Pipe-shell type heat exchanger pipe penetrating guiding device

Abstract

The invention relates to a pipe-shell type heat exchanger pipe penetrating guiding device, in particular to a pipe penetrating tool for a large-caliber heat exchange pipe. The problem that deflected penetrating and inserting of a heat exchange pipe exist, and the heat exchange pipe cannot be rapidly and accurately guided into a next pipe hole is mainly solved. The pipe-shell type heat exchanger pipe penetrating guiding device comprises a guiding head, an expansion plug and a sleeve. Firstly, the guiding head is inserted into the sleeve, and the expansion plug is screwed into a screw for tool installation; during usage, the tool is arranged in the heat exchange pipe, and a cone at the front end of the guiding head axially fixes the heat exchange pipe; through rotation of the guiding head, the expansion plug is driven to move, the sleeve is extruded for radial deformation, and the guiding device tightly attaches the wall of the heat exchange pipe in the radial direction. The tool has theadvantages that the structure is simple, manufacturing is easy, mounting, dismounting and adjusting are convenient, and repeated usage can be conducted; by usage of the tool, the heat exchange pipe and the guiding device can be rapidly fixed into a whole, axial movement and circumference jumping are avoided, and the heat exchange pipe penetrating accuracy and effectiveness are ensured; and the pipe penetrating efficiency can be greatly improved, abrasion in the heat exchange pipe is prevented, and the heat exchange pipe hole quality is guaranteed.

Description

technical field [0001] The invention relates to a pipe-piercing guide for a shell-and-tube heat exchanger, in particular to a pipe-piercing tool for large-diameter heat exchange pipes. Background technique [0002] The heat exchange tube is the main heat transfer element of the heat exchanger and has the characteristics of a large number. When assembling the shell-and-tube heat exchanger, it is generally necessary to manually pass the heat exchange tubes through the tube holes of one side of the tube sheet, pass through several baffle tube holes, and pass through the tube holes of the other side of the tube sheet. Due to errors in the processing and assembly of tube sheets and baffles, the tube holes at various positions are not completely concentric. Therefore, once the position of a certain tube hole is deviated, the position of the interspersed heat exchange tube will inevitably be deviated, and it cannot be accurately and quickly introduced into the next hole. There ar...

AI Technical Summary

Problems solved by technology

Due to errors in the processing and assembly of tube sheets and baffles, the tube holes at various positions are not completely concentric

Therefore, once the position of a certain tube hole is deviated, the position of the interspersed heat exchange tube will inevitably be deflected, and it will not be able to be accurately and quickly introduced into the next hole.

There are a large number of heat exchange tubes, which can only rely on manual work at present, so the process of threading the tubes is difficult and the workload is heavy, which directly affects the assembly efficiency of the heat exchanger

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