High-temperature horizontal pump; the pump bracket is cooled by water
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High-temperature horizontal pumps, of the centrifugal pump type with a centerline support structure; at what temperature level does cooling water start to flow through the supports on the pump body? Which standards can provide this information?
Thank you, which specific clause in the standard is it?
Too lazy – SH/T3139-2004, 6.3.1; I don’t know why this requirement was removed in the 2011 version.
I’ve never seen any standard require this; API 610 doesn’t have such a provision either. We have manufactured many pumps that operate at temperatures over 300 degrees, and we have never used cooling water in their bases ；
Just because you haven’t seen it doesn’t mean it doesn’t exist
For central support, the deformation caused by high temperatures can be ignored for now. The main consideration should be the temperature limit of the lubricating oil at the drive end – too high a temperature reduces its viscosity. Next, the bearing temperature needs to be taken into account, as excessively high temperatures can lead to annealing. Finally, the temperature tolerance of the seals must also be considered. If all these values remain within acceptable ranges, then there should be no need to lower the temperature. Personal opinion.
For temperatures below 150 degrees Celsius, foot supports can be used, while for temperatures above 150 degrees Celsius, a centerline support is required. In API610, 11th edition, 6.1.17, it is specified that the cooling requirements shall be determined by the manufacturer, while the cooling method shall be agreed upon through consultation between the buyer and the seller. In the industry, foot supports are typically used at temperatures above 150 degrees, while corner cooling is employed at temperatures above 250 degrees