JPH085001A - Supporting device for group of heat transfer tubes - Google Patents
Supporting device for group of heat transfer tubesInfo
- Publication number
- JPH085001A JPH085001A JP14154094A JP14154094A JPH085001A JP H085001 A JPH085001 A JP H085001A JP 14154094 A JP14154094 A JP 14154094A JP 14154094 A JP14154094 A JP 14154094A JP H085001 A JPH085001 A JP H085001A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- transfer tube
- pipe
- duct
- header
- 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.)
- Granted
Links
- 230000008602 contraction Effects 0.000 claims abstract description 19
- 239000011810 insulating material Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 64
- 238000011084 recovery Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 238000010248 power generation Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は排熱回収ボイラ等におけ
る伝熱管群の支持装置に係り、特に地震等の外力による
振動時の水平方向に作用する力を吸収するのに好適な構
造の伝熱管群支持装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support device for a heat transfer tube group in an exhaust heat recovery boiler or the like, and particularly to a transfer device having a structure suitable for absorbing a force acting in a horizontal direction at the time of vibration due to an external force such as an earthquake. The present invention relates to a heat tube group support device.
【０００２】[0002]
【従来の技術】高効率発電の複合発電プラントは、先
ず、ガスタービンにより発電を行うと共に、ガスタービ
ンから排出された排ガス中の熱を排熱回収ボイラにおい
て回収し、かつ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、発電効率の面に加えて、ガスタービ
ンの特性である負荷応答性が高く、急激な電力需要の増
加においても十分に対応し得るという利点がある。図５
に、タービン排ガスの熱を回収する従来の排熱回収ボイ
ラの構造を示す。図において、ガスタービンの排ガスＧ
は、過熱器１、高圧蒸発器２を経て、脱硝装置３に至
り、排ガス中の窒素酸化物（ＮＯｘ）を除去する。続い
て、排ガスは高圧蒸発器４、高圧節炭器７、低圧蒸発器
８、低圧節炭器１１を経て系外に排出される。この間に
発生した高圧主蒸気Ｓ1および低圧主蒸気Ｓ2は、図示し
ていないが蒸気タービンの動力源、所内熱源として利用
される。なお、高圧ドラム５、低圧ドラム９、高圧降水
管６、低圧降水管１０等が配設されている。そして、排
熱回収ボイラの機器は、高圧ドラム５、低圧ドラム９を
除き、ガスタービンの排ガスＧを通過させるガス流路、
いわゆる高温ダクト内に配設されている。図６は、図５
のＡ−Ａ断面拡大図である。これは、排熱回収ボイラの
高温ダクト本体を構成するケーシング１２であり、ケー
シング１２の内側には保温材１３を内張りしている。こ
のダクト本体に、炉内圧が作用しケーシング１２が大き
く変形しないようにするために、ケーシング１２の周囲
は支持部材１４によって補強されている。このダクト本
体には、上部管寄せ１５、下部管寄せ１７、伝熱管１６
により構成された伝熱管群が内蔵されている。この伝熱
管群は、下部管寄せ１７に取付けられた、管寄せ支持サ
ポート１８ａ〜１８ｅによって自立しており、伝熱管群
の自重は、管寄せ支持部材１９に伝達される。高温ガス
に直接触れて温度が高くなる上部、下部管寄せ１５、１
７、伝熱管１６は自在に熱膨張するのに対し、保温材１
３で内張りされているケーシング１２や、支持部材１４
は大気に触れほとんど常温となっている。したがって、
伝熱管群は、排ガスＧの流れに対し直角方向にはＣ点を
基準に左右に伸縮し、鉛直方向にはＦ点を基準に上方へ
伸縮することができる構造となっている。図７は、図６
のＥ部拡大図である。排ガスの流れ方向の水平力は、ケ
ーシング１２の側面に設けられている水平力支持部材２
０に取付けられたボックス３０に、上部管寄せ１５の端
部に取付けられたラグ２９を差し込み、ラグ２９が、ボ
ックス３０のガス流れ方向の前流側と後流側の面に、交
互に衝突を繰り返すことにより、上記水平力は水平力支
持部材２０に伝達され支持される構造となっている。し
かしながら、高効率の複合発電プラントは、電力供給の
調整用に使用されることが多いため、ダクト内を通過す
る排ガス温度は常に一定ではない。このため、鉛直方向
に伝熱管群が膨張する上部管寄せ１５の排ガス流れ方向
の水平力を支持する水平力支持部材２０において、鉛直
方向の伸縮量を吸収させると同時に、排ガスの流れに対
する直角方向の伸縮量も同時に吸収させることになるた
め、プラントの起動、停止時等の排ガス温度の変化が大
きい時には、水平力支持部材２０の内面に設けられてい
る保温材１３は、圧縮と膨張を繰り返すことになり、水
平力支持部材２０の上部管寄せ１５の端部のラグ２９
と、ダクトのケーシング側面の水平力支持部材２０に取
付けられたボックス３０との間に隙間ができ、高温の排
ガスが隙間部に侵入して局部的にケーシング１２の表面
温度が高くなり、プラントの熱効率が低下するという問
題があった。また、個々の上部管寄せ１５に排ガス流れ
方向の水平力支持部材２０を設けるため、ダクトのケー
シング１２に取合い点が多く必要となり、伝熱管群の支
持構造が複雑となる問題があり、さらに、高い発電効率
とするためプラントの大容量化がはかられ、排熱回収ボ
イラも大型化する必要が生じるが、そのため伝熱管群の
配置を排ガス流れの直角方向において２分割ないし３分
割配置とする場合に、上記した従来の伝熱管群の支持構
造では上記取合い点が多くなり、従来の支持構造を適用
することは極めて難しいという問題があった。2. Description of the Related Art A combined cycle power plant for high-efficiency power generation first generates power by a gas turbine, collects heat in exhaust gas discharged from the gas turbine in an exhaust heat recovery boiler, and generates the heat in the exhaust heat recovery boiler. The generated steam drives a steam turbine to generate electricity. In addition to the power generation efficiency, this combined cycle power generation plant has an advantage that it has a high load responsiveness that is a characteristic of a gas turbine and can sufficiently cope with a sudden increase in power demand. Figure 5
Figure 1 shows the structure of a conventional exhaust heat recovery boiler that recovers the heat of turbine exhaust gas. In the figure, the exhaust gas G of the gas turbine
Passes through the superheater 1 and the high-pressure evaporator 2 and reaches the denitration device 3 to remove nitrogen oxides (NOx) in the exhaust gas. Subsequently, the exhaust gas is discharged to the outside of the system through the high pressure evaporator 4, the high pressure economizer 7, the low pressure evaporator 8 and the low pressure economizer 11. Although not shown, the high-pressure main steam S 1 and the low-pressure main steam S 2 generated during this period are used as a power source for the steam turbine and a heat source in the plant. A high-pressure drum 5, a low-pressure drum 9, a high-pressure downfall pipe 6, a low-pressure downfall pipe 10 and the like are provided. The equipment of the exhaust heat recovery boiler has a gas flow path for passing the exhaust gas G of the gas turbine, except for the high-pressure drum 5 and the low-pressure drum 9.
It is arranged in a so-called high temperature duct. 6 is shown in FIG.
