| 摘要 |
A closing system for controlling a flow with precision The closing system comprises a closing member, a carriage to translationally displace the closing member along rails which counterweight the force exerted against the closing member. A type of jack is mounted on the carriage for non-resilient axial displacements of the closing member to and from a flow opening. A damper having numerous functions, transmits the vibrations of the closing member to the carriage and ensure axial displacement of the closing member. The closing member being submitted to the damper, closes the flow opening by first axially aligning the closing member with respect to the flow opening by actuation of carriage. The jack axially displaces the closing member to urge the closing member against the flow opening, to close it without translational displacement and away a minimal distance therefrom for clearance and then the carriage is actuated to reduce or enlarge the flow opening, with precision and without friction from translational displacement on the flow opening. A method to damp while opening or closing a flow opening is also disclosed.
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