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補償(chang)(chang)器(qi)(qi)習慣上也(ye)叫膨脹節,或伸(shen)縮(suo)節。由(you)(you)構成(cheng)其(qi)工(gong)作(zuo)(zuo)(zuo)主體的波紋(wen)管(guan)(guan)(guan)(一種(zhong)彈(dan)性(xing)元件(jian))和端管(guan)(guan)(guan)、支(zhi)架(jia)、法蘭、導管(guan)(guan)(guan)等(deng)(deng)附件(jian)組成(cheng)。 屬于(yu)一種(zhong)補償(chang)(chang)元件(jian)。利用(yong)其(qi)工(gong)作(zuo)(zuo)(zuo)主體波紋(wen)管(guan)(guan)(guan)的有效伸(shen)縮(suo)變形(xing),以吸(xi)收(shou)管(guan)(guan)(guan)線(xian)、導管(guan)(guan)(guan)、容器(qi)(qi)等(deng)(deng)由(you)(you)熱(re)脹冷縮(suo)等(deng)(deng)原因而產(chan)生的尺(chi)寸(cun)變化,或補償(chang)(chang)管(guan)(guan)(guan)線(xian)、導管(guan)(guan)(guan)、容器(qi)(qi)等(deng)(deng)的軸向(xiang)、橫向(xiang)和角向(xiang)位(wei)移(yi)。也(ye)可用(yong)于(yu)降噪減振(zhen)。在現代(dai)工(gong)業(ye)中用(yong)途廣泛(fan)。供熱(re)上,為了防止供熱(re)管(guan)(guan)(guan)道(dao)升溫時(shi),由(you)(you)于(yu)熱(re)伸(shen)長(chang)或溫度應力(li)(li)而引(yin)起管(guan)(guan)(guan)道(dao)變形(xing)或破壞,需要在管(guan)(guan)(guan)道(dao)上設(she)置補償(chang)(chang)器(qi)(qi),以補償(chang)(chang)管(guan)(guan)(guan)道(dao)的熱(re)伸(shen)長(chang),從而減小管(guan)(guan)(guan)壁(bi)的應力(li)(li)和作(zuo)(zuo)(zuo)用(yong)在閥件(jian)或支(zhi)架(jia)結構上的作(zuo)(zuo)(zuo)用(yong)力(li)(li)。