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Structural stress checking method of steam generator

A steam generator and structural stress technology, applied to the types of heat exchangers, heat exchanger shells, indirect heat exchangers, etc., can solve the problems of one-sided, complicated and difficult to promote the verification process, and achieve comprehensive and accurate verification results. accurate effect

Inactive Publication Date: 2016-11-16
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current design and calibration process of structural stress is either one-sided and not accurate enough, or too complicated to be popularized in practice

Method used

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  • Structural stress checking method of steam generator
  • Structural stress checking method of steam generator
  • Structural stress checking method of steam generator

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Experimental program
Comparison scheme
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Embodiment Construction

[0020] The present application is further described in conjunction with the following examples.

[0021] 1 Case and its stress analysis ideas

[0022] 1.1 Structural decomposition

[0023] Schematic view of the main structure of the middle section of a steam generator figure 1 , ignoring the effect of the structure of the tube box at both ends, figure 1 For the connection structure between the middle flange (flexible thin tube sheet) and the shell figure 2 , the basic size is DN3400mm×68mm, and the design parameters are shown in Table 1.

[0024] Table 1 Design parameters

[0025]

[0026]

[0027] Decompose the main structure of the evaporator into four parts:

[0028] a The tube sheet 1 tube layout area supported by the tube bundle is simplified as a circular flat plate supported by the elastic foundation;

[0029] b tube bundle 3, elastic foundation;

[0030] c The flange 2 transition zone around the tube sheet 1 is equivalent to a partial annular shell;

[0...

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Abstract

The invention belongs to the technical field of steam generators in mechanical equipment engineering and particularly relates to a structural stress checking method of a shell and tube type steam generator. According to the structural stress checking method of the shell and tube type steam generator, the structure of the steam generator is decomposed into four parts, and individual stress analysis and connection edge stress analysis are conducted on each part of the four parts; in this way, a targeted algorithm can be adopted for each part, and the problem that in the prior art, a finite element method is individually adopted so that a checking process is too complicated is avoided; and besides, through the decomposition, the conditions of all the structures of the steam generator can be fully reflected, and therefore a checking result is guaranteed to be complete and accurate.

Description

technical field [0001] The application belongs to the technical field of steam generators in mechanical equipment engineering, and in particular relates to a structural stress checking method of a shell-and-tube steam generator. Background technique [0002] The basic structure of the reactor steam generator or reformer steam generator in the sulfur recovery unit of the petrochemical company is a horizontal fixed tube-sheet heat exchanger, and the folded edges of the flexible thin tube plate and the shell are welded to form a peripheral solid-support connection , its working principle is that low-pressure high-temperature flue gas or synthetic gas enters from one end of the tube box, and flows out from the other end of the tube box after heat exchange between the furnace tube and the shell-side boiler water. The temperature of the process gas on the inlet side is as high as 1450°C. The tube side of the tube sheet is equipped with a wear-resistant and heat-insulating layer an...

Claims

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Application Information

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IPC IPC(8): F28D7/16F28F9/26F28F9/02
CPCF28D7/16F28F9/02F28F9/26
Inventor 陈孙艺
Owner THE CHALLENGE PETROCHEM MACHINERY CORP
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