Water ring vacuum pump how to realize the gas migration -

water ring vacuum pump in the gas often move from one place to another place. The gases in use process in vacuum water pump can move, so that we can balance the air pressure, pump remain in a stable condition. But also to the use of other functions. Water ring vacuum pump how to realize the gas migration?

a. Gas diffusion

due to the concentration gradient in another medium motion is called diffusion. Medium can be another gas, in this case, or can be condensed matter diffusion is called diffusion. When using water ring vacuum pump, helium can be 10 - per second 13 liters of speed through the glass. Hydrogen permeable iron during 300 ~ 400, permeable nickel in 450, in 600 when the porous glass, porous bronze in 640. Diffusion coefficient. Mass flow rate per unit area and per unit area of the absolute value of the ratio of the concentration gradient of the normal use d said the unit for m2s - 1.

2, gas viscosity and thermal conductivity

in any medium, the momentum transfer between layer and layer and momentum exchange phenomenon known as the viscosity of the medium. In the water ring vacuum water pump, along the direction of airflow velocity gradient of cutting force per unit area and the ratio of the velocity gradient is viscous coefficient. Symbol: eta, unit: kg m - 1 s - 1.

when the gas concentration, gas migration can occur. This kind of phenomenon is advantageous to the normal maintenance of water ring vacuum pump, to understand the principle of vacuum water pump, to pump more in line with the requirements, the use of balance pressure, to prevent the danger. Use them efficiently.

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