JP2021196067A - Heat transfer pipe panel intermediate structure and boiler construction method - Google Patents

Heat transfer pipe panel intermediate structure and boiler construction method Download PDF

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JP2021196067A
JP2021196067A JP2020100170A JP2020100170A JP2021196067A JP 2021196067 A JP2021196067 A JP 2021196067A JP 2020100170 A JP2020100170 A JP 2020100170A JP 2020100170 A JP2020100170 A JP 2020100170A JP 2021196067 A JP2021196067 A JP 2021196067A
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heat transfer
transfer tube
reinforcing member
tube panel
intermediate structure
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JP7409972B2 (en
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欣央 野村
Yoshio Nomura
修 内田
Osamu Uchida
浩朗 郡山
Hiroo Koriyama
賢司 中井
Kenji Nakai
光輝 藤原
Mitsuteru Fujiwara
揮章 市川
Furuaki Ichikawa
優介 高橋
Yusuke Takahashi
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IHI Corp
IHI Plant Services Corp
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IHI Corp
IHI Plant Services Corp
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Abstract

To reduce the number of times of hoisting heat transfer pipe panels and the number of times of welding in high places.SOLUTION: There are provided a plurality of heat transfer pipe panels arranged adjacent to each other, a reinforcement member provided on one surface of plural heat transfer pipe panels, and a connection member connecting the plurality of heat transfer pipe panels and the reinforcement member.SELECTED DRAWING: Figure 1

Description

本発明は、伝熱管パネル中間構造体及びボイラ建設方法に関する。 The present invention relates to a heat transfer tube panel intermediate structure and a boiler construction method.

下記特許文献１には、排熱回収ボイラの建設方法が開示されている。この排熱回収ボイラの建設方法は、伝熱管群と該伝熱管群の管寄せとからなる伝熱管パネル等の部材を工場でブロックとして予め製造し、このブロックを建設現場に搬送して吊上げることにより架構の所定箇所に付設するものである。 The following Patent Document 1 discloses a method for constructing an exhaust heat recovery boiler. In the construction method of this exhaust heat recovery boiler, a member such as a heat transfer tube panel consisting of a heat transfer tube group and a tube group of the heat transfer tube group is manufactured in advance as a block at a factory, and this block is transported to a construction site and lifted. As a result, it is attached to a predetermined location on the frame.

特開２００３−２２２３０２号公報Japanese Unexamined Patent Publication No. 2003-222302

ところで、上記背景技術は、ブロック毎つまり伝熱管パネル毎にクレーンで吊上げて敷設するものであり、クレーンによる吊上げ回数が伝熱管パネルの枚数分必要となる。また、架構に付設された伝熱管パネルは隣り合う者同士が溶接によって接合され、またこの溶接作業は高所作業となるので煩雑である。したがって、上記背景技術は、伝熱管パネルの吊上げ回数が多いと共に高所での溶接回数が多いので、工期の長期化と建設コスト高を招くものである。また、上記溶接作業は、空中作業となるため特殊足場の建設が必要であり、合わせ作業が困難である。 By the way, in the above background technology, each block, that is, each heat transfer tube panel is lifted and laid by a crane, and the number of times of lifting by the crane is required for the number of heat transfer tube panels. Further, the heat transfer tube panel attached to the frame is complicated because the adjacent persons are joined by welding and the welding work is performed at a high place. Therefore, the above-mentioned background technology causes a long construction period and a high construction cost because the heat transfer tube panel is frequently lifted and welded at a high place. Further, since the above welding work is an aerial work, it is necessary to construct a special scaffolding, which makes the matching work difficult.

本発明は、上述した事情に鑑みてなされたものであり、伝熱管パネルの吊上げ回数及び高所での溶接回数の削減を目的とするものである。 The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the number of times the heat transfer tube panel is lifted and the number of times of welding at a high place.

上記目的を達成するために、本発明では、伝熱管パネル中間構造体に係る第１の解決手段として、隣接配置された複数の伝熱管パネルと、前記複数の伝熱管パネルの一面に設けられた補強部材と、前記複数の伝熱管パネルと前記補強部材とを連結させる連結部材とを備える、という手段を採用する。 In order to achieve the above object, in the present invention, as a first solution for the heat transfer tube panel intermediate structure, a plurality of heat transfer tube panels arranged adjacent to each other and one surface of the plurality of heat transfer tube panels are provided. A means of including a reinforcing member and a connecting member for connecting the plurality of heat transfer tube panels and the reinforcing member is adopted.

本発明では、伝熱管パネル中間構造体に係る第２の解決手段として、上記第１の解決手段において、前記補強部材において、互いに隣り合う前記伝熱管パネルの突合部に符合する部分は着脱自在である、という手段を採用する。 In the present invention, as a second solution for the heat transfer tube panel intermediate structure, in the first solution, the portion of the reinforcing member that coincides with the abutting portion of the heat transfer tube panels adjacent to each other is removable. Adopt the means that there is.

本発明では、伝熱管パネル中間構造体に係る第３の解決手段として、上記第１または第２の解決手段において、前記補強部材は、前記複数の伝熱管パネルに差し渡すように複数設けられた第１の補強部材と、該第１の補強部材に対して交差するように複数設けられた第２の補強部材とを備える、という手段を採用する。 In the present invention, as a third solution for the heat transfer tube panel intermediate structure, in the first or second solution, a plurality of the reinforcing members are provided so as to be delivered to the plurality of heat transfer tube panels. A means is adopted in which a first reinforcing member and a second reinforcing member provided so as to intersect the first reinforcing member are provided.

本発明では、伝熱管パネル中間構造体に係る第４の解決手段として、上記第３の解決手段において、前記第１の補強部材は、前記複数の伝熱管パネルに接触するように設けられ、前記第２の補強部材は、前記第１の補強部材に対して前記複数の伝熱管パネルの反対側に設けられる、という手段を採用する。 In the present invention, as a fourth solution for the heat transfer tube panel intermediate structure, in the third solution, the first reinforcing member is provided so as to come into contact with the plurality of heat transfer tube panels. The second reinforcing member adopts a means that is provided on the opposite side of the plurality of heat transfer tube panels with respect to the first reinforcing member.

本発明では、伝熱管パネル中間構造体に係る第５の解決手段として、上記第１〜第３のいずれかの解決手段において、前記補強部材の一端には吊具が設けられる、という手段を採用する。 In the present invention, as a fifth solution means for the heat transfer tube panel intermediate structure, in any of the first to third solutions, a means is adopted in which a hanging tool is provided at one end of the reinforcing member. do.

本発明では、ボイラ建設方法に係る第１の解決手段として、上記第１〜第４のいずれかの解決手段に係る伝熱管パネル中間構造体を組み立てる第１工程と、前記伝熱管パネル中間構造体を搬送装置で吊上げて敷設する第２工程とを有する、という手段を採用する。 In the present invention, as the first solution means for the boiler construction method, the first step for assembling the heat transfer tube panel intermediate structure according to any one of the first to fourth solutions and the heat transfer tube panel intermediate structure. The means of having a second step of lifting and laying the above with a transport device is adopted.

本発明では、ボイラ建設方法に係る第２の解決手段として、上記第１の解決手段において、前記第１工程は、前記伝熱管パネル及び前記補強部材を地上で仮組することにより仮組構造体を組み立てる仮組工程と、前記仮組構造体を複数の仮組ユニットに分割する分割工程と、前記仮組ユニットを架構内に搬送して本組する本組工程とを有する、という手段を採用する。 In the present invention, as a second solution according to the boiler construction method, in the first solution, the first step is a temporary assembly structure by temporarily assembling the heat transfer tube panel and the reinforcing member on the ground. A means of having a temporary assembly process of assembling, a division process of dividing the temporary assembly structure into a plurality of temporary assembly units, and a main assembly process of transporting the temporary assembly unit into a frame and assembling the temporary assembly unit is adopted. do.

本発明によれば、伝熱管パネルの吊上げ回数及び高所での溶接回数を削減することが可能である。 According to the present invention, it is possible to reduce the number of times the heat transfer tube panel is lifted and the number of times it is welded at a high place.

本発明の一実施形態におけるボイラの概略構造を示す模式図である。It is a schematic diagram which shows the schematic structure of the boiler in one Embodiment of this invention. 本発明の一実施形態に係る伝熱管パネル中間構造体の構成を示す正面図（ａ）、側面図（ｂ）及び底面図（ｃ）である。It is a front view (a), a side view (b) and a bottom view (c) which show the structure of the heat transfer tube panel intermediate structure which concerns on one Embodiment of this invention. 本発明の一実施形態における伝熱管パネルの突合部を示す模式図である。It is a schematic diagram which shows the butt part of the heat transfer tube panel in one Embodiment of this invention. 本発明の一実施形態に係るボイラ建設方法を示す工程図である。It is a process drawing which shows the boiler construction method which concerns on one Embodiment of this invention.

以下、図面を参照して、本発明の一実施形態について説明する。
最初に、本実施形態に係る伝熱管パネル中間構造体及びボイラ建設方法が適用されるボイラの概略構造を図１を参照して説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First, the heat transfer tube panel intermediate structure according to the present embodiment and the schematic structure of the boiler to which the boiler construction method is applied will be described with reference to FIG.

このボイラは、図１に示すように、ボイラ架構Ｋにボイラ本体Ｈが支持された構造を備える。ボイラ架構Ｋは、鋼材等の強度部材を組み合わせた大型構造物であり、地上に所定面積かつ所定高さに構築されている。このボイラ架構Ｋは、ボイラ本体Ｈを吊持するための十分な強度を確保するために、図示するように長尺状の強度部材を縦横に組み合わせた構造を備える。 As shown in FIG. 1, this boiler has a structure in which the boiler main body H is supported by the boiler frame K. The boiler frame K is a large structure in which strength members such as steel materials are combined, and is constructed on the ground in a predetermined area and at a predetermined height. The boiler frame K includes a structure in which long strength members are combined vertically and horizontally as shown in the figure in order to secure sufficient strength for suspending the boiler main body H.

ボイラ本体Ｈは、このようなボイラ架構Ｋに支持された吊り構造物であり、複数の伝熱管パネルを側面に付設することにより外形が形成される。このボイラ本体Ｈは、微粉炭やバイオマス等の燃料を燃焼させることによって水蒸気を発生させ、当該水蒸気を成果物として出力する。このボイラ本体Ｈは、複数の伝熱管パネルや内部に設けられた多数の水熱管を用いて燃焼ガスから熱を回収することにより、各水熱管内を流れる水を気化させて水蒸気を発生させる。 The boiler main body H is a suspended structure supported by such a boiler frame K, and an outer shape is formed by attaching a plurality of heat transfer tube panels to the side surfaces. The boiler main body H generates steam by burning fuel such as pulverized coal or biomass, and outputs the steam as a product. The boiler main body H recovers heat from the combustion gas by using a plurality of heat transfer tube panels and a large number of water heat pipes provided inside, thereby vaporizing the water flowing in each water heat pipe to generate steam.

図２は、このようなボイラ本体Ｈの側面に複数の伝熱管パネルを付設する際に用いられる伝熱管パネル中間構造体Ａを示している。この伝熱管パネル中間構造体Ａは、図示するように複数の伝熱管パネル１Ａ〜１Ｄ、複数の横補強部材２、複数の縦補強部材３、複数のローラ４、複数のチルタンク５、複数の吊板６、複数の係合部材７及び複数の連結部材８を備えている。 FIG. 2 shows a heat transfer tube panel intermediate structure A used when a plurality of heat transfer tube panels are attached to the side surface of such a boiler main body H. As shown in the figure, the heat transfer tube panel intermediate structure A includes a plurality of heat transfer tube panels 1A to 1D, a plurality of lateral reinforcing members 2, a plurality of vertical reinforcing members 3, a plurality of rollers 4, a plurality of chill tanks 5, and a plurality of suspensions. It includes a plate 6, a plurality of engaging members 7, and a plurality of connecting members 8.

