九、發明說明： C發明所屬之技術領域3 發明領域 本發明係有關於高爐用板條冷卻器，其係構成為可„及 收因板條本體與鐵皮間的熱膨脹而產生之應力，特別是可 極力縮小作用於給排水取出管與板條本體間的熔接部等上 之應力，並可耐長時間使用者。 發明背景 目前的高爐操作作業中，係廣泛使用板條冷卻器（以下 亦有單稱為板條）以作為用以冷卻壁爐之手段。 近年來’高爐操作作業中，隨著朝向產出量增加及產 出效率提高方向發展，相較於以往，高爐爐體之熱負載提 南’而漸要求一種可更有效地冷卻爐體之板條冷卻器。於 此發展中，最近開發出一種相較習知之鑄鐵板條，熱傳導 性係更為優異之銅或銅合金製之板條冷卻器，且漸為適用。 然而’將銅或銅合金製之板條冷卻器應用於高爐時， %知之鑄鐵板條未存有之新課題卻日漸顯著化。即，習知 之鱗鐵板條因係預先將冷卻管配置於板條本體模型版内 後’再行鑄造而讓冷卻管與板條本體一體化之構造，故可 為直至鐵皮外側，都無板條本體之給排水口與給排水管間 之接合部的構造。 3 —方面’銅或同合金製之板條冷卻器係如下之構 ， η Ρ ’於板條本體内形成冷卻管後，因需熔接並接合板 條本體之給排水口與給排水管，故在板條本體附近具有炫 接部。 此銅或鋼合金製之板條冷卻器中之板條本體附近的熔 接部’在高爐操作作業中’因暴露在高溫下之板條本體的 爐内側，與進行冷卻放熱之板條本體的鐵皮側間的熱膨脹 差及熱收縮差所導致之位移而產生應力時，會成為應力集 中的部位，而於該部位發生疲勞龜裂，導致板條冷卻器之 壽命縮短。 一般的板條安裝中，如第6圖所示，係藉由安裝螺栓8 與鐵皮螺帽9而將板條本體1固定於鐵皮6上來分散荷重，俾 令板條本體1之荷重不直接作用於給排水取出管2。 銅或銅合金製之板條冷卻器的給排水取出管2,係如第 3圖所示，溶接於板條本體1之給排水口。用以貫通該給排 水管2之鐵皮6的開口部，係藉由隔著密封板5而熔接給排水 取出管2及鐵皮6而加以密封，俾不讓高爐之爐内氣體洩漏 至鐵皮外側。 第3圖及第6圖所示之習知板條，於高爐操作作業中， 因板條本體之爐内侧與鐵皮側間的熱膨脹差，進而板條本 體之鐵皮侧與鐵皮間的熱膨脹差所引起的位移而產生應力 變動，此時，縱或安裝螺栓8可分擔板條本體之荷重，仍無 法吸收因熱膨脹差而產生的應力變動。 因此，銅或銅合金製之板條冷卻器中，由於高爐操作 作業中的麟脹差所引起的應力變動，㈣是成為應力集 中部，即與鐵皮與板條本體附近的給排水取出管間之熔接 部’會成為疲勞龜裂的發生部位。 又，連接給排水取出管2與鐵皮6之密封板5，當板條本 體與鐵皮產生有因熱膨脹差所引起的位移時，係容易產生 變开>，且其雖具有可減輕鐵皮與板條本體附近之給排水取 出管間的熔接部之應力此功效，但密封板5本身還是會因反 覆之應力所產生的變形而破損’恐有引起爐内氣體洩漏至 外部的疑慮。 對於前述技術性課題，歷來係有一隔著具可伸縮性之 伸縮管而接合給排水取出管與鐵皮之方法（譬如日本專利 公開公報特開昭52 — 8553號）。此方法如第4圖所示，係配 置伸縮管7以包覆給排水取出管2,並隔著該伸縮管7而熔接 前述給排水取出管2及鐵皮6。 此時，藉由熔接於伸縮管7端部與給排水取出管2外周 上的密封板5而加以密封，俾不令高爐爐内氣體洩漏至鐵皮 外側。 依該方法’因板條本體與鐵皮間的熱膨脹差而產生位 移時’係可藉由伸縮管7在產生減脹或減縮之方向上加 以變形而吸收應力，獲得可抑額熱膨脹差所引起的應力 而導致的鐵皮與板條本體附近之給排水取出管間的熔接 部，以及密封板5中的疲勞破壞之功效。 惟，伸縮官7係如第4圖所示，易於做出折皺構造等的 伸縮此種構成的相反面’伸縮管7會因長年的使用而有灰塵 附著’使得舰之進展迅速，且偏產生疲勞破壞之構造， 故’耐久性之面上具問題。 因此，需定期替換伸縮管7，以免伸縮管7上產生有穿 破孔或龜裂，而讓爐内氣體洩漏至外部，抑或簡單修補伸 縮管7上產生有穿破孔或龜裂之部位，故，具有需大量勞力 之問題，又，因高爐之停工等而有生產性降低之問題。 再者，由於板條安裝螺栓之變形等，板條荷重作用於 板條本體與給排水管間的熔接部上時，板條本體與給排水 取出管間之熔接部會產生疲勞破壞，且由該處滲漏出冷卻 水’而有引起爐内進水此一極重大問題的危險性。 又，作為將習知之鑄鐵板條安裝於鐵皮上之方法，可 知有如下述者’即’以省略板條本體1之安裝螺栓8及螺帽9 而迅速地進行板條更換為目的，如第5圖及第7圖所示，係 將保護管3配置於板條本體上，以包覆給排水取出管2，進 而’將梳形箱4配置於鐵皮開口部周圍，以包覆保護管3， 且給排水取出管2與保護管3、以及梳形箱4與保護管3之 間’係分別藉由填充物10及固定塊11而加以固著（參照鐾如 曰本專利公開公報特開平8 —225813號）。 依該方法，藉由填充物10等而固著給排水取出管2與保 遵管3 ’係可提高給排水取出管2之剛性，進而，利用填充 物10等而固著保護管3及梳形箱4，可藉由支撐板條本體之 荷重而如第7圖所示’省略板條本體1之安裝螺栓8與螺帽9。 本方法縱或係銅或銅合金製之板條亦可適用。然而， 該方法中，因給排水取出管2、保護管3及梳形箱4係_體化 之構成，故無法吸收由於板條本體1與鐵皮6之熱膨張差而 產生的移位之應力，且板條本體1及給排水取出管2間之炼 接部有應力集中情形’使付產生疲勞破壞之可能性反而提 南。 如前述，近年來，伴隨高產出量高爐操作作業之高爐 爐體的熱負荷增加’板條本體之爐内側與鐵皮側，進而板 條本體之鐵皮侧與鐵皮間的熱膨脹差擴大，因此，於板條 本體與給排水取出管間之熔接部，進而，於給排水取出管 與鐵皮間之溶接部’產生疲勞破壞之可能性提高，惟，習 知之板條無法獲得用以提高板條壽命之充足功效則為現 狀。 【發明内容3 發明概要 有鑑於前述習知技術之現狀，本發明之目的在於提供 一種高爐用板條冷卻器，其係可吸收伴隨高產出量高爐操 作作業中之高爐爐體的熱負荷增加而產生之板條本體與鐵 皮間之熱膨脹差所引起的應力，並抑制板條本體與給排水 官間之熔接部，以及鐵皮與給排水取出部間之熔接部中產 生的疲勞破壞，具有可耐長時間使用之高可靠度構造者。 本發明係解決前述技術性課題者，本發明之要旨，係 一種高爐用板條冷卻器，其係給排水取出管熔接於銅或銅 合金製板條本體上，且該板條本體與高爐鐵皮藉由多數個 鋼製安裝螺栓固定者，其特徵在於：保護管熔接於前述板 條本體上，以包覆給排水取出管；在形成於前述鐵皮上之 開口部外周的鐵皮面上設有梳形箱，以包覆前述保護管； 該梳形箱之側板端部之其中一者係熔接於鐵皮上；及該侧 樣圖 第2圖係顯示本發明以板條給排水取出管之保護管、梳 形粕為中介的板條本體與鐵皮間之接合狀況圖。 " 15 板端部之另—者細密封板為中介邮接於前述保護管之 外周面上。 之 依本發明之向爐用板條冷卻器，於高爐之爐體或爐 採用冷卻性能優異之銅或鋼合金製板條冷卻糾，係可吸 收伴隨高產出量高爐操作作業t之高爐爐體其熱負荷增加 而產生之板條本體與鐵皮_熱膨脹差所引㈣應力，並 可抑制板條本體與給排水取出料部，及鐵皮與仏 排水取出管間⑽接部中產㈣疲勞破壞，提供—種具: 可耐長時間制之高可靠度構造之高爐爐體冷卻用 圖式簡單說明 ’' ° 第1圖係顯示將本發明之板條配置於高爐爐壁上之雜 第3圖係顯示習知之未以板條伸縮管為中介的板條本 體與鐵皮間之接合狀況圖。 ' 第4圖係顯示習知之以板條伸縮管為中介的板條本體 與鐵皮間之接合狀況圖。 第5圖係顯示習知之以板條給排水取出管之保護管、梳 形箱及填充物為中介之板條本體與鐵皮間的接合狀况圖。 第6圓係顯示將習知之以安裝螺栓為中介的板條配置 於高爐爐壁上之態樣圖。 第7圖係顯示將習知之未以安裝螺栓為中介的板條 置於高爐爐壁上之態樣圖。 20 1336353 較佳實施例之詳細說明 第1圖係概略顯示本發明之高爐爐體冷卻用板體與鐵 皮間之接a狀態，第2圖係概略顯示本發明之板條本體、給 5排水取出官、保辭、梳形箱及鐵皮之間各自的接合狀態。 本發明中之高爐用板條冷卻器係如第1圖及第2圖所 示、、’σ排水取出管2熔接於銅或銅合金製板條本體丨上，且 該板條本體1與高爐鐵皮6係藉由多數個鋼製安裝螺检8加 以固定。藉由讓板條本體為銅或銅合金製，相較於習知之 1〇鑄鐵製板條本體，可提高熱傳導性，且可藉由於板條本體 内之冷卻水配管中加以循環之冷卻水，有效地消除來自板 條本體之爐内側的熱度。 又，板條本體1的荷重係以多數個鋼製安裝螺栓8加以 支撐。鋼製安裝螺栓8雖可分擔板條本體丨之重量，但卻無 15法吸收因板條本體！與鐵皮6間之熱膨服差所引起的應力變 動。 因此，本發明中，如第1圖及第2圖所示，高爐用板條 冷卻器係如下述之構造，即，保護管3熔接於板條本體丨上， 以包覆給排水管2,且於形成在鐵皮上之開口部外周的鐵皮 2〇面，設有梳形箱4以包覆保護管3,並且鐵皮6熔接於該梳形 箱4之側板端部之其中一者，隔著密封板5而將該側板端部 之另一者炫接於前述給排水管2外周。 