JPS6111504A - Cooling wall structure of boiler - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ボイラ、殊に水または蒸気を流通させる複数
の管と管の間に配設されて管に溶着されるウェブとから
構成される冷却壁の構造に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a boiler, particularly a cooling boiler comprising a plurality of pipes through which water or steam flows and a web disposed between the pipes and welded to the pipes. Concerning wall structure.

従来の技術 第４ａ及び４ｂ図は、近年、高性能水管ボイラに多く用
いられている炉壁の構成を示す。BACKGROUND OF THE INVENTION FIGS. 4a and 4b show the construction of a furnace wall that has been widely used in high-performance water tube boilers in recent years.

しかして、との炉壁には、ボイラ水まだは蒸気を管内に
流通させ冷却を行なう水冷壁及び蒸気冷却壁が用いられ
ている。これらの水または蒸気を流通させる管１は、炉
内ガスに対する気密性向上のため、それらの間にウェブ
２を配置して溶接し、平面パネル構造としている。Therefore, water-cooled walls and steam-cooled walls are used for cooling the furnace walls by allowing boiler water or steam to flow through the pipes. These pipes 1 through which water or steam flows have a flat panel structure by welding a web 2 between them in order to improve airtightness against gas in the furnace.

第５ａ及び５１）図は、炉内の過熱器管３等が炉壁まだ
は天井を貫通する箇所の配置を示す。Figures 5a and 51) show the arrangement of the parts in the furnace where the superheater tube 3 and the like penetrate through the furnace wall and ceiling.

しかして、貫通箇所で、炉壁管４−ｉまたは天井管５の
ピッチＰが狭い場合、過熱器管３との干渉を避けるため
に、炉壁管４捷たけ天井管５を同一平面に設置すること
ができない。Therefore, if the pitch P of the furnace wall tubes 4-i or the ceiling tubes 5 is narrow at the penetration point, the furnace wall tubes 4-i and the ceiling tubes 5 are installed on the same plane to avoid interference with the superheater tubes 3. Can not do it.

特に、全体的に貫通部の多い天井で、貫通管がない部分
に第４ａ及び４ｂ図に示すよう々平面パネル構造を採用
しようとすると、第６図に示すように、天井管５のレベ
ルに水及び蒸気のドレン及びエアの閉塞が生じるよう々
上り下りを設け々ければならず、流動安定面から問題が
ある。々お、第６図中、婚部分は平面パネル構造適用範
囲を示す。In particular, if you try to adopt a flat panel structure as shown in Figures 4a and 4b in a ceiling that has many penetrations throughout and there are no penetration pipes, as shown in Figure 6, the level of the ceiling pipe 5 It is necessary to provide many ups and downs so that water and steam drain and air blockages occur, which poses problems in terms of flow stability. In Fig. 6, the mating portion indicates the applicable range of the flat panel structure.

このため、第７ａ図に示すような天井管配置としている
ものが多いが、この場合平面パネル構造を適用できるの
は簾部分のみである。For this reason, many ceiling tubes are arranged as shown in FIG. 7a, but in this case, the flat panel structure can only be applied to the blind portion.

寸だ、第７１）図は第７ａ図の７ｂ−７ｂ断面を示すが
、このように貫通管の々い場所であっても、気密性、剛
性に劣るスキンケーシング６のシール方式とせざるを得
す、また下段の管を支持するために金具７が必要である
が、高温ガス部にこのような金具を設置することは構造
・強度面から好ましくない。Figure 71) shows the section 7b-7b in Figure 7a, but even in places with a large number of through pipes, the sealing method of the skin casing 6, which is inferior in airtightness and rigidity, has no choice but to be used. Furthermore, although a metal fitting 7 is required to support the lower pipe, it is not preferable from the viewpoint of structure and strength to install such a metal fitting in the high-temperature gas section.

発明が解決しようとする問題点 本発明は、したがって、以上述べたよう々従来技術の問
題を解決し、ボイラの冷却壁を気密性及び剛性に優れた
構造にすることにある。Problems to be Solved by the Invention The present invention therefore solves the problems of the prior art as described above, and provides a cooling wall of a boiler with a structure with excellent airtightness and rigidity.

問題点を解決するだめの手段 本発明は、このような問題を解決するために、水または
蒸気を流通させる複数の管と、管の間に配設されて管に
溶着されるウェブとから構成されるボイラの冷却壁にお
いて、前記複数の管のうち一部を他の管より管軸心と直
角方向に変位させて配置したことを特徴とする。Means for Solving the Problems In order to solve these problems, the present invention consists of a plurality of pipes through which water or steam flows, and a web disposed between the pipes and welded to the pipes. In the cooling wall of the boiler, some of the plurality of tubes are disposed so as to be displaced from other tubes in a direction perpendicular to the tube axis.

実施例 以下第１〜３図を参照して本発明の実施例について詳述
する。EXAMPLES Below, examples of the present invention will be described in detail with reference to FIGS. 1 to 3.

第１図は、本発明によるボイラの冷却壁の一例を示す。FIG. 1 shows an example of a cooling wall of a boiler according to the invention.

水捷たは蒸気を流通させる複数の管のうち、一部の管８
は、必要に応じて他の管９より管軸心と直角方向に変位
して配置され、管９とは従来のウェブ溶接水管パネルと
同様にウェブ２を間に配置して溶接し、一体とされてい
る。この溶接は、工場で行っても、据付現場で行っても
良い。Some pipes 8 among multiple pipes that circulate water or steam
If necessary, the pipe 9 is displaced from other pipes 9 in the direction perpendicular to the pipe axis, and the pipe 9 is welded with the web 2 disposed between them in the same way as a conventional web welded water pipe panel, and is integrally formed. has been done. This welding may be performed at the factory or at the installation site.

