Method and system for calculating installation sequence of circumferential parts of rotating machine and medium

Abstract

The embodiment of the invention discloses a method and system for calculating the installation sequence of circumferential parts of a rotating machine and a medium. The method comprises the following steps of obtaining the mass sequence of the parts; obtaining the number of the fixedly arranged parts according to the proportion of the required fixed arrangement; in the parts which are not matched with the mounting positions, matching four parts with the smallest mass with the vacancies of the mounting positions in a cross-shaped symmetrical mode, and matching four parts with the largest mass with the vacancies of the mounting positions in a cross-shaped symmetrical mode; calculating a first resultant moment according to the mass of the part matched with the mounting position; randomly arranging parts which are not matched with the mounting positions and vacancies of the mounting positions, and calculating according to an arrangement result and the first resultant moment to obtain a second resultant moment; and determining whether the second resultant moment meets the preset precision requirement or not, and if yes, outputting the final part installation sequence. The embodiment of the invention can avoid full arrangement of the computer.

Description

technical field [0001] The invention relates to a method for calculating the installation order of parts, in particular to a method, system and medium for calculating the installation order of peripheral parts of a rotating machine. Background technique [0002] The installation of some parts on the circumference of the rotating machine requires dynamic balance, such as connecting bolts, blades, etc. The quality of these parts is usually inconsistent after manufacturing or maintenance, and the installation on the circumference will produce an unbalanced amount to the axis. To ensure the rotation of the rotating machine When installing, it does not produce large vibration, and it needs to be arranged in a certain order to minimize the resultant moment and internal stress during installation. [0003] Aiming at solving the problem of the installation sequence of circumferential parts on rotating machinery, the existing method one is: if the number of parts is small (such as &l...

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Problems solved by technology

[0003] Aiming at solving the problem of the installation sequence of circumferential parts on rotating machinery, the existing method one is: if the number of parts is small (such as <20), use manual calculation, this method has low efficiency and low precision, and it is difficult to find the one that meets the requirements. The installation sequence; the second method is to grind the parts so that the parts in symmetrical positions have the same quality. This method will cause irreversible damage to the parts and cannot be used for some parts with high Blades) will be polished, which will easily cause the blades to be scrapped; the third method is: use the computer to arrange the installation sequence of the parts to find the optimal value. This method requires a very large amount of calculation for a large number of parts. The 92 blades on the wheel are fully arranged to find the arrangement with the smallest resultant moment, which cannot be realized by existing computers, and the smallest arrangement does not necessarily satisfy the minimum internal stress

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