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Title: Means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection

Abstract

A piezoelectric valve in a gas delivery system includes a piezoceramic element bonded to a valve seal and disposed over a valve seat, and retained in position by an O-ring and a retainer; an insulating ball normally biased by a preload spring against the piezoceramic element; an inlet gas port positioned such that upon admission of inlet gas into the valve, the piezoceramic element is positively seated. The inlet gas port is located only on the side of the piezoceramic element opposite the seal.

Inventors:
 [1]
  1. Yardley, PA
Issue Date:
Research Org.:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
OSTI Identifier:
869458
Patent Number(s):
5340081
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F15 - FLUID-PRESSURE ACTUATORS F15C - FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16K - VALVES
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
means; positively; seating; piezoceramic; element; piezoelectric; valve; inlet; gas; injection; delivery; bonded; seal; disposed; seat; retained; position; o-ring; retainer; insulating; ball; normally; biased; preload; spring; positioned; admission; seated; located; opposite; piezoceramic element; valve seat; gas delivery; inlet gas; gas injection; normally bias; valve seal; piezoelectric valve; /251/

Citation Formats

Wright, Kenneth E. Means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection. United States: N. p., 1994. Web.
Wright, Kenneth E. Means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection. United States.
Wright, Kenneth E. Sat . "Means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection". United States. https://www.osti.gov/servlets/purl/869458.
@article{osti_869458,
title = {Means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection},
author = {Wright, Kenneth E},
abstractNote = {A piezoelectric valve in a gas delivery system includes a piezoceramic element bonded to a valve seal and disposed over a valve seat, and retained in position by an O-ring and a retainer; an insulating ball normally biased by a preload spring against the piezoceramic element; an inlet gas port positioned such that upon admission of inlet gas into the valve, the piezoceramic element is positively seated. The inlet gas port is located only on the side of the piezoceramic element opposite the seal.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}

Works referenced in this record:

Pre-Operational Test Results of the TFTR Neutral Beam D-T Gas Delivery System
journal, May 1992