二手20立方不銹鋼儲罐

套筒(tong)式罐壁板(ban)環(huan)向焊縫(feng)采用(yong)搭接，縱向焊縫(feng)為對接。拱頂(ding)儲罐多(duo)采用(yong)該形式，其優點是便于各圈壁板(ban)組對，采用(yong)倒裝法施工比(bi)較(jiao)安全(quan)。

直線式罐(guan)壁(bi)板環向焊縫為對(dui)接。優點是罐(guan)壁(bi)整體自上而下(xia)直徑相同，特別(bie)適(shi)用于內(nei)浮頂(ding)儲(chu)罐(guan)，但組(zu)對(dui)安裝要求較高、難度亦較大。

罐頂(ding)(ding)(ding)：罐頂(ding)(ding)(ding)有多塊(kuai)扇(shan)形板(ban)組對焊(han)接(jie)而成(cheng)球冠(guan)狀，罐頂(ding)(ding)(ding)內側采(cai)用(yong)扁鋼(gang)制(zhi)成(cheng)加強筋(jin)，各個扇(shan)形板(ban)之間采(cai)用(yong)搭接(jie)焊(han)縫，整個罐頂(ding)(ding)(ding)與罐壁板(ban)上部的(de)角鋼(gang)圈(quan)（或(huo)稱鎖口(kou)）焊(han)接(jie)成(cheng)一體。

浮頂式

浮(fu)頂(ding)儲(chu)罐(guan)是由漂浮(fu)在介(jie)質表面(mian)上的(de)浮(fu)頂(ding)和(he)立式圓(yuan)柱形(xing)罐(guan)壁所構成。浮(fu)頂(ding)隨罐(guan)內(nei)介(jie)質儲(chu)量的(de)增(zeng)加或減(jian)少而升降，浮(fu)頂(ding)外緣與(yu)罐(guan)壁之間(jian)有環(huan)形(xing)密封裝置，罐(guan)內(nei)介(jie)質始(shi)終被內(nei)浮(fu)頂(ding)直(zhi)接(jie)覆(fu)蓋，減(jian)少介(jie)質揮發。

罐底：浮頂罐的容積一般都(dou)比較大，其底板均采(cai)用弓形邊緣板。

罐壁(bi)：采用(yong)直線式罐壁(bi)，對(dui)接焊(han)縫(feng)宜打磨光滑，保證內表面(mian)平(ping)整。浮頂儲罐上部(bu)為(wei)敞(chang)口，為(wei)增加壁(bi)板(ban)剛度，應根據所在(zai)地區的風(feng)(feng)載大小，罐壁(bi)頂部(bu)需設(she)置抗風(feng)(feng)圈(quan)梁和加強(qiang)圈(quan)。

浮(fu)(fu)頂(ding)(ding)：浮(fu)(fu)頂(ding)(ding)分為單盤(pan)式浮(fu)(fu)頂(ding)(ding)、雙盤(pan)式浮(fu)(fu)頂(ding)(ding)和浮(fu)(fu)子式浮(fu)(fu)頂(ding)(ding)等形式。

單盤式(shi)浮頂(ding)(ding)(ding)：由(you)若干個獨立艙室組成環(huan)形(xing)浮船，其環(huan)形(xing)內側(ce)為單盤頂(ding)(ding)(ding)板(ban)。單盤頂(ding)(ding)(ding)板(ban)底部設有多道環(huan)形(xing)鋼圈加固。其優(you)點是造價低、好維修。

二手20立方不銹鋼儲罐雙盤式浮頂：由上盤板(ban)(ban)、下盤板(ban)(ban)和(he)(he)船(chuan)艙邊緣(yuan)板(ban)(ban)所組(zu)成(cheng)，由徑(jing)向(xiang)隔(ge)(ge)板(ban)(ban)和(he)(he)環向(xiang)隔(ge)(ge)板(ban)(ban)隔(ge)(ge)成(cheng)若干(gan)獨立的環形艙。其(qi)優點是浮力(li)大、排水(shui)效果好。

內浮頂式

內(nei)浮(fu)(fu)(fu)頂(ding)(ding)(ding)儲(chu)(chu)罐(guan)(guan)(guan)是(shi)在拱(gong)頂(ding)(ding)(ding)儲(chu)(chu)罐(guan)(guan)(guan)內(nei)部增(zeng)設浮(fu)(fu)(fu)頂(ding)(ding)(ding)而成，罐(guan)(guan)(guan)內(nei)增(zeng)設浮(fu)(fu)(fu)頂(ding)(ding)(ding)可(ke)減少(shao)介(jie)質的(de)(de)(de)(de)揮發損耗(hao)，外部的(de)(de)(de)(de)拱(gong)頂(ding)(ding)(ding)又可(ke)以防止(zhi)雨(yu)水、積(ji)雪及灰塵等(deng)進入罐(guan)(guan)(guan)內(nei)，保(bao)證罐(guan)(guan)(guan)內(nei)介(jie)質清(qing)潔。這(zhe)種(zhong)儲(chu)(chu)罐(guan)(guan)(guan)主要用(yong)于儲(chu)(chu)存(cun)輕質油，例如汽油、航(hang)空(kong)煤油等(deng)。內(nei)浮(fu)(fu)(fu)頂(ding)(ding)(ding)儲(chu)(chu)罐(guan)(guan)(guan)采用(yong)直線式罐(guan)(guan)(guan)壁，壁板對接(jie)焊制，拱(gong)頂(ding)(ding)(ding)按拱(gong)頂(ding)(ding)(ding)儲(chu)(chu)罐(guan)(guan)(guan)的(de)(de)(de)(de)要求制作(zuo)。國內(nei)的(de)(de)(de)(de)內(nei)浮(fu)(fu)(fu)頂(ding)(ding)(ding)有兩種(zhong)結(jie)構：一(yi)種(zhong)是(shi)與浮(fu)(fu)(fu)頂(ding)(ding)(ding)儲(chu)(chu)罐(guan)(guan)(guan)相同的(de)(de)(de)(de)鋼制浮(fu)(fu)(fu)頂(ding)(ding)(ding)；另一(yi)種(zhong)是(shi)拼裝成型(xing)的(de)(de)(de)(de)鋁合金浮(fu)(fu)(fu)頂(ding)(ding)(ding)。