Adjustable expandable cryogenic piston and ring

Mazur, Peter O; Pallaver, Carl B

Title: Adjustable expandable cryogenic piston and ring

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Abstract

The operation of a reciprocating expansion engine for cryogenic refrigeration is improved by changing the pistons and rings so that the piston can be operated from outside the engine to vary the groove in which the piston ring is located. This causes the ring, which is of a flexible material, to be squeezed so that its contact with the wall is subject to external control. This control may be made manually or it may be made automatically in response to instruments that sense the amount of blow-by of the cryogenic fluid and adjust for an optimum blow-by.

Inventors:

Mazur, Peter O ^[1]; Pallaver, Carl B ^[2]

Aurora, IL
Woodridge, IL

Issue Date:: 1980-01-01

Research Org.:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

OSTI Identifier:: 863674

Patent Number(s):: 4226169

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

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS

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F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {
F16J15/185 - {with continuous adjustment of the compression of the packing}

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
F25B2400/141 - the extracted power is not recycled back in the refrigerant circuit
F25B9/06 - using expanders

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DOE Contract Number:: EY-76-C-02-3000

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: adjustable; expandable; cryogenic; piston; operation; reciprocating; expansion; engine; refrigeration; improved; changing; pistons; rings; operated; outside; vary; groove; located; causes; flexible; material; squeezed; contact; wall; subject; external; control; manually; automatically; response; instruments; sense; amount; blow-by; fluid; adjust; optimum; cryogenic fluid; external control; expansion engine; flexible material; cryogenic refrigeration; /92/

Citation Formats


                    Mazur, Peter O, and Pallaver, Carl B. Adjustable expandable cryogenic piston and ring.  United States: N. p., 1980. 
        Web.

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                    Mazur, Peter O, & Pallaver, Carl B. Adjustable expandable cryogenic piston and ring.  United States.

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                    Mazur, Peter O, and Pallaver, Carl B. Tue .  
        "Adjustable expandable cryogenic piston and ring".  United States.  https://www.osti.gov/servlets/purl/863674.

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@article{osti_863674,

  title        = {Adjustable expandable cryogenic piston and ring},

  author       = {Mazur, Peter O and Pallaver, Carl B},

  abstractNote = {The operation of a reciprocating expansion engine for cryogenic refrigeration is improved by changing the pistons and rings so that the piston can be operated from outside the engine to vary the groove in which the piston ring is located. This causes the ring, which is of a flexible material, to be squeezed so that its contact with the wall is subject to external control. This control may be made manually or it may be made automatically in response to instruments that sense the amount of blow-by of the cryogenic fluid and adjust for an optimum blow-by.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1980},

  month        = {1}

}

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