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彈簧全啟式安全閥 (W系列) Spring loaded full lift type safety valve (W series)
A68Y 說明 Instructions
W系列彈簧全啟式安全閥主要用于電站鍋爐、壓力容器、減溫減壓裝置上,保證設備安全運行。
W系列彈簧全啟式安全閥 結構簡述
1、彈簧全啟式安全閥具有結構簡單,密封性能好,開啟壓力準確,排放能力大,回座壓差小,調整方便等特點。
2、噴嘴型閥座∶閥座為拉伐爾噴嘴型閥座,蒸汽流經閥座出口處時達到音速,排放系數大,閥座密封面堆焊鈷鉻鎢硬質合金,耐磨抗沖蝕,壽命長。
3、熱彈性閥瓣∶閥瓣設計為熱彈性結構,利用其在介質壓力下微小的變形,提高密封能力,克服安全閥在介質壓力下臨近整定壓力時的前泄現象。閥瓣密封面采用先進的淬火技術,提高了硬度、耐磨性、抗沖抗性。
4、上調節圈∶通過調整上調節圈,改變由閥座排放出的介質流動方向,使閥門獲得合適的回座壓力,
5、下調節圈∶通過下調節圈,使閥門在啟跳時迅速達到全開。
6、背壓調整套;調整閥瓣背壓的輔助機構,通過背壓調整套調整,可獲得合適的回座壓差。
主要外形及連接尺寸Main external and connecting dimensions | |||||||||||
Type | DN Nominal diameter | Dimensions (mm) | |||||||||
L | L1 | Do | H | DN' | D | D1' | D2' | B' | Z'-d' | ||
A68Y-20 | 65 | 210 | 290 | 48 | 923 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-P5410V | 65 | 210 | 290 | 48 | 923 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-20 | 80 | 210 | 290 | 52 | 923 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-P5410V | 80 | 210 | 290 | 52 | 923 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-25 | 65 | 210 | 290 | 48 | 923 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-P5414V | 65 | 210 | 290 | 48 | 923 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-25 | 80 | 210 | 290 | 52 | 1,003 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-P5414V | 80 | 210 | 290 | 52 | 1,003 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-32 | 65 | 210 | 290 | 48 | 1,083 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-P5420V | 65 | 210 | 290 | 48 | 1,083 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-32 | 80 | 210 | 290 | 52 | 1,083 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-P5420V | 80 | 210 | 290 | 52 | 1,083 | 150 | 300 | 250 | 204 | 30 | 8-25 |
A68Y-10 | 150 | 310 | 525 | 100 | 1,158 | 300 | 485 | 430 | 390 | 36 | 16-30 |
A68Y-P543.82V | 150 | 310 | 525 | 100 | 1,158 | 300 | 485 | 430 | 390 | 36 | 16-30 |
A68Y-10 | 200 | 310 | 525 | 125 | 1,158 | 300 | 485 | 430 | 390 | 36 | 16-30 |
A68Y-P542.5V | 200 | 310 | 525 | 125 | 1,158 | 300 | 485 | 430 | 390 | 36 | 16-30 |
WFA68型安全閥主要連接尺Main connecting dimensions | ||||||||||
Type | DN Nominal diameter | Dimensions (mm) | ||||||||
L | L1 | Do | DN' | D | D1' | D2' | B' | Z'-d' | ||
WFA68E210/550V1 | 65 | 240 | 280 | 46 | 100 | 265 | 210 | 150 | 38 | 8-30 |
WFA68SB160/440C1 | 65 | 260 | 280 | 52 | 150 | 320 | 250 | 204 | 30 | 8-25 |
WFA68E210/400C1 | 80 | 190 | 305 | 58 | 150 | 340 | 280 | 204 | 38 | 8-34 |
WFA68E210/550V1 | 80 | 190 | 305 | 58 | 150 | 340 | 280 | 204 | 38 | 8-34 |
WFA68E210/550V2 | 80 | 190 | 305 | 60 | 150 | 300 | 250 | 204 | 30 | 8-25 |
WFA68E160/550V1 | 100 | 320 | 340 | 70 | 250 | 445 | 385 | 313 | 42 | 12-34 |
WFA68SB100V1 | 100 | 260 | 325 | 80 | 150 | 300 | 250 | 204 | 30 | 8-25 |
WFA68SB100V2 | 100 | 260 | 325 | 85 | 150 | 300 | 250 | 204 | 30 | 8-25 |
WFA68SB100C1 | 150 | 305 | 385 | 115 | 250 | 445 | 385 | 313 | 42 | 12-34 |
WFA68SB100C2 | 150 | 305 | 385 | 110 | 250 | 445 | 385 | 313 | 42 | 12-34 |
WFA68SB100C3 | 150 | 305 | 385 | 120 | 250 | 445 | 385 | 313 | 42 | 12-34 |
WFA68SB100V1 | 150 | 305 | 385 | 115 | 250 | 445 | 385 | 313 | 42 | 12-34 |
WFA68SB100V2 | 150 | 305 | 385 | 100 | 250 | 445 | 385 | 313 | 42 | 12-34 |
WFA68SC2500C2 | 1 1/2" 40 | 155 | 165 | 18 | "3 300Lb | |||||
WFA68SC1500l1 | 2" 50 | 216 | 280 | 33 | "6 300Lb | |||||
WFA68SC1500C1 | 2 1/2" 65 | 216 | 280 | 40 | "6 300Lb | |||||
WFA68C1500C2 | 2 1/2" 65 | 216 | 305 | 46 | "6 300Lb |