JP2000291901A - Exhaust heat recovery boiler - Google Patents

Exhaust heat recovery boiler

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Publication number
JP2000291901A
JP2000291901A JP11096691A JP9669199A JP2000291901A JP 2000291901 A JP2000291901 A JP 2000291901A JP 11096691 A JP11096691 A JP 11096691A JP 9669199 A JP9669199 A JP 9669199A JP 2000291901 A JP2000291901 A JP 2000291901A
Authority
JP
Japan
Prior art keywords
panel
heat recovery
recovery boiler
exhaust heat
flue
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
JP11096691A
Other languages
Japanese (ja)
Inventor
Seiji Morishima
誠二 森島
Shinichi Mikamo
伸一 三鴨
Mitsugi Musashi
貢 武蔵
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 Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP11096691A priority Critical patent/JP2000291901A/en
Publication of JP2000291901A publication Critical patent/JP2000291901A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To improve rigidity of a panel situated upper stream of the direction an exhaust gas glow, through a simple structure. SOLUTION: High-temperature gas discharged from a gas turbine is introduced in an approximately horizontally installed rectangular flue, heat is recovered by a number of heat transfer pipes installed approximately vertically in the flue and steam is generated. In a so formed exhaust heat recovery boiler, two panels 12a and 12b forming one unit where a plurality of heat transfer pipes are bundled together are situated upstream and downstream of a high temperature gas flow. The panel 12a situated upstream and the panel 12b situated downstream are intercoupled through a fitment 25 to improve rigidity if the panel 12a situated upstream.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、排熱回収ボイラ
に係り、特に排熱回収ボイラに使用されるパネルと称さ
れる伝熱管束の支持構造に特徴のある排熱回収ボイラに
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust heat recovery boiler, and more particularly to an exhaust heat recovery boiler characterized by a support structure for a bundle of heat transfer tubes called a panel used in the exhaust heat recovery boiler.

【0002】[0002]

【従来の技術】急増する電力需要に応えるため、大容量
の火力発電所が建設されているが、これらの発電所のボ
イラは部分負荷時においても高い発電効率を得るために
変圧運転を行うことが要求されている。これは最近の電
力需要の特徴として、負荷の最大と最小の差が増大し、
火力発電はベースロード用から負荷調整用へと移行する
傾向にあるからである。すなわち、火力発電用ボイラは
ボイラ負荷が常に全負荷で運転されるものは少なく、7
5%負荷、50%負荷、25%負荷へと負荷を変えて運
転したり、ボイラの運転を停止させたりすることが行わ
れている。ボイラの運転を停止させるものとしては、い
わゆる毎日起動停止(Daily Start Stop、以下「DS
S」と称する。)運転や、週末起動停止(Weekly Start
Stop、以下「WSS」と称する。)運転が知られ、こ
れらの運転を行って発電効率を向上させることが行われ
ている。
2. Description of the Related Art Large-capacity thermal power plants are being constructed in order to meet the rapidly increasing demand for electric power. Is required. This is a characteristic of recent power demand, the difference between the maximum and minimum load increases,
This is because thermal power generation tends to shift from base load use to load adjustment use. That is, few boilers for thermal power generation always operate at full boiler load.
The operation of changing the load to 5% load, 50% load, and 25% load, and stopping the operation of the boiler are performed. To stop the operation of the boiler, a so-called Daily Start Stop (hereinafter referred to as “DS”) is used.
S ". ) Driving and Weekly Start / Stop
Stop, hereinafter referred to as "WSS". ) Driving is known, and these operations are performed to improve power generation efficiency.

