Shakeproof process and shakeproof device for bent tube sections of U-shaped tube heat exchanger tube bundle

Abstract

The invention belongs to the field of shell and tube heat exchangers and particularly relates to a shakeproof process for bent tube sections of a U-shaped tube heat exchanger tube bundle. The process comprises the steps of first processing a shakeproof plate according to a tube arrangement mode of heat exchange tubes of the U-shaped tube heat exchanger tube bundle, drilling rows of mutually parallel tube holes on the shakeproof plate, cutting the shakeproof plate into a plurality of mutually parallel strip-shaped plates, enabling holes in the strip-shaped plates to be semicircular holes, enabling a connecting plate to be welded to a supporting plate positioned at the tail of the U-shaped tube heat exchanger tube bundle, finally assembly the U-shaped tube heat exchanger tube bundle, simultaneously installing the strip-shaped plates at the tails of the bent tube sections of the tube bundle to fill gaps among the heat exchange tubes, and installing the strip-shaped plates from inside to outside; when installation of one strip-shaped plate is finished, enabling the strip-shaped plate to be welded to the connecting plate, and fixing every strip-shaped plate through the connecting plate. Shake prevention is achieved, and service life of a U-shaped heat exchanger is prolonged. The invention simultaneously provides a shakeproof device adopted in the shakeproof process. The shakeproof device is simple and reasonable in structure, easy to process and manufacture and good in fixity.

Description

technical field [0001] The invention relates to an anti-vibration process and an anti-vibration device for a tube bundle bend section of a U-shaped tube heat exchanger, belonging to the field of shell-and-tube heat exchangers. Background technique [0002] Because heat exchangers are widely used in chemical, petroleum, pharmaceutical and other fields, various types of heat exchangers suitable for different occasions have been produced. The most widely used heat exchangers are shell and tube heat exchangers. , and the U-shaped tube heat exchanger is the only heat exchanger suitable for high temperature, high pressure and high temperature difference among heat exchangers. It is generally composed of tube box 1, shell 2, tube bundle 3, support plate 4 and other parts (Such as figure 1 As shown), its advantages are: the free floating of the tail of the U-shaped heat exchange tube solves the stress of temperature difference, which can be used for high temperature difference; the...

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Problems solved by technology

However, in the U-shaped tube heat exchanger, due to the vibration of the tubes caused by the flow of the fluid, the fatigue damage of the tube bundle is caused, and serious damage is caused to the U-shaped tube bend section 5, thereby affecting the service life. So far, the solution to the U-shaped tube heat exchange Most of the anti-vibration methods for the bent pipe section of the tube bundle are anti-vibration rods (the anti-vibration rods are generally pressed and formed by round steel), but this kind of anti-vibration rods are easy to deform, and the cooperation with the heat exchange tubes is not very tight during installation, and when the tail of the tube bundle vibrates The anti-vibration rod will be shifted in position, so it cannot play the role of anti-vibration

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