電動蝶閥的結構特征描述

      1.在(zai)高溫高壓(ya)工況下,仍(reng)具有(you)穩定的密(mi)(mi)封(feng)性(xing)能.它的特殊密(mi)(mi)封(feng)系統(tong)可保證從超低溫至超高溫各(ge)溫度范圍都具有(you)較(jiao)高的密(mi)(mi)封(feng)性(xing)能

　　2.三維偏(pian)心密(mi)(mi)封(feng)(feng)(feng)系統加之人優化(hua)的設(she)計,使閥門(men)開啟阻(zu)力小.蝶(die)板(ban)密(mi)(mi)封(feng)(feng)(feng)面(mian)為(wei)一向(xiang)上凸起的錐形,開啟時蝶(die)板(ban)圓周面(mian)上的各點同時完(wan)成(cheng)(cheng)脫離密(mi)(mi)封(feng)(feng)(feng)圈,固體物(wu)不易在密(mi)(mi)封(feng)(feng)(feng)面(mian)上堆積.閥門(men)關閉(bi)過程通過密(mi)(mi)封(feng)(feng)(feng)圈的彈性受(shou)壓來完(wan)成(cheng)(cheng),

　　3.蝶板與密封(feng)圈之間不存在(zai)相卡現象.

　　4.閥門的(de)密封性能不受溫(wen)度變化的(de)影響.

　　5.閥桿(gan)軸(zhou)徑(jing)密封采(cai)用石墨壓制成(cheng)形密封圈.綜上(shang)(shang)所述(shu)確保了零(ling)(ling)泄(xie)漏,金屬(shu)密封加上(shang)(shang)在火災前,中(zhong),后均(jun)為零(ling)(ling)泄(xie)漏,故是本質(zhi)火災安全型.