JPS582A - Waste heat recovering boiler - Google Patents
Waste heat recovering boilerInfo
- Publication number
- JPS582A JPS582A JP9702481A JP9702481A JPS582A JP S582 A JPS582 A JP S582A JP 9702481 A JP9702481 A JP 9702481A JP 9702481 A JP9702481 A JP 9702481A JP S582 A JPS582 A JP S582A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- side plate
- waste heat
- heat exchanger
- recovery boiler
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、ガスタービンの高温排気によって水を加熱し
て蒸気タービン駆動用の蒸気を発生させる廃熱回収ボイ
ラに係シ、特に、内部を循環して廃熱を回収する伝熱管
の熱膨張による種々の不都合を解消し得る廃熱回収ボイ
ラに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waste heat recovery boiler that heats water using high-temperature exhaust gas from a gas turbine to generate steam for driving a steam turbine. The present invention relates to a waste heat recovery boiler that can eliminate various problems caused by thermal expansion of heat transfer tubes.
餓/図に示すように、廃熱回収ボイラlは、ガスタービ
ンλからの高温排気を下方から供給され。As shown in the figure, the waste heat recovery boiler l is supplied with high temperature exhaust from the gas turbine λ from below.
この高温排気を例えば過熱器J、プレ蒸発器ダ。This high-temperature exhaust gas is sent to, for example, a superheater J or a pre-evaporator.
脱硝装置!、高圧蒸発器4、高圧工;ノマイザ7゜低圧
蒸発器tおよび低圧エコノマイザ2勢の加熱(O
装置の間を通して煙突−から排気する過程において、ボ
イラー外に配設された低圧および高圧蒸気ドラムl/お
よびlコ、あるいは蒸気タービン13の復水器/4’か
らの水や蒸気を加熱し、前記ガスタービンコと共に発電
機イ5を回す蒸気タービン/3駆動用水蒸気を発生させ
る装置である。Denitration equipment! , high-pressure evaporator 4, high-pressure work; nomizer 7°; heating of the low-pressure evaporator t and 2 low-pressure economizers (O) In the process of exhausting air from the chimney through the equipment, the low-pressure and high-pressure steam drums installed outside the boiler l This is a device that heats water or steam from the condenser /4' of the steam turbine 13 or the steam turbine 13 to generate steam for driving the steam turbine /3 that rotates the generator 5 together with the gas turbine.
上記の廃熱回収ボイラの脱硝装置!を除く過熱器3から
低圧エコノマイザタに至る一連の加熱装置は、その主た
る構成要素はボイラ内を蛇行して循環する多数の伝熱管
/jであシ、これらの伝熱管/j 、 /!はボイラ内
に配設された支持板/4 、 /4によりて担持されて
いる。また、上記伝熱管/!は各加熱装置にそれぞれ1
本だけあるのではなく、加熱装置毎に多数本設けられて
おり、第2図および第3図に示すように、これら多数の
伝熱管/! 、 /j#iユニット毎に7個のヘッダ/
?Ktとめられ、とのヘッ゛ダ/7を介して、ボイラの
側板/lを貫通するように固定された筒状の管台lqに
接続されている。Denitration equipment for the waste heat recovery boiler mentioned above! The main components of the series of heating devices from the superheater 3 to the low-pressure economizer are a large number of heat exchanger tubes that meander and circulate within the boiler. is supported by support plates /4 and /4 arranged inside the boiler. Also, the above heat exchanger tube/! is 1 for each heating device.
There are not only books, but a large number of heat transfer tubes for each heating device, and as shown in FIGS. 2 and 3, there are many heat transfer tubes/! , /j#i 7 headers/ for each unit
? Kt is fixed and connected via header /7 to a cylindrical nozzle lq fixed so as to pass through the side plate /l of the boiler.
すなわち、外部配管と伝熱管/! 、 /!との接続は
上記管台19およびヘラf/7を介して行われるわけで
ある(第1図参照)。In other words, external piping and heat transfer tubes/! , /! The connection is made through the nozzle 19 and the spatula f/7 (see FIG. 1).
しかして、プラント運転時ボイラ内の伝熱管/j−。Therefore, the heat exchanger tube /j- in the boiler during plant operation.
ヘッダlりおよび管台/9などは数百度にも加熱せられ
、その結果伝熱管15は長さ方向に熱膨張する。The header 1, nozzle stub 9, etc. are heated to several hundred degrees, and as a result, the heat exchanger tube 15 thermally expands in the length direction.
