Surge prevention device

• US 20050189022A1
• Filed: 05/03/2005
• Published: 09/01/2005
• Est. Priority Date: 08/09/1999
• Status: Active Grant

• Current Assignee: Kevin D. Kroupa, William J. Kullmann
• Original Assignee: Kevin D. Kroupa, William J. Kullmann
• Inventors: Kullmann, William J., Kroupa, Kevin D.
• Granted Patent: US 7,174,909 B2
• Time in Patent Office: Days
• US Class Current: 137/636
• CPC Class Codes: F16K 1/302 with valve member and actuator on the same side of the seat
• CPC Class Codes: F16K 1/303 with a valve member, e.g. stem or shaft, passing through the seat
• CPC Class Codes: F16K 1/52 Means for additional adjustment of the rate of flow
• CPC Class Codes: F16K 1/526 for limiting the maximum flow rate, using a second valve
• CPC Class Codes: F16K 1/54 Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
• CPC Class Codes: F17C 13/04 Arrangement or mounting of valves valves per se F16K ; snap-coupling of nipples F16L37/00
• CPC Class Codes: F17C 2201/0109 with exteriorly curved end-piece
• CPC Class Codes: F17C 2201/032 with substantially vertical main axis
• CPC Class Codes: F17C 2201/058 portable (<30 l)
• CPC Class Codes: F17C 2205/0329 manually actuated
• CPC Class Codes: F17C 2205/0338 Pressure regulators
• CPC Class Codes: F17C 2205/0385 in blocks or units
• CPC Class Codes: F17C 2205/0394 in direct contact with the pressure vessel
• CPC Class Codes: F17C 2221/011 Oxygen
• CPC Class Codes: F17C 2223/0123 gaseous, e.g. CNG, GNC
• CPC Class Codes: F17C 2223/036 Very high pressure (>80 bar)
• CPC Class Codes: F17C 2250/0626 Pressure
• CPC Class Codes: F17C 2260/021 Avoiding over pressurising
• CPC Class Codes: F17C 2265/012 by filtering
• CPC Class Codes: F17C 2270/025 Breathing
• CPC Class Codes: Y10T 137/0318 : Processes
• CPC Class Codes: Y10T 137/86944 : One valve seats against other valve [e.g., concentric valves]
• CPC Class Codes: Y10T 137/87056 : With selective motion for plural valve actuator
• CPC Class Codes: Y10T 137/87161 : With common valve operator
• CPC Class Codes: Y10T 137/87708 : With common valve operator

Abstract

A surge prevention valve may be used to prevent the formation of an initial surge of high pressure. The valve may be located, for example, between a high pressure gas cylinder and a medical pressure regulator. The valve is provided with first and second valves located within a housing and integrating a pressurization orifice. The initial opening of the valve in an axial direction enables gas to flow through the pressurization orifice at a first flow rate. The fill opening of the valve in the axial direction enables the gas to flow through the second valve at a second flow rate, which is much higher than the first flow rate. The controlled pressurization of the gas through the orifice delays the time during which the gas reaches full recompression. The valve may be further provided with a vent for venting pressurized gas away from a nominally closed top surface of the lower valve element. The valve may be also provided with a valve inlet tube extending into a gas cylinder to prevent contaminants, particles and/or impurities from entering the valve.

Claims

1. A device for handling pressurized gas, said device comprising:

a first flow path for flowing gas at a first flow rate through said device;

a second flow path for flowing gas at a second flow rate through said device, said second flow rate being greater than said first flow rate; and

a handle arranged to move in a first direction to open said first flow path and to enable opening of said second flow path, and in a second direction to open said second flow path, said second direction being different than said first direction.

2-62. -62. (canceled)