前述板條構造中，因保護管3係以包覆給排水取出管2 方式而熔接於板條本體丨上，因此應力集中部位，即板條本 11 1336353 體1之給排水口與給排水取出管2間的熔接部附近之截面積 - 擴大，而可藉由保護管來分擔該部位之重量，當產生因熱 膨脹差而引起的位移時，可減輕給排水取出管2之熔接部的 應力。 5 保護管之管厚度若低於5mm則無法獲得足夠的強度， 而若超過7mm時’與給排水管間的間隔變得狹窄而不易進 行熔接’故，基於可具足夠強度且易於熔接之理由，宜為 ^ 5mm〜7mm。又，保護管之材質由即便暴露於高溫下也可 具有強度，且易於熔接之理由，宜為高溫配管用碳鋼。 10 又’形成於前述鐵皮上之開口部中，以包覆保護管3 方式而配置有梳形箱4，又，給排水取出管2及保護管3並未 直接與鐵皮熔接，係可因熱膨脹而進行位移之狀態，並隔 著梳形箱4而讓給排水取出管2及保護管3熔接於鐵皮6上， 當產生因熱膨脹差所引起的位移時，梳形箱4係在位移方向 15 上產生變形，藉此，可減輕給排水取出管2之熔接部的應力。 φ 再者’由於梳形箱4之側板端部之其中一者與開口部外 周之鐵皮面熔接，且梳形箱4之側板端部的另一者與保護管 3外周面，係隔著密封板5而加以熔接，因此高爐爐内氣體 係以梳形箱4之側板及密封板5而予以密封，防止洩漏至鐵 20 皮之外部。 此外’前述鐵皮6之開口部’當產生因高爐操作作業中 之熱膨脹差而引起的位移時，縱或給排水取出管2及保護管 3多少有些變形，但因未與鐵皮接觸且為可自由地位移之狀 態，故，相較於保護管3之外徑’宜具有足夠大的開口徑。 12 1336353 再者，構成梳形箱4之侧板及密封板5，宜為板厚較薄 的鋼板等之金屬板’俾當產生有因高爐操作作業中之熱膨 脹差所引起的位移時，可在位移方向上進行收縮。 前述侧板之長度若低於40mm則過短，無法充分吸收因 5熱膨脹差而引起的位移，但若超過120mm則過長，會與門 圍設備相干涉，依上述理由，側板之長度宜為4〇mm〜 120mm。 前述侧板的厚度若低於8mm則過薄，不易進行炫接， 超過10mm時，雖不易變形但卻無法吸收熱膨脹差，因此， 10由維持足夠的強度且易於進行溶接之理由，側板的厚度宜 為 8mm〜10mm 〇 又，前述密封板5的厚度’若低於5mm則過薄，不易進 行溶接，超過7mm時’雖不易變形卻無法吸收熱膨脹差， 因此，由維持足夠的強度且易於進行溶接之理由，密封板5 15 之厚度宜為5mm〜7mm。 又，前述侧板及密封板之材質，由具足夠的強度且易 於進行炫接之理由，宜為普通碳鋼。 又，梳形箱及密封板的内側空間，宜不以填充铸件及 耐火物等所充填’俾讓梳形箱及密封板易於產生變形且可 20 吸收熱膨脹差。 再者，本發明之銅或銅合金製板條之製造方法，並不 需特別限定，但一般可如下述加以製造。第一，在爐内側 與爐外側，分別各製作一個與板條為相同形狀之木質模 具。第二’將該木質模具設置在相當於板條之爐内側與爐 13 卜“的各個杈具上’之後倒入砂土。第三固定砂土 旱除木f 而製作頻。疏水道係與时砂土之砂模i 開製作’並設置於該砂模之m定位置上。 、n 第四，讓爐内側與爐外側之砂模上下組合，並由注入 庄入銅或鋼合金之炼液。第五，凝固後移除砂模，皆入 與銅板條本料相同材質之栓塞並雜倒砂孔。將給排水 取出管轉於給排水口上，並轉保護管以包I給 屮菩。 又，亦有如下述之製造方法，即，在與板條為相同形 狀之軋制銅板或軋制銅合金板上貫穿出疏水道，而不需要 的孔洞則加以嵌人與板條本體為相同材質之栓塞並溶接， 又，熔接保護管以包覆給排水取出管。 實施例 以下依圖式說明本發明之實施例。如第1圖及第2圖 所示，使用在熔接於本發明之銅製板條本體丨上之給排水取 出管2的周圍，配置有保護管3及梳形箱4之銅製板條冷卻 器，並藉由銅製安裝螺栓與螺帽，而將板條本體中的四個 地方固定於高爐爐體的鐵皮上。 又’為確認本發明之銅製板條的功效，係將習知之銅 製板條冷卻器，即，隔密封板5而將熔接於習知之銅製板條 本體1上的給排水取出管2，熔接於鐵皮上者，同樣地安裝 於高爐爐體的鐵皮上，並模擬使用本發明之銅製板條冷卻 器與習知之銅製板條冷卻器來進行高爐操作作業時，板條 本體與給排水取出管2間之熔接部以及密封板5的損傷狀 1336353 態。 再者，本發明之銅製板條冷卻器中，梳形箱係使用厚 度為9mm之普通炭鋼，密封板係使用厚度為6mm的普通碳 鋼。 5 依模擬結果’本發明之銅製板條冷卻器中，未發現板 條本體1與給排水取出管2間的嫁接部以及密封板$中的損 傷。 另一方面，習知之銅製板條冷卻器中，板條本體丨與給 排水取出管2間的熔接部、以及與密封板5之鐵皮間的熔接 1〇部上，作用有約為容許應力2倍之熱應力，明顯可知給排水 取出管與密封板有產生破損之可能性。 產業上之可利用性 如刖述，依本發明之高爐用板條冷卻器，於高爐之爐 體或爐底採用冷卻效能優異之銅或銅合金製板條冷卻器 15時，可吸收伴隨高產出量高爐操作作業中，高爐爐體的熱 負載增加而產生的板條本體與鐵皮間之熱膨服差所引起的 應力，且可抑制板條本體與給排水取出管間之溶接部，以 及鐵皮與、、‘。排水取出管間之炫接部中產生的疲勞破壞而 可提供具有可耐長時間使用之可靠度高之構造的高爐爐體 20冷部用板條。因此’本發明對於鋼鐵產業上之可利用性而 言係極為有用者。 【圖式簡單說明】 第圖係顯不將本發明之板條配置於高爐爐壁上之態 樣圖。 15IX. INSTRUCTIONS: TECHNICAL FIELD OF THE INVENTION C FIELD OF THE INVENTION The present invention relates to a slab cooler for a blast furnace, which is configured to absorb stress caused by thermal expansion between the slat body and the iron sheet, in particular The stress acting on the welded portion between the water supply and drainage take-out pipe and the slat body can be minimized, and the user can be resistant to a long time. BACKGROUND OF THE INVENTION In the current blast furnace operation, a slat cooler is widely used (the following is also available) It is called a slat) as a means to cool the fireplace. In recent years, in the operation of blast furnace, as the output volume increases and the output efficiency increases, compared with the past, the heat load of the blast furnace body is increased. 'There is a need for a slat cooler that can more effectively cool the furnace. In this development, a slat of copper or copper alloy has been recently developed which is superior in thermal conductivity to conventional cast iron slats. The cooler is gradually becoming more suitable. However, when the slab cooler made of copper or copper alloy is applied to the blast furnace, the new problem that the known cast iron slats are not existing is becoming more and more significant. Since the scales of the scales are arranged in the model plate of the slat body in advance, the structure of the cooling tube and the slat body is integrated by casting, so that it can be up to the outer side of the iron sheet, and there is no slat body. The structure of the joint between the water