Step opening gas valve
    3.
    发明授权
    Step opening gas valve 失效
    一步打开气阀

    公开(公告)号:US4009861A

    公开(公告)日:1977-03-01

    申请号:US655050

    申请日:1976-02-04

    申请人: Paul A. Hirst

    发明人: Paul A. Hirst

    IPC分类号: F23N5/10 F16K17/10 F16K31/145

    摘要: A combination gas valve in which means associated with the main diaphragm valve is provided for opening the valve in a stepped manner. The combination valve includes an electromagnetic operator which controls the pressure differential across the main diaphragm valve so as to open and close it. The main valve seat surrounds a concentrically located recessed secondary valve seat. Slidably located on a stem extending from the main diaphragm valve, a secondary valve plate having a plurality of orifices therein is adapted to mate with the secondary valve seat so that initial opening of the main valve allows flow only through the orifices in the secondary valve and further opening of the main valve disengages the secondary valve from its seat, thus allowing full flow. On full flow conditions, a servo regulator provides a regulated output.

    摘要翻译: 一种组合式气阀,其中提供与主隔膜阀相关联的装置,用于以阶梯式方式打开阀。 组合阀包括电磁操作器,其控制主隔膜阀两端的压力差以便打开和关闭。 主阀座围绕同心位置的二次阀座。 可滑动地位于从主隔膜阀延伸的杆上,其中具有多个孔的次阀板适于与次阀座配合,使得主阀的初始打开允许仅流过次阀中的孔, 主阀的进一步打开使二次阀从阀座脱离,从而允许完全流动。 在全流量条件下,伺服调节器提供稳压输出。