複数の伝熱管パネル１Ａ〜１Ｄは、略同一に構成された４枚の板状部材である。各々の伝熱管パネル１Ａ〜１Ｄは、図３に示すように、隣接する複数の伝熱管１ａを相互に接合した板状部材であり、伝熱管１ａの配列方向が同一となるように隣接配置されていると共に隣り合う物同士が相互に接合されている。 The plurality of heat transfer tube panels 1A to 1D are four plate-shaped members configured substantially in the same manner. As shown in FIG. 3, each heat transfer tube panel 1A to 1D is a plate-shaped member in which a plurality of adjacent heat transfer tubes 1a are joined to each other, and are arranged adjacent to each other so that the arrangement directions of the heat transfer tubes 1a are the same. At the same time, adjacent objects are joined to each other.

すなわち、４枚の伝熱管パネル１Ａ〜１Ｄは、伝熱管パネル１Ａの隣に伝熱管パネル１Ｂが面一に配置され、伝熱管パネル１Ｂの隣に伝熱管パネル１Ｃが面一に配置され、伝熱管パネル１Ｃの隣に伝熱管パネル１Ｄが面一に配置されている。 That is, in the four heat transfer tube panels 1A to 1D, the heat transfer tube panel 1B is arranged flush with the heat transfer tube panel 1A, and the heat transfer tube panel 1C is arranged flush with the heat transfer tube panel 1B. Next to the heat tube panel 1C, the heat transfer tube panel 1D is arranged flush with each other.

また、伝熱管パネル１Ａにおいて伝熱管パネル１Ｂに隣接する伝熱管１ａは、伝熱管パネル１Ｂにおいて伝熱管パネル１Ａに隣接する伝熱管１ａと接合されている。また、伝熱管パネル１Ｂにおいて伝熱管パネル１Ｃに隣接する伝熱管１ａは、伝熱管パネル１Ｃにおいて伝熱管パネル１Ｂに隣接する伝熱管１ａと接合されている。また、伝熱管パネル１Ｃにおいて伝熱管パネル１Ｄに隣接する伝熱管１ａは、伝熱管パネル１Ｄにおいて伝熱管パネル１Ｃに隣接する伝熱管１ａと接合されている。すなわち、互いに隣り合う伝熱管パネル１Ａ〜１Ｄの突合部Ｐは、相互に接合されている。 Further, the heat transfer tube 1a adjacent to the heat transfer tube panel 1B in the heat transfer tube panel 1A is joined to the heat transfer tube 1a adjacent to the heat transfer tube panel 1A in the heat transfer tube panel 1B. Further, the heat transfer tube 1a adjacent to the heat transfer tube panel 1C in the heat transfer tube panel 1B is joined to the heat transfer tube 1a adjacent to the heat transfer tube panel 1B in the heat transfer tube panel 1C. Further, the heat transfer tube 1a adjacent to the heat transfer tube panel 1D in the heat transfer tube panel 1C is joined to the heat transfer tube 1a adjacent to the heat transfer tube panel 1C in the heat transfer tube panel 1D. That is, the abutting portions P of the heat transfer tube panels 1A to 1D adjacent to each other are joined to each other.

このような複数（４枚）の伝熱管パネル１Ａ〜１Ｄは、全体として複数の伝熱管が同一方向に延在すると共に同一方向に配列し、かつ互いに隣り合う伝熱管が相互に接合された平板状の伝熱管接合体である。このような伝熱管接合体は、厚さに対して外形が極端に大きな膜状体である。ボイラの規模にも依るが、伝熱管接合体の厚さつまり伝熱管の管径は例えば数ｃｍ、また１辺の長さは例えば２０ｍにも及ぶ。 In such a plurality (4 sheets) of heat transfer tube panels 1A to 1D, as a whole, a plurality of heat transfer tubes extend in the same direction and are arranged in the same direction, and the heat transfer tubes adjacent to each other are joined to each other as a flat plate. It is a heat transfer tube joint. Such a heat transfer tube joint is a film-like body having an extremely large outer shape with respect to the thickness. Depending on the scale of the boiler, the thickness of the heat transfer tube joint, that is, the diameter of the heat transfer tube is, for example, several cm, and the length of one side is, for example, 20 m.

複数の横補強部材２は、複数の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）に差し渡すように複数（４本）設けられた第１の補強部材である。これら複数の横補強部材２は、４枚の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）の一面に接触するように設けられている。各々の横補強部材２は、図示するように長尺状の角棒であり、断面形状がＩ型形状である。このような横補強部材２は、４枚の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）の一面において、伝熱管の延在方向に所定間隔を空けて、また延在方向が伝熱管の延在方向に対して直交するように配置されている。 The plurality of lateral reinforcing members 2 are first reinforcing members provided so as to pass over the plurality of heat transfer tube panels 1A to 1D (heat transfer tube joints). These plurality of lateral reinforcing members 2 are provided so as to come into contact with one surface of the four heat transfer tube panels 1A to 1D (heat transfer tube joints). Each lateral reinforcing member 2 is a long square bar as shown in the figure, and has an I-shaped cross section. Such a lateral reinforcing member 2 has a predetermined interval in the extending direction of the heat transfer tube on one surface of the four heat transfer tube panels 1A to 1D (heat transfer tube joint), and the extension direction is the extension of the heat transfer tube. They are arranged so as to be orthogonal to the current direction.

また、この横補強部材２は、互いに隣り合う伝熱管パネル１Ａ〜１Ｄの突合部Ｐに符合する部分（部位）が着脱自在である。すなわち、図３に示すように長尺状の横補強部材２には、所定長さの着脱部２ａが部分的に設けられている。この着脱部２ａの伝熱管パネル１Ａ〜１Ｄに対する位置は、互いに隣り合う伝熱管パネル１Ａ〜１Ｄの突合部Ｐ（当接部）に一致している。 Further, in the lateral reinforcing member 2, a portion (part) corresponding to the abutting portion P of the heat transfer tube panels 1A to 1D adjacent to each other is detachable. That is, as shown in FIG. 3, the elongated lateral reinforcing member 2 is partially provided with a detachable portion 2a having a predetermined length. The position of the detachable portion 2a with respect to the heat transfer tube panels 1A to 1D coincides with the abutting portion P (contact portion) of the heat transfer tube panels 1A to 1D adjacent to each other.