It is an AA cross-section enlarged view of. This is a casing 12 that constitutes the high temperature duct body of the exhaust heat recovery boiler, and a heat insulating material 13 is lined inside the casing 12. The periphery of the casing 12 is reinforced by a support member 14 in order to prevent the casing 12 from being largely deformed by the pressure in the furnace acting on the duct body. The upper duct 15, the lower duct 17, the heat transfer pipe 16 are provided in the duct body.
The heat transfer tube group configured by is built in. The heat transfer tube group is self-supporting by the tube transfer support supports 18 a to 18 e attached to the lower tube assembly 17, and the weight of the heat transfer tube group is transmitted to the tube assembly support member 19. Upper and lower heads 15 and 1 where the temperature rises by direct contact with hot gas
7. Heat transfer tube 16 freely expands while heat insulation material 1
The casing 12 lined with 3 and the support member 14
Is exposed to the atmosphere and is almost at room temperature. Therefore,
The heat transfer tube group has a structure capable of expanding and contracting to the left and right with respect to the point C in the direction perpendicular to the flow of the exhaust gas G, and expanding and contracting upward with respect to the point F in the vertical direction. FIG. 7 shows FIG.
It is an enlarged view of part E of FIG. The horizontal force in the flow direction of the exhaust gas is the horizontal force support member 2 provided on the side surface of the casing 12.
The lug 29 attached to the end of the upper header 15 is inserted into the box 30 attached to 0, and the lug 29 alternately collides with the front-side surface and the back-side surface of the box 30 in the gas flow direction. By repeating the above, the horizontal force is transmitted to and supported by the horizontal force support member 20. However, since the highly efficient combined cycle power plant is often used for adjusting the power supply, the temperature of the exhaust gas passing through the duct is not always constant. Therefore, in the horizontal force support member 20 that supports the horizontal force in the exhaust gas flow direction of the upper header 15 in which the heat transfer tube group expands in the vertical direction, the vertical expansion / contraction amount is absorbed, and at the same time, the direction perpendicular to the exhaust gas flow. Since the amount of expansion and contraction of the horizontal force is absorbed at the same time, when the temperature of the exhaust gas changes greatly at the time of starting and stopping the plant, the heat insulating material 13 provided on the inner surface of the horizontal force supporting member 20 repeats compression and expansion. Therefore, the lug 29 at the end of the upper header 15 of the horizontal force support member 20.
And a box 30 attached to the horizontal force supporting member 20 on the side surface of the casing of the duct, a high-temperature exhaust gas enters the gap and the surface temperature of the casing 12 locally rises. There was a problem that the thermal efficiency was lowered. Further, since the horizontal force support member 20 in the exhaust gas flow direction is provided on each upper pipe header 15, a large number of connection points are required for the casing 12 of the duct, and there is a problem that the support structure of the heat transfer tube group becomes complicated. In order to achieve high power generation efficiency, the capacity of the plant must be increased and the exhaust heat recovery boiler must also be enlarged. Therefore, the heat transfer tube group should be arranged in two or three divisions in the direction perpendicular to the exhaust gas flow. In this case, the above-mentioned conventional support structure for a heat transfer tube group has a large number of points, and there is a problem that it is extremely difficult to apply the conventional support structure.
【０００３】[0003]
【発明が解決しようとする課題】上述したごとく、従来
の排ガスダクトのケーシングの側面に設ける伝熱管群の
支持構造は、排熱回収ボイラの大容量化により、伝熱管
パネルを排ガス流の直角方向に２分割ないしは３分割し
て配置する必要が生じ、従来のダクトの側面に設けた水
平力支持部材では排ガスの流れ方向の水平力を支持する
ことができず、また、伝熱管群の各管寄せごとに、ダク
トのケーシング側から支持する構造としているため、ケ
ーシング側に取合り点を多く設ける必要があり、この場
合、ケーシング取合り点の内面保温構造は、管寄せの鉛
直方向および排ガス流の直角方向の熱移動量を吸収する
構造であるため、必要とする保温材を十分に充填するこ
とができず、管寄せ側の熱膨張等の移動によって隙間が
生じ、保温材の内部へ高温の排ガスが侵入し局部的にケ
ーシングの表面温度が上昇し、ケーシング内面の保温効
果を損ない熱効率が低下するという問題があった。As described above, in the conventional support structure for the heat transfer tube group provided on the side surface of the casing of the exhaust gas duct, the heat transfer tube panel is installed in the direction perpendicular to the exhaust gas flow due to the large capacity of the exhaust heat recovery boiler. Therefore, the horizontal force supporting member provided on the side surface of the conventional duct cannot support the horizontal force in the flow direction of the exhaust gas, and each tube of the heat transfer tube group is not supported. Since each duct is supported from the casing side of the duct, it is necessary to provide a large number of attachment points on the casing side.In this case, the inner surface heat retaining structure at the casing attachment point is Since it has a structure that absorbs the amount of heat transfer in the direction perpendicular to the exhaust gas flow, it cannot be filled with the necessary heat insulating material sufficiently, and a gap is created due to the movement such as thermal expansion on the pipe-heading side. The surface temperature of the casing increases high-temperature exhaust gas can penetrate locally, thermal efficiency impair the insulating effect of the inner surface of the casing is lowered.
【０００４】本発明の目的は、上記従来技術における問
題点を解消し、排熱回収ボイラが大型になっても複数の
伝熱管パネル（伝熱管群）を排ガス流に対し直角方向に
２分割ないしは３分割して配設することができ、かつ排
ガスダクトのケーシングの表面からの熱損失が少なく、
特に各伝熱管群の鉛直方向の伸縮量を吸収することがで
き、地震等の外力による振動時に発生する水平力を吸収
するのに好適な構造の排熱回収ボイラ等の伝熱管群支持
装置を提供することにある。The object of the present invention is to solve the above-mentioned problems in the prior art and to divide a plurality of heat transfer tube panels (heat transfer tube groups) into two at right angles to the exhaust gas flow even if the exhaust heat recovery boiler becomes large in size. It can be divided into three parts, and the heat loss from the surface of the casing of the exhaust gas duct is small,
In particular, a heat transfer tube group supporting device such as an exhaust heat recovery boiler that can absorb the amount of expansion and contraction of each heat transfer tube group in the vertical direction and is suitable for absorbing the horizontal force generated during vibration due to an external force such as an earthquake is installed. To provide.
