JPH0642735A - Gas turbine combined facility - Google Patents

Gas turbine combined facility

Info

Publication number
JPH0642735A
JPH0642735A JP19832492A JP19832492A JPH0642735A JP H0642735 A JPH0642735 A JP H0642735A JP 19832492 A JP19832492 A JP 19832492A JP 19832492 A JP19832492 A JP 19832492A JP H0642735 A JPH0642735 A JP H0642735A
Authority
JP
Japan
Prior art keywords
gas turbine
dampers
exhaust
seal plate
duct
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.)
Withdrawn
Application number
JP19832492A
Other languages
Japanese (ja)
Inventor
Tsuneo Kobayashi
恒夫 小林
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP19832492A priority Critical patent/JPH0642735A/en
Publication of JPH0642735A publication Critical patent/JPH0642735A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE:To prevent any erroneous operation of a gas turbine and assure safety of operation in the gas turbine by a method wherein a plurality of dampers are arranged side by side within a bypass chimney of a discharging duct and a seal plate can be arranged side by side between these dampers in such a manner that it can be opened or closed. CONSTITUTION:Dampers 1 and 2 are arranged side by side within a bypass chimney 8. A seal plate 3 is arranged side by side between the dampers 1 and 2 in such a manner that the seal plate 3 can be rotated. Adjustment of discharging gas pressure can be attained only with the seal plate 3 within the duct and no safety device against erroneous operation of the dampers 1 and 2 is particularly installed. With such an arrangement, since the discharging pressure within the discharging duct can be decreased during a single operation of the gas turbine, efficiency of the gas turbine is improved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、排ガスボイラなどとの
ガスタービンコンバインド設備に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas turbine combined facility with an exhaust gas boiler or the like.

【0002】[0002]

【従来の技術】図2は排ガスボイラとの従来のガスター
ビンコンバインド設備の説明図である。図において、本
ガスタービンコンバインド設備に併設されているガスタ
ービン6と排ガスボイラ5とをコンバインド運転させた
り、それぞれを単独運転させたりする場合、運転を継続
しながらガスタービン6の排気ダクト内における排気圧
力を調整して運転モードを切替える必要がある。例え
ば、排ガスボイラ5の入口ダンパ4を全閉して排ガスボ
イラ5及びガスタービン6を単独に運転している状態か
らコンバインド運転に移行する場合には、入口ダンパ4
前後の圧力を同一にして入口ダンパ4を開けなければな
らない。このため、バイパス煙突8入口に多孔板7を設
置してダクト内における排気圧力を常時上昇させてい
る。また、バイパス煙突8内に設置されているバイパス
ダンパ9を操作してダクト内における排気圧力を上昇さ
せている。図における符号11は助燃バーナである。
2. Description of the Related Art FIG. 2 is an explanatory view of a conventional gas turbine combined facility with an exhaust gas boiler. In the figure, when the gas turbine 6 and the exhaust gas boiler 5 that are attached to the present gas turbine combined facility are operated in a combined operation or each is operated independently, the exhaust gas in the exhaust duct of the gas turbine 6 is continued while the operation is continued. It is necessary to adjust the pressure and switch the operation mode. For example, when the inlet damper 4 of the exhaust gas boiler 5 is fully closed and the exhaust gas boiler 5 and the gas turbine 6 are operated independently, the inlet damper 4
The front and rear pressures must be the same, and the inlet damper 4 must be opened. For this reason, the perforated plate 7 is installed at the entrance of the bypass chimney 8 to constantly increase the exhaust pressure in the duct. Further, the bypass damper 9 installed in the bypass chimney 8 is operated to increase the exhaust pressure in the duct. Reference numeral 11 in the figure is an auxiliary burner.

