Design method and device for inner and back arcs of molded lines in measuring tool of molded lines for steam passages of turbine blades
A steam turbine blade and design method technology, applied in the direction of calculation, special data processing applications, instruments, etc., can solve the problems of cumbersome operation, error-prone, slow down design efficiency, etc., and achieve high efficiency, easy popularization and use, and high reliability Effect
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specific Embodiment approach 1
[0017] Specific implementation mode one: the method for designing the back arc in the profile line of the steam channel profile of the steam turbine blade in the present embodiment includes the following steps:
[0018] Step 1. Open the steam channel type line point coordinate file;
[0019] Step 2, read the data in the steam channel type line point coordinate file line by line;
[0020] Step 3. Input the data read in step 2 into the drawing software, and use the spline curve command to draw the graph to obtain the required profile line inner arc and profile line back arc, and then obtain the gage diagram.
[0021] The present invention can edit a drawing plug-in for parametrically designing steam channel profiles through the AutoLisp function of the drawing software AutoCAD, so as to achieve the purpose of simply and efficiently designing profile measuring tools.
[0022] Usually the designed profile measuring tool graphics are shown in figure 1 , which is mainly composed o...
specific Embodiment approach 2
[0024] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is that step two is specifically:
[0025] Step 21, read and store the first data, the second data, and the third data of the second line in the steam channel profile point coordinate file, respectively as the number M of arc points in the profile line, and the profile line The number N of back arc points and the scaling value;.
[0026] Step 22. Starting from the current position, read and store the first 6 data, which are respectively used as the X coordinate of the arc of the air outlet side of the steam channel profile, the Y coordinate of the arc of the air outlet edge of the steam channel profile, and the air outlet edge of the steam channel profile The radius of the arc, the X coordinate of the arc on the intake side of the steam channel profile, the Y coordinate of the arc on the intake side of the steam channel profile, and the radius of the ar...
specific Embodiment approach 3
[0033] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the method of the present invention also includes: step 4, dimensioning the measuring tool diagram obtained in step 3, and outputting technical requirements. That is, after the gage drawing is generated, the size and other information can be automatically marked on the drawing as needed.
[0034] In addition, various parameters required for actual drawing can also be input by defining the DCL dialog box, such as image 3 As shown, the center height and clip input boxes in the DCL dialog box correspond to the attached Figure 1 Dimension A and dimension B in , these two data determine the position of the steam channel profile, and the rotation angle input box can rotate the profile line to the required angle.
[0035] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.
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