複数の縦補強部材３は、このような複数の横補強部材２（第１の補強部材）に対して交差するように複数（８本）設けられた第２の補強部材である。これら複数の縦補強部材３は、複数（４本）の横補強部材２に対して４枚の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）の反対側に設けられた８本の補強部材である。 The plurality of vertical reinforcing members 3 are second reinforcing members provided so as to intersect the plurality of horizontal reinforcing members 2 (first reinforcing members) so as to intersect with each other. These plurality of vertical reinforcing members 3 are eight reinforcing members provided on the opposite sides of the four heat transfer tube panels 1A to 1D (heat transfer tube joints) with respect to the plurality of (four) horizontal reinforcing members 2. be.

各々の縦補強部材３は、図示するように長尺状の角棒であり、断面形状がＩ型形状である。このような縦補強部材３は、４本の横補強部材２を挟んた状態で４枚の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）に対向しており、伝熱管の配列方向に所定間隔を空けて、また延在方向が伝熱管の延在方向に対して平行になるように配置されている。 Each vertical reinforcing member 3 is a long square bar as shown in the figure, and has an I-shaped cross section. Such a vertical reinforcing member 3 faces the four heat transfer tube panels 1A to 1D (heat transfer tube joints) with the four horizontal reinforcing members 2 sandwiched therein, and is spaced at a predetermined interval in the arrangement direction of the heat transfer tubes. It is arranged so that the extending direction is parallel to the extending direction of the heat transfer tube.

ここで、各々の横補強部材２は、図示するように、両端部の位置が伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）の端部の位置と略同一に設定されている。これに対して、各々の縦補強部材３は、両端部の位置が伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）の端部の位置よりも外方に突出した位置に設定されており、また突出長さが一端と他端とで異なるように設定されている。すなわち、一端の突出長さは、他端突出長さよりも大幅に小さい。 Here, as shown in the figure, the positions of both ends of each lateral reinforcing member 2 are set to be substantially the same as the positions of the ends of the heat transfer tube panels 1A to 1D (heat transfer tube joint). On the other hand, the positions of both ends of each of the vertical reinforcing members 3 are set so as to protrude outward from the positions of the ends of the heat transfer tube panels 1A to 1D (heat transfer tube joint). The protrusion length is set to be different between one end and the other end. That is, the protruding length at one end is significantly smaller than the protruding length at the other end.

このような４本の横補強部材２及び８本の縦補強部材３は、相互に接合された一体の補強部材を構成している。すなわち、各々の横補強部材２及び縦補強部材３は、複数（４枚）の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）の一面に設けられ、当該伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）を補強するものである。このような４本の横補強部材２及び８本の縦補強部材３は、本発明の補強部材に相当する。 The four horizontal reinforcing members 2 and the eight vertical reinforcing members 3 constitute an integral reinforcing member joined to each other. That is, each of the horizontal reinforcing member 2 and the vertical reinforcing member 3 is provided on one surface of a plurality of (4 pieces) heat transfer tube panels 1A to 1D (heat transfer tube joint body), and the heat transfer tube panels 1A to 1D (heat transfer tube joint) are provided. It reinforces the body). Such four horizontal reinforcing members 2 and eight vertical reinforcing members 3 correspond to the reinforcing members of the present invention.

複数のローラ４は、８本の縦補強部材３の一端に設けられている。すなわち、各々のローラ４は、各縦補強部材３の両端のうち、同一側の一端にそれぞれ設けられている。すなわち、ローラ４は、合計で８個設けられている。このようなローラ４は、回転軸の延在方向が横補強部材２の延在方向と同一となるように各縦補強部材３の一端に装着されている。 The plurality of rollers 4 are provided at one end of the eight vertical reinforcing members 3. That is, each roller 4 is provided at one end on the same side of both ends of each vertical reinforcing member 3. That is, a total of eight rollers 4 are provided. Such a roller 4 is attached to one end of each vertical reinforcing member 3 so that the extending direction of the rotating shaft is the same as the extending direction of the lateral reinforcing member 2.

複数のチルタンク５は、８本の縦補強部材３の途中部位に離散的に設けられている。すなわち、各々のチルタンク５は、各縦補強部材３の両端間において所定間隔を空けて配置されている。１本の縦補強部材３に対するチルタンク５の個数は、例えば１１個（１１箇所）である。このようなチルタンク５は、回転軸の延在方向が横補強部材２の延在方向と同一つまり複数のローラ４の回転軸と同一となるように各縦補強部材３に装着されている。 The plurality of chill tanks 5 are discretely provided in the middle of the eight vertical reinforcing members 3. That is, each chill tank 5 is arranged at a predetermined interval between both ends of each vertical reinforcing member 3. The number of chill tanks 5 for one vertical reinforcing member 3 is, for example, 11 (11 locations). Such a chill tank 5 is attached to each vertical reinforcing member 3 so that the extending direction of the rotating shaft is the same as the extending direction of the lateral reinforcing member 2, that is, the same as the rotating shafts of the plurality of rollers 4.

複数の接続板６は、８本の縦補強部材３の他端に設けられた４枚の板状部材である。各々の接続板６は、各縦補強部材３の両端のうち、突出長さが大きい方の端部に互いに隣り合う一対の縦補強部材３間に差し渡すように設けられている。なお、このような吊板６の縦補強部材３に対する取付位置は、図示するように縦補強部材３の他端よりも若干内側（伝熱管パネル１Ａ〜１Ｄ側）である。 The plurality of connecting plates 6 are four plate-shaped members provided at the other ends of the eight vertical reinforcing members 3. Each connecting plate 6 is provided so as to pass between a pair of vertically reinforcing members 3 adjacent to each other at the end portion of each of the ends of each vertical reinforcing member 3 having a larger protrusion length. As shown in the figure, the mounting position of the suspension plate 6 with respect to the vertical reinforcing member 3 is slightly inside the other end of the vertical reinforcing member 3 (heat transfer tube panels 1A to 1D side).

