JPH11241804A - Supporting structure - Google Patents
Supporting structureInfo
- Publication number
- JPH11241804A JPH11241804A JP4391198A JP4391198A JPH11241804A JP H11241804 A JPH11241804 A JP H11241804A JP 4391198 A JP4391198 A JP 4391198A JP 4391198 A JP4391198 A JP 4391198A JP H11241804 A JPH11241804 A JP H11241804A
- Authority
- JP
- Japan
- Prior art keywords
- supported
- support
- supported object
- boiler
- vertical
- 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- Withdrawn
Links
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- Supports For Pipes And Cables (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、重量物の支持装置
に係わり、特に温度変化によって底部の大きさが変化す
るような、例えば排熱回収ボイラの支持架構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a heavy load, and more particularly to a support frame for a heat recovery steam generator, for example, in which the size of a bottom portion changes with a change in temperature.
【0002】[0002]
【従来の技術】−般に、コンバインドサイクル発電プラ
ントにおいては、ガスタービン等の排ガスを熱源とし
て、蒸気タービンの駆動蒸気を発生させる排熱回収ボイ
ラが用いられる。なお、図中の矢印Gは排ガスの流れる
方向を示し、以下他の図面においても同様である。2. Description of the Related Art Generally, in a combined cycle power plant, an exhaust heat recovery boiler that generates steam for driving a steam turbine using exhaust gas from a gas turbine or the like as a heat source is used. The arrow G in the figure indicates the direction in which the exhaust gas flows, and the same applies to other drawings hereinafter.
【0003】図8は、従来の排熱回収ボイラの一例を示
すものである。この排熱回収ボイラ32は、機器の上部
に蒸気ドラムを配置し、伝熱管を鉛直方向に設置した横
置き形の自然循環形ボイラである。ボイラダクト1内に
は、過熱器34、高圧蒸発器35、脱硝装置36、高圧
節炭器37、低圧蒸発器38、低圧節炭器39が配置さ
れている。図8において、ガスタービン等からの排ガス
(矢印)は排熱回収ボイラ32に流入し、まず、過熱器
34、高圧蒸発器35を経て脱硝装置36に至り、含有
する窒素酸化物が除去された後、高圧節炭器37、低圧
蒸発器38、低圧節炭器39を順次通過し、各伝熱管内
の内部流体と熱交換を行う。高圧蒸気ドラム40及び低
圧蒸気ドラム41では、各圧力の蒸発器内で発生した二
相流が流入し、蒸気と缶水とに分離される。発生した蒸
気は図示しない蒸気タービンに送られる。FIG. 8 shows an example of a conventional exhaust heat recovery boiler. The exhaust heat recovery boiler 32 is a horizontal type natural circulation boiler in which a steam drum is arranged above the equipment and heat transfer tubes are installed in a vertical direction. In the boiler duct 1, a superheater 34, a high-pressure evaporator 35, a denitration device 36, a high-pressure economizer 37, a low-pressure evaporator 38, and a low-pressure economizer 39 are arranged. In FIG. 8, exhaust gas (arrow) from a gas turbine or the like flows into an exhaust heat recovery boiler 32, and firstly, reaches a denitration device 36 via a superheater 34 and a high-pressure evaporator 35, where nitrogen oxides contained therein are removed. Thereafter, the heat passes through the high-pressure economizer 37, the low-pressure evaporator 38, and the low-pressure economizer 39 in order to exchange heat with the internal fluid in each heat transfer tube. In the high-pressure steam drum 40 and the low-pressure steam drum 41, the two-phase flow generated in the evaporator of each pressure flows in and is separated into steam and can water. The generated steam is sent to a steam turbine (not shown).
【0004】図8に示した自然循環形排熱回収ボイラ
は、強制循環形の排熱回収ボイラと比較すると、循環ポ
ンプが不要であり、所内動力を軽減できるという利点に
加えて、地上からボイラ最上部までの高さを低<抑える
ことができ、ボイラを自立構造とすることが可能となる
などの長所を有しているため、多くのコンバインドサイ
クル発電所で採用される傾向にある。The natural-circulation-type exhaust heat recovery boiler shown in FIG. 8 does not require a circulation pump as compared with a forced circulation-type exhaust heat recovery boiler, and has the advantage of reducing power in the plant. It has advantages such as the height to the top can be kept low and the boiler can be made to be a self-supporting structure. Therefore, the boiler tends to be used in many combined cycle power plants.
