High-temperature gas-liquid plate heat exchanger resistant to sudden temperature change

Abstract

The invention discloses a high-temperature gas-liquid plate heat exchanger resistant to sudden temperature change. The high-temperature gas-liquid plate heat exchanger resistant to sudden temperaturechange comprises a heat exchange plate module, wherein an upper head and a lower head are arranged at the two ends of the heat exchange plate module correspondingly; the heat exchange plate module comprises a plurality of heat exchange plate assemblies and clamping plates which are stacked at intervals; a liquid inlet is formed in the right side of the upper part of the heat exchange plate module;a liquid outlet is formed in the left side of the lower part of the heat exchange plate module; the heat exchange plate assemblies comprise heat exchange plates; each heat exchange plate is formed byfolding a rectangular plate in an embossing mode; the heat exchange plates are supported by liquid side pressing strips to form a liquid circulation channel; the heat exchange plates which are not adjacent to each other are supported by air side pressing strips to form an air circulation channel; head high-temperature-resistant heat preservation materials are arranged outside the upper head and the lower head; a gas inlet is formed in the upper head; and a gas outlet is formed in the lower head. According to the high-temperature gas-liquid plate heat exchanger resistant to sudden temperaturechange provided by the invention, the heat exchange plates are folded in half to replace welding, so that the machining cost is low, thermal stress damage caused by drastic temperature changes is small, and durability is high; the heat exchange area is large, so that the heat exchange efficiency can reach 90 percent or above; and the problem that the heat exchange plates are prone to breakage is expected to be solved, and the high-temperature gas-liquid plate heat exchanger resistant to sudden temperature change is particularly suitable for high-temperature environments with drastic temperature changes.

Description

technical field [0001] The invention relates to the field of heat exchange, in particular to a high-temperature gas-liquid plate heat exchanger resistant to sudden temperature changes. Background technique [0002] Heat exchange is a common process in people's production and life. The heat exchangers currently used are mainly plate heat exchangers, tube-and-tube heat exchangers, etc. Among them, the plate heat exchanger is composed of a series of metal plates with a certain corrugated shape. A new type of high-efficiency radiator made of metal plates, a thin rectangular channel is formed between the metal plates, and heat exchange is performed through the metal plates. It has the advantages of light weight, small size, and compact structure. Its total heat transfer coefficient is about 3-5 times that of the heater, the heat exchange area per unit volume is about 3-5 times that of the shell-and-tube type, and the floor area is only 1 / 5-1 / 6 of the shell-and-tube type, which is...

AI Technical Summary

Problems solved by technology

However, at present, the main application of plate heat exchangers in China is in gas-gas heat exchange and liquid-liquid heat exchange. In the case of gas-liquid plate heat exchange, due to the large difference in heat transfer coefficient of the two-phase fluid, the two ends of the heat exchanger The temperature difference is large, and the heat exchange plate is easy to break when the heat exchange plate is at high temperature, especially when the temperature changes suddenly, and it is difficult to use normally

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