補償(chang)(chang)器(qi)(qi)習慣(guan)上(shang)(shang)(shang)也叫膨脹節(jie),或伸縮(suo)節(jie)。由構成其(qi)工(gong)作主(zhu)體(ti)的(de)(de)波(bo)紋管(guan)(一種(zhong)彈性(xing)元(yuan)件(jian))和端(duan)管(guan)、支架、法蘭、導(dao)管(guan)等(deng)(deng)附件(jian)組成。 屬于(yu)一種(zhong)補償(chang)(chang)元(yuan)件(jian)。利(li)用(yong)其(qi)工(gong)作主(zhu)體(ti)波(bo)紋管(guan)的(de)(de)有(you)效伸縮(suo)變形,以吸收管(guan)線(xian)(xian)、導(dao)管(guan)、容器(qi)(qi)等(deng)(deng)由熱(re)脹冷縮(suo)等(deng)(deng)原因而產生(sheng)的(de)(de)尺(chi)寸(cun)變化,或補償(chang)(chang)管(guan)線(xian)(xian)、導(dao)管(guan)、容器(qi)(qi)等(deng)(deng)的(de)(de)軸向、橫向和角向位移。也可用(yong)于(yu)降噪減振。在(zai)現(xian)代工(gong)業中用(yong)途廣泛。供(gong)(gong)熱(re)上(shang)(shang)(shang),為了防止供(gong)(gong)熱(re)管(guan)道(dao)升溫(wen)時,由于(yu)熱(re)伸長(chang)或溫(wen)度應力而引起管(guan)道(dao)變形或破壞(huai),需要在(zai)管(guan)道(dao)上(shang)(shang)(shang)設(she)置補償(chang)(chang)器(qi)(qi),以補償(chang)(chang)管(guan)道(dao)的(de)(de)熱(re)伸長(chang),從(cong)而減小管(guan)壁的(de)(de)應力和作用(yong)在(zai)閥件(jian)或支架結構上(shang)(shang)(shang)的(de)(de)作用(yong)力。