【0003】例えば高効率発電の一環として、最近複合
発電プラントが注目されている。この複合発電プラント
は、ガスタービンによる発電と、排熱回収ボイラによっ
て回収した熱を利用した発電とを組み合わせたものであ
る。すなわち、まず、ガスタービンによる発電を行うと
とともに、ガスタービンから排出される排ガス中の熱を
排熱回収ボイラによって回収し、排熱回収ボイラで発生
した蒸気により蒸気タービンを駆動させて発電を行うも
のである。この複合発電プラントはガスタービンによる
発電と、蒸気タービンによる発電を同時に行うことがで
きるので、発電効率が高いことに加え、ガスタービンは
負荷応答性に優れていることから、特にDSS運転やW
SS運転を行うプラントには有効である。
For example, as part of high-efficiency power generation, a combined cycle power plant has recently been receiving attention. This combined cycle power plant combines power generation by a gas turbine and power generation using heat recovered by an exhaust heat recovery boiler. That is, first, while performing power generation by the gas turbine, heat in the exhaust gas discharged from the gas turbine is recovered by the heat recovery steam generator, and the steam generated by the heat recovery steam generator drives the steam turbine to generate power. Things. This combined cycle power plant can simultaneously perform power generation using a gas turbine and power generation using a steam turbine. In addition to high power generation efficiency, the gas turbine also has excellent load response, so it is particularly suitable for DSS operation and W
This is effective for plants that perform SS operation.

【0004】しかし、この複合発電プラントでは、LN
Gや灯油などのクリーンな燃料を使用するので、SOx
やダスト量は少なくなるが、ガスタービンの燃焼に多量
の酸素を必要とし、また、高温燃焼のため排ガス中のN
Ox量が増加する。そのため、脱硝装置を内蔵した排熱
回収ボイラが開発されている。
However, in this combined cycle power plant, LN
Since clean fuel such as G and kerosene is used, SOx
And the amount of dust are small, but a large amount of oxygen is required for gas turbine combustion.
Ox amount increases. Therefore, an exhaust heat recovery boiler incorporating a denitration device has been developed.

【0005】図4および図5に一般的な排熱回収ボイラ
の構造を示す。図4は排熱回収ボイラの系統を示す概略
図、図5は図4の断面図である。
FIGS. 4 and 5 show the structure of a general exhaust heat recovery boiler. FIG. 4 is a schematic diagram showing the system of the exhaust heat recovery boiler, and FIG. 5 is a sectional view of FIG.

【0006】図4において、排熱回収ボイラは、ほぼ矩
形の断面形状を有するの煙道100内に配置され、矢印
で示す排ガスGの流れ方向上流側から過熱器1、第1段
高圧蒸発器2、脱硝装置3、第2段高圧蒸発器4、高圧
節炭器7、低圧蒸発器8、低圧節炭器11から主に構成
され、過熱器1、第1段高圧蒸発器2、第2段高圧蒸発
器4、および高圧節炭器7は高圧ドラム5に接続され、
高圧ドラム5と第2段高圧蒸発器4の下部との間には降
水管6が設けられている。また、低圧蒸発器8と低圧節
炭器11は低圧ドラム9に接続され、低圧ドラム9と低
圧蒸発器8の下部との間には、降水管10が設けられて
いる。なお、図5において符号13はボイラの天井壁、
いわゆる上面ケーシングを示し、符号12Pは排熱回収
ボイラの伝熱管12を束ねたいわゆるパネルを示す。
In FIG. 4, an exhaust heat recovery boiler is disposed in a flue 100 having a substantially rectangular cross-sectional shape, and a superheater 1 and a first-stage high-pressure evaporator are arranged from the upstream side in the flow direction of the exhaust gas G indicated by the arrow. 2, mainly composed of a denitration device 3, a second-stage high-pressure evaporator 4, a high-pressure economizer 7, a low-pressure evaporator 8, and a low-pressure economizer 11, a superheater 1, a first-stage high-pressure evaporator 2, and a second The high pressure evaporator 4 and the high pressure economizer 7 are connected to the high pressure drum 5,
A downcomer 6 is provided between the high-pressure drum 5 and the lower part of the second-stage high-pressure evaporator 4. The low-pressure evaporator 8 and the low-pressure economizer 11 are connected to the low-pressure drum 9, and a downcomer 10 is provided between the low-pressure drum 9 and the lower part of the low-pressure evaporator 8. In FIG. 5, reference numeral 13 denotes a boiler ceiling wall,
Reference numeral 12P denotes a so-called panel on which the heat transfer tubes 12 of the exhaust heat recovery boiler are bundled.

