JPH0431563A - Platform for inspection for inside boiler furnace - Google Patents
Platform for inspection for inside boiler furnaceInfo
- Publication number
- JPH0431563A JPH0431563A JP13550490A JP13550490A JPH0431563A JP H0431563 A JPH0431563 A JP H0431563A JP 13550490 A JP13550490 A JP 13550490A JP 13550490 A JP13550490 A JP 13550490A JP H0431563 A JPH0431563 A JP H0431563A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- boiler
- scaffold
- scaffolding
- furnace wall
- 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
- 238000007689 inspection Methods 0.000 title claims description 24
- 230000002265 prevention Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Movable Scaffolding (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ボイラ火炉内の点検用足場、特に発電用大型
ボイラの火炉に好適な点検用足場に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inspection scaffold in a boiler furnace, particularly an inspection scaffold suitable for a furnace of a large boiler for power generation.
発電用ボイラはボイラチューブの腐食等を点検するため
に、電気事業法で定期検査が義務づけられている。この
定期検査は、ボイラの運転を停止し、ボイラの火炉内に
足場を構築して行われる。Power generation boilers are required to undergo regular inspections under the Electricity Business Act to check for corrosion of the boiler tubes. This periodic inspection is carried out by stopping the boiler and constructing a scaffold inside the boiler's furnace.
従来の多くの足場は、建築用足場と同様に、垂直な柱材
、この柱材を補強する筋かい、柱材に固定された水平材
、この水平材に載置固定された足場板等からなっている
（以下、この足場を組み上げ弐足場と称する）。組み上
げ弐足場のすべての構成部品（前記の柱材、筋かい、水
平材および足場板のほかに、手摺り、布、根がらみ、階
段、緊結金具、ジヨイント等が含まれる）は、火炉の底
部に設けられたマンホールから炉内に搬入され、炉内で
組み立てられる。足場を組み立てる場合には先ず、炉内
において火炉底部に足場の基礎が形成される（火炉底部
を養生する）。この基礎は、足場の全荷重がかかるので
、きわめて頑丈に作る必要がある。基礎が出来上がると
、その上に１階から最上階まで足場の各ステージが順次
組み上げられる。Many conventional scaffolds, like architectural scaffolding, are made up of vertical pillars, braces that reinforce these pillars, horizontal members fixed to the pillars, scaffolding boards placed and fixed on the horizontal members, etc. (hereinafter, this scaffold will be referred to as the erected second scaffold). All components of the assembled second scaffold (in addition to the above-mentioned pillars, braces, horizontal members, and scaffolding boards, include handrails, cloth, roots, stairs, fastening fittings, joints, etc.) are located at the bottom of the furnace. They are carried into the furnace through a manhole installed in the furnace and assembled inside the furnace. When assembling a scaffold, first, a foundation for the scaffold is formed at the bottom of the furnace inside the furnace (the bottom of the furnace is cured). This foundation must be extremely strong, as it will bear the full weight of the scaffolding. Once the foundation is completed, each stage of scaffolding will be erected on top of it, from the first floor to the top floor.
更に、ジヤツキアップ式足場と称されるものが最近体々
に使用されるようになってきた。この足場の場合には、
炉底の基礎の上にジヤツキを設置し、このジヤツキ上に
先ず最上階の足場ステージを組み立ててジヤツキアップ
する。そして、その下の階の足場ステージを組み立てて
ジヤツキアップし、これを順次繰り返すことにより、足
場を構築する。Furthermore, what is called a jack-up scaffold has recently come into widespread use. In the case of this scaffold,
A jack is installed on the foundation at the bottom of the hearth, and the scaffolding stage for the top floor is first assembled on top of this jack to raise the jack. Then, by assembling and jacking up the scaffolding stage on the floor below, and repeating this process one after another, the scaffolding is constructed.
