| 品牌 | 其他品牌 | 結構形式 | 活塞式 |
|---|
本產品主要用于(yu)蒸汽(qi)管路(lu)，起減(jian)壓(ya)穩壓(ya)作用。
內螺紋蒸(zheng)汽(qi)減(jian)壓閥Y13H適用范(fan)圍
當(dang)前減壓閥(fa)系列產品適(shi)用(yong)于(yu)城建、化工、冶金、石(shi)油、制藥、食品、飲料、環保等行(xing)業(ye)。
主(zhu)要技術參數和性能指標
| 公稱壓力(Mpa) | 1.6 | 2.5 |
|---|---|---|
| 殼體試驗壓力(Mpa)* | 2.4 | 3.75 |
| 密封試驗壓力(Mpa) | 1.6 | 2.5 |
| 進口壓力(Mpa) | 1.6 | 2.5 |
| 出口壓力范圍(Mpa) | 0.1-1.0 | 0.1-1.6 |
| 壓力特性偏差(Mpa)△P2P | GB12246-1989 | |
| 流量特性偏差(Mpa)△P2G | GB12246-1989 | |
| 小壓差 | 0.15 | 0.15 |
| 滲漏量 | GB12245-1989 | |
*.殼體試驗不包括膜片、頂蓋。
主要零件材料
| 零件名稱 | 零件材料 | #FormatImgID_0# |
|---|---|---|
| 閥體 閥蓋 底蓋 | WCB | |
| 閥座 閥盤 | 2Cr13 | |
| 缸套 | 2Cr13/25(鍍硬鉻) | |
| 活塞 | 2Cr13/銅合金 | |
| 活塞環 | 合金鑄鐵 | |
| 導閥座 導閥桿 | 2Cr13 | |
| 膜片 | 1Cr18Ni9Ti | |
| 主閥彈簧 | 50CrVA | |
| 導閥主彈簧 | 50CrVA | |
| 調節彈簧 | 60Si2Mn |
流量系數(Cv)
| DN | 15 | 20 | 25 | 32 | 40 | 50 |
|---|---|---|---|---|---|---|
| Cv | 1 | 2.5 | 4 | 6.5 | 9 | 16 |
連接尺寸
| 公稱通徑DN | G | L | H | Hl |
|---|---|---|---|---|
| 15 | 1/2" | 140 | 295 | 90 |
| 20 | 3-4" | 140 | 330 | 98 |
| 25 | 1" | 160 | 330 | 110 |
| 32 | 1-1/4" | 180 | 330 | 110 |
| 40 | 1-1/4" | 200 | 345 | 125 |
| 50 | 2" | 230 | 345 | 125 |
先導式減壓(ya)閥的(de)結(jie)構圖(tu),與直動式減壓(ya)閥相比(bi)，該閥增(zeng)加了由噴(pen)(pen)嘴(zui)4、擋(dang)板3、固定節流孔(kong)9及氣室B所組成的(de)噴(pen)(pen)嘴(zui)擋(dang)板放大環(huan)節。當噴(pen)(pen)嘴(zui)與擋(dang)板之間的(de)距離發生微小變(bian)化時，就會(hui)使B室中的(de)壓(ya)力發生根明(ming)顯的(de)變(bian)化，從而(er)引(yin)起膜片10有較大的(de)位移，去(qu)控制閥芯(xin)(xin)6的(de)上下移動，使進(jin)氣閥口8開大或關小、提高(gao)了對閥芯(xin)(xin)控制的(de)靈(ling)敏度(du)，即提高(gao)了穩壓(ya)精(jing)度(du)。
蒸汽、水(shui)(shui)用減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥當減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥的(de)輸(shu)出壓(ya)(ya)(ya)(ya)(ya)力較(jiao)高(gao)或通徑(jing)較(jiao)大時，用調(diao)(diao)(diao)壓(ya)(ya)(ya)(ya)(ya)彈簧直(zhi)接(jie)調(diao)(diao)(diao)壓(ya)(ya)(ya)(ya)(ya)，則(ze)彈簧剛(gang)度必然過大，流量變(bian)化時，輸(shu)出壓(ya)(ya)(ya)(ya)(ya)力波動(dong)(dong)較(jiao)大，閥的(de)結構尺寸也將(jiang)增大。蒸汽、水(shui)(shui)用減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥為(wei)了克(ke)服這些缺點，上海(hai)祝(zhu)茂閥門(men)生(sheng)產減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥可采用先(xian)導(dao)式(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥。先(xian)導(dao)式(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥的(de)工作原(yuan)理與直(zhi)動(dong)(dong)式(shi)(shi)(shi)的(de)基本相同。先(xian)導(dao)式(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥所用的(de)調(diao)(diao)(diao)壓(ya)(ya)(ya)(ya)(ya)氣體(ti)，是由小(xiao)(xiao)型的(de)直(zhi)動(dong)(dong)式(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥供給的(de)。若把小(xiao)(xiao)型直(zhi)動(dong)(dong)式(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥裝在(zai)閥體(ti)內部，則(ze)稱(cheng)為(wei)內部先(xian)導(dao)式(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥;若將(jiang)小(xiao)(xiao)型直(zhi)動(dong)(dong)式(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥裝在(zai)主閥體(ti)外(wai)部，則(ze)稱(cheng)為(wei)外(wai)部先(xian)導(dao)式(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥。
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