摘要
针对燃气、烟气、毒气等介质输送管道用阀门密封要求零泄漏、安全可靠、使用寿命长等特点,研制出一种新型燃气切断阀,该阀门采用在双闸板双密封座闸阀中腔充水密封的方式,实现管道介质的完全切断和流通,确保密封零泄漏;两闸板中腔采用丝杆丝母压紧楔块膨胀楔紧密封,关闭阀门时,丝杆轴向力通过楔块转化为密封副密封力,密封可靠;开启阀门时,丝杆提起楔块,闸板与阀体密封座瞬间脱离,密封副无摩擦、无磨损、启闭轻便、使用寿命长。针对阀腔内长期使用水渗漏减少而造成密封不可靠问题,进而升级设计出一种自动水封燃气切断阀,实现自动补水,确保了设备使用的可靠性。该阀已成功应用于冶金、石油、化工、电力和市政工程的燃气、烟气、毒气输送等工程管道。
In view of the sealing requirements of valves for gas,flue gas,poisonous gas and other medium transportation pipelines,which require zero leakage,safety,reliability,and long service life,a new type of gas cut-off valve is developed.Water sealing is used to completely cut off and circulate the pipeline medium,ensuring zero sealing leakage;the middle cavities of the two gate plates are tightly sealed with screw nut compression wedges and expansion wedges.When the valve is closed,the axial force of the screw rod passes through the wedges.It is converted into the sealing force of the sealing pair,and the sealing is reliable;when the valve is opened,the screw rod lifts the wedge,and the gate plate and the valve body sealing seat are instantly separated.The sealing pair has no friction and wear,is easy to open and close,and has a long service life.In order to solve the problem of unreliable sealing caused by reduced water leakage in the valve cavity due to long-term use,an automatic water-sealed gas cut-off valve was upgraded and designed to realize automatic water replenishment and ensure the reliability of the equipment.This valve has been successfully used in metallurgy,Engineering pipelines for gas,flue gas,toxic gas transportation in petroleum,chemical industry,electric power and municipal engineering.
作者
周振峰
斯泽辉
林松道
王儒霖
毛银杰
ZHOU Zhen-feng;SI Ze-hui;LIN Song-dao;WANG Ru-lin;MAO Yin-jie(NingBo No.1 Machinery Valve Manufac Co.,Ltd.,Ningbo 315500,Zhejiang,China)
出处
《阀门》
2024年第4期438-440,共3页
VALVE MAGAZINE
关键词
自动
水封
燃气切断
系统构成
工作原理
automatic
water seal
gas cutoff
system composition
working principle
