Method for calculating additional load of coal slurry pipeline caused by temperature difference and support displacement

A technology for calculating temperature and additional load, which is applied in complex mathematical operations, design optimization/simulation, geometric CAD, etc. It can solve the problem of lack of content of additional load of coal slurry pipeline, and achieve the effect of improving life and safety.

Active Publication Date: 2022-04-29
WUHAN DESIGN & RES INST OF CHINA COALTECH & ENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing design specifications for coal slurry pipeline loads are relatively deficient in content about the additional load of coal slurry pipelines caused by temperature differences and support displacements

Method used

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  • Method for calculating additional load of coal slurry pipeline caused by temperature difference and support displacement
  • Method for calculating additional load of coal slurry pipeline caused by temperature difference and support displacement
  • Method for calculating additional load of coal slurry pipeline caused by temperature difference and support displacement

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Experimental program
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Effect test

Embodiment

[0094] The bracket structure of the embodiment is fixed bracket+guiding bracket+fixed bracket, and the rod lengths are respectively 1 1 , l 2 , elastic modulus E, the inner and outer diameters of the pipe are the same. The shear force and bending moment of the basic structure are marked as F Qij and M ij , i=1,2,...,n represents the number of segments, j=1,2 represent the left and right ends of the basic structure;

[0095] a. Load caused by temperature difference, t 1 2 , t'=t 2 -t 1

[0096] Under the condition of temperature difference, the angular displacement of the rigid nodes in the overall structure is

[0097]

[0098] Angular displacement of rigid nodes in the overall structure Bending moment and shear force after:

[0099] bending moment,

[0100]

[0101]

[0102] shear force,

[0103] f Q11 =F Q12 =F Q21 =F Q22 =0

[0104] Bracket loads caused by temperature differences,

[0105] f R0 =F R1 =F R2 =0

[0106] b. The load caused by the...

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Abstract

The invention provides a method for calculating coal slurry pipeline additional load caused by temperature difference and support displacement, which comprises the following steps of: (1) determining physical parameters of a coal slurry pipeline, and calculating inertia moment of the pipeline; (2) the pipeline is divided into basic structures, and the temperature difference and the bending moment and shear force values of the basic structures under support displacement are calculated; (3) calculating the angular displacement of the integral structure rigid node under the temperature difference and the support displacement, and further calculating the bending moment and the shearing force of the basic structure in the integral structure; and (4) calculating additional normal stress, additional shear stress and additional support load according to the rod end bending moment and shear force caused by the temperature difference and support displacement. According to the method, the temperature difference and the load of the coal slurry pipeline under support displacement can be scientifically calculated, and a theoretical basis is provided for optimizing the arrangement of the coal slurry pipeline and improving the conveying safety of the coal slurry.

Description

technical field [0001] The invention relates to the technical field of pipeline structures, in particular to a method for calculating additional loads of coal slurry pipelines caused by temperature differences and support displacements. Background technique [0002] Due to the long life cycle of the coal slurry pipeline, the actual coal slurry pipeline design needs to consider the temperature difference and the bearing displacement under various conditions. In order to ensure the safe and stable operation of the coal slurry pipeline, it is necessary to reasonably predict the load of the coal slurry pipeline during design. [0003] The existing design codes for coal slurry pipeline loads are relatively deficient in content about the additional load of coal slurry pipeline caused by temperature difference and support displacement. Contents of the invention [0004] Aiming at the deficiencies of the prior art above, the present invention provides a method for calculating the...

Claims

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Application Information

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IPC IPC(8): G06F17/10G06F30/17G06F30/20G06F119/14
CPCG06F17/10G06F30/17G06F30/20G06F2119/14
Inventor 白伦田达理黄孟柳富明王珂
Owner WUHAN DESIGN & RES INST OF CHINA COALTECH & ENG GROUP
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