Open AccessInfluence of high temperature degaussing on lifting capacity of linear motor reciprocating pump
Author(s) -
Cheng Jian,
Лей Ма,
Weifeng Yang,
Qing Huang,
Jing Xu,
Huamin Zhai,
Guangwen Cao
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2109/1/012009
Subject(s) - magnet , reciprocating motion , materials science , neodymium magnet , eddy current , lift (data mining) , mechanical engineering , magnetism , nuclear magnetic resonance , mechanics , electrical engineering , engineering , physics , condensed matter physics , computer science , data mining , gas compressor
The submersible linear motor reciprocating pump is a new type of artificial lift. The degaussing effect of its permanent magnet at high temperature will reduce the lifting capacity of the linear motor reciprocating pump. In this paper, the thermal stability of NdFeB permanent magnet material was studied by simulating the underground temperature and pressure conditions in a high-temperature and high-pressure reactor and combining with a Tesla instrument. The results show that NdFeB material loses its magnetism rapidly at high temperature, and the residual magnetism is proportional to the ambient temperature of the magnet. The high temperature demagnetization effect of large magnets is more serious due to eddy current loss and hysteresis loss.