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Liquid inlet distribution device for heat exchanger tubes

A technology of distribution device and liquid inlet, applied in the field of simple liquid inlet device, can solve the problems of increased installation space requirement, high cost, low heat exchange efficiency, etc.

Active Publication Date: 2013-06-26
JIANGSU HUAYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the liquid usually flows vertically downwards in the heat exchanger, causing an uneven distribution of the heat exchange medium across the width of the plate, due to different heat conduction and mass flow, and therefore, the heat exchange area of ​​the heat exchanger is not optimized use
Irregular distribution of liquid and gas leads to low heat exchange efficiency
In order to solve this problem, a heat exchanger with a larger heat exchange surface or a tube boiler heat exchanger with a known distribution system and a device with improved efficiency is usually used to compensate, as described in US Patent No. US4,747,915 described, this leads to higher costs and increased space requirements for installation than is theoretically possible and desired

Method used

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  • Liquid inlet distribution device for heat exchanger tubes
  • Liquid inlet distribution device for heat exchanger tubes
  • Liquid inlet distribution device for heat exchanger tubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The simple liquid inlet distribution device for heat exchanger tubes designed by the present invention is provided with a frustum-shaped distribution device 2 whose size is suitable for the tubes on the tubes 1, and the device 2 is provided with an inward The flanging makes the wire mesh close to the tube wall at the port, and the part outside the tube is in contact with the surface of the tube sheet. The frustum-shaped distribution device is made of stainless steel wire mesh, and the mesh number of the stainless steel wire mesh is 60 mesh.

Embodiment 2

[0023] Such as figure 1 As shown, the simple liquid inlet distribution device for heat exchanger tubes is provided with a frustum-shaped distribution device 2 with a size suitable for the tubes on the tubes 1, and the device 2 is provided with an inward The flanging makes the wire mesh close to the tube wall at the port, and the part outside the tube is in contact with the surface of the tube sheet. The frustum-shaped distribution device is made of carbon steel. The mesh number of the carbon steel wire mesh is 120 mesh. The tangential liquid inlet hole 3 opened on 1, the number of tangential liquid inlets is 2, and its A-A sectional view is as follows Figure 4 shown.

Embodiment 3

[0025] A simple liquid inlet distribution device for heat exchanger tubes. A frustum-shaped distribution device 2 with a size suitable for the tubes is provided on the tubes 1. The device 2 is provided with an inward flanging inside the tubes 1 so that The wire mesh is in close contact with the tube wall at the port, and the part outside the tube is in contact with the surface of the tube sheet. The frustum-shaped distribution device is made of carbon steel. The mesh of the carbon steel wire mesh is 100 mesh. The tangential liquid inlet hole 3, the number of tangential liquid inlets is 4, and its A-A sectional view is as follows image 3 As shown, in the process of operation, it is found that the use of this distribution device makes the flux of our operation reach 1.5 times of the old process.

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Abstract

The invention discloses a liquid inlet distribution device for heat exchanger tubes. The liquid inlet distribution device comprises the tubes (1), and is characterized by also comprising circular-truncated-cone-shaped distribution devices (2) which are arranged on the tops of the tubes. The problem that the dropping liquid in equipment of the heat exchanger cannot be uniformly distributed in the prior art is solved, so that the distribution effect of the liquid which enters the tubes is optimized, the heat exchange effect of the heat exchanger is intensified, the utilization rate of the area of the heat exchanger tubes is improved, the energy consumption is reduced, and the economic benefits are improved.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a simple liquid inlet device for the tubes of the heat exchanger. Background technique [0002] Heat exchangers have been used in cooling and heating devices for a long time, which have a series of advantages, such as being compact and having a larger heat exchange surface in the same volume and space. When using heat exchangers in absorption plants as falling film absorbers and / or falling film desorbers, achieving a good distribution of the heat exchange medium in the heat exchangers has proven to be problematic. This is due to the fact that the medium entering the heat exchanger contains both a gas phase and a liquid phase. Gas tends to concentrate in the upper part of the inlet channel, so that the tubes closest to the inlet are filled with liquid first, so that the tubes at the end of the inlet channel are mainly flowing gas. In addition, the liquid usually flows vertically downwards in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F9/22
Inventor 徐志红桂媛李新良黄鑫
Owner JIANGSU HUAYI TECH