上記の組み上げ式足場およびジヤツキアップ式足場の場
合には、足場を構成する部品すべてを火炉底部のマンホ
ールから炉内に搬入しなければならない。また、火炉内
で構成部品全部を組み立てなければならない。その結果
、部品の搬入および組み立てに非常に時間がかかる。In the case of the above-mentioned erected scaffolding and jack-up scaffolding, all the parts that make up the scaffolding must be carried into the furnace through the manhole at the bottom of the furnace. Additionally, all components must be assembled inside the furnace. As a result, loading and assembling parts is very time consuming.
更に、炉内の作業環境（特に温度）が整ってからでない
と、足場の組み立て作業を開始することができない。ま
た、足場全体が完成しないと、炉内の点検作業を行うこ
とができない。Furthermore, the work of assembling the scaffolding cannot be started until the working environment (particularly the temperature) in the furnace has been adjusted. In addition, inspection work inside the furnace cannot be carried out until the entire scaffolding is completed.
従って、足場の組み立て・解体に長時間を必要とし、ボ
イラチューブ点検のための期間のうち、足場組み立て・
解体が大部分を占める。現在、電力需要の増大に伴い、
定期検査時のボイラの停止時間の短縮、特に火炉点検用
足場の組み立て・解体に要する時間の短縮が望まれてい
る。Therefore, it takes a long time to assemble and dismantle the scaffolding, and during the boiler tube inspection period, the scaffolding and
Demolition accounts for the majority. Currently, with the increase in electricity demand,
It is desired to reduce the time required for boilers to stop during periodic inspections, and in particular to reduce the time required to assemble and dismantle scaffolds for furnace inspections.
前記の足場構成部品の搬入および組み立てに多大の作業
量を必要とするほか、足場の全荷重を支えるしっかりし
た基礎を作る必要があるので、この基礎にも多大の作業
量を必要とする。従って、従来の足場は労力コストが高
い。In addition to requiring a large amount of work to carry in and assemble the scaffold components, it is also necessary to create a solid foundation that can support the entire load of the scaffold, so this foundation also requires a large amount of work. Therefore, conventional scaffolding has high labor costs.
更に、足場板を支えるために柱材および水平材が必須で
あり、足場全体が構造物となっているので、補強用筋か
いが必要である。また、柱材、水平材および筋かいを連
結するための多量の緊結金具が必要である。従って、部
品の数が多く、足場自体のコストが高い。Furthermore, pillars and horizontal members are essential to support the scaffolding boards, and since the entire scaffold is a structure, reinforcing braces are necessary. Additionally, a large amount of fastening fittings are required to connect the columns, horizontal members, and braces. Therefore, the number of parts is large and the cost of the scaffold itself is high.
更に、ジヤツキアップ式足場は、制御装置、ジヤツキ、
モータ等を必要とするので、−層コストが高い。Furthermore, the jack-up type scaffolding has a control device, jacks,
Since a motor and the like are required, the -layer cost is high.
そこで、本発明は、比較的に短時間で容易に組み立て・
解体可能であり、かつ部品数が少なく低コストのボイラ
火炉内の点検用足場を提供することを目的とするもので
ある。Therefore, the present invention provides easy assembly and assembly in a relatively short time.
The object of the present invention is to provide a scaffold for inspection inside a boiler furnace that can be disassembled, has a small number of parts, and is low cost.
この目的は、火炉の炉壁の外側から炉壁の貫通穴を通っ
て炉内に挿入され、かつ炉壁あるいは外部支持部材に固
定された多数の腕木と、炉内で腕木に保持された足場板
とを備えていることによって達成される。ここで、外部
支持部材とは、炉壁の変形を抑えるために炉壁外面に取
付けられた補強部材、または炉壁の周囲に設けられたボ
イラ架構を意味する。This purpose consists of a number of arms that are inserted into the furnace from the outside of the furnace wall through a through hole in the furnace wall and are fixed to the furnace wall or external support members, and a scaffold that is held by the arms inside the furnace. This is achieved by having a board. Here, the external support member means a reinforcing member attached to the outer surface of the furnace wall to suppress deformation of the furnace wall, or a boiler frame provided around the furnace wall.