第２ａ〜２ｄ図は、本発明を天井管に適用した例を示す
。天井管５を過熱器管３等の貫通のため二段レベルとす
るのは、第７ａ図の例と同様であるが、貫通しない場所
では、第２ｄ図に示すように、下段の管８を上段の管９
の間に配置して、これらの管８．９をウェブ２にて結合
し、第１図の図に示す金具７は不要である。Figures 2a to 2d show an example in which the present invention is applied to a ceiling pipe. The ceiling pipe 5 is set at two levels for the passage of the superheater pipe 3, etc., as in the example shown in Fig. 7a, but in places where the ceiling pipe 5 is not penetrated, as shown in Fig. 2d, the lower pipe 8 is Upper pipe 9
These tubes 8,9 are connected by a web 2, placed between them, so that the fittings 7 shown in the diagram in FIG. 1 are not required.

第３図は、本発明を火炉１１と後部煙道１２との間の副
煙道底部１０に適用した例を示す。通常、この部分は熱
負荷が高いので、水冷壁管捷たは蒸気冷却壁管のピッチ
が狭く、過熱器管等の貫通があると、天井と同様、流動
安定性またはガスシール性の問題が起こるが、本発明の
適用により解決される。FIG. 3 shows an example in which the present invention is applied to the auxiliary flue bottom 10 between the furnace 11 and the rear flue 12. Normally, this area has a high heat load, so if the pitch of water-cooled wall pipes or steam-cooled wall pipes is narrow and there is a penetration of superheater pipes, etc., problems with flow stability or gas sealing will occur, similar to the ceiling. However, it is solved by application of the present invention.

本発明は、他に、炉底部、その他一般の水冷壁及び蒸気
冷却壁部にも適用が可能である。The present invention can also be applied to the furnace bottom, other general water-cooled walls, and steam-cooled walls.

発明の効果 本発明は、以上述べた構成であるので、従来スキンケー
シングシール方式を余儀々くされていだ炉壁及び天井に
本発明を採用することにより、下記の効果が得られる。Effects of the Invention Since the present invention has the above-described configuration, the following effects can be obtained by applying the present invention to the furnace walls and ceiling, for which the conventional skin casing seal method was unavoidable.

（１）多数の貫通部があっても、炉壁及び天井を完全気
密構造にすることができる。(1) Even with a large number of penetration parts, the furnace wall and ceiling can be made completely airtight.

（２）水平管に適用した場合、下段の管の重量を別の支
持装置、金具等なしで確実に支持することができる。(2) When applied to a horizontal pipe, the weight of the lower pipe can be reliably supported without a separate support device, metal fittings, etc.

（３）炉壁及び天井の剛性が向上し、ボイラ構造強度の
信頼性が増加する。(3) The rigidity of the furnace walls and ceiling is improved, increasing the reliability of the boiler structural strength.

（４）従来の工作技術で十分対応できるので、既設ボイ
ラの改造にも容易に対応できる。(4) Since it can be sufficiently handled using conventional machining techniques, modification of existing boilers can be easily performed.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明によるボイラの冷却壁の一例を示す図、
第２ａ図は本発明をボイラの天井に適用した例を示す図
、第２ｂ図は第２ａ図の２ｂ−２ｂ断面図、第２ｃ図は
第２ａ図の２ｃｍ２ｃ断面図、第２ｄ図は第２ａ図の２
ｄ　−２ａ断面図、第３図は本発明をボイラの副煙道底
部に適用した例を示す図、第４ａ図及び第４ｂ図は従来
のボイラ冷却壁を示す図、第５ａ図は従来例によるボイ
ラ炉壁または天井部分の構造を示す図、第５ｂ図は第５
ａ図の５ｂ−５ｂ断面図、第６図及び第７ａ図はその天
井管の配置例を示す図、第７ｂ図は第７ａ図の７ｂ−７
ｂ断面図である。 ２・・ウェブ、８，９・拳管。FIG. 1 is a diagram showing an example of a cooling wall of a boiler according to the present invention;
Fig. 2a is a diagram showing an example in which the present invention is applied to the ceiling of a boiler, Fig. 2b is a sectional view taken along line 2b-2b in Fig. 2a, Fig. 2c is a 2cm2c sectional view in Fig. 2a, and Fig. 2d is a sectional view taken along line 2b-2b in Fig. 2a. Figure 2
d-2a sectional view, FIG. 3 is a diagram showing an example in which the present invention is applied to the bottom of a sub-flue of a boiler, FIGS. 4a and 4b are diagrams showing a conventional boiler cooling wall, and FIG. 5a is a conventional example. Figure 5b is a diagram showing the structure of the boiler furnace wall or ceiling part according to
5b-5b sectional view in Figure a, Figures 6 and 7a are diagrams showing examples of the arrangement of ceiling pipes, Figure 7b is 7b-7 in Figure 7a
B is a sectional view. 2. Web, 8, 9. fist pipe.

Claims (1)

【特許請求の範囲】[Claims] 水または蒸気を流通させる複数の管と、管の間に配設さ
れて管に溶着されるウェブとから構成されるボイラの冷
却壁において、前記複数の管のうち一部を他の管より管
軸心と直角方向に変位させて配置したことを特徴とする
ボイラの冷却壁構造。In the cooling wall of a boiler, which is composed of a plurality of pipes through which water or steam flows, and a web disposed between the pipes and welded to the pipes, some of the plurality of pipes are connected to the other pipes. A boiler cooling wall structure characterized by being displaced in a direction perpendicular to the axis.