【０００５】[0005]
【課題を解決するための手段】上記本発明の目的を達成
するために、本発明の廃熱回収ボイラ等における伝熱管
群（伝熱管パネル）の支持装置は、特許請求の範囲に記
載のように構成するものである。すなわち、請求項１に
記載のように、排ガスが流れるダクトまたは煙道内に、
上下に管寄せ部を有する伝熱管群を鉛直方向に配設した
伝熱管群支持装置において、伝熱管の鉛直方向の伸び基
準点が下部にあって、上記伝熱管群の下部管寄せ部を上
記ダクト内の底部に設けられた支持台上に固定し、上部
管寄せ部をダクトの上部ケーシングに設けた支持部で保
持する自立型の伝熱管群を複数個配設し、該伝熱管群の
上部管寄せ部にはラグを設け、上記複数個の伝熱管群の
上部管寄せ部を一体に支持する構造の管寄せ一体支持部
材に、上記管寄せ部のラグを、各伝熱管群の鉛直方向に
おける相対的な伸び差を吸収し、かつ排ガスの流れ方向
の水平力を支持する構造に取付け、さらに上記管寄せ一
体支持部材にブラケットを接合して、上記ダクトの上部
ケーシングに設けた支持部材にポストを固定し、上記ブ
ラケットと上記ポストを、上記管寄せ部の鉛直方向の伸
縮量を吸収し得るように係合支持する構造とするもので
ある。また、請求項２に記載のように、排ガスが流れる
ダクトまたは煙道内に、上下に管寄せ部を有する伝熱管
群を鉛直方向に配設した伝熱管群支持装置において、伝
熱管の鉛直方向の伸び基準点が上部にあって、上記伝熱
管群の上部管寄せ部を、上記ダクトの上部ケーシングに
設けた支持部から吊り部材により懸垂支持する吊り下げ
型の伝熱管群を複数個配設し、該伝熱管群の下部管寄せ
部にはラグを設け、上記複数個の伝熱管群の下部管寄せ
部を一体に支持する構造とした管寄せ一体支持部材に、
上記管寄せ部のラグを、各伝熱管群の鉛直方向における
相対的な伸び差を吸収し、かつ排ガスの流れ方向の水平
力を支持する構造に取付け、さらに上記管寄せ一体支持
部材にブラケットを接合し、上記ダクトの底部ケーシン
グに設けた支持部材にポストを固定し、上記ブラケット
と上記ポストを、上記管寄せ部の鉛直方向の伸縮量を吸
収し得るように係合支持する構造とするものである。上
記請求項１または請求項２に記載の伝熱管群支持装置お
いて、請求項３にきさいのように、管寄せ部のラグを、
各伝熱管群の鉛直方向における相対的な伸び差を吸収
し、かつ排ガスの流れ方向の水平力を支持する構造は、
上部または下部管寄せ部に接合したラグと、管寄せ一体
支持部材をピンによって連結し、上記ラグのピン穴の形
状を、排ガス流れの前部および後部に位置する管寄せ部
のラグに設けるピン穴は丸穴とし、その中間部に位置す
る管寄せ部のラグに設けるピン穴は、鉛直方向に長い楕
円形状の穴もしくは長穴とし、各管寄せ部の鉛直方向に
おける相対的な伸び差を吸収し得る構造とすることが好
ましい。また、上記の請求項１または請求項２におい
て、請求項４に記載のように、ダクトの上部ケーシング
に設けた支持部材に固定するポスト、もしくはダクトの
底部ケーシングに設けた支持部材に固定するポストは、
ダクトのケーシングの内面に設けられている保温材を通
過してダクト内に配設され、該ポストと、管寄せ一体支
持部材に接合されたブラケットにより挾み込むようにし
て鉛直方向に摺動可能に取付け、上記管寄せ部の鉛直方
向の伸縮量を吸収し得るように係合支持する構造とする
ものである。In order to achieve the above object of the present invention, a support device for a heat transfer tube group (heat transfer tube panel) in a waste heat recovery boiler or the like of the present invention is as set forth in the claims. It is composed of. That is, as described in claim 1, in a duct or a flue through which exhaust gas flows,
In a heat transfer tube group support device in which a heat transfer tube group having vertically arranged heat transfer tube groups is arranged in a vertical direction, a vertical extension reference point of the heat transfer tube is at a lower portion, and A plurality of self-supporting heat transfer tube groups, which are fixed on a support table provided at the bottom of the duct and hold the upper pipe pulling section by a support section provided in the upper casing of the duct, are provided. A lug is provided on the upper pipe pulling part, and the lug of the pipe pulling part is vertically connected to the pipe pulling integrated support member having a structure for integrally supporting the upper pipe pulling parts of the plurality of heat transfer pipe groups. Supporting member provided in the upper casing of the duct by absorbing a relative expansion difference in the direction and supporting a horizontal force in the flow direction of the exhaust gas, and further joining a bracket to the pipe header integrated supporting member. Secure the post to the above bracket and the above The door, in which the structure for engaging the support so as to absorb the vertical expansion and contraction of the pipe pulling unit. Further, as described in claim 2, in a heat transfer tube group support device in which a heat transfer tube group having vertically adjacent pipe sections is vertically arranged in a duct or a flue passage through which exhaust gas flows, A plurality of suspending heat transfer tube groups are provided which have an extension reference point at the upper part and which suspends and supports an upper pipe pulling portion of the heat transfer tube group from a support portion provided in the upper casing of the duct by a suspending member. A tube guide integrated support member having a structure in which a lug is provided in the lower tube draw part of the heat transfer tube group, and the lower pipe draw parts of the plurality of heat transfer tube groups are integrally supported,
The lug of the header portion is attached to a structure that absorbs a relative expansion difference in the vertical direction of each heat transfer tube group and supports a horizontal force in the flow direction of exhaust gas, and further, a bracket is attached to the integral header member. A structure in which the post is fixed to a supporting member provided on the bottom casing of the duct, and the bracket and the post are engaged and supported so as to absorb the expansion and contraction amount in the vertical direction of the header portion. Is. In the heat transfer tube group support device according to claim 1 or 2, the lugs of the pipe pulling part are provided as in the case of claim 3.
The structure that absorbs the relative expansion difference in the vertical direction of each heat transfer tube group and supports the horizontal force in the exhaust gas flow direction is
A pin that connects the lug joined to the upper or lower header part and the header integrated support member by a pin, and forms the pin holes of the lug on the lugs of the header part located at the front and rear of the exhaust gas flow. The hole shall be a round hole, and the pin hole provided in the lug of the header part located in the middle shall be an elliptical hole or an elongated hole that is long in the vertical direction. A structure capable of absorbing is preferable. Further, in the above-mentioned claim 1 or claim 2, as described in claim 4, a post fixed to a support member provided in an upper casing of the duct or a post fixed to a support member provided in a bottom casing of the duct. Is
It is installed in the duct by passing through the heat insulating material provided on the inner surface of the casing of the duct, and is mounted slidably in the vertical direction by sandwiching it with the post and the bracket joined to the integrated pipe support member. The engaging and supporting structure is configured to absorb the vertical expansion and contraction amount of the pipe pulling portion.
