Valves and valve actuation – With selective flow regulation – Rotary
Patent
1992-08-03
1994-12-06
Rosenthal, Arnold
Valves and valve actuation
With selective flow regulation
Rotary
251297, 181265, F16K 332, F01N 708
Patent
active
053703588
ABSTRACT:
A device for restricting flow of fluids and reducing noise that minimizes filling losses and muffles the vent noise, for example, while gravity filling cryogenic cylinders from a storage tank. The filling loss reducer part of this device is comprised of valve body, rotor, valve seat, o-ring, springs, and ball bearings. The noise muffler is comprised of a cylinder with tubes inside it. The loss reducer and muffler are assembled together to form the device. In operation, when filling cryogenic cylinders, for example, the device is screwed on to the vent valve of the cryogenic cylinder being filled. During the fill process, vent gases from the cryogenic cylinder pass through an orifice in the device. The size of the orifice can be changed to any one of the multiple discrete sizes by manually turning the rotor. This manipulation of the orifice size changes the pressure difference between the storage tank and the cryogenic cylinder. In this example, the filling losses are substantially reduced when approximately 15 psig pressure difference is maintained between the storage tank and the cryogenic cylinder.
REFERENCES:
patent: 1514441 (1924-11-01), Culp
patent: 1751591 (1930-03-01), McCloskey
patent: 2968474 (1961-01-01), Eichelman et al.
patent: 2999512 (1961-09-01), Barkow
patent: 4122914 (1978-10-01), Suyama
patent: 4366947 (1983-01-01), Voege
Hunter Donald W.
Pint Kenneth R.
Rosenthal Arnold
Technical Manufacturing Products, Inc.
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