Y-shaped and semi-Y-shaped combined perforated baffle plate heat exchange

Abstract

The invention provides a Y-shaped and semi-Y-shaped combined perforated baffle plate heat exchanger. The heat exchanger comprises a shell (10), tube plates (5) and (6), a tube bundle (9), semi-Y-shaped baffle plates (1) and (4), Y-shaped baffle plates (2) and (3) and tube boxes (7) and (8). The tube bundle (9) is arranged in the shell (10) through the tube plates (5) and (6); the Y-shaped and semi-Y-shaped combined perforated baffle plates are arranged in the shell (10) at certain intervals, the baffle plate (3) is arranged in a staggered mode by rotating by a certain angle alpha with the baffle plate (2) as the benchmark, and the baffle plate (4) is arranged in a staggered mode by rotating by a certain angle alpha with the baffle plate (1) as the benchmark. A plurality of large holes areevenly arranged in the baffle plates corresponding to the heat exchange tubes, the heat exchange tubes penetrate through the large holes, a certain number of small holes are arranged in the baffle plates (1) and (4) corresponding to the same position, and a certain number of small holes are arranged in the baffle plates (2) and (3) corresponding to the same position. The Y-shaped and semi-Y-shapedcombined perforated baffle plates can greatly reduce the inlet and outlet pressure drop of shell pass fluid. A certain number of small holes are arranged in the baffle plates, the number of flowing dead zones behind the baffle plates can be reduced, the turbulence strengthening effect on the tube bundle behind the baffle plates is realized and the heat transfer efficiency and the structural stability can be improved. The embodiment of the invention is applied to heat exchange equipment, such as a shell-and-tube heat exchanger.

Description

technical field [0001] The patent of the invention belongs to the field of heat exchange equipment, such as shell-and-tube heat exchangers, and specifically relates to a Y-shaped and half-Y-shaped combined open-hole baffle heat exchanger. Background technique [0002] Since the Industrial Revolution, the development of the global economy has been based on industrial development. The development of industry is inseparable from energy. Energy has been an important engine driving industrial development for centuries. People's demand for energy is also increasing, especially with the gradual depletion of non-renewable energy such as coal, petroleum and other fossil fuels, and the increasingly serious environmental problems, energy saving and consumption reduction will be an important issue now and in the future. [0003] Efficient utilization of energy has become a trend of the times. As a kind of energy-saving equipment, heat exchangers can greatly improve heat transfer effic...

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Problems solved by technology

But the overall heat transfer effect is still poor

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