The floating head heat exchanger is a specially designed heat exchanger that is often used in situations where thermal expansion or contraction needs to be handled, especially in high temperature and high pressure operating environments. The structural design of this heat exchanger allows the heat exchange tube bundle at one end to float freely to adapt to the expansion or contraction caused by temperature changes, avoiding equipment damage caused by excessive stress caused by temperature changes.
Main features:
1. Floating head design: The "floating head" of the floating head heat exchanger means that the tube bundle at one end of the heat exchanger is not fixed, but connected by a floating head (or floating tube sheet). This design allows the tube bundle to expand and contract freely when the temperature changes, avoiding stress accumulation caused by thermal expansion, thereby improving the safety and durability of the equipment.
2. Adapt to temperature changes: During operation, temperature changes of the heat medium may cause the tube bundle to expand or contract. The floating head heat exchanger reduces the thermal stress caused by temperature changes by allowing the tube bundle to move freely under the guidance of the floating head, avoiding equipment rupture, leakage or other failures due to excessive stress.
3. Suitable for high temperature and high pressure: Floating head heat exchangers are very suitable for systems that handle high temperature and high pressure fluids, especially in process pipelines in industries such as petroleum and chemicals. The temperature fluctuations of these fluids are large, and traditional fixed tube sheet heat exchangers cannot effectively cope with them.
Main components:
1. Floating head: This is the key component of the floating head heat exchanger. The floating head is usually a freely movable tube sheet, which is connected to the fixed tube sheet, allowing the tube bundle to expand or contract freely when the temperature changes.
2. Tube bundle: It consists of multiple heat exchange tubes. One end of the tube bundle is connected to the heat exchanger body through the floating head, and the other end is fixed by the fixed head.
3. Fixed head: The tube sheet at the other end is usually fixed to keep the other end of the tube bundle stable. The design of the fixed head ensures a clear flow path of the fluid inside and outside the tube.
4. Shell: The shell part is usually used to contain external fluids. It can also contain some internal structures, such as brackets that support the tube bundle.
Application areas:
Floating head heat exchangers are widely used in the following areas:
• Petrochemical industry: for example, used in distillation tower coolers, heat exchangers, catalytic reactors, etc.
• Power industry: widely used in boiler heat exchange, cooling systems, etc.
• Pharmaceutical industry: commonly used in temperature control and heat transfer during the reaction process.
• Food industry: heat exchangers used for high-temperature heating or cooling processes.
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