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膨(peng)脹節(jie)習慣(guan)上(shang)(shang)(shang)也叫補(bu)償(chang)器,或(huo)伸(shen)(shen)縮節(jie)。由構(gou)成(cheng)其工(gong)作主體的(de)波紋管(guan)(guan)(guan)(guan)(一(yi)種彈性元件(jian))和(he)端管(guan)(guan)(guan)(guan)、支架、法(fa)蘭、導管(guan)(guan)(guan)(guan)等附件(jian)組成(cheng)。 膨(peng)脹節(jie)是為(wei)(wei)了補(bu)償(chang)因(yin)溫(wen)度差與機械振動引起的(de)附加應力,而(er)設置(zhi)在(zai)容器殼體或(huo)管(guan)(guan)(guan)(guan)道(dao)(dao)上(shang)(shang)(shang)的(de)一(yi)種撓性結(jie)構(gou)。利用其工(gong)作主體波紋管(guan)(guan)(guan)(guan)的(de)有效伸(shen)(shen)縮變形(xing),以吸(xi)收(shou)管(guan)(guan)(guan)(guan)線(xian)、導管(guan)(guan)(guan)(guan)、容器等由熱脹冷縮等原因(yin)而(er)產生(sheng)的(de)尺寸變化,或(huo)補(bu)償(chang)管(guan)(guan)(guan)(guan)線(xian)、導管(guan)(guan)(guan)(guan)、容器等的(de)軸(zhou)向、橫向和(he)角向位移。也可用于降噪(zao)減(jian)振。供(gong)熱上(shang)(shang)(shang),為(wei)(wei)了防(fang)止供(gong)熱管(guan)(guan)(guan)(guan)道(dao)(dao)升溫(wen)時,由于熱伸(shen)(shen)長或(huo)溫(wen)度應力而(er)引起管(guan)(guan)(guan)(guan)道(dao)(dao)變形(xing)或(huo)破壞,需(xu)要在(zai)管(guan)(guan)(guan)(guan)道(dao)(dao)上(shang)(shang)(shang)設置(zhi)補(bu)償(chang)器,以補(bu)償(chang)管(guan)(guan)(guan)(guan)道(dao)(dao)的(de)熱伸(shen)(shen)長,從而(er)減(jian)小管(guan)(guan)(guan)(guan)壁的(de)應力和(he)作用在(zai)閥件(jian)或(huo)支架結(jie)構(gou)上(shang)(shang)(shang)的(de)作用力。