一、緩沖罐的作用

緩沖罐主要(yao)用于(yu)各(ge)種系(xi)(xi)統(tong)中(zhong)緩(huan)(huan)(huan)沖系(xi)(xi)統(tong)的(de)(de)(de)壓(ya)(ya)(ya)(ya)力波動，使(shi)系(xi)(xi)統(tong)工作更平(ping)穩。緩(huan)(huan)(huan)沖罐的(de)(de)(de)緩(huan)(huan)(huan)沖性能主要(yao)通過壓(ya)(ya)(ya)(ya)縮(suo)罐內的(de)(de)(de)壓(ya)(ya)(ya)(ya)縮(suo)空氣(qi)來實(shi)現。緩(huan)(huan)(huan)沖罐有(you)隔(ge)膜式緩(huan)(huan)(huan)沖罐和氣(qi)囊(nang)式兩種，被廣泛應用于(yu)中(zhong)央空調(diao)、鍋爐(lu)、熱水(shui)(shui)器(qi)、變(bian)頻(pin)、恒壓(ya)(ya)(ya)(ya)供水(shui)(shui)設備中(zhong)，其緩(huan)(huan)(huan)沖系(xi)(xi)統(tong)壓(ya)(ya)(ya)(ya)力波動，消除水(shui)(shui)錘起到穩壓(ya)(ya)(ya)(ya)卸荷的(de)(de)(de)作用，在系(xi)(xi)統(tong)內水(shui)(shui)壓(ya)(ya)(ya)(ya)輕微(wei)變(bian)化(hua)時，緩(huan)(huan)(huan)沖罐氣(qi)囊(nang)的(de)(de)(de)自(zi)動膨(peng)脹收縮(suo)會對水(shui)(shui)壓(ya)(ya)(ya)(ya)的(de)(de)(de)變(bian)化(hua)有(you)一定緩(huan)(huan)(huan)沖作用，能保證系(xi)(xi)統(tong)的(de)(de)(de)水(shui)(shui)壓(ya)(ya)(ya)(ya)穩定，水(shui)(shui)泵不會因(yin)壓(ya)(ya)(ya)(ya)力的(de)(de)(de)改變(bian)而頻(pin)繁的(de)(de)(de)開(kai)啟。

二、緩沖罐的結構和工作原理

緩沖罐是利用液體(ti)的壓縮(suo)性極小的性質(zhi)，用外力(li)(li)將(jiang)液體(ti)儲(chu)存在罐內，氣體(ti)受到壓縮(suo)壓力(li)(li)升高，當外力(li)(li)消失壓縮(suo)氣體(ti)膨(peng)脹可將(jiang)水排除。

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，這樣一是會壓縮罐體于(yu)氣(qi)囊(nang)之間(jian)的(de)氣(qi)，使其體積減小(xiao)，壓力增大；罐體于(yu)氣(qi)囊(nang)之間(jian)是出(chu)廠時(shi)預(yu)充的(de)氣(qi)，罐體外(wai)面為烤(kao)漆(qi)層，進出(chu)水口(kou)直(zhi)接用三通或金(jin)屬軟(ruan)管連接到系統(tong)，排氣(qi)閥接口(kou)可(ke)及時(shi)排出(chu)系統(tong)和氣(qi)囊(nang)內的(de)水溢出(chu)的(de)空(kong)氣(qi)，也可(ke)用閘閥直(zhi)接關死，以免水從(cong)頂部(bu)溢出(chu)，防塵帽(mao)下(xia)面是充/放(fang)氣(qi)口(kou)，可(ke)補充氣(qi)或放(fang)掉一部(bu)分氣(qi)體。二(er)是(shi)會增加系(xi)(xi)統(tong)(tong)整個水(shui)的(de)(de)容納空間(jian)(jian)，使系(xi)(xi)統(tong)(tong)壓(ya)(ya)(ya)力減(jian)小，直(zhi)到系(xi)(xi)統(tong)(tong)水(shui)的(de)(de)壓(ya)(ya)(ya)力和罐(guan)(guan)(guan)(guan)體(ti)(ti)于氣(qi)(qi)囊之間(jian)(jian)的(de)(de)氣(qi)(qi)壓(ya)(ya)(ya)力達到新的(de)(de)平衡才停(ting)止進水(shui)。當系(xi)(xi)統(tong)(tong)水(shui)壓(ya)(ya)(ya)力小于膨脹罐(guan)(guan)(guan)(guan)內(nei)氣(qi)(qi)體(ti)(ti)壓(ya)(ya)(ya)力時(shi)，氣(qi)(qi)囊內(nei)的(de)(de)水(shui)會在罐(guan)(guan)(guan)(guan)體(ti)(ti)于氣(qi)(qi)囊之間(jian)(jian)的(de)(de)氮氣(qi)(qi)的(de)(de)壓(ya)(ya)(ya)力作用(yong)下擠出，補回(hui)到系(xi)(xi)統(tong)(tong)，系(xi)(xi)統(tong)(tong)水(shui)容積減(jian)小壓(ya)(ya)(ya)力上升(sheng)，罐(guan)(guan)(guan)(guan)體(ti)(ti)于氣(qi)(qi)囊之間(jian)(jian)的(de)(de)氣(qi)(qi)體(ti)(ti)積增大壓(ya)(ya)(ya)力下降，直(zhi)到兩者達到新的(de)(de)平衡，水(shui)停(ting)止從氣(qi)(qi)囊擠壓(ya)(ya)(ya)回(hui)系(xi)(xi)統(tong)(tong)，緩(huan)沖罐(guan)(guan)(guan)(guan)起到調節(jie)系(xi)(xi)統(tong)(tong)壓(ya)(ya)(ya)力波動的(de)(de)作用(yong)。