【0005】ところで、一般にかかる排熱回収ボイラ
は、現地での工期を短縮するため、工場で全体を一括ま
たは複数に分割して、耐圧部及びケーシング等のボイラ
本体のみならず、配管、足場、計装設備等までも工場に
て組込み、現地へ搬入、据え付けを行う、いわゆるモジ
ュール化工法が採用される。図8に示す排熱回収ボイラ
は2分割モジュール型で、各モジュールの長さは約10
m の排熱回収ボイラで、各モジュール間にはエキスパン
ションジョイント42、43が配設されている。このモ
ジュールの重さは1000ton 程度、或いはそれを越え
るものもある。この排熱回収ボイラモジュールの輸送
時、据え付け時等の移動は、自走式台車をケーシング底
部に潜り込ませ持ち上げることによって行うのが通例で
ある。このためケーシング底部は自走式台車の車高であ
る3m 程度、地面より高い位置に保持する必要があり、
支持架構33にてボイラダクト1を支持する構造となっ
ている。By the way, in order to shorten the construction period on site, the exhaust heat recovery boiler is generally divided into a whole or a plurality of parts at a factory, and not only a boiler body such as a pressure-resistant part and a casing, but also piping, a scaffold, The so-called modularization method, in which the instrumentation equipment is installed in the factory, brought into the site, and installed, is adopted. The exhaust heat recovery boiler shown in FIG. 8 is a two-part module type, and the length of each module is about 10
m, and expansion joints 42 and 43 are disposed between the modules. This module weighs around 1000 tons or even more. In general, movement of the exhaust heat recovery boiler module during transportation or installation is performed by moving a self-propelled truck into the bottom of the casing and lifting it. For this reason, the bottom of the casing needs to be held at a height of about 3 m, which is the height of the self-propelled bogie, higher than the ground,
The support frame 33 supports the boiler duct 1.
【0006】ボイラダクト1は、高温の排ガスが通過す
ることから、通常ケーシング板内面に保温を施工し、外
表面温度を数10℃程度に保持できるような構造として
いる。一方、支持架構33は常温であり、ケーシングと
最大数10℃の温度差が生じるため、ケーシングと支持
架構33は熱膨張差が生じる。このため支持架構33
は、図9〜10に示すように、水平方向の据付面27上
に配置され、この据付面27の上面側にボイラダクト1
を支持する複数の支柱2、2を配置し、この支柱2、2
間を連結する梁3と、鉛直ブレース4で支持されるトラ
ス構造である。このように構成される支持架構33は、
支持点14〜22のうち、ーつの支持点18のみが固定
支持点であり、残りの支持点14〜17、19〜22は
メタルタッチまたは滑り板を使った摺動可能な滑動支持
点に形成されており、熱膨張に起因する熱歪みを吸収で
きるように構成されていた。[0006] The boiler duct 1 has a structure in which high-temperature exhaust gas passes therethrough, so that the inner surface of the casing plate is usually kept warm and the outer surface temperature can be maintained at about several tens of degrees Celsius. On the other hand, since the temperature of the support frame 33 is room temperature and a temperature difference of up to several tens of degrees Celsius occurs between the casing and the support frame 33, a difference in thermal expansion occurs between the casing and the support frame 33. Therefore, the support frame 33
Are arranged on a horizontal installation surface 27 as shown in FIGS. 9 to 10, and the boiler duct 1
Are arranged, and the columns 2, 2
It is a truss structure supported by beams 3 connecting the spaces and vertical braces 4. The support frame 33 thus configured is
Of the support points 14 to 22, only one support point 18 is a fixed support point, and the remaining support points 14 to 17 and 19 to 22 are formed as slidable slide support points using a metal touch or a slide plate. The configuration is such that thermal distortion caused by thermal expansion can be absorbed.
【0007】また、かかる排熱回収ボイラの支持架構3
3は、自重による鉛直荷重、ボイラ内圧による鉛直/水
平荷重、暴風や地震時の水平荷重等を支持し、据付面2
7(基礎)へ伝達する機能を有している。ボイラダクト
に作用する鉛直荷重は、図8に示すボイラダクト外周に
設置したバックステイ29を介して支持架構33の支柱
2、2…に伝達され、据付面27(基礎)へ伝達する。
また、地震時等の水平力は、ボイラダクト重心に転倒モ
ーメントとして作用するため、これを支持架構33上面
にて引き抜き、圧縮力及びせん断力として受け、据付面
27(基礎)へ伝達される。Further, a support frame 3 for such an exhaust heat recovery boiler is provided.
3 supports vertical load due to its own weight, vertical / horizontal load due to boiler internal pressure, horizontal load in case of storm or earthquake, etc.
7 (basic). The vertical load acting on the boiler duct is transmitted to the columns 2, 2,... Of the support frame 33 via the backstay 29 installed on the outer periphery of the boiler duct shown in FIG. 8, and transmitted to the installation surface 27 (foundation).
Further, since a horizontal force at the time of an earthquake or the like acts on the center of gravity of the boiler duct as a overturning moment, it is pulled out from the upper surface of the support frame 33, received as a compressive force and a shear force, and transmitted to the installation surface 27 (foundation).