【0007】このように構成された排熱回収ボイラで
は、排ガスGは、過熱器1、第1段高圧蒸発器2を経て
脱硝装置3に至り、排ガスG中の窒素酸化物(NOx)
が除去される。つづいて排ガスGは第2段高圧蒸発器
4、高圧炭節器7、低圧蒸発器8、および低圧節炭器1
1を経て排出され、排ガスG中の排熱が回収される。こ
の間に発生した高圧蒸気S1と低圧蒸気S2は、蒸気タ
ービンの動力源と所内熱源として利用される。
In the exhaust heat recovery boiler constructed as described above, the exhaust gas G passes through the superheater 1 and the first-stage high-pressure evaporator 2 to reach the denitration device 3, where nitrogen oxides (NOx) in the exhaust gas G are discharged.
Is removed. Subsequently, the exhaust gas G is supplied to the second-stage high-pressure evaporator 4, the high-pressure coal evaporator 7, the low-pressure evaporator 8, and the low-pressure evaporator 1
1 and the exhaust heat in the exhaust gas G is recovered. The high-pressure steam S1 and the low-pressure steam S2 generated during this time are used as a power source of the steam turbine and a heat source in the plant.

【0008】排熱回収ボイラはガスタービンからの排ガ
スGを通過させる煙道100内に配置され、図5に示す
ように煙道100内部にパネル12が配置される形にな
るので、ガスタービンから流入してくる排ガスGによる
応力に耐え得るようにパネル12Pをサポートする必要
がある。図6に排熱回収ボイラの排ガス流入方向最も上
流側に設置されたパネル12Pのサポート構造の一例を
示す。このパネル12Pは、ガスタービンから流入して
くる排ガスGによる応力が最も大きくなる位置の過熱器
1に対応している。
The exhaust heat recovery boiler is disposed in a flue 100 through which exhaust gas G from a gas turbine passes, and a panel 12 is disposed inside the flue 100 as shown in FIG. It is necessary to support the panel 12P so as to be able to withstand the stress caused by the incoming exhaust gas G. FIG. 6 shows an example of a support structure of the panel 12P installed at the most upstream side in the exhaust gas inflow direction of the exhaust heat recovery boiler. The panel 12P corresponds to the superheater 1 at a position where the stress caused by the exhaust gas G flowing from the gas turbine is the largest.