ところが2伝熱管/jFi本数が非常に多いととに加え
て重量も大きいので、ボイラ内に固設された支持板/6
と伝熱管/jとの摩擦力が伝熱管/j−の伸びを拘束す
る方向に作用し、その結果伝熱管izとへラダ/7との
接合部に大きな応力が発生して亀裂が生じる危険がある
。However, if the number of 2 heat transfer tubes/jFi is very large, the weight is also large, so the support plate fixed inside the boiler/6
The frictional force between the heat exchanger tube /j and the heat exchanger tube /j acts in a direction that restricts the elongation of the heat exchanger tube /j-, and as a result, there is a risk that large stress will occur at the joint between the heat exchanger tube iz and the heat exchanger /j and cracks will occur. There is.
また、伝熱管/3のヘッダ/り方向への軸力が多数本分
合成されて、ヘッダlりを介して、ボイラの側板/lと
管台/qとの接合部に加わり、さらKまた。In addition, the axial force of the heat exchanger tube /3 in the direction of the header /3 is combined and applied to the joint between the boiler side plate /1 and the nozzle base /q via the header1, furthermore, K or .
ボイラ内面に内張シされ喪断熱材〃(第2図参照)Kよ
って比較的低温忙保たれている側板/gKは。The side plate/gK is kept at a relatively low temperature by the insulation material K (see Figure 2) lined inside the boiler.
半径方向に熱膨張する管台/?から大きな力が加わり、
これらの力は何れ4bIll板/lと管台/?との接合
部に悪影響を与え、廃熱回収ボイラの信頼性を低下させ
る。A nozzle that expands thermally in the radial direction/? A great force is applied from
Which of these forces are 4bIll plate/l and nozzle/? This adversely affects the joints with the waste heat recovery boiler and reduces the reliability of the waste heat recovery boiler.
そこで本発明の目的は、上記の不都合を解消し、伝熱管
や管台などの熱膨張圧よって亀裂や高い応力の発生など
の危険のない廃熱回収ボイラを提供するKある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned disadvantages and provide a waste heat recovery boiler that is free from the risk of cracking or high stress generation due to thermal expansion pressure of heat exchanger tubes, nozzles, etc.
以下本発明の実施例を第V図および第5図を参照して説
明する。Embodiments of the present invention will be described below with reference to FIGS. V and 5.
第V図において符号コ/#′i側板に開口した管台貫通
孔を示し、この管台貫通孔、2/#′i、従来の廃熱回
収ボイラにおけるそれとは異なり、大きな間隙を保って
管台/デを遊嵌させるに足る口径を有している。In Fig. V, the nozzle through hole 2/#'i opened in the side plate is shown. It has a diameter sufficient to fit the base/de loosely.
上記管台貫通孔コ/を遊嵌して側板/gを貫通した管台
/9Oボイラ外突出部は、管台受は−によって支持され
ている。この管台受けnFi、管台/デに結合される底
板nK、管台と嵌合する管台接合孔コダを開口させたカ
ップ状の部材で、その開口部を管台貫通孔、2/の周囲
に結合させることKよシ、@板/l外に一体的に装着さ
れている。すなわち、上記管台受けの底板nを貫通し、
その管台接合孔5eyc例えば圧入され、あるいは溶接
されることKよって底板HK結合された管台itは、ボ
イラ缶体の気密性を保ちつつ管台受は二を介して側板/
lK間接的に支持されている。The nozzle head/9O boiler external protrusion that loosely fitted into the nozzle through hole ko/ and passed through the side plate/g is supported by the nozzle holder. This nozzle holder nFi, the bottom plate nK that is connected to the nozzle/de, and the cup-shaped member that has the nozzle joint hole Koda that fits with the nozzle head opened, and the opening is the nozzle through hole, 2/ Rather than being connected to the surrounding area, it is integrally attached to the outside of the board. That is, it penetrates the bottom plate n of the nozzle holder,
The nozzle holder is connected to the bottom plate HK by press-fitting or welding, for example, to the nozzle holder joining hole 5eyc, while maintaining the airtightness of the boiler can.
lK is indirectly supported.
上記管台受けの底板2J#i、必要な強度を保持するこ
とを当然の前提として充分薄く、板厚方向すなわち管台
19の軸線方向に若干の弾性変形ができるよう罠なって
いる。The bottom plate 2J#i of the nozzle holder is sufficiently thin to maintain the necessary strength, and has a trap so that it can be slightly elastically deformed in the thickness direction, that is, in the axial direction of the nozzle holder 19.
一方、管台受は−の内側で前記管台貫通孔コ/の外部開
口の周囲には、管台コとの間に小間隙を保ってこれを包
囲するように放射状に配設された複数個の振れ止めの駒
オ、コが設けられている。On the other hand, on the inside of the nozzle holder, there are a plurality of radially arranged around the external opening of the nozzle through hole, with a small gap between the nozzle holder and the nozzle holder. Individual steady rest pieces are provided.
上記のように構成された本発明の一実施例による廃熱回
収ボイラは、運転時における前記伝熱管3.3のへ、ダ
/7および管台/デ方向への熱膨張は。In the waste heat recovery boiler according to one embodiment of the present invention configured as described above, the thermal expansion of the heat exchanger tubes 3.3 in the direction of 3, 3 and 7 and in the nozzle stub direction is as follows.