【0003】[0003]

【発明が解決しようとする課題】上記のように、排ガス
ボイラとの従来のガスタービンコンバインド設備におい
ては、排ガスボイラ5の入口ダンパ4前後の圧力を同一
にするためにバイパス煙突8入口に多孔板7を設置して
排気ダクト内における排気圧力を常時上昇させている
が、これによってガスタービン6の単独運転時も排気圧
力が上昇してガスタービン6の効率を低下させている。
また、バイパス煙突8内に設置されているバイパスダン
パ9を操作して排気ダクト内における排気圧力を上昇さ
せているが、これによってガスタービン6の運転中に排
気圧力が上昇し過ぎるとガスタービン6にダメージを与
えるため、また誤操作の防止、安全性の確保のため、排
気ダクトに安全扉10等の安全装置が必要となってい
る。
As described above, in the conventional gas turbine combined equipment with the exhaust gas boiler, in order to make the pressures around the inlet damper 4 of the exhaust gas boiler 5 the same, the perforated plate at the inlet of the bypass chimney 8 is used. Although the exhaust pressure in the exhaust duct is constantly increased by installing No. 7, the exhaust pressure is increased and the efficiency of the gas turbine 6 is reduced even when the gas turbine 6 is operated alone.
Further, the bypass damper 9 installed in the bypass chimney 8 is operated to increase the exhaust pressure in the exhaust duct. However, if the exhaust pressure rises excessively during the operation of the gas turbine 6 due to this, the gas turbine 6 A safety device such as a safety door 10 is required in the exhaust duct in order to damage the vehicle, prevent erroneous operation, and ensure safety.

【0004】[0004]

【課題を解決するための手段】本発明に係るガスタービ
ンコンバインド設備は上記課題の解決を目的にしてお
り、ガスタービンの排気ダクトにおけるバイパス煙突内
に並列に設けられた複数のダンパと、該複数のダンパの
間に上記ダンパと並列に開閉可能に設けられたシールプ
レートとを備えた構成を特徴とする。
SUMMARY OF THE INVENTION A gas turbine combined installation according to the present invention is intended to solve the above problems, and includes a plurality of dampers provided in parallel in a bypass chimney in an exhaust duct of a gas turbine, and a plurality of the dampers. And a seal plate provided in parallel with the damper so as to be openable and closable between the dampers.

【0005】[0005]

【作用】即ち、本発明に係るガスタービンコンバインド
設備においては、ガスタービンの排気ガクトにおけるバ
イパス煙突内に複数のダンパが並列に設けられるととも
にこれら複数のダンパの間にシールプレートがダンパと
並列に開閉可能に設けられており、ガスタービンの単独
運転時にはバイパス煙突内のダンパ、シールプレートを
操作することにより排気ダクト内における排気圧力を下
降させることができる。また、運転モードの切替え時に
排気ダクト内における排気圧力を上昇させる場合はシー
ルプレートを閉じてバイパス煙突内における排気の流れ
を阻害して排気圧力を上昇させることができるが、この
シールプレートを閉じてもバイパス煙突内全部は塞がら
ず排気ダクト内における排気圧力が上がり過ぎることが
ない。また、バイパス煙突内を全閉にする場合はシール
プレート3を閉じたままで複数のダンパも全閉とする。
That is, in the gas turbine combined equipment according to the present invention, a plurality of dampers are provided in parallel in the bypass chimney in the exhaust gact of the gas turbine, and a seal plate is opened and closed in parallel with the damper between the plurality of dampers. The exhaust pressure in the exhaust duct can be lowered by operating the damper and the seal plate in the bypass chimney when the gas turbine is operating independently. In addition, when increasing the exhaust pressure in the exhaust duct when switching the operating mode, the seal plate can be closed to block the flow of exhaust gas in the bypass chimney and increase the exhaust pressure. However, the entire inside of the bypass chimney is not blocked and the exhaust pressure in the exhaust duct does not rise too much. Further, when the inside of the bypass chimney is fully closed, the plurality of dampers are also fully closed while the seal plate 3 is closed.

【0006】[0006]

【実施例】図1は本発明の一実施例に係るガスタービン
コンバインド設備の説明図である。図において、本ガス
タービンコンバインド設備は排ガスボイラ5とのガスタ
ービンコンバインド設備で、併設されているガスタービ
ン6と排ガスボイラ5とをコンバインド運転させたり、
それぞれを単独運転させたりする場合、運転を継続しな
がらガスタービン6の排気ダクト内における排気圧力を
調整して運転モードを切替える必要がある。例えば、排
ガスボイラ5の入口ダンパ4を全閉して排ガスボイラ5
及びガスタービン6を単独に運転している状態からコン
バインド運転に移行する場合には、入口ダンパ4前後の
圧力を同一にして入口ダンパ4を開けなければならな
い。図における符号11は助燃バーナである。
FIG. 1 is an explanatory view of a gas turbine combined facility according to an embodiment of the present invention. In the figure, the gas turbine combined equipment is a gas turbine combined equipment with the exhaust gas boiler 5, and the combined operation of the gas turbine 6 and the exhaust gas boiler 5 which are installed side by side,
When operating each independently, it is necessary to switch the operation mode by adjusting the exhaust pressure in the exhaust duct of the gas turbine 6 while continuing the operation. For example, by completely closing the inlet damper 4 of the exhaust gas boiler 5, the exhaust gas boiler 5
In addition, when the gas turbine 6 is operated independently and the mode is changed to the combined operation, the pressure before and after the inlet damper 4 must be made the same to open the inlet damper 4. Reference numeral 11 in the figure is an auxiliary burner.

