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| 產品參數 | |||
|---|---|---|---|
| 品牌 | 奇眾 | ||
| 連接形式 | 螺紋 | ||
| 類型(通道位置) | 二通式 | ||
| 驅動方式 | 手動 | ||
| 規格 | DN50 | ||
| 地市 | 上海市 | ||
| 可售賣地 | 全國 | ||
| 材質 | 不銹鋼 | ||
| 型號 | YK43X | ||
| 貨號 | TB-625185361186 | ||
活塞式氣體減壓閥介紹
活塞式氣體減壓閥是采用控制閥體內的啟閉件的開度來調節介質的流量，將介質的壓力降低，同時借助閥后壓力的作用調節啟閉件的開度，使閥后壓力保持在一定范圍內，并在閥體內或閥后噴入冷卻水，將介質的溫度降低，這種閥門稱為減壓減溫閥。
活塞式氣體減壓閥工作原理
先導活塞式氣體減壓閥由主閥和導閥兩部分組成。主閥主要由閥座、主閥盤、活塞、彈簧等零件組成。導閥主要由閥座、閥瓣、膜片、彈簧、調節彈簧等零件組成。通過調節調節彈簧壓力設定出口壓力、利用膜片傳感出口壓力變化，通過導閥啟閉驅動活塞調節主閥節流部位過流面積的大小，實現減壓穩壓功能。
活塞式氣體減壓閥應用范圍
活塞式氣體減壓閥產品主要用于氣體管路，如空氣、氮氣、氧氣、氫氣、液化氣、天然氣等氣體。
活塞式氣體減壓閥工作原理及其結構
減壓閥出廠時，調節彈簧處于未壓縮狀態，此時主閥瓣和付閥瓣處于關閉狀態，使用時按順時針方向轉動調節螺釘，壓縮調節彈簧，使膜片下移頂開付閥瓣，介質由a孔進入活塞上方，活塞在介質壓力的作用下，向下移動推動主閥瓣離開主閥座，使介質流向閥后，同時由c孔進入膜片下方，當閥后壓力超過調定壓力時，推動膜片上移壓縮調節彈簧。付閥瓣隨之向關閉方向移動，使流入活塞上方的介質減小，壓力也隨之下降，此時主閥瓣在主閥瓣彈簧力的推動下上移，使主閥瓣與主閥座的間隙減小，介質流量隨之減少，使閥后壓力隨之下降到新的平衡，反之當閥后壓力低于調定壓力時，主閥瓣和主閥座間隙增大，介質流量隨之增加，使閥后壓力隨之增高達到新的平衡。
活塞式氣體減壓閥標準規范
設計制造標準：GB12246?
結構長度標準：GB/T 12221-2005
連接法蘭標準：GB/T 9113
壓力溫度等級：GB/T 12224-2005
試驗檢驗標準：GB/T 13927-2008
活塞式氣體減壓閥主要技術參數
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tttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt| 公稱壓力(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| 殼體試驗壓力(Mpa)* | 2.4 | 3.75 | 6.0 | 9.6 | 15.0 | 24 |
| 密封試驗壓力(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| 高進口壓力(Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| 出口壓力范圍(Mpa) | 0.1-1.0 | 0.1-1.6 | 0.1-2.5 | 0.5-3.5 | 0.5-3.5 | 0.5-4.5 |
| 壓力特性偏差(Mpa)△P2P | GB12246-1989 | |||||
| 流量特性偏差(Mpa)P2G | GB12246-1989 | |||||
| 小壓差(Mpa) | 0.15 | 0.15 | 0.2 | 0.4 | 0.8 | 1.0 |
| 滲漏量 | X/F(聚四氟乙稀/橡膠)：O Y(硬密封)：GB12245-1989 | |||||
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殼體試驗不包括膜片、頂蓋
活塞式氣體減壓閥流量系數(Cv)
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tttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt| DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 500 |
| Cv | 1 | 2.5 | 4 | 6.5 | 9 | 16 | 25 | 36 | 64 | 100 | 140 | 250 | 400 | 570 | 780 | 1020 | 1500 |
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活塞式氣體減壓閥零件材料與工況
tttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt| 零件名稱 | 零件材料 |
| 閥體 閥蓋 底蓋 | WCB/FCB* |
| 閥座 閥盤 | 2Cr13/304* |
| 缸套 | 2Cr13/25(鍍硬鉻)/304* |
| 活塞 | 2Cr13/銅合金/銅合金* |
| 活塞環 | 合金鑄鐵/對位聚苯* |
| 導閥座 導閥桿 | 2Cr13/304* |
| 膜片 | 1Cr18Ni9Ti |
| 主閥 導閥彈簧 | 50CrVA |
| 調節彈簧 | 60Si2Mn |
| 密封墊(X/F型號) | 橡膠/聚四氟乙稀 |
| 導閥體 導閥蓋 | 25/304* |
