Valve and dash-pot assembly

Title: Valve and dash-pot assembly

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Abstract

A dash-pot valve comprising a cylinder submerged in the fluid of a housing and having a piston attached to a plunger projecting into the path of closing movement of a pivotal valve member. A vortex chamber in said cylinder is provided with tangentially directed inlets to generate vortex flow upon retraction of said plunger and effect increasing resistance against said piston to progressively retard the closing rate of said valve member toward its seat.

Inventors:

Chang, Shih-Chih ^[1]

Richland, WA

Issue Date:: 1986-01-01

Research Org.:: WESTINGHOUSE HANFORD CO

OSTI Identifier:: 865931

Patent Number(s):: 4601309

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

Patent Classifications (CPCs):: Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16K - VALVES

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Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T137/2087 - Means to cause rotational flow of fluid [e.g., vortex generator]

F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16K - VALVES
F16K47/00 - Means in valves for absorbing fluid energy {, e.g. cushioning of opening or closure movement, eliminating of vibrations of the valve member}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T137/785 - With retarder or dashpot

F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16K - VALVES
F16K15/03 - with a hinged closure member

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DOE Contract Number:: AC06-76FF02170

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: valve; dash-pot; assembly; comprising; cylinder; submerged; fluid; housing; piston; attached; plunger; projecting; path; closing; movement; pivotal; vortex; chamber; provided; tangentially; directed; inlets; generate; flow; retraction; effect; increasing; resistance; progressively; retard; rate; seat; vortex flow; piston attached; closing movement; closing rate; /137/188/

Citation Formats


                    Chang, Shih-Chih. Valve and dash-pot assembly.  United States: N. p., 1986. 
        Web.

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                    Chang, Shih-Chih. Valve and dash-pot assembly.  United States.

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                    Chang, Shih-Chih. Wed .  
        "Valve and dash-pot assembly".  United States.  https://www.osti.gov/servlets/purl/865931.

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@article{osti_865931,

  title        = {Valve and dash-pot assembly},

  author       = {Chang, Shih-Chih},

  abstractNote = {A dash-pot valve comprising a cylinder submerged in the fluid of a housing and having a piston attached to a plunger projecting into the path of closing movement of a pivotal valve member. A vortex chamber in said cylinder is provided with tangentially directed inlets to generate vortex flow upon retraction of said plunger and effect increasing resistance against said piston to progressively retard the closing rate of said valve member toward its seat.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1986},

  month        = {1}

}

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