Crimp sealing of tubes flush with or below a fixed surface
- Concord, CA
- Livermore, CA
An apparatus for crimp sealing and severing tubes flush or below a fixed surface. Tube crimping below a fixed surface requires an asymmetric die and anvil configuration. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. This asymmetric die and anvil is used when a ductile metal tube and valve assembly are attached to a pressure vessel which has a fixed surface around the base of the tube at the pressure vessel. A flat anvil is placed against the tube. Die guides are placed against the tube on a side opposite the anvil. A pinch-off die is inserted into the die guides against the tube. Adequate clearance for inserting the die and anvil around the tube is needed below the fixed surface. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5546783
- OSTI ID:
- 870565
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
sealing
tubes
flush
below
fixed
surface
apparatus
severing
tube
crimping
requires
asymmetric
die
anvil
configuration
flat
removed
deforming
crimped
ductile
metal
valve
assembly
attached
pressure
vessel
base
placed
guides
opposite
pinch-off
inserted
adequate
clearance
inserting
pressure vessel
valve assembly
metal tube
fixed surface
tubes flush
asymmetric die
ductile metal
crimp sealing
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