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    • 8. 发明授权
    • Seal structure and control valve using said seal structure
    • 密封结构和控制阀采用上述密封结构
    • US07988125B2
    • 2011-08-02
    • US11919240
    • 2006-04-21
    • Ryosuke ChoYoshihiro OgawaKohei Fukudome
    • Ryosuke ChoYoshihiro OgawaKohei Fukudome
    • F16K31/02
    • F16K31/0603F16J15/164F16J15/3204F16J15/3448F16K1/34F16K41/04
    • A seal structure sealing a fitted part between the guide surface of a bearing part and a shaft part to prevent a fluid from flowing in a direction from a high-pressure fluid side to a low-pressure fluid side. The seal structure comprises a seal ring storage part having a radial contact surface surrounding the shaft part which is formed on the high-pressure fluid side of the bearing part and a seal ring disposed in the seal ring storage part, allowing its side surface facing the contact surface to come into contact with the contact surface, and allowing its inner peripheral surface to be fitted to the outer peripheral surface of the shaft part. The seal ring is formed in such a relative dimension that, even if elastically deformed by the pressure of the sealed fluid, the elastically deformed expanded portion thereof is not brought into contact with the peripheral surface of the seal ring storage part.
    • 密封结构,其密封轴承部件的引导面与轴部之间的嵌合部,防止流体从高压流体侧向低压流体侧流动。 该密封结构包括密封环收纳部,该密封环收纳部具有包围形成在轴承部的高压流体侧的轴部的径向接触面和设置在密封环收容部中的密封环,使其侧面朝向 接触面与接触面接触,并且允许其内周面与轴部的外周面嵌合。 密封环形成为相对尺寸,即使被密封流体的压力弹性变形,其弹性变形扩大部分也不会与密封环收纳部的周面接触。