公开(公告)号：US08356972B2

公开(公告)日：2013-01-22

申请号：US12631888

申请日：2009-12-07

申请人： Bruce Howard ,  Judith Hodgson ,  Nick Tallos ,  Glenn Quinty

发明人： Bruce Howard ,  Judith Hodgson ,  Nick Tallos ,  Glenn Quinty ,  David Janocko ,  Charles Bice

IPC分类号： F16J15/00

CPC分类号： F16J15/164

摘要： A thermally actuated shutdown seal for a rotating shaft having a narrow annular fluid flow path surrounding the shaft. The seal surrounds the shaft with the annulus therebetween during normal operation and constricts against the shaft when the shaft slows or stops rotating. The annulus is maintained open during normal operation by a spacer interposed between opposing ends of a split ring. When the shaft stops rotating, the temperature of the annulus rises, which actuates removal of the spacer from the split ring constricting the split ring against the shaft blocking the annulus. The blocked annulus causes a pressure differential across the seal which urges a polymer seal ring, downstream of the split ring against the shaft which seals the annulus. In one embodiment, the spacer is formed of a meltable material. In a second embodiment, the spacer is removed from the split ring by a thermally responsive actuator.

摘要翻译： 用于旋转轴的热致动关闭密封件，其具有围绕轴的窄的环形流体流动路径。 密封件在正常操作期间围绕轴与环之间环绕，并且当轴减慢或停止转动时，密封件抵靠轴。 在正常操作期间，环形件通过分隔环的相对端之间的间隔件保持打开。 当轴停止旋转时，环形空间的温度升高，这促使间隔件从开口环移除，从而将分隔环压靠在阻挡环形空间的轴上。 堵塞的环带导致跨越密封件的压力差，该压力差促使聚合物密封环在分离环的下游抵靠密封环的轴。 在一个实施例中，间隔件由可熔融材料形成。 在第二实施例中，通过热响应致动器将间隔件从开口环移除。

公开(公告)号：US20100150715A1

公开(公告)日：2010-06-17

申请号：US12631888

申请日：2009-12-07

申请人： Bruce Howard ,  Judith Hodgson ,  Nick Tallos ,  Glenn Quinty ,  David Janocko ,  Charles Bice

发明人： Bruce Howard ,  Judith Hodgson ,  Nick Tallos ,  Glenn Quinty ,  David Janocko ,  Charles Bice

IPC分类号： F04D29/10 ,  F16J15/06 ,  F16J15/54

CPC分类号： F16J15/164

摘要： A thermally actuated shutdown seal for a rotating shaft having a narrow annular fluid flow path surrounding the shaft. The seal surrounds the shaft with the annulus therebetween during normal operation and constricts against the shaft when the shaft slows or stops rotating. The annulus is maintained open during normal operation by a spacer interposed between opposing ends of a split ring. When the shaft stops rotating, the temperature of the annulus rises, which actuates removal of the spacer from the split ring constricting the split ring against the shaft blocking the annulus. The blocked annulus causes a pressure differential across the seal which urges a polymer seal ring, downstream of the split ring against the shaft which seals the annulus. In one embodiment, the spacer is formed of a meltable material. In a second embodiment, the spacer is removed from the split ring by a thermally responsive actuator.

摘要翻译： 用于旋转轴的热致动关闭密封件，其具有围绕轴的窄的环形流体流动路径。 密封件在正常操作期间围绕轴与环之间环绕，并且当轴减慢或停止转动时，密封件抵靠轴。 在正常操作期间，环形件通过分隔环的相对端之间的间隔件保持打开。 当轴停止旋转时，环形空间的温度升高，这促使间隔件从分开的环中移除，从而将分隔环限制在阻挡环的轴上。 堵塞的环带导致跨越密封件的压力差，该压力差促使聚合物密封环在分离环的下游抵靠密封环的轴。 在一个实施例中，间隔件由可熔融材料形成。 在第二实施例中，通过热响应致动器将间隔件从开口环移除。