Differential pressure pin discharge apparatus

Patent · Thu Jan 01 00:00:00 EST 1987

OSTI ID:875191

Oakley, David J. ^[1]

---

1. Richland, WA

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.

• Research Organization: Westinghouse Hanford Co., Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC06-76FF02170
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): H000209
• Application Number: 06/615432
• OSTI ID: 875191
• Resource Relation: Patent File Date: 1984 May 30
• Country of Publication: United States
• Language: English

Related Subjects

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
statutory invention registration
/376/277/