Seismic snubber accommodating variable gaps in pressure vessels

Details Seismic snubber accommodating variable gaps in pressure vessels Seismic snubber accommodating variable gaps in pressure vessels

1984-10-19

1986-04-22

Jordan, Charles T.

Heat exchange

Expansion and contraction relieving or absorbing means

Relieving or absorbing means supports temperature modifier...

165 81, 376285, F28F 700, G21C 900

Patent

active

045835845

ABSTRACT:
A plunger element which slides axially in a bore in a dashpot element secured to the internals of a steam generator is biased against the shell of the pressure vessel by a series of Belleville springs. The plunger and dashpot element form a chamber having a volume which varies as the width of the gap between the pressure vessel shell and internals changes due to differential thermal expansion, and pressure expansion of the shell. A collapsible reservoir provides an incompressible fluid to the variable volume chamber under urging of the ambient pressure in the pressure vessel through a metering passageway to maintain the chamber full of fluid. The metering passageways are sized relative to the viscosity of the fluid such that fluid seeps between the reservoir and variable volume chamber as the gap width varies in response to thermal and pressure changes, but an inconsequential amount of fluid flows through the passageways in response to seismic shock loading and therefore, seismic forces are transmitted through the resulting rigid connection between the shell and the internals.

REFERENCES:
patent: 2919883 (1960-01-01), Murphy
patent: 3438430 (1969-04-01), Kestemont
patent: 3771499 (1973-11-01), Marroni, Jr. et al.
patent: 3819060 (1974-06-01), Kendall et al.
patent: 3947007 (1976-03-01), Pelat
patent: 4029178 (1977-06-01), Tschift
patent: 4102522 (1978-07-01), Munz
patent: 4173512 (1979-11-01), Meier et al.
patent: 4381735 (1983-05-01), Brunner
Elevation View of Current Tube Support Plate Radial Support Scheme: R. Wepfer, 4/3/84.

Affiliated with

Also associated with

Rating

Seismic snubber accommodating variable gaps in pressure vessels does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Seismic snubber accommodating variable gaps in pressure vessels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seismic snubber accommodating variable gaps in pressure vessels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1910598