【0007】このため、本ガスタービンコンバインド設
備においては図に示すようにバイパス煙突8内にダンパ
1,2が横に並んで並列に設置されるとともに、このダ
ンパ1,2間にシールプレート3が回転可能にダンパ
1,2と並列に設置されている。ダンパ1,2とシール
プレート3とは機械的には分離されていて、シールプレ
ート3のみでもダクト内における排気圧力の調整が可能
となっており、ダンパ1,2の誤操作等に対する安全扉
などの安全装置は特に設置されていない。シールプレー
ト3は全開時にはバイパス煙突8内における排気の流れ
に平行になるように設置されており、従来のガスタービ
ンコンバインド設備における多孔板のように常時500
℃前後の排気を全面に受けることがないので、高温の排
気に対する耐熱構造が簡単になっている。また、ダンパ
1,2も全開時には排気の流れに障害とならない位置に
あってシールプレート3と同じように流れに平行になる
ように設定されている。
Therefore, in the present gas turbine combined equipment, as shown in the figure, the dampers 1 and 2 are installed side by side in parallel in the bypass chimney 8, and the seal plate 3 is placed between the dampers 1 and 2. It is rotatably installed in parallel with the dampers 1, 2. The dampers 1 and 2 and the seal plate 3 are mechanically separated from each other, and the exhaust pressure in the duct can be adjusted by using only the seal plate 3 to prevent a safety door or the like from operating the dampers 1 and 2 or the like. No safety device is installed. The seal plate 3 is installed so as to be parallel to the flow of exhaust gas in the bypass chimney 8 when it is fully opened, and the seal plate 3 is always 500 like the perforated plate in the conventional gas turbine combined equipment.
Since the exhaust gas at around ℃ is not received on the entire surface, the heat-resistant structure against high-temperature exhaust gas is simple. Further, the dampers 1 and 2 are set at positions where they do not hinder the flow of exhaust gas when they are fully opened, and are set to be parallel to the flow, like the seal plate 3.

【0008】運転モードの切替え時に排ガスボイラ5の
入口ダンパ4前後の圧力を同一にするために排気ダクト
内における排気圧力を上昇させる場合は、シールプレー
ト3を回転させてバイパス煙突8内の排気流れを阻害し
て排気圧力を上昇させる。ただし、シールプレート3の
みではバイパス煙突8全部を塞ぐことが無く、排気ダク
ト内における排気圧力が上がり過ぎることがないので安
全装置は不要となっている。また、バイパス煙突8を全
閉にする場合は、シールプレート3を閉じたままでダン
パ1,2を上昇させることにより全閉となる。このよう
にシールプレート3が回転可能に設けられていることに
より、ダンパ1,2が全閉位置から多少ずれていてもフ
レキシブルに排気圧力の調整が可能であり、またダンパ
1,2のシール性の向上にも役立つ。また、ガスタービ
ン6の単独運転時に排気ダクト内における排気圧力が上
昇しないので、ガスタービン6の運転効率が向上する。
また、シールプレート3はバイパス煙突8にダンパ1,
2と併設されているので、スペースが少なくてよい。ま
た、入口ダンパ4の切替え時に排気圧力が上がり過ぎる
ことがなく安全性が向上しているので、安全扉等の安全
装置を特に設置する必要がない。
When the exhaust pressure in the exhaust duct is increased in order to make the pressure before and after the inlet damper 4 of the exhaust gas boiler 5 the same when the operation mode is switched, the seal plate 3 is rotated and the exhaust flow in the bypass chimney 8 is increased. To increase exhaust pressure. However, since only the seal plate 3 does not block the entire bypass chimney 8 and the exhaust pressure in the exhaust duct does not rise excessively, the safety device is not necessary. Further, when the bypass chimney 8 is fully closed, it is fully closed by raising the dampers 1 and 2 while keeping the seal plate 3 closed. Since the seal plate 3 is rotatably provided as described above, the exhaust pressure can be flexibly adjusted even if the dampers 1 and 2 are slightly displaced from the fully closed positions, and the sealing performance of the dampers 1 and 2 is improved. Also helps improve. Further, since the exhaust pressure in the exhaust duct does not rise when the gas turbine 6 is operated alone, the operating efficiency of the gas turbine 6 is improved.
In addition, the seal plate 3 is attached to the bypass chimney 8, the damper 1,
Since it is attached to the 2nd, there is little space. Further, since the exhaust pressure does not rise excessively when switching the inlet damper 4 and the safety is improved, it is not necessary to install a safety device such as a safety door.

