Classification Of Spiral Plate Heat Exchanger Groups

Spiral plate heat exchangers are divided into detachable and non-detachable types. Non-detachable spiral plate heat exchangers have a simpler structure, with both ends of the spiral channel welded shut. Detachable spiral plate heat exchangers are identical to non-detachable ones except for the sealing structure at both ends of the spiral channel.

To achieve mechanical cleaning, one end of the detachable spiral channel is open and sealed with a flat cover and gasket to prevent fluid leakage into the atmosphere or short-circuiting within the same channel. To improve the pressure-bearing capacity of the spiral plates, spacer columns are used to support them. There are two types of fluid inlets and outlets on the cylinder: normal and tangential. Tangential outlets are commonly used in China because they offer lower fluid resistance and allow impurities to be easily flushed out.

Using a rotary support is convenient, allowing the heat exchanger to be placed vertically or horizontally. The A and B fluids for heat exchange flow through opposite sides of the spiral plate. One fluid flows from the outside to the inside of the spiral channel and exits at the central outlet; the other fluid flows from the central inlet and outwards. The two fluids flow in a pure countercurrent manner. The operating temperature of a spiral plate heat exchanger depends on the materials used, which are mostly carbon steel, stainless steel, aluminum, copper, and titanium.