SMC大流量型減壓閥/日本SMC空氣過濾器

性能(neng)參(can)數:

準標準a10.02～0.2MPa設定，聚碳酸酯杯

準標準bN帶排水活門，非溢流型，流向:左→右，產品標牌、杯注意指示和壓力表的單位表示:MPa

訂制規格-標準

主體大小20組合件大小

帶逆流功能-無逆流功能

螺紋種類NNPT

鑒(jian)于水的(de)漏失率(lv)和浪費程度幾乎同給(gei)水系(xi)統的(de)水壓大小成正比，因此(ci)減壓閥(fa)(fa)具(ju)有改善系(xi)統運(yun)行工況和潛(qian)在(zai)節(jie)(jie)水作用，據(ju)統計其節(jie)(jie)水效果(guo)約為30%。減壓閥(fa)(fa)的(de)構(gou)造類型很多，以往常見的(de)有薄膜式、內彈簧活塞式等(deng)。

內(nei)部(bu)先(xian)(xian)導(dao)式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥當(dang)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥的(de)(de)(de)輸出(chu)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)較高(gao)或(huo)(huo)通(tong)徑較大時(shi)，用調壓(ya)(ya)(ya)(ya)(ya)(ya)彈簧(huang)直(zhi)(zhi)(zhi)接調壓(ya)(ya)(ya)(ya)(ya)(ya)，則彈簧(huang)剛度(du)必然過大，流(liu)量變(bian)化(hua)時(shi)，輸出(chu)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)波動較大，閥的(de)(de)(de)結構尺寸也將增(zeng)大。為(wei)了(le)克服這些缺點，可采(cai)用先(xian)(xian)導(dao)式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥。先(xian)(xian)導(dao)式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥的(de)(de)(de)工作(zuo)原理與(yu)直(zhi)(zhi)(zhi)動式(shi)(shi)的(de)(de)(de)基本相(xiang)同。先(xian)(xian)導(dao)式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥所用的(de)(de)(de)調壓(ya)(ya)(ya)(ya)(ya)(ya)氣(qi)體，是由(you)小(xiao)型(xing)的(de)(de)(de)直(zhi)(zhi)(zhi)動式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥供給的(de)(de)(de)。若把小(xiao)型(xing)直(zhi)(zhi)(zhi)動式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥裝在閥體內(nei)部(bu)，則稱為(wei)內(nei)部(bu)先(xian)(xian)導(dao)式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥；若將小(xiao)型(xing)直(zhi)(zhi)(zhi)動式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥裝在主閥體外(wai)部(bu)，則稱為(wei)外(wai)部(bu)先(xian)(xian)導(dao)式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥。與(yu)直(zhi)(zhi)(zhi)動式(shi)(shi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)(ya)閥相(xiang)比，增(zeng)加(jia)了(le)由(you)噴嘴(zui)4、擋板(ban)(ban)3、固定節(jie)流(liu)孔9及(ji)氣(qi)室B所組成的(de)(de)(de)噴嘴(zui)擋板(ban)(ban)放大環節(jie)。當(dang)噴嘴(zui)與(yu)擋板(ban)(ban)之間的(de)(de)(de)距離發生(sheng)微小(xiao)變(bian)化(hua)時(shi)，就(jiu)會使(shi)B室中的(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)發生(sheng)根明顯的(de)(de)(de)變(bian)化(hua)，從而引(yin)起(qi)膜片10有較大的(de)(de)(de)位移，去控制(zhi)閥芯6的(de)(de)(de)上下移動，使(shi)進(jin)氣(qi)閥口8開大或(huo)(huo)關小(xiao)、提高(gao)了(le)對閥芯控制(zhi)的(de)(de)(de)靈敏(min)度(du)，即提高(gao)了(le)穩壓(ya)(ya)(ya)(ya)(ya)(ya)精度(du)。

減壓(ya)閥的(de)基本作用(yong)原理是靠閥內流道(dao)對(dui)水流的(de)局部阻(zu)力降(jiang)低水壓(ya)，水壓(ya)降(jiang)的(de)范圍由(you)連接閥瓣的(de)薄膜(mo)或活塞兩(liang)側的(de)進出口水壓(ya)差自動(dong)調節。

定(ding)比(bi)(bi)減(jian)(jian)壓(ya)(ya)(ya)原理(li)是利(li)用閥體中浮動(dong)(dong)活(huo)塞的水(shui)(shui)壓(ya)(ya)(ya)比(bi)(bi)控制，進(jin)出(chu)口端減(jian)(jian)壓(ya)(ya)(ya)比(bi)(bi)與進(jin)出(chu)口側(ce)活(huo)塞面(mian)積比(bi)(bi)成(cheng)反比(bi)(bi)，這種(zhong)減(jian)(jian)壓(ya)(ya)(ya)閥工作平穩無振(zhen)動(dong)(dong)，使(shi)得國內(nei)減(jian)(jian)壓(ya)(ya)(ya)閥生產技術進(jin)一步(bu)提高(gao)；閥體內(nei)無彈(dan)(dan)簧，故(gu)無彈(dan)(dan)簧銹蝕、金屬疲勞失效之(zhi)慮(lv)；密封性能良好(hao)不(bu)滲漏，因而既減(jian)(jian)動(dong)(dong)壓(ya)(ya)(ya)（水(shui)(shui)流(liu)動(dong)(dong)時）又減(jian)(jian)靜壓(ya)(ya)(ya)（流(liu)量(liang)(liang)為0時）；特別是在減(jian)(jian)壓(ya)(ya)(ya)的同時不(bu)影(ying)響水(shui)(shui)流(liu)量(liang)(liang)。減(jian)(jian)壓(ya)(ya)(ya)閥通常有DN15～DN100等多種(zhong)規(gui)格，閥前、后的工作壓(ya)(ya)(ya)力分(fen)別為<1MPa和0．1～0．5MPa，調壓(ya)(ya)(ya)范圍誤差為±5%～10%。

接管口徑021/4

可選項aB帶托架

可選項b-無自動排水器

可選項cG圓形壓力表(帶限位指示器)，無設定螺母(面板安裝用)

SMC大流量型減壓閥/日本SMC空氣過濾器