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Lightweight Design Method of High Pressure Heater

A high-pressure heater and lightweight design technology, applied in design optimization/simulation, geometric CAD, special data processing applications, etc., can solve problems such as increased diameter and wall thickness, increased equipment specifications, equipment design and manufacturing difficulties, etc., to achieve The effect of thinning the wall thickness, reducing the wall thickness of parts, and lightweight design

Active Publication Date: 2020-08-18
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the further improvement of the pressure and temperature parameters of domestic hyper-supercritical units, the equipment specifications continue to increase, and the diameter and wall thickness of components such as tube sheets and heads increase. degree of difficulty

Method used

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  • Lightweight Design Method of High Pressure Heater
  • Lightweight Design Method of High Pressure Heater

Examples

Experimental program
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Embodiment

[0025] Such as figure 2 As shown, it is the outline structure diagram of the tube side of the high-pressure heater. Its main pressure-bearing parts include the tube plate 1, the outer side of the tube plate 1 is the water chamber head 3, and the water chamber head 3 is provided with the water outlet pipe 2 and the manhole. 4 and inlet water pipe 5.

[0026] The design method of the above-mentioned high-pressure heater is as follows:

[0027] The design pressure of a high-pressure heater used in a power plant is 40MPa, and the design temperature is 330°C. The specific steps for the design of high-pressure heaters for power plants based on the direct method based on elastic-plastic analysis are as follows:

[0028] (1) According to figure 2 The geometric model of the high-pressure heater structure used in the typical power plant shown is determined, and the finite element model is established;

[0029] (2) Give the elastic-plastic material constitutive model of each pressu...

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Abstract

The present invention discloses a method for designing a light high-pressure heater. The method is characterized in that an overall analysis model is established based on an actual high-pressure heater by using an elastoplastic constitutive model, an overall plastic collapse load of the high-pressure heater is determined through elastoplastic stress analysis by using a value analysis technology, a permitted load is determined by using a design coefficient and is used for design of the light high-pressure heater, so that the wall thickness of a conventional design part is reduced. The elastoplatic analysis method is introduced into design of the high-pressure heater; the direct method of using overall plastic deformation as a failure determining condition reflects a more accurate actual structure load in mechanical analysis, can show a more real failure process of a pressed element under the load, reduces the wall thickness of the conventional design part effectively, and makes the high-pressure heater design safer and economical.

Description

technical field [0001] The invention relates to a lightweight design method for a high-pressure heater, in particular to a lightweight design method for a high-pressure heater for a power plant using a direct method based on elastic-plastic analysis, and the technical field of high-pressure heaters for a power plant. Background technique [0002] In view of the large installed capacity and high operating parameters of domestic power plants, the design pressure of the tube side of the high-pressure heaters supporting the power plant is higher than 35MPa, which exceeds the provisions of the conventional design standard GB150. [0003] At present, the design of the tube side structure of the high-pressure heater used in the power plant mainly refers to the pressure vessel analysis and design standard JB4732, and adopts the stress classification method for analysis and design. However, with the further improvement of the pressure and temperature parameters of domestic hyper-supe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/17
CPCG06F30/17G06F30/23
Inventor 任一峰杨志刚王佳欢杨洁汤晓英杜彦楠
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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