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1.发明授权Method and apparatus for retaining a soft seal in an integrated flapper mount, hard seat, spring housing surface controlled subsurface safety valve 有权用于在一体式挡板安装座，硬座，弹簧壳体表面控制的地下安全阀中保持软密封的方法和装置公开(公告)号：US07841416B2
公开(公告)日：2010-11-30
申请号：US11894356
申请日：2007-08-21
IPC分类号： E21B34/14
CPC分类号： E21B34/06 , E21B34/10 , E21B2034/005
摘要： Presented is a subsurface safety valve in which the flapper mount, hard seat and spring housing have been integrated into a single assembly. To accommodate a “soft seat insert,” a special retainer soft seat ring and soft seat seal are provided. The soft seat seal fits over a conical protruding surface (hard seat) that surrounds the main bore of the safety valve on the bottom side of the spring housing. The retainer ring fits over the soft seat seal and holds it in place against the conical surface. Notches along the perimeter of an upper flanged end of the soft seat seal prevent gases, such as nitrogen, from becoming trapped behind the seal and potentially damaging it during a rapid decompression event. A gap between the upper flanged end of the soft seat seal and the lower spring housing allow the seal to move up and down the conical protruding surface as the flapper opens and closes, reducing compression of the seal and the risk of a compression set due to repeated opening and closing of the flapper.
摘要翻译： 提出了一种地下安全阀，其中挡板安装座，硬座和弹簧壳体已经集成到单个组件中。 为了容纳“软座插件”，提供了特殊的保持器软座圈和软座密封。 软座密封件安装在围绕弹簧壳体底部的安全阀的主孔的锥形突出表面（硬座）上。 保持环安装在软座密封件上，并将其固定在锥形表面上。 沿着软座密封件的上法兰端的周边的凹口防止气体（例如氮气）被困在密封件后面并在快速减压事件期间潜在地损坏密封件。 软座密封件的上法兰端和下弹簧壳体之间的间隙允许密封件在挡板打开和关闭时沿锥形突出表面上下移动，减少密封件的压缩和由于 反复打开和关闭挡板。
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2.发明申请Method and apparatus for retaining a soft seal in an integrated flapper mount, hard seat, spring housing surface controlled subsurface safety valve 有权用于在一体式挡板安装座，硬座，弹簧壳体表面控制的地下安全阀中保持软密封的方法和装置公开(公告)号：US20080047713A1
公开(公告)日：2008-02-28
申请号：US11894356
申请日：2007-08-21
CPC分类号： E21B34/06 , E21B34/10 , E21B2034/005
摘要： Presented is a subsurface safety valve in which the flapper mount, hard seat and spring housing have been integrated into a single assembly. To accommodate a “soft seat insert,” a special retainer soft seat ring and soft seat seal are provided. The soft seat seal fits over a conical protruding surface (hard seat) that surrounds the main bore of the safety valve on the bottom side of the spring housing. The retainer ring fits over the soft seat seal and holds it in place against the conical surface. Notches along the perimeter of an upper flanged end of the soft seat seal prevent gases, such as nitrogen, from becoming trapped behind the seal and potentially damaging it during a rapid decompression event. A gap between the upper flanged end of the soft seat seal and the lower spring housing allow the seal to move up and down the conical protruding surface as the flapper opens and closes, reducing compression of the seal and the risk of a compression set due to repeated opening and closing of the flapper.
摘要翻译： 提出了一种地下安全阀，其中挡板安装座，硬座和弹簧壳体已经集成到单个组件中。 为了容纳“软座插件”，提供了特殊的保持器软座圈和软座密封。 软座密封件安装在围绕弹簧壳体底部的安全阀的主孔的锥形突出表面（硬座）上。 保持环安装在软座密封件上，并将其固定在锥形表面上。 沿着软座密封件的上法兰端的周边的凹口防止气体（例如氮气）被困在密封件后面并在快速减压事件期间潜在地损坏密封件。 软座密封件的上法兰端和下弹簧壳体之间的间隙允许密封件在挡板打开和关闭时沿锥形突出表面上下移动，减少密封件的压缩和由于 反复打开和关闭挡板。
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