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They are flake aluminium. 預(yù)制前對鋼板的局部平面度應(yīng)進(jìn)行檢查,當(dāng)用直線樣板檢查時,間隙不應(yīng)大于 4mm; Before prefabrication check horizontality, clearance less than 4mm. 號料前,應(yīng)核對鋼板的材質(zhì)、規(guī)格,鋼板應(yīng)處于平放位置; Before cropping, check materials, specifications. 預(yù)制鋼板和構(gòu)件要標(biāo)明儲罐位號、名稱、規(guī)格、材質(zhì)。 底板預(yù)制 Prefabricate bottom plate 材質(zhì)為 的中幅板和邊緣板可以用氧 乙炔焰或機(jī)械加工; 材質(zhì)為 304L、 316L 的中幅板和邊緣板的可以用等離子切割機(jī)或機(jī)械加工。底板切割后,背面刷漆按圖紙要求進(jìn)行,不銹鋼板材不刷漆??紤]焊縫收縮,排板下料直徑按設(shè)計直徑放大 ~%; Draw typesetting sketches of bottom plate. Base plate shall protract typeset plot accord with the steel plates that have arrived. With respect to shrinkage of weld joint, diameter of the material to use shall be —% bigger than the design diameter。 中幅板寬度不得小于 1000mm,長度不得小于 2020mm; Channel plate width is not less than 1000mm。 底板任意相鄰焊縫之間距離不得小于 200mm; Distance between every twoweld joint on baseplate is not less than 200mm。 2 寬度 Diagonal difference AC、 BD、 EF 177。 their distance shall be 1/3 of the plate length and not be less than 500mm。 罐壁開孔接管或開孔接管補(bǔ)強(qiáng)板外緣與罐壁縱向焊縫之間的距離不得小于200mm,與環(huán)向焊縫之間的距離不得小于 100mm; The distance between tank wall open pipe and open reinforcement plate outer edge and tank wall longitudinal weld is not less than 100mm。 壁板尺寸允許偏差應(yīng)符合下表規(guī)定: Allowance deviation of shell size shall accord with following specification: 測量部位 Measure position 環(huán)縫對接 Circumferential joints butt welding (mm) 板長 Plate length AB (CD≥ 10m) 板長 Plate length AB (CD10m) 寬 度 Width 177。 1 長 度 Length 177。 對角線之差 Diagonal difference |ADBC| ≤ 3 ≤ 2 直線度 Alignment ≤ 1 ≤ 1 ≤ 2 ≤ 2 壁板在卷板機(jī)上進(jìn)行卷制,輥的軸線與壁板長邊相互垂直。壁板卷制后應(yīng)立置在平臺上檢查,垂直方向用直線樣板檢查間隙不得大于 1mm,水平方向用弧形樣板,其間隙不得大于 4mm; Shell plate shall upright lie on the platform to check with templet. For the vertical to check with straight templet and its gap is less than 1mm. For the level to check with arc templet and its gap is less than 4mm。 C A B D F E 上海 SECCO90 萬噸 /年乙烯工程 26 萬噸 /年丙烯腈 (AN)裝置 儲罐安裝 \焊接施工方案 中國石化集團(tuán)第五建設(shè)公司 Page 9 of 34 上海工程項目部 Edge preparation of shell plate adopts edge planner and the actual size shall accord with the design requirements. 拱頂預(yù)制 Prefabrication of domed roof 拱頂預(yù)制前依據(jù)施工拱頂圖繪制排板圖且符合下列規(guī)定: Draw typesetting sketches of domed roof accord with construction domed roof drawing before fabrication the domed roof and conform to following provision: 頂板任意兩條相鄰焊縫的間距不得小于 200mm; Distance between every two conterminous weld joint on domed roof is not less than 200mm。 拱頂加強(qiáng)肋,應(yīng)進(jìn)行冷煨加工,成型后用弧形樣板檢查,其間隙不得大于 2mm; Domed roof reinforce rib shall cold roast and check with arc templet after formation, its gap is less than 2mm。 加強(qiáng)肋與頂板組焊應(yīng)在拱頂支架上進(jìn)行,并按圖樣要求,先放置徑向加強(qiáng)肋,后放置環(huán)向加強(qiáng)肋。 6. 安 裝 Installation 采用目前國內(nèi)較先進(jìn)的液壓頂升倒裝法施工工藝,在罐內(nèi)沿圓周設(shè)置提升架,用托架將罐體、罐壁脹圈與液壓頂升機(jī)連接在一起,在罐內(nèi)設(shè)液壓泵站,用膠管通過液壓元件把各液壓頂升裝置連起來,在高壓油的作用下將罐體升起。