电力行业专业阀系列四川勃朗蜀威科技有限公司河北办事处

  • BTO:VV阀(通风阀)

    发布日期:2018-12-1 10:21:25浏览次数:284

    BTO:VV阀(通风阀)

      BTO:VV阀(通风阀)

      BTO:VV阀是一种全新概念的先导式套筒截止阀,这种结构形式的阀门关闭严密、耐冲刷、抗汽蚀,特别适合火电厂高温高压、大压差以及控制饱和水等极易发生闪蒸、汽蚀、冲刷的运行环境,如可用于蒸汽疏水、本体疏水、抽汽疏水、锅炉排污以及调节阀前后关断位置等。

      1、节流面与密封面分开,流体在通过密封面之前,经过了对冲等节流过程,有效降低了速度,保护了密封面。

      2、.阀芯阀座采用线密封形式密封、密封比压大、关闭严密。

      3、阀芯与阀杆采用浮动连接,并有套筒导向,不会因为阀杆与阀芯不同心而影响其关断性及严密性。

      VV阀的控制逻辑为:电磁阀带电时,VV阀气缸内压缩空气泄掉,VV阀开启;电磁阀失电时,压缩空气进入VV阀气缸内,VV阀关闭。

    BTO:vent valve is a kind of pilot-operated type sleeve globe valve, the valve in this structure with tight closure, abrasion resistance and anti-cavitations, which is specially suitable for the operation environment of high temperature, high pressure, and large differential pressure and to control the saturated water etc. which might happen flash, cavitations or abrasion, the valve could be applied on the location of steam water discharge, noumenon water discharge, air exhaust water discharge, boiler blow-off and the location of shut off the regulating valve.

    The throttle surface and seal surface are divided, the fluid through the process of hedging throttling before pass the seal surface, which reduced the speed and protect the seal surface.

    The sealing type of valve element and valve seat is line sealing, with high seal pressure and tight closure.

    The floating connection was applied on valve element and rod, and with sleeve oriented, the shutoff and tight performance will not be influenced if valve rod and element are non-concentric.

    The control logic of vent valve is: when solenoid valve is electrification, the compressed air in vent valve cylinder will be discharged and then vent valve will be opened; when solenoid valve is in power-lossing, the compressed air will get into the vent valve cylinder and then vent valve will be closed.


      技术参数:

      1、阀门结构:采用先导式多孔套筒结构

      2、公称通径:DN100~DN600

      3、公称压力:PN6.3~PN42.0Mpa

                     ANSI CLASS 300~2500#

      4、阀体材质:WCB、WC6、WC9、CF8、CF8M、   CF3M

      5、阀内主件材质:304、316、316L、F11、F22、420+STL

      6、泄漏等级:Ⅳ~Ⅵ级

      7、控制方式:电动和气动


      特殊阀尺寸和重量可咨询公司技术部

      附加规格与特殊订货要求

      以下使用环境条件和附加规格要求,均需在订货合同中,作为特殊订货要求签订。

      材料的特殊检查、无损检测

      禁油、禁水、禁铜处理

      外裸支架、螺栓螺母的防腐要求

      高温地区、低温地区户外使用要求

      提供制造记录、试验报告、调试报告

      特殊配管和接头

      防盐害、防砂、防尘要求

      真空条件下使用


      订货须知

      订货时需提出以下要求:

      公称通径、阀座直径或流量系数Cv

      公称压力,法兰标准,是否全保温?接管通径

      阀体材质、阀内件材质

      流量特性

      执行机构型式(气动、电动)

      安全要求(故障关/故障开)

      工艺介质:密度、温度、流量、压力(P1、P2)

      阀门附件:阀门定位器、过滤减压阀、阀位变送器、电磁阀、行程开关等的型号、信号及防爆要求,手轮机构及型式(顶式、旁式)等。