Emerson Process Management Power & Water Solutions, Inc.

Richard Peter Natili, Jr

Thomas Sweeney

Steven Paul Sinka

Matthew E Wolfe

An isolating manifold fluidly connected between a hydraulic valve and a hydraulic manifold operates to automatically isolate the valve from the hydraulic manifold as the valve is removed from the manifold, without requiring any particular blocking and bleeding procedures to be implemented on the valve or the manifold prior to the removal process. The isolating manifold includes an adaptor removably mounted onto a base with various pressure, control and tank fluid channels disposed in alignment through the adaptor and base portions to allow fluid to flow through each of the channels between the hydraulic manifold and the valve. During operation, the valve is mounted onto the adaptor while the base is mounted onto the hydraulic manifold. The valve may be removed from the hydraulic manifold by removing the adaptor from the base, during which process, the isolating manifold operates automatically to block the pressure and control ports of the hydraulic manifold and to bleed pressurized fluid from the pressure and control channels of the valve to a tank channel so as to automatically isolate the valve from the hydraulic manifold as the valve is removed from the hydraulic manifold.

Hydraulic isolating manifold

Methods and apparatus for adjusting a spring load in an actuator are described. An example actuator includes a housing and a plate. Further, the example actuator includes one or more springs disposed in the housing to apply a force to the plate. Additionally, the example actuator includes a spring load adjuster having a collar extending through and movably engaged to the plate to enable an adjustment of the position of the collar relative to the plate to change a load provided by the one or more springs.

Methods and apparatus for adjusting a spring load in an actuator

A tripping control system for use with, for example, turbines, includes a block circuit having two or more redundant blocking valves disposed or connected in series within a pressure supply line to block the supply of hydraulic fluid within the pressure supply line and a bleed circuit having two or more bleed valves connected in parallel between the pressure supply line and a return or dump line to bleed to the hydraulic fluid from the pressure supply line. The blocking valves and the bleed valves are actuated by one or more control valves under the control of a process or safety controller which trips the turbine by first performing a bleed function using the bleed valves, which then causes the block function to automatically actuate. Pressure sensors disposed at various locations in the tripping control system provide feedback to the controller to enable the controller to test each of the block and bleed valves individually, during operation of the turbine, without causing an actual trip of the turbine. The tripping control system thereby provides reliable trip operation during a trip by providing redundant block and bleed functionality in combination with enabling the individual components of the block and bleed circuits to be tested while the turbine is online and operating but without preventing the turbine from being tripped, if necessary, during the test.

Electronically controllable and testable turbine trip system

A trip manifold assembly is disclosed which includes a manifold body connected to a header shaft. The header shaft passes through a plurality of rotary valves. Each rotary valve is connected to a pressure transmitter. The header shaft comprises two passages including a transmitter input passage and a drain passage. The rotary valves each comprise a through passage. A manifold body provides fluid communication between an input source and the transmitter input passage of the header shaft. The manifold also provides communication between the drain passage of the header shaft and a drain vent. The rotary valves are each independently rotatable between two positions including a transmit position where the through passage of each valve provides communication between the transmitter input passage of the header shaft and their respective pressure transmitters. Each rotary valve is also independent rotatable to a drain position where the through passage of each valve is in communication with the drain passage of the header shaft. Multiple header shafts may be provided in a single manifold assembly and each header shaft can handle more than one input that needs to be monitored.

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Cecil, PA, United States of America

Richard Peter Natili, Jr