複数の係合部材７は、４枚の接続板６の中間位置に設けられている。すなわち、これら係合部材７は、接続板６の枚数（４枚）と同様な数つまり４個設けられている。各係合部材７は、クレーン（搬送装置）のフックをワイヤロープやシャックルを介して係合させるための係合穴を備えている。本実施形態に係る伝熱管パネル中間構造体Ａは、係合部材７にクレーンのフックが係合することによって吊上げられる。なお、上述した複数の接続板６及び係合部材７は、本発明の吊具を構成している。 The plurality of engaging members 7 are provided at intermediate positions of the four connecting plates 6. That is, the number of these engaging members 7 is the same as the number of connecting plates 6 (4), that is, four are provided. Each engaging member 7 is provided with an engaging hole for engaging the hook of the crane (transport device) via a wire rope or a shackle. The heat transfer tube panel intermediate structure A according to the present embodiment is lifted by engaging the hook of the crane with the engaging member 7. The plurality of connecting plates 6 and engaging members 7 described above constitute the hanger of the present invention.

複数の連結部材８は、伝熱管パネル１Ａ〜１Ｄの枚数（４枚）に対応して４つ設けられており、一端が係合部材７に係合し、他端が４枚の伝熱管パネル１Ａ〜１Ｄの端部に係合する。４枚の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）は、連結部材８を介して係合部材７に連結されているので、４本の横補強部材２及び８本の縦補強部材３からなる補強部材と一体にクレーンによって吊上げられる。 Four of the plurality of connecting members 8 are provided corresponding to the number of heat transfer tube panels 1A to 1D (4 sheets), one end of which is engaged with the engaging member 7 and the other end of which is four heat transfer tube panels. Engage with the ends of 1A-1D. Since the four heat transfer tube panels 1A to 1D (heat transfer tube joints) are connected to the engaging member 7 via the connecting member 8, the four horizontal reinforcing members 2 and the eight vertical reinforcing members 3 are used. It is lifted by a crane integrally with the reinforcing member.

次に、本実施形態に係る伝熱管パネル中間構造体Ａを用いたボイラ建設方法について、図４をも参照して説明する。 Next, a boiler construction method using the heat transfer tube panel intermediate structure A according to the present embodiment will be described with reference to FIG. 4.

伝熱管パネル中間構造体Ａは、図４に示すように、ボイラ建設用地において４枚の伝熱管パネル１Ａ〜１Ｄ及び４本の横補強部材２及び８本の縦補強部材３からなる補強部材を地上で仮組することにより仮組構造体Ａ０を組み立てる（仮組工程）。 As shown in FIG. 4, the heat transfer tube panel intermediate structure A includes four heat transfer tube panels 1A to 1D, four horizontal reinforcing members 2 and eight vertical reinforcing members 3 at the boiler construction site. The temporary assembly structure A0 is assembled by temporarily assembling on the ground (temporary assembly process).

ボイラ建設用地は、１辺の長さが２０ｍにもなる比較的大型な補強部材を組み立てるのに十分な広さを有している。すなわち、仮組工程では、８本の縦補強部材３が図２に示したようにボイラ建設用地の地表に載置されるが、この際に８本の縦補強部材３は複数のローラ４及び複数のチルタンク５が地表と対峙する姿勢で地表に載置される。 The boiler construction site is large enough to assemble a relatively large reinforcing member with a side length of 20 m. That is, in the temporary assembly process, the eight vertical reinforcing members 3 are placed on the ground surface of the boiler construction site as shown in FIG. 2, and at this time, the eight vertical reinforcing members 3 are the plurality of rollers 4 and A plurality of chill tanks 5 are placed on the ground surface in a posture facing the ground surface.

そして、このような８本の縦補強部材３の上に４本の横補強部材２が図２に示したように井桁状に配置され、交差部において８本の縦補強部材３と接合される。また、８本の縦補強部材３には、係合部材７が予め固定された４本の接続板６が図２に示したように接合される。この結果、ボイラ建設用地の地表には、横倒し状態の補強部材が一体として組み上げられる。 Then, four horizontal reinforcing members 2 are arranged in a grid shape on the eight vertical reinforcing members 3 as shown in FIG. 2, and are joined to the eight vertical reinforcing members 3 at the intersection. .. Further, four connecting plates 6 to which the engaging member 7 is fixed in advance are joined to the eight vertical reinforcing members 3 as shown in FIG. As a result, reinforcing members in a sideways state are integrally assembled on the ground surface of the boiler construction site.

そして、この補強部材上つまり４本の横補強部材２上には、４枚の伝熱管パネル１Ａ〜１Ｄが図２に示したように配置される。すなわち、４枚の伝熱管パネル１Ａ〜１Ｄは、お互いに隣接する状態、かつ、一方の面（下面）の一部が４本の横補強部材２の上面に接触する状態で４本の横補強部材２上に載置される。 Then, four heat transfer tube panels 1A to 1D are arranged on the reinforcing member, that is, on the four lateral reinforcing members 2, as shown in FIG. That is, the four heat transfer tube panels 1A to 1D are laterally reinforced in a state of being adjacent to each other and in a state where a part of one surface (lower surface) is in contact with the upper surface of the four lateral reinforcing members 2. It is placed on the member 2.

