定(ding)壓(ya)(ya)(ya)(ya)(ya)(ya)罐(guan)工作原(yuan)(yuan)理：定(ding)壓(ya)(ya)(ya)(ya)(ya)(ya)罐(guan)定(ding)壓(ya)(ya)(ya)(ya)(ya)(ya)，是在膨脹水(shui)(shui)箱基(ji)礎上發展起來的(de)(de)(de)一類定(ding)壓(ya)(ya)(ya)(ya)(ya)(ya)補水(shui)(shui)裝(zhuang)(zhuang)置，其(qi)原(yuan)(yuan)理同(tong)閉式膨脹水(shui)(shui)箱。當系(xi)(xi)(xi)統(tong)(tong)水(shui)(shui)溫變化(hua)或(huo)泄(xie)漏引(yin)起水(shui)(shui)的(de)(de)(de)容積(ji)變化(hua)時(shi)，由(you)于氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)罐(guan)內(nei)氣(qi)體(ti)高壓(ya)(ya)(ya)(ya)(ya)(ya)縮性的(de)(de)(de)緩沖作用，使(shi)系(xi)(xi)(xi)統(tong)(tong)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)穩定(ding)在預(yu)設(she)的(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)范圍內(nei)。如果系(xi)(xi)(xi)統(tong)(tong)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)下(xia)降至預(yu)設(she)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)的(de)(de)(de)下(xia)限時(shi)，由(you)電接點繼電器動作啟動補水(shui)(shui)泵，使(shi)之(zhi)向(xiang)(xiang)系(xi)(xi)(xi)統(tong)(tong)供水(shui)(shui)，直(zhi)至壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)達到預(yu)定(ding)的(de)(de)(de)的(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)上限值(zhi)時(shi)止。若系(xi)(xi)(xi)統(tong)(tong)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)超過設(she)定(ding)的(de)(de)(de)最高壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)值(zhi)時(shi)，安全閥自(zi)行向(xiang)(xiang)軟水(shui)(shui)箱或(huo)排水(shui)(shui)系(xi)(xi)(xi)統(tong)(tong)泄(xie)水(shui)(shui)降壓(ya)(ya)(ya)(ya)(ya)(ya)。以維(wei)持系(xi)(xi)(xi)統(tong)(tong)的(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)平衡。該裝(zhuang)(zhuang)置由(you)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)罐(guan)、補水(shui)(shui)泵、安全閥、電接點壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)表、控制箱等組合而成(cheng)。
系(xi)(xi)統(tong)(tong)(tong)中定(ding)壓(ya)(ya)(ya)點(dian)(dian)壓(ya)(ya)(ya)力(li)(li)確定(ding)：定(ding)壓(ya)(ya)(ya)點(dian)(dian)壓(ya)(ya)(ya)力(li)(li)的(de)高(gao)(gao)低要考慮兩個因素，一(yi)個是系(xi)(xi)統(tong)(tong)(tong)運行時任一(yi)點(dian)(dian)都(dou)不(bu)(bu)超壓(ya)(ya)(ya)，二是系(xi)(xi)統(tong)(tong)(tong)停運時系(xi)(xi)統(tong)(tong)(tong)不(bu)(bu)倒(dao)空(kong)。如果定(ding)壓(ya)(ya)(ya)點(dian)(dian)的(de)壓(ya)(ya)(ya)力(li)(li)過高(gao)(gao)，系(xi)(xi)統(tong)(tong)(tong)中的(de)每一(yi)點(dian)(dian)的(de)壓(ya)(ya)(ya)力(li)(li)也(ye)就(jiu)相應的(de)增高(gao)(gao)，導致(zhi)管道、閥門或(huo)設備等在(zai)高(gao)(gao)壓(ya)(ya)(ya)下運行，出現(xian)強度破壞或(huo)疲勞損壞。壓(ya)(ya)(ya)力(li)(li)設置(zhi)太低，系(xi)(xi)統(tong)(tong)(tong)就(jiu)會倒(dao)空(kong)出現(xian)氣堵(du)，而導致(zhi)介質循環不(bu)(bu)暢(chang)。氣壓(ya)(ya)(ya)罐工作壓(ya)(ya)(ya)力(li)(li)值按(an)以下方(fang)法確定(ding)(推(tui)薦) (1)補(bu)水(shui)泵(beng)啟動壓(ya)(ya)(ya)力(li)(li)P1: P1=Po+0.005;“Po”系(xi)(xi)統(tong)(tong)(tong)最高(gao)(gao)點(dian)(dian)壓(ya)(ya)(ya)力(li)(li) (2)補(bu)水(shui)泵(beng)停泵(beng)壓(ya)(ya)(ya)力(li)(li)P2：
P2=(P1+0.1)/β-0.1β：工作壓力(li)比(bi)，一般取0.65～0.85 (3)安全閥開啟壓力(li)P3: P3=P2+0.03式中壓力(li)(壓強)計算單位均為(wei)“MPa” 氣壓罐總容積: V=Vt/(1-β) Vt-調(diao)節水(shui)(shui)量(liang)(m3),為(wei)補水(shui)(shui)泵3min的流量(liang),且保持水(shui)(shui)箱調(diao)節水(shui)(shui)位不小(xiao)于200mm。估算時取膨脹(zhang)水(shui)(shui)量(liang)的一半(ban)。
補(bu)水(shui)泵(beng)流量：補(bu)水(shui)泵(beng)流量(每小時)選擇應(ying)不小于系(xi)統(tong)水(shui)容量的(de)4%～5%。 特點(dian)(dian)：(1)優點(dian)(dian)：布置靈活，不受高(gao)(gao)(gao)度的(de)限(xian)制(zhi);實(shi)現設(she)備集中控制(zhi)管理，維修使用較(jiao)方(fang)便;系(xi)統(tong)的(de)氧化腐蝕(shi)減輕;較(jiao)好(hao)地防止(zhi)系(xi)統(tong)出現汽化及(ji)水(shui)擊現象;適應(ying)大面積高(gao)(gao)(gao)建筑物的(de)需要。(2)缺(que)點(dian)(dian)：補(bu)水(shui)泵(beng)啟動頻(pin)繁(fan),泵(beng)的(de)壽命低;系(xi)統(tong)壓力波動大，不能有(you)效(xiao)防止(zhi)非正常情況系(xi)統(tong)超壓的(de)問題;不能斷電能源浪(lang)費較(jiao)大，運行費用高(gao)(gao)(gao);體積較(jiao)大占空間大。
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銷售熱線：010-8022-5898
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