發布時間:2024-01-01 01:25:13瀏覽數:
不銹鋼管(guan)換熱管(guan)規格(ge)參數及(ji)(ji)應用凝汽器(qi)是汽輪發電機要的(de)冷設(she)備,由于江河湖海水系的(de)污(wu)染(ran),使(shi)凝汽器(qi)冷卻管(guan)腐蝕(shi)速度加劇(ju),造(zao)(zao)凝汽器(qi)頻繁發生泄(xie),嚴影(ying)響正生產。別是銅管(guan)易受氨離(li)子、硫化物等腐蝕(shi)而造(zao)(zao)泄(xie),同時(shi)由于銅管(guan)內壁不光滑(hua)易附著(zhu)微生物及(ji)(ji)各(ge)種污(wu)垢,使(shi)銅管(guan)的(de)遙遙降低。
不銹(xiu)鋼換熱(re)管(guan)要用(yong)于火(huo)力發電、化工(gong)、鋼鐵等企業的加(jia)熱(re)器(qi)(qi)(qi)(qi),冷油器(qi)(qi)(qi)(qi),冷水器(qi)(qi)(qi)(qi),取樣(yang)冷卻(que)器(qi)(qi)(qi)(qi),抽氣冷卻(que)器(qi)(qi)(qi)(qi),換熱(re)器(qi)(qi)(qi)(qi),軸封加(jia)熱(re)器(qi)(qi)(qi)(qi),壓加(jia)熱(re)器(qi)(qi)(qi)(qi),低壓加(jia)熱(re)器(qi)(qi)(qi)(qi),壓力容器(qi)(qi)(qi)(qi),空(kong)氣冷卻(que)器(qi)(qi)(qi)(qi)。產規格:直徑(jing)Ф12~Ф76mm,壁厚0.2~3.0mm,長度分尺和(he)不尺兩(liang)種。用(yong)的材質有:304、304L、316、316L、317、317L。
凝(ning)汽器不銹(xiu)鋼(gang)焊接(jie)鋼(gang)管(guan)是(shi)引進(jin)制管(guan)設(she)備制造而,與(yu)管(guan)材相(xiang)當或略(lve)強(qiang),焊縫金相(xiang)織與(yu)母材樣,強(qiang)度(du)等機械能(neng)略(lve)。由于(yu)帶材厚薄均(jun)勻,表面光滑平整,其確(que)比同種材質的冷撥(bo)、熱軋縫不銹(xiu)鋼(gang)管(guan)。延伸率于(yu)35%,并且(qie)硬度(du)小,易于(yu)脹接(jie)。
產設計(ji)
a.可與1MW-350MW汽輪(lun)機(ji)相(xiang)配套(tao),冷卻(que)面積范(fan)圍(wei)從200㎡-20000㎡;b.水室內(nei)部(bu)及管(guan)(guan)板、隔板采用(yong)(yong)(yong)KHS-1型(xing)凝(ning)汽器(qi)防腐膠進行防腐處理;c.管(guan)(guan)板采用(yong)(yong)(yong)Q235或不(bu)銹鋼復合板;d.冷卻(que)管(guan)(guan)材料(liao)采用(yong)(yong)(yong)不(bu)銹鋼;e.不(bu)銹鋼冷卻(que)管(guan)(guan)規格(ge):外(wai)徑16mm-30mm,壁厚0.5mm-0.8mm;不(bu)銹鋼管(guan)(guan)原材料(liao)采用(yong)(yong)(yong)日韓等鋼帶,從頭上(shang)遙遙;采用(yong)(yong)(yong)ASTM標準(zhun)生產和(he)測(ce),以ISO刪除關系體系進行面的(de)(de)過(guo)程(cheng)管(guan)(guan)理。(3)服(fu)(fu)務模式a.根(gen)據用(yong)(yong)(yong)戶現場(chang)情況,協助(zhu)用(yong)(yong)(yong)戶確凝(ning)汽器(qi)參(can)數;b.詳細核算每(mei)臺凝(ning)汽器(qi)的(de)(de)能(neng)參(can)數,提(ti)(ti)出設計方案;c.協助(zhu)用(yong)(yong)(yong)戶了解內(nei)外(wai)相(xiang)關信息,在(zai)件、材質和(he)技術(shu)規范(fan)上(shang)具有的(de)(de)瞻;d.