Jet vacuum pumps constitute a variety of Jet apparatuses and serve to pump out large quantities of gas from various installations operating at pressures from 760 to 10 mm Hg.
How do vapor jet vacuum pumps work? - Leybold
Diffusion pumps produce high and ultrahigh vacuum. Both types operate with a fast-moving stream of pump fluid in vapor or liquid form (water jet as well as water vapor, oil or mercury vapor). The pumping mechanism of all fluid entrainment pumps is basically the same.
Study of the Effective Torus Exhaust High Vacuum Pumping …
2023年8月23日 · The expansion through the nozzle creates a supersonic mercury vapor jet that is directed in the pumping direction. Gas molecules diffuse into the jet(s) (the eponymous process), and on average, receive a positive momentum in the pumping direction by means of intermolecular collisions with the vapor.
DE340446C - Mercury vapor jet pump - Google Patents
Mercury vapor jet pump. The steam jet vacuum pumps, which too to work against higher pressures of the fore-vacuum pressures of r to qo mm of mercury are able, have the...
DE398198C - Mercury vapor jet pump - Google Patents
The invention relates to a mercury vapor jet pump which, with a suction gap for the air of more than 0.5 mm wide, is capable of quickly achieving a good high vacuum against a poor prevacuum of...
DE379400C - Mercury vapor jet pump - Google Patents
The invention relates to mercury vapor jet vacuum pumps. It is known that in such pumps for high vacuum generation, the wall of the diffuser and the adjacent part...
Jet and Diffusion Pumps - Wiley Online Library
2016年6月9日 · Due to relatively low prime costs and easy installation, standard applications use liquid jet vacuum pumps when investment costs are particularly important. The shape of the vapor jet has been investigated experimentally by visualizing mercury and oil vapor jets by means of a high‐frequent gas discharge, as well as theoretically using gas ...
Experimental and Numerical Investigation of Expanding Mercury Vapor ...
2024年5月7日 · In this experiment, mercury is boiled and the vapor expanded through a nozzle into a vacuum vessel. The static pressure distribution in the expanding jet is measured by inserting a pressure probe at different axial positions.
The most common type of pump for use in high vacuum applications is the diffusion pump (or, more properly, vapor jet pump). Vacuum diffusion pumps are one of the oldest and most reliable ways of creating a vacuum down to 10-10 Torr, or even lower, at 25° C.
Mercury Vacuum Technologies – Precision Engineered Vacuum …
MVT provides engineered solutions for vacuum systems for power plants including steam ejector systems, liquid ring vacuum pump exhausters, hybrid exhausters, waterbox priming systems, deaerator vent exhausters, and condensate pump systems.