この状態では、４枚の伝熱管パネル１Ａ〜１Ｄの上面は完全に開放されているが、４枚の伝熱管パネル１Ａ〜１Ｄの下面は、横補強部材２が部分的に接触した状態である。このような４枚の伝熱管パネル１Ａ〜１Ｄに対して、図３に示すように伝熱管パネル１Ａと伝熱管パネル１Ｂとの突合部Ｐは、矢印Ｒ１で示すように上面側から溶接接合される。また、図示しないが、伝熱管パネル１Ｂと伝熱管パネル１Ｃとの突合部及び伝熱管パネル１Ｃと伝熱管パネル１Ｄとの突合部は、上面側から溶接接合される。 In this state, the upper surfaces of the four heat transfer tube panels 1A to 1D are completely open, but the lower surfaces of the four heat transfer tube panels 1A to 1D are in a state where the lateral reinforcing members 2 are partially in contact with each other. .. As shown in FIG. 3, the abutting portion P between the heat transfer tube panel 1A and the heat transfer tube panel 1B is welded to the four heat transfer tube panels 1A to 1D from the upper surface side as shown by an arrow R1. To. Although not shown, the butt portion between the heat transfer tube panel 1B and the heat transfer tube panel 1C and the butt portion between the heat transfer tube panel 1C and the heat transfer tube panel 1D are welded and joined from the upper surface side.

一方、４枚の伝熱管パネル１Ａ〜１Ｄの下面については、着脱部２ａが取り外されることによって解放される。そして、図３に示すように、伝熱管パネル１Ａと伝熱管パネル１Ｂとの突合部Ｐは、矢印Ｒ２で示すように下面側から溶接接合される。そして、伝熱管パネル１Ｂと伝熱管パネル１Ｃとの突合部及び伝熱管パネル１Ｃと伝熱管パネル１Ｄとの突合部についても、同様にして下面側から溶接接合される。 On the other hand, the lower surfaces of the four heat transfer tube panels 1A to 1D are released by removing the detachable portion 2a. Then, as shown in FIG. 3, the butt portion P between the heat transfer tube panel 1A and the heat transfer tube panel 1B is welded and joined from the lower surface side as shown by an arrow R2. Then, the butt portion between the heat transfer tube panel 1B and the heat transfer tube panel 1C and the butt portion between the heat transfer tube panel 1C and the heat transfer tube panel 1D are also welded and joined from the lower surface side in the same manner.

すなわち、本実施形態では、横補強部材２に着脱部２ａを設けることにより、４枚の伝熱管パネル１Ａ〜１Ｄにおける各突合部の下面側を開放可能にしている。そして、この結果として、４枚の伝熱管パネル１Ａ〜１Ｄにおける各突合部の両面溶接を可能としている。このような本実施形態によれば、各伝熱管パネル１Ａ〜１Ｄの突合部について、より確かな接合を実現できる。 That is, in the present embodiment, the lateral reinforcing member 2 is provided with the detachable portion 2a so that the lower surface side of each abutting portion in the four heat transfer tube panels 1A to 1D can be opened. As a result, double-sided welding of each butt portion in the four heat transfer tube panels 1A to 1D is possible. According to such an embodiment, more reliable joining can be realized for the butted portions of the heat transfer tube panels 1A to 1D.

また、このような各伝熱管パネル１Ａ〜１Ｄの突合部の溶接作業では、補強部材が定盤として機能するので、一対の伝熱管１ａの延在方向の各所において良好な突合せ状態を実現することができる。したがって、一対の伝熱管１ａを延在方向の全領域に亘って良好な突合せ溶接を実現することができる。 Further, in the welding work of the butt joints of the heat transfer tube panels 1A to 1D, the reinforcing member functions as a surface plate, so that a good butt state can be realized in various places in the extending direction of the pair of heat transfer tubes 1a. Can be done. Therefore, it is possible to realize good butt welding over the entire region in the extending direction of the pair of heat transfer tubes 1a.

この仮組工程では、さらに４枚の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）と係合部材７との間に連結部材８を設ける。この結果、４枚の伝熱管パネル１Ａ〜１Ｄ（伝熱管接合体）は、連結部材８を介して係合部材７に連結される。以上によって仮組構造体Ａ０が完成する。 In this temporary assembly process, a connecting member 8 is further provided between the four heat transfer tube panels 1A to 1D (heat transfer tube joints) and the engaging member 7. As a result, the four heat transfer tube panels 1A to 1D (heat transfer tube joints) are connected to the engaging member 7 via the connecting member 8. With the above, the temporary assembly structure A0 is completed.

このような仮組工程が完了すると、図４に示すように仮組構造体Ａ０を複数の仮組ユニットＡ１、Ａ２に分割する（分割工程）。この分割工程は、仮組構造体Ａ０をボイラ架構Ｋ内に移動させることが困難なためである。すなわち、仮組ユニットＡ１、Ａ２は、ボイラ架構Ｋへの移動が可能な大きさを有する。本実施形態では、一例として仮組構造体Ａ０を２つの仮組ユニットＡ１、Ａ２に分割する。 When such a temporary assembly step is completed, the temporary assembly structure A0 is divided into a plurality of temporary assembly units A1 and A2 as shown in FIG. 4 (division step). This division step is because it is difficult to move the temporary assembly structure A0 into the boiler frame K. That is, the temporary assembly units A1 and A2 have a size that allows them to move to the boiler frame K. In the present embodiment, as an example, the temporary assembly structure A0 is divided into two temporary assembly units A1 and A2.

ここで、ボイラ建設用地の地表と接している８本の縦補強部材３には複数のチルタンク５が設けられているので、分割工程における仮組構造体Ａ０あるいは／及び仮組ユニットＡ１、Ａ２の地表上での移動が容易である。 Here, since a plurality of chill tanks 5 are provided on the eight vertical reinforcing members 3 in contact with the ground surface of the boiler construction site, the temporary assembly structure A0 or / and the temporary assembly units A1 and A2 in the division step are provided. Easy to move on the surface of the earth.

本実施形態に係るボイラ建設方法では、続いて上記仮組ユニットＡ１、Ａ２をボイラ架構Ｋ内に搬送して本組する（本組工程）。すなわち、この本組工程では、２つの仮組ユニットＡ１、Ａ２を連結することによって、上述した伝熱管パネル中間構造体Ａを最終的に完成させる。この本組工程においても、８本の縦補強部材３には複数のチルタンク５が設けられているので、仮組ユニットＡ１、Ａ２あるいは／及び伝熱管パネル中間構造体Ａの地表上での移動が容易である。 In the boiler construction method according to the present embodiment, the temporary assembly units A1 and A2 are subsequently transported into the boiler frame K for main assembly (main assembly process). That is, in this main assembly process, the heat transfer tube panel intermediate structure A described above is finally completed by connecting the two temporary assembly units A1 and A2. In this main assembly process as well, since the eight vertical reinforcing members 3 are provided with a plurality of chill tanks 5, the temporary assembly units A1, A2 and / and the heat transfer tube panel intermediate structure A can be moved on the ground surface. It's easy.

