(水，氣)蒸汽安全閥
簡要描述：RETZ (水，氣)進口蒸汽安全閥主要用于蒸汽、天然氣、油品、冷熱水、燃氣等領域，作為超壓保護裝置，具有動作精度高，重復性好，回座準確，操作維護方便
品牌：RETZ- 工況條件：蒸汽安全閥
- 溫度/壓力：P-T:16bar-350℃
- 更新時間：2022/08/25
主要性能 Main performance
(水，氣)進口蒸汽安全閥用在鍋爐、壓力容器、管路等受壓設備上作為超壓保護裝置。當被保護設備內介質壓力異常升高，超過規定值
時，閥門自動開啟，繼而全量排放，以防止壓力繼續升高，當壓力降低到規定值時，閥門自動關閉，保證設備正常運行 RETZ Imported steam safety valves are used as overpressure protection devices on pressure equipment such as boilers, pressure vessels and pipelines. When the medium pressure in the protected equipment rises abnormally and exceeds the specified value, the valve will automatically open and then discharge the full amount to prevent the pressure from rising continuously. When the pressure drops to the specified value, the valve will automatically close to ensure the normal operation of the equipment.
連接口徑：DN20/32~DN150/250（法蘭連接）Connection diameter: DN20 / 32 ~ DN150 / 250 (flange connection)
流通孔徑DO（mm）18-125 Flow hole diameter do (mm) 18-125
流通面積AＯ（mm）254-12266 Flow area Ao (mm) 254-12266
結構 Structure
901型：全封閉，帶手把
902型：開窗，不帶手把
911型：全封閉，不帶手把
912型：閥蓋封閉，閥帽開窗，帶手把
主要零件材料 Main parts and materials
零件名稱 | 零件材料代號 | ||||
碳鋼 | 鉻鉬鋼 | 鉻鉬釩鋼 | 不銹鋼304 | 不銹鋼316 | |
閥體 | WCB | ZG1Cr5Mo | ZG15Cr1Mo1VZG20CrMoV | zG1Cr18Ni9Ti CF8(304) | ZG1Cr18Ni12Mo2Ti |
閥瓣、閥桿 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni9T(304) | 316 |
導向套、反沖盤 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18NiT(304) | 316 |
閥蓋 | WCB | WCB | ZG1Cr5Mo | WCB/ZG1Cr18Ni9Ti | ZG1Cr18Ni9Ti |
密封面材料 | 鐵基合金 | 鈷基合金 | 鈷基合金 | 鈷基合金 | 鈷基合金 |
彈簧 | 50CrVA | 50CrVA | 50CrVA/30W4Cr2VA | 50CrVA(纏繞四氟) | 50CrVA(纏繞四氟) |
進口蒸汽安全閥 整定壓力分級 RETZ Setting pressure classification of inlet steam safety valve
公稱壓力(MPa)) | 整定壓力Pk(MPa) | |||||||
1.6 | >0.1~0.16 | >0.16~0.25 | >0.25~0.4 | >0.4~0.6 | >0.6~0.8 | >0.8~1.0 | >1.0~1.3 | >1.3~1.6 |
2.5 | >1.3~1.6 | >1.6~2.0 | >2.0~2.5 | |||||
4 | >1.3~1.6 | >1.6~2.0 | >2.0~2.5 | >2.5~3.2 | >3.2~4.0 | |||
6.4 | >2.5~3.2 | >3.2~4.0 | >4.0~5.0 | >5.0~6.4 | ||||
10 | >3.2~4.0 | >4.0~5.0 | >5.0~6.4 | >6.4~8.0 | >8.0~10.0 | |||
16 | >8.0~10.0 | >10~13 | >13~16 | |||||
32 | >13~16 | >16~19 | >19~22 | >22~25 | >25~29 | >29~32 | ||
性能規范 Performance specification
注:Pk為整定壓力，do為喉徑 Note: PK is the set pressure, do is the throat diameter
性能規范適用介質 | 殼體試驗壓力Ps(MPa) | 密封試驗壓力PM(MPa) | 啟閉壓差△P ((MPa) | 排放壓力Pp ((MPa) | 開啟高度H(mm) | |
蒸氣用安全閥 | 1.5PN | 90%Pk或回座壓力最小值,取二者較小值 | Pk≤0.4時為≤0.04Pk>0.4時為≤10%Pk | ≤1.03Pk | 全啟式 | ≥1/4do |
微啟式 | ≥1/20 do | |||||
空氣或其他氣體用安全閥 | Pk<0.3時為Pk-0.03;Pk≥0.3時為90%Pk | Pk≤0.2時為≤0.03Pk>0.2時為≤15%Pk | ≤1.1Pk | 全啟式 | ≥1/4do | |
微啟式 | ≥1/20 do | |||||
水或其他液體用安全閥 | Pk≤0.3時為≤0.06Pk>0.3時為≤20%Pk | ≤1.2Pk | 全啟式 | ≥1/4do | ||
微啟式 | ≥1/20 do | |||||
(水，氣)進口蒸汽安全性能特點∶ RETZ Performance characteristics
排量大,內部閥體在設計上能夠提供良好的流動剖面 Large displacement, internal valve body can provide good flow profile in design
采用自定心閥塞,對密封面進行平衡處理，使其高度密封 Self centering valve plug is used to balance the sealing surface to make it highly sealed
配備作桿定位器的螺紋軸，便于即時手動操作 Equipped with a threaded shaft as a rod positioner for immediate manual operation
提升器采用不受密封影響的設計，使閥門在蒸汽膨脹時容易立即開啟，保證精確地控制閥門的開閉 The lifter adopts a design that is not affected by sealing, so that the valve can be easily opened immediately when the steam expands, and the opening and closing of the valve can be accurately controlled
不同K值氣體特性系數C值 Gas characteristic coefficient C of different K values
K | C | K | C | K | C | K | C |
1 | 315 | 1.2 | 337 | 1.4 | 356 | 1.6 | 372 |
1.02 | 318 | 1.22 | 339 | 1.42 | 358 | 1.62 | 374 |
1.04 | 320 | 1.24 | 341 | 1.44 | 359 | 1.64 | 376 |
1.06 | 322 | 1.26 | 343 | 1.46 | 361 | 1.66 | 377 |
1.08 | 324 | 1.28 | 345 | 1.48 | 363 | 1.68 | 379 |
1.1 | 327 | 1.3 | 347 | 1.5 | 364 | 1.7 | 380 |
1.12 | 329 | 1.32 | 349 | 1.52 | 366 | 2 | 400 |
1.14 | 331 | 1.34 | 351 | 1.54 | 368 | 2.2 | 412 |
1.16 | 333 | 1.36 | 352 | 1.56 | 369 | ||
1.18 | 335 | 1.38 | 354 | 1.58 | 371 |
安全閥額定排量計算RETZ Calculation of rated displacement of safety valve
介質為氣體 The medium is gas
介質為液體 The medium is liquid
介質為飽和蒸汽 The medium is saturated steam
安裝示意圖 Installation diagram
在線客服