一、緩沖罐的作用

緩沖罐主要用(yong)(yong)于(yu)各種系(xi)統(tong)中緩沖(chong)(chong)系(xi)統(tong)的(de)壓(ya)(ya)力(li)波(bo)動(dong)，使系(xi)統(tong)工作更(geng)平穩(wen)。緩沖(chong)(chong)罐的(de)緩沖(chong)(chong)性能主要通過(guo)壓(ya)(ya)縮罐內(nei)的(de)壓(ya)(ya)縮空氣(qi)(qi)來實現。緩沖(chong)(chong)罐有隔膜式緩沖(chong)(chong)罐和(he)氣(qi)(qi)囊(nang)式兩(liang)種，被廣(guang)泛應用(yong)(yong)于(yu)中央空調(diao)、鍋(guo)爐、熱水(shui)器、變(bian)頻、恒壓(ya)(ya)供水(shui)設備中，其緩沖(chong)(chong)系(xi)統(tong)壓(ya)(ya)力(li)波(bo)動(dong)，消除水(shui)錘起到穩(wen)壓(ya)(ya)卸(xie)荷(he)的(de)作用(yong)(yong)，在系(xi)統(tong)內(nei)水(shui)壓(ya)(ya)輕微(wei)變(bian)化時，緩沖(chong)(chong)罐氣(qi)(qi)囊(nang)的(de)自動(dong)膨脹(zhang)收(shou)縮會(hui)對水(shui)壓(ya)(ya)的(de)變(bian)化有一定(ding)緩沖(chong)(chong)作用(yong)(yong)，能保證系(xi)統(tong)的(de)水(shui)壓(ya)(ya)穩(wen)定(ding)，水(shui)泵不會(hui)因壓(ya)(ya)力(li)的(de)改變(bian)而頻繁(fan)的(de)開啟。

二、緩沖罐的結構和工作原理

緩沖罐(guan)是(shi)利用(yong)液體(ti)(ti)的(de)壓(ya)縮(suo)(suo)性極小的(de)性質(zhi)，用(yong)外(wai)力將(jiang)液體(ti)(ti)儲(chu)存在罐(guan)內，氣體(ti)(ti)受到壓(ya)縮(suo)(suo)壓(ya)力升高，當外(wai)力消失壓(ya)縮(suo)(suo)氣體(ti)(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(yi)是會(hui)壓縮罐體(ti)于氣囊之間的氣，使其體(ti)積減小，壓力(li)增大；罐體(ti)于氣囊之間是出廠時(shi)預(yu)充的氣，罐體(ti)外面(mian)為烤(kao)漆層(ceng)，進出水(shui)(shui)口直接用(yong)三通或金屬軟管連接到系統(tong)，排氣閥接口可及時(shi)排出系統(tong)和(he)氣囊內的水(shui)(shui)溢(yi)出的空(kong)氣，也可用(yong)閘閥直接關死(si)，以免(mian)水(shui)(shui)從(cong)頂部(bu)溢(yi)出，防(fang)塵帽下面(mian)是充/放氣口，可補(bu)充氣或放掉一(yi)部(bu)分氣體(ti)。二是會(hui)增加(jia)系(xi)統(tong)整個水的容納空間，使系(xi)統(tong)壓(ya)力(li)減(jian)小，直到(dao)(dao)(dao)系(xi)統(tong)水的壓(ya)力(li)和罐(guan)(guan)體于氣(qi)囊之(zhi)間的氣(qi)壓(ya)力(li)達(da)(da)到(dao)(dao)(dao)新的平衡才停止進水。當系(xi)統(tong)水壓(ya)力(li)小于膨脹罐(guan)(guan)內氣(qi)體壓(ya)力(li)時，氣(qi)囊內的水會(hui)在(zai)罐(guan)(guan)體于氣(qi)囊之(zhi)間的氮氣(qi)的壓(ya)力(li)作用(yong)(yong)下擠(ji)出，補回到(dao)(dao)(dao)系(xi)統(tong)，系(xi)統(tong)水容積減(jian)小壓(ya)力(li)上(shang)升，罐(guan)(guan)體于氣(qi)囊之(zhi)間的氣(qi)體積增大壓(ya)力(li)下降，直到(dao)(dao)(dao)兩者達(da)(da)到(dao)(dao)(dao)新的平衡，水停止從氣(qi)囊擠(ji)壓(ya)回系(xi)統(tong)，緩沖(chong)罐(guan)(guan)起到(dao)(dao)(dao)調節系(xi)統(tong)壓(ya)力(li)波動(dong)的作用(yong)(yong)。