第V図に破線で示すように、管台受けの底板nの弾性変
形によって吸収される。As shown by the broken line in FIG. V, this is absorbed by the elastic deformation of the bottom plate n of the nozzle holder.
また、管台/デの半径方向の変位あるいは振動などは上
記駒:L!r 、 MKよって拘束され、管台受けの底
板nに加わる無理な力は緩和される。Also, the radial displacement or vibration of the nozzle/de is the above-mentioned piece: L! r, is restrained by MK, and the unreasonable force applied to the bottom plate n of the nozzle holder is alleviated.
第5図は本発明の変形実施例を示し、この実施例は、管
台受けの底板kを薄くせず、その代J)K@面に全爛に
わたってひだ部ムを形成することKよシ管台受け−KM
m性を付与したものである。FIG. 5 shows a modified embodiment of the present invention, in which the bottom plate k of the nozzle holder is not made thin, but instead a pleat is formed over the entire length of the K@ surface. Nozzle holder-KM
It has been given m-character.
第1図に示すものは、伝熱管/、1の熱膨張を上記ひだ
部ムの弾性変形によって吸収するので、第V図に示すも
のと比較して、伝熱管/jが非常に長くてその熱膨張量
が大きい場合にも適用できるという利点がある。In the one shown in Figure 1, the thermal expansion of the heat exchanger tube /,1 is absorbed by the elastic deformation of the folded portion, so compared to the one shown in Figure V, the heat exchanger tube /j is very long and its It has the advantage that it can be applied even when the amount of thermal expansion is large.
以上の説明から明らかなように1本発明は、管台を直接
ボイラの側板に固定せず、管台の軸線方向に可撓−を有
する管台受けを介して管台をボイラ側板に取付けるよう
圧したので、ボイラ運転時における伝熱管群のへ、ダ方
向への熱膨張が管台受けの弾性変形によって吸収され、
伝熱管とヘッダとの接合部における過大な応力集中およ
びこれに起因する接合部のひび割れや破損などの危険を
防止することができる。As is clear from the above description, one aspect of the present invention is to attach the nozzle to the boiler side plate through a nozzle support that is flexible in the axial direction of the nozzle, without directly fixing the nozzle to the boiler side plate. Because of the pressure, the thermal expansion of the heat exchanger tube group in the direction toward the direction during boiler operation is absorbed by the elastic deformation of the nozzle support.
Excessive stress concentration at the joint between the heat exchanger tube and the header and the risk of cracking or damage to the joint due to this can be prevented.
また、管台とボイラ側板の管台買通孔内周面との関には
比較的大きな間隙が保たれるので、断熱材によって比較
的低温和保たれる側板と高温になる管台との熱膨張の相
違による熱応力の発生が皆無となシ、従来この熱応力に
よつて発生する恐れがあった管台の亀裂なども防止する
ことができる。In addition, a relatively large gap is maintained between the nozzle head and the inner peripheral surface of the nozzle passage hole on the boiler side plate, so the side plate, which is kept relatively cool by the insulation, and the nozzle head, which becomes hot, are There is no generation of thermal stress due to differences in thermal expansion, and it is possible to prevent cracks in the nozzle stub, which could conventionally occur due to this thermal stress.
などの種々の効果を奏する。It has various effects such as.
第7図は廃熱回収ボイラ、ガスタービンおよび蒸気ター
ビン郷を組合せたコンバインドサイクル発電プラントの
系統線図、第2図はヘッダおよび管台接続部の線図的断
面図、97図は第1図m−III線による断面図、第V
図は本発明の一実施例による廃熱回収ボイラのへ、ダお
よび管台接続部の線図的断面図、第5図は本発明の変形
実施例を示す第V図と同様の断面図である。
/・・・廃熱回収ボイラ、コ用ガスl−ビン、/θ・・
・排気口、 /j・・・伝熱管、 /A−・・支持板、
/7・・・へ、ダ。
/ト・・側板、 /q・・・管台、〃・・・断熱材、コ
/・・・管台貫通孔、=・・・管台受け、咥・・・底板
、評・・・管台接合孔。
汀・・・駒、為・・・ひだ部。
出願人代理人 猪 股 清幕21¥1
尾3 図
奉4図Figure 7 is a system diagram of a combined cycle power plant that combines a waste heat recovery boiler, a gas turbine, and a steam turbine. Figure 2 is a diagrammatic cross-sectional view of the header and nozzle connection. Figure 97 is the diagram shown in Figure 1. Sectional view along line m-III, section V
The figure is a diagrammatic cross-sectional view of the connecting portion of the waste heat recovery boiler according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view similar to FIG. V showing a modified embodiment of the present invention. be. /...waste heat recovery boiler, gas l-bin for use, /θ...