【0008】[0008]
【発明が解決しようとする課題】しかしながら、上述し
た構造の支持架構では、支持架構とボイラダクトはそれ
ぞれ独立した二重構造となり、熱膨張を吸収しつつせん
断力を伝達するため、支持点の構造が複雑になるという
問題があった。また、地震力に対抗するための強度を確
保するにも複雑な構造となっていた。さらに、摺動面で
の摩擦係数が増大する等があり、信頼性に難があった。However, in the support frame having the above-described structure, the support frame and the boiler duct each have an independent double structure, and transmit shear force while absorbing thermal expansion. There was a problem that it became complicated. In addition, the structure was complicated to ensure the strength to resist seismic force. Further, the friction coefficient on the sliding surface is increased, and the reliability is difficult.
【0009】そこで、本発明は、上述した問題点を解決
するためになされたもので、温度変化に起因して被支持
物の底部の大きさが変化した場合でも熱伸びを吸収しつ
つ、強度の確保が容易におこなえ、しかも信頼性の高い
支持架構を提供する。Accordingly, the present invention has been made to solve the above-mentioned problems, and has been made to absorb the thermal elongation even when the size of the bottom portion of the supported object changes due to a temperature change, while maintaining the strength. And provide a highly reliable support frame.
【0010】[0010]
【課題を解決するための手段】本発明に係る支持架構
は、水平方向の据付け面上に配置され、上面側に被支持
物を設置してこれを支持する支持架構において、該被支
持物の底部鉛直面内に複数の支持部材を立脚させ、該被
支持物と該支持部材とを接合して一体構造にすると共
に、前記被支持物底部の中央部付近を固定支持点とし、
該固定支持点の周囲に前記被支持物底部が熱膨張により
水平方向に変位したときこの変位に追従して弾性変形す
る可動支持部を形成し、鉛直ブレースを可動支持部から
固定支持点に向けて設置したトラス構造である。A support frame according to the present invention is arranged on a horizontal installation surface, and is provided with a support on the upper surface side to support the support. A plurality of supporting members are erected in the bottom vertical plane, and the supported object and the supporting member are joined to form an integral structure, and a fixed support point near the center of the supported object bottom,
A movable support portion is formed around the fixed support point and elastically deforms following the displacement when the bottom of the supported object is displaced in the horizontal direction due to thermal expansion, and the vertical brace is directed from the movable support portion to the fixed support point. It is a truss structure installed.
【0011】本発明に係る支持架構によれば、被支持物
と支持部材を溶接して一体構造として、支持架構構造の
簡略化を図ることができ、また、熱膨張を拘束しない鉛
直ブレース材を配置して生じる熱膨張差を吸収させる。[0011] According to the support frame of the present invention, the object to be supported and the support member are welded into an integral structure to simplify the support frame structure, and a vertical brace material that does not restrain thermal expansion is used. The difference in thermal expansion caused by the arrangement is absorbed.
【0012】[0012]
【発明の実施の形態】以下、添付の図面を参照して、本
発明の第1〜第5の実施の形態について説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, first to fifth embodiments of the present invention will be described with reference to the attached drawings.
【0013】図1は第1の実施の形態を示す排熱回収ボ
イラの支持機構の概略側面図、図2は図1に示した排熱
回収ボイラの支持機構の概略斜視図、図3は図1に示し
た支持架構の平面図である。FIG. 1 is a schematic side view of a support mechanism of an exhaust heat recovery boiler showing a first embodiment, FIG. 2 is a schematic perspective view of a support mechanism of the exhaust heat recovery boiler shown in FIG. 1, and FIG. FIG. 2 is a plan view of the support frame shown in FIG.
【0014】本実施の形態において以下に示す実施例で
は、据付け面上に設置する被支持物として、ボイラダク
トを例にして説明する。被支持物としてのボイラダクト
1は、前述した排熱回収形コンバインドサイクル発電プ
ラントにおける熱交換器のボイラダクトであり、このボ
イラダクト1は、前述の如くガスタービンから排気され
る高温高圧ガスを導くために熱膨張によって底板の大き
さが変化する。In the embodiment described below, a boiler duct will be described as an example of a supported object installed on a mounting surface. The boiler duct 1 as a supported object is a boiler duct of a heat exchanger in the exhaust heat recovery type combined cycle power plant described above. The boiler duct 1 is used to guide high-temperature and high-pressure gas exhausted from the gas turbine as described above. The size of the bottom plate changes due to the expansion.