この場合、火炉の炉壁が実質的に多数のボイラチューブ
からなり、このボイラチューブを湾曲させてボイラチュ
ーブの間に貫通穴が形成され、腕木がボイラチューブに
溶接されたホルダーに固定されていることが望ましい。In this case, the furnace wall of the furnace essentially consists of a large number of boiler tubes, the boiler tubes are curved to form through holes between the boiler tubes, and the arms are fixed to holders welded to the boiler tubes. This is desirable.
更に、炉内で腕木に墜落防止部材が取付けられているこ
とが望ましい。Furthermore, it is desirable that a fall prevention member be attached to the arm in the furnace.
本発明によるボイラ火炉内の点検用足場は、腕木を炉の
外側から炉壁の貫通穴を通って炉内に挿入し、かつ炉壁
あるいは外部支持部材に固定し、そして炉内で足場板を
腕木に載せることにより、構築される。In the inspection scaffolding in a boiler furnace according to the present invention, the arms are inserted into the furnace from the outside of the furnace through a through hole in the furnace wall, fixed to the furnace wall or an external support member, and then the scaffolding board is installed inside the furnace. It is constructed by placing it on a support arm.
［実施例］
次に、図に示した実施例に基づいて本発明の詳細な説明
する。[Example] Next, the present invention will be described in detail based on the example shown in the drawings.
第１図は、発電用放射ボイラの火炉１の一部と、この火
炉内に構築された本発明の実施例による点検用足場２を
示している。なお、図を見やすくするために、火炉１は
炉壁の一部だけが示してあり、その他の部品（例えばバ
ーナー）は省略しである。FIG. 1 shows a part of a furnace 1 of a power generation radiant boiler and an inspection scaffold 2 according to an embodiment of the present invention constructed in this furnace. In order to make the figure easier to read, only a part of the furnace wall of the furnace 1 is shown, and other parts (for example, a burner) are omitted.
更に、足場２は二つの足場ステージ２ａ、２ｂだけが示
しである。Furthermore, only two scaffold stages 2a, 2b of the scaffold 2 are shown.
火炉１は水平断面がほぼ長方形の形をしており、その炉
壁は実質的に、密に配列されたボイラチューブ３からな
っている。このボイラチューブ３は炉壁の強度部材を形
成し、図示していない上端でボイラ架構に吊り下げられ
、そして下端で管寄せ４に接続されている。ボイラチュ
ーブ３の外側は保温材５で被覆され、この保温材５は更
にケーシング６で被覆されている。このケーシング６は
炉壁の強度部材を形成するものではなく、単なる外装材
（被覆材）である。The furnace 1 has a substantially rectangular horizontal cross-section, and its furnace walls consist essentially of boiler tubes 3 arranged closely together. The boiler tube 3 forms a strength member of the furnace wall, is suspended from the boiler frame at its upper end (not shown), and is connected to the header 4 at its lower end. The outside of the boiler tube 3 is covered with a heat insulating material 5, and this heat insulating material 5 is further covered with a casing 6. This casing 6 does not form a strength member of the furnace wall, but is merely an exterior material (covering material).
炉内には、足場２が構築されている。図示では二つの炉
壁内面にそれぞれ二つの足場ステージ２ａ、２ｂが構築
されているが、実際には多数のステージが足場ステージ
２ａ、２ｂと同様にすべての炉壁内面に構築される。こ
の足場ステージ２ａ。A scaffold 2 is constructed inside the furnace. In the illustration, two scaffold stages 2a and 2b are constructed on each of the inner surfaces of the two furnace walls, but in reality, a large number of stages are constructed on the inner surfaces of all the furnace walls as well as the scaffold stages 2a and 2b. This scaffolding stage 2a.
２ｂは、水平な腕木７と、この腕木７に載置された足場
板８と、腕木７に取付けられた墜落防止部材９を備えて
いる。2b includes a horizontal arm 7, a scaffold board 8 placed on the arm 7, and a fall prevention member 9 attached to the arm 7.