supply and the drain pipe and the water supply and drain pipe. 3 - The 'slab cooler of the copper or the same alloy is as follows. After the η Ρ ' forms a cooling pipe in the slat body, the plate needs to be welded and joined. The water supply and discharge port of the strip body and the water supply and drainage pipe have a splicing portion in the vicinity of the slat body. The welded portion near the slat body in the slat cooler of the copper or steel alloy is exposed in the blast furnace operation When the inside of the furnace of the slat main body at a high temperature is in contact with the displacement caused by the difference in thermal expansion between the iron side of the slat main body for cooling and releasing heat, stress is concentrated, and occurs at the portion. Fatigue cracking, resulting in shortened life of the slat cooler. In general slat installation, as shown in Fig. 6, the slat body 1 is fixed to the iron sheet 6 by the mounting bolt 8 and the iron nut 9 The load is bulk, so that the load of the slat body 1 does not directly act on the water supply and drainage removal pipe 2. The water supply and drainage removal pipe 2 of the slat cooler of copper or copper alloy is fused to the slat body 1 as shown in Fig. 3 The water supply and drainage port. The opening for the iron sheet 6 penetrating the water supply and drainage pipe 2 is sealed by welding the water supply and drainage pipe 2 and the iron sheet 6 through the sealing plate 5, so that the gas in the furnace of the blast furnace is not leaked to the iron sheet. The conventional slats shown in Figures 3 and 6 are in thermal expansion between the inner side of the slat body and the side of the slab in the operation of the blast furnace, and thus the thermal expansion between the iron side and the iron sheet of the slat body. The displacement caused by the difference causes a stress change. At this time, the longitudinal or mounting bolt 8 can share the load of the slat body, and the stress fluctuation caused by the difference in thermal expansion cannot be absorbed. Therefore, the slab cooler made of copper or copper alloy In the middle, the stress fluctuation caused by the difference in the bulging in the operation of the blast furnace, (4) is the stress concentration portion, that is, the fusion portion between the metal pipe and the water supply and discharge pipe near the slat body becomes the occurrence of fatigue cracking. Part. Further, the sealing plate 5 which connects the water supply and drainage take-out pipe 2 and the iron sheet 6 is likely to be opened when the slat main body and the iron sheet are displaced due to a difference in thermal expansion, and although it has a function of reducing the iron sheet and the slats The water supply and drainage in the vicinity of the body takes out the stress of the welded portion between the tubes, but the sealing plate 5 itself is still damaged by the deformation caused by the repeated stresses, which may cause the gas in the furnace to leak to the outside. In the above-mentioned technical problem, there has been a method of joining a water supply and drainage pipe and a metal sheet through a telescopic tube having a retractability (for example, Japanese Laid-Open Patent Publication No. Sho 52-8553). In this method, as shown in Fig. 4, the bellows 7 is disposed to cover the water supply and drainage take-out pipe 2, and the water supply and drainage take-out pipe 2 and the iron sheet 6 are welded via the bellows 7. At this time, the sealing plate 5 on the outer periphery of the water supply and drainage take-out pipe 2 is welded to the end portion of the bellows 7 to be sealed, so that the gas in the blast furnace furnace does not leak to the outside of the iron sheet. According to the method, when the displacement