Production process for plate heat exchanger

Abstract

The invention discloses a production process for a plate heat exchanger. The production process is characterized by comprising the following steps of base plate treatment, base plate cutting, punch forming, punching and trimming, cleaning and drying, assembling, welding, pressure testing and packing; in the welding step, the obtained heat exchange plate set is put into a vacuum furnace and is welded at a high temperature; and after the high-temperature welding is completed, heating is stopped, and the heat exchange plate set which is welded into an integrated structure is kept in the vacuum furnace in a sealed manner and is cooled along with temperature reduction of the vacuum furnace, so that the heat exchange plate set is cooled in the vacuum environment, and accident situations such as the color change are avoided; and in the pressure testing process, the heat exchange plate set is put in the environment under the pressure of 2-3 MPa and subjected to a pressure bearing test. The production process for the plate heat exchanger is concise and efficient, the use strength and the service life of the plate heat exchanger can be guaranteed to the maximum extent, especially for rigid control over welding preparation and conditions, the process is safe and efficient, the quality is excellent, and the high-pressure test is conducted, so that the quality of products is further guaranteed, and the production process is worthy of popularization.

Description

technical field [0001] The invention belongs to the field of heat exchanger processing, in particular to a production process of a plate heat exchanger. Background technique [0002] With the advancement of science and technology, people have higher and higher requirements for energy conversion. Existing heat exchangers usually have shortcomings such as pressure resistance, corrosion resistance, and short service life due to insufficient welding control. People urgently need to find better ones. method to solve it. Contents of the invention [0003] Aiming at the problems existing at present, the invention provides a plate heat exchanger production process with strict control and good finished product quality. [0004] The present invention is achieved through the following technical solutions: [0005] A production process of a plate heat exchanger, comprising the steps of: [0006] a. Substrate treatment: The choice of the plate is 0.2-1.2mm stainless steel, nickel-ba...

AI Technical Summary

Problems solved by technology

[0002] With the advancement of science and technology, people have higher and higher requirements for energy conversion. Existing heat exchangers usually have shortcomings such as pressure resistance, corrosion resistance, and short service life due to insufficient welding control. People urgently need to find better ones. method to solve