Gas Metering Pumps
Gas Metering Pumps
(OP)
Gas Metering Pumps - are there such things ?
We have an application that requires 2 combustible gases (fuel gas and Oxygen)to be mixed in-line and then filled into a chamber where the mix is ignited. Not only should the volume ratio be accurately controlled but also the degree of mixing.
We currently use pre-charge chambers, which we fill to a set pressure and discharge simultaneously - these work fine but a little on the slow side.
I was thinking that in-line metering devices like Gear Pumps could also work. Anyone know of any?
We have also tried fixed orifices but results were poor.
We have an application that requires 2 combustible gases (fuel gas and Oxygen)to be mixed in-line and then filled into a chamber where the mix is ignited. Not only should the volume ratio be accurately controlled but also the degree of mixing.
We currently use pre-charge chambers, which we fill to a set pressure and discharge simultaneously - these work fine but a little on the slow side.
I was thinking that in-line metering devices like Gear Pumps could also work. Anyone know of any?
We have also tried fixed orifices but results were poor.





RE: Gas Metering Pumps
-handleman, CSWP (The new, easy test)
RE: Gas Metering Pumps
Normally this is done with a series of pressure regulators that put the right partial pressure of the two streams together just before the combustion chamber. This seems to allow pretty precise control in millions of engines.
David
RE: Gas Metering Pumps
Upstream pressure to the supply regulators may also fluctuate. Flow is also only on for only a few secs.
RE: Gas Metering Pumps