【０００６】[0006]
【作用】本発明の伝熱管群支持装置において、請求項１
に記載のように、排ガスが流れるダクトまたは煙道内
に、上下に管寄せ部を有する伝熱管群を鉛直方向に配設
し、伝熱管の鉛直方向の伸び基準点が下部にあって、上
記伝熱管群の下部管寄せ部を上記ダクト内の底部に設け
られた支持台上に固定し、上部管寄せ部をダクトの上部
ケーシングに設けた支持部で保持する自立型の伝熱管群
を複数個配設した伝熱管群の支持装置において、該伝熱
管群の上部管寄せ部にはラグを接合して設け、上記複数
個の伝熱管群の上部管寄せ部を一体に支持可能な構造の
管寄せ一体支持部材に、上記管寄せ部のラグを、各伝熱
管群の鉛直方向における相対的な伸び差を吸収し、かつ
排ガスの流れ方向の水平力を支持する構造に取付け、さ
らに上記管寄せ一体支持部材にブラケットを接合して、
上記ダクトの上部ケーシングに設けた支持部材にポスト
を固定し、上記ブラケットと上記ポストを、上記管寄せ
部の鉛直方向の伸縮量を吸収し得るように係合支持する
構造とするものである。このように、各伝熱管群の管寄
せ部を、管寄せ一体支持部材によって、排ガスの流れに
対し直角方向に複数の伝熱管群を一括して支持すること
ができるようになり、排熱回収ボイラが大型となっても
伝熱管パネル（伝熱管群）を排ガス流に対し直角方向に
２分割ないしは３分割の配置を行うことができる。ま
た、排ガスのダクトの上部ケーシングの支持部材に設け
るポストの数も少なくなり、ケーシング内面の保温材を
損なうことがなく、したがってダクト表面からの熱損失
も従来にくらべて一段と少なくすることができ、排熱回
収ボイラの熱効率が向上する。さらに、管寄せ一体支持
部材に、管寄せ部のラグを、伝熱管の熱膨張、収縮によ
る寸法変化を吸収し得る構造に取付けるので、複数の伝
熱管群の鉛直方向の相対的な伸び差を吸収することがで
きると同時に、排ガス流れ方向の水平力を支持すること
ができ、地震等の外力による振動時における水平力を吸
収するのに好適な構造の排熱回収ボイラ等の伝熱管群の
支持装置が得られる。また、管寄せ側の鉛直方向の移動
量は、ケーシング側に設けたポストと、管寄せ側のブラ
ケットの係合部（嵌合部または嵌挿部など）で吸収する
ことができ、信頼性の高い伝熱管群支持構造が得られ
る。また、ポスト部のみにケーシング内面の保温層を取
付ければよいことになり、ダクト内面の保温効果を損な
うことがほとんどない。また、請求項２に記載のよう
に、伝熱管の鉛直方向の伸び基準点が上部にあって、上
記伝熱管群の上部管寄せ部を、上記ダクトの上部ケーシ
ングに設けた支持部から吊り部材により懸垂支持する吊
り下げ型の伝熱管群を複数個配設した伝熱管群支持装置
においても、伝熱管群の下部管寄せ部にラグを接合して
設け、上記複数個の伝熱管群の下部管寄せ部を一体に支
持可能な構造とした管寄せ一体支持部材に、上記管寄せ
部のラグを、各伝熱管群の鉛直方向における相対的な伸
び差を吸収し、かつ排ガスの流れ方向の水平力を支持す
る構造に取付け、さらに上記管寄せ一体支持部材にブラ
ケットを接合し、上記ダクトの底部ケーシングに設けた
支持部材にポストを固定し、上記ブラケットと上記ポス
トを、上記管寄せ部の鉛直方向の伸縮量を吸収し得る構
造に係合支持支持する構造とすることにより、上記請求
項１に記載の伝熱管群支持構造と同様の作用ならびに効
果が得られる。なお、上記請求項１または請求項２に記
載の伝熱管群支持装置おいて、請求項３に記載のよう
に、例えば上部または下部管寄せ部に接合したラグと、
管寄せ一体支持部材とをピンによって連結する上記ラグ
のピン穴の形状を、排ガス流れの前部および後部に位置
する管寄せ部のラグに設けるピン穴は丸穴とし、その中
間部、あるいは中央部に位置する管寄せ部のラグに設け
るピン穴は、鉛直方向に長い楕円形状の穴もしくは長穴
とし、各管寄せ部の鉛直方向における相対的な伸び差を
吸収し得る構造とすることが好ましい。このような構造
とすることにより、各伝熱管パネル（伝熱管群）の鉛直
方向の相対的な伸び差を、上記楕円形状の穴もしくは長
穴で吸収し、かつ排ガスの流れ方向の地震等の外力によ
り発生する水平力を支持するのに好適な構造の伝熱管群
支持装置が得られる。また、上記請求項１または請求項
２に記載の伝熱管群支持装置において、請求項４に記載
のように、ダクトの上部ケーシングに設けた支持部材に
固定するポスト、もしくはダクトの底部ケーシングに設
けた支持部材に固定するポストは、ダクトのケーシング
の内面に設けられている保温材の充填層を通過してダク
ト内に配設され、該ポストを、管寄せ一体支持部材に接
合されたブラケットにより挾み込むようにして鉛直方向
に摺動可能に係合する構造とすることが好ましい。この
ような構造とすることにより、管寄せ側の鉛直方向の伸
縮量をケーシング側に設けたポストと、管寄せ側に設け
たブラケットとの取合い部で効果的に吸収することがで
き、また、保温材の取付け部は、ケーシング側のポスト
部のみとなるので、排ガスダクトの保温性を損なうこと
なく信頼性の高い伝熱管群支持構造が得られる。According to the heat transfer tube group supporting device of the present invention,
As described above, in a duct or a flue through which exhaust gas flows, a heat transfer tube group having vertical pipe moving parts is arranged in the vertical direction, and the vertical extension reference point of the heat transfer tube is at the bottom, A plurality of self-supporting heat transfer tube groups, in which the lower tube pulling part of the heat tube group is fixed on a support table provided at the bottom of the duct, and the upper tube pulling part is held by a support part provided in the upper casing of the duct. In the support device for the arranged heat transfer tube group, a tube having a structure in which a lug is joined to the upper tube draw part of the heat transfer tube group so that the upper tube draw parts of the plurality of heat transfer tube groups can be integrally supported. The lugs of the pipe pulling portion are attached to the pulling integrated support member in a structure that absorbs a relative expansion difference in the vertical direction of each heat transfer tube group and supports a horizontal force in the flow direction of the exhaust gas. Join the bracket to the integrated support member,
The post is fixed to a support member provided in the upper casing of the duct, and the bracket and the post are engaged and supported so as to absorb the expansion and contraction amount of the pipe pulling portion in the vertical direction. In this way, the pipe pulling portion of each heat transfer pipe group can be collectively supported in the direction perpendicular to the flow of exhaust gas by the pipe pulling integrated support member, and the exhaust heat recovery Even if the boiler becomes large, the heat transfer tube panel (heat transfer tube group) can be arranged in two or three divisions at right angles to the exhaust gas flow. Also, the number of posts provided on the support member of the upper casing of the exhaust gas duct is reduced, the heat insulating material on the inner surface of the casing is not damaged, and therefore the heat loss from the duct surface can be further reduced compared to the conventional case. The heat efficiency of the exhaust heat recovery boiler is improved. Further, since the lugs of the pipe pulling portion are attached to the pipe pulling integrated support member in a structure capable of absorbing dimensional changes due to thermal expansion and contraction of the heat transfer pipes, the relative difference in vertical elongation between the plurality of heat transfer pipe groups is prevented. It can absorb the horizontal force in the exhaust gas flow direction at the same time, and is suitable for absorbing the horizontal force at the time of vibration caused by an external force such as an earthquake. A support device is obtained. In addition, the amount of vertical movement on the pipe pulling side can be absorbed by the post provided on the casing side and the engaging portion (fitting portion or fitting inserting portion) of the bracket on the pipe pulling side. A high heat transfer tube group support structure can be obtained. Further, the heat insulating layer on the inner surface of the casing may be attached only to the post portion, and the heat insulating effect on the inner surface of the duct is hardly impaired. Further, as described in claim 2, a vertical extension reference point of the heat transfer tube is located at an upper portion, and the upper pipe pulling portion of the heat transfer tube group is hung from a support portion provided in an upper casing of the duct. Also in a heat transfer tube group supporting device in which a plurality of hanging-type heat transfer tube groups are suspended and supported by a lug, the lower part of the heat transfer tube group is provided with a lug joined to the lower part of the plurality of heat transfer tube groups. In the pipe header integrated support member having a structure capable of integrally supporting the pipe header part, the lugs of the pipe header part absorb the relative difference in elongation in the vertical direction of each heat transfer tube group, and It is attached to a structure that supports horizontal force, a bracket is joined to the pipe header integrated support member, and a post is fixed to a support member provided in the bottom casing of the duct. It absorbs the amount of vertical expansion and contraction. With the structure for engaging the support supporting the can structure, similar actions and effects as tube bank supporting structure according to the claim 1 can be obtained. In addition, in the heat transfer tube group support device according to claim 1 or 2, as described in claim 3, for example, a lug joined to the upper or lower pipe pulling part,
The shape of the pin hole of the lug that connects the pipe header integrated support member with a pin is a round hole in the lug of the pipe header portion located at the front and rear portions of the exhaust gas flow, and the middle portion or center thereof. The pin hole provided in the lug of the header portion located in the section may be an elliptical hole or an elongated hole that is long in the vertical direction, and may have a structure capable of absorbing the relative difference in elongation in the vertical direction of each header portion. preferable. By adopting such a structure, the vertical relative expansion difference of each heat transfer tube panel (heat transfer tube group) is absorbed by the elliptical hole or elongated hole, and an earthquake such as an earthquake in the exhaust gas flow direction occurs. A heat transfer tube group support device having a structure suitable for supporting a horizontal force generated by an external force can be obtained. Further, in the heat transfer tube group support device according to claim 1 or 2, the post fixed to the support member provided in the upper casing of the duct or the bottom casing of the duct is provided as described in claim 4. The post fixed to the supporting member is disposed in the duct by passing through the filling layer of the heat insulating material provided on the inner surface of the casing of the duct, and the post is fixed by the bracket joined to the pipe header integrated supporting member. It is preferable to have a structure in which it is slidably engaged so as to be slidable in the vertical direction. With such a structure, the vertical expansion / contraction amount on the pipe-heading side can be effectively absorbed by the joint between the post provided on the casing side and the bracket provided on the pipe-heading side, and Since the heat insulating material is attached only to the post portion on the casing side, a highly reliable heat transfer tube group support structure can be obtained without impairing the heat insulating property of the exhaust gas duct.