腕木７は第２，３図に示すように、炉壁の外側から炉壁
に形成された貫通穴を通って炉内に挿入され、固定され
ている。第２図は腕木７の挿入固定状態を示す拡大断面
図、第３図は第２図の右側面図である。炉壁貫通穴を形
成するために、２本のボイラーチューブ３ａ、３ｂが腕
木７挿入個所の付近において曲げられている。すなわち
、第２図に示すように、ボイラーチューブ３は先ず炉壁
外側の方へ（第２図において左側へ）曲げられ、そして
第３図に示すように側方へ（第３図において左右へ）曲
げられている。このボイラチューブ３の湾曲部分の外側
範囲においてボイラチューブ３の外面には、腕木７を固
定保持するためのホルダー１０が溶接されている。この
ホルダー１０は中央の管状部分１０ａと、この管状部分
１０ａの一端に設けられたフランジ状部分１０ｂと、管
状部分１０ａの他端に設けられた長方形の板状部分１０
ｃと、この板状部分１０ｃの外周に設けられた突出部分
１０ｄとからなり、この突出部分１０ｄが複数のボイラ
チューブ３に溶接されている（図示例では第２図に示す
ように６本のボイラチューブ３に溶接されている）。ホ
ルダー１０のフランジ状部分１０ｂには、挿入された腕
木７のフランジ状部分７ａがボルト・ナツト１１で固定
されている。ホルダー１０の部分１０ｃ、１０ｄとボイ
ラチューブ３の湾曲部分との間の隙間には、キャスタブ
ル耐火材１２が充填されている。As shown in FIGS. 2 and 3, the arm 7 is inserted into the furnace from the outside of the furnace wall through a through hole formed in the furnace wall, and is fixed therein. FIG. 2 is an enlarged sectional view showing the arm 7 inserted and fixed, and FIG. 3 is a right side view of FIG. 2. In order to form a through hole in the furnace wall, two boiler tubes 3a and 3b are bent near the insertion point of arm 7. That is, as shown in FIG. 2, the boiler tube 3 is first bent toward the outside of the furnace wall (to the left in FIG. 2), and then to the side as shown in FIG. 3 (to the left and right in FIG. 3). ) is bent. A holder 10 for fixing and holding the arm 7 is welded to the outer surface of the boiler tube 3 in the outer range of the curved portion of the boiler tube 3. This holder 10 includes a central tubular portion 10a, a flange portion 10b provided at one end of the tubular portion 10a, and a rectangular plate portion 10 provided at the other end of the tubular portion 10a.
c and a protruding part 10d provided on the outer periphery of this plate-like part 10c, and this protruding part 10d is welded to a plurality of boiler tubes 3 (in the illustrated example, six boiler tubes are welded as shown in FIG. (welded to boiler tube 3). The flange-like portion 7a of the inserted arm 7 is fixed to the flange-like portion 10b of the holder 10 with bolts and nuts 11. A gap between the portions 10c and 10d of the holder 10 and the curved portion of the boiler tube 3 is filled with a castable refractory material 12.
前述の足場板８は第１図に示すように、炉内に挿入され
た腕木７に載置されている。この場合、足場板８を腕木
７に載置するだけでもよいが、足場板８と腕木７を連結
してもよい。また、足場板８を互いに連結してもよい。As shown in FIG. 1, the aforementioned scaffolding board 8 is placed on the arm 7 inserted into the furnace. In this case, the scaffold board 8 may be simply placed on the arm 7, but the scaffold board 8 and the arm 7 may be connected. Furthermore, the scaffolding boards 8 may be connected to each other.
前記の墜落防止部材９は、第４図に示すように、腕木７
の先端に可動に取付けられている。この墜落防止部材９
は腕木７と共に、炉壁の貫通穴を通って炉内に挿入され
、そして先端のフック９ａを他の腕木７のリング９ｂに
掛止めすることにより、第１図に示すように組み立てら
れる。この墜落防止部材９は手摺りと同様に、作業者の
墜落防止や案内の役目をするものであり、腕木７を連結
して腕木７を補強するものではない。The fall prevention member 9 is attached to the armrest 7 as shown in FIG.
movably attached to the tip of the This fall prevention member 9
is inserted into the furnace together with the arm 7 through a through hole in the furnace wall, and is assembled as shown in FIG. 1 by hooking the hook 9a at the tip to the ring 9b of the other arm 7. Like the handrail, this fall prevention member 9 serves to prevent workers from falling and to guide them, and does not connect the arms 7 to reinforce the arms 7.
