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    • 7. 发明授权
    • Pressure regulating devices
    • 调压装置
    • US4693540A
    • 1987-09-15
    • US588807
    • 1984-03-12
    • Michael R. Cane
    • Michael R. Cane
    • E21B17/02H01R13/52
    • E21B17/028
    • A pressure regulating device for fluidtight, fluid-filled apparatus comprises a solid body with a shallow recess in a surface enclosed by a flexible diaphragm. A narrow passage, preferably of capillary dimensions, connects the recess to the interior of the apparatus and the diaphragm is flexible enough to be deformed without injury so as to enter the recess and reduce its volume substantially and preferably practically to zero. The recess contains a volume of air which for optimum performance should be equal to the amount by which the volume can be reduced by movement of the diaphragm and also equal to the volume expansion of the fluid (or if more than one device is fitted its share of the fluid) from atmospheric conditions to mean working temperature (less the volume of any air occluded elsewhere in the apparatus). By this means, the diaphragm is substantially unstressed both under atmospheric conditions and under mean working conditions, since the gas will be compressed to a negligible volume.
    • 用于流体密封的流体填充装置的压力调节装置包括在由柔性隔膜包围的表面中具有浅凹部的固体。 狭窄的通道,优选毛细管尺寸,将凹槽连接到设备的内部,并且隔膜具有足够的柔性以便在没有损伤的情况下变形,从而进入凹部并且基本上并且优选地实际上减小到零。 凹部包含一定体积的空气,其最佳性能应等于​​通过隔膜的移动可以减小体积的量,并且等于流体的体积膨胀量(或如果多于一个的装置配合其分配 的流体)从大气条件到平均工作温度(减少装置中其他地方封闭的任何空气的体积)。 通过这种方式,隔膜在大气条件下和平均工作条件下基本上都不受应力,因为气体将被压缩到可忽略的体积。