Control Components, Inc.

Marco Mastrovito

Flavio Tondolo

Fabio Giove

An anti-surge system capable of anticipating a surge event in a compressor for readying the actuator to quickly actuate the anti-surge valve from the closed position to the open position. The control system includes a compressor surge controller configured to transmit a signal to the valve positioner when the operating point of the valve is approaching the surge control line. The compressor surge controller may monitor an operating margin equal to the difference between the operating point and the surge control line, and when the operating margin falls below a prescribed threshold, the compressor surge controller may send a signal to the positioner. In turn, the positioner may vent some pressure from the actuator. In this way, the dead time of the anti-surge valve on the valve seat is minimized and the valve will react more promptly to an opening signal.

Dead time reducer for piston actuator

A cascade type trim for integration into control valve and having a valve stem and a valve cage which cooperate with each other to define a plurality of fluid passageway columns, each of which extend between a valve inlet and a valve outlet. Each fluid passageway column is collectively defined by a plurality of stem passageways and a plurality of cage passageways. The stem and cage passageways are brought in and out of alignment as a result of axial movement of the stem relative to the cage. In a first position, a first fluid passageway is open, while a second fluid passageway remains closed. In a second position, both the first and second fluid passageways are open, and yet in a third position, the first fluid passageway is closed and the second fluid passageway is open.

Cascade trim for control valve

In accordance with the present invention, there is provided a multi-spindle spray nozzle assembly for a steam desuperheating or attemperator device. The nozzle assembly features a nozzle holder which accommodates two small, spring-loaded nozzles, each of which is adapted to produce a spray pattern of reduced cone angle (e.g., approximately 60&#xb0;) in comparison to currently know nozzle designs. The two nozzles are positioned within the nozzle holder such that they diverge from the axis thereof as allows the spray pattern generated thereby to be effectively tilted into the flow of steam within a desuperheating device having the nozzle assembly interfaced thereto.

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Gioia del Colle, Italy

Marco Mastrovito