A non-condensable gas annular partition heat exchanger with variable length

Abstract

The invention provides a variable-length non-condensable gas annular separation device heat exchanger which comprises a shell. The two ends of the shell are provided with end sockets correspondingly. Pipe plates are arranged at the positions, connected with the shell, of the end sockets. Heat exchange pipes are connected with the pipe plates at the two ends. The gas phase in gas-liquid two-phase flow is indissolvable gas or gas difficult to dissolve, in other words, gas is not dissolved in liquid in the heat exchange process, annular separation devices for damping and noise reduction are arranged in the heat exchange pipes, multiple annular separation devices are arranged in the same heat exchange pipe, and the length of the annular separation devices is gradually reduced to one certain position at first in the flowing direction of fluid in the heat exchange pipes and then gradually increased from the certain position. By means of length changes of the separation devices, when gas-liquid two-phase flow exists in a pipeline, vibration of the pipeline is reduced to the maximum degree, the noise level is reduced, and meanwhile 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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