is caused by the difference in thermal expansion between the slat body and the iron sheet, the tension can be absorbed by the expansion tube 7 in the direction in which the expansion or contraction is generated, thereby obtaining a difference in the thermal expansion difference. The effect of stress on the welded portion between the iron sheet and the water supply and drainage take-out pipe near the slat body, and the fatigue damage in the sealing plate 5. However, as shown in Fig. 4, the telescopic officer 7 is easy to make the expansion and contraction of the wrinkle structure or the like. The opposite surface of the telescopic tube 7 will have dust adhesion due to the use for many years, making the ship progress rapidly and unevenly. The structure of fatigue damage, so there is a problem on the surface of durability. Therefore, it is necessary to periodically replace the telescopic tube 7 so as to prevent the occurrence of perforations or cracks in the telescopic tube 7, and let the gas in the furnace leak to the outside, or simply repair the portion of the telescopic tube 7 where the through hole or crack is generated. Therefore, there is a problem that a large amount of labor is required, and there is a problem that productivity is lowered due to the shutdown of the blast furnace. Furthermore, due to deformation of the slat mounting bolts, etc., when the slat load acts on the welded portion between the slat main body and the water supply and drainage pipe, the welded portion between the slat main body and the water supply and drainage take-out pipe may be fatigue-damaged, and Leakage of cooling water 'has the danger of causing a major problem with water in the furnace. Moreover, as a method of attaching a conventional cast iron slat to a metal sheet, it is understood that the following is the case where the slats are quickly replaced by omitting the mounting bolt 8 and the nut 9 of the slat body 1. In the fifth and seventh figures, the protective tube 3 is placed on the slat body to cover the water supply and drainage take-out tube 2, and the comb box 4 is disposed around the iron opening to cover the protective tube 3, And the water supply and drainage take-out pipe 2 and the protective pipe 3, and between the comb-shaped box 4 and the protective pipe 3 are fixed by the filler 10 and the fixed block 11, respectively (refer to Japanese Patent Laid-Open Publication No. Hei 8). No. 225813). According to this method, the water supply and drainage take-out pipe 2 and the compliant pipe 3' can be fixed by the filler 10 and the like, and the rigidity of the water supply and drainage take-out pipe 2 can be increased, and the protective pipe 3 and the comb box can be fixed by the filler 10 or the like. 4. The mounting bolt 8 and the nut 9 of the slat body 1 can be omitted by supporting the load of the slat body as shown in FIG. The method can also be applied to longitudinal or copper or copper alloy strips. However, in this method, since the water supply and drainage take-out pipe 2, the protective pipe 3, and the comb-shaped case 4 are configured to be body-shaped, the displacement stress due to the thermal expansion difference between the slat body 1 and the iron sheet 6 cannot be absorbed. Moreover, there is a stress concentration situation in the refining part between the slat body 1 and the water supply and drainage take-out pipe 2, so that the possibility of fatigue damage is reversed. As described above, in recent years, the thermal load of the blast furnace body with the high-yield blast furnace operation operation has increased 'the inside of the slab main body and the iron sheet side, and the difference in thermal expansion between the iron sheet side and the iron sheet of the slat main body has expanded. In the welded portion