一、緩沖罐的作用
緩沖罐主(zhu)要(yao)用于各種(zhong)系(xi)統(tong)中緩(huan)(huan)(huan)沖(chong)系(xi)統(tong)的(de)(de)(de)壓力(li)(li)波(bo)動(dong),使(shi)系(xi)統(tong)工作(zuo)更平穩。緩(huan)(huan)(huan)沖(chong)罐(guan)的(de)(de)(de)緩(huan)(huan)(huan)沖(chong)性能主(zhu)要(yao)通過(guo)壓縮罐(guan)內(nei)的(de)(de)(de)壓縮空氣(qi)來實現。緩(huan)(huan)(huan)沖(chong)罐(guan)有隔(ge)膜式緩(huan)(huan)(huan)沖(chong)罐(guan)和(he)氣(qi)囊式兩種(zhong),被廣泛應用于中央空調、鍋爐、熱水(shui)器、變(bian)(bian)頻、恒(heng)壓供水(shui)設備中,其緩(huan)(huan)(huan)沖(chong)系(xi)統(tong)壓力(li)(li)波(bo)動(dong),消(xiao)除水(shui)錘起到穩壓卸荷的(de)(de)(de)作(zuo)用,在系(xi)統(tong)內(nei)水(shui)壓輕微變(bian)(bian)化時(shi),緩(huan)(huan)(huan)沖(chong)罐(guan)氣(qi)囊的(de)(de)(de)自動(dong)膨脹收縮會(hui)對水(shui)壓的(de)(de)(de)變(bian)(bian)化有一定緩(huan)(huan)(huan)沖(chong)作(zuo)用,能保證系(xi)統(tong)的(de)(de)(de)水(shui)壓穩定,水(shui)泵不會(hui)因壓力(li)(li)的(de)(de)(de)改變(bian)(bian)而頻繁(fan)的(de)(de)(de)開啟。
二、緩沖罐的結構和工作原理
緩沖罐是利用(yong)液體(ti)的(de)(de)壓縮(suo)性極小(xiao)的(de)(de)性質,用(yong)外力(li)將液體(ti)儲存(cun)在罐內,氣(qi)體(ti)受到(dao)壓縮(suo)壓力(li)升高,當外力(li)消失壓縮(suo)氣(qi)體(ti)膨脹(zhang)可將水(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(yi)是會壓(ya)縮罐(guan)體(ti)于氣(qi)(qi)(qi)囊之(zhi)間的氣(qi)(qi)(qi),使其體(ti)積減小,壓(ya)力增大(da);罐(guan)體(ti)于氣(qi)(qi)(qi)囊之(zhi)間是出(chu)廠時(shi)預充的氣(qi)(qi)(qi),罐(guan)體(ti)外面(mian)為烤漆層,進出(chu)水(shui)口直(zhi)接用(yong)三通或(huo)(huo)金屬軟管連接到系(xi)統,排氣(qi)(qi)(qi)閥(fa)接口可(ke)及(ji)時(shi)排出(chu)系(xi)統和氣(qi)(qi)(qi)囊內的水(shui)溢出(chu)的空(kong)氣(qi)(qi)(qi),也可(ke)用(yong)閘(zha)閥(fa)直(zhi)接關死,以免水(shui)從(cong)頂部(bu)溢出(chu),防塵帽下面(mian)是充/放(fang)(fang)氣(qi)(qi)(qi)口,可(ke)補充氣(qi)(qi)(qi)或(huo)(huo)放(fang)(fang)掉一(yi)部(bu)分氣(qi)(qi)(qi)體(ti)。二是會增(zeng)加系(xi)(xi)統(tong)(tong)整個(ge)水(shui)的(de)(de)容(rong)納空(kong)間(jian)(jian),使系(xi)(xi)統(tong)(tong)壓(ya)(ya)力(li)(li)(li)減小,直到(dao)(dao)系(xi)(xi)統(tong)(tong)水(shui)的(de)(de)壓(ya)(ya)力(li)(li)(li)和罐(guan)體(ti)于氣(qi)(qi)囊之(zhi)間(jian)(jian)的(de)(de)氣(qi)(qi)壓(ya)(ya)力(li)(li)(li)達(da)到(dao)(dao)新的(de)(de)平衡(heng)才停(ting)止進水(shui)。當系(xi)(xi)統(tong)(tong)水(shui)壓(ya)(ya)力(li)(li)(li)小于膨脹罐(guan)內氣(qi)(qi)體(ti)壓(ya)(ya)力(li)(li)(li)時,氣(qi)(qi)囊內的(de)(de)水(shui)會在罐(guan)體(ti)于氣(qi)(qi)囊之(zhi)間(jian)(jian)的(de)(de)氮氣(qi)(qi)的(de)(de)壓(ya)(ya)力(li)(li)(li)作用下擠出,補回(hui)到(dao)(dao)系(xi)(xi)統(tong)(tong),系(xi)(xi)統(tong)(tong)水(shui)容(rong)積減小壓(ya)(ya)力(li)(li)(li)上升,罐(guan)體(ti)于氣(qi)(qi)囊之(zhi)間(jian)(jian)的(de)(de)氣(qi)(qi)體(ti)積增(zeng)大壓(ya)(ya)力(li)(li)(li)下降,直到(dao)(dao)兩者達(da)到(dao)(dao)新的(de)(de)平衡(heng),水(shui)停(ting)止從氣(qi)(qi)囊擠壓(ya)(ya)回(hui)系(xi)(xi)統(tong)(tong),緩(huan)沖罐(guan)起到(dao)(dao)調(diao)節(jie)系(xi)(xi)統(tong)(tong)壓(ya)(ya)力(li)(li)(li)波(bo)動的(de)(de)作用。