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A shell-and-tube heat exchanger with porous medium two-phase flow and its stabilizing device

A technology of shell-and-tube heat exchangers and stabilizing devices, applied in the direction of heat exchangers, indirect heat exchangers, tubular elements, etc., can solve the problems of not being suitable for energy saving and environmental protection, complex structure, and waste of materials, so as to avoid local temperature Too high or too low, uniform heat transfer, and improved heat transfer effect

Active Publication Date: 2017-09-15
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another example is the multi-phase flow rectification device disclosed in CN101639374A, wherein multi-tube pipes are arranged, the above-mentioned structure is complex, waste materials, high cost, and poor effect, so it gradually does not meet the needs of energy saving and environmental protection

Method used

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  • A shell-and-tube heat exchanger with porous medium two-phase flow and its stabilizing device
  • A shell-and-tube heat exchanger with porous medium two-phase flow and its stabilizing device
  • A shell-and-tube heat exchanger with porous medium two-phase flow and its stabilizing device

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Embodiment Construction

[0039] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.

[0041] Without special instructions, the length unit of the parameters in this application is mm, and the unit of area is mm 2 .

[0042] figure 2 A sleeve-type two-phase flow stabilizing device arranged in a two-phase flow pipeline 2 is shown, including a porous medium core 1, the porous medium core 1 is formed by connecting a number of rod-shaped objects 3, the rod-shaped The objects 3 are cross-connected in the X, Y, and Z three-dimensional directions to form a porous medium structure in which the holes 4 communicate with each other.

[0043] The above-mentioned two-phase flow stabilization device can separate the two-phase fluid into a liquid phase and a gas phase, divide the liquid phase...

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Abstract

The invention provides a two-phase flow shell-and-tube heat exchanger which comprises a shell. Sealing heads are arranged at the two ends of the shell, at least one sealing head is provided with a two-phase flow fluid inlet pipe, and a porous medium two-phase flow stabilization device is arranged in the fluid inlet pipe; the two-phase flow stabilization device comprises a porous medium core which is formed by connecting a plurality of stick-like objects; and the stick-like objects are crossed and welded in the X,Y and Z three-dimensional direction to form a porous medium structure with through holes. The passive two-phase flow stabilization device with the vibration attenuation and noise reduction function can separate two-phase flow into a liquid phase and a gas phase under the condition of being independent of external power or power sources, the liquid phase is divided into small liquid groups, the gas phase is divided into small bubbles, backflow of the liquid phase is restrained, smooth flowing of the gas phase is promoted, the effect of stabilizing flow is achieved, and the effects of vibration attenuation and noise reduction are achieved.

Description

technical field [0001] The invention relates to a two-phase flow heat exchange device and its stabilizing device, in particular to a two-phase flow stabilizing device with the functions of reducing the vibration of the flow pipeline and reducing the noise level. Background technique [0002] Two-phase flow and instability widely exist in heat exchange devices, scientific research and experimental devices, and industrial production equipment. For example, when fluid enters heat exchange equipment, it will cause water hammer phenomenon caused by space expansion. It will also deteriorate due to the large amount of flow heat exchange. When the vapor and liquid phases of the two-phase working medium are not uniformly mixed and flow discontinuously, the large-sized liquid mass will occupy the space of the vapor mass at high speed, resulting in unstable two-phase flow, which will violently impact the equipment and pipelines, resulting in strong vibration and shock. Noise seriously...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F1/40
CPCF28D7/1669F28F1/40
Inventor 周慧辉徐建军黄彦平唐瑜
Owner NUCLEAR POWER INSTITUTE OF CHINA
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