阀门井是地下管线及地下管道(如自来水、油、天然气管道等)的阀门为了在需要进行开启和关闭部分管网操作或者检修作业时方便,就设置类似小房间的一个坑(或井),将阀门等安装布置在这个坑里,便于定期检查、清洁和疏通管道,防止管道堵塞的枢纽。这个坑就叫阀门井。有阀门井必定有阀门,但有阀门不一定有阀门井。
用活动金属挡板及水封井附加控制阀门封闭油罐组排水沟的方法既不可靠又会使流淌火面积扩大。
The method using movable metal baffle and control valve near water sealed well to block the drain of oil tank group is unreliable and it will widen flowing fire area.
由于不用压井就能更换阀门,还不会对油井含油地层造成破坏,从而更好地保护了油气层。
As the valve can be replaced with pressure balance and the oil layer of the oil well can not be damaged, the oil and gas layer is better protected.
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