Connecting structure of non-metallic pipe and metal plate

Abstract

The invention discloses a connecting structure of a non-metallic pipe and a metal plate; and the connecting structure can realize connection between the non-metallic pipe and a hole in the metal plate by a connecting mode of a concave cavity and internal extrusion without needing chemical bonding, and is stable and reliable. The connecting structure is more suitable for connection of a fluorine-contained plastic pipe with high chemical stability and the metal plate, can be effectively applied to sealing connection between a heat exchange pipe of a heat exchanger and a metal pattern plate under the working conditions of high temperature and high corrosion, can save the cost, greatly improves the sealing strength, and prolongs the equipment service life.

Description

technical field [0001] The invention relates to the technical field of connection between non-metallic pipes and metal plates, and more specifically relates to a connection structure between non-metallic pipes and metal plates. Background technique [0002] PTFE (polytetrafluoroethylene) pipe has excellent high and low temperature resistance characteristics, and can be used for a long time under the condition of -190 ~ 260 ℃. PTFE material has good chemical stability, only fluorine vapor at high temperature, and its performance will change under alkali metal, and it does not react to all other concentrated and dilute inorganic organic acids, alkalis, and esters. Low surface friction coefficient, water repellent, dirt repellent, no fouling inside and outside the pipe wall. Non-toxic, non-flammable, etc., with high transparency, widely used in fluoroplastic heat exchangers, hot steam piping and other fields, with a wide range of uses. [0003] However, as a high-performance ...

AI Technical Summary

Problems solved by technology

Using this process, the PTFE tube cannot be directly connected and fixed with the metal flower plate, and needs to be welded twice, which is not only complicated in the process, but also high in labor costs.

In addition, the strength is only about 30-50kg. With the long-term high temperature and vibration during operation, the strength is difficult to guarantee, which will cause the welding to fall off and affect the service life.

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