Condensable heat exchanger with annular separation devices

Abstract

The invention provides a condensable heat exchanger with annular separation devices. The condensable heat exchanger comprises a shell. End sockets are arranged at the two ends of the shell correspondingly. A pipe plate is arranged at the connecting position of each end socket and the shell. A heat exchange pipe is connected with the pipe plates at the two ends. A steam phase in steam-phase and liquid-phase flow can be condensed to form a liquid phase in the heat exchange process, and the steam-phase and liquid-phase flow flows in a pipe pass. The separation devices are arranged in the heat exchange pipe. Each separation device comprises a core and a housing, wherein the core is arranged in the housing, the housing is connected with and fixed to the inner wall of the heat exchange pipe, the core comprises a plurality of concentric pipes and fins, and the fins are connected with the adjacent concentric pipes. According to the heat exchanger of a novel structure and with the separation devices, heat transfer is intensified when the steam-phase and liquid-phase flow flows in the pipe, meanwhile, pipe vibration is weakened, and the level of 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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