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補(bu)償(chang)器(qi)(qi)習慣(guan)上(shang)也叫(jiao)膨脹節,或(huo)(huo)(huo)伸縮(suo)節。由(you)構(gou)成其工(gong)(gong)作主體(ti)的(de)波紋管(guan)(一種彈性元件(jian)(jian))和端管(guan)、支架、法蘭、導(dao)管(guan)等(deng)附件(jian)(jian)組(zu)成。 屬(shu)于一種補(bu)償(chang)元件(jian)(jian)。利用(yong)(yong)(yong)其工(gong)(gong)作主體(ti)波紋管(guan)的(de)有(you)效伸縮(suo)變形,以吸收管(guan)線、導(dao)管(guan)、容器(qi)(qi)等(deng)由(you)熱(re)脹冷(leng)縮(suo)等(deng)原因而(er)(er)產生的(de)尺寸(cun)變化(hua),或(huo)(huo)(huo)補(bu)償(chang)管(guan)線、導(dao)管(guan)、容器(qi)(qi)等(deng)的(de)軸向(xiang)、橫向(xiang)和角向(xiang)位移。也可用(yong)(yong)(yong)于降噪減振。在(zai)(zai)(zai)現代工(gong)(gong)業(ye)中用(yong)(yong)(yong)途(tu)廣(guang)泛。供熱(re)上(shang),為了(le)防止供熱(re)管(guan)道升溫時(shi),由(you)于熱(re)伸長或(huo)(huo)(huo)溫度應(ying)力(li)(li)而(er)(er)引起管(guan)道變形或(huo)(huo)(huo)破壞,需要在(zai)(zai)(zai)管(guan)道上(shang)設置補(bu)償(chang)器(qi)(qi),以補(bu)償(chang)管(guan)道的(de)熱(re)伸長,從而(er)(er)減小管(guan)壁的(de)應(ying)力(li)(li)和作用(yong)(yong)(yong)在(zai)(zai)(zai)閥(fa)件(jian)(jian)或(huo)(huo)(huo)支架結(jie)構(gou)上(shang)的(de)作用(yong)(yong)(yong)力(li)(li)。