【0015】ボイラダクト1は、複数の支持部材を鉛直
内に立脚させた支持架構33によって支持されている。
この支持架構33は、図1〜3に示すように、ボイラダ
クト幅方向において鉛直面内に、複数の支持部材、例え
ば各3本の支柱2、2、2を立脚し、合計9本の支柱2
と、各支柱2間に配置される10本の鉛直ブレース4と
から構成されるトラス構造で、各支柱2の1箇所を固定
支持部9及び8箇所を可動支持部5〜8、10〜13と
したものである。すなわち、ボイラダクト1の底部25
の中央部付近を固定支持部9とし、この固定支持部9の
周囲にその他の支持点5〜8、10〜13が鉛直面内に
設置される。この支持点5〜8、10〜13は、ボイラ
ダクト1の底部24、26が、図中破線で示すように、
熱膨張により水平方向に変位したときこの変位に追従し
て弾性変形する可動支持部8、10を形成する。The boiler duct 1 is supported by a support frame 33 having a plurality of support members standing vertically.
As shown in FIGS. 1 to 3, the support frame 33 has a plurality of support members, for example, three columns 2, 2, and 2, respectively, standing in a vertical plane in the boiler duct width direction, and a total of nine columns 2 are provided.
And a truss structure composed of ten vertical braces 4 arranged between the columns 2. One of the columns 2 is fixed to the fixed support portion 9 and eight to the movable support portions 5 to 8, 10 to 13 It is what it was. That is, the bottom 25 of the boiler duct 1
The vicinity of the central portion is a fixed support portion 9, and other support points 5 to 8 and 10 to 13 are set in the vertical plane around the fixed support portion 9. The support points 5 to 8 and 10 to 13 correspond to the bottom portions 24 and 26 of the boiler duct 1 as shown by broken lines in the drawing.
When displaced in the horizontal direction due to thermal expansion, movable support portions (8, 10) are formed which elastically deform following the displacement.
【0016】ボイラダクト1の底部25は中央部付近に
固定支持部9を設定し、両端に配置された支柱2、2、
…すなわち可動支持部6、8、10、12の下端側と、
4本の鉛直ブレース4a、4b、4c、4dで連接支持
されて固定されている。一方、これ以外のボイラダクト
1の8ケ所の底部は片持ち支持された支柱2の先端に、
例えば底部24、26と固着される固定ヒンジ8a、1
0aを固着してなる可動支持部8、10の支持端によっ
て支持されている。図中、4eは可動支持部6、5を連
接支持する鉛直ブレース、4fは可動支持部5、8を連
接支持する鉛直ブレース、4gは可動支持部8、11を
連接支持する鉛直ブレース、4hは可動支持部11、1
2を連接支持する鉛直ブレース、4iは可動支持部1
2、13を連接支持する鉛直ブレース、4jは可動支持
部13、10を連接支持する鉛直ブレース、4kは可動
支持部10、7を連接支持する鉛直ブレース、4mは可
動支持部7、6を連接支持する鉛直ブレースである。図
3で示す4h、4i、4b、4d、4e、4mは排ガス
方向に連接支持する鉛直ブレースで、熱変形を拘束しな
い。、なお、支柱2は座屈を起こさないようにあらかじ
め重量を考慮し、かつ、底部の熱膨張に対しても弾性変
形内に収まるように設計されている。The bottom 25 of the boiler duct 1 has a fixed support 9 near the center, and supports 2, 2,.
... that is, the lower end sides of the movable support portions 6, 8, 10, and 12,
It is connected and supported by four vertical braces 4a, 4b, 4c, 4d and fixed. On the other hand, the other eight bottoms of the boiler duct 1 are attached to the tip of the cantilevered support 2,
For example, fixed hinges 8a, 1 fixed to the bottoms 24, 26
Oa is fixedly supported by the support ends of the movable support portions 8, 10. In the figure, 4e is a vertical brace for connecting and supporting the movable support portions 6, 5; 4f, a vertical brace for connecting and supporting the movable support portions 5, 8; 4g, a vertical brace for connecting and supporting the movable support portions 8, 11; Movable support 11, 1
2 is a vertical brace connecting and supporting 2;
A vertical brace for connecting and supporting 2 and 13, 4 j is a vertical brace for connecting and supporting the movable support portions 13 and 10, 4 k is a vertical brace for connecting and supporting the movable support portions 10 and 7 and 4 m for connecting the movable support portions 7 and 6. Vertical brace to support. 4h, 4i, 4b, 4d, 4e, and 4m shown in FIG. 3 are vertical braces connected and supported in the exhaust gas direction, and do not restrict thermal deformation. The strut 2 is designed in consideration of the weight in advance so as not to cause buckling, and is designed to be within elastic deformation even with respect to thermal expansion of the bottom.
