A Condensable Porous Steady Flow Device Heat Exchanger with Varying Spacing

Abstract

The invention provides a spacing variable condensable porous current stabilizer heat exchanger. The heat exchanger comprises a shell. The two ends of the shell are provided with end sockets correspondingly. 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-phaseflow can be condensed into a liquid phase in the heat exchange process. Current stabilizers used for vibration reduction and noise reduction are arranged in the heat exchange tubes. The multiple current stabilizers are arranged in the same heat exchange tube. The distance between the adjacent current stabilizers increases gradually in the flowing direction of fluid in the heat exchange tubes. According to the heat exchanger provided by the invention, vibration of a pipeline is weakened to the maximum extent according to change of the spacing between the current stabilizers when vapor-liquid two phases flow in the pipeline, and noise is lowered; meanwhile, flow resistance is reduced, and the heat exchange uniformity is improved.

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 The narrow space will make it difficult for the fluid to enter and pass 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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