between the slat main body and the water supply and drainage take-out pipe, the possibility of fatigue damage occurring in the welded portion between the water supply and drainage take-out pipe and the iron sheet is improved, but the conventional slats cannot be obtained to increase the slat life. The effect is the status quo. SUMMARY OF THE INVENTION In view of the foregoing state of the art, it is an object of the present invention to provide a slab cooler for a blast furnace which is capable of absorbing an increase in heat load of a blast furnace body in operation with a high throughput blast furnace. The stress caused by the difference in thermal expansion between the slat main body and the iron sheet, and the fatigue joint generated between the slat body and the water supply and drainage joint, and the weld between the iron sheet and the water supply and drainage take-out portion are resistant to length. High reliability constructor for time use. The present invention solves the above-mentioned technical problems, and the gist of the present invention is a slab cooler for a blast furnace, which is obtained by welding a water supply and drainage take-out pipe to a copper or copper alloy slat body, and the slat body and the blast furnace iron are borrowed A plurality of steel mounting bolts are fixed, wherein the protective tube is welded to the slat body to cover the water supply and drainage take-out pipe; and a comb-shaped box is provided on the outer surface of the opening formed on the iron sheet The cover tube is coated with the protective tube; one of the end portions of the side plate of the comb box is welded to the iron sheet; and the second side view of the side view shows the protection tube and comb shape of the strip for water supply and drainage of the present invention.接合 is the mediation of the joint between the slat body and the iron sheet. " 15 The other end of the plate is sealed by the mail on the outer peripheral surface of the protection tube. According to the present invention, the slab cooler for the furnace is cooled and tempered by a copper or steel alloy slab having excellent cooling performance in the furnace body or furnace of the blast furnace, and is capable of absorbing the blast furnace with high-output blast furnace operation t The slat body and the iron _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - Type: blast furnace body cooling with high reliability structure for long-term construction. Brief description of the drawing '' ° Fig. 1 shows the miscellaneous figure 3 of the slat of the present invention placed on the wall of the blast furnace A diagram showing the state of engagement between the slat main body and the iron sheet which are not mediated by the slat telescopic tube. Fig. 4 is a view showing a state of engagement between a slat main body and a metal sheet which are conventionally mediated by a slat telescopic tube. Fig. 5 is a view showing a state of engagement between a slat main body and a metal sheet which are conventionally mediated by a protective tube, a comb box and a filler of a slat water supply and drainage take-out pipe. The sixth circle shows a state in which a conventional slat that is interposed by a mounting bolt is placed on the wall of the blast furnace. Fig. 7 is a view showing a state in which a conventional slat which is not interposed by a mounting bolt is placed on a blast furnace wall. 20 1336353 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Fig. 1 is a schematic view showing a state in which a blast furnace body cooling plate body and a metal sheet of the present invention are connected to each other, and Fig. 2 is a schematic view showing a slat body of the present invention The joint state between the official, the word of guarantee, the comb box and