Design method of gas-liquid two-phase flow heat exchanger

Abstract

The invention provides a design method of a gas-liquid two-phase flow multi-tube type shell-and-tube heat exchanger. The design method involves a shell, the two ends of the shell are provided with sealing heads correspondingly, tube plates are arranged at the connecting positions between the sealing heads and the shell, heat exchange tubes are connected with the tube plates at the two ends, the gas phase in the gas-liquid two-phase flow is insoluble or slightly insoluble gas, namely, in the heat exchange process, the gas can not be dissolved in the liquid, division devices for damping and noise reduction are arranged in the heat exchange tubes, a plurality of division devices are arranged in the same heat exchange tube, and the division devices are designed in the method of being arrangedin the flow direction of a pipeline. According to the provided the novel design method of the heat exchanger, the vibration of the pipeline can be reduced to the maximum extent, the noise level is reduced, and meanwhile, the flowing 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 industries such as material gas production. [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, worse heat exchange, unstable fluid flow process, and water hammer phenomenon. When the gas-liquid phase of the two-p...

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Problems solved by technology

However, it was found during the operation of this device that the space A formed between the three pipes is relatively small because the pipes are tightly combined, because the space A is formed by the convex arc of the three pipes, so most of the space A The narrow space will prevent the fluid from entering and passing through, resulting in a short circuit of the fluid, which affects the heat exchange of the fluid and cannot play a good role in stabilizing the flow.

Simultaneously because the many tubes of above-mentioned structure are combined together, manufacture difficulty

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