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Strength checking method based on connecting structure of nozzle and pressure shell

A pressure-bearing shell and connection structure technology, applied in the field of pressure-bearing equipment, can solve problems such as connecting pipes and openings without external loads, and achieve the effect of improving design work efficiency

Active Publication Date: 2019-02-05
HARBIN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, my country's national standard GB150 does not provide the connection pipe and opening with external load (see the attached Figure 1) Strength check and design method of reinforcement

Method used

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  • Strength checking method based on connecting structure of nozzle and pressure shell
  • Strength checking method based on connecting structure of nozzle and pressure shell
  • Strength checking method based on connecting structure of nozzle and pressure shell

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Experimental program
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specific Embodiment approach 2

[0445] Specific implementation mode 2. In combination with the drawings of the specification, based on the strength checking method of the connection structure between the connecting pipe and the pressure-bearing shell, combined with actual engineering examples, the strength and reinforcement calculation of the connection between the connecting pipe and the spherical shell are checked;

[0446] 1. Conditions

[0447] Calculated pressure Pc 6MPa, design temperature t 275°C, spherical shell material Q345R, connecting pipe material 20# forging, spherical shell inner diameter Di 3150, spherical shell inner radius Ri 1575, spherical shell outer radius Ro 1627, spherical shell wall thickness δ O53, the inner diameter of the connecting pipe is di 500, the outer diameter of the small end of the connecting pipe is do 586, the outer diameter of the large end of the connecting pipe is dm 670, and the wall thickness of the small end of the connecting pipe is δ n 43, the wall thickness of...

specific Embodiment approach 3

[1004] Specific implementation method 3. Calculation and verification of strength reinforcement connecting the connecting pipe and the cylindrical shell:

[1005] 1. The wall thickness of the connecting pipe itself should meet the requirements of internal pressure, and the thickness of the connecting pipe itself under pressure should be calculated according to GB150.3;

[1006] Applicable range of pipe wall thickness: P C t φ

[1007] The formula for calculating the wall thickness of the pipe:

[1008] 2. The wall thickness of the cylindrical shell is checked, and the thickness required for bearing pressure is calculated according to GB150.3;

[1009] The scope of application of the wall thickness of the cylindrical shell:

[1010] P C ≤0.4[σ] t φ

[1011]

[1012] 3. Check the strength of the aa section of the connecting pipe;

[1013] The strength check of the takeover aa section is consistent with the specific implementation mode two, the strength check mode of ...

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Abstract

The invention relates to a strength checking method based on a connecting structure of a nozzle and a pressure-bearing shell, belonging to the field of pressure-bearing equipment. The invention comprises a pressure-bearing shell and a pipe, wherein the pressure-bearing shell is a spherical shell, an opening is arranged on the pressure-bearing shell, the pipe is a diameter-changing pipe, the pipe is installed at the opening of the pressure-bearing shell, and the cross section of the diameter-changing part of the pipe is a-a cross section, the cross section of the connection between the nozzle and the pressure-bearing shell is b-b cross section, The cross section of the pressure-bearing shell at the joint of the pressure-bearing shell and the nozzle is c-c cross section, and that specific check method comprises the follow steps: comprising the steps of: a, checking the part a of the nozzle diameter change; b, checking the part b of the nozzle diameter change; c, checking the part b of the nozzle diameter change; A strength of section; Step b, check the cross section of the pipe at the joint of the pipe and the pressure-bearing shell to be b-b cross section; Step c, check the intensity of c-c cross section that pressure-bearing shell at the joint of the pressure-bearing shell and the nozzle. The invention solves the strength checking and design method of the nozzle with external load and the shell opening and the reinforcement thereof, and can be applied to specific design activities.

Description

technical field [0001] The invention relates to a method for checking the strength of a pipe reinforcement, which belongs to the field of pressure-bearing equipment. Background technique [0002] At present, my country's national standard GB150 does not give the connecting pipe and opening with external load (see the attached manual) figure 1 ) strength check and design method of reinforcement. This patent solves the strength checking and design method of such connecting pipes with external loads, shell openings and their reinforcements, and can be applied to specific design activities. Contents of the invention [0003] The purpose of the present invention is to solve the above technical problems, and further provide a strength checking method based on the connection structure between the connecting pipe and the pressure-bearing shell. [0004] Technical scheme of the present invention: [0005] The strength checking method based on the connecting structure of the conn...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20G06F2111/10G06F2113/14G06F2119/06
Inventor 徐树林邱砚明牟力波支南刘艳鹏武君车东光
Owner HARBIN ELECTRIC CO LTD
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