BYPASS VALVE TECHNOLOGY INTERFACE SAFETY SCREEN

摘要

A safety screen assembly includes a shroud sleeve with an upstream end that defines a flow inlet. A spring seat is disposed downstream from the shroud sleeve and includes a flow outlet. A screen spool is operatively disposed between the flow inlet and the flow outlet and includes a tubular body with an inner passage, a screen disposed within the inner passage, and a plurality of bypass passages formed in the tubular body. The tubular body is in sliding engagement with the shroud sleeve in both a first position and a second position, the shroud sleeve closing the plurality of bypass passages from fluid flow when the tubular body is in the first position, and the plurality of bypass passages being open to fluid flow when the tubular body is in the second position. A spring biases the tubular body of the screen spool toward the first position.

主权项

1. A safety screen assembly suitable for use within a fluid passage, the safety screen assembly comprising:
a shroud sleeve, the shroud sleeve comprising:
an upstream end that defines a flow inlet of the safety screen assembly; anda flange disposed at the upstream end of the shroud sleeve; a spring seat disposed downstream from the shroud sleeve, the spring seat comprising:
a first flow outlet of the safety screen assembly; a screen spool, the screen spool operatively disposed between the flange and the first flow outlet, the screen spool comprising:
a tubular body with an inner passage;a first screen disposed within the inner passage; anda bypass passage formed in the tubular body,wherein the tubular body is in sliding engagement with the shroud sleeve in both a first position and a second position, wherein in the first position the tubular body engages the flange and the shroud sleeve closes the bypass passage from fluid flow, and wherein in the second position the tubular body is moved away from the flange and towards the first flow outlet and the bypass passage is open to fluid flow; and a spring engaged between the flow inlet and the first flow outlet of the safety screen assembly, the spring biasing the tubular body of the screen spool toward the flange of the shroud sleeve.