制(zhi)(zhi)嚴格(ge)的(de)(de)時(shi)間節,及時(shi)向(xiang)用(yong)(yong)(yong)戶提(ti)(ti)供(gong)技術(shu)料(liao)和(he)設計、制(zhi)(zhi)造進展情況;e.按時(shi)、期(qi)安(an)排用(yong)(yong)(yong)戶來我方現場(chang)進行參(can)觀考(kao)察;f.在(zai)施工過(guo)程(cheng),根(gen)據用(yong)(yong)(yong)戶要(yao)求(qiu)派駐經驗豐富的(de)(de)現場(chang)服(fu)(fu)務人員,指導安(an)裝(zhuang)、調試、處理所供(gong)設備在(zai)安(an)裝(zhuang)調試過(guo)程(cheng)出現的(de)(de)任何技術(shu)問題(ti);g.施工完并投(tou)入(ru)遙遙后(hou),提(ti)(ti)供(gong)費(fei)的(de)(de)技術(shu)咨詢和(he)指導;
出勢
我公司從事火(huo)力發電(dian)廠凝(ning)汽(qi)器(qi)換(huan)(huan)管(guan)(guan)(guan)不銹鋼(gang)管(guan)(guan)(guan)換(huan)(huan)熱管(guan)(guan)(guan)、凝(ning)汽(qi)器(qi)換(huan)(huan)管(guan)(guan)(guan)不銹鋼(gang)管(guan)(guan)(guan)換(huan)(huan)熱管(guan)(guan)(guan)設(she)計(ji)、制(zhi)造(zao)、技(ji)術(shu)改(gai)(gai)造(zao)、安裝及(ji)冷(leng)卻(que)管(guan)(guan)(guan)換(huan)(huan)、防腐封等工(gong)(gong)(gong)(gong)程(cheng)已有經驗(yan)。下設(she)工(gong)(gong)(gong)(gong)程(cheng)部和3支(zhi)業(ye)(ye)的凝(ning)汽(qi)器(qi)換(huan)(huan)管(guan)(guan)(guan)不銹鋼(gang)管(guan)(guan)(guan)換(huan)(huan)熱管(guan)(guan)(guan)改(gai)(gai)造(zao)施(shi)(shi)工(gong)(gong)(gong)(gong)隊(dui)伍,現有業(ye)(ye)技(ji)術(shu)人(ren)(ren)員7名(ming),種作業(ye)(ye)技(ji)術(shu)工(gong)(gong)(gong)(gong)人(ren)(ren)50余名(ming),裝備(bei)有套的用測儀器(qi)。公司技(ji)術(shu)人(ren)(ren)員根據用戶機(ji)容量等具體現場情況,設(she)計(ji)出(chu)的施(shi)(shi)工(gong)(gong)(gong)(gong)方案(an),并由(you)經驗(yan)豐(feng)富的業(ye)(ye)人(ren)(ren)員按(an)照合同規(gui)的工(gong)(gong)(gong)(gong)程(cheng)內容、工(gong)(gong)(gong)(gong)藝(yi)要求、安措施(shi)(shi)及(ji)電(dian)力工(gong)(gong)(gong)(gong)程(cheng)建設(she)標準DL5011-92進行施(shi)(shi)工(gong)(gong)(gong)(gong),遙遙工(gong)(gong)(gong)(gong)程(cheng)、按(an)時(shi)、完完工(gong)(gong)(gong)(gong),在長(chang)期(qi)凝(ning)汽(qi)器(qi)換(huan)(huan)管(guan)(guan)(guan)不銹鋼(gang)管(guan)(guan)(guan)換(huan)(huan)熱管(guan)(guan)(guan)、凝(ning)汽(qi)器(qi)換(huan)(huan)管(guan)(guan)(guan