【０００７】[0007]
【実施例】以下に本発明の実施例を挙げ、図面を用いて
さらに詳細に説明する。 〈実施例１〉図１は、鉛直方向の伸び基準点Ｆが下部に
あって、下部管寄せ部を支持し自立型の伝熱管群を上部
管寄せ部で保持する伝熱管支持装置の構成を示す模式図
である。なお、図２は図１のＢ−Ｂ矢視図で、排ガス流
に対し直角方向の伸び基準点Ｃは図１の下部に示す。本
実施例における伝熱管群の支持装置は、まず、上部管寄
せ１５の上部に、排ガス流れ方向に、ラグ２３を取付け
る。このラグ２３を挾み込む構造に、管寄せ一体型支持
部材２５と、ピン２４で接合する。排ガス流れ方向の最
前流と最後流の上部管寄せ用ラグ２３ａのピン穴は丸穴
とし、管寄せ一体型支持部材２５の自重を支持するが、
伝熱管群の中央部の上部管寄せ１５用のラグ２３ｂのピ
ン穴は、各上部管寄せ１５には鉛直方向に相対的伸び差
があることから、鉛直方向に長い長丸穴（長円形ないし
は溝状に長い穴）として相対的な伸び差を吸収する。次
に、ケーシング１２の上部外面に取付けた支持梁２１か
ら、保温材１３を貫通してケーシング１２の内部にポス
ト２２を取付け、排ガス流れ方向にポスト２２を挾み込
むように、管寄せ一体型支持部材２５に接合したブラケ
ット２６により保持する。排ガス流れ方向に、１個以上
複数のの管寄せからなる自立型伝熱管群の上部管寄せ１
５を、地震等の外力による振動時の排ガス流れ方向の水
平力を支持する構造として、上部管寄せ１５に取付けた
ラグ２３を、管寄せ一体型支持部材２５と、ピン２４で
連結することにより、ダクトのケーシング１２の内部で
伝熱管群を一体型の構造とする。なお、排ガス流れ方向
において、前後に配設された各上部管寄せ１５間の鉛直
方向の相対的な伸び差が吸収できるように、管寄せ一体
型支持部材２５のピン２４の取合い穴を鉛直方向に長い
丸穴あるいは長穴とすることにより、上記伸び差を吸収
し、かつ排ガス流れ方向の水平力を支持するものであ
る。 一方、ケーシング１２の外側に設置した支持梁２
１からケーシング１２の保温材１３を貫通して、ケーシ
ング１２の内側に突出したポスト２２を取付け、管寄せ
一体型支持部材２５に接合したブラケット２６により、
ポスト２２を排ガスの流れ方向の前後に挾み込むように
取付け、各伝熱管群を一体型として排ガス流れ方向の水
平力を、ケーシング１２側に設けられたポスト２２に伝
達し支持梁２１によりサポートする。また、上部管寄せ
１５の鉛直、上方向の伸び量は、管寄せ一体型支持部材
２５側に設けられているブラケット２６と、ケーシング
側に設けられているポスト２２との取合い部で吸収する
構造とするものである。Embodiments of the present invention will be described below in more detail with reference to the drawings. <Embodiment 1> FIG. 1 shows a structure of a heat transfer tube supporting device in which a vertical extension reference point F is located at a lower portion, and which supports a lower pipe pulling portion and holds an independent heat transfer tube group at an upper pipe pulling portion. It is a schematic diagram which shows. Note that FIG. 2 is a view taken along the line BB of FIG. 1, and the extension reference point C in the direction perpendicular to the exhaust gas flow is shown in the lower portion of FIG. In the support device for the heat transfer tube group in the present embodiment, first, the lug 23 is attached to the upper part of the upper header 15 in the exhaust gas flow direction. The structure in which the lug 23 is sandwiched is joined to the pipe header integrated support member 25 by the pin 24. Although the pin holes of the foremost flow and the last flow of the upper pipe header lug 23a in the exhaust gas flow direction are round holes, and support the own weight of the header header integrated support member 25.
