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进口气动隔膜调节阀(德国进口10)
【进口气动隔膜调节阀】详细说明:
气动隔膜调节阀具有结构简单、流路阻小、流通力较同口径的其它阀大,无泄漏,能用于高粘度及悬浮颗粒流体的调节,根据隔膜材料的不同(橡胶或聚四氟乙烯)适用于调节强碱、强腐蚀性介质。由隔膜阀配用气动薄膜执行机构组成。隔膜与阀体间“山”形凸出面进行密封,与外界隔开(无填料函),适合于要求耐腐蚀、剧毒场合。气动隔膜调节阀采用模块化设计,可采用不同组合、配用多种附件。其主要特点如下:
(1) 采用轻型执行机构,高度及重量均可减小30%。
(2) 阀内表面有多种材料涂复层,避开介质直接接触,承受强阀腐蚀性介质的腐蚀。
(3) 阀门关闭时,内、外泄漏量为零,适合于剧毒介质或不允许污染介质的阀节。
(4) 流路简单,阻力小,额定流量系数比同口径单座,套筒调节阀大。
Pneumatic diaphragm control valve has simple structure, small flow resistance, larger flow force than other valves of the same caliber, no leakage, and can be used for adjusting high viscosity and suspended particle fluid. According to the different diaphragm materials (rubber or PTFE), it is suitable for adjusting strong alkali and corrosive media. The utility model is composed of a diaphragm valve and a pneumatic film actuator. The hill-shaped protrusion between the diaphragm and the valve body is sealed and separated from the outside (without packing box), which is suitable for the occasions requiring corrosion resistance and severe toxicity. The pneumatic diaphragm control valve adopts modular design, which can adopt different combinations and various accessories. Its main characteristics are as follows:
(1) With light actuator, the height and weight can be reduced by 30%.
(2) The inner surface of the valve is coated with a variety of materials to avoid direct contact with the medium and to withstand the corrosion of the corrosive medium of the strong valve.
(3) When the valve closes, the internal and external leakage is zero, which is suitable for valve sections with highly toxic or non-polluting media.
(4) The flow path is simple, the resistance is small, the rated flow coefficient is bigger than that of single seat with the same caliber, and the sleeve regulating valve is bigger.
【进口气动隔膜调节阀】应用原理:
调节阀由执行机构和阀体组成。内含饲服功能,接受统一的4-20mA或1-5V.DC的标准信号,将电流信号转变成相对应的直线位移,自动地控制调节阀开度,达到对管道内流体的压力、流量、温度、液位等工艺参数的连续调节。广泛应用于电力、冶金、化工、石油、轻纺、制药、造纸等工业部门的生产自动化控制。
·调节阀又名流量控制阀,在工业自动化过程控制领域中,通过接受调节控制单元输出的控制信号,调节阀借助动力操作去改变介质流量、压力、温度、液位等工艺参数的终控制元件。一般由执行机构和阀门组成。如果按行程特点,调节阀可分为直行程和角行程;按其所配执行机构使用的动力,按其功能和特性分为线性特性,等百分比特性及抛物线特性三种。适用于空气、水、蒸汽、各种腐蚀性介质、泥浆、油品等介质。
【进口气动隔膜调节阀】结构特点:
1、结构紧凑、启闭迅速、流道畅通、流体阻力小。
2、密封性能好:利用四面阀座材料聚四氟乙烯弹性变形实现无泄漏密封。
3、一阀多用:任一通口可用作入口而无泄漏,三通既可制成L型通口,也可制成T型通口。
4、维修方便:在系统卸压后,无需拆下整个阀体就可进行检查和维修。
5、泛适用于供水、石化、冶金、矿山、轻纺、能源、造纸、食品、钢铁等管路系统中对介质流向进行切换以及对介质的分流或混合流体。
通球阀介质流向原理:
㉧三通球阀分L型和T型,介质流通方向见下图。
㉧L型三通球阀适用于介质流向的切换,能使相互垂直的两个通道连通:
㉧T型三通球阀适用于介质的分流、合流或流向切换,T型孔道可以使三个通道互相连通或使其中两个通道连通,三通球阀一般采用两个阀座结构,亦可根据用户要求采用四阀座结构。