Flexible internal supporting type guide head for pipe penetration of heat exchanger

Abstract

The invention provides a flexible internal supporting type guide head for pipe penetration of a heat exchanger. The guide head comprises a guide piece (1) and an elastic supporting piece (2) which is located below the guide piece (1) and fixedly connected with the guide piece (1), wherein the guide piece (1) comprises a guide head body (11), a connecting part (12) and any transition part (13); the outer diameter of the guide head body (11), the outer diameter of the connecting part (12) and the outer diameter of the transition part (13) are decreased gradually; and the elastic supporting piece (2) comprises a connecting shaft (21) and an elastic supporting strip (22). The invention further provides a method for conducting pipe penetration of the heat exchanger by using the flexible internal supporting type guide head. The flexible internal supporting type guide head has good rigidity and high precision, and the problem that guiding and concentricity cannot be achieved in the pipe penetration process of the heat exchanger is effectively solved; installation is easy, guiding is reliable, firmness and stability are achieved, and using is easy and convenient; and the success rate is high, the pipe penetration time is shortened, the pipe penetration precision is improved, and the breakage rate of heat exchange pipes, pipe plates and baffle plates in the pipe penetration process is decreased.

Description

technical field [0001] The invention relates to a heat exchanger pipe threading technology and an auxiliary tool for heat exchanger pipe threading, in particular to a flexible inner support type guide head for heat exchanger pipe threading. Background technique [0002] The heat exchange tube is one of the important parts of the heat exchanger product. The heat exchange tube must pass through the baffle plate and the tube sheet many times in the heat exchanger, so that the medium inside and outside the heat exchange tube can exchange heat, while the inside and outside of the heat exchanger The heat exchange tube is a heat exchange tube bundle composed of many heat exchange tubes. Therefore, keeping the heat exchange tubes parallel in the heat exchanger and the tube threading technology is a particularly important process in the heat exchanger manufacturing process. [0003] At present, there are some problems in the tube penetration technology of heat exchangers, which are m...

AI Technical Summary

Problems solved by technology

[0004] First, the tube bundle of the heat exchanger is long, and the heat exchange tube penetrates from one end of the baffle or tube plate, and drives out from the other end. Due to the flexibility of the long heat exchange tube, it is difficult to connect with each baffle and the tube holes on the tube sheet remain concentric;

[0005] Second, the end of the heat exchange tube is a flat structure, and its outer diameter is very close to the inner diameter of the tube hole. During the process of threading the tube, the heat exchange tube often collides with the periphery of the tube hole and cannot be penetrated;

[0006] Third, due to the influence of the heat exchanger tube sheet, baffle drilling accuracy and tube bundle assembly accuracy, there is a phenomenon of inconsistency in the coaxiality of the tube holes at the corresponding positions of each tube sheet and baffle, resulting in difficulty in pipe penetration

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