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Multi-tube plate heat exchanger

A technology of heat exchangers and tube sheets, applied in the direction of heat exchanger types, heat exchanger shells, indirect heat exchangers, etc., can solve problems such as poor sealing effect, equipment user shutdown losses, economic losses, etc., to achieve temperature resistance The effect of improved pressure performance, less leakage, and less deformation

Active Publication Date: 2018-03-30
李志典
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the maintenance and shutdown time will be long, which will bring greater losses to equipment users.
Therefore, this structure does not comprehensively consider the maintenance and operation costs of the equipment in the later stage, and the structural design itself has certain defects.
Moreover, although the double tube plate provided by this technology has the function of monitoring leakage, there is no follow-up countermeasure
After a leak occurs, it can only be shut down for maintenance, resulting in production shutdown and economic losses
[0006] To sum up, the existing heat exchangers generally have the problems of poor sealing effect, poor safety and reliability, and poor temperature and pressure resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0034] See attached figure 1 , a multi-tube-sheet heat exchanger provided in this embodiment includes a shell 110 , a first head 120 , a second head (not shown in the figure) and a plurality of heat exchange tubes 130 .

[0035] The first head 120 and the second head are respectively connected to both ends of the shell 110, and a first tube sheet 140 and a second tube sheet 150 are arranged between the first head 120 and the shell 110, and the first tube sheet 140 The second tube sheet 150 is fixedly connected to the shell 110 , and the second tube plate 150 is fixedly connected to the first head 120 . The plate surfaces between the first tube sheet 140 and the second tube sheet 150 are arranged in parallel, and a notched backing ring (not shown) for connection is arranged between the first tube sheet 140 and the second tube sheet 150, so that There is a certain gap between the first tube sheet 140 and the second tube sheet 150 . The first head 120 is provided with a head fl...

no. 2 example

[0042] See attached image 3 and attached Figure 6 , the multi-tube plate heat exchanger provided in this embodiment also includes a shell 110 , a first head 120 , a second head (not shown in the figure) and a plurality of heat exchange tubes 130 .

[0043] The first head 120 and the second head are connected to both ends of the shell 110 respectively, and a first tube sheet 140 , a second tube sheet 150 and a third tube sheet 190 are arranged between the first head 120 and the shell 110 , the first tube sheet 140 , the second tube sheet 150 and the third tube sheet 190 are arranged in sequence along a direction away from the casing 110 . The edge of the third tube sheet is provided with a tube sheet flange. Plate surfaces of the first tube sheet 140, the second tube sheet 150, and the third tube sheet 190 are arranged parallel to each other. The first head 120 is provided with a head flange 121 for connection, the shell is provided with a shell flange 111 for connection, ...

no. 3 example

[0066] The multi-tube plate heat exchanger provided in this embodiment is an improvement on the basis of the second embodiment. The technical content disclosed in the first embodiment will not be repeated here, and the content disclosed in the first embodiment also belongs to this embodiment. Examples of public content.

[0067]See attached Figure 7 , a plurality of first process ports 310 communicating with the first safety chamber 308 are provided. Specifically, the first process interface 310 communicates with the first safety chamber 308 through the second signal hole 309 provided on the second collar 302 . The first safety chamber 308 is sealed under normal pressure or certain pressure to each first process port 310 , and a pressure switch or a detector of a dangerous medium is connected to a certain first process port 310 . The pressure switch can obtain the pressure change, and at the same time consider the influence of the temperature rise and fall on the pressure r...

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PUM

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Abstract

The invention relates to the field of chemical industry equipment, in particular to a multi-pipe-plate heat exchanger. The multi-pipe-plate heat exchanger comprises a shell, a first end socket, a second end socket and a plurality of heat exchange pipes. The first end socket and the second end socket are connected to the two ends of the shell. At least two pipe plates are arranged between the first end socket and the shell; each pipe plate is provided with a plurality of heat exchange pipe installing holes; and the multiple heat exchange pipe installing holes of every two adjacent pipe plates are coaxially formed in a one-to-one corresponding manner. The heat exchange pipe installing holes of the pipe plate, closest to the shell, in the at least two pipe plates are stepped holes; the heat exchange pipe installing holes of the pipe plate, most away from the shell, in the at least two pipe plates are threaded holes; and the positions of the threaded holes are provided with threaded end caps matched with the threaded holes. The multiple heat exchange pipes are installed in the corresponding heat exchange pipe installing holes and are parallel to one another in the axial direction, and the outer walls, connected with the at least two pipe plates, of the multiple heat exchange pipes are sleeved with first lantern rings and first sealing pieces. The sealing performance and the temperature-resistant and pressure-resistant performance of the multi-pipe-plate heat exchanger are effectively improved.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a multi-tube plate heat exchanger. Background technique [0002] Heat exchangers are widely used in industry to exchange heat. Heat exchangers are usually composed of heads, tube sheets, flanges, heat exchange tubes, baffles and process nozzles. In the technology related to the present invention, the existing heat exchangers mainly include metal heat exchangers, single-tube-sheet non-welded heat exchangers, and non-welded double-tube-sheet heat exchangers. [0003] Among them, the metal heat exchanger adopts welding type. Although some metals such as tantalum have good anti-corrosion performance, they have high requirements on manufacturing capacity, and welding is a technical bottleneck. At present, there are few domestic manufacturers who have mastered this technology. Therefore, the procurement cost is very high, which affects the promotion and wide application of the mark...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F9/10F28F9/013F28F9/26
CPCF28D7/16F28F9/0131F28F9/10F28F9/26
Inventor 李志典
Owner 李志典