Method and apparatus for dynamically determining vapor pressure in pumping systems
AssigneeITT Manufacturing Enterprises, Inc.
InventorsEugene P. Sabini, Oakley Henyan
Life of this patent
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Abstract
A method and system for dynamically determining a vapor pressure of a fluid passing through a pumping system by diverting a portion of the fluid from the pumping system into a chamber, isolating the diverted fluid from the pumping system, evacuating the chamber and measuring the vapor pressure of the isolated fluid. In another aspect of the invention, a temperature compensation device is included in the chamber to alter the chamber fluid temperature to insure that the chamber fluid temperature is substantially the same as the fluid in the pumping system.
Claims12
A pressure measurement device in fluid communication with a pumping system for dynamically determining a vapor pressure of a fluid passing through said pumping system, comprising:
- valves for diverting a portion of said fluid from said pumping system into a chamber, the valves isolating said diverted fluid in the chamber from said pumping system so as to form an isolated fluid for measuring;
- an evacuation pump to evacuate said chamber after an evacuation valve is open;
- and
- a pressure gauge to measure said vapor pressure of said isolated fluid in the chamber after said evacuation valve is open.
A vapor pressure measurement device for a pump comprising:
- a pump chamber having a feed conduit and a return conduit;
- a valves in each of said feed conduit and said return conduit, said valve operable to divert fluid from a pump to said device when each of said valves is in a first position and isolate said diverted fluid from said pump when each of said valves is in a second position;
- an evacuation pump in fluid communication with said chamber, said evacuation pump operable to evacuate vapor from said chamber;
- an evacuation between said chamber and said evacuation pump operable to isolate said chamber from said evacuation pump when said evacuation valve is in a first position;
- a pressure gauge to measure said evacuation valve pressure when said evacuation valve is in a second position.
A vapor pressure measurement system for dynamically measuring vapor pressure in a pumping system comprising:
- a controllable measurement device comprised of
- a chamber coupled by a plurality of valves operative to divert fluid from said pumping system and measure said vapor pressure of an isolated pumped fluid in the chamber while said pumping system is operating,
- an evacuation pump to evacuate said chamber after an evacuation valve is open, and
- a pressure gauge to measure said vapor pressure of said isolated fluid in the chamber after said evacuation valve is open;
- and
- a controller coupled to said controllable measurement device operative to control operation of said controllable measurement device.
Dependencies are inferred from the claim text.