A tube bundle support for a shell-and-tube heat exchanger

Abstract

The invention relates to a tube bundle supporting member for a shell-and-tube heat exchanger. The tube bundle supporting member comprises supporting holes. The supporting holes further include standard supporting holes and auxiliary supporting holes. Supporting lines and connecting lines identical in number are sequentially connected in an adjacent mode to form the sealing contour lines of the cross sections of the supporting holes. The tube bundle supporting member is characterized in that the connecting lines are concave curves formed by line segments or line segments and camber lines or camber lines, each standard supporting hole at least comprises one basic pipe distribution unit formed by three adjacent heat exchange tubes, each auxiliary supporting hole can at least accommodate one heat exchange tube, the number of the heat exchange tubes accommodated in one auxiliary supporting hole is less than that of the heat exchange tubes accommodated in one standard supporting hole. By the tube bundle supporting member, the problem of flow leakage at the edge of a tube distribution area is solved, tube distribution compact degree is increased, and overall heat exchange efficiency is improved.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to a tube bundle support for a shell-and-tube heat exchanger. Background technique [0002] Tube bundles are mainly used in shell and tube heat exchangers. The shell-and-tube heat exchanger includes a tube side and a shell side, and the shell side is mainly composed of a cylindrical shell, a tube sheet, a tube bundle and a support for supporting the heat exchange tube. [0003] The heat exchange tubes have a certain length. In order to prevent the heat exchange tubes from generating large deflection, it is necessary to arrange support members at a certain distance along the length direction of the tube bundle. After a traditional support with a circular support hole is arranged in the length direction of the tube bundle, the fluid in the shell side is prevented from flowing along the axial direction of the tube bundle. In order to make the shell-side fluid flow from one end of the t...

AI Technical Summary

Problems solved by technology

However, there are the following disadvantages: the pipe layout structure is loose, and the number of pipes is small; the triangular pipe layout must increase the tube spacing to meet the requirements of the strength and stiffness of the baffle rod; the manufacturing accuracy is not easy to guarantee; The diameter of the tube and the baffle rod is small, and the rigidity is not easy to guarantee; the area where the tube is not arranged needs to be filled with a fake tube, which increases the equipment manufacturing cost; there is a large leakage area between the edge of the tube layout area and the baffle ring; the baffle ring occupies Larger space is provided, and the number of pipes is reduced

However, there are the following disadvantages: the triangular pipe layout must increase the distance between the pipes to meet the strength and rigidity requirements of the hole edge of the support; Leakage flow area; no solution proposed for non-complete holes; flow area cannot be adjusted after tube spacing is determined

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