Fluid pump relief valve
    5.
    发明授权
    Fluid pump relief valve 有权
    流体泵安全阀

    公开(公告)号:US06863504B2

    公开(公告)日:2005-03-08

    申请号:US10292226

    申请日:2002-11-12

    摘要: A pump head for a fluid pump driven by a motor includes an inlet for receiving fluid at a first pressure and an outlet for outputting fluid at a second pressure greater than the first pressure. A relief valve cavity formed in the pump head housing includes a first portion in fluid communication with the inlet and a second portion in fluid communication with the outlet. A relief valve is disposed in the relief valve cavity with no portion of the relief positioned to block or otherwise impede the normal flow of fluid through the inlet or outlet. The relief valve is bi-directional and configured to operate in two modes including: (1) a low pressure relief mode where fluid flows from the inlet to the outlet when fluid pressure at the inlet exceeds fluid pressure at the outlet by a first threshold amount; and (2) a high pressure relief mode where fluid flows from the outlet to the inlet when fluid pressure at the outlet exceeds fluid pressure at the inlet by a second threshold amount greater than the first threshold amount. The relief valve cavity is specially configured to provide a barrier preventing an element of the relief valve from damaging the pump head in the event the relief valve element fails.

    摘要翻译: 用于由马达驱动的流体泵的泵头包括用于在第一压力下接收流体的入口和用于以大于第一压力的第二压力输出流体的出口。 形成在泵头壳体中的安全阀腔体包括与入口流体连通的第一部分和与出口流体连通的第二部分。 安全阀设置在安全阀腔中,没有一部分释放件被定位成阻挡或以其它方式阻碍通过入口或出口的流体的正常流动。 安全阀是双向的并且构造成以两种模式操作,包括:(1)低压释放模式,其中当入口处的流体压力超过出口处的流体压力第一阈值时,流体从入口流到出口 ; 和(2)高压释放模式,其中流体在出口处的流体压力在出口处的流体压力超过入口处的流体压力超过第一阈值量的第二阈值量时从出口流到入口。 安全阀腔体是特别设计的,以防止溢流阀元件出现故障时防止溢流阀的元件损坏泵头。