【0009】この過熱器1のパネル12Pは排ガスGの
流れ方向上流側に伝熱管12−1、12−2を2列配置
した2列パネル12aと、下流側に伝熱管12−3、1
2−4、12−5を3列配置した3列パネル12bとか
らなり、両パネル12a,12bは前後連結金具23に
よって一体化されている。各パネル12a,12bの伝
熱管12−1,12−2および12−3,12−4,1
2−5はそれぞれ排ガスGの流れを横切る方向に水平に
支持されている。この支持は、下から上にそれぞれ設け
られた第1段ないし第8水平サポート14〜21によっ
て行われる。また、排ガスGの流れ方向下流側の3列パ
ネル12bの第3段水平サポート16および第5段水平
サポート18には補強用形鋼22が設けられている。さ
らに、排熱回収の関係上、3列配置に比べて強度的に弱
い配置となっている2列パネル12aは、下流側の3列
パネル12bと近接して配置され、スペース的に補強用
形鋼22を配置する余裕がないので、図7および図8に
示すような補強板24によってサポートされている。こ
の補強板24は、通常、発生応力が大きい中央部、例え
ば第3段ないし第6段サポート16〜19に設けられて
いる。なお、図7は図6の要部平面図、図8は排ガスG
の流れ方向上流側から見た図6の要部正面図である。補
強板24は図7および図8から分かるように水平サポー
トに設置されており、これによりガスタービンから流入
してくる排ガスGによる応力に十分耐え得る断面係数を
持たせるようにしている。
The panel 12P of the superheater 1 has a two-row panel 12a in which heat transfer tubes 12-1 and 12-2 are arranged in two rows on the upstream side in the flow direction of the exhaust gas G, and the heat transfer tubes 12-3 and 1-2 on the downstream side.
It consists of a three-row panel 12b in which 2-4 and 12-5 are arranged in three rows, and both panels 12a and 12b are integrated by front and rear connection fittings 23. Heat transfer tubes 12-1, 12-2 and 12-3, 12-4, 1 of each panel 12a, 12b.
2-5 are supported horizontally in a direction crossing the flow of the exhaust gas G. This support is provided by first to eighth horizontal supports 14 to 21 provided from bottom to top. Further, a reinforcing section steel 22 is provided on the third-stage horizontal support 16 and the fifth-stage horizontal support 18 of the three-row panel 12b on the downstream side in the flow direction of the exhaust gas G. Further, due to the waste heat recovery, the two-row panel 12a, which is weaker in strength than the three-row layout, is arranged close to the three-row panel 12b on the downstream side and has a space-saving reinforcing shape. Since there is no room for disposing the steel 22, it is supported by a reinforcing plate 24 as shown in FIGS. The reinforcing plate 24 is usually provided at a central portion where the generated stress is large, for example, at the third to sixth stage supports 16 to 19. 7 is a plan view of a main part of FIG. 6, and FIG.
FIG. 7 is a front view of a main part of FIG. 6 viewed from the upstream side in the flow direction of FIG. As can be seen from FIGS. 7 and 8, the reinforcing plate 24 is installed on the horizontal support so that the reinforcing plate 24 has a section modulus enough to withstand the stress caused by the exhaust gas G flowing from the gas turbine.

【0010】このように従来では、2列パネル12aの
断面係数を増加させる手段として補強板24を水平サポ
ートに設置する方法を採用している。
As described above, conventionally, as a means for increasing the section modulus of the two-row panel 12a, a method of installing the reinforcing plate 24 on the horizontal support is adopted.

【0011】[0011]

【発明が解決しようとする課題】このように従来では、
補強板24を2列パネル12aの水平サポートに設ける
だけで強度的な問題が生じることはなかったが、昨今、
ガスタービンと排熱回収ボイラとの配置を変更し、両者
を近接して配置したり、排気サイレンサの省略などによ
って排熱回収ボイラに流入する排ガスGの条件が厳しく
なってきており、流速の大きな排ガスGがパネル、特に
流れ方向上流側に位置する2列パネル12aに流入する
ので、前述の図6に示したような構造では、強度的に不
満がでてきた。具体的には、2列パネル12aを補強板
24で補強しても、補強用形鋼22で補強し、しかも3
列で構成されている3列パネル12b程度の強度を確保
することはできない。
As described above, conventionally,
Although there was no problem in strength simply by providing the reinforcing plate 24 on the horizontal support of the two-row panel 12a, recently,
The conditions of the exhaust gas G flowing into the exhaust heat recovery boiler are becoming stricter by changing the arrangement of the gas turbine and the exhaust heat recovery boiler, disposing them close to each other, and omitting the exhaust silencer. Since the exhaust gas G flows into the panel, particularly the two-row panel 12a located on the upstream side in the flow direction, the structure as shown in FIG. Specifically, even if the two-row panel 12a is reinforced with the reinforcing plate 24, it is reinforced with the reinforcing shaped steel 22, and
It is not possible to ensure the strength of the three-row panel 12b composed of rows.

