一、緩沖罐的作用

緩沖罐主要(yao)用(yong)于(yu)各種系(xi)(xi)統中緩(huan)(huan)沖系(xi)(xi)統的(de)(de)(de)壓(ya)(ya)(ya)力波動，使(shi)系(xi)(xi)統工(gong)作更平穩(wen)。緩(huan)(huan)沖罐(guan)的(de)(de)(de)緩(huan)(huan)沖性(xing)能主要(yao)通(tong)過(guo)壓(ya)(ya)(ya)縮(suo)(suo)罐(guan)內的(de)(de)(de)壓(ya)(ya)(ya)縮(suo)(suo)空氣來實現。緩(huan)(huan)沖罐(guan)有隔膜式(shi)(shi)緩(huan)(huan)沖罐(guan)和氣囊式(shi)(shi)兩種，被廣泛應用(yong)于(yu)中央空調(diao)、鍋爐、熱水器(qi)、變(bian)(bian)頻(pin)、恒壓(ya)(ya)(ya)供水設(she)備中，其緩(huan)(huan)沖系(xi)(xi)統壓(ya)(ya)(ya)力波動，消除(chu)水錘(chui)起到穩(wen)壓(ya)(ya)(ya)卸(xie)荷(he)的(de)(de)(de)作用(yong)，在系(xi)(xi)統內水壓(ya)(ya)(ya)輕微(wei)變(bian)(bian)化時，緩(huan)(huan)沖罐(guan)氣囊的(de)(de)(de)自動膨(peng)脹收縮(suo)(suo)會對(dui)水壓(ya)(ya)(ya)的(de)(de)(de)變(bian)(bian)化有一(yi)定緩(huan)(huan)沖作用(yong)，能保(bao)證系(xi)(xi)統的(de)(de)(de)水壓(ya)(ya)(ya)穩(wen)定，水泵不會因壓(ya)(ya)(ya)力的(de)(de)(de)改(gai)變(bian)(bian)而頻(pin)繁的(de)(de)(de)開啟。

二、緩沖罐的結構和工作原理

緩沖罐是利用液(ye)體(ti)的壓(ya)縮性極小(xiao)的性質，用外(wai)力(li)將液(ye)體(ti)儲存在罐內，氣體(ti)受到壓(ya)縮壓(ya)力(li)升高，當外(wai)力(li)消失壓(ya)縮氣體(ti)膨脹可將水排(pai)除。

緩沖罐主要由氣門蓋、充氣口、氣囊、碳鋼罐體、法蘭盤組成，當其連接到水系統上時，主要起一個蓄能器的作用，當系統水壓力大于緩沖罐碳鋼罐體于氣囊之間的氣壓力時，系統水會在系統壓力的作用下擠入緩沖罐氣囊內，這樣一(yi)是(shi)會壓縮罐體于氣(qi)囊(nang)之間(jian)的(de)(de)氣(qi)，使其體積減小(xiao)，壓力(li)增大；罐體于氣(qi)囊(nang)之間(jian)是(shi)出(chu)廠時(shi)預充的(de)(de)氣(qi)，罐體外面(mian)為烤漆層，進出(chu)水(shui)口(kou)直接(jie)用(yong)三(san)通或(huo)金屬軟管連(lian)接(jie)到(dao)系(xi)統，排氣(qi)閥接(jie)口(kou)可(ke)及時(shi)排出(chu)系(xi)統和氣(qi)囊(nang)內的(de)(de)水(shui)溢出(chu)的(de)(de)空氣(qi)，也可(ke)用(yong)閘閥直接(jie)關死，以免水(shui)從頂(ding)部溢出(chu)，防塵帽下面(mian)是(shi)充/放氣(qi)口(kou)，可(ke)補充氣(qi)或(huo)放掉一(yi)部分氣(qi)體。二是(shi)會(hui)增(zeng)加系統(tong)(tong)(tong)(tong)整個(ge)水(shui)(shui)的(de)(de)(de)(de)(de)容納空間(jian)(jian)，使(shi)系統(tong)(tong)(tong)(tong)壓(ya)力(li)減小(xiao)(xiao)，直(zhi)(zhi)到(dao)系統(tong)(tong)(tong)(tong)水(shui)(shui)的(de)(de)(de)(de)(de)壓(ya)力(li)和罐體(ti)(ti)于(yu)氣(qi)(qi)(qi)(qi)囊(nang)(nang)(nang)之(zhi)(zhi)間(jian)(jian)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)壓(ya)力(li)達到(dao)新的(de)(de)(de)(de)(de)平衡才停止進(jin)水(shui)(shui)。當(dang)系統(tong)(tong)(tong)(tong)水(shui)(shui)壓(ya)力(li)小(xiao)(xiao)于(yu)膨脹罐內(nei)氣(qi)(qi)(qi)(qi)體(ti)(ti)壓(ya)力(li)時，氣(qi)(qi)(qi)(qi)囊(nang)(nang)(nang)內(nei)的(de)(de)(de)(de)(de)水(shui)(shui)會(hui)在罐體(ti)(ti)于(yu)氣(qi)(qi)(qi)(qi)囊(nang)(nang)(nang)之(zhi)(zhi)間(jian)(jian)的(de)(de)(de)(de)(de)氮(dan)氣(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)壓(ya)力(li)作(zuo)用(yong)下(xia)(xia)擠(ji)出(chu)，補回到(dao)系統(tong)(tong)(tong)(tong)，系統(tong)(tong)(tong)(tong)水(shui)(shui)容積減小(xiao)(xiao)壓(ya)力(li)上升，罐體(ti)(ti)于(yu)氣(qi)(qi)(qi)(qi)囊(nang)(nang)(nang)之(zhi)(zhi)間(jian)(jian)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)(qi)體(ti)(ti)積增(zeng)大壓(ya)力(li)下(xia)(xia)降，直(zhi)(zhi)到(dao)兩者達到(dao)新的(de)(de)(de)(de)(de)平衡，水(shui)(shui)停止從氣(qi)(qi)(qi)(qi)囊(nang)(nang)(nang)擠(ji)壓(ya)回系統(tong)(tong)(tong)(tong)，緩沖罐起到(dao)調節系統(tong)(tong)(tong)(tong)壓(ya)力(li)波動(dong)的(de)(de)(de)(de)(de)作(zuo)用(yong)。