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Oil and gas special valve in the selection of the need to consider the problem
The author: Time:2020/5/28

       为了实现对油气流的控制,油气专用阀应具备以下基本性能:密封性,耐压强度,安全性,可调节性,流体通流性及开关灵活性。对于高压、易燃、易爆的油气介质,首先要解决密封性,要考虑油气专用阀特殊工况要求:
       ①在含硫化氢及二氧化碳气体的湿天然气中,对阀体材质提出了特殊要求;
       ②在井口装置及集输系统中存在着卤水、残酸及其他腐蚀介质,对阀体材料的选择及防腐要求;
       ③粉尘及固体颗粒加快了阀门关闭件的冲剧、磨损,使密封副很快失效;
       ④在高原、沙漠及高寒地区的室外,阀门材料的低温胞变,弯曲变形等; .
       ⑤用于长距离输送管道上的油气专用阀,要求与管道同等寿命,几十年不换。所有这些都说明油气专用阀有别于普通阀门,在恶劣条件下要具有高可靠性,满足高强度和不泄漏的要求。
 

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