上記構造のボイラ火炉内の点検用足場２は次のようにし
て組み立てられる。ボイラ火炉１の運転を停止した後、
先ず、炉壁の貫通穴に挿入されていた図示していない密
封栓（貫通穴を塞ぐために、腕木７の代わりに貫通穴に
挿入され、ホルダー１０に固定されている）を取外し、
墜落防止部材９と共に腕木７を炉外から挿入し、ボルト
・ナツト１１によって腕木７をホルダー１０に固定する
。The inspection scaffold 2 in the boiler furnace having the above structure is assembled as follows. After stopping the operation of boiler furnace 1,
First, remove the sealing plug (not shown) inserted into the through-hole in the furnace wall (inserted into the through-hole instead of armrest 7 and fixed to holder 10 in order to close the through-hole),
The arm 7 is inserted from outside the furnace together with the fall prevention member 9, and the arm 7 is fixed to the holder 10 with bolts and nuts 11.
この腕木７の挿入固定は、炉外の安全な場所から行われ
る。炉内に熱が残っていても、この腕木７の取付は作業
を行うことができる。次に、火炉１内の温度が下がり、
作業環境が整った後、炉底部に設けられた図示していな
いマンホールから足場板８を搬入し、腕木７に載せると
共に、墜落防止部材９を前述のようにして組み立てる。The arm 7 is inserted and fixed from a safe place outside the furnace. Even if heat remains in the furnace, the arm 7 can be attached. Next, the temperature inside the furnace 1 decreases,
After the working environment has been prepared, the scaffolding board 8 is carried in through a manhole (not shown) provided at the bottom of the furnace and placed on the armrest 7, and the fall prevention member 9 is assembled as described above.
本発明の点検用足場は、上述のように、基礎、柱材、筋
かい、根がらみ、緊結金具、ジヨイント等を必要としな
いので、構造が簡単であり、かつコストが安い。As described above, the inspection scaffold of the present invention does not require foundations, pillars, braces, root ties, fastening fittings, joints, etc., so it has a simple structure and is low in cost.
更に、炉底部のマンホールから炉内に搬入される部品は
足場板８だけであるので、搬入作業量が少ない。更に、
炉内に基礎を設ける必要がなく、炉内で組み立てる部品
数が少ないので、炉内作業が簡単であり、又固定された
腕木７を頬りに組み立てを行うので、炉内作業が安全で
ある。Furthermore, since the only component that is carried into the furnace through the manhole at the bottom of the furnace is the scaffolding board 8, the amount of work required to carry it in is small. Furthermore,
There is no need to provide a foundation inside the furnace, and the number of parts to be assembled inside the furnace is small, so work inside the furnace is easy, and work inside the furnace is safe because the assembly is carried out with the fixed arms 7 in place. .
更に、炉内の温度がまだ高いうちに足場の組み立て作業
（腕木７の取付は作業）を開始することができる（従来
は、ボイラが冷えるまで約１日待つ必要があった）。更
に、四つの炉内面の一つに足場が完成すれば、その炉内
面の点検を開始することができ、すべての炉内面の足場
が完成するまで（足場全体が完成するまで）待つ必要が
ない。Furthermore, it is possible to start assembling the scaffolding (installing the arms 7) while the temperature inside the furnace is still high (conventionally, it was necessary to wait about a day until the boiler cooled down). Furthermore, once the scaffolding is completed on one of the four furnace surfaces, inspection of that furnace surface can be started, and there is no need to wait until the scaffolding on all the furnace surfaces is completed (until the entire scaffolding is completed). .