the iron sheet. In the present invention, the slab cooler for the blast furnace is as shown in Figs. 1 and 2, and the 'σ drainage take-out pipe 2 is welded to the main body of the copper or copper alloy slat, and the slat body 1 and the blast furnace The iron sheet 6 is fixed by a plurality of steel mounting screws 8 . By making the slat body made of copper or a copper alloy, the thermal conductivity can be improved compared to the conventional slab body of cast iron, and the cooling water circulated in the cooling water pipe in the slat body can be used. The heat from the inside of the furnace of the slat body is effectively eliminated. Further, the load of the slat body 1 is supported by a plurality of steel mounting bolts 8. Although the steel mounting bolts 8 can share the weight of the slat body, there is no way to absorb the slat body! Stress changes caused by poor thermal expansion between the iron and the iron. Therefore, in the present invention, as shown in Figs. 1 and 2, the slab cooler for a blast furnace is configured such that the protective tube 3 is welded to the slat body sill to cover the water supply and drainage pipe 2, and On the outer surface of the iron sheet formed on the outer surface of the opening on the iron sheet, a comb-shaped box 4 is provided to cover the protective tube 3, and the iron sheet 6 is welded to one of the end portions of the side plates of the comb-shaped box 4, sealed by a seal The other side of the side plate is slidably attached to the outer periphery of the water supply and drainage pipe 2 by the plate 5. In the slat structure, since the protective tube 3 is welded to the slat body sill by means of covering the water supply and drainage take-out tube 2, the stress concentration portion, that is, the water supply and drainage port of the slats 11 1336353 body 1 and the water supply and drainage removal tube 2 The cross-sectional area in the vicinity of the welded portion is enlarged, and the weight of the portion can be shared by the protective tube. When the displacement due to the difference in thermal expansion occurs, the stress on the welded portion of the water supply and drainage take-out tube 2 can be reduced. 5 If the thickness of the tube of the protective tube is less than 5 mm, sufficient strength cannot be obtained, and if it exceeds 7 mm, the interval between the pipe and the water supply and drainage pipe becomes narrow and it is not easy to weld. Therefore, based on the reason that it can have sufficient strength and is easy to be welded, It should be ^ 5mm~7mm. Further, the material of the protective tube is made of carbon steel for high-temperature piping because it has strength and can be welded even when exposed to a high temperature. Further, in the opening portion formed in the iron sheet, the comb case 4 is disposed so as to cover the protective tube 3, and the water supply and drainage take-out tube 2 and the protective tube 3 are not directly welded to the iron sheet, and may be thermally expanded. The displacement state is performed, and the water supply and drainage removal pipe 2 and the protection pipe 3 are welded to the iron sheet 6 via the comb box 4, and when the displacement due to the difference in thermal expansion occurs, the comb case 4 is generated in the displacement direction 15. The deformation can thereby reduce the stress of the welded portion of the water supply and drainage take-out pipe 2. φ Further, since one of the end portions of the side plates of the comb case 4 is welded to the outer surface of the opening portion, and the other of the side plate end portions of the comb case 4 and the outer peripheral surface of the protective tube 3 are sealed. The plate 5 is welded, so that the gas system in the blast furnace is sealed by the side plates