DEBRIS FILTERS

PURPOSE

The BEAUDREY “W” debris filter is installed at the inlet of a condenser to arrest all debris that may obstruct or interfere with the cooling water flow in the condenser tubes and with the eventual downstream tube-cleaning system.

The debris are those that have by-passed the intake screens or grown past them in the pump pits and culverts (seaweed, grass, shells, eels, etc). Debris generated by cooling towers are also to be removed (pieces of packing, etc).

DESCRIPTION

The water enters the cylindrical, flanged spool piece with a rotating screening wheel divided into a number of deep, radial, debris-collection compartments. The downstream face of the compartments is fitted with the patented low head-loss NOCLING™ screening panel which is also fish-friendly, jellyfish and fiber-proof.

The water flows across the NOCLING™ element and the debris are arrested and stored in the compartments. When dirty (head-loss or timer actuation), the wheel starts rotating. It is driven by a peripheral gear and pinion device.

Each compartment passes in front of an upstream scoop which is connected via the flushing valve and pipe to the downstream side of the condenser.

The condenser head-loss provides the hydraulic head to create the backwash flow. All the debris are removed and sent to the condenser outfall.

ADVANTAGES

• Keeps the condenser totally debris-free and avoids tube-sheet cleaning

• Increases the plant’s power output by up to 1.5%

• Pay-back time is generally less than two years

• Avoids turbulence-generated tube decay and perforation

• Very low head-loss

• Improves the efficiency of condenser tube ball-cleaning systems

• Virtually no maintenance

• Fully accessible from the condenser water box

• Can handle any type of debris in large quantities

• Backed by over 80 years of experience and over a thousand references.

NECESSARY ANCILLARIES

• Differential pressure sensor

• Power-actuated flush valve

• Electrical control cabinet

• Back-wash flushing pipe