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)調壓(ya)范(fan)(fan)(fan)圍:它(ta)是指(zhi)減壓(ya)閥輸出壓(ya)力P2的(de)可調范(fan)(fan)(fan)圍,在此范(fan)(fan)(fan)圍內要(yao)求達到規定的(de)精(jing)度。調壓(ya)范(fan)(fan)(fan)圍主(zhu)要(yao)與調壓(ya)彈簧的(de)剛度有關。 (2)壓(ya)力特性:它是指流(liu)量g為(wei)定值時,因輸入壓(ya)力波(bo)動而引起輸出(chu)壓(ya)力波(bo)動的特性。輸出(chu)壓(ya)力波(bo)動越(yue)小,減(jian)壓(ya)閥的特性越(yue)好。輸出(chu)壓(ya)力必須低(di)于(yu)輸入壓(ya)力—定值才基本上不(bu)隨輸入壓(ya)力變(bian)化(hua)而變(bian)化(hua)。 (3)流(liu)量(liang)(liang)(liang)特(te)性:它(ta)是指輸(shu)入壓力—定時,輸(shu)出(chu)(chu)壓力隨(sui)輸(shu)出(chu)(chu)流(liu)量(liang)(liang)(liang)g的變(bian)(bian)化而變(bian)(bian)化的持性。當流(liu)量(liang)(liang)(liang)g發生變(bian)(bian)化時,輸(shu)出(chu)(chu)壓力的變(bian)(bian)化越(yue)小(xiao)越(yue)好。一(yi)般輸(shu)出(chu)(chu)壓力越(yue)低,它(ta)隨(sui)輸(shu)出(chu)(chu)流(liu)量(liang)(liang)(liang)的變(bian)(bian)化波動(dong)就(jiu)越(yue)小(xiao)。 它(ta)可將閥(fa)前管(guan)路較(jiao)高(gao)的(de)液體壓力減(jian)(jian)(jian)少至閥(fa)后管(guan)路所(suo)需(xu)的(de)水(shui)(shui)(shui)(shui)(shui)平。這里的(de)傳輸介質主要(yao)是(shi)水(shui)(shui)(shui)(shui)(shui)。減(jian)(jian)(jian)壓閥(fa)廣泛(fan)用于(yu)高(gao)層建筑、城市給水(shui)(shui)(shui)(shui)(shui)管(guan)網水(shui)(shui)(shui)(shui)(shui)壓過高(gao)的(de)區(qu)域、礦井及(ji)其他場合,以(yi)保證給水(shui)(shui)(shui)(shui)(shui)系統(tong)(tong)中各用水(shui)(shui)(shui)(shui)(shui)點獲得適當的(de)服務水(shui)(shui)(shui)(shui)(shui)壓和(he)流量。鑒于(yu)水(shui)(shui)(shui)(shui)(shui)的(de)漏(lou)失率和(he)浪費程度(du)幾乎(hu)同給水(shui)(shui)(shui)(shui)(shui)系統(tong)(tong)的(de)水(shui)(shui)(shui)(shui)(shui)壓大(da)小成正比,因此(ci)減(jian)(jian)(jian)壓閥(fa)具有改善系統(tong)(tong)運行工況(kuang)和(he)潛在(zai)節水(shui)(shui)(shui)(shui)(shui)作(zuo)用,據統(tong)(tong)計其節水(shui)(shui)(shui)(shui)(shui)效果約為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 |