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補償(chang)器(qi)習慣上也叫膨脹節(jie),或(huo)(huo)伸縮(suo)節(jie)。由(you)(you)構成(cheng)其工(gong)作(zuo)主體的(de)波紋管(guan)(guan)(guan)(guan)(guan)(一(yi)種(zhong)彈(dan)性元(yuan)件)和端管(guan)(guan)(guan)(guan)(guan)、支架、法蘭(lan)、導管(guan)(guan)(guan)(guan)(guan)等(deng)附件組成(cheng)。 屬于一(yi)種(zhong)補償(chang)元(yuan)件。利用(yong)其工(gong)作(zuo)主體波紋管(guan)(guan)(guan)(guan)(guan)的(de)有(you)效伸縮(suo)變形,以(yi)吸收(shou)管(guan)(guan)(guan)(guan)(guan)線(xian)、導管(guan)(guan)(guan)(guan)(guan)、容器(qi)等(deng)由(you)(you)熱(re)脹冷縮(suo)等(deng)原因而(er)產生的(de)尺寸(cun)變化,或(huo)(huo)補償(chang)管(guan)(guan)(guan)(guan)(guan)線(xian)、導管(guan)(guan)(guan)(guan)(guan)、容器(qi)等(deng)的(de)軸向、橫向和角(jiao)向位移。也可用(yong)于降噪減振。在(zai)現代工(gong)業中用(yong)途廣(guang)泛。供熱(re)上,為了防止供熱(re)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)升溫時,由(you)(you)于熱(re)伸長或(huo)(huo)溫度(du)應力(li)而(er)引起管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)變形或(huo)(huo)破壞,需要在(zai)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)上設置補償(chang)器(qi),以(yi)補償(chang)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)的(de)熱(re)伸長,從而(er)減小管(guan)(guan)(guan)(guan)(guan)壁的(de)應力(li)和作(zuo)用(yong)在(zai)閥件或(huo)(huo)支架結構上的(de)作(zuo)用(yong)力(li)。