Magnetic Drive Sealless Pump Steam Jacket Temperature Control
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Solution Overview
Problem
Magnetic drive sealless pumps face reliability issues when pumping corrosive and dangerous liquids that can solidify due to temperature changes, leading to potential seizure of the internal magnetic coupling.
Innovation Solution
The magnetic drive sealless pump incorporates a containment shell with a steam jacket around the outer side, which introduces steam to control the temperature of the liquid being pumped, preventing solidification and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic drive sealless pump operates without temperature control, then device complexity is reduced, but liquid solidification occurs leading to seizure of internal magnetic coupling
Solution Approach 1:
The patent applies parameter changes by introducing a steam jacket that controls the temperature parameter of the liquid being pumped. The steam jacket maintains the liquid temperature above its solidification point, preventing the liquid from turning solid and seizing the magnetic coupling, thus resolving the reliability issue without requiring complex active heating or cooling systems
Solution Approach 2:
The steam jacket acts as an intermediary element between the pump components and the liquid being pumped. It provides thermal insulation and temperature control, creating a controlled thermal environment that prevents solidification while maintaining the simplicity of the magnetic drive mechanism
2Reliability
If steam jacket is added to control temperature, then liquid solidification is prevented, but device complexity increases
Solution Approach 1:
The patent utilizes phase transitions by employing steam (gaseous phase) in the steam jacket to transfer thermal energy to the liquid being pumped. The steam condenses on the outer surface of the containment shell, releasing latent heat that maintains the liquid temperature above its solidification point, providing effective temperature control through a natural phase change process
Solution Approach 2:
The pump is segmented into distinct thermal zones: the containment shell enclosing the magnetic drive components is separated from the external environment by the steam jacket. This segmentation allows independent temperature control of the pump internals, ensuring that the liquid and magnetic components remain within safe operating temperature ranges while maintaining overall system simplicity
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 steam jacket effectively maintains the liquid in a fluid phase, preventing solidification and thereby improving the reliability and operational stability of the magnetic drive sealless pump.
Implementation Method 1
a steam jacket over an outer side of the containment shell, which introduces steam to control the temperature of the liquid being pumped
Implementation Method 2
the steam jacket effectively maintains the liquid in a fluid phase, preventing solidification
Implementation Method 3
an outer magnetic ring arranged around an exterior of the containment shell, the outer magnetic ring comprising coaxially arranged inward facing permanent magnets that are attracted to the coaxially arranged outward facing permanent magnet of the inner magnetic ring
Data Source
AI summary
A magnetic drive sealless pump may comprise a pump casing, assembly bearing housing, and a frame having a first open end coupled to the pump casing and a second open end coupled to the bearing housing. The frame is provide over an outer magnetic ring and a containment shell, and the frame comprises a steam inlet and a steam outlet. The steam inlet is positioned proximate to the containment shell and the outer magnetic ring to permit introduction of steam to an exterior of the containment shell and the outer magnetic ring. The bearing housing my comprise a second steam outlet arranged between a dry gas seal and a bearing isolator for draining water accumulation.