A Condensable Porous Steady Flow Device Heat Exchanger

Abstract

The invention provides a vapor-liquid two-phase flow tube and shell heat exchanger. The tube and shell heat exchanger comprises a shell. The two ends of the shell are provided with end sockets. Tube plates are arranged at the junctions between the end sockets and the shell. Heat exchange tubes are connected with the tube plates at the two ends. A vapor phase in vapor-liquid two-phase flow can be condensed into a liquid phase in the heat exchange process. The vapor-liquid two-phase flow flows in a tube pass. Current stabilizers are arranged in the heat exchange tubes. Each current stabilizer comprises a core body and an outer shell, the core body is arranged in the outer shell, the outer shell is connected and fixed to the inner wall of the corresponding heat exchange tube, the core body isan integrated structural part extending in the length direction of the outer shell, and the structural part is provided with a plurality of through holes. The current stabilizer heat exchanger of a novel structure, provided by the invention, conducts enhanced heat transfer when the vapor-liquid two-phase flow flows in a pipeline. Meanwhile, vibration of the pipeline is weakened, and noise is lowered.

Description

technical field [0001] The present invention relates to a shell-and-tube heat exchanger, and more particularly to a two-phase flow heat exchanger containing condensable gas. Background technique [0002] Vapor-liquid two-phase flow heat exchange widely exists in various heat exchange devices. Due to the existence of the vapor phase in the heat exchange process of vapor-liquid two-phase flow, the heat exchange efficiency will be low, the heat exchange will be deteriorated, and the fluid flow process will be unstable. , and will lead to the occurrence of water hammer phenomenon. When the gas-liquid phase of the two-phase working fluid is not uniformly mixed and flows discontinuously, the large-sized liquid mass will occupy the air mass space at high speed, resulting in unstable two-phase flow, which will violently impact equipment and pipelines, resulting in strong vibration and noise , which seriously threatens the safety of equipment operation. [0003] The inventor also d...

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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 Narrowness will make it difficult for the fluid to enter and pass through, resulting in a short circuit of the fluid, which affects the heat transfer 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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