| 摘要 |
Internal and external metal-to-metal radially interfering seals are provided for an annular chamber. Typically, and annular chamber is used in tubular goods to be part of the hydraulic control circuitry, such as for operating subsurface equipment such as a subsurface safety valve. Resilient seals are eliminated and sealing reliability is enhanced by a design which features metal-to-metal seals internally and externally, preferably assembled by an external two-step thread. The radial interference seal, which is internally disposed, is constructed so as to be incapable if experiencing tensile loads. This reinforces joint integrity by minimizing stresses on thin components. <IMAGE> |
