Automatic leakage detection system and method for plate-type heat exchanger

Abstract

In order to solve the problems that a large workpiece, such as a heat exchanger, is liable to deform, the leakage detection process is low and the efficiency is low, the invention provides an automatic leakage detection system. The system comprises a vacuum box body, and a positioning automatic plugging mechanism located in the vacuum box body. The bottom of the vacuum box body is opened, and thevacuum box body is fixed on a support. The support is provided with a horizontal vacuum door plate corresponding to the opening of the bottom of the vacuum box body. The vacuum door plate is providedwith an upper horizontal power mechanism, and a support plate, the vertical distance from which to the vacuum door plate is fixed, is disposed below the vacuum door plate. The support plate is provided with a lower horizontal power mechanism, and the vacuum door plate is slidingly connected with the support plate through a vertical sliding mechanism and the support. The system can be used for theautomatic leakage detection of a large-size plate workpiece, such as a plate-type heat exchanger, can achieve the quick and efficient vacuum leakage detection of the plate-type heat exchanger. The system is high in automation degree, is high in operation speed, and saves manpower.

Description

technical field [0001] The invention belongs to the technical field of a vacuum leak detection box, and in particular relates to an automatic leak detection system and a leak detection method for a plate heat exchanger. Background technique [0002] The plate heat exchanger is a high-efficiency plate heat exchanger composed of a series of metal sheets with a certain corrugated shape. A thin rectangular channel is formed between the various plates, and heat is exchanged through the plates. Heater is an ideal equipment for liquid-liquid and liquid-vapor heat exchange. It has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small footprint, wide application and long service life. [0003] The heat exchange plate used in the large-scale plate heat exchanger has a very large size, about 2900X1500X30mm, and a weight of about 50Kg. It has a large area, such a large and thin feature that it is very easy to deform during transportati...

AI Technical Summary

Problems solved by technology

[0003] The heat exchange plate used in the large-scale plate heat exchanger has a very large size, about 2900X1500X30mm, and a weight of about 50Kg. It has a large area, such a large and thin feature that it is very easy to deform during transportation, so When performing vacuum leak detection on it, it needs to be placed on a tooling board of the same size and then transported to a vacuum leak detection box, and then vacuum leak detection is performed, because the plate heat exchange plate itself has a relatively large weight , and is easy to be destroyed manually, so there have always been the problems of complex leak detection process of plate heat exchange plate, large leak detection labor, and low leak detection efficiency. If it can be automatically connected and leak detected, it can save a lot of manpower and material resources Therefore, it is of great significance to provide a vacuum detection device that can be used for automatic leak detection of large plate heat exchange plates

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