【0017】図3に示すように、支柱2すなわち可動支
持部6、8、10、12の下端からボイラダクト底部2
5の中央部付近ヘ鉛直ブレース4a、4b、4c、4d
を配置することにより、ボイラダクト1の熱膨張起点
(固定支持部9)が形成される。また、鉛直ブレース4
a、4b、4c、4dは水平力に対抗するための部材と
して作用し、水平力を据付面27(基礎)へ伝達する。
熱膨張起点(固定支持点9)を持たない支柱2(本図で
は8本)は、熱膨張の際にはボイラダクト1の熱膨張に
追従し、ボイラダクト幅方向及び長手方向に可動支持部
5´、6´、7´、8´、10´、11´、12´、1
3´が熱伸びして、それぞれに破線で示したように弾性
変形(たわむ)するため、熱膨張を拘束することがな
い。As shown in FIG. 3, the bottom of the boiler duct 2 extends from the lower end of the column 2, that is, the movable support portions 6, 8, 10, and 12.
Vertical brace 4a, 4b, 4c, 4d near the center of 5
Is arranged, a starting point of thermal expansion of the boiler duct 1 (fixed support portion 9) is formed. In addition, vertical brace 4
a, 4b, 4c and 4d act as members for countering the horizontal force and transmit the horizontal force to the mounting surface 27 (foundation).
The pillars 2 (eight in this figure) having no thermal expansion starting point (fixed support point 9) follow the thermal expansion of the boiler duct 1 at the time of thermal expansion, and are movable in the boiler duct width direction and in the longitudinal direction. , 6 ', 7', 8 ', 10', 11 ', 12', 1
3 'thermally expands and elastically deforms (bends) as indicated by broken lines, so that thermal expansion is not restricted.
【0018】このように本発明の支持架構は、支持部材
(支柱2)と被支持物(ボイラダクト1)を接合して一
体化し、十分な剛性を確保しつつ、滑りによる熱膨張の
吸収を無くし単純構造としたため、信頼性の向上を計る
ことができる。また、単純構造としたため、小型軽量化
及び省資源化することができる。As described above, the support frame of the present invention joins and integrates the support member (post 2) and the object to be supported (boiler duct 1), and eliminates the absorption of thermal expansion due to sliding while ensuring sufficient rigidity. Because of the simple structure, reliability can be improved. In addition, since it has a simple structure, it is possible to reduce the size and weight and save resources.
【0019】なお、上記実施例においては、ボイラダク
トの熱交換器として排熱回収ボイラを例にとって説明し
たが、本発明はこれに限らず熱膨張を生じるような大型
機器を支持するような場合に一般的に適用しうるもので
ある。In the above embodiment, an exhaust heat recovery boiler has been described as an example of a heat exchanger of a boiler duct. However, the present invention is not limited to this, and is applicable to a case in which a large device that causes thermal expansion is supported. It is generally applicable.
【0020】次に、図4を参照して本発明の第2の実施
の形態について説明する。Next, a second embodiment of the present invention will be described with reference to FIG.
【0021】第2の実施の形態を示す支持架構33は、
被支持物であるボイラダクト1の底部外側の鉛直面内に
各2本の支持部材である支柱2、2を立脚させ、ボイラ
ダクト1底部と支柱2、2上端面を溶接して一体構造と
し、ボイラダクト底部の中央部を固定支持点30として
支柱2、2の下端側とボイラダクト1の底部中央部を鉛
直ブレース4で連接支持した構造である。A supporting frame 33 according to the second embodiment is
In the vertical plane outside the bottom of the boiler duct 1, which is a supported object, the columns 2, 2, which are two support members, are erected, and the bottom of the boiler duct 1 and the columns 2, 2 are welded together to form an integrated structure. The center of the bottom is a fixed support point 30 and the lower ends of the columns 2 and 2 and the center of the bottom of the boiler duct 1 are connected and supported by a vertical brace 4.
【0022】この支持架構33の基本的な構成は、第1
の実施の形態と同様であるが、鉛直面内に各2本の支柱
2を配置し、固定支持部をバックステイ29下部付近に
持ってない。このため、バックステイ29、29間に渡
した梁28下部付近に固定支持点30を設けるように鉛
直ブレース4を配置したトラス構造である。The basic structure of the support frame 33 is as follows.
This embodiment is the same as the first embodiment, except that two columns 2 are arranged in the vertical plane, and the fixed support is not provided near the lower portion of the back stay 29. Therefore, the truss structure has the vertical braces 4 arranged so that the fixed support points 30 are provided near the lower portions of the beams 28 extending between the back stays 29, 29.