of the comb case 4 and the sealing plate 5 to prevent leakage to the outside of the iron 20 skin. Further, when the 'opening portion of the iron sheet 6' is displaced due to the difference in thermal expansion during the operation of the blast furnace, the longitudinal or water supply and drainage take-out tube 2 and the protective tube 3 are somewhat deformed, but are not in contact with the iron sheet and are freely available. The state of being moved, therefore, should have a sufficiently large opening diameter compared to the outer diameter of the protective tube 3. 12 1336353 Furthermore, the side plate and the sealing plate 5 constituting the comb-shaped box 4 are preferably metal plates such as steel plates having a thin plate thickness, and when there is a displacement due to a difference in thermal expansion during operation of the blast furnace, Shrink in the direction of displacement. If the length of the side plate is less than 40 mm, the length is too short to sufficiently absorb the displacement caused by the difference in thermal expansion of 5, but if it exceeds 120 mm, it is too long and interferes with the door surrounding device. For the above reasons, the length of the side plate is preferably 4〇mm~ 120mm. When the thickness of the side plate is less than 8 mm, it is too thin to be spliced. When it exceeds 10 mm, although it is not easily deformed, it does not absorb the difference in thermal expansion. Therefore, the thickness of the side plate is maintained by maintaining sufficient strength and being easily melted. It is preferably 8 mm to 10 mm, and if the thickness ' of the sealing plate 5 is less than 5 mm, it is too thin to be easily melted. When it exceeds 7 mm, it is not easily deformed but cannot absorb the difference in thermal expansion. Therefore, it is easy to maintain sufficient strength. For the reason of the fusion, the thickness of the sealing plate 5 15 is preferably 5 mm to 7 mm. Further, the material of the side plate and the sealing plate is preferably a normal carbon steel because it has sufficient strength and is easy to be spliced. Further, the inner space of the comb box and the sealing plate should not be filled with a filler casting or a refractory or the like, so that the comb box and the sealing plate are easily deformed and the heat expansion difference can be absorbed. Further, the method for producing a copper or copper alloy slab according to the present invention is not particularly limited, but it can be generally produced as follows. First, a wooden mold having the same shape as the slats is formed on the inside of the furnace and the outside of the furnace, respectively. The second 'the wooden mold is placed on the inside of the furnace corresponding to the slats and the furnaces on the furnace 13' and then poured into the sand. The third fixed sand is removed from the wood f and the frequency is made. When the sand mold of the sand is opened, it is set at the position of the sand mold. n, n. The inner side of the furnace is combined with the sand mold on the outside of the furnace, and the steel or steel alloy is injected into the mold. 5. After removing the sand mold after solidification, insert the same material as the copper slat material and pour the sand holes. Turn the water supply and drainage pipe to the water supply and drainage port, and turn the protection tube to the package I. There is also a manufacturing method in which a drain pipe is formed through a rolled copper plate or a rolled copper alloy plate having the same shape as the slats, and the unnecessary holes are embedded in the same material as the slat body. The plug is welded and sealed, and the protective tube is welded to cover the water supply and drainage take-out tube. EXAMPLES Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in