Vortex Flowmeter Sealing via Annular Projections

The patent replaces the ultrasonic welