Centrifugal Pump
For years, centrifugal pumps have been used for carrying
heavy fluids or with solid components.
The company has used this system over the last 26 years to replace regenerative
pumps -or paddle pumps- in the decantation of Liquefied Gases such as ammoniac,
carbonic gas, LPG and freons. The centrifugal system was never considered for
this task because of the cavitation -the pressure and flow rate drop at the
moment of the pump's generation- but the company has developed a pump with a
degasification system. This system allows to work simultaneously with gas and
fluid, letting just the fluid to come out, and eliminating by gravity the gas
or bubbles located into the pump's chamber, avoiding the cavitation.
The pump's chamber system let you to work with a NPSH -or low manometrical level-,
because it doesn't need to work flooded or with a particular installation for
getting a manometrical level. The reason is that the pump begins to generate
immediately after the ignition, due to the fluid's pressure and the high suction
power. Therefore, complicated operations are not needed, and the installation
of the pump is simple.
Mechanical Seal
The mechanical seal works into the pump's chamber: the pump
is refrigerated by the same fluid being decanted and the mechanical seal's service
life is increased.
Frequently, the pump works at very high pressures, producing a bigger effort
in the mechanical seal's track. In order to avoid this situation, a balanced
seal has been designed, dividing the pressure strength and letting the seal
work softly. It increases the tracks' service life and don't let the engine
to absorb the pressure effort.
Alignment
Our models have an auto-aligning coupling system, due to
the coupling and lantern system designed by the company. This system allows
the axle's engine to go forward and backwards at the moment of driving; this
avoids the bending of the axle's gaskets and the transmission of effort to the
pump's bearings. All of this, along with the fulcrum into the pump's chamber
and the perfect balancing of mobile parts assures a non-vibrating and noiseless
performance.
Why there is no cavitation in our pumps:
All of our pumps have a degasification
chamber, which allows the evacuation of gases produced by installation problems.
Such evacuation is made through the turbine's suction antechamber and the gases
return to the system due to the leveling.
They
don't need a By-Pass:
The pumps have a very simple installation
system because they don't need a safety valve. The pump reaches the tank or
reservoir fluid and pressure's level; therefore, even when the pump is still
generating pressure and flow once the unloading is over, there is no danger
of overpressure because turbines are tabulated to the required work pressure.
That system avoids the pump's cavitation because one of the pipes is connected
to the suction pipe used for overfeeding the pump's front chamber with fluid,
avoiding in this way the vacuum (this pipe has the same fluid level than the
tank). The second pipe sends to the top of the tank the gases produced on the
line or on the pump.
NPSH:
Bombadur's pumps don't need a minimum fluid level because
they are constantly full of fluid, due to the leveling system and their chambers'
design.
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