TEFLON BELLOWS PULSE GENERATORS FOR SOLVENT EXTRACTION PULSE COLUMNS
A Teflon bellows-type pulse generator is described which consists of two 3-in. nominal diameter Teflon bellows mounted on either end of a flanged spool piece and rigidly connected internally by a push rod so that the two of bellows move in tandem. The ends of the two bellows are closed by means of blind flanges. Tne spool piece is designed for insertion in a 6-in. diameter nozzle on a solvent extraction pulse column. The double bellows arrangement constitutes a safety feature to prevent loss of the column contents in the event of failure of the inner bellows in contact with column solution. Failure of the inner bellows may be detected by a conductivity probe mounted in the air space inside of the double bellows assembly. Reciprocating motion is imcrank arm rigidly connected through a cross head and push rod to the face of the external bellows flange. The push rod is guided by means of linear ball bushings. Frequency variation over a range of 30 to 100 cycles/ min.was obtained by use of a Thymotrol-controlled electric motor to drive the crank arm. Variable stroke adjustment (0 to 1-in. range) was possible by adjustment of linkages on the crank arm. A load compensating spring was founnd desirable to counteract the thrust on the push rod resulting tom the static pressure at the bottom of the solvent extraction column. Without the spring, accelerated wear of the bearing on the crank arm occured. The pulse generator operated uneventfully for 1776 hours (6.61x lO/sup 6/ cycles) at a frequency of 62 cycles/min. and a bellows travel of l-in. (equivalent to a displacement of 1.6 in. in a 3-in. diam. column). (auth)
- Research Organization:
- General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
- DOE Contract Number:
- W-31-109-ENG-52
- NSA Number:
- NSA-13-010979
- OSTI ID:
- 4254136
- Report Number(s):
- HW-30588
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHEMISTRY
CONFIGURATION
CONTROL
DETECTION
ELECTRIC CONDUCTIVITY
ELECTRICITY
EXTRACTION COLUMNS
FAILURES
FREQUENCY
LABORATORY EQUIPMENT
LOSSES
MACHINE PARTS
MECHANICAL STRUCTURES
MOTION
MOTORS
NOZZLES
ORGANIC FLUORINE COMPOUNDS
PLANNING
POLYMERS
PRESSURE
PULSE COLUMNS
PULSE GENERATORS
PULSES
RODS
SAFETY
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPRINGS
TEFLON
VARIATIONS
VELOCITY
WEAR
WIND