Fluid actuator for cryogenic valve

Details Fluid actuator for cryogenic valve Fluid actuator for cryogenic valve

1982-02-23

1984-08-21

Capossela, Ronald C.

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

62513, 60520, 137340, F25B 900

Patent

active

044662513

ABSTRACT:
Valves for controlling process gas at the cold end of an expansion engine are fluid actuated. The actuating fluid is controlled by a solenoid actuated spool valve positioned at ambient temperature. The fluid is cooled in a thermally regenerative flow path extending between the solenoid actuated valve and the fluid actuated valve.

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Numatics Inc., Highland, Michigan 48031, brochure for Mark 1.TM., 1978.
Patton, G., G. Green, K. Dunn, V. Dilling, "Hydraulically Controlled Helium Expansion Engine," Advances in Cryogenic Engineering, vol. 27, 1982, pp. 641-648.
Johnson, R. W., S. C. Collins and J. L. Smith, Jr., "Hydraulically Operated Two-Phase Helium Expansion Engine," Advances in Cryogenic Engineering, vol. 16, pp. 171-177.
Kneuer, R., K. Petersen and A. Stephan, "Automatic Multi-Range Helium Liquefaction Plant," Cryogenics, Mar. 1980, pp. 129-132.
Fitch, E. C., J. B. Surjaatmadja, "Introduction to Fluid Logic," pp. 52, 133 and 58.

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