【0023】この実施の形態にあっては、第1の実施の
形態と同様に、ボイラダクト1と支柱2を溶接して一体
構造としているため、十分な剛性を確保しつつ、滑りに
よる熱膨張の吸収を無くし単純構造としたため、信頼性
の向上を計ることができる。また、単純構造としたた
め、小型軽量化及び省資源化することができる。さらに
ボイラダクト1の底部が熱膨張により水平方向に変位し
ても、ボイラダクト底部中央部に固定支持点30で、固
定状態に支えられる一方、その周囲の可動支持部が変位
に追従して弾性変形するため熱膨張差を吸収することが
できる。In this embodiment, as in the first embodiment, the boiler duct 1 and the column 2 are welded to form an integral structure, so that sufficient rigidity is ensured and thermal expansion due to slippage is ensured. Since the absorption is eliminated and the structure is simplified, the reliability can be improved. In addition, since it has a simple structure, it is possible to reduce the size and weight and save resources. Further, even if the bottom of the boiler duct 1 is displaced in the horizontal direction due to thermal expansion, the boiler duct 1 is supported in a fixed state at a fixed support point 30 at the center of the bottom of the boiler duct, while the movable support around it elastically deforms following the displacement. Therefore, the difference in thermal expansion can be absorbed.
【0024】図5を参照して本発明の第3の実施の形態
について参照して説明する。The third embodiment of the present invention will be described with reference to FIG.
【0025】第3の実施の形態を示す支持架構33は、
鉛直面内に各4本の支柱2、2、2、2を立設し、バッ
クステイ29間に渡した梁28下部付近に固定支持部3
0を持つように鉛直ブレース4、4を配置したトラス構
造である。そして、ボイラダクト1と支柱2を溶接して
一体構造としているため、第2の実施の形態と同様の効
果が期待できる。The support frame 33 according to the third embodiment is
Four columns 2, 2, 2, 2 are erected in the vertical plane, and the fixed support 3
This is a truss structure in which the vertical braces 4, 4 are arranged so as to have zero. And since the boiler duct 1 and the support | pillar 2 are welded and it has an integral structure, the same effect as 2nd Embodiment can be expected.
【0026】図6を参照して本発明の第4の実施の形態
について説明する。A fourth embodiment of the present invention will be described with reference to FIG.
【0027】第4の実施の形態を示す支持架構33は、
鉛直面内に各5本の支柱2、2、2、2、2を立設さ
せ、ボイラダクト1底部と各支柱2、2、2、2、2上
端面を溶接して一体構造とし、ボイラダクト1底部の中
央部を固定支持点Aとしてボイラダクト1上端側とその
両側に配置された各支柱2、2下端側を鉛直ブレース4
で連接支持したトラス構造である。この実施例の支持架
構33も、ボイラダクト1と支柱2を溶接して一体構造
としているため、第1の実施例と同様の効果が期待でき
る。The support frame 33 according to the fourth embodiment is
Five pillars 2, 2, 2, 2, and 2 are erected in the vertical plane, and the bottom of the boiler duct 1 and the upper ends of the pillars 2, 2, 2, 2, and 2 are welded to form an integrated structure. The center of the bottom is a fixed support point A, and the upper end of the boiler duct 1 and the columns 2 and 2 disposed on both sides thereof are vertically brace 4.
It is a truss structure that is connected and supported. The support frame 33 of this embodiment also has the same effect as that of the first embodiment because the boiler duct 1 and the column 2 are welded to form an integral structure.
【0028】図7を参照して本発明の第5の実施の形態
について説明する。A fifth embodiment of the present invention will be described with reference to FIG.
【0029】この実施の形態を示す支持架構33は、ボ
イラダクト幅方向において鉛直面内に各4本の支柱2、
2、2、2を立脚し、ボイラダクト1底部中央部付近に
固定支持点31を設け、その側柱2a、2b間に鉛直ブ
レース4を設置するトラス構造である。このため、図1
〜6に示した1モジュール2、3、4、5バックステイ
各々の場合において、ボイラ幅方向に4本の柱を有して
も、第1の実施の形態と同様の効果を得ることができ
る。The support frame 33 according to the present embodiment has four columns 2, 4 in a vertical plane in the width direction of the boiler duct.
The truss structure is such that two, two, and two are erected, a fixed support point 31 is provided near the center of the bottom of the boiler duct 1, and a vertical brace 4 is installed between the side columns 2a, 2b. Therefore, FIG.
In each of the modules 1, 3, 4, and 5 backstays shown in Nos. 6 to 6, even if there are four pillars in the boiler width direction, the same effect as in the first embodiment can be obtained. .
【0030】[0030]
【発明の効果】以上述べたように本発明の支持架構によ
れば、被支持物底部の中央付近を熱膨張起点(固定支持
点)にするよう鉛直ブレースを配置したので、被支持物
の底部が熱膨張により水平方向に変位しても、被支持物
中央付近にて固定状態に支えられる一方、その周囲の可
動支持部が上記変位に追従して弾性変形するため、熱膨
張に拘束されない。As described above, according to the support frame of the present invention, the vertical braces are arranged so that the vicinity of the center of the bottom of the supported object is set as the starting point of thermal expansion (fixed support point). Even if is displaced in the horizontal direction due to thermal expansion, it is supported in a fixed state near the center of the supported object, but the movable support around it elastically deforms following the above displacement, so that it is not restricted by thermal expansion.
