ATOS減壓閥是通過調節,將進口壓力減至某需要的出口壓力,并依靠介質本身的能量,使出口壓力自動保持穩定的閥門。從流體力學的觀點看,減壓閥是個局部阻力可以變化的節流元件,即通過改變節流面積,使流速及流體的動能改變,造成不同的壓力損失,從而達到減壓的目的。然后依靠控制與調節系統的調節,使閥后壓力的波動與彈簧力相平衡,使閥后壓力在定的誤差范圍內保持恒定。 ATOS減壓閥的性能類別: (1)調(diao)壓(ya)(ya)范(fan)圍(wei):它是(shi)指減壓(ya)(ya)閥輸出壓(ya)(ya)力P2的可調(diao)范(fan)圍(wei),在此(ci)范(fan)圍(wei)內要求達到規(gui)定的精度。調(diao)壓(ya)(ya)范(fan)圍(wei)主要與調(diao)壓(ya)(ya)彈(dan)簧的剛度有(you)關。 (2)壓(ya)力(li)(li)特性:它是指流量g為定值時(shi),因輸入(ru)壓(ya)力(li)(li)波動而引起(qi)輸出壓(ya)力(li)(li)波動的特性。輸出壓(ya)力(li)(li)波動越小(xiao),減壓(ya)閥的特性越好。輸出壓(ya)力(li)(li)必(bi)須(xu)低于輸入(ru)壓(ya)力(li)(li)—定值才基本上不隨輸入(ru)壓(ya)力(li)(li)變(bian)化(hua)而變(bian)化(hua)。 (3)流量特性:它是指(zhi)輸(shu)(shu)入壓力(li)—定時(shi),輸(shu)(shu)出(chu)壓力(li)隨輸(shu)(shu)出(chu)流量g的(de)變(bian)(bian)化(hua)而變(bian)(bian)化(hua)的(de)持性。當(dang)流量g發生變(bian)(bian)化(hua)時(shi),輸(shu)(shu)出(chu)壓力(li)的(de)變(bian)(bian)化(hua)越(yue)小越(yue)好。一般(ban)輸(shu)(shu)出(chu)壓力(li)越(yue)低,它隨輸(shu)(shu)出(chu)流量的(de)變(bian)(bian)化(hua)波(bo)動就越(yue)小。 它可將(jiang)閥(fa)前管(guan)路較高(gao)的(de)液(ye)體壓(ya)力(li)減少至閥(fa)后(hou)管(guan)路所(suo)需的(de)水(shui)(shui)(shui)平(ping)。這里的(de)傳輸介質主(zhu)要是水(shui)(shui)(shui)。減壓(ya)閥(fa)廣泛用(yong)于高(gao)層建筑、城(cheng)市給(gei)水(shui)(shui)(shui)管(guan)網水(shui)(shui)(shui)壓(ya)過高(gao)的(de)區(qu)域(yu)、礦井(jing)及(ji)其他場合,以保證給(gei)水(shui)(shui)(shui)系(xi)統(tong)(tong)(tong)中各(ge)用(yong)水(shui)(shui)(shui)點獲(huo)得(de)適當的(de)服務(wu)水(shui)(shui)(shui)壓(ya)和(he)流(liu)量(liang)。鑒于水(shui)(shui)(shui)的(de)漏失(shi)率(lv)和(he)浪費程(cheng)度幾乎(hu)同給(gei)水(shui)(shui)(shui)系(xi)統(tong)(tong)(tong)的(de)水(shui)(shui)(shui)壓(ya)大小成正比(bi),因此減壓(ya)閥(fa)具有改(gai)善系(xi)統(tong)(tong)(tong)運行工況和(he)潛在節水(shui)(shui)(shui)作(zuo)用(yong),據統(tong)(tong)(tong)計其節水(shui)(shui)(shui)效果約(yue)為(wei)30%。 意大利ATOS減壓閥型號: RZGA-A-010/210/M 20 RZGA-A-010/32/M/7 20 RZGA-A-033/80/M/7 31 RZGO-A-010/100 20 RZGO-A-010/210 20 RZGO-A-033/100 RZGO-A-033/210 RZGO-A-033/315 31 RZGO-AE-010/100 10 RZGO-AE-033/210 10 RZGO-TER-010/100 RZGO-TER-010/100/I 40 RZGO-TER-010/210 40 RZGO-TER-010/210/I 40 RZGO-TER-010/32 40 RZGO-TER-033/100 RZGO-TER-033/315 40 |