)不銹鋼(gang)管(guan)(guan)(guan)換(huan)(huan)熱管(guan)(guan)(guan)設(she)計(ji)、技(ji)術(shu)改(gai)(gai)造(zao)和冷(leng)卻(que)管(guan)(guan)(guan)換(huan)(huan)過程(cheng)積累了豐(feng)富的經驗(yan),施(shi)(shi)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)期(qi)短,工(gong)(gong)(gong)(gong)程(cheng)本(ben)低,施(shi)(shi)工(gong)(gong)(gong)(gong)穩(wen)。
工(gong)作原(yuan)理
凝汽(qi)器(qi)-汽(qi)輪機(ji)凝汽(qi)器(qi)換熱管(guan)(guan)總(zong)結內外設(she)計、運(yun)行經(jing)驗,與遙遙銅管(guan)(guan)相比,焊接不銹(xiu)鋼換熱管(guan)(guan)有如下勢:
1、不銹鋼(gang)換熱管(guan)比銅管(guan)腐(fu)蝕(shi),抗振和磨能(neng),遙(yao)遙(yao)是銅管(guan)的三(san)倍(bei);
2、不(bu)易(yi)沾污,不(bu)易(yi)結垢(gou),可達30年(nian)~40年(nian);
3、雖然不銹鋼的導(dao)熱能比銅(tong)差(cha),但(dan)管壁熱阻只占總熱阻的3%~5%。由于管內(nei)水速提(ti)、清潔(jie)系數加(jia)、壁厚減小(xiao),從而使(shi)得不銹鋼的熱能于銅(tong)合金;
4、內薄壁焊接不銹鋼(gang)管(guan)制造技術、供貨的種規(gui)(gui)格、能(neng)指標和驗手、規(gui)(gui)模等都(dou)達到了(le)水平(ping);
5、不銹(xiu)(xiu)鋼管(guan)(guan)(guan)(guan)的熱(re)導系(xi)(xi)(xi)數(shu)比銅管(guan)(guan)(guan)(guan)低,但通(tong)過減小壁(bi)(bi)(bi)厚(hou)使它們的熱(re)導系(xi)(xi)(xi)數(shu)的差縮小,由于(yu)不銹(xiu)(xiu)鋼管(guan)(guan)(guan)(guan)內壁(bi)(bi)(bi)比銅管(guan)(guan)(guan)(guan)光滑,對(dui)流換熱(re)系(xi)(xi)(xi)數(shu)比銅管(guan)(guan)(guan)(guan),不銹(xiu)(xiu)鋼管(guan)(guan)(guan)(guan)外壁(bi)(bi)(bi)比銅管(guan)(guan)(guan)(guan)光滑,凝結放熱(re)系(xi)(xi)(xi)數(shu)比銅管(guan)(guan)(guan)(guan),根據臺機的測試和計算,壁(bi)(bi)(bi)厚(hou)為0.7mm的不銹(xiu)(xiu)鋼管(guan)(guan)(guan)(guan)比壁(bi)(bi)(bi)厚(hou)為1mm的銅管(guan)(guan)(guan)(guan)的總體熱(re)系(xi)(xi)(xi)數(shu)2.124%左右;
6、隨著運行(xing)時(shi)間的(de)(de)(de)增長,不(bu)銹鋼(gang)(gang)管(guan)的(de)(de)(de)總體(ti)(ti)熱系數下降很緩慢,而銅(tong)管(guan)的(de)(de)(de)總體(ti)(ti)熱系數下降速度比不(bu)銹鋼(gang)(gang)管(guan)得。從長遠考慮(lv),遙(yao)遙(yao)不(bu)銹鋼(gang)(gang)管(guan)整體(ti)(ti)上提(ti)機的(de)(de)(de)經濟而易(yi)見,同(tong)時(shi)也提(ti)了機的(de)(de)(de)安。
1、熱能異,由(you)于采用(yong)壁厚0.5-0.8mm薄壁材料,提(ti)換熱能,在相同的換熱面(mian)積(ji)下,約為銅(tong)管的1.2~1.30倍.