【0031】また、支持部材と被支持物を一体溶接構造
とし、十分な剛性を確保しつつ、滑りによる熱膨張の吸
収を無くし単純構造としたため、信頼性の向上を計るこ
とができ、従来必要であった一部の梁を設置する必要が
ない。Further, since the support member and the object to be supported are integrally welded to ensure a sufficient rigidity and eliminate the absorption of thermal expansion due to slip, the structure is simple, so that the reliability can be improved. There is no need to install some beams.
【0032】さらに、上記のように単純構造としたた
め、小型軽量化及び省資源化を図ることができる。Further, the simple structure as described above allows a reduction in size and weight and a saving of resources.
【図1】第1の実施の形態を示す排熱回収ボイラの支持
機構の概略側面図。FIG. 1 is a schematic side view of a support mechanism of an exhaust heat recovery boiler according to a first embodiment.
【図2】図1に示した排熱回収ボイラの支持機構の概略
斜視図。FIG. 2 is a schematic perspective view of a support mechanism of the exhaust heat recovery boiler shown in FIG.
【図3】図1に示した排熱回収ボイラの支持架構の平面
図。FIG. 3 is a plan view of a support frame of the exhaust heat recovery boiler shown in FIG.
【図4】第2の実施の形態を示す排熱回収ボイラの支持
架構の概略側面図。FIG. 4 is a schematic side view of a support frame of an exhaust heat recovery boiler according to a second embodiment.
【図5】第3の実施の形態を示す排熱回収ボイラの支持
架構の概略側面図。FIG. 5 is a schematic side view of a support frame of an exhaust heat recovery boiler according to a third embodiment.
【図6】第4の実施の形態を示す排熱回収ボイラの支持
架構の概略側面図。FIG. 6 is a schematic side view of a support frame of an exhaust heat recovery boiler according to a fourth embodiment.
【図7】第5の実施の形態を示す排熱回収ボイラの支持
架構をボイラ幅方向の断面から示した縦断面図。FIG. 7 is a longitudinal sectional view showing a support frame of an exhaust heat recovery boiler according to a fifth embodiment, viewed from a section in a boiler width direction.
【図8】排熱回収ボイラの従来例を示す側面図。FIG. 8 is a side view showing a conventional example of an exhaust heat recovery boiler.
【図9】排熱回収ボイラの支持架構の従来例を示す側面
図。FIG. 9 is a side view showing a conventional example of a support frame for an exhaust heat recovery boiler.
【図10】図9に示した排熱回収ボイラの支持架構を上
面から示した図。10 is a diagram showing a support frame of the exhaust heat recovery boiler shown in FIG. 9 as viewed from above.
1………ボイラダクト 2………支柱 4………鉛直ブレース 5〜8、10〜13…可動支持部 9………固定支持部 25………ボイラダクト底部 33………支持架構 DESCRIPTION OF SYMBOLS 1 ... Boiler duct 2 ... Support 4 ... Vertical brace 5-8, 10-13 Movable support 9 ... Fixed support 25 ... Boiler duct bottom 33 ... Support frame
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長嶋 孝幸 神奈川県横浜市鶴見区末広町2丁目4番地 株式会社東芝京浜事業所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takayuki Nagashima 2-4 Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Toshiba Keihin Works Co., Ltd.
Claims (5)
に被支持物を設置してこれを支持する支持架構におい
て、 該被支持物の底部鉛直面内に複数の支持部材を立脚さ
せ、該被支持物と該支持部材とを接合して一体構造にす
ると共に、前記被支持物底部の中央部付近を固定支持点
とし、該固定支持点の周囲に前記被支持物底部が熱膨張
により水平方向に変位したときこの変位に追従して弾性
変形する可動支持部を形成し、鉛直ブレースを該可動支
持部から前記固定支持点に向けて設置したトラス構造と
したことを特徴とする支持架構。1. A supporting frame which is disposed on a horizontal installation surface, supports an object to be supported on an upper surface thereof, and supports a plurality of supporting members on a bottom vertical surface of the object. The supported object and the support member are joined to form an integral structure, and a portion near the center of the bottom of the supported object is used as a fixed support point, and the bottom of the supported object is thermally expanded around the fixed support point. A truss structure in which, when displaced in the horizontal direction, a movable support portion that elastically deforms following the displacement is formed, and a vertical brace is provided from the movable support portion toward the fixed support point. Frame.
物底部の鉛直面内に各3本の支持部材を立脚させ、前記
被支持物底部と前記支持部材上端面を溶接して一体構造
とし、両端に配置された前記可動支持部材下端側と前記
固定支持部材上端側を鉛直ブレースで連接支持したトラ
ス構造としたことを特徴とする支持架構。2. The supporting frame according to claim 1, wherein three support members are respectively erected on a vertical plane of the bottom of the supported object, and the bottom of the supported object and an upper end surface of the support member are welded to form an integral structure. And a truss structure in which a lower end of the movable support member and an upper end of the fixed support member arranged at both ends are connected and supported by a vertical brace.