【0012】本発明は、このような従来技術の問題点に
鑑みてなされたもので、その目的は、排ガス流れ方向上
流側に設置されるパネルの剛性を簡単に向上させること
ができるパネルの支持構造を備えた排熱回収ボイラを提
供することにある。
The present invention has been made in view of such problems of the prior art, and has as its object to support a panel which can easily improve the rigidity of a panel installed on the upstream side in the exhaust gas flow direction. An object of the present invention is to provide an exhaust heat recovery boiler having a structure.

【0013】[0013]

【課題を解決するための手段】前記目的を達成するた
め、本発明は、ガスタービンから排出される高温ガスを
煙道に導入し、前記煙道の中にほぼ垂直に設置された多
数の伝熱管によって熱を回収し、蒸気を発生させる排熱
回収ボイラにおいて、前記伝熱管を複数個束ねて1単位
としたパネルを、前記高温ガスの流れ方向上流側と下流
側の少なくとも2つの位置に配置し、上流側のパネルと
下流側のパネルとを両者の相対的な位置を規定する固定
手段により連結したことを特徴とする。この場合、煙道
はほぼ矩形に形成され、固定手段としては両者を連結す
る連結金具が使用できる。
In order to achieve the above object, the present invention introduces a high-temperature gas discharged from a gas turbine into a flue, and comprises a plurality of transmission pipes installed substantially vertically in the flue. In a waste heat recovery boiler that recovers heat by a heat pipe and generates steam, a panel in which a plurality of the heat transfer tubes are bundled into one unit is disposed at at least two positions on the upstream side and the downstream side in the flow direction of the high-temperature gas. The panel on the upstream side and the panel on the downstream side are connected to each other by fixing means for defining a relative position between them. In this case, the flue is formed in a substantially rectangular shape, and a connecting fitting for connecting the two can be used as the fixing means.

【0014】[0014]

【発明の実施の形態】以下、本発明の実施形態について
図面を参照して説明する。なお、以下の説明において、
前述の従来例と同等の各部には同一の参照符号を付し、
重複する説明は適宜省略する。
Embodiments of the present invention will be described below with reference to the drawings. In the following description,
The same parts as those in the conventional example described above are denoted by the same reference numerals,
Duplicate description will be omitted as appropriate.

【0015】図1は本発明の実施形態に係るパネルのサ
ポート構造を示す斜視図で、前述の図6に対応する構成
を示す図である。この場合も、排熱回収ボイラの排ガス
流入方向最も上流側に設置され、ガスタービンから流入
してくる排ガスGによる応力が最も大きくなる位置の過
熱器1に設けられるパネル12a,12bを示してい
る。この実施形態では、図2の要部平面図、図3の要部
側面図に示すように上流側の2列パネル12aと下流側
の3列パネル12bとを金具(固定手段)25で連結
し、両パネル12a,12bの一体化を図るようにして
いる。金具25は所定の水平サポート、例えば第3段水
平サポート16と第5段水平サポート18に締結して固
定する。この金具25を取り付けるサポートの位置はサ
ポートの数や位置に応じて適宜設定される。その際、前
記補強板24を介して金具25を取り付けてもよいし、
補強板24を省略して金具25を取り付けてもよい。
FIG. 1 is a perspective view showing a support structure of a panel according to an embodiment of the present invention, showing a structure corresponding to FIG. 6 described above. Also in this case, the panels 12a and 12b are provided on the superheater 1 which are installed at the most upstream side in the exhaust gas inflow direction of the exhaust heat recovery boiler and at which the stress due to the exhaust gas G flowing from the gas turbine becomes the largest. . In this embodiment, the two-row panel 12a on the upstream side and the three-row panel 12b on the downstream side are connected by metal fittings (fixing means) 25 as shown in the plan view of the main part of FIG. 2 and the side view of the main part of FIG. The two panels 12a and 12b are integrated. The metal fitting 25 is fastened and fixed to a predetermined horizontal support, for example, a third horizontal support 16 and a fifth horizontal support 18. The position of the support to which the metal fitting 25 is attached is appropriately set according to the number and position of the support. At that time, a metal fitting 25 may be attached via the reinforcing plate 24,
The metal plate 25 may be attached without the reinforcing plate 24.

