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球阀的主要结构功能和防火防静电特点
来源:www.sdhuaya.com 2015-10-17
球阀的全通径及缩径结构
    FULL&REDUCE BORE
     为满足客户的不同需求,球阀设有全通径及缩径两大系列。全通径球阀的通道内径与管线内径一致,不但流体阻力最小,也便于管道清理。而缩径球阀的流体阻力比相同口径截止阀的流体阻力要低很多,重量比相同口径的球阀要轻30%左右,有效的降低了生产成本及价格,因而遂得到了较为广泛的使用。
In order to meet different needs of customers,we provide two serries of ball valves ,full bore and reduced bore ball valve .The channel inner diameter of full bore ball valves is consistent with the inner diameter of pipeline,which can not only minimize the fluid resistance but also facilitate pipeline cleaning.The fluid resistance of necked bore ball valves is much less than that of the globe valve with the same caliber while its weight is 30%lighter than ball valve with the same caliber .As result ,it can effectively reduce both the production cost and price ,and is relatively widely uesd.
           
阀杆防冲出及有效密封结构
      BLOW-OUT PROOF STEM

      阀杆采用下装式设置带有密封垫片的倒密封结构,倒密封的密封力随阀腔介质压力的增高增大,从而确保阀杆的密封效果。当阀腔异常升压时,阀杆不会被冲出。填料采用设计合理的V型结构,能将阀腔内部的介质压力及外部压盖的锁紧力有效的转化成阀杆的密封力。     The stem is downloading ,with its inverted sealingstructure with sealing gasket.The fore of inverted sealing struct willincrease while the medium pressure in the valve cavity increasing of the valve cavity increases to ensure the sealing effect of the stem. In case of abnormal pressure increasing of the valve cavity ,the stem won’t be impacted out .The filler is designed with proper V-shaped structure,which can effectively conver the medium pressure inside the valve cavity and the locking force of outer gland into the sealing force of stem.


球阀耐火结构
    FIRE SAFE SEAT SEALING
      根据用户的需要,球阀可设计成耐火结构,当万一发生火灾而使密封圈烧损时,球阀的各个密封部位均能形成金属对金属的硬密封结构,有效阻止介质的扩散,防止火灾扩大。
 According to the user's requirement,the ball valve can be designed with fire-resistant stucture.In case of a fire and the sealing ring is damaged,every sealing part of the ball valve can form the structure of metal-to-metal hard seal,which can prevent the spreading of both the media and fire.

球阀带锁结构
     INTERLOCKING DEVICE
      对安装在野外的或防止非工作人员误操作的,以及在有些震动较大的场合手柄受到撞击易产生误操作的阀门,在阀门的全开或全关的位置没有锁定孔,需要时可加锁,起到安全保险作用。
      For valve installed outdoor,those preventing improper operation of non-workers and valves,of which collision of its stem in relatively violent vibration occasions easily causes improper operation,a locking bore can be set in the fully open position or fully closed position and a lock can be used if needed,for the purpose of security insurance.
     
球阀防静电结构
     ANTI-STATIC DEVICE
      根u据用户需要,球阀可设计防静电结构,即在球体与阀杆,阀杆与阀体之间设置导电弹簧,使阀门在开启过程中产生的静电能通过所设置的静电通道传入管路导入地下,达到清除静电的目的。避免静电打火点燃易燃介质,确保系统安全。
      According to the user's requirement,the ball valve can be designed with anti-static structure;namely,fix the conductive spring between the ball and stem as well as stem and valve body,to enable the static generated when opening the valve to be transmitted to the pipeline through static channel and conducted underground and finally eliminate the static.It can prevent the static ignition form lighting the medium to ensure safety of the system.

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