A high-efficiency spiral tube heat exchanger

Abstract

A high-efficiency helical heat exchanger, the parabolic distribution helical heat exchange tubes 5 are superimposed and placed inside the inner shell 3, and are connected to the main outer pipe A3 at the center position. Support, the bottom of the inner shell 3 is supported by the inner shell support frame 6 at the bottom of the outer shell 1, the heat exchange pipe shunt device 10 is fixed on the inner shell support frame 6, and the upper top of the main outer pipe A3 is equipped with a reverse flow plug. Head 8, a steady flow distribution cover 7 is installed above the reverse flow plug 8; the parabolic diversion support frame 4 is composed of a circular ring rib B1 and a parabolic longitudinal rib B2. There are fixed hooks B3, anti-gravity guide vanes B4 are distributed between the parabolic longitudinal ribs B2, and spiral tube heat exchange tube clips B5 are distributed inside the parabolic longitudinal ribs B2.

Description

Technical field[0001]The invention relates to spiral tube heat exchanger technology.Background technique[0002]In the prior art, due to its flow characteristics, the helical tube heat exchanger has relatively low logarithmic average temperature difference in a large heat exchange area regardless of whether it is in a forward or reverse flow condition. During the flow heat exchange process, due to the flow The flow rate at the center of the inlet of the shell side is far greater than the flow rate at the edge. In addition, the heat exchange temperature difference at the end of the heat exchange section decreases, resulting in a significant decrease in the overall heat exchange efficiency; in order to increase the convective exchange of the spiral tube heat exchanger Thermal coefficient, the existing method usually adds a built-in spiral belt to the heat exchange tube in the spiral tube heat exchanger, and the heat exchange tube is equipped with baffles or false pipes and other turbule...

AI Technical Summary

Problems solved by technology

However, the installation space occupied by pipelines arranged side by side is relatively large, which is contrary to the design idea of ​​saving space; during the process of fluid transmission, especially the vibration of pipelines caused by high-speed fluid transmission, it will cause the vibration of adjacent pipelines. Friction and collision, when the pipeline is long, the diameter is small, and the stiffness is low, the vibration phenomenon is more obvious, which will seriously affect the safety and stability of the pipeline

If anti-vibration equipment is installed to increase the pipe clearance, not only will it require a larger installation space, but it will also make the pipeline structure more complicated and increase the cost of installation and maintenance

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