【0009】[0009]

【発明の効果】本発明に係るガスタービンコンバインド
設備は前記のように構成されており、ガスタービンの単
独運転時には排気ダクト内における排気圧力を下降させ
ることができるので、ガスタービンの効率が向上する。
また、運転モードの切替え時に排気ダクト内における排
気圧力が上がり過ぎることがないので、安全装置を特に
必要としない。
The gas turbine combined equipment according to the present invention is constructed as described above, and the exhaust pressure in the exhaust duct can be lowered when the gas turbine is operating alone, so that the efficiency of the gas turbine is improved. .
Further, since the exhaust pressure in the exhaust duct does not rise excessively when the operation mode is switched, a safety device is not particularly required.

【図面の簡単な説明】[Brief description of drawings]

【図1】図1(a)は本発明の一実施例に係るガスター
ビンコンバインド設備の断面図、同図(b)はそのダン
パおよびシールプレートの詳細断面図である。
FIG. 1 (a) is a sectional view of a gas turbine combined facility according to an embodiment of the present invention, and FIG. 1 (b) is a detailed sectional view of a damper and a seal plate thereof.

【図2】図2は従来のガスタービンコンバインド設備の
断面図である。
FIG. 2 is a sectional view of a conventional gas turbine combined facility.

【符号の説明】[Explanation of symbols]

1 ダンパ 2 ダンパ 3 シールプレート 4 入口ダンパ 5 排ガスボイラ 6 ガスタービン 8 バイパス煙突 11 助燃バーナ 1 damper 2 damper 3 seal plate 4 inlet damper 5 exhaust gas boiler 6 gas turbine 8 bypass chimney 11 auxiliary burner

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ガスタービンの排気ダクトにおけるバイ
パス煙突内に並列に設けられた複数のダンパと、該複数
のダンパの間に上記ダンパと並列に開閉可能に設けられ
たシールプレートとを備えたことを特徴とするガスター
ビンコンバインド設備。
1. A plurality of dampers provided in parallel in a bypass chimney in an exhaust duct of a gas turbine, and a seal plate provided between the plurality of dampers in parallel with the damper so as to be openable and closable. Gas turbine combined equipment.
JP19832492A 1992-07-24 1992-07-24 Gas turbine combined facility Withdrawn JPH0642735A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19832492A JPH0642735A (en) 1992-07-24 1992-07-24 Gas turbine combined facility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19832492A JPH0642735A (en) 1992-07-24 1992-07-24 Gas turbine combined facility

Publications (1)

Publication Number Publication Date
JPH0642735A true JPH0642735A (en) 1994-02-18

Family

ID=16389220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19832492A Withdrawn JPH0642735A (en) 1992-07-24 1992-07-24 Gas turbine combined facility

Country Status (1)

Country Link
JP (1) JPH0642735A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170078588A (en) 2014-10-31 2017-07-07 가부시키가이샤 요시노 고교쇼 Syringe container
JP2019124127A (en) * 2018-01-12 2019-07-25 三菱日立パワーシステムズ株式会社 Gas-turbine combination system and operation switching method therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170078588A (en) 2014-10-31 2017-07-07 가부시키가이샤 요시노 고교쇼 Syringe container
JP2019124127A (en) * 2018-01-12 2019-07-25 三菱日立パワーシステムズ株式会社 Gas-turbine combination system and operation switching method therefor
US11156130B2 (en) 2018-01-12 2021-10-26 Mitsubishi Power, Ltd. Gas turbine cogeneration system and operation mode change method therefor

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 19991005