Valve system incorporating single failure protection logic

Ryan, Rodger; Timmerman, Walter J. H.

Title: Valve system incorporating single failure protection logic

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Abstract

A valve system incorporating single failure protective logic. The system consists of a valve combination or composite valve which allows actuation or de-actuation of a device such as a hydraulic cylinder or other mechanism, integral with or separate from the valve assembly, by means of three independent input signals combined in a function commonly known as two-out-of-three logic. Using the input signals as independent and redundant actuation/de-actuation signals, a single signal failure, or failure of the corresponding valve or valve set, will neither prevent the desired action, nor cause the undesired action of the mechanism.

Inventors:

Ryan, Rodger ^[1]; Timmerman, Walter J. H. ^[2]

San Jose, CA
Saratoga, CA

Issue Date:: 1980-01-01

OSTI Identifier:: 863489

Patent Number(s):: 4184514

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

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Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E30/30 - Nuclear fission reactors

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T137/877 - With flow control means for branched passages
Y10T137/87893 - With fluid actuator

G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
G21C7/12 - Means for moving control elements to desired position

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DOE Contract Number:: E(11-1)-2395

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: valve; incorporating; single; failure; protection; logic; protective; consists; combination; composite; allows; actuation; de-actuation; device; hydraulic; cylinder; mechanism; integral; separate; assembly; means; independent; input; signals; combined; function; commonly; two-out-of-three; redundant; signal; corresponding; set; neither; prevent; desired; action; nor; undesired; input signals; input signal; valve assembly; single failure; hydraulic cylinder; incorporating single; /137/91/376/976/

Citation Formats


                    Ryan, Rodger, and Timmerman, Walter J. H. Valve system incorporating single failure protection logic.  United States: N. p., 1980. 
        Web.

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                    Ryan, Rodger, & Timmerman, Walter J. H. Valve system incorporating single failure protection logic.  United States.

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                    Ryan, Rodger, and Timmerman, Walter J. H. Tue .  
        "Valve system incorporating single failure protection logic".  United States.  https://www.osti.gov/servlets/purl/863489.

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@article{osti_863489,

  title        = {Valve system incorporating single failure protection logic},

  author       = {Ryan, Rodger and Timmerman, Walter J. H.},

  abstractNote = {A valve system incorporating single failure protective logic. The system consists of a valve combination or composite valve which allows actuation or de-actuation of a device such as a hydraulic cylinder or other mechanism, integral with or separate from the valve assembly, by means of three independent input signals combined in a function commonly known as two-out-of-three logic. Using the input signals as independent and redundant actuation/de-actuation signals, a single signal failure, or failure of the corresponding valve or valve set, will neither prevent the desired action, nor cause the undesired action of the mechanism.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1980},

  month        = {1}

}

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