Can a turbo pump water?
The dynamic difference between air and water is so great it makes the turbocharges design unsupportable of pumping a high density fluid like water. Turbos are designed to compress air by using hot expanding exhaust. Fluid does not compress and expands little.
What is the function of turbomolecular pump?
A turbomolecular pump is a type of vacuum pump, superficially similar to a turbopump, used to obtain and maintain high vacuum. These pumps work on the principle that gas molecules can be given momentum in a desired direction by repeated collision with a moving solid surface.
When should I start my turbo pump?
Answer: If the turbomolecular pump is valved off from the chamber an at atmosphere, the turbo pump can be turned on right after the mechanical pump is started and the foreline valve is open.
What pressure should I turn on my turbo pump?
Therefore, a fore-vacuum pressure of < 0.1 mbar must be ensured in order to operate the classical turbopump.
Where are turbo pumps used?
Turbomolecular pumps are used in a wide range of high and ultra-high vacuum applications, covering both clean applications (e.g. in analytical instruments or R&D), and very harsh applications in Semiconductor industry where the pumps have to handle corrosive gases or critical process conditions.
What is fore vacuum?
Fore vacuum pumps are defined as those which exhaust to atmospheric pressure. They are also required to support secondary pumps or to attain the initial conditions for their operation. There are two types of fore vacuum pumps: Dry-running backing pumps such as scroll, screw and diaphragm pumps.
How fast does a turbo pump spin?
Turbomolecular pumps (TMPs) are kinetic vacuum pumps which operate using a very fast spinning rotor (usually rotating at between 24,000 and 90,000 RPM). Their typical operating pressures are in the high to ultra-high pressure range between 10-3 and 10-11 mbar, employing pumping speeds of between 10 and 4,000 l/s.
Can turbo pump pump oil?
There is no oil in a turbo pump Or at least there certianly should not be any !), the oil that you change is in the roughing pump, aka the fore pump, which is the ordinary vacuum pump that pulls enough vacuum for the turbo-pump (or diffusion pump) that is built into the instrument to start working.
What is a molecular drag pump?
Molecular drag pumps have low pumping speed but high compression ratios up to foreline pressures of more than 20 mbar. When the two types of stages are combined together in one pump, extended operational pressure ranges can be achieved. 3 TURBO UMPS
What is the difference between a turbomolecular and compound molecular pump?
The turbomolecular pump is optimised for molecular flow conditions and requires a suitably sized two stage rotary vane pump or an oil free scroll pump to exhaust to atmosphere. A compound molecular pump (CMP) is based on the concept of combining bladed turbomolecular stages with molecular drag stages on the same rotor.
How do gas turbomolecular pumps work?
Gas molecules collide against a fast moving wall and are dragged into a channel toward the high pressure region. Conventional turbomolecular pumps have high pumping speed but low compression ratio at foreline pressures higher than 10-1mbar.
What is turboturomolecular pumps?
Turomolecular Pumps A compact turbo controller with a large clear graphical display, an intuitive user interface and serial communications providing full remote control and data logging functions via a new Windows™ based PC program. The controller automatically recognises and supports one 24V turbomolecular pump from the EXT/nEXT range.