Vapor-liquid two-phase flow heat exchange pipe

Abstract

The invention provides a vapor-liquid two-phase flow heat exchange pipe. A vapor-liquid two-phase flow flows in the heat exchange pipe, and the vapor phase of the vapor-liquid two-phase flow can be condensed into the liquid phase during heat exchange. Multiple flow stabilizers are arranged inside the heat exchange pipe; each flow stabilizer comprises a core and a casing; each core is arranged inside the corresponding casing; each casing is connected and fixed to the inner wall of the heat exchange pipe; each core comprises a central rod axially arranged along the center of the heat exchange pipe and multiple radial rods extending in the radial direction along the central rod; multiple fins extending from the radial rods to the direction opposite to the flowing direction of the flow are arranged on the radial rods; the fins comprise tips; and the tips extend in the direction opposite to the flowing direction of the flow. The multiple flow stabilizers are arranged inside the heat exchange pipe, and the sizes of the fins of the flow stabilizers on the radial rods are increasing in the flowing direction of the flow inside the heat exchange pipe. The heat exchange pipe which adopts thenew structure and is provided with the flow stabilizers is provided, the vibration of the pipe is further reduced through change of the sizes of the fins of the radial rods, and thus the noise level is reduced.

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 has al...

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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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