・Exhaust port, /j...heat exchanger tube, /A-...support plate,
/7...Heh, da. /G...Side plate, /q...Nozzle holder, 〃...Insulation material, /...Nozzle holder through hole, =...Nozzle holder, Mouth...Bottom plate, Comment...Pipe Base joint hole. Seat...piece, purpose...fold. Applicant's agent Inomata Seimaku 21 yen 1 tail 3 illustrations 4 illustrations
Claims (1)
、上部に排気口をそれぞれ設け、内面に断熱材を張着し
た密閉缶体と、この缶体内を蛇行して微積するように配
設された多数の伝熱管と、加熱五二、ト毎に複数本の伝
熱管を接続されたヘッダと1缶体側板を貫通して、ヘッ
ダと缶体外配管とを相互Kli続する筒状の管台とを有
するものにおいて、上記缶体側板に開口する管台貫通孔
に管台を遊嵌させると共に、管台の缶体外央出部を、底
面に管台接合孔を開口させ。 開口部を缶体側板外面に結合させたカップ状の部材で、
管台軸線方向に可撓性を有する管台受けで支持し、一方
、上記管台貫通孔の外部開口部に、管台と小間−を保り
てこれを包囲するように配設された振れ止めの駒を設け
たことを特徴とする廃熱回収ボイラ。 しめるようにしたことを特徴とする特許請求の範囲第1
項記載の廃熱回収ボイラ。 J、上記管台受けの側面にひだ部を形成し、このひだ部
の弾性変形によシ、管台受けに可撓性を有せしめるよう
にしたことを特徴とする特許請求の範囲第1項記載の廃
熱回収ボイラ。[Scope of Claims] / A sealed can body with a supply port for high-temperature exhaust gas from a gas turbine in the lower part and an exhaust port in the top part, and a heat insulating material pasted on the inner surface, and a meandering part inside the can body. A large number of heat exchanger tubes arranged in a small pile, and a header with multiple heat exchanger tubes for each heating unit connected to each other, pass through one side plate of the can body, and interconnect the header and the piping outside the can body. In the case where the nozzle head is loosely fitted into the nozzle through hole opening in the side plate of the can body, and the nozzle head is loosely fitted into the nozzle head through hole opening in the can body side plate, and the nozzle head is connected to the can body by the nozzle joint hole in the bottom surface. Open it. A cup-shaped member with an opening connected to the outer surface of the side plate of the can.
The nozzle is supported by a flexible nozzle support in the nozzle axis direction, and on the other hand, a swing is provided at the external opening of the nozzle through hole so as to surround the nozzle and the nozzle while maintaining a space between the nozzle and the nozzle. A waste heat recovery boiler characterized by the provision of a stopper. Claim 1 characterized in that
Waste heat recovery boiler as described in section. J. Claim 1, characterized in that a pleat is formed on the side surface of the nozzle holder, and the elastic deformation of the pleat allows the nozzle holder to have flexibility. The waste heat recovery boiler described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9702481A JPS582A (en) | 1981-06-23 | 1981-06-23 | Waste heat recovering boiler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9702481A JPS582A (en) | 1981-06-23 | 1981-06-23 | Waste heat recovering boiler |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS582A true JPS582A (en) | 1983-01-05 |
Family
ID=14180847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9702481A Pending JPS582A (en) | 1981-06-23 | 1981-06-23 | Waste heat recovering boiler |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS582A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59231301A (en) * | 1983-06-14 | 1984-12-26 | バブコツク日立株式会社 | Supporter for heat transfer pipe |
JPS641201U (en) * | 1987-06-22 | 1989-01-06 | ||
JPH01100502A (en) * | 1987-10-13 | 1989-04-18 | Sumitomo Electric Ind Ltd | Converging rod lens |
JPH0293414A (en) * | 1988-09-29 | 1990-04-04 | Mitsubishi Cable Ind Ltd | Structure of incident terminal of optical fiber |
-
1981
- 1981-06-23 JP JP9702481A patent/JPS582A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59231301A (en) * | 1983-06-14 | 1984-12-26 | バブコツク日立株式会社 | Supporter for heat transfer pipe |
JPH0467082B2 (en) * | 1983-06-14 | 1992-10-27 | Babcock Hitachi Kk | |
JPS641201U (en) * | 1987-06-22 | 1989-01-06 | ||
JPH05641Y2 (en) * | 1987-06-22 | 1993-01-11 | ||
JPH01100502A (en) * | 1987-10-13 | 1989-04-18 | Sumitomo Electric Ind Ltd | Converging rod lens |
JPH0293414A (en) * | 1988-09-29 | 1990-04-04 | Mitsubishi Cable Ind Ltd | Structure of incident terminal of optical fiber |
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