04-10-2018 дата публикации
Номер: US20180283561A1
Принадлежит:
This invention relates to twin seal rotary valves and Hybrid High Integrity Pressure Protection System (H-HIPPS) for critical services, the hybrid system includes a quick isolation subsystem between an overpressure zone and a normal pressure zone and a quick releasing subsystem between the overpressure zone and a lower pressure zone with quadruple redundancies for long service without repair, more particularly, the hybrid system has the novel rotary valve with at least two offsets, twin closure members, twin wedge seal seat assemblies, the valve operation mechanism is a combination of rotary movements and linear movement between close and open positions for blocking and releasing over pressurize fluids and protecting and the valves and the pipelines or the process plants from surge pressure, fire or leak at the highest level of a system reliability. 1. A fluid control system comprising:(a) A piping assembly having an inlet section and an outlet section connected with a pipe and a release section and{'b': 1', '1', '1', '2', '2', '2', '1', '1', '1', '2', '2', '2', '1', '1', '2', '2', '1', '2', '1', '1', '2', '2, '(b) A hybrid pressure control assembly has at least one pressure-isolate subsystem and at least one pressure-release control subsystem, said subsystem a valve and an actuation system, said valve has a body assembly, a closure member assembly movably disposed in said body assembly and a pair of left and right seat assemblies disposed respectively between said body assembly and said closure member assembly, said body assembly has a flow bore expanding to a left seat pocket and a right seat pocket and is defined by a X axis and a Y axis and a rotary Z axis and a center COO, said left seat pocket has two offsets SA, SB, a left off center SO, a front bore and a back bore, said right seat pocket has two offsets SA, SB, a right off center SO, a front bore and a back bore, said left seat assembly is disposed in said left seat pocket and said right seat assembly is ...
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