Discussion on the single-meter calibration problem of large compressors
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In the installation practice of large compressors, I found that single-meter alignment has always been a technical problem that troubles everyone. I checked almost all web pages and other technical books and information.* * The standard has not yet found a completely complete and reliable single-table alignment technical solution, which is difficult to achieve in driving machines (such as: Hood - 650 degrees) is a high-temperature device, and the driven machine is also a high-temperature device (such as: Compressor - 150 degrees) Single-meter alignment is almost the only optional alignment solution when performing cold-state alignment. Does anyone know how to choose the appropriate drawing ratio in single-meter alignment?: If a small grid on the graph paper represents 0.05mm, then the span of the compressor legs of 3 or 4 meters + 2 meters, the span of the hood legs of 3 meters + the distance between the wheels of about 2 meters cannot be drawn on the graph paper anyway. If a larger ratio is used, for example: 1mm/div, then the accuracy of the trend line is not enough. How do you set the appropriate drawing ratio in single table alignment? I hope experts with real practical experience in single table alignment can give me some guidance. Discussions and exchanges are welcome.
Use CAD to draw a drawing with a 1:1 ratio, and then measure it, it is very accurate. Or the abscissa and ordinate do not use the same unit. Use the larger unit for the ordinate.
The author's use of traditional methods is indeed admirable. Now you don't have to worry about running out of drawings, you can simply solve this seemingly complicated problem in an EXCEL spreadsheet. The use of CAD mentioned above complicates the problem. When it comes to CAD, many people have big heads, especially old craftsmen. The owner is estimated to be over 40 years old. Otherwise such a question would not be asked.
There is no need to use graph paper. Draw a graph based on the data to determine the mutual position of the axes, and then use similar triangles to calculate it.
The triangle algorithm used on the fourth floor is exactly the method used by the laser aligner. It is very practical for aligning equipment with a large span.
I hope that experts with real practical experience in single table correction can give me some guidance. Discussions and exchanges are welcome.
Just ask the brothers at Tomima Fertilizer, they have been using the table method to find the correct answer.
I would like to ask, when checking the timing of a single watch, why not measure the sag of the watch frame, that is, check the stiffness of the watch frame?
The original poster is great, no one has used a single table plus grid paper for many years.