油管頭有什麼作用呢

油you管guan頭tou是shi安an裝zhuang在zai套tao管guan頭tou上shang麵mian，其qi作zuo用yong是shi懸xuan掛gua井jing內nei油you管guan
，並bing密mi封feng油you管guan和he油you層ceng套tao管guan之zhi間jian的de環huan形xing空kong間jian。目mu前qian
，多duo采cai用yong頂ding絲si閥fa懸xuan掛gua法fa

，即ji在zai套tao管guan四si通tong上shang安an裝zhuang一yi個ge頂ding絲si閥fa，頂ding絲si閥fa內nei有you一yi個ge上shang大da下xia小xiao的de錐zhui形xing通tong道dao。油you管guan懸xuan掛gua器qi也ye是shi一yi個ge錐zhui形xing題ti，上shang帶dai密mi封feng圈quan，在zai全quan井jing筒tong油you管guan重zhong量liang的de拉la力li下xia，油you管guan懸xuan掛gua器qi牢lao牢lao的de坐zuo在zai頂ding絲si閥fa的de座zuo裏li。頂ding絲si的de作zuo用yong是shi防fang止zhi進jin內nei壓ya力li太tai高gao時shi間jian將jiang油you管guan柱zhu頂ding出chu。