を付して説明するか
ら、従来例の理解の参考にされたい。
Hereinafter, one embodiment of the present invention will be described with reference to FIG. Note that the symbols not explained in FIG. 1 will be explained using the same symbols as in FIG. 3, so please use this as a reference for understanding the conventional example.
第３図において、１はコンプレツサ、２は燃焼
器、３はガスタービン本体、４はガスタービン、
５は排熱回収ボイラ、６は蒸気タービン、７は復
水器、８は発電機、９は起動モータ、１０は給水
ポンプ、１１は大気吸気ライン、１２は燃料供給
ライン、１３はガスタービン排気ライン、１４は
排熱回収ボイラ排気ライン、１５は主蒸気ライ
ン、１６は蒸気タービン排気ライン、１７は給水
ラインである。この例ではガスタービン４、発電
機８、蒸気タービン６の順に一軸に連なつたもの
であるが、本発明ではこの順序は問わない。 In FIG. 3, 1 is a compressor, 2 is a combustor, 3 is a gas turbine main body, 4 is a gas turbine,
5 is an exhaust heat recovery boiler, 6 is a steam turbine, 7 is a condenser, 8 is a generator, 9 is a starting motor, 10 is a water supply pump, 11 is an atmospheric intake line, 12 is a fuel supply line, 13 is a gas turbine exhaust 14 is a heat recovery boiler exhaust line, 15 is a main steam line, 16 is a steam turbine exhaust line, and 17 is a water supply line. In this example, the gas turbine 4, the generator 8, and the steam turbine 6 are connected to one shaft in this order, but this order does not matter in the present invention.
起動順序は、まず、起動モータ９にて回転上昇
させ、蒸気タービン６側で制限される速度に保持
する。この速度の回転数一定の状態で燃焼器２に
点火し、ガスタービン本体３を駆動する。ガスタ
ービン排気１３により排熱回収ボイラ５が暖機す
るまで、この回転数を保持する。排熱回収ボイラ
５が蒸気を発生する様になつたら、その蒸気を用
いて蒸気タービン６のスチームシールを行ない、
復水器７を真空上昇し、回転数を上昇させてい
く。そして定格回転数迄上昇させ、負荷上昇を行
なう。 The starting order is as follows: First, the starting motor 9 rotates up, and the speed is maintained at a speed limited by the steam turbine 6 side. At this speed, the combustor 2 is ignited at a constant rotational speed, and the gas turbine main body 3 is driven. This rotational speed is maintained until the exhaust heat recovery boiler 5 is warmed up by the gas turbine exhaust 13. When the exhaust heat recovery boiler 5 begins to generate steam, the steam is used to steam seal the steam turbine 6,
The condenser 7 is raised to a vacuum and the rotational speed is increased. Then, increase the rotation speed to the rated speed and increase the load.
次に作用について説明する。 Next, the effect will be explained.
先づ、起動モータにて起動した時は、内部が大
気圧下での温度上昇が許容される水準の蒸気ター
ビン６側にて定められた低速度、即ち長翼の強度
から定められる安全な速度に保持するので、蒸気
タービン６の安全は保持されている。次にガスタ
ービン燃焼器２に点火し、ガスタービン内で膨張
を遂げて、そこから排気される燃焼ガスをガスタ
ービン排気ライン１３を通して排熱回収ボイラ５
を暖機して、蒸気を発生させるので、この蒸気で
蒸気タービン６のスチームシールをすることが出
来る。従つて復水器７を真空上昇させることがで
きるから、蒸気タービン６の回転数を上昇させ定
格回転数に上昇させ、一軸に連なつた発電機８に
負荷をとらせることができる。即ち、他系統から
シール用蒸気を貰わなくて済み、安価で簡略にコ
ンバインドサイクルプラントの自立起動ができ
る。 First, when started by the starting motor, the low speed is determined on the steam turbine 6 side at a level that allows the internal temperature to rise under atmospheric pressure, that is, the safe speed determined from the strength of the long blades. Therefore, the safety of the steam turbine 6 is maintained. Next, the gas turbine combustor 2 is ignited, expanded within the gas turbine, and the combustion gas exhausted from there is passed through the gas turbine exhaust line 13 to the exhaust heat recovery boiler 5.
Since the steam turbine 6 is warmed up and steam is generated, the steam turbine 6 can be steam-sealed with this steam. Therefore, since the condenser 7 can be raised to a vacuum, the rotational speed of the steam turbine 6 can be increased to the rated rotational speed, and the generator 8 connected to one shaft can take the load. That is, there is no need to obtain sealing steam from other systems, and the combined cycle plant can be started independently at low cost.
