Electromagnetic Flowmeter Lining Attachment Protrusion
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Solution Overview
Problem
Conventional electromagnetic flowmeters face challenges in preventing the lining from peeling off, especially under negative pressure conditions, which complicates the configuration and increases manufacturing costs.
Innovation Solution
The integration of protrusions with hooks on the inner surface of the measuring tube, which securely attach the lining, preventing it from being peeled off and simplifying the manufacturing process by reducing the need for complex apertures and enhancing the molding process with granular pellets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electromagnetic flowmeters use a cylindrical porous plate and tube with integral lining, then the flow measurement function is achieved, but the lining is prone to peeling off under negative pressure conditions
Solution Approach 1:
The invention divides the lining attachment system into discrete protrusions distributed on the inner surface of the tube. Each protrusion acts as an independent attachment point with a hole for securing the lining, transforming the continuous lining surface into a segmented structure that resists peeling forces more effectively under negative pressure conditions.
Solution Approach 2:
The protrusions with holes are pre-formed on the inner surface of the tube before the lining is applied. This preliminary action creates predetermined attachment points that guide and secure the lining during the molding process, ensuring reliable attachment from the outset rather than relying on the lining's own structural integrity to prevent peeling.
2Reliability
If conventional electromagnetic flowmeters use complex apertures to prevent lining peeling, then the lining attachment is improved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
Instead of using a single complex aperture system, the invention segments the attachment function into multiple simple protrusions with holes distributed on the inner surface. Each protrusion is a simple structural element that can be easily manufactured, and collectively they provide superior lining attachment compared to a single complex aperture system.
Solution Approach 2:
The protrusions are strategically positioned at specific locations on the inner surface where lining attachment is most critical. This local quality approach concentrates attachment functionality at key points rather than requiring a complex overall aperture system, simplifying manufacturing while maintaining reliability.
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
This configuration effectively prevents the lining from detaching, reduces manufacturing complexity and costs, and ensures a more stable and efficient flow measurement process.
Implementation Method 1
an excitation coil 8 generating a magnetic field in a direction orthogonal to the axial center and the line connecting the electrodes 9 and 9
Implementation Method 2
When a fluid to be measured flows in a direction orthogonal to the magnetic field, electromotive force is generated in a direction orthogonal to the magnetic field and the fluid to be measured
Data Source
AI summary
According to one embodiment, an electromagnetic flowmeter includes a tube, a lining, at least one protrusion, and a pair of electrodes. A fluid to be measured flows in the tube. The lining covers an inner surface of the tube. The protrusion protrudes from the inner surface and includes a hook for hooking the lining.