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弹簧全启式安全阀 (W系列) Spring loaded full lift type safety valve (W series)
A68Y 说明 Instructions
W系列弹簧全启式安全阀主要用于电站锅炉、压力容器、减温减压装置上,保证设备安全运行。
W系列弹簧全启式安全阀 结构简述
1、弹簧全启式安全阀具有结构简单,密封性能好,开启压力准确,排放能力大,回座压差小,调整方便等特点。
2、喷嘴型阀座∶阀座为拉伐尔喷嘴型阀座,蒸汽流经阀座出口处时达到音速,排放系数大,阀座密封面堆焊钴铬钨硬质合金,耐磨抗冲蚀,寿命长。
3、热弹性阀瓣∶阀瓣设计为热弹性结构,利用其在介质压力下微小的变形,提高密封能力,克服安全阀在介质压力下临近整定压力时的前泄现象。阀瓣密封面采用先进的淬火技术,提高了硬度、耐磨性、抗冲抗性。
4、上调节圈∶通过调整上调节圈,改变由阀座排放出的介质流动方向,使阀门获得合适的回座压力,
5、下调节圈∶通过下调节圈,使阀门在启跳时迅速达到全开。
6、背压调整套;调整阀瓣背压的辅助机构,通过背压调整套调整,可获得合适的回座压差。
主要外形及连接尺寸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型安全阀主要连接尺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 |