A turbo pump refers to a propellant pump that has two primary components, i.e., a driving gas turbine and a rotodynamic pump. Manufacturers mount these components on the same shaft or they bear them together. The purpose of this pump is producing a pressurized fluid that feeds a combustion chamber. That means you have to choose it carefully because it works within a pressurized and combustible environment. Here are 5 things to look for when buying a turbo pump.
The Type Of Turbo Pump That You Want
Two kinds of turbo pumps are available namely centrifugal and axial-flow pumps. The pumping in centrifugal pumps occurs by throwing the fluid outwards at a high speed. Doing so creates a centrifugal force, which pressurizes the fluid. In contrast, axial-flow pumps pressurize the fluid by alternating static and rotating blades. These pumps have smaller diameters than centrifugal pumps have. They are useful for pressurizing fluids that have a low-density. They produce modest levels of pressure as well.
The Efficiency Level Of The Turbo Pump
Turbo pumps use a lot of energy when it comes to the generation of pressure. This use translates into a high cost of electricity. Spending a lot of money on this utility bill is unwise if the efficiency of your turbo pump is low. You could have spent the same amount for a higher level of efficiency than your current pump has. Go for a well-engineered turbo pump with an efficiency level of 70% to 90%. Doing so helps you receive greater value for your money than you would with less efficient pumps.
The Effectiveness Of Its Braking System
Turbo pumps operate at high speeds so that they can produce as much fluid pressure as possible. Stopping them once they have done their work is a challenging task. Unfortunately, some people open the fore line connection while the rotor spins. Doing so leads to an inrush of gas from the fore line causing the rotor to lift. This lift might result in a catastrophic accident. Therefore, choose a pump with an effective inbuilt system that stops it after it plays its part. This system could be a vent solenoid or an automatic braking function.
Does The Pump Have An Inlet Screen?
Pumps collect a lot of debris as they generate pressure in a fluid for use in a combustion chamber. This debris limits its function because it cannot move as quickly as it ought to do to generate pressure. Therefore, reducing the amount of debris that enters this pump is necessary. An inlet screen would help you do that. It is an accessory to these pumps so not all pumps come with it. Check if yours does. Having it means that it will filter debris protecting the blades of the pump from damage. However, this screen reduces the efficiency of the turbo pump as well albeit slightly.
How Does The Turbo Pump Start?
Allowing the turbo pump to start and then running it to full speed is an excellent idea. More specifically, doing so improves the function of pump bearings. However, letting it run for to its full speed before you start using it takes some time. Therefore, a system to accelerate this process is necessary. Most Provac turbo pumps have this system. It ensures that the bearings in the pump reach optimal operating condition before you start using it. In most cases, this ramp-up system takes 45 minutes to get the pump ready for pressurizing fluids.