Detachable U-shaped tube bundle tail anti-vibration structure

Abstract

The invention provides a detachable U-shaped tube bundle tail anti-vibration structure. The material cost can be effectively reduced, the heat exchange tube flat head workload is greatly reduced, andreplacement work after corrosion is facilitated. The detachable U-shaped tube bundle tail anti-vibration structure comprises a supporting tube vertically arranged in a shell pass cylinder and furthercomprises a plurality of flat steel bars and a pull rod. The flat steel bars are arranged between every two vertically-adjacent layers of U-shaped heat exchange tubes at the tail of a U-shaped tube bundle. The supporting tube penetrates through one end of each flat steel bar from top to bottom and then is locked through a nut. One end of the flat steel bar located at the top of the tail of the U-shaped tube bundle is connected with a baffle plate arranged in the shell pass cylinder. The other ends of the vertically-adjacent flat steel bars are connected through the pull rod.

Description

technical field [0001] The invention relates to the technical field of U-shaped tube heat exchangers, in particular to a detachable anti-vibration structure at the tail of a U-shaped tube bundle. Background technique [0002] With the rapid development of industrial production and the continuous expansion of production scale, the shell-and-tube heat exchanger tends to be larger, the heat exchange capacity is continuously improved, and the scope of application is becoming wider and wider. And many other factors, the vibration problem of shell and tube heat exchanger is becoming more and more prominent, and it is especially obvious in U-shaped tube heat exchanger. Due to the change of working conditions and the complexity of the flow state, there will always be large or small vibrations in the heat exchange tubes, which can often cause partial failure of the heat exchanger or even scrap the entire heat exchanger, bringing huge economic losses to the factory. Therefore, the exi...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of industrial production and the continuous expansion of production scale, the shell-and-tube heat exchanger tends to be larger, the heat exchange capacity is continuously improved, and the scope of application is becoming wider and wider. And many other factors, the vibration problem of shell and tube heat exchanger is becoming more and more prominent, and it is especially obvious in U-shaped tube heat exchanger. Due to the change of working conditions and the complexity of the flow state, there will always be large or small vibrations in the heat exchange tubes, which can often cause partial failure of the heat exchanger or even scrap the entire heat exchanger, bringing huge economic losses to the factory. Therefore, the existing The anti-vibration structure at the tail of the U-shaped tube bundle is generally installed at the tail of the elbow section of the U-shaped tube heat exchanger to prevent severe vibration at the tail of the tube bundle, but the structure is as follows figure 1 As shown, the anti-vibration plate 1 needs to be drilled first, and then cut into pieces. After passing through a layer of heat exchange tubes 2, insert the divided anti-vibration plate, and then pass through another layer of heat exchange tubes. The adjacent anti-vibration plate needs to be fixed by spot welding. In addition, due to the ellipticity deviation of the U-shaped pipe bend section, the straight section of the heat exchange tube needs to be lengthened to adopt this anti-vibration structure, otherwise the heat exchange tube on the outer layer will be more difficult to install. Exposing the end face of the tube sheet will invisibly increase the material cost and the workload of the flat head of the tube head, and because the tube bundle needs regular maintenance, replacement of wearing parts, and removal of dirt on the tube bundle, and the tail anti-vibration structure adopts a welded fixed structure, which is Bring great difficulty to the replacement work

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