上述した仮組工程、分割工程及び本組工程は、本発明の第１工程に相当する。すなわち、この第１工程は、伝熱管パネル中間構造体Ａを最終的に組み立てる工程である。本実施形態に係るボイラ建設方法では、第１工程の後工程として、伝熱管パネル中間構造体Ａをクレーンで吊上げることによって４枚の伝熱管パネル１Ａ〜１Ｄを所定位置に敷設する（第２工程）。 The temporary assembly process, the division process, and the main assembly process described above correspond to the first process of the present invention. That is, this first step is a step of finally assembling the heat transfer tube panel intermediate structure A. In the boiler construction method according to the present embodiment, as a post-process of the first step, four heat transfer tube panels 1A to 1D are laid at predetermined positions by lifting the heat transfer tube panel intermediate structure A with a crane (second). Process).

この第２工程では、伝熱管パネル中間構造体Ａをクレーンで吊上げてボイラ架構Ｋから吊り下げるが、この吊上げは、クレーンのフックが係合した係合部材７が上方に引き上げられることによって行われる。すなわち、伝熱管パネル中間構造体Ａは、複数の係合部材７が設けられている側がクレーンによって上方に引き上げられることによって平置き状態から起こされて縦置き状態となる。 In this second step, the heat transfer tube panel intermediate structure A is lifted by a crane and suspended from the boiler frame K, and this lifting is performed by pulling up the engaging member 7 with which the hook of the crane is engaged. .. That is, the heat transfer tube panel intermediate structure A is raised from the flat placement state to the vertical placement state by pulling up the side on which the plurality of engagement members 7 are provided by the crane.

そして、このような伝熱管パネル中間構造体Ａの立て起こしは、伝熱管パネル中間構造体Ａにおいて複数の係合部材７の反対側に一列に設けられている複数のローラ４を基点として行われる。すなわち、本実施形態によれば、配列方向を回転軸の軸心とすると共に回転自在な複数のローラ４を基点として伝熱管パネル中間構造体Ａを立て起こすので、伝熱管パネル中間構造体Ａの横姿勢から縦姿勢への姿勢変化が容易である。なお、伝熱管パネル中間構造体Ａを立て起こした後，周囲の構造物（バックスティ等）と干渉する部材が伝熱管パネル中間構造体Ａから取外される。 Then, such raising of the heat transfer tube panel intermediate structure A is performed with the plurality of rollers 4 provided in a row on the opposite side of the plurality of engaging members 7 in the heat transfer tube panel intermediate structure A as a base point. .. That is, according to the present embodiment, the heat transfer tube panel intermediate structure A is erected with the arrangement direction as the axis of the rotation axis and the rotatable plurality of rollers 4 as the base points. It is easy to change the posture from the horizontal posture to the vertical posture. After the heat transfer tube panel intermediate structure A is erected, a member that interferes with the surrounding structure (back stay or the like) is removed from the heat transfer tube panel intermediate structure A.

このような本実施形態によれば、伝熱管パネル中間構造体Ａをクレーンで吊上げることによって４枚の伝熱管パネル１Ａ〜１Ｄを敷設するので、従来のように伝熱管パネルを１枚づつクレーンで吊上げて敷設する場合に比較して、伝熱管パネル１Ａ〜１Ｄの吊上げ回数及び高所での溶接回数を削減することが可能である。 According to this embodiment, four heat transfer tube panels 1A to 1D are laid by lifting the heat transfer tube panel intermediate structure A with a crane, so that the heat transfer tube panels are one by one as in the conventional crane. It is possible to reduce the number of times the heat transfer tube panels 1A to 1D are lifted and the number of times they are welded at a high place, as compared with the case where the heat transfer tube panels 1A to 1D are lifted and laid.

なお、本発明は上記実施形態に限定されるものではなく、例えば以下のような変形例が考えられる。
（１）上記実施形態では、４枚の伝熱管パネル１Ａ〜１Ｄを備える伝熱管パネル中間構造体Ａを採用したが、本発明はこれに限定されない。伝熱管パネル中間構造体を構成する伝熱管パネルの枚数は、２枚以上であれば期待する効果を得ることができる。 The present invention is not limited to the above embodiment, and for example, the following modifications can be considered.
(1) In the above embodiment, the heat transfer tube panel intermediate structure A including the four heat transfer tube panels 1A to 1D is adopted, but the present invention is not limited thereto. If the number of heat transfer tube panels constituting the heat transfer tube panel intermediate structure is two or more, the expected effect can be obtained.

（２）上記実施形態では、４本の横補強部材２及び８本の縦補強部材３からなる補強部材を採用したが、本発明はこれに限定されない。補強部材の構造については種々の変形例が考えられる。すなわち、補強部材は、クレーンで吊り下げる際に過度の機械的ストレスが伝熱管パネル１Ａ〜１Ｄに作用しないようにできるものであれば良い。 (2) In the above embodiment, a reinforcing member composed of four horizontal reinforcing members 2 and eight vertical reinforcing members 3 is adopted, but the present invention is not limited thereto. Various modifications can be considered for the structure of the reinforcing member. That is, the reinforcing member may be any as long as it can prevent excessive mechanical stress from acting on the heat transfer tube panels 1A to 1D when suspended by a crane.

（３）上記実施形態では、第１工程を仮組工程、分割工程及び本組工程から構成したが、本発明はこれに限定されない。ボイラ建設用地の大きさ等にも依るが、仮組を省略して伝熱管パネル中間構造体Ａを直接本組してもよい。 (3) In the above embodiment, the first step is composed of a temporary assembly step, a division step, and a main assembly step, but the present invention is not limited thereto. Although it depends on the size of the boiler construction site and the like, the temporary assembly may be omitted and the heat transfer tube panel intermediate structure A may be directly assembled.

