Noncondensable-gas tubular heat exchanger with lengths of flow stabilizing devices being variable

Abstract

The invention provides a gas-liquid two-phase flow multitube type tubular heat exchanger. The gas-liquid two-phase flow multitube type tubular heat exchanger comprises a shell. The two ends of the shell are each provided with an end enclosure. The connection position of each end enclosure and the shell is provided with a tube plate. Each heat exchange tube is connected with the tube plates at thetwo ends. A gas phase in gas-liquid two-phase flow is insoluble or indissolvable gas, and in other words, in the heat exchange process, the gas is not dissolved into liquid. The gas-liquid two-phase flow multitube type tubular heat exchanger is characterized in that the heat exchange tubes are internally provided with the flow stabilizing devices used for absorbing shock and reducing noise; each heat exchange tube is internally provided with the multiple flow stabilizing devices; and the lengths of the flow stabilizing devices are reduced to a certain position gradually in the flowing direction of fluid inside the heat exchange tubes in the first place, and then the lengths of the flow stabilizing devices are gradually increased from the certain position. According to the gas-liquid two-phase flow multitube type tubular heat exchanger, the lengths of the flow stabilizing devices are variable; when the gas-liquid two-phase flow exists in a pipe, vibration of the pipe is weakened to a greatest extent, and the noise level is lowered; and meanwhile, flow resistance is reduced.

Description

technical field [0001] The invention relates to a shell-and-tube heat exchanger, in particular to a two-phase flow heat exchanger containing non-condensable gas. Background technique [0002] Two-phase flow heat exchange containing non-condensable gas widely exists in heat exchange devices, for example, non-condensable gas is mixed in the heat exchange process, or non-condensable gas is produced due to equipment aging during fluid transportation, and natural gas, for example Condensation of mixed media with different boiling points, air separation, mixed refrigerant refrigeration, petroleum or waste plastic cracking, production The main technological process of the material gas production and other industries. [0003] The existence of the gas phase in the heat exchange process of the fluid containing non-condensable gas will lead to low heat exchange efficiency, worsen heat exchange, unstable fluid flow process, and lead to collision phenomenon. When the gas-liquid phase ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned technology does not solve the vibration and noise problems in the gas-liquid two-phase flow heat exchanger, and the above-mentioned solution has a complex structure, and because of the size of the thorns, the disturbance on the entire cross-section in the middle of the heat exchange tube cannot be guaranteed. The overall uniformity of the gas phase and liquid phase cannot be achieved, and the noise and vibration problems are still serious

[0005] The current arrangement of flow stabilizing devices to solve vibration and noise is not arranged according to the laws of shock absorption and noise reduction, resulting in excessive flow resistance in the pipe and poor effect of shock absorption and noise reduction

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