一、进口电动脱硫蝶阀产品概述
进口电动脱硫蝶阀(美国威盾VTON),Electric desulfurization butterfly valve,是指由角行程电动执行器和脱硫蝶阀组成,是美国威盾VTON专为电厂脱硫脱硝工程而设计,充分考虑了脱硫浆液对阀门的腐蚀和磨损,保证阀板衬里是唯一能够接触到浆液的部件,而其他部件不被石灰石(或石灰膏)浆液腐蚀。因此,阀体和阀杆就不需要采用昂贵的合金(2205)材料,从而大大节约了成本。脱硫蝶阀独特的阀座设计完全把阀体与流体介质隔开,与其他同类阀门比较,它有更佳的阀座牢固方式、就地更换阀座快捷、阀门保持零泄漏、且摩擦小。蝶阀阀板采用高性能合金(2205)材料,有效抵御浆液的腐蚀和磨损。
Electric desulfurization butterfly valve (VTON) is composed of an angle stroke electric actuator and a desulfurization butterfly valve. It is specially designed by VTON for power plant desulfurization and denitrification projects, fully considering the corrosion and wear of desulfurization slurry on the valve, ensuring that the valve plate lining is the only component that can come into contact with the slurry, while other components are not corroded by limestone (or lime paste) slurry. Therefore, the valve body and stem do not require expensive alloy (2205) materials, greatly saving costs. The unique valve seat design of the desulfurization butterfly valve completely separates the valve body from the fluid medium. Compared with other similar valves, it has a better way to secure the valve seat, quick on-site replacement of the valve seat, zero leakage of the valve, and low friction. The butterfly valve plate is made of high-performance alloy (2205) material, which effectively resists the corrosion and wear of the slurry.
二、进口电动脱硫蝶阀产品特点
1、电动脱硫蝶阀主要结构由阀体,阀瓣,阀座,阀杆及传动操作机构等部件组成,阀座采用可脱卸构造,并可根据不同介质的物理化学特性,选用相应的耐高温,耐低温,耐腐蚀,耐光,耐老化材质。
2、电动脱硫蝶阀采用中线型结构无偏心设计,具有显著的操作扭矩低的特征,配置电动装置时的经济性显著;采用衬胶结构,蝶板圆周形密封面精密加工至较高的光洁度,对橡胶阀座的摩擦系数极低,阀门使用寿命较长;阀板密封面流态特性呈线性状态,具有较小的流阻系数,阀门流阻小;独特设计的模压橡胶阀座具有极佳的均衡性和支撑性,有效避免受力不均造成的对橡胶的破坏,阀门处全关位置时,橡胶处于最佳的压缩状态以保持零泄漏。
3、电动脱硫蝶阀球墨铸铁壳体内外表面可采用高温静电喷涂环氧树脂粉末涂层,涂层具有较高的耐腐蚀性能,与球墨铸铁基体具有极高的结合强度,涂层度为0.2—0.5mm。
4、电动脱硫蝶阀配VTD、VTHQ等系列电动执行机构,AC220V或AC380V电源就可进行开关控制。无需另配伺服放大器,输入(4-20mADC或1-5ADC)信号,实现对压力、流量、温度等参数的调节。
三、进口电动脱硫蝶阀的技术参数
公称通径:DN50-600(mm)
公称压力:1.0-1.6MPa
连接方式:对夹、法兰
阀体材料:HT200、QT400
阀板材料:双相不锈钢 1.4529、双相不锈钢2507
阀座:EPDM
电动执行器防护等级:IP67 (可选IP68)
四、进口电动脱硫蝶阀外形尺寸 单位:mm
通径 DN | L | H | 1.0MPa | 1.6MPa | 电动执行器选配 AC220V/AC380V | |||||
D | D1 | n-d | D | D1 | n-d | |||||
50 | 42 | 197 | 165 | 125 | 4-18 | 165 | 125 | 4-18 | VTD-05 | VTHQ-05 |
65 | 44 | 217 | 185 | 145 | 4-18 | 185 | 145 | 4-18 | VTD-05 | VTHQ-05 |
80 | 44 | 232 | 200 | 160 | 8-18 | 200 | 160 | 8-18 | VTD-05 | VTHQ-05 |
100 | 50 | 266 | 220 | 180 | 8-18 | 220 | 180 | 8-18 | VTD-08 | VTHQ-08 |
125 | 56 | 293 | 250 | 210 | 8-18 | 250 | 210 | 8-18 | VTD-10 | VTHQ-10 |
150 | 56 | 319 | 285 | 240 | 8-23 | 285 | 240 | 8-23 | VTD-20 | VTHQ-20 |
200 | 60 | 389 | 340 | 295 | 8-23 | 340 | 295 | 12-23 | VTD-40 | VTHQ-50 |
250 | 68 | 456 | 395 | 350 | 12-23 | 405 | 355 | 12-28 | VTD-60 | VTHQ-60 |
300 | 78 | 520 | 445 | 400 | 12-23 | 460 | 410 | 12-28 | VTD-80 | VTHQ-80 |
350 | 78 | 587 | 505 | 460 | 16-23 | 520 | 470 | 16-28 | VTD-100 | VTHQ-120 |
400 | 102 | 649 | 565 | 515 | 16-28 | 580 | 525 | 16-31 | VTD-200 | VTHQ-200 |
450 | 114 | 713 | 615 | 565 | 20-28 | 640 | 585 | 20-31 | VTD-300 | VTHQ-300 |
500 | 127 | 786 | 670 | 620 | 20-28 | 715 | 650 | 20-34 | VTD-400 | VTHQ-400 |
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