物底部外側の鉛直面内に各2本の支持部材を立脚させ、
前記被支持物底部と前記支持部材上端面を溶接して一体
構造とし、前記被支持物底部の中央部を固定支持点とし
て前記各支持部材下端側と該被支持物底部中央部を鉛直
ブレースで連接支持したトラス構造としたことを特徴と
する支持架構。3. The support frame according to claim 1, wherein each of the two support members is erected in a vertical plane outside the bottom of the supported object,
The bottom of the supported object and the upper end surface of the support member are welded into an integral structure, and the center of the bottom of the supported object is a fixed support point, and the lower ends of the support members and the center of the bottom of the supported object are vertically braceed. A support frame characterized by a truss structure that is connected and supported.
物底部の鉛直面内に各4本の支持部材を立脚させ、前記
被支持物底部と前記支持部材上端面を溶接して一体構造
とし、前記被支持物底部の中央部を固定支持点として中
央側2本の前記支持部材下端側と該被支持物中央部を鉛
直ブレースで連接支持したトラス構造としたことを特徴
とする支持架構。4. The support frame according to claim 1, wherein four support members are respectively erected on a vertical plane of the bottom of the supported object, and the bottom of the supported object and an upper end face of the support member are welded to form an integral structure. A support truss structure in which the lower end of the two support members at the center and the center of the supported object are connected and supported by a vertical brace with the center of the bottom of the supported object being a fixed support point. .
物底部の鉛直面内に各5本の支持部材を立脚させ、前記
被支持物底部と前記支持部材上端面を溶接して一体構造
とし、前記被支持物底部の中央部を固定支持点として前
記固定支持部材上端側とその両側に配置された各可動支
持部材下端側を鉛直ブレースで連接支持したトラス構造
としたことを特徴とする支持架構。5. The support frame according to claim 1, wherein five support members are respectively erected on a vertical plane of the bottom of the supported object, and the bottom of the supported object and an upper end surface of the support member are welded to form an integral structure. A truss structure in which the center of the bottom of the supported object is a fixed support point, and the upper end of the fixed support member and the lower ends of the movable support members disposed on both sides thereof are connected and supported by vertical braces. Support frame.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4391198A JPH11241804A (en) | 1998-02-25 | 1998-02-25 | Supporting structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4391198A JPH11241804A (en) | 1998-02-25 | 1998-02-25 | Supporting structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11241804A true JPH11241804A (en) | 1999-09-07 |
Family
ID=12676910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4391198A Withdrawn JPH11241804A (en) | 1998-02-25 | 1998-02-25 | Supporting structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11241804A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008025930A (en) * | 2006-07-21 | 2008-02-07 | Nippon Steel Engineering Co Ltd | Waste gasification melting facility |
JP2014126330A (en) * | 2012-12-27 | 2014-07-07 | Kawasaki Heavy Ind Ltd | Exhaust heat boiler, heat exchanger, dust removal device provided in heat exchanger, and heat exchanger manufacturing method |
CN104266166A (en) * | 2014-09-25 | 2015-01-07 | 上海锅炉厂有限公司 | Boiler bottom supporting structure |
JP2017519929A (en) * | 2014-03-26 | 2017-07-20 | エクソンモービル アップストリーム リサーチ カンパニー | System and method for adjustment of recirculated exhaust gas |
JP2020012186A (en) * | 2018-07-20 | 2020-01-23 | 株式会社東芝 | Apparatus and system for producing hydrogen |
-
1998
- 1998-02-25 JP JP4391198A patent/JPH11241804A/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008025930A (en) * | 2006-07-21 | 2008-02-07 | Nippon Steel Engineering Co Ltd | Waste gasification melting facility |
JP2014126330A (en) * | 2012-12-27 | 2014-07-07 | Kawasaki Heavy Ind Ltd | Exhaust heat boiler, heat exchanger, dust removal device provided in heat exchanger, and heat exchanger manufacturing method |
JP2017519929A (en) * | 2014-03-26 | 2017-07-20 | エクソンモービル アップストリーム リサーチ カンパニー | System and method for adjustment of recirculated exhaust gas |
CN104266166A (en) * | 2014-09-25 | 2015-01-07 | 上海锅炉厂有限公司 | Boiler bottom supporting structure |
CN104266166B (en) * | 2014-09-25 | 2016-04-06 | 上海锅炉厂有限公司 | Boiler bottom supporting construction |
JP2020012186A (en) * | 2018-07-20 | 2020-01-23 | 株式会社東芝 | Apparatus and system for producing hydrogen |
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