Silicon carbide shell-and-tube heat exchanger with high heat transfer efficiency

Abstract

The invention discloses a silicon carbide shell-and-tube heat exchanger with high heat transfer efficiency, and relates to the technical field of heat exchangers. The silicon carbide shell-and-tube heat exchanger comprises a tube box. Two tube plates are rotatably connected to the inner wall of the tube box. A tube bundle is arranged between the opposite surfaces of the two tube plates in a communicating mode. A first baffle plate, a second baffle plate and a third baffle plate are separately fixedly connected to the outer wall of the tube bundle. A forward helical fin is rotatably connected between the opposite surfaces of the first baffle plate and the second baffle plate. A reverse helical fin is rotatably connected between the opposite surfaces of the second baffle plate and the thirdbaffle plate. Through the forward helical fin, the reverse helical fin, a downstream helical fin, a hairbrush, and forcing blades, power generated by flowing of a heat medium can drive the forcing blades to rotate and further can drive the hairbrush to move circumferentially to clean adjacent tube bundles in real time and remove dirt on the surfaces. The dirt can flow out along with the heat medium, and therefore the self-cleaning function of the device is achieved.

Description

technical field [0001] The invention belongs to the technical field of heat exchangers, in particular to a silicon carbide tube heat exchanger with high heat exchange efficiency. Background technique [0002] Tube-and-tube heat exchangers, also known as shell-and-tube heat exchangers, are the most typical partitioned wall heat exchangers. They have a long history and play a leading role. They are mainly composed of shells, tube bundles, tube sheets, baffles, and heads. ; One kind of fluid flows inside the tube, and its journey is called the tube side; the other fluid flows outside the tube, and its journey is called the shell side; the wall of the tube bundle is the heat transfer surface, and its main advantage is the heat transfer per unit volume. The area is large, the heat transfer effect is good, the structure is firm, the range of structural materials that can be selected is wide, and the operation flexibility is large. Therefore, tube and tube heat exchangers are often...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a silicon carbide tube and tube heat exchanger with high heat exchange efficiency. Through the design of forward spiral fins, reverse spiral fins, downstream spiral fins, brushes and force blades, it solves the problem of The problem that the existing silicon carbide tube and tube heat exchangers cannot be self-cleaning

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