The pin hole of the lug 23b for the upper header 15 in the central portion of the heat transfer tube group has an elongated round hole (ellipse or oval) that is long in the vertical direction because each upper header 15 has a relative expansion difference in the vertical direction. It absorbs the relative difference in elongation as a long groove). Next, from the support beam 21 attached to the outer surface of the upper part of the casing 12, the post 22 is attached to the inside of the casing 12 through the heat insulating material 13, and the post 22 is sandwiched in the exhaust gas flow direction so that the post 22 is integrated. It is held by a bracket 26 joined to the support member 25. An upper part of a self-standing heat transfer tube group consisting of one or more pipes in the exhaust gas flow direction 1
5 has a structure for supporting a horizontal force in the exhaust gas flow direction at the time of vibration due to an external force such as an earthquake. By connecting the lug 23 attached to the upper header 15 to the header integrated support member 25 and the pin 24. The heat transfer tube group has an integrated structure inside the casing 12 of the duct. In the exhaust gas flow direction, the fitting hole of the pin 24 of the pipe header integrated support member 25 is vertically arranged so that the relative difference in vertical extension between the upper pipe headers 15 arranged in front and rear can be absorbed. The long round hole or the long hole absorbs the difference in elongation and supports the horizontal force in the exhaust gas flow direction. On the other hand, the support beam 2 installed outside the casing 12
1 through the heat insulating material 13 of the casing 12, the post 22 protruding inside the casing 12 is attached, and by the bracket 26 joined to the pipe header integrated support member 25,
The post 22 is attached so as to sandwich the exhaust gas in the front-back direction, and each heat transfer tube group is integrated to transmit the horizontal force in the exhaust gas flow direction to the post 22 provided on the casing 12 side and supported by the support beam 21. To do. Further, the vertical and upward extension amounts of the upper header 15 are absorbed by the joint portion between the bracket 26 provided on the header integrated support member 25 side and the post 22 provided on the casing side. It is what
【０００８】〈実施例２〉図３に、本実施例で例示する
伝熱管群の支持装置を示す。本実施例においては上部管
寄せ１５を吊り下げて保持する吊下げ型の伝熱管群の支
持構造を示し、上記の実施例１の場合を上下逆にした構
造である。なお、図４は、図３のＤ−Ｄ矢視図である。
本実施例に示す伝熱管群支持装置の組立て手順は、ま
ず、下部管寄せ１７の下側に、排ガス流れ方向にラグ２
３を取付ける。このラグ２３を挾み込むように、管寄せ
一体型支持部材２５を配し、ピン２４で接合する。そし
て、排ガス流れ方向の最前流と最後流の下部管寄せに設
けるラグ２３ａのピン穴は丸穴とし、上記管寄せ一体型
支持部材２５の自重を支持するが、中央部の伝熱管群の
下部管寄せに設けるラグ２３ｂのピン穴は、各下部管寄
せには鉛直方向の相対的伸び差があることから、鉛直方
向に長い長穴（長円形の穴または溝状に長い穴）として
相対的な伸び差を吸収する。次に、ケーシング１２の外
面に取付けた支持梁２１からケーシング１２の内部にポ
スト２２を取付け、排ガス流れ方向にポスト２２を挾み
込むように、下部の管寄せ一体型支持部材２５に設けた
ブラケット２６により取付け支持し、各伝熱管群の管寄
せ部の鉛直方向の伸縮量を吸収し得る構造に取付ける。<Embodiment 2> FIG. 3 shows a heat transfer tube group support device exemplified in this embodiment. In the present embodiment, a supporting structure of a suspension type heat transfer tube group that suspends and holds the upper header 15 is shown, which is a structure in which the case of the above first embodiment is turned upside down. Note that FIG. 4 is a view taken in the direction of arrows D-D in FIG. 3.
In the procedure for assembling the heat transfer tube group support device according to the present embodiment, first, the lug 2 is provided below the lower pipe header 17 in the exhaust gas flow direction.
Install 3. A pipe header integrated type support member 25 is arranged so as to sandwich the lug 23, and is joined by a pin 24. And, the pin holes of the lugs 23a provided in the foremost flow and the last flow in the exhaust gas flow direction are round holes to support the own weight of the above-mentioned pipe header integrated support member 25, but the lower part of the heat transfer tube group in the central portion. The pin hole of the lug 23b provided in the header is relatively long as a long hole in the vertical direction (oblong hole or long groove-like hole) because each lower header has a relative difference in vertical elongation. Absorbs the difference in elongation. Next, the post 22 is attached to the inside of the casing 12 from the support beam 21 attached to the outer surface of the casing 12, and the bracket is provided on the lower pipe header integrated support member 25 so as to sandwich the post 22 in the exhaust gas flow direction. It is attached and supported by means of 26, and is attached to a structure capable of absorbing the amount of vertical expansion and contraction of the pipe pulling portion of each heat transfer tube group.
【０００９】[0009]
【発明の効果】以上詳細に説明したごとく、本発明の伝
熱管群支持装置によれば、請求項１に記載のように、自
立型の伝熱管群支持構造において、伝熱管群の上部管寄
せ部にラグを接合し、該管寄せ部のラグを管寄せ一体支
持部材に、伝熱管の熱膨張、収縮による寸法変化を吸収
し得る構造に取付け、さらに管寄せ一体支持部材にブラ
ケットを接合して、排ガスダクトの上部ケーシングにポ
ストを固定し、上記ブラケットと上記ポストを、管寄せ
部の鉛直方向の伸縮量を吸収し得るように係合支持する
構造としているため、各伝熱管群は管寄せ一体支持部材
により一括して支持することができ、排熱回収ボイラが
大型となっても伝熱管群を２分割あるいは３分割して配
設することが可能となる。また、排ガスダクトの上部ケ
ーシングに設ける伝熱管群支持用のポストの数も少なく
なり、ケーシング内面の保温材を損なうことがなく、ダ
クト表面からの熱損失も従来技術に比べて少なくなり熱
効率が向上する。さらに、管寄せ一体支持部材と管寄せ
部のラグとの接続を、伝熱管の熱膨張、収縮による寸法
変化を吸収し得る構造とし、複数の伝熱管群の鉛直方向
の相対的な伸び差を吸収することができると同時に、排
ガス流れ方向の水平力を支持することができ、地震等の
外力による水平力を吸収するのに好適な構造の伝熱管群
支持装置が得られる。また、管寄せ側の鉛直方向の移動
量は、ケーシング側に設けたポストと、管寄せ側のブラ
ケットの係合部で吸収することができ、信頼性の高い伝
熱管群支持構造が得られる。さらに、ポスト部のみにケ
ーシング内面の保温材を取付ければよいことになり、ダ
クト内面の保温効果を損なうことはほとんどない。ま
た、請求項２に記載のように、ダクトの上部ケーシング
に設けた支持部から懸垂支持する吊下げ型の伝熱管群を
複数個配設した伝熱管群支持装置においても、請求項１
と同様の構造としており、同様の効果が得られる。さら
に、請求項３に記載のように、排ガス流れの前部および
後部に位置する管寄せ部のラグに設けるピン穴は丸穴と
し、その中間部、あるいは中央部に位置する管寄せ部の
ラグに設けるピン穴は、鉛直方向に長い楕円形状の穴も
しくは長穴としているので、各管寄せ部の鉛直方向の相
対的な伸び差を吸収することができ、かつ排ガスの流れ
方向の地震等の外力による水平力を支持するのに好適な
構造となる。また、請求項４に記載のように、ポストを
ダクトのケーシングの内面に保温材を貫通してダクト内
に配設し、このポストと、管寄せ一体支持部材に設けた
ブラケットとを、鉛直方向に摺動可能に係合する構造と
しているので、管寄せ側の鉛直方向の伸縮量を効果的に
吸収することができる。また、ポスト部のみに保温材を
設ければよく、ダクトの保温性を損なうことなく信頼性
の高い伝熱管群支持装置が得られる。As described above in detail, according to the heat transfer tube group support device of the present invention, as described in claim 1, in the self-supporting heat transfer tube group support structure, the upper tube shifter of the heat transfer tube group is arranged. The lug of the pipe header part is attached to the pipe header integrated support member in a structure capable of absorbing the dimensional change due to thermal expansion and contraction of the heat transfer tube, and the bracket is joined to the pipe header integrated support member. The post is fixed to the upper casing of the exhaust gas duct, and the bracket and the post are engaged and supported so as to absorb the expansion and contraction amount in the vertical direction of the pipe draw part. It can be collectively supported by the gathering support member, and the heat transfer tube group can be divided into two or three parts even if the exhaust heat recovery boiler becomes large. Also, the number of posts for supporting the heat transfer tube group provided in the upper casing of the exhaust gas duct is reduced, the heat insulating material on the inner surface of the casing is not damaged, and the heat loss from the duct surface is also reduced compared to the conventional technology, improving thermal efficiency. To do. Furthermore, the connection between the pipe-heading integrated support member and the lugs of the pipe-heading part has a structure capable of absorbing dimensional changes due to thermal expansion and contraction of the heat-transfer pipes, so that a relative difference in vertical elongation between a plurality of heat-transfer pipe groups can be prevented. A heat transfer tube group supporting device having a structure capable of absorbing the horizontal force in the exhaust gas flow direction and absorbing the horizontal force due to an external force such as an earthquake can be obtained. Further, the amount of vertical movement on the pipe-heading side can be absorbed by the post provided on the casing side and the engaging portion of the bracket on the pipe-heading side, and a highly reliable heat transfer tube group support structure can be obtained. Further, the heat insulating material on the inner surface of the casing may be attached only to the post portion, and the heat insulating effect on the inner surface of the duct is hardly impaired. Further, as described in claim 2, also in a heat transfer tube group supporting device provided with a plurality of suspension type heat transfer tube groups suspended and supported from a support portion provided in the upper casing of the duct.