【0016】このように過熱器1の排ガスGの流れ方向
上流側の2列パネル12aと下流側の3列パネル12b
とを金具25によって連結すると、両者が一体化される
ことにより、過熱器1の2列パネル12aは補強板24
のみによる補強に比べて剛性が大きくなり、結果として
補強板24は不要となり、もしくは小寸のもので十分と
なる。また、補強板24を設置する場合に比べて設置す
る段数を減らすことができる。
As described above, the two-row panel 12a on the upstream side in the flow direction of the exhaust gas G from the superheater 1 and the three-row panel 12b on the downstream side
Are connected by a metal fitting 25, and the two are integrated, whereby the two-row panel 12a of the superheater 1 is connected to the reinforcing plate 24.
The rigidity is increased as compared with the reinforcement by only the reinforcement, and as a result, the reinforcing plate 24 becomes unnecessary, or a small one is sufficient. Further, the number of steps to be installed can be reduced as compared with the case where the reinforcing plate 24 is installed.

【0017】具体的には、従来例では図6に示すように
前記2列パネル12aに補強板24を設置する場合は、
強度上、少なくとも第3段、第4段、第5段および第6
段の水平サポート16,17,18,19に設置する必
要があったが、前記金具25を使用すれば、図1に示す
ように第3段水平サポート16と第5段水平サポート1
8のみに設置すれば十分であり、しかも、補強板24を
設置したときよりも高剛性となるので、昨今の排熱回収
ボイラのようにガスタービンGから高速で排ガスが流入
する場合でも十分に対応することができる。
Specifically, in the conventional example, as shown in FIG. 6, when the reinforcing plate 24 is installed on the two-row panel 12a,
In terms of strength, at least the third, fourth, fifth and sixth stages
Although it was necessary to install the horizontal supports 16, 17, 18, and 19 of the steps, the use of the metal fittings 25 makes it possible to use the third horizontal support 16 and the fifth horizontal support 1 as shown in FIG.
8 is sufficient and more rigid than when the reinforcing plate 24 is installed. Therefore, even when the exhaust gas flows from the gas turbine G at a high speed as in a recent exhaust heat recovery boiler, it is sufficient. Can respond.

【0018】なお、金具25の水平方向の取り付け個数
や取り付け間隔は排熱回収ボイラのサイズや特性に応じ
て適宜設定される。その際、剛性の向上は著しいので必
要以上に取り付けることのないように配慮する必要があ
る。その他、とくに説明しない各部は前述の従来例と同
等に構成されている。
Note that the number of mounting brackets 25 in the horizontal direction and the mounting intervals are appropriately set according to the size and characteristics of the heat recovery steam generator. At that time, since the rigidity is remarkably improved, it is necessary to take care not to attach the components more than necessary. The other parts not particularly described are configured in the same manner as the above-described conventional example.

【0019】[0019]

【発明の効果】以上のように、本発明によれば、前記伝
熱管を複数個束ねて1単位としたパネルを、前記高温ガ
スの流れ方向上流側と下流側の少なくとも2つの位置に
配置し、上流側のパネルと下流側のパネルとを固定手
段、例えば連結金具により連結したので、上流側に位置
にするパネルの剛性を簡単な構成で向上させることがで
きる。
As described above, according to the present invention, a panel in which a plurality of the heat transfer tubes are bundled into one unit is disposed at at least two positions on the upstream side and the downstream side in the flow direction of the high-temperature gas. Since the upstream panel and the downstream panel are connected by a fixing means, for example, a connection fitting, the rigidity of the panel located on the upstream side can be improved with a simple configuration.