（４）上記実施形態では、搬送装置としてクレーンを用いたが、本発明はこれに限定されない。搬送装置として、クレーンに代えて例えばウインチやジャッキ等を用いてもよい。 (4) In the above embodiment, a crane is used as the transport device, but the present invention is not limited to this. As the transport device, for example, a winch, a jack, or the like may be used instead of the crane.

Ａ 伝熱管パネル中間構造体
Ｈ ボイラ本体
Ｋ ボイラ架構
Ｐ 突合部
１Ａ〜１Ｄ 伝熱管パネル
２ 横補強部材（第１の補強部材）
２ａ 着脱部
３ 縦補強部材（第２の補強部材）
４ ローラ
５ チルタンク
６ 接続板
７ 係合部材
８ 連結部材

A Heat transfer tube panel intermediate structure H Boiler body K Boiler frame P Butt part 1A to 1D Heat transfer tube panel 2 Horizontal reinforcing member (first reinforcing member)
2a Detachable part 3 Vertical reinforcement member (second reinforcement member)
4 Roller 5 Chill tank 6 Connection plate 7 Engagement member 8 Connecting member

Claims (7)

隣接配置された複数の伝熱管パネルと、
前記複数の伝熱管パネルの一面に設けられた補強部材と、
前記複数の伝熱管パネルと前記補強部材とを連結させる連結部材と
を備えることを特徴とする伝熱管パネル中間構造体。 With multiple heat transfer tube panels placed next to each other,
Reinforcing members provided on one surface of the plurality of heat transfer tube panels and
A heat transfer tube panel intermediate structure comprising a connecting member for connecting the plurality of heat transfer tube panels and the reinforcing member. 前記補強部材において、互いに隣り合う前記伝熱管パネルの突合部に符合する部分は着脱自在であることを特徴とする請求項１に記載の伝熱管パネル中間構造体。 The heat transfer tube panel intermediate structure according to claim 1, wherein in the reinforcing member, a portion corresponding to the abutting portion of the heat transfer tube panels adjacent to each other is removable. 前記補強部材は、
前記複数の伝熱管パネルに差し渡すように複数設けられた第１の補強部材と、
該第１の補強部材に対して交差するように複数設けられた第２の補強部材と
を備えることを特徴とする請求項１または２に記載の伝熱管パネル中間構造体。 The reinforcing member is
A plurality of first reinforcing members provided so as to be passed to the plurality of heat transfer tube panels, and a plurality of first reinforcing members.
The heat transfer tube panel intermediate structure according to claim 1 or 2, further comprising a second reinforcing member provided so as to intersect with the first reinforcing member. 前記第１の補強部材は、前記複数の伝熱管パネルに接触するように設けられ、
前記第２の補強部材は、前記第１の補強部材に対して前記複数の伝熱管パネルの反対側に設けられることを特徴とする請求項３に記載の伝熱管パネル中間構造体。 The first reinforcing member is provided so as to be in contact with the plurality of heat transfer tube panels.
The heat transfer tube panel intermediate structure according to claim 3, wherein the second reinforcing member is provided on the opposite side of the plurality of heat transfer tube panels with respect to the first reinforcing member. 前記補強部材の一端には吊具が設けられることを特徴とする請求項１〜４のいずれか一項に記載の伝熱管パネル中間構造体。 The heat transfer tube panel intermediate structure according to any one of claims 1 to 4, wherein a hanging tool is provided at one end of the reinforcing member. 請求項１〜５のいずれか一項に記載の伝熱管パネル中間構造体を組み立てる第１工程と、
前記伝熱管パネル中間構造体を搬送装置で吊上げて敷設する第２工程と
を有することを特徴とするボイラ建設方法。 The first step of assembling the heat transfer tube panel intermediate structure according to any one of claims 1 to 5.
A boiler construction method comprising a second step of lifting and laying the heat transfer tube panel intermediate structure by a transport device. 前記第１工程は、
前記伝熱管パネル及び前記補強部材を地上で仮組することにより仮組構造体を組み立てる仮組工程と、
前記仮組構造体を複数の仮組ユニットに分割する分割工程と、
前記仮組ユニットを架構内に搬送して本組する本組工程と
を有することを特徴とする請求項６に記載のボイラ建設方法。
The first step is
A temporary assembly process for assembling a temporary assembly structure by temporarily assembling the heat transfer tube panel and the reinforcing member on the ground.
A division step of dividing the temporary assembly structure into a plurality of temporary assembly units, and
The boiler construction method according to claim 6, further comprising a main assembly process of transporting the temporary assembly unit into a frame and main assembly.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5981907U (en) * 1982-11-17 1984-06-02 バブコツク日立株式会社 panel support device
JPS60164103A (en) * 1984-02-07 1985-08-27 バブコツク日立株式会社 Method of assembling inclined water-cooling wall
JPS60171305A (en) * 1984-02-15 1985-09-04 バブコツク日立株式会社 Block type back stay
JPH0221407U (en) * 1988-07-21 1990-02-13
JP2007315732A (en) * 2006-05-29 2007-12-06 Hitachi Plant Technologies Ltd Installation method of boiler furnace wall
JP2010101542A (en) * 2008-10-23 2010-05-06 Mitsubishi Heavy Ind Ltd Reinforcement structure for furnace bottom tube

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5981907U (en) * 1982-11-17 1984-06-02 バブコツク日立株式会社 panel support device
JPS60164103A (en) * 1984-02-07 1985-08-27 バブコツク日立株式会社 Method of assembling inclined water-cooling wall
JPS60171305A (en) * 1984-02-15 1985-09-04 バブコツク日立株式会社 Block type back stay
JPH0221407U (en) * 1988-07-21 1990-02-13
JP2007315732A (en) * 2006-05-29 2007-12-06 Hitachi Plant Technologies Ltd Installation method of boiler furnace wall
JP2010101542A (en) * 2008-10-23 2010-05-06 Mitsubishi Heavy Ind Ltd Reinforcement structure for furnace bottom tube

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