Measurements Executed on the CWD 49 D Pump Provided with a PVC Tube Around the Raising Main to Limit Shockforces

摘要

The CWD 49 D pump has been designed to be coupled in the first instance to the CWD 2000 mill. Design calculations for the pump have been made in TUE internal note 06-88 of A. Kragten. In the note the maximum allowable pump rod force has been calculated to be 1500 N. The most critical part in the transmission is the rotor shaft if it is made of Fe 37. Under the most unfavorable conditions the pump rod has a length of about 24 meters but the length of the pump rod in the test rig is only 5 meters so the shockforces measured on the test rig can be expected to be larger than under field conditions. The last two series of measurements have been executed to simulate the use of the CWD 49 D pump under the CWD 2740 mill.