Three-dimensional parametric modeling and solid forming manufacture method of steam turbine generator stator bar
A turbo-generator and parametric modeling technology, which is applied in the manufacture of motor generators, electrical components, electromechanical devices, etc., can solve problems such as difficult parametric design and modeling, backward modeling methods, and coordinate deviations, and achieve Effects with a wide range of applications, efficient modeling, and strong versatility
Active Publication Date: 2014-07-09
HARBIN ELECTRIC MASCH CO LTD
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Problems solved by technology
At present, the three-dimensional modeling of the stator bar of the turbogenerator has the following deficiencies: first, the modeling method is relatively backward, and most of them are based on the space expansion method of the plane curve, which is prone to coordinate deviation; It is difficult to achieve a smooth transition, which reduces the accuracy of modeling, and it is difficult to conduct in-depth research on finite element calculations such as wire rod structure electromagnetics and manufacturing accuracy; third, the steps to build the model are relatively complicated and have poor versatility. Difficult to form parametric design and modeling
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[0024] A three-dimensional parametric modeling and solid forming manufacturing method for a turbogenerator stator bar, the specific layout includes: (1) The basic parameters of the model include: base circle radius R 1 , cone angle Involute starting and ending radius ρ 1 , ρ 2 , starting and ending arc radius r 1 、r 2 , copper bar width, height, corner radius w 1 、h 1 , j 1 , straight length of groove and terminal L 1 , L 2 , the center-to-central diameter p of the start and end 1 ,p 2 , involute start angle, end angle Start and end arc angle s 1 , s 2 ;
[0025] (2) The three-dimensional full analytical equation of the main body trajectory of the stator bar: the main body of the stator bar is composed of three parts: the starting arc, the involute and the terminal arc, and these three parts are obtained by projecting the plane curve onto the conic surface. The space trajectory coordinate equation of its trajectory is as follows:
[0026] Beginning arc equatio...
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The invention relates to a three-dimensional parametric modeling and solid forming manufacture method of a steam turbine generator stator bar. A model established by the method is capable of truly reflecting a three-dimensional shape of the steam turbine generator stator bar, a three-dimensional fully-analytical parametric equation for a stator bar body portion is established for the first time, precise transition of bar corners is achieved by a various-torsion-angle compensation method, and the three-dimensional model of the steam turbine generator stator bar is established by the aid of CAD (computer-aided design) software. The three-dimensional parametric modeling and solid forming manufacture method of the steam turbine generator stator bar is practical, precise, capable of truly reflecting the three-dimensional shape of the steam turbine generator stator bar and easy for forming of parametric design and solid modeling of the steam turbine generator stator bar. The manufacture method is capable of achieving auxiliary processing and manufacture of stator bar lead pressing moulds, can serve as a base model for further finite element computation, and lays a good foundation for research work of precise modeling and performances of the bar.
Description
technical field [0001] The invention relates to a three-dimensional parametric modeling and solid forming manufacturing method of a stator bar of a steam turbine generator. Background technique [0002] The shape of the end part of the stator winding of the turbogenerator is complex, and its involute partial trajectory is a space curve on a conical surface. If the conical surface is expanded, the curve is an involute of a circle. This design ensures that the elevation of the end of the wire rod, the pitch and the distance between two adjacent wire rods are equal, so as to ensure equal current intensity and uniform and reliable ventilation and cooling conditions. [0003] The calculation and drawing of the stator bar of the turbogenerator has always been one of the most tedious parts in the design of the bar. Traditionally, the approximate drawing method or the calculation method of the plane involute is used to determine the size. The obtained approximate involute has low p...
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IPC IPC(8): H02K15/04
Inventor 孙永鑫满宇光赫兟胡春秀石霄峰徐远泽郑伟
Owner HARBIN ELECTRIC MASCH CO LTD