Heat exchangers are used in many industries, mainly used in refineries and chemical plants. Its purpose is to exchange heat from one place to another, usually from a liquid in another liquid. The economic efficiency of this equipment requires regular inspection of heat exchangers to determine whether the integrity of the device.
Where heat exchangers are found?
Most homes have a heat exchanger of a species, the common household heat exchanger can be foundRefrigerate. In hot climates air conditioning systems are often a different type of heat exchanger. Cars include them too - will remove the radiator causing the excess heat from the cooling fluid through the use of natural air flow through the forward movement of the vehicle.
A similar principle applies in large industry, where the heat will be transferred from one place to another. The most common type of heat exchanger found in oil refineries and other large plants is the "shell and tube heat --exchanger.
This design employs a large shell, you can usually have a very large diameter tube that can withstand high pressure. It contains a bundle of tubes inside. The heat is exchanged from two different liquids. A fluid flows through the shell of the exchanger, while the other flows through the tube bundle. The two liquids do not have direct contact with each other, but changed the difference in the respective heat values is by indirect contact, which will be made.
A tube bundleHeat exchangers is a complex design. The internal pipes are often of different types and designs to achieve different results. Some tubes may be smooth, while others may ribbed horizontally or lengthwise. The tubes can also cooperate with different materials and different heat conductivity. You can choose from stainless steel, carbon will be steel, brass, copper or copper-nickel made, for example.
Because of their complexity, it is necessary to have the device regularly regularlyexamined. This can be determined, the thickness of the pipes, which are subject to pitting and corrosion and erosion over time. The condition of the entire tube bundle can be mapped and evaluated by a very detailed study using a device as an Internal Rotary Inspection System.
The Internal Rotary Inspection System uses ultrasonic examination, and it is non-destructive in nature. The Internal Rotary Inspection System probe in a tube, are inserted, thethen filled with water.
The Internal Rotary Inspection System probe has a small mirror, rotate and focusing an ultrasound beam on the wall of the tube. The mirror rotation is by a small turbine, which in turn propelled by water pressure as it is driven pumped into the hose. The Internal Rotary Inspection System probe is slowly pulled out of the tube at a rate of about one inch or 25 millimeters per second, recording the condition of the inner wall of the tube, asprogresses.
The results obtained from a heat exchanger with an internal control Rotary Inspection System probe is usually extremely accurate. Accuracy can be as good as within, 005 inches or 13 millimeters. Of course, to this accuracy, it is necessary to win the pipes thoroughly cleaned down to bare metal before the inspection.
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