Magnetic Suspension Pump Coupling for Leak-Free Fluid Transport
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Solution Overview
Problem
Traditional pumps face issues such as friction shear, leakage, and pollution during fluid transportation, especially when handling sensitive fluids, due to mechanical contact and dynamic seals, which are unacceptable in applications like artificial hearts and nuclear energy.
Innovation Solution
A magnetic coupling suspension pump with a magnetic suspension assembly providing stable control of the rotor's five freedom degrees and a magnetic coupler assembly for torque transmission, eliminating mechanical contact and dynamic seals, and allowing for high-efficiency fluid transport without friction or leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional pump with dynamic seal elements is used, then fluid transportation is achieved, but friction shear, leakage, and pollution occur
Solution Approach 1:
The patent replaces the traditional mechanical dynamic seal system with a magnetic coupling system. The magnetic coupler assembly generates magnetic fields that transmit rotational torque from the motor to the impeller without physical contact. This substitution eliminates mechanical friction, wear, and seal leakage, achieving friction-free and leakage-free fluid transportation while maintaining reliable torque transmission.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the motor rotor and the impeller rotor. The magnetic coupler stator and rotor assemblies generate magnetic fields that couple the two rotating components, allowing torque transmission through the fluid medium without direct mechanical contact. This intermediary approach enables power transmission while avoiding the harmful effects of mechanical seals.
2Stability of the object's composition
If magnetic suspension assembly with active control is implemented, then rotor stability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic zero power consumption control in the magnetic suspension system. The control circuit periodically adjusts the magnetic field strength and direction to maintain rotor position stability, utilizing the periodic nature of rotor oscillations. During periods when the rotor is stable, the system reduces or stops active control, achieving zero or minimal power consumption while maintaining suspension stability through passive magnetic field effects.
Solution Approach 2:
The patent dynamically changes magnetic field parameters (strength, direction, distribution) based on rotor position and operational conditions. The control circuit adjusts these parameters in real-time to maintain optimal suspension stability with minimal energy input. By changing magnetic field parameters periodically and adaptively, the system achieves stable rotor suspension while minimizing power consumption through intelligent parameter optimization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The magnetic coupling suspension pump achieves high drive efficiency, low power consumption, and complete avoidance of friction shear and leakage, ensuring reliable operation and efficient fluid transport with minimal energy loss.
Implementation Method 1
The magnetic suspension assembly generates radial uni-polar magnetic poles and magnetic fields arranged along a circumferential direction
Implementation Method 2
the magnetic suspension assembly provides a stable control of five freedom degrees for the rotor through interaction forces of the magnetic fields
Implementation Method 3
the magnetic coupler assembly generates radial periodic magnetic poles and magnetic fields arranged along the circumferential direction
Implementation Method 4
The magnetic coupler assembly provides the rotor with torque required for rotation through interaction torque of the magnetic fields
Implementation Method 5
a control circuit to generate a current in a coil of the magnetic suspension stator assembly according to the displacement of the rotor
Data Source
AI summary
A magnetic coupling suspension pump includes a stator body and a rotor. The stator body includes a magnetic suspension stator assembly and a magnetic coupler stator assembly; the rotor includes a magnetic suspension rotor assembly and a magnetic coupler rotor assembly; the magnetic suspension stator assembly and the magnetic suspension rotor assembly constitute a magnetic suspension assembly, and the magnetic suspension assembly is configured to generate radial uni-polar magnetic poles and magnetic fields arranged along a circumferential direction, resulting in that the rotor suspends; and the magnetic coupler stator assembly and the magnetic coupler rotor assembly constitute a magnetic coupler assembly, and the magnetic coupler assembly is configured to generate radial non-zero even number of periodic magnetic poles and magnetic fields arranged along the circumferential direction, resulting in that the rotor rotates.