底板、壁板和頂板用 50 噸履帶式吊車吊裝。 operation is steady and reliable。 effect is clearly increased。 上海 SECCO90 萬噸 /年乙烯工程 26 萬噸 /年丙烯腈 (AN)裝置 儲罐安裝 \焊接施工方案 中國石化集團(tuán)第五建設(shè)公司 Page 10 of 34 上海工程項目部 Before laying carbon tank soleplate, its underside shall paint according to design requirements, and not paint in 40mm from each edge. 在基礎(chǔ)上劃出兩條互相垂直的中心線,并且劃出每塊中幅板的位置,這樣有利于鋪設(shè); 先鋪罐底中心板,在中心板上劃十字線,十字線與罐基礎(chǔ)中心線重合,在十字線中心打上樣沖眼,并應(yīng)做出明顯的十字標(biāo)記; Draw reticle on tank bottom center plate according to typeset chart, the reticle and tank foundation centerline overlaps. Drilling in tank center and marking. 由罐底中心板向兩端逐塊鋪設(shè)中間一行中幅板,然后從中間一行板開始,向兩側(cè)逐行鋪設(shè)中幅板,每行中幅板應(yīng)由中間向兩側(cè)依次鋪設(shè);中幅板搭接長縫可點(diǎn)焊或用角鋼斜鐵固定, 每塊板不少于 2 處。 Lay channel plate from tank bottom center plate to both side. Welded before the third plate laid. 鋪設(shè)時,宜先鋪設(shè)中幅板,后鋪設(shè)邊緣板。 5mm。 5mm。 Spotwelding the cushion plate on the same side of edge plate. 弓形板邊緣板的對接接頭采用不等間隙,外側(cè)間隙為 e1=4~5mm,內(nèi)側(cè)間隙為e2=7~8mm; Butt connection of arc rim plate adopt unequal gap, outer gap is e1=4~5mm,inner gap is e2=7~8mm。 Draw top shell installation circle on tank bottom, center is tank center, radius accord with following: 最上二(三)帶板施工完,在罐內(nèi)安裝液壓頂升裝置。 南 S 270186。 東 E 0186。K 取 (安全系數(shù)) appurtenance weight approximately 4000Kg, K approximately ( Safety coefficient) 名 稱 Name 位 號 Item 全容積Specification( m3) 規(guī) 格 Type( mm) 提升重量 Lifting weight( t) 頂升機(jī)數(shù)量Number of lift machine( set) 丙烯腈成品中間罐An product rundown tanks 4001 A/B/C 1000 Φ 11000x10670 4 粗丙烯腈罐Crude AN tank 4002 3580 Φ 16750x16250 8 不合格丙烯腈罐Offspec AN tank 4003 3580 Φ 16750x16250 8 廢水罐 Waste water tank 6201 1000 Φ 11800x10000 4 廢水廢有機(jī)物罐 4SE bottoms tank 6202 2350 Φ 15000x13300 6 硫銨凝液罐AMS sulphate 7202 2209 Φ 15000x12500 6 稀硫銨溶液罐AMS solution tank 7201 7000 Φ 26400x13000 12 液壓千斤頂選用 BY160 型,額定起重量為 16 噸,液壓行程為 100mm。 Hydraulic pressure lift machine’s type is ’s rating 16 ton, travel 100mm. Nominal lift weight of our pany’s hydraulic pressure lift machine is 16 ton. Hydraulic pressure journey is distance of rank jack inside of shell is 5m~ 8m. 千斤頂?shù)膶?shí)際使用承受重量 :Q=Q 額定 xη,其中η = Q== The actual support weight of jack : Q=Q rating xη , η = D7201 用千斤頂數(shù)量=提升重量/千斤頂?shù)膶?shí)際使用承受重量 = = ,取 12 個 液壓頂升裝置的準(zhǔn)備 Prepare before construction ①逐臺檢查液壓千斤頂和閥門、接 頭等; Each hydraulic pressure jack, valve and joint etc must be checked. ②逐根檢查油管、分配管和接頭閥門,清潔并吹除后采取措施防止灰塵、砂等進(jìn)入管內(nèi); Each oil pipe and valve must be checked, cleaned, blown and adopted some works to prevent dust and sand entering pipe inside. ③全面檢查液壓控制臺,試驗(yàn)操作各電鈕 、信號顯示器等,使之處于完好狀態(tài),油箱、油路干凈; Hydraulic console must be total checked, each electric button and signal display must 上海 SECCO90 萬噸 /年乙烯工程 26 萬噸 /年丙烯腈 (AN)裝置 儲罐安裝 \焊接施工方案 中國石化集團(tuán)第五建設(shè)公司 Page 12 of 34 上海工程項目部 be operated for test, ensure them to be plete and good, oil box and oil road is clean. ④逐根檢查立柱的不直度和截面誤差; Nonstraight and section error of each pole must be ch