Tank blanketing valve
    1.
    发明授权
    Tank blanketing valve 失效
    罐盖排气阀

    公开(公告)号:US5660204A

    公开(公告)日:1997-08-26

    申请号:US517242

    申请日:1995-08-21

    IPC分类号: F16K17/10 F17C13/04 G05D16/10

    摘要: An improved valve is provided for blanketing and maintaining the vapor space of a tank with inert gas at a set pressure. The valve is of the type that incorporates a pilot valve that operates in response to sensed tank vapor space gas pressure. The opening and closing of the pilot valve controls the opening and closing of an associated main valve which admits pressurized inert gas into the tank from an inert gas supply to maintain the tank set pressure. The valve permits one to externally adjust internal components of the pilot valve after valve assembly. Also, the valve provides for pressure balanced operation that achieves a consistent opening pressure over the allowable range of inlet gas supply pressures.

    摘要翻译: 提供了一种改进的阀,用于覆盖和保持具有设定压力的惰性气体的罐的蒸气空间。 该阀是结合有先导阀的类型,该先导阀响应于检测到的罐蒸汽空间气体压力而工作。 先导阀的打开和关闭控制相关联的主阀的打开和关闭,该主阀从惰性气体供应装置将加压的惰性气体引入罐中以维持罐的设定压力。 阀门组装后,阀门可以从外部调节先导阀的内部部件。 此外,阀提供压力平衡操作,其在允许的入口气体供应压力范围内实现一致的打开压力。