Improved structure of heat exchanger baffle plate

Abstract

The invention provides an improved structure of a heat exchanger baffle plate. The improved structure comprises a plurality of baffle plate bodies which are arranged in a heat exchanger shell and provided with flow guide notches, heat transfer pipe holes which are formed in the baffle plate bodies and used for being connected with heat transfer pipes in a penetrating mode, and the notches of every two adjacent baffle plates are arranged in a staggered mode, so that an S-shaped fluid channel is formed in the heat exchanger shell. The improved structure is characterized in that the flow guide plates are arranged at the edges of the portions, on the two sides of the notch, of each baffle plate body, and an inlet baffle is arranged at the edge of the portion, directly facing the notch, of each flow guide plate body. Compared with the prior art, the improved structure has the advantage of reducing impact of bypass flow and a heat exchange working medium on the heat transfer pipes.

Description

[0001] Technical Field: The present invention relates to a heat exchange technology. [0002] Background technique: [0003] As our country is facing problems such as low energy utilization efficiency and backward energy industrial equipment, the energy utilization rate needs to be improved, and the potential for energy saving is huge. Heat exchangers are important energy-consuming equipment in industrial production plants, and their application energy consumption accounts for about 14% of the total energy consumption of equipment production. Currently, shell-and-tube heat exchangers account for more than 60% of heat exchangers. [0004] Among all heat exchanger products in China, partition wall type bow-shaped baffle heat exchangers account for more than 80%. Among them, bow-shaped baffles are the most commonly used form of baffles. A baffle plate, the heat exchange working medium passes through the gap to step over the baffle plate one by one, so the baffle plate plays the ro...

AI Technical Summary

Problems solved by technology

[0005] The heat exchange working medium traverses the heat transfer tube bundle, which on the one hand causes the heat transfer tube to vibrate, and on the other hand, when the fluid flow rate is large, it is easy to cause impact on the three-dimensional fins on the heat transfer tube, which is likely to cause damage to the heat transfer tube and cause failure

[0006] There is often a gap between the inner wall of the heat exchanger shell and the heat transfer tube. When the heat exchange working medium flows, it tends to flow to the part with less resistance, so it is easy to generate a bypass flow that is not occupied by the heat transfer tube and reduce the heat transfer. efficiency

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