Floating Suction Unit (FSU), also known as a Floating Suction Device or Floating Suction System, is a specialized equipment used in storage tanks, typically in the oil and petrochemical industry. Its primary purpose is to improve the quality of liquid withdrawal from the tank by ensuring that the suction point for the liquid remains near the surface, away from the tank's bottom, where sediments, debris, and water may accumulate.
Here are the key components and functions of a Floating Suction Unit:
Floating Device: The core component of an FSU is a buoyant floating device or assembly that rests on the surface of the liquid inside the tank. This floating assembly moves up and down with the liquid level, ensuring that the suction point remains just below the liquid's surface.
Suction Line: Connected to the floating device, there is a flexible suction line that extends down from the floating device to a point near the tank's center. This is the part of the unit that actually draws the liquid out of the tank.
Anti-Vortex Plate: To prevent the creation of vortexes or turbulence in the tank, which can lead to the intake of unwanted sediments or gases, an anti-vortex plate is often installed at the top of the FSU's suction line.
Liquid Quality Improvement: By keeping the suction point near the liquid's surface, the FSU helps to ensure that the cleaner liquid is withdrawn from the tank. This is especially important in applications where sediment, sludge, or water accumulation at the tank's bottom could contaminate the product being drawn.
Increased Efficiency: Using an FSU can increase the efficiency of tank draining, as it allows operators to extract more usable product from the tank without the need for manual adjustments or excessive downtime for cleaning.
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