Connecting device for communicating collecting pipe and connecting pipe of heat exchanger

Abstract

The invention relates to a connecting device for communicating a collecting pipe and a connecting pipe of a heat exchanger. The connecting device comprises a clamping part and a positioning part, wherein the positioning part comprises a part of pipe body, which directly faces the liquid inlet end of a liquid inlet/outlet hole of the collecting pipe, on the connecting pipe and a circular convex ring which is correspondingly arranged at the liquid inlet/outlet hole of the collecting pipe; positioning structures through which the connecting pipe and the circular convex ring are clamped and sleeved together are respectively arranged at the tail end of the pipe body of the connecting pipe and the circular convex ring; the clamping part comprises an arc-shaped bottom part and an upper conical part; a through hole for the connecting pipe to penetrate is formed in the center of the clamping part; a limiting block which is used for limiting the clamping part is arranged on the outer wall of the pipe body, at the liq1uid inlet end, of the connecting pipe. According to the connecting device for communicating the collecting pipe and the connecting pipe of the heat exchanger, the axial connecting relationship between the connecting pipe and the collecting pipe along the axial direction of the connecting pipe and the problem about rotation of the connecting pipe along the circumferential direction of the collecting pipe are taken into consideration; the effect is more obvious; the design is reasonable; the structure is simple.

Description

technical field [0001] The invention relates to a connecting device used for connecting a header of a heat exchanger and a connecting pipe. Background technique [0002] A heat exchanger is a heat exchange device that transfers part of the energy of a hot fluid to a cold fluid so that the temperature of the fluid reaches the target specified in the process, also known as a heat exchanger. Heat exchanger is an indispensable equipment to realize heat exchange and transfer in chemical production process. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are more widely used. In the prior art, the heat exchanger usually includes a collecting pipe and a connecting pipe, and the collecting pipe and the connecting pipe are connected through a connecting device. There are corresponding countermeasures for the positioning problem between the connecting device and the header, and the fatigue damage between the c...

AI Technical Summary

Problems solved by technology

There are corresponding countermeasures for the positioning problem between the connecting device and the header, and the fatigue damage problem between the connecting device and the connecting pipe, but they are not perfect

Images