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

【図1】本発明の実施形態に係る過熱器の排ガス流れ方
向上流側と下流側のパネルを金具で締結した状態を示す
斜視図である。
FIG. 1 is a perspective view showing a state in which panels on an upstream side and a downstream side in a flow direction of exhaust gas of a superheater according to an embodiment of the present invention are fastened with metal fittings.

【図2】図1の金具による支持構造を示す要部平面図で
ある。
FIG. 2 is a plan view of a main part showing a support structure using the metal fittings of FIG. 1;

【図3】図2の側面図である。FIG. 3 is a side view of FIG. 2;

【図4】従来から実施されている排熱回収ボイラの概略
構成を示す図である。
FIG. 4 is a diagram showing a schematic configuration of a conventional heat recovery steam generator.

【図5】図4のA−A線断面図である。FIG. 5 is a sectional view taken along line AA of FIG. 4;

【図6】従来から行なわれているパネルの補強構造を示
す斜視図である。
FIG. 6 is a perspective view showing a conventional panel reinforcing structure.

【図7】図6の要部平面図である。FIG. 7 is a plan view of a main part of FIG. 6;

【図8】図7の正面図である。FIG. 8 is a front view of FIG. 7;

【符号の説明】[Explanation of symbols]

1 過熱器 12 伝熱管 12P パネル 12a 2列パネル 12b 3列パネル 14,15,16,17,18,19,20,21 水
平サポート 25 金具
DESCRIPTION OF SYMBOLS 1 Superheater 12 Heat transfer tube 12P panel 12a 2 row panel 12b 3 row panel 14,15,16,17,18,19,20,21 Horizontal support 25 Metal fitting

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ガスタービンから排出される高温ガスを
煙道に導入し、前記煙道の中に設置された多数の伝熱管
によって熱を回収し、蒸気を発生させる排熱回収ボイラ
において、 前記伝熱管を複数個束ねて1単位としたパネルを、前記
高温ガスの流れ方向上流側と下流側の少なくとも2つの
位置に配置し、上流側のパネルと下流側のパネルとを両
者の相対的な位置を設定する固定手段により連結したこ
とを特徴とする排熱回収ボイラ。
1. A waste heat recovery boiler that introduces high-temperature gas discharged from a gas turbine into a flue, collects heat by a plurality of heat transfer tubes installed in the flue, and generates steam. Panels in which a plurality of heat transfer tubes are bundled into one unit are arranged at at least two positions on the upstream side and the downstream side in the flow direction of the high-temperature gas, and the panel on the upstream side and the panel on the downstream side are relative to each other. An exhaust heat recovery boiler connected by a fixing means for setting a position.
【請求項2】 前記煙道が矩形断面に形成され、ほぼ水
平に設置されていることを特徴とする請求項1記載の排
熱回収ボイラ。
2. The exhaust heat recovery boiler according to claim 1, wherein the flue has a rectangular cross section and is installed substantially horizontally.
【請求項3】 前記固定手段が連結金具からなることを
特徴とする請求項1記載の排熱回収ボイラ。
3. An exhaust heat recovery boiler according to claim 1, wherein said fixing means comprises a connection fitting.
JP11096691A 1999-04-02 1999-04-02 Exhaust heat recovery boiler Pending JP2000291901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11096691A JP2000291901A (en) 1999-04-02 1999-04-02 Exhaust heat recovery boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11096691A JP2000291901A (en) 1999-04-02 1999-04-02 Exhaust heat recovery boiler

Publications (1)

Publication Number Publication Date
JP2000291901A true JP2000291901A (en) 2000-10-20

Family

ID=14171815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11096691A Pending JP2000291901A (en) 1999-04-02 1999-04-02 Exhaust heat recovery boiler

Country Status (1)

Country Link
JP (1) JP2000291901A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013057463A (en) * 2011-09-08 2013-03-28 Babcock Hitachi Kk Exhaust heat recovery boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013057463A (en) * 2011-09-08 2013-03-28 Babcock Hitachi Kk Exhaust heat recovery boiler

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