Flow stabilizer distance enlarging condensable gas heat exchanger
A technology of steady flow device and shell-and-tube heat exchanger, applied in indirect heat exchanger, heat exchanger type, heat transfer modification, etc., can solve unstable fluid flow process, threat to equipment operation safety, two-phase flow Instability and other problems, to achieve the effect of reducing noise level, reducing noise and vibration, and improving heat exchange uniformity
Inactive Publication Date: 2018-04-10
SHANDONG UNIV
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[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 impact 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
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[0034] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0035] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.
[0036] It should be noted that, unless otherwise specified, the two-phase flow mentioned in the present invention is a vapor-liquid two-phase flow, where the vapor phase can be condensed into a liquid phase during the heat exchange process.
[0037] Such as figure 1 A shell-and-tube heat exchanger is shown, and the shell-and-tube heat exchanger includes a shell 4, a heat exchange tube 6, a tube-side inlet pipe 12, a tube-side outlet pipe 13, a shell-side inlet connecting pipe 14 and a shell The outlet connecting pipe 15; the heat exchange tube bundle composed of a plurality of parallel heat exchange tubes 6 is connected to the front tube sheet 3 and the rear tube sheet 7; the front end of the fr...
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The invention provides a gas-liquid two-phase flow multi-tube type shell-tube heat exchanger. The gas-liquid two-phase flow multi-tube type shell-tube heat exchanger comprises a shell. Sealing heads are arranged at the two ends of the shell correspondingly. Tube plates are arranged at the connecting positions of the sealing heads and the shell. Heat exchange tubes are connected with the tube plates at the two ends, and a gas phase in gas-liquid two-phase flow can be condensed into a liquid phase in the heat exchange process. Each heat exchange tube is internally provided with flow stabilizersfor damping and noise lowering. The same heat exchange tube is internally provided with the multiple flow stabilizers. In the flowing direction of fluid in the heat exchange tubes, the distance between the adjacent flow stabilizers is gradually increased. According to the provided gas-liquid two-phase flow multi-tube type shell-tube heat exchanger, through the length changes of the flow stabilizers, when gas-liquid two-phase flow exists in a pipeline, pipeline vibration is weakened to the maximum degree, the noise level is reduced, meanwhile, flowing 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 impact 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] Therefore, aiming at the ...
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IPC IPC(8): F28D7/16F28F13/08
CPCF28D7/16F28F13/08
Inventor 郭春生陈子昂刘勇王天跃单晓晖马小禹
Owner SHANDONG UNIV
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