It has the same structure as, and the same effect can be obtained. Further, as described in claim 3, the pin holes provided in the lugs of the header portion located at the front and rear portions of the exhaust gas flow are round holes, and the lugs of the header portion located at the middle portion or the central portion thereof. Since the pin hole provided in is a long elliptical hole in the vertical direction or a long hole, it is possible to absorb the relative difference in expansion in the vertical direction of each pipe header, and to prevent earthquakes in the exhaust gas flow direction. The structure is suitable for supporting a horizontal force due to an external force. Further, as described in claim 4, the post is arranged in the duct by penetrating the heat insulating material on the inner surface of the casing of the duct, and the post and the bracket provided on the pipe header integrated support member are arranged in the vertical direction. Since the structure is slidably engaged with, it is possible to effectively absorb the amount of expansion and contraction in the vertical direction on the pipe approach side. Further, since it is sufficient to provide the heat insulating material only to the post portion, a highly reliable heat transfer tube group supporting device can be obtained without impairing the heat insulating property of the duct.
【図１】本発明の実施例１で例示した排熱回収ボイラに
おける自立型の伝熱管群支持構造を示す断面図。FIG. 1 is a cross-sectional view showing a self-supporting heat transfer tube group support structure in an exhaust heat recovery boiler exemplified in a first embodiment of the present invention.
【図２】図１に示すＢ−Ｂ矢視図。FIG. 2 is a BB arrow view shown in FIG.
【図３】本発明の実施例２で例示した排熱回収ボイラに
おける吊下げ型の伝熱管群支持構造を示す断面図。FIG. 3 is a cross-sectional view showing a suspension type heat transfer tube group support structure in the exhaust heat recovery boiler exemplified in Embodiment 2 of the present invention.
【図４】図３に示すＤ−Ｄ矢視図。FIG. 4 is a view on arrow D-D shown in FIG. 3.
【図５】従来の排熱回収ボイラの構成を示す模式図。FIG. 5 is a schematic diagram showing a configuration of a conventional exhaust heat recovery boiler.
【図６】図５に示すＡ−Ａ矢視図。FIG. 6 is a view on arrow AA shown in FIG.
【図７】図６に示すＥ部拡大図。7 is an enlarged view of an E portion shown in FIG.
１…過熱器 ２…高圧蒸発器 ３…脱硝装置 ４…高圧蒸発器 ５…高圧ドラム ６…高圧降水管 ７…高圧節炭器 ８…低圧蒸発器 ９…低圧ドラム １０…低圧降水管 １１…低圧節炭器 １２…ケーシング １３…保温材 １４…支持部材 １５…上部管寄せ １６…伝熱管 １７…下部管寄せ １８ａ、１８ｂ、１８ｃ、１８ｄ、１８ｅ…管寄せ支持
サポート １９…管寄せ支持部材 ２０…水平力支持部材 ２１…支持梁 ２２…ポスト ２３…ラグ ２３ａ…ラグ（丸穴付） ２３ｂ…ラグ（長丸穴付） ２４…ピン ２５…管寄せ一体型支持部材 ２６…ブラケット ２７…支持部材 ２８…吊り部材 ２９…ラグ ３０…ボックス ３１…保温カバー Ｃ…排ガス流に対し直角方向の伸び基準点 Ｆ…鉛直方向の伸び基準点 Ｇ…排ガス Ｓ1…高圧主蒸気 Ｓ2…低圧主蒸気DESCRIPTION OF SYMBOLS 1 ... Superheater 2 ... High pressure evaporator 3 ... Denitration device 4 ... High pressure evaporator 5 ... High pressure drum 6 ... High pressure downfall pipe 7 ... High pressure economizer 8 ... Low pressure evaporator 9 ... Low pressure drum 10 ... Low pressure downfall pipe 11 ... Low pressure Charcoal saver 12 ... Casing 13 ... Heat insulating material 14 ... Supporting member 15 ... Upper pipe header 16 ... Heat transfer tube 17 ... Lower pipe header 18a, 18b, 18c, 18d, 18e ... Pipe header support support 19 ... Pipe support member 20 ... Horizontal force support member 21 ... Support beam 22 ... Post 23 ... Lug 23a ... Lug (with a round hole) 23b ... Lug (with an oval hole) 24 ... Pin 25 ... Pipe-housing integrated support member 26 ... Bracket 27 ... Support member 28 ... hanging member 29 ... lug 30 ... box 31 ... insulation cover C ... elongation reference point perpendicular to the exhaust gas flow F ... vertical elongation reference point G ... exhaust S 1 ... high pressure main steam S 2 ... low-pressure main steam
Claims (4)
下に管寄せ部を有する伝熱管群を鉛直方向に配設した伝
熱管群支持装置において、伝熱管の鉛直方向の伸び基準
点が下部にあって、上記伝熱管群の下部管寄せ部を上記
ダクト内の底部に設けられた支持台上に固定し、上部管
寄せ部をダクトの上部ケーシングに設けた支持部で保持
する自立型の伝熱管群を複数個配設し、該伝熱管群の上
部管寄せ部にはラグを設け、上記複数個の伝熱管群の上
部管寄せ部を一体に支持する構造とした管寄せ一体支持
部材に、上記管寄せ部のラグを、各伝熱管群の鉛直方向
における相対的な伸び差を吸収し、かつ排ガスの流れ方
向の水平力を支持する構造に取付け、さらに上記管寄せ
一体支持部材にブラケットを接合して、上記ダクトの上
部ケーシングに設けた支持部材にポストを固定し、上記
ブラケットと上記ポストを、上記管寄せ部の鉛直方向の
伸縮量を吸収する構造に係合支持したことを特徴とする
伝熱管群支持装置。1. A heat transfer tube group supporting device in which a heat transfer tube group having vertically arranged pipe moving parts is vertically arranged in a duct or a flue passage through which exhaust gas flows, and a vertical extension reference point of the heat transfer tube is at a lower portion. There is a self-contained transfer mechanism in which the lower pipe pulling part of the heat transfer tube group is fixed on a support base provided in the bottom part of the duct, and the upper pipe pulling part is held by a support part provided in the upper casing of the duct. A pipe-heading integrated support member having a structure in which a plurality of heat pipe groups are arranged, and a lug is provided at an upper pipe-heading part of the heat transfer pipe group to integrally support the upper pipe-heading parts of the plurality of heat transfer pipe groups. A lug of the header portion is attached to a structure that absorbs a relative expansion difference in the vertical direction of each heat transfer tube group and supports a horizontal force in the flow direction of the exhaust gas, and further a bracket to the integral header support member. To the upper casing of the duct. And the post is fixed to the support member, the bracket and the post tube banks supporting device, characterized in that the engagement supporting structure which absorbs the vertical expansion and contraction of the pipe pulling unit.
