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1. 发明授权

US4771801A Protective cover assembly with reverse buckling disc 失效
标题翻译：带反向压平盘的防护罩组件
公开(公告)号：US4771801A
公开(公告)日：1988-09-20
申请号：US10235
申请日：1987-02-02
申请人： Joseph B. Crump , William K. Maddox
发明人： Joseph B. Crump , William K. Maddox
IPC分类号： F04B49/12 , F16K17/40
CPC分类号： F04B49/121 , Y10T137/1737
摘要： A protective cover assembly for a fluid end of a plunger-type pump or other positive displacement pump. The protective cover assembly includes a cover adapted to fit in an open end of the fluid end of the pump. The cover comprises a convex or domed center portion adapted for buckling away from a plunger of the pump when pressure in the pump exceeds a predetermined level and further comprises an outer portion. A cover retainer is engageable with the open end of the fluid end of the pump and is adapted for clamping the outer portion of the cover to the fluid end. A seal is provided between the outer portion of the cover and the fluid end. The convex center portion of the cover has a convex surface generally facing the plunger, and the convex surface is preferably hemispherical. In one embodiment, the convex center portion has a substantially constant cross-sectional thickness, and in an alternate embodiment, the convex center portion has an enlarged section adapted for affecting a pressure level required for buckling the convex portion. A method of preventing overpressure in a fluid end of a plunger-type pump using the protective cover assembly is also disclosed.
摘要翻译：一种用于柱塞式泵或其他容积式泵的流体端的保护盖组件。保护盖组件包括适于装配在泵的流体端的开口端的盖。所述盖包括凸起或圆顶中心部分，当所述泵中的压力超过预定水平并且还包括外部部分时，所述凸起或圆顶中心部分适于从所述泵的柱塞屈曲。盖保持器可与泵的流体端的开口端接合，并适于将盖的外部部分夹紧到流体端。在盖的外部部分和流体端之间设置密封件。盖的凸起中心部分具有大致面对柱塞的凸形表面，并且凸形表面优选地是半球形的。在一个实施例中，凸起的中心部分具有基本上恒定的横截面厚度，并且在替代实施例中，凸起中心部分具有适于影响使凸起部分弯曲所需的压力水平的扩大部分。还公开了一种使用保护盖组件防止柱塞式泵的流体端中的超压的方法。

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