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公开(公告)号:US20060191679A1
公开(公告)日:2006-08-31
申请号:US11201056
申请日:2005-08-09
IPC分类号: E21B33/06
CPC分类号: E21B21/106 , E21B2034/002 , F16K5/0605 , F16K5/0657 , Y10T137/7036 , Y10T137/87917
摘要: A triple-valve internal blow out preventer having unitary construction is provided, each valve including a tubular assembly having a central passageway with upper and lower seats mounted therein. A ball is rotatably received between the upper and lower seats and includes an external surface and a central opening, wherein the central opening may include an undercut. A protective coating may also be applied to both the external surface and the undercut of the ball to increase the durability of each of the valves.
摘要翻译: 提供具有单一结构的三阀内部防喷器,每个阀包括管状组件,其具有安装在其中的上部和下部座的中心通道。 球可旋转地容纳在上座椅和下座椅之间,并且包括外表面和中心开口,其中中心开口可包括底切。 还可以将保护涂层施加到球的外表面和底切上,以增加每个阀的耐久性。
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公开(公告)号:US20050081918A1
公开(公告)日:2005-04-21
申请号:US10971468
申请日:2004-10-21
CPC分类号: F16K5/0605 , E21B21/106 , E21B2034/002 , F16K5/0657 , Y10T137/7036 , Y10T137/87917
摘要: An internal blow out preventer is provided that includes a ball valve including a tubular assembly having a central passageway with upper and lower seats mounted therein. A ball is rotatably received between the upper and lower seats and includes an external surface and a central opening, wherein the central opening includes an undercut. A protective coating is applied to both the external surface and the undercut of the ball.
摘要翻译: 提供了一种内部防喷器,其包括球阀,该球阀包括具有安装在其中的上部和下部座的中心通道的管状组件。 球可旋转地容纳在上座椅和下座椅之间,并且包括外表面和中心开口,其中中心开口包括底切。 保护涂层施加到球的外表面和底切。
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