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A louver-shaped baffle fixed tube-sheet heat exchanger and its processing and installation method

A technology of fixed tube-sheet type and installation method, applied in the direction of indirect heat exchanger, heat exchanger type, heat exchanger shell, etc., can solve the problem of strict shell-side flow velocity and tube bundle layout, complex structure, manufacturing and installation, and power equipment power Large and other problems, to achieve the effect of good anti-fouling performance of the equipment, easy assembly, and reduced pump power

Active Publication Date: 2019-11-26
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems in the commonly used traditional bow-shaped baffle shell-and-tube heat exchangers: (1) The shell side is "Z"-shaped to restrict the outflow. 2) The flow dead zone is easy to form behind the vertical baffles, resulting in a decrease in heat exchange efficiency and serious scaling; (3) The fluid "sweeps" the tube bundle, which induces vibration of the heat exchange tube bundle and shortens its service life
[0004] Among them, the spiral baffle heat exchanger can effectively reduce the flow dead zone, and has greatly improved the heat transfer effect and flow resistance, but the structure, manufacturing and installation are complicated
The flow direction of the fluid on the shell side of the baffle rod heat exchanger is parallel to the tube bundle, which almost realizes the complete counterflow of the tube-side and shell-side fluid. It has good shockproof and anti-fouling performance and low flow resistance; but it has strict requirements on the shell side flow rate and tube bundle layout. , limited in mass promotion and use
Across the existing technologies, various new heat exchangers have improved the deficiencies of traditional heat exchangers to a certain extent, but they still cannot replace bow-shaped baffle heat exchangers for promotion and use.

Method used

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  • A louver-shaped baffle fixed tube-sheet heat exchanger and its processing and installation method
  • A louver-shaped baffle fixed tube-sheet heat exchanger and its processing and installation method
  • A louver-shaped baffle fixed tube-sheet heat exchanger and its processing and installation method

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Experimental program
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Effect test

Embodiment approach 1

[0045] See figure 1 Shown: the louver-shaped baffle fixed tube sheet heat exchanger of the present invention includes a tube side inlet tube box 1, a shell 2, a heat exchange tube bundle 3, a tube side fluid inlet 4, a tube side fluid outlet 5, and a shell side fluid Inlet 6, shell side fluid outlet 7, tube side outlet tube box 8, louver-shaped baffle support structure 9, tube sheet 10. The tube boxes are located at both ends of the heat exchanger, and the tube side fluid inlet 4 and the tube side fluid outlet 5 are welded to the tube side inlet tube box 1 and the tube side outlet tube box 8 respectively. The shell-side fluid inlet 6 and the shell-side fluid outlet 7 are welded to the shell 2 and the positions are shown in the figure. The heat exchange tube bundle 3 is inserted into the louver-shaped baffle support structure 9, and both ends are welded and fixed on the tube sheet 10. The louver-shaped baffle support structure 9 is welded to the shell 2 at equal intervals acco...

Embodiment approach 2

[0057] The width of each blade is 25% of the diameter of the shell, the inclination angle θ is 80°, and its thickness is determined by the unsupported span of the heat exchange tube and the nominal diameter of the shell, and the range is 22mm. Others are the same as in embodiment 1.

Embodiment approach 3

[0059] The width of each blade is 20% of the diameter of the shell, the inclination angle θ is 10°, and its thickness is determined by the unsupported span of the heat exchange tube and the nominal diameter of the shell, and the range is 3mm. Others are the same as in embodiment 1.

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Abstract

The invention discloses a shutter-shaped baffle plate fixed tube-sheet heat exchanger and a machining and installing method and belongs to the technical field of heat exchangers used in industries of petrochemical engineering, energy power and the like. The shutter-shaped baffle plate fixed tube-sheet heat exchanger is characterized in that a heat exchange tube bundle installed on a shutter-shaped baffle plate in a penetrating and inserted manner is arranged in a heat exchanger shell; the heat exchange tube bundle is connected to fixed tube sheets arranged between a tube box and the shell in an expanded manner or is welded and fixed to the fixed tube sheets arranged between the tube box and the shell. A tube side inlet is formed in the upper side of a front tube box body, and a tube side outlet is formed in the lower side of a rear tube box body. A shell side outlet is formed in the upper side of the shell, and a shell side inlet is formed in the lower side of the shell. The shutter baffle plate is composed of a baffle ring and shutter blades arranged at a certain inclination angle. A flowing flow field of a shell side is even, a flowing dead zone of the shell side is small, meanwhile, the local fluid turbulence level is improved through the shutter baffle plate, the heat exchange efficiency is improved, consumption of pump power under the same heat exchange amount is reduced, the structure is compact, installing and machining are simple, scaling is not liable to be generated, the service life is long, and the shutter-shaped baffle plate fixed tube-sheet heat exchanger is suitable for occasions such as petrochemical engineering and power plants where fluid flow is large and consumption of pump power is large.

Description

Technical field [0001] The invention relates to a louver-shaped baffle-fixed tube-sheet heat exchanger and a processing and installation method, belonging to the technical field of heat exchangers used in petrochemical, energy and power industries, and particularly relates to a louver-shaped baffle-fixed tube-sheet heat exchanger. The technical scheme of the heat exchanger processing and installation method. Background technique [0002] The heat exchanger is a device that transfers part of the heat of the hot fluid to the cold fluid. It occupies an important position in chemical, petroleum, food and many other industrial productions. It can be used as a heater, cooler, condenser, evaporator, etc. in chemical production, and has a wide range of applications. Among them, shell and tube heat exchangers are mostly, with a series of advantages such as easy manufacturing, low production cost, wide selection of materials, convenient cleaning, strong adaptability, large processing capa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F9/24
CPCF28D7/16F28F9/24Y02P20/10
Inventor 雷勇刚李亚子宋翀芳景胜蓝王飞
Owner TAIYUAN UNIV OF TECH