In SW6 (also HG20569), 1. The value regarding the distance from the shaft seal to the bearing is used in the calculation of the radial displacement of the shaft diameter (already resolved). 2. And the issue of how the cooling tubes acting as baffles affect the value of the radial force on the fluid.
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The first question is whether to take the distance from the midpoint of the sealing surface to the rotating bearing of the mechanical seal, or the distance from the midpoint of the mechanical seal’s sealing surface to the frame bearing The difference between the two distance values is very large. The calculation definitely shows that the minimum value is obtained for the distance between the mechanical seal bearings. However, I’d like to hear the opinions of the experts here. (I took another close look at 20569, 6.6.7, and 6.6.8 regarding the choice between frame types with no pivot points and those with a single pivot point; it mentions that the shaft seals themselves are equipped with bearings that can serve as pivot points.) Well, this should illustrate that if a mechanical seal is used, the seal bearing can be used as a pivot for calculations. ) The second question is, regarding the radial force on the fluid, if a cooling tube is used as a baffle, should the correction coefficient for the straight baffle be selected based on the data of the cooling tube or set to 0? If selection is made based on the number of cooling tubes, don’t the subsequent internal component correction coefficients get repeated? If 0 is selected, the fluid radial force coefficient soars right away. Especially paddle mixers. I wonder how the experts handle these?
You can press F1 in the software; the introduction is quite detailed
The help section contains the information related to 20569; after all, it was created based on this standard. What I’m asking is about the values contained in 20569. In C.3.8, there is a mention of the distance from the shaft seal to the bearing, denoted as l0. My department tends to use mechanical seal bearings as the pivot point. But what I’m thinking is that the mechanical seal bearing and the sealing surface are enclosed by the mechanical seal housing to form a single unit; so the radial displacement calculated on this basis... right? Well, I’ll change the title.