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

A technology for shell-and-tube heat exchangers and stabilizing devices, which is applied in the direction of heat exchange equipment safety devices, heat exchanger types, heat exchanger shells, etc. Local temperature is too high or too low, the effect of uniform heat transfer and uniform gas phase

Active Publication Date: 2018-01-30
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, and the cost is high, so it gradually does not meet the needs of energy saving and environmental protection

Method used

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

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Embodiment Construction

[0038] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.

[0040] Without special instructions, the length unit of the parameters in this application is mm, and the unit of area is mm 2 .

[0041] figure 2 A sleeve-type two-phase flow stabilizing device arranged in a two-phase flow pipeline is shown, the stabilizing device includes a core body 1, the core body 1 is arranged in a pipeline 2, and the core body includes a plurality of concentric tubes 3 and fins 4, the fins 4 connect adjacent concentric tubes 3, thereby forming a plurality of small flow channels 11 between the concentric tubes and the fins.

[0042] The above-mentioned two-phase flow stabilization device can separate the two-phase fluid into a liquid phase and a gas phase, divide the li...

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Abstract

The invention provides a two-phase flow shell and tube heat exchanger and a stabilizing device thereof. The two-phase flow shell and tube heat exchanger comprises the sleeve type two-phase flow stabilizing device arranged on a fluid inlet pipe and / or a fluid outlet pipe of the heat exchanger. The two-phase flow stabilizing device comprises a core body, the core body comprises a plurality of concentric pipes and a plurality of fins, and the fins are connected with the adjacent concentric pipes. According to the two-phase flow shell and tube heat exchanger and the stabilizing device thereof, the passive two-phase flow stabilizing device with vibration and noise reduction functions can divide two-phase fluid into a liquid phase and a gas phase under the condition of not relying on external power or power sources, the liquid phase is divided into small liquid balls, the gas phase is divided into small bubbles, liquid phase back flowing is prohibited, smooth flowing of the gas phase is facilitated, the function of stabilizing the flow rate is achieved, and the vibration and noise reduction effects 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): F28D7/10F28F9/013F28F13/08
CPCF28D7/103F28F9/0133F28F13/08F28F2265/28F28F2265/30
Inventor 周慧辉徐建军黄彦平唐瑜
Owner NUCLEAR POWER INSTITUTE OF CHINA
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