Optimization method for determining basic load of multi-nozzle device
A technology based on equipment foundation and optimization method, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of non-conservation, consuming a lot of time and energy, unfavorable basic load, etc., and achieve reliable and reliable load combination. Simple operation, low error rate effect
Active Publication Date: 2012-06-27
CHINA NUCLEAR POWER ENG CO LTD
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[0007] 1) The shear force and bending moment are only applied in three possible directions or in two perpendicular directions at the same time. If the local coordinate system is not selected properly, it is difficult to ensure that the most unfavorable connection combination for the foundation load is found, resulting in unconservative As a result, it is detrimental to the security design of the device
For the selection of the local coordinate system, the existing methods do not give an effective solution
[0008] 2) The analysis of the connection load adopts the formula algorithm, which requires manual derivation and calculation
[0009] 3) After obtaining the connection load combination that is most unfavorable to the foundation load through tedious analysis work, the self-inspection process and the further review process of the reviewer also need to repeatedly analyze the accuracy of each combination method, which undoubtedly repeats the above-mentioned complicated process , will also consume a lot of time and energy
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[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0035] The flow process of the optimization method for determining the base load of multi-nozzle equipment provided by the present invention is as follows: figure 1 As shown, including the following operations and calculations:
[0036] 1. Determine the number of nozzles N and the load of each nozzle (use local coordinates to represent the nozzles)
[0037]Determine the number of nozzles of the equipment according to the equipment drawings, denoted as N; and obtain the specific nozzle load values of each nozzle according to the requirements, including axial force P, shear force V, bending moment Mb and torque Mt. by figure 2 For example, this equipment contains 9 nozzles, that is, N=9, and the specific nozzle load value of each nozzle, and these load values together with N are used as the conditions for the next calculation.
[0038] 2. Perfor...
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The invention relates to an optimization method for determining basic load of a multi-nozzle device, which belongs to the technical field of device mechanical calculation analysis and includes: exerting shearing force and bending moment at each angle one by one within a range of 360 degrees of a plane where cross sections of all connection pipes of the multi-nozzle device locate, and finally optimizing a connection pipe combination capable of leading all components of the basic load to be maximum and minimum from all possible combinations considering the positive and the negative of the exerted load. The connection pipe load combination optimized with the optimization method is more reliable, simultaneously the connection pipe load combination is automatically optimized by aid of programs, thereby being simple, convenient and easy to operate and having the advantages of high efficiency and low error rate.
Description
technical field [0001] The invention relates to a method for performing mechanical calculation and analysis on the joint load combination mode of complex multi-nozzle equipment, in particular to an optimization method for determining the basic load of multi-nozzle equipment. Background technique [0002] In the mechanical calculation and analysis of multi-nozzle (storage tank) equipment, due to the large number of nozzles on the equipment, the complex spatial position and the uncertainty of the direction of the nozzle load, the combination of nozzle loads is diverse. The nozzle load combination mode corresponding to the nozzle can significantly change the value of the foundation force (also known as the foundation load, which is an important design parameter for civil engineering). If the unfavorable effects of various combinations of connection loads on the foundation cannot be fully considered, it will be difficult to obtain the value of the foundation load corresponding t...
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IPC IPC(8): G06F19/00
Inventor 王艳苹杨林民余顺利郑修鹏刘嘉一胡雯婷刘树斌张双旺王春明
Owner CHINA NUCLEAR POWER ENG CO LTD