skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Differential pressure pin discharge apparatus

Abstract

Disclosed is a discharge assembly for allowing elongate pins to be discharged from an area of relatively low pressure to an area of relatively greater pressure. The discharge assembly includes a duck valve having a lip piece made of flexible material. The flexible lip piece responds to a fluctuating pressure created downstream by an aspirator. The aspirator reduces the downstream pressure sensed by the duck valve when the discharge assembly is in the open position. This allows elongate pins to be moved through the duck valve with no backflow because the aspirator pressure is less than the pressure in the low pressure area from which the pins originate. Closure of the assembly causes the aspirator static pressure to force the flexible duck valve lip piece into a tightly sealed position also preventing backflow. The discharge assembly can be easily controlled using a single control valve which blocks the flow of aspirator gas and closes the pin passageway extending through the assembly.

Inventors:
 [1]
  1. Richland, WA
Issue Date:
Research Org.:
WESTINGHOUSE HANFORD CO
OSTI Identifier:
875191
Patent Number(s):
H209
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC06-76FF02170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
differential; pressure; discharge; apparatus; disclosed; assembly; allowing; elongate; pins; discharged; relatively; duck; valve; lip; piece; flexible; material; responds; fluctuating; created; downstream; aspirator; reduces; sensed; position; allows; moved; backflow; originate; closure; causes; static; force; tightly; sealed; preventing; easily; controlled; single; control; blocks; flow; gas; closes; passageway; extending; discharge apparatus; differential pressure; control valve; static pressure; passageway extending; easily controlled; discharge assembly; flexible material; /376/277/

Citation Formats

Oakley, David J. Differential pressure pin discharge apparatus. United States: N. p., 1987. Web.
Oakley, David J. Differential pressure pin discharge apparatus. United States.
Oakley, David J. Thu . "Differential pressure pin discharge apparatus". United States. https://www.osti.gov/servlets/purl/875191.
@article{osti_875191,
title = {Differential pressure pin discharge apparatus},
author = {Oakley, David J},
abstractNote = {Disclosed is a discharge assembly for allowing elongate pins to be discharged from an area of relatively low pressure to an area of relatively greater pressure. The discharge assembly includes a duck valve having a lip piece made of flexible material. The flexible lip piece responds to a fluctuating pressure created downstream by an aspirator. The aspirator reduces the downstream pressure sensed by the duck valve when the discharge assembly is in the open position. This allows elongate pins to be moved through the duck valve with no backflow because the aspirator pressure is less than the pressure in the low pressure area from which the pins originate. Closure of the assembly causes the aspirator static pressure to force the flexible duck valve lip piece into a tightly sealed position also preventing backflow. The discharge assembly can be easily controlled using a single control valve which blocks the flow of aspirator gas and closes the pin passageway extending through the assembly.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

Save / Share: