①. 單式鉸鏈(lian)型膨脹節,由(you)一個波紋(wen)管及(ji)銷軸和(he)鉸鏈(lian)板組成,用于(yu)吸收單平(ping)面角位移[圖9-12(a)]。
②. 單式萬向鉸(jiao)鏈型膨(peng)脹節,由一個波(bo)紋管及萬向環、銷軸(zhou)和鉸(jiao)鏈板組成(cheng),能吸收(shou)多平面角位移[圖9-12(b)]。
③. 復式拉桿(gan)(gan)型膨脹(zhang)節,由用(yong)中間(jian)管(guan)連(lian)接的(de)兩個波紋管(guan)及拉桿(gan)(gan)組成(cheng),能吸收(shou)多(duo)平面(mian)橫向(xiang)(xiang)位移和拉桿(gan)(gan)間(jian)膨脹(zhang)節本身(shen)的(de)軸向(xiang)(xiang)位移。
④. 復式(shi)鉸(jiao)鏈(lian)(lian)型膨(peng)(peng)脹(zhang)節(jie),由用中(zhong)間管連接的兩個波紋(wen)管及銷軸(zhou)和(he)鉸(jiao)鏈(lian)(lian)板組成,能吸收單平面橫(heng)向(xiang)位移和(he)膨(peng)(peng)脹(zhang)節(jie)本(ben)身的軸(zhou)向(xiang)位移。
⑤. 復式萬向鉸(jiao)鏈(lian)型膨脹(zhang)節(jie)(jie),由用中(zhong)間(jian)管連接的(de)兩個波紋管及銷(xiao)軸和(he)鉸(jiao)鏈(lian)板(ban)組成,能吸收互相垂(chui)直的(de)兩個平面橫向位移(yi)和(he)膨脹(zhang)節(jie)(jie)本身的(de)
⑥. 彎管(guan)(guan)(guan)壓力(li)平(ping)衡型膨脹節(jie),由一(yi)(yi)個(ge)(ge)工(gong)作(zuo)波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)或用中間(jian)(jian)連接的兩個(ge)(ge)工(gong)作(zuo)波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)及一(yi)(yi)個(ge)(ge)平(ping)衡波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)構成,工(gong)作(zuo)波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)與平(ping)衡波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)間(jian)(jian)裝有(you)彎頭(tou)或三通,平(ping)衡波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)一(yi)(yi)端有(you)封頭(tou)并(bing)承受(shou)管(guan)(guan)(guan)道(dao)內壓,工(gong)作(zuo)波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)和平(ping)衡波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)外(wai)端間(jian)(jian)裝有(you)拉桿。此種膨脹節(jie)能吸收軸向(xiang)位(wei)移和/或橫向(xiang)位(wei)移。拉桿能約束波(bo)(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)壓力(li)、推力(li)。常用于管(guan)(guan)(guan)道(dao)方向(xiang)改變處。
⑦. 直管(guan)壓力平(ping)衡型膨(peng)(peng)脹(zhang)節,一(yi)般由位(wei)于(yu)兩端(duan)的兩個(ge)工作波紋(wen)管(guan)及有效面積等于(yu)兩倍工作波紋(wen)管(guan)有效面積、位(wei)于(yu)中間的一(yi)個(ge)平(ping)衡波紋(wen)管(guan)組成,兩套拉(la)(la)桿(gan)分別將每一(yi)個(ge)工作波紋(wen)管(guan)與平(ping)衡波紋(wen)管(guan)相互(hu)連接起來。此種膨(peng)(peng)脹(zhang)節能吸收軸向位(wei)移。拉(la)(la)桿(gan)能約束波紋(wen)管(guan)壓力、推力。
⑧. 帶(dai)約束的(de)金屬(shu)波紋(wen)管膨脹節的(de)共同特點是管道的(de)內壓推(tui)力(俗(su)稱(cheng)盲板力)沒有作用于(yu)固定點或限(xian)位點處(chu),而是由約束波紋(wen)管膨脹節用的(de)金屬(shu)部件承(cheng)受。