2、抗蝕(shi)能強,蝕(shi)、氨蝕(shi)和般腐蝕(shi),遙遙可達二十年以上。
3、由(you)于不銹鋼材料為(wei)TP304、TP316L等能合金鋼,表面具(ju)有(you)很的(de)強(qiang)度,管子(zi)內壁光(guang)滑,使得(de)其邊(bian)界層流底層厚度減薄,因此具(ju)有(you)很強(qiang)的(de)溫蒸汽的(de)沖蝕能。
4、管(guan)子的剛明提,抗振(zhen)能。
5、強化(hua)換熱管,提了抗結垢能。
6、裝管(guan)工藝能,采(cai)用的(de)脹(zhang)管(guan)工藝,外徑(jing)的(de)公差與鋼管(guan)致,不(bu)需要改(gai)變管(guan)板孔的(de)加工公差,利于直接(jie)選(xuan)用,別(bie)方便機銅(tong)管(guan)換為不(bu)銹鋼換熱(re)管(guan)。
7、經濟,在同等(deng)換熱面積(ji)下,本(ben)目(mu)約為銅(tong)管的60%左右,可(ke)直(zhi)接進行不銹(xiu)鋼換管。
8、不銹鋼管(guan)由度自動化(hua)制管(guan)設備,通過自身蝕溶(rong)焊(han)接,翻卷形(xing),在任(ren)何金屬填充(chong)物下,充(chong)入氣體(ti)保(bao)護(hu)(管(guan)子內外側(ce))焊(han)接而(er),焊(han)接方式為TIG工藝(yi),并(bing)作在固溶(rong)渦流探傷(shang)。
9、為了(le)消(xiao)除管(guan)子的應力,在保護氣體,以(yi)1040℃溫進(jin)行(xing)熱處理,也可根據需要進(jin)行(xing)時效振動處理。
10、所有(you)鋼管逐(zhu)支進(jin)行水壓氣驗,氣壓試驗至10Mpa,10秒鐘降壓。
11、管出廠逐支進(jin)行損渦流探傷測,頻率為10-30千赫。
12,外徑偏差(cha)般(ban)為(wei)±0.10mm,壁(bi)厚偏差(cha)±10%,長度偏差(cha)±5mm。
13、所有(you)管子長用(yong)通規(gui)查。
14、原(yuan)材料進廠和管發貨都是通過測并出具測報告。
不銹(xiu)鋼換熱(re)管材料(liao) | O | SI | MN | P | S | NI | CR | MO | n-2000 | n-4200 | |
304≤ | ≤0.080 | 0.75 | 2.00 | 0.040 | 0.030 | 8.00-11.00 | 18.00-20.00 | - | 2000 | 4200 | |
304L≤ | 0.035 | 0.75 | 2.00 | 0.040 | 0.030 | 8.00-13.00 | 18.00-20.00 | - | |||
316 ≤ | 0.080 | 0.75 | 2.00 | 0.040 | 0.030 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | 8300 | 9600 | |
316L≤ | 0.035 | 0.75 | 2.00 | 0.040 | 0.030 | 10.00-15.00 | 16.00-18.00 | 2.00-3.00 | 4500 | 7043 | |
N | O | H | FC | O | AI | V | 3174 | 4150 | 4680 | ||
不銹(xiu)鋼換熱(re)管∠ | ∠0.02 | 0.05 | 0.015 | 0.25 | 0.12 | 2.5-3.5 | 2.0-3.0 | ||||
不(bu)銹鋼(gang)換熱管 型號 | |||||||||||
1 | Φ14×0.5 | Φ14×0.6 | Φ14×0.7 | Φ14×0.8 | |||||||
2 | Φ15×0.5 | Φ15×0.6 | Φ15×0.7 | Φ15×0.8 | |||||||
3 | Φ16×0.5 | Φ16×0.6 | Φ16×0.7 | Φ16×0.8 | |||||||
4 | Φ18×0.5 | Φ18×0.6 | Φ18×0.7 | Φ18×0.8 | |||||||
5 | Φ19×0.5 | Φ19×0.6 | Φ19×0.7 | Φ19×0.8 | |||||||
6 | Φ20×0.5 | Φ20×0.6 | Φ20×0.7 | Φ20×0.8 | Φ20×1.0 | ||||||
7 | Φ22×0.5 | Φ22×0.6 | Φ22×0.7 | Φ22×0.8 | Φ22×1.0 | Φ22×1.2 | |||||
8 | Φ25×0.5 | Φ25×0.6 | Φ25×0.7 | Φ25×0.8 | Φ25×1.0 | Φ25×1.2 | Φ25×1.5 | ||||
9 | Φ26×0.5 | Φ26×0.6 | Φ26×0.7 | Φ26×0.8 | Φ28×1.0 | Φ28×1.2 | Φ28×1.5 | ||||
10 | Φ30×0.6 | Φ30×0.7 | Φ30×0.8 | Φ30×1.0 | Φ30×1.2 | Φ30×1.5 | |||||
11 | Φ32×0.7 | Φ32×0.8 | Φ32×1.0 | Φ32×1.2 | Φ32×1.5 |
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