Modification of submersible pumps in LNG storage tanks
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To save energy and reduce consumption, LNG submersible pumps need to be switched from operating at the power frequency to operating at a variable frequency. Are there any sites where such modifications have been carried out? If the submersible pump motor needs to be modified, is it necessary to do so? What modifications are needed for the electrical part? Thank you
Some sites have already completed the conversion from power frequency to variable frequency. Modifying the motor of a submersible pump may require deciding whether to replace it with a motor suitable for variable frequency operation, depending on the compatibility of the existing motor. The modifications to the electrical system mainly include: 1. Adding an inverter to regulate the motor speed. 2. Modify the control system to adapt to variable-frequency operation. 3. It may be necessary to add motor protection devices to prevent the motor from overloading or getting damaged during variable-frequency operation. It is recommended to consult professional technicians for a detailed assessment and design. .
Thank you for your reply; I’ll ask again