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Fixed tube-sheet heat exchanger and manufacturing method thereof

A technology of fixed tube sheet type and manufacturing method, applied in the direction of heat exchanger type, heat exchanger shell, indirect heat exchanger, etc., can solve the problems of long heating and cooling time, easy accumulation of materials, increased cost, etc. The effect of load-bearing capacity, avoiding material accumulation, and stable welding structure

Inactive Publication Date: 2014-05-07
剑阁正能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. When the strength of the tube sheet is insufficient, only increase the thickness of the tube sheet to improve the strength of the tube sheet and prevent the deformation of the tube sheet. However, after the thickness of the tube sheet is increased, it will lead to an increase in cost, difficult to process drilling, heat absorption and radiation There are many problems such as slow heat rate, long heating and cooling time. Therefore, how to improve the strength of the tube sheet through structural improvement is a technical problem that people have been eager to solve but have not been successful.
[0007] 2. Since the tubes that are higher than the tube sheet cannot be completely spliced, there is a gap area between adjacent tubes, and the material is in the figure 1 The fluidity in the gap area shown by α is poor, and the material is easy to accumulate

Method used

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  • Fixed tube-sheet heat exchanger and manufacturing method thereof
  • Fixed tube-sheet heat exchanger and manufacturing method thereof
  • Fixed tube-sheet heat exchanger and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as Figure 2 to Figure 7 As shown, the fixed tubesheet heat exchanger in this embodiment includes an upper tubesheet 1a and a lower tubesheet 1b arranged inside the casing 6, a heat medium outlet 8 is arranged above the casing 6, and a heat medium outlet 8 is arranged below the casing 6 The heat medium inlet 7, the upper tube plate 1a and the lower tube plate 1b are provided with several installation holes 2, and the tube array 3 is fixedly arranged between the upper tube plate 1a and the lower tube plate 1b, and the number of the tube array 3 and the installation hole 2 are the same number, and each row of tubes 3 runs through the corresponding installation hole 2, the row of tubes 3 and the upper surface and lower surface of the upper tube plate 1a, and the lower tube plate 1b are welded and fixed, sealed, and the row of tubes 3 is located in the lower tube The part below the bottom surface of the plate 1b is the load-bearing pipe section 3a. The shape of the loa...

Embodiment 2

[0054] Such as Figure 8 As shown, in order to further improve the strength of the fixed tubesheet heat exchanger, the connection method between the upper tubesheet 1a and the tubes 3 is similar to that of the lower tubesheet 1b and the tubes 3, as follows:

[0055] The part of the tube array 3 located above the top surface of the upper tube plate 1a is the reinforced pipe section 3b. The shape of the reinforced pipe section 3b is bell-shaped. From the bottom to the top, the upper and lower sections are gradually expanded, similar to the shape of a cone or funnel, and the tops of the two adjacent reinforced pipe sections 3b are fixedly connected, and such a structure is added to the top of the upper tube sheet 1a Afterwards, the connection strength between the row tubes 3 and between the row tubes 3 and the upper tube plate 1a is improved, and the connection is more stable, and after the upper tube plate 1a is fixed by the reinforcing tube section 3b, they are adjacent to each...

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PUM

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Abstract

The invention discloses a fixed tube-sheet heat exchanger. The heat exchanger comprises an upper tube sheet, a lower tube sheet and a plurality of installation holes, wherein the plurality of installation holes are formed in the upper tube sheet and the lower tube sheet; nests of tubes are fixedly arranged between the upper tube sheet and the lower tube sheet, and pass through the installation holes; the parts, which are positioned below the bottom surface of the lower tube sheet, of the nests of tubes serve as bearing tube sections which are respectively in a horn mouth shape; the outer diameter of the bottom of each bearing tube section is greater than that of the top of the bearing tube section; and the bottom parts of each two adjacent bearing tube sections are fixedly connected with each other. According to the structure, the bearing tube sections at the bottoms of the nets of tubes are expanded to be of the horn mouth shape, and the bottoms of the bearing tube sections are fixedly connected with one another, so that each two adjacent bearing tube sections form a triangular support structure. Therefore, the fixed tube-sheet heat exchanger is welded firmly, the intensity of the fixed tube-sheet heat exchanger is high, the fixed tube-sheet heat exchanger is stabler by virtue of the triangular support structures, and the bearing capability of the tube sheets is improved on the premise of not increasing the thicknesses of the tube sheets.

Description

technical field [0001] The invention relates to a heat exchanger and a manufacturing method thereof, in particular to a fixed tube-sheet heat exchanger with a large-diameter tube sheet (the diameter of the tube sheet is greater than 1 m) and a manufacturing method thereof. Background technique [0002] In the production process of chemical, food, pharmaceutical and other industries, it is often necessary to cool the high-temperature material fluid and heat the low-temperature material fluid. These processes are generally completed by heat exchanger equipment, among which the fixed tube-sheet heat exchanger is one. The fixed tube-sheet heat exchanger has the advantages of solid structure, convenient work, small footprint, wide range of manufacturing materials and strong adaptability. Especially in high-pressure, high-temperature large-scale heat exchangers, fixed tube-sheet heat exchangers have obvious advantages. [0003] The main components of the fixed tube-sheet heat ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/00F28F1/00F28F9/26F28F9/013B23P15/26
Inventor 周祥
Owner 剑阁正能科技有限公司