由于鋼波紋涵管在制造過程中的壁厚減薄,實際壁厚與名義壁厚有所差異,名義波形與實際波形也存在較大差別,這樣使波紋涵管由于尺寸和形狀不均勻而產生應變集中的現象。石油系統中,油田與煉油廠及油碼頭的輸油管線上均使用金屬軟管柔性連接。
鋼波紋涵管對道路安全(quan)運行有重要作用
鋼波(bo)(bo)紋涵(han)管(guan)在這些管(guan)道(dao)上可以起到消除噪(zao)音,抗震(zhen)動的功(gong)能。波(bo)(bo)紋涵(han)管(guan)的成形(xing)前后院,表面(mian)積發生了(le)變化(hua)。其(qi)波(bo)(bo)峰和波(bo)(bo)谷(gu)處因冷擠壓(ya)而產(chan)生加工硬(ying)化(hua)現象,它(ta)可以提高材料(liao)的疲勞(lao)極限(xian),但波(bo)(bo)紋涵(han)管(guan)在制(zhi)造過(guo)程(cheng)中是兩向拉(la)伸的,預(yu)拉(la)伸同時(shi)降低了(le)材料(liao)的延性,隨著(zhu)冷軋(ya)縮量(liang)的增加,鋼的強(qiang)度(du),屈服點,硬(ying)度(du)增大,延伸率、斷面(mian)收(shou)縮率,沖(chong)擊韌性下井。
鐵(tie)路(lu)鋼波紋管
尺寸變異的影(ying)響鋼(gang)鐵高爐(lu)上(shang)多(duo)處(chu)部位選用(yong)(yong)金(jin)屬(shu)(shu)(shu)軟(ruan)(ruan)管,如爐(lu)頂排壓系(xi)統管道中的軟(ruan)(ruan)連(lian)(lian)接,煤氣導出(chu)管中的軟(ruan)(ruan)連(lian)(lian)接,各(ge)個部位都需要用(yong)(yong)到金(jin)屬(shu)(shu)(shu)軟(ruan)(ruan)連(lian)(lian)接,金(jin)屬(shu)(shu)(shu)軟(ruan)(ruan)連(lian)(lian)接在這些熱(re)膨(peng)脹管路中起到位移補償器作用(yong)(yong)。用(yong)(yong)于火力發(fa)電(dian)站(zhan)站(zhan)內網(wang)與外(wai)網(wang)管線的金(jin)屬(shu)(shu)(shu)軟(ruan)(ruan)連(lian)(lian)接,還用(yong)(yong)于發(fa)電(dian)機組的減震,消除噪(zao)音,城(cheng)市供熱(re)管網(wang)系(xi)統也(ye)使用(yong)(yong)金(jin)屬(shu)(shu)(shu)軟(ruan)(ruan)連(lian)(lian)接。
對管(guan)道(dao)的安全(quan)運行也有較大作(zuo)用。量(liang)固(gu)定支架之間(jian)蒸汽(qi)直(zhi)埋管(guan)道(dao)的縱剖(pou)面示意圖。以前通(tong)常把(ba)靠近固(gu)定支架安裝(zhuang)的波(bo)(bo)(bo)紋補(bu)(bu)償器成為單(dan)(dan)向波(bo)(bo)(bo)紋補(bu)(bu)償器(因此此時(shi)的波(bo)(bo)(bo)紋補(bu)(bu)償器單(dan)(dan)側(ce)吸收(shou)管(guan)道(dao)熱(re)膨脹),把(ba)安裝(zhuang)在兩固(gu)定支架的管(guan)段中間(jian)處的波(bo)(bo)(bo)紋補(bu)(bu)償器成為雙向波(bo)(bo)(bo)紋補(bu)(bu)償器(因為此時(shi)的波(bo)(bo)(bo)紋補(bu)(bu)償器雙側(ce)吸收(shou)管(guan)道(dao)熱(re)膨脹)。(hanihanbj.com)
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