Table of Contents
What is scoop in BFP?
Scoop control is a type of flexible coupling in between driver & Driven. Normally there are wheels (Primary on driver & Secondary on driven)filled with oil. Secondary wheel oil level can be control by inserting/withdrawal of scoop.
What is cavitation in boiler feed pump?
Cavitation occurs when the absolute inlet pressure of a fluid drops below what is required by the pump design to prevent the pumped fluid from vaporizing in the eye of the impeller. This sounds like a growling, gurgling, or marbles moving through the pump.
What is balancing pressure in boiler feed pump?
One side of balancing drum, pressure=discharge pressure while another side of balancing drum, the pressure =suction pressure (slightly greater than suction pr. which is maintained by a balancing line connected to suction line of pump.
What is scoop in boiler feed pump?
[4] Scoop tube Operating at stepless output rotating speed, the fluid coupling for motor-driven boiler feed pump is provided with a scoop tube. Since the scoop tube is used to scoop oil circulating at a high speed, the tube tip is made of a special alloy for higher erosion resistance.
What is Scoop type fluid coupling?
Variable speed fluid coupling / Scoop coupling provides step less speed variation in a wide range when connected to fixed speed electric motor. The speed variation in variable speed fluid coupling / scoop coupling is obtained by varying the oil filling in coupling through a sliding scoop tube when in operation.
What is the function of scoop tube?
Basically it regulates the flow of oil to vary the speed between driver & driven machines.
How do you fix pump cavitation?
Try the following:
- Reduce motor speed (RPMs).
- Install an impeller inducer.
- Incorporate a booster pump into your pump system.
- If possible, reduce the temperature of your pump, liquid, and/or other components.
- Increase liquid level around the suction area.
Why is cavitation bad?
Cavitation causes pump performance deterioration, mechanical damage, noise and vibration which can ultimately lead to pump failure. Vibration is a common symptom of cavitation, and many times the first sign of an issue. Vibration causes problems for many pump components, including the shaft, bearings and seals.
What is scoop control?
Easy operation of scoop tube in auto or manual mode. Labyrinth Seals on shaft ensures no leakage from shaft ends. Smooth & controlled acceleration of heavy masses from stationary to running condition which improves service life of the motor. High control accuracy and fast reaction times.
How does a scoop coupling work?
Description. ELECON make ESC series of Variable Fill Scoop Fluid Coupling provides step less speed variations when connected to a constant speed electric motor. The variation in speed is obtained by change of quantity of oil in the main circuit through scoop tube movement, sliding in & out.