Tube expander with force sensor

Details Tube expander with force sensor Tube expander with force sensor

1993-12-20

1998-05-19

Vo, Peter

Metal working

Means to assemble or disassemble

Heat exchanger

29 33T, 29523, 29714, 29890044, 72370, B23P 1526, B21D 3908

Patent

active

057523134

ABSTRACT:
An apparatus for expanding the tubes in a heat exchanger of the plate fin and tube type. The expander is of the type that expands the tubes by driving a "bullet" through the tube with the bullet being attached to and driven by an expander or bullet rod. The apparatus has a sensor positioned so as to be able to measure the compressive force on the expander rod. The output of the sensor is proportional to the force exerted on the rod and can be used to provide an alarm or safety shutdown of the apparatus upon the sensing of excessive force on the expander rod. The sensor output can also be used for quality and process control.

REFERENCES:
patent: 3718017 (1973-02-01), Blackburn
patent: 4228573 (1980-10-01), Barnard
patent: 4369662 (1983-01-01), Rieben et al.
patent: 4513497 (1985-04-01), Finch
patent: 4649493 (1987-03-01), Castner et al.
patent: 5033190 (1991-07-01), Gray
patent: 5040405 (1991-08-01), Honma et al.

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