Small drag to draw in water for help
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1. This water pump underwent energy-saving upgrades last year, with a steam-assisted drive system added; I just asked the technician and he said that the vibration level was around 1.2 after the upgrades, but it’s now over 5. 2. The shaft of this water pump broke after the technical upgrades were carried out. 3. It was reported yesterday that about 1.2 pounds of water had been discharged, and no water has been released for two or three days. I just went to the site and checked; the drainage holes weren’t blocked. 4. Vibration is clearly felt at these support feet, but not significantly elsewhere. 5. I have checked the condition of the bearing shells, and re-measured and replaced the copper plates pressed against the back of the shells. 6. I’m not very familiar with this device, and I would like to ask why it leaks water and what causes the vibration.
When the shaft breaks, it is necessary to consider whether the operating point is within the designed operating range. I have encountered the problem of shaft breakage due to the pump operating at a low flow rate for extended periods. The designed flow rate of the pump is 160 cubic meters per hour, but the actual flow rate was less than 80 cubic meters per hour; this led to frequent shaft breaks. Things improved significantly after replacing the impeller. If it operates outside the design operating conditions, the shaft will be subjected to additional radial forces, leading to shaft failure.