下に管寄せ部を有する伝熱管群を鉛直方向に配設した伝
熱管群支持装置において、伝熱管の鉛直方向の伸び基準
点が上部にあって、上記伝熱管群の上部管寄せ部を、上
記ダクトの上部ケーシングに設けた支持部から吊り部材
により懸垂支持する吊り下げ型の伝熱管群を複数個配設
し、該伝熱管群の下部管寄せ部にはラグを設け、上記複
数個の伝熱管群の下部管寄せ部を一体に支持する構造と
した管寄せ一体支持部材に、上記管寄せ部のラグを、各
伝熱管の鉛直方向における相対的な伸び差を吸収し、か
つ排ガスの流れ方向の水平力を支持する構造に取付け、
さらに上記管寄せ一体支持部材にブラケットを接合し
て、上記ダクトの底部ケーシングに設けた支持部材にポ
ストを固定し、上記ブラケットと上記ポストを、上記管
寄せ部の鉛直方向の伸縮量を吸収し得る構造に係合支持
したことを特徴とする伝熱管群支持装置。2. A heat transfer tube group supporting device in which a heat transfer tube group having vertically arranged pipe moving parts is vertically arranged in a duct or a flue passage through which exhaust gas flows, and a vertical extension reference point of the heat transfer tube is located at an upper part. There, a plurality of hanging-type heat transfer tube groups for suspending and supporting the upper pipe pulling portion of the heat transfer tube group by a hanging member from a support portion provided in the upper casing of the duct are provided. A lug is provided in the lower pipe pulling part, and the lug of the pipe pulling part is vertically attached to the pipe pulling integrated support member having a structure in which the lower pipe pulling part of the plurality of heat transfer tube groups is integrally supported. Mounted in a structure that absorbs the relative expansion difference in the direction and supports the horizontal force in the exhaust gas flow direction,
Further, a bracket is joined to the pipe header integrated support member, and the post is fixed to a support member provided on the bottom casing of the duct, and the bracket and the post are absorbed by the amount of expansion and contraction of the pipe header portion in the vertical direction. A heat transfer tube group support device, characterized in that the heat transfer tube group support device is engaged with and supported by the structure to be obtained.
部のラグを、各伝熱管群の鉛直方向における相対的な伸
び差を吸収し、かつ排ガスの流れ方向の水平力を支持す
る構造は、上部または下部管寄せ部に接合したラグと、
管寄せ一体支持部材をピンによって連結し、上記ラグの
ピン穴の形状を、排ガス流れの前部および後部に位置す
る管寄せ部のラグに設けるピン穴は丸穴とし、その中間
部に位置する管寄せ部のラグに設けるピン穴は、鉛直方
向に長い楕円形状の穴もしくは長穴としたことを特徴と
する伝熱管群支持装置。3. The structure according to claim 1 or 2, wherein the lugs of the pipe pulling portion absorb a relative difference in elongation in the vertical direction of each heat transfer tube group and support a horizontal force in the exhaust gas flow direction. Is a lug joined to the upper or lower header,
The pipe header integrated support member is connected by a pin, and the shape of the pin hole of the lug is formed in the lug of the pipe header located at the front and rear of the exhaust gas flow as a round hole, and the pin hole is located at the intermediate portion. The heat transfer tube group support device according to claim 1, wherein the pin hole provided in the lug of the pipe pulling portion is an elliptical hole or a long hole that is long in the vertical direction.
の上部ケーシングに設けた支持部材に固定するポスト、
もしくはダクトの底部ケーシングに設けた支持部材に固
定するポストは、ダクトのケーシングの内面に設けられ
ている保温材を通過してダクト内に配設され、該ポスト
と、管寄せ一体支持部材に接合されたブラケットを摺動
可能に係合支持し、各管寄せ部の鉛直方向の伸縮量を吸
収し得る構造としたことを特徴とする伝熱管群支持装
置。4. The post according to claim 1 or 2, wherein the post is fixed to a support member provided in an upper casing of the duct,
Alternatively, the post fixed to the support member provided in the bottom casing of the duct is disposed in the duct by passing through the heat insulating material provided on the inner surface of the duct casing, and is joined to the post and the pipe header integrated support member. Heat transfer tube group support device having a structure capable of slidably engaging and supporting the formed bracket so as to absorb the amount of expansion and contraction of each tube pulling portion in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14154094A JP3763856B2 (en) | 1994-06-23 | 1994-06-23 | Heat transfer tube group support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14154094A JP3763856B2 (en) | 1994-06-23 | 1994-06-23 | Heat transfer tube group support device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH085001A true JPH085001A (en) | 1996-01-12 |
| JP3763856B2 JP3763856B2 (en) | 2006-04-05 |
Family
ID=15294351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14154094A Expired - Lifetime JP3763856B2 (en) | 1994-06-23 | 1994-06-23 | Heat transfer tube group support device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3763856B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100362917B1 (en) * | 1998-10-21 | 2003-04-18 | 두산중공업 주식회사 | Waste heat boiler finite tube for combined power generation |
| JP2009079822A (en) * | 2007-09-26 | 2009-04-16 | Babcock Hitachi Kk | Damping structure of exhaust heat recovery boiler |
| KR20140124482A (en) * | 2013-04-17 | 2014-10-27 | 현대중공업 주식회사 | Tube boiler for exhaust gas of engine |
| JP2015194281A (en) * | 2014-03-31 | 2015-11-05 | パンパシフィック・カッパー株式会社 | Waste heat recovery boiler |
| WO2022113484A1 (en) * | 2020-11-24 | 2022-06-02 | 三菱重工業株式会社 | Support mechanism for exhaust heat recovery boilers |
-
1994
- 1994-06-23 JP JP14154094A patent/JP3763856B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100362917B1 (en) * | 1998-10-21 | 2003-04-18 | 두산중공업 주식회사 | Waste heat boiler finite tube for combined power generation |
| JP2009079822A (en) * | 2007-09-26 | 2009-04-16 | Babcock Hitachi Kk | Damping structure of exhaust heat recovery boiler |
| KR20140124482A (en) * | 2013-04-17 | 2014-10-27 | 현대중공업 주식회사 | Tube boiler for exhaust gas of engine |
| JP2015194281A (en) * | 2014-03-31 | 2015-11-05 | パンパシフィック・カッパー株式会社 | Waste heat recovery boiler |
| WO2022113484A1 (en) * | 2020-11-24 | 2022-06-02 | 三菱重工業株式会社 | Support mechanism for exhaust heat recovery boilers |
| JP2022083238A (en) * | 2020-11-24 | 2022-06-03 | 三菱重工業株式会社 | Support mechanism for exhaust heat recovery boiler |
| CN116438406A (en) * | 2020-11-24 | 2023-07-14 | 三菱重工业株式会社 | Support mechanism for waste heat recovery boiler |
| CN116438406B (en) * | 2020-11-24 | 2025-10-31 | 三菱重工业株式会社 | Supporting mechanism of waste heat recovery boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3763856B2 (en) | 2006-04-05 |
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