Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Nitrogen liquid to gas converter










Image Number 6 for United States Patent #4290271.

A flameless nitrogen liquid to gas converter for providing high pressure nitrogen as to treat oil and gas wells. A diesel engine prime mover drives hydraulic pumps and motors to pressurize nitrogen and actuate an air fan. Heat for converting the liquid nitrogen to gaseous nitrogen is obtained from the engine jacket water, the engine exhaust, and the hydraulic oil from the hydraulic pumps and motors. Additional heat can be obtained from the hydraulic oil system by increasing the hydraulic system pressure with a hydraulic pressure control valve. At least one of the hydraulic pumps and its driven hydraulic motor is in a hydraulic circuit which includes variable means for increasing the pressure in the hydraulic circuit, a hydraulic oil-air heat exchanger, and a hydraulic oil reservoir. Hydraulic fluid from the other pumps and motors is transmitted through the hydraulic oil-air heat exchanger. The system includes an in-line heat exchange system in series in the air flow from upstream to downstream in the following order: hydraulic oil-air heat exchanger, engine water-heat exchanger, engine exhaust-air heat exchanger, nitrogen-air heat exchanger, and an air suction fan.








 
 
  Recently Added Patents
Method of and apparatus for evaluating an optimal irradiation amount of an electron beam for drawing a pattern onto a sample
Low-coupling oxide media (LCOM)
Method and apparatus for eliminating a motor vehicle tip-over risk
Method for manufacturing non-volatile memory device, non-volatile memory element, and non-volatile memory device
Editing device and editing method
Image forming device
Horizontal card holder
  Randomly Featured Patents
Rock drill with cutting inserts
Communicating between stations
PLL frequency synthesizer capable of changing an output frequency at a high speed
Tracked crane for large objects
Silica additive for use in rubbers and similar cross-linked materials
Combined dispersive/interference spectroscopy for producing a vector spectrum
Corrosion-resistant alloy heat transfer tubes for heat-recovery boilers
Optical recording member
High speed particle sorter using a field emission electrode
Active damping during clutch engagement for engine start