一、緩沖罐的作用

緩沖罐主要用(yong)于各種(zhong)系(xi)(xi)統中(zhong)緩(huan)(huan)(huan)(huan)沖(chong)(chong)(chong)(chong)系(xi)(xi)統的(de)(de)壓(ya)(ya)(ya)力波動，使系(xi)(xi)統工作更平穩。緩(huan)(huan)(huan)(huan)沖(chong)(chong)(chong)(chong)罐(guan)(guan)的(de)(de)緩(huan)(huan)(huan)(huan)沖(chong)(chong)(chong)(chong)性能(neng)主要通(tong)過壓(ya)(ya)(ya)縮罐(guan)(guan)內的(de)(de)壓(ya)(ya)(ya)縮空氣來實(shi)現。緩(huan)(huan)(huan)(huan)沖(chong)(chong)(chong)(chong)罐(guan)(guan)有隔膜式緩(huan)(huan)(huan)(huan)沖(chong)(chong)(chong)(chong)罐(guan)(guan)和(he)氣囊式兩種(zhong)，被廣泛(fan)應用(yong)于中(zhong)央空調、鍋爐、熱(re)水(shui)(shui)(shui)器(qi)、變(bian)頻、恒(heng)壓(ya)(ya)(ya)供水(shui)(shui)(shui)設備中(zhong)，其緩(huan)(huan)(huan)(huan)沖(chong)(chong)(chong)(chong)系(xi)(xi)統壓(ya)(ya)(ya)力波動，消(xiao)除水(shui)(shui)(shui)錘起到(dao)穩壓(ya)(ya)(ya)卸荷的(de)(de)作用(yong)，在系(xi)(xi)統內水(shui)(shui)(shui)壓(ya)(ya)(ya)輕微變(bian)化時，緩(huan)(huan)(huan)(huan)沖(chong)(chong)(chong)(chong)罐(guan)(guan)氣囊的(de)(de)自動膨脹收縮會對水(shui)(shui)(shui)壓(ya)(ya)(ya)的(de)(de)變(bian)化有一定緩(huan)(huan)(huan)(huan)沖(chong)(chong)(chong)(chong)作用(yong)，能(neng)保證系(xi)(xi)統的(de)(de)水(shui)(shui)(shui)壓(ya)(ya)(ya)穩定，水(shui)(shui)(shui)泵不(bu)會因壓(ya)(ya)(ya)力的(de)(de)改變(bian)而頻繁的(de)(de)開啟(qi)。

二、緩沖罐的結構和工作原理

緩沖罐(guan)(guan)是利(li)用液(ye)體(ti)的(de)壓(ya)縮(suo)性極小的(de)性質(zhi)，用外(wai)力將液(ye)體(ti)儲存在罐(guan)(guan)內(nei)，氣體(ti)受(shou)到壓(ya)縮(suo)壓(ya)力升(sheng)高，當(dang)外(wai)力消失(shi)壓(ya)縮(suo)氣體(ti)膨(peng)脹可(ke)將水(shui)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(shi)會壓縮(suo)罐體(ti)于(yu)氣(qi)囊之(zhi)間(jian)的(de)(de)氣(qi)，使(shi)其(qi)體(ti)積減小，壓力增大；罐體(ti)于(yu)氣(qi)囊之(zhi)間(jian)是(shi)出(chu)廠時(shi)預充(chong)的(de)(de)氣(qi)，罐體(ti)外面為(wei)烤漆(qi)層，進出(chu)水(shui)口(kou)直接(jie)用三通或金(jin)屬(shu)軟管連接(jie)到系(xi)統，排氣(qi)閥接(jie)口(kou)可及(ji)時(shi)排出(chu)系(xi)統和氣(qi)囊內的(de)(de)水(shui)溢出(chu)的(de)(de)空氣(qi)，也可用閘(zha)閥直接(jie)關死，以免(mian)水(shui)從頂部溢出(chu)，防塵帽下面是(shi)充(chong)/放(fang)氣(qi)口(kou)，可補充(chong)氣(qi)或放(fang)掉一部分氣(qi)體(ti)。二是會增加系統(tong)(tong)整(zheng)個水的(de)容(rong)納空間(jian)，使系統(tong)(tong)壓(ya)(ya)(ya)力(li)減小(xiao)，直到系統(tong)(tong)水的(de)壓(ya)(ya)(ya)力(li)和罐(guan)體于氣(qi)(qi)囊(nang)(nang)之間(jian)的(de)氣(qi)(qi)壓(ya)(ya)(ya)力(li)達到新的(de)平(ping)(ping)衡(heng)才停止進(jin)水。當系統(tong)(tong)水壓(ya)(ya)(ya)力(li)小(xiao)于膨脹(zhang)罐(guan)內氣(qi)(qi)體壓(ya)(ya)(ya)力(li)時，氣(qi)(qi)囊(nang)(nang)內的(de)水會在罐(guan)體于氣(qi)(qi)囊(nang)(nang)之間(jian)的(de)氮氣(qi)(qi)的(de)壓(ya)(ya)(ya)力(li)作用下(xia)擠(ji)出，補回到系統(tong)(tong)，系統(tong)(tong)水容(rong)積減小(xiao)壓(ya)(ya)(ya)力(li)上升，罐(guan)體于氣(qi)(qi)囊(nang)(nang)之間(jian)的(de)氣(qi)(qi)體積增大壓(ya)(ya)(ya)力(li)下(xia)降，直到兩者達到新的(de)平(ping)(ping)衡(heng)，水停止從氣(qi)(qi)囊(nang)(nang)擠(ji)壓(ya)(ya)(ya)回系統(tong)(tong)，緩沖罐(guan)起到調節系統(tong)(tong)壓(ya)(ya)(ya)力(li)波動的(de)作用。