尚、本発明は上記し、かつ図面に示した実施例
のみに限定されるものではなく、その要旨を変更
しない範囲で、種々変形して実施できることは勿
論である。 It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can of course be implemented with various modifications without changing the gist thereof.
以上説明したように、本発明によれば、起動途
中の低速時にガスタービン燃焼器にに点火し、ガ
スタービン内で膨張を遂げて、そこから排気され
る燃焼ガスで排熱回収ボイラを暖機して蒸気を発
生させ、次にこの蒸気を用いて蒸気タービンのス
チームシールおよび回転上昇、負荷上昇を行うの
で、他系統からシール用蒸気を貰わずに、安価で
簡略なコンバインドサイクルプラントの自立起動
方法が提供できる。
As explained above, according to the present invention, the gas turbine combustor is ignited at low speed during startup, expands within the gas turbine, and warms up the exhaust heat recovery boiler with the combustion gas exhausted from there. This steam is then used to seal the steam turbine, increase its rotation, and increase its load. This allows for inexpensive and simple independent startup of a combined cycle plant without receiving sealing steam from other systems. method can be provided.
第１図は従来の起動方法を行なうコンバインド
サイクルプラントを示す系統図、第２図は蒸気タ
ービンの回転数と排気段の温度上昇の関係を示す
曲線図、第３図は本発明の自立起動方法の一実施
例を行なうコンバインドサイクルプラントを示す
系統図である。
１……コンプレツサ、２……燃焼器、３……ガ
スタービン本体、４……ガスタービン、５……排
熱回収ボイラ、６……蒸気タービン、８……発電
機、９……起動モータ。
Figure 1 is a system diagram showing a combined cycle plant using the conventional startup method, Figure 2 is a curve diagram showing the relationship between the rotational speed of the steam turbine and the temperature rise of the exhaust stage, and Figure 3 is the independent startup method of the present invention. 1 is a system diagram showing a combined cycle plant implementing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Compressor, 2... Combustor, 3... Gas turbine main body, 4... Gas turbine, 5... Exhaust heat recovery boiler, 6... Steam turbine, 8... Generator, 9... Starting motor.
Claims (1)
一軸に連なるコンバインドサイクルプラントにお
いて、ガスタービンに付属する起動モータにてプ
ラントを起動し、内部が大気圧下での温度上昇が
許容される水準の蒸気タービン側にて定められる
低速度に保持に、次にガスタービン燃焼器に点火
し、ガスタービン内で膨張を遂げて、そこから排
気される燃焼ガスで排熱回収ボイラを暖機して蒸
気を発生させ、次にこの蒸気を用いて蒸気タービ
ンのスチームシールおよび回転上昇、負荷上昇を
行なうことを特徴とするコンバインドサイクルプ
ラントの自立起動方法。1. In a combined cycle plant in which a gas turbine, a generator, and a steam turbine are connected to one shaft, the plant is started by the starting motor attached to the gas turbine, and the steam turbine side is heated to a level that allows the internal temperature to rise under atmospheric pressure. The gas turbine combustor is then ignited, expanding within the gas turbine, and the combustion gas exhausted from it warms up the waste heat recovery boiler to generate steam. , and then using this steam to seal the steam turbine, increase the rotation of the steam turbine, and increase the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4897682A JPS58167812A (en) | 1982-03-29 | 1982-03-29 | Self starting method of combined cycle plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4897682A JPS58167812A (en) | 1982-03-29 | 1982-03-29 | Self starting method of combined cycle plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58167812A JPS58167812A (en) | 1983-10-04 |
| JPH0337003B2 true JPH0337003B2 (en) | 1991-06-04 |
Family
ID=12818285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4897682A Granted JPS58167812A (en) | 1982-03-29 | 1982-03-29 | Self starting method of combined cycle plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58167812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022009361A1 (en) | 2020-07-09 | 2022-01-13 | サンコール株式会社 | Bus bar assembly and method for manufacturing same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10156160B2 (en) * | 2016-10-24 | 2018-12-18 | General Electric Technology Gmbh | Systems and methods to control power plant operation via control of turbine run-up and acceleration |
| CN111120020B (en) * | 2019-12-26 | 2022-01-25 | 广东电网有限责任公司电力科学研究院 | Transformation method, device, equipment and storage medium of ultra-supercritical unit |
-
1982
- 1982-03-29 JP JP4897682A patent/JPS58167812A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022009361A1 (en) | 2020-07-09 | 2022-01-13 | サンコール株式会社 | Bus bar assembly and method for manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58167812A (en) | 1983-10-04 |
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