Figs. 1 and 2, the copper plate is welded to the present invention. The circumference of the water supply and drainage removal pipe 2 on the body of the body is arranged The copper slat cooler of the protective tube 3 and the comb box 4, and the four places in the slat body are fixed to the iron of the blast furnace body by copper bolts and nuts. The effect of the copper slats is that a conventional copper slat cooler, that is, a water supply and drainage removal pipe 2 welded to a conventional copper slat body 1 by a sealing plate 5, is welded to the iron, and is similarly installed. On the iron sheet of the blast furnace body, and simulating the use of the copper slat cooler of the present invention and the conventional copper slat cooler for the blast furnace operation, the fusion between the slat body and the water supply and drainage removal pipe 2 and the sealing plate 5 Further, in the copper slat cooler of the present invention, the comb-shaped box is made of ordinary carbon steel having a thickness of 9 mm, and the sealing plate is made of ordinary carbon steel having a thickness of 6 mm. In the copper slat cooler of the invention, the grafting portion between the slat body 1 and the water supply and drainage take-out pipe 2 and the damage in the sealing plate $ are not found. On the other hand, in the conventional copper slat cooler, the slat body 丨Give row The welded portion between the take-up tube 2 and the welded portion of the iron plate of the sealing plate 5 exerts a thermal stress of about twice the allowable stress, and it is apparent that the water supply and drainage take-out tube and the sealing plate may be damaged. INDUSTRIAL APPLICABILITY As described above, the slab cooler for a blast furnace according to the present invention can be absorbed in a high-efficiency copper or copper alloy slat cooler 15 in a furnace body or a furnace bottom of a blast furnace. In the operation of the blast furnace operation, the heat load of the blast furnace body increases the stress caused by the difference between the heat expansion between the slat body and the iron sheet, and the fusion between the slat body and the water supply and drainage pipe can be suppressed, and The fatigue damage generated in the joint between the iron sheet and the water draining pipe can provide a slab for the cold portion of the blast furnace body 20 having a structure that can withstand high reliability for a long period of time. Therefore, the present invention It is extremely useful in terms of availability in the steel industry. BRIEF DESCRIPTION OF THE DRAWINGS The figure shows a state in which the slats of the present invention are not disposed on the wall of the blast furnace. 15
10 梳 圖。 配置 配10 comb figure. Configuration
本㈣叫祕排水取㈣之 形相料介的板條本體與鐵皮間之接合狀況圖。梳 _==，_縮…介-條本 與鐵條本體 …第5圖係顯示習知之以板條給排水取出管之保護管、 形摩目及填充物為中介之板條本體與鐵皮間的接合狀況 ^圖_謂f知之以絲螺㈣中介的板條 於南爐爐壁上之態樣圖。 第7_顯示將習知之未以安裝螺栓為中介的板條 置於尚爐爐壁上之態樣圖。 【主要元件符號說明】 1…板條本體 2.. .給排水取出管 3.. .保護營 4.. .梳形箱 5.. .密封板 6.. .鐵皮 7…伸縮管 8…安裝螺栓 9··.鐵皮螺帽 10...填充物 11…固定塊 16This (4) is called the drainage drainage (4) of the shape of the material between the slat body and the iron joint diagram. Comb _==, _ 缩 ... 介 - strip and iron strip body ... Figure 5 shows the slats between the slat body and the iron sheet The joint condition ^Fig. _ is the state diagram of the slats of the snail (4) on the wall of the south furnace. The seventh figure shows a state in which the conventional slats which are not interposed by the mounting bolts are placed on the wall of the furnace. [Description of main components] 1...Slat body 2.. Water supply and drainage removal pipe 3.. Protection camp 4... Comb box 5.. . Sealing plate 6.. Iron sheet 7... Telescopic tube 8... Mounting bolt 9··. tin nut 10...filler 11...fixing block 16