このように、部品の数が少なく、搬入および組み立て作
業が簡単で、組み立ておよび点検作業を早く開始するこ
とができるので、足場構築の所要日数と点検所要日数、
ひいてはボイラの停止日数が短縮される。これは、電力
需要が逼迫している現状では、非常に望ましいことであ
る。In this way, the number of parts is small, delivery and assembly work is easy, and assembly and inspection work can be started quickly, so the number of days required for scaffold construction and inspection can be reduced.
As a result, the number of days the boiler is stopped is shortened. This is highly desirable in the current situation where power demand is tight.
以上、本発明の実施例について説明したが本発明は上記
実施例に限定されるものではない。例えば、ホルダーの
形状や、ホルダーへの腕木の取付は構造を変更すること
ができる。更に、腕木をホルダーに取付けないで、外部
支持部材、例えば炉壁の変形を抑えるために炉壁外面に
取付けられた補強部材（例えばバックステー）、または
炉壁の周囲に設けられたボイラ架構に取付けてもよい。Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, the shape of the holder and the structure of the attachment of the arm to the holder can be changed. Furthermore, instead of attaching the arm to the holder, it can be attached to an external support member, such as a reinforcing member (for example, a backstay) attached to the outer surface of the furnace wall to suppress the deformation of the furnace wall, or a boiler frame installed around the furnace wall. May be installed.
更に、上下の足場ステージ間に階段を設けてもよい。こ
の階段は、足場板の内側（炉中実測）において、腕木に
斜めに取付けられる（そのため、階段を取付ける腕木は
他のものよりも長く形成される）。更に、墜落防止部材
は炉壁の貫通穴から挿入しないで、腕木と別体に形成し
、マンホールから炉内に搬入して腕木に取付けてもよい
。また、墜落防止部材は他の形状のものでもよい。Furthermore, stairs may be provided between the upper and lower scaffold stages. This staircase is attached diagonally to the arms on the inside of the scaffold board (measured inside the furnace) (therefore, the arms to which the stairs are attached are made longer than the others). Furthermore, the fall prevention member may not be inserted through a through hole in the furnace wall, but may be formed separately from the arm, carried into the furnace through a manhole, and attached to the arm. Further, the fall prevention member may have other shapes.
本発明によるボイラ火炉内の点検用足場は、部品数が少
ないので、構造が簡単であり、かつコストが安い。更に
、炉内への搬入作業や炉内での組み立て作業が簡単であ
り、かつ構築作業や点検作業を早く開始することができ
るので、足場構築の所要日数と点検所要日数、ひいては
ボイラの停止日数が短縮される。The scaffold for inspection inside a boiler furnace according to the present invention has a small number of parts, so the structure is simple and the cost is low. Furthermore, it is easy to carry the work into the furnace and assemble it inside the furnace, and construction work and inspection work can be started quickly, which reduces the number of days required for constructing the scaffolding, the number of days required for inspection, and the number of days the boiler needs to be shut down. is shortened.
第１図は本発明の実施例による足場を備えたボイラ火炉
の一部を示す斜視図、第２図は炉壁の腕木取付は部分の
拡大縦断面図、第３図は第２図の右側面図、第４図は墜
落防止部材の拡大斜視図である。
１・・・火炉、 ２・・・点検用足場、 ３・・・ボイ
ラチューブ（炉壁）、 ７・・・腕木、８・・・足場板
、 ９・・・墜落防止部材、 １０・・・ホルダー
出願人 東 電 設 計 株式会社
代理人 弁理士 江 崎 光 好
代理人 弁理士 江 崎 光 史Fig. 1 is a perspective view showing a part of a boiler furnace equipped with a scaffold according to an embodiment of the present invention, Fig. 2 is an enlarged longitudinal cross-sectional view of a part showing the attachment of a arm to the furnace wall, and Fig. 3 is the right side of Fig. 2. The plan view and FIG. 4 are enlarged perspective views of the fall prevention member. DESCRIPTION OF SYMBOLS 1... Furnace, 2... Scaffolding for inspection, 3... Boiler tube (furnace wall), 7... Bracelet, 8... Scaffold board, 9... Fall prevention member, 10... Holder applicant TEPCO Sekkei Co., Ltd. Agent Patent attorney Hikaru Esaki Preferred agent Patent attorney Hikaru Esaki
Claims (3)
に挿入され、かつ炉壁あるいは外部支持部材に固定され
た多数の腕木と、 炉内で腕木に保持された足場板と を備えていることを特徴とするボイラ火炉内の点検用足
場。(1) A large number of arms inserted into the furnace from the outside of the furnace wall through through holes in the furnace wall and fixed to the furnace wall or external support members, and a scaffolding board held by the arms inside the furnace. A scaffold for inspection inside a boiler furnace, characterized by comprising:
なり、 このボイラチューブを湾曲させてボイラチューブの間に
貫通穴が形成され、 腕木がボイラチューブに溶接されたホルダーに固定され
ていることを特徴とする、請求項（１）記載のボイラ火
炉内の点検用足場。(2) The furnace wall of the furnace essentially consists of a large number of boiler tubes, the boiler tubes are curved to form through holes between the boiler tubes, and the arms are fixed to holders welded to the boiler tubes. The scaffold for inspection inside a boiler furnace according to claim (1), characterized in that:
とを特徴とする、請求項（１）または（２）記載のボイ
ラ火炉内の点検用足場。(3) The scaffold for inspection inside a boiler furnace according to claim (1) or (2), characterized in that a fall prevention member is attached to the arm in the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13550490A JP2875590B2 (en) | 1990-05-28 | 1990-05-28 | Scaffold for inspection in boiler furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13550490A JP2875590B2 (en) | 1990-05-28 | 1990-05-28 | Scaffold for inspection in boiler furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0431563A true JPH0431563A (en) | 1992-02-03 |
| JP2875590B2 JP2875590B2 (en) | 1999-03-31 |
Family
ID=15153309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13550490A Expired - Lifetime JP2875590B2 (en) | 1990-05-28 | 1990-05-28 | Scaffold for inspection in boiler furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2875590B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07119913A (en) * | 1993-10-20 | 1995-05-12 | Shikoku Electric Power Co Inc | Conveying apparatus of scaffolding member into furnace and rotating device for the member |
| JP2016050727A (en) * | 2014-09-01 | 2016-04-11 | 住友金属鉱山株式会社 | Waste heat boiler for non-ferrous metal smelting furnace |
| CN106639333A (en) * | 2017-02-24 | 2017-05-10 | 中国电建集团河南工程公司 | Installation method of rigid scaffold during spiral water wall installation process |
| JP2017155971A (en) * | 2016-02-29 | 2017-09-07 | 三菱日立パワーシステムズ株式会社 | Boiler and refractory structure of boiler |
| JP6264497B1 (en) * | 2017-08-30 | 2018-01-24 | 三菱重工環境・化学エンジニアリング株式会社 | Water pipe wall module and boiler manufacturing method |
| JP2021081161A (en) * | 2019-11-22 | 2021-05-27 | 三菱パワー株式会社 | Boiler inside inspection method |
-
1990
- 1990-05-28 JP JP13550490A patent/JP2875590B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07119913A (en) * | 1993-10-20 | 1995-05-12 | Shikoku Electric Power Co Inc | Conveying apparatus of scaffolding member into furnace and rotating device for the member |
| JP2016050727A (en) * | 2014-09-01 | 2016-04-11 | 住友金属鉱山株式会社 | Waste heat boiler for non-ferrous metal smelting furnace |
| JP2017155971A (en) * | 2016-02-29 | 2017-09-07 | 三菱日立パワーシステムズ株式会社 | Boiler and refractory structure of boiler |
| CN106639333A (en) * | 2017-02-24 | 2017-05-10 | 中国电建集团河南工程公司 | Installation method of rigid scaffold during spiral water wall installation process |
| JP6264497B1 (en) * | 2017-08-30 | 2018-01-24 | 三菱重工環境・化学エンジニアリング株式会社 | Water pipe wall module and boiler manufacturing method |
| JP2021081161A (en) * | 2019-11-22 | 2021-05-27 | 三菱パワー株式会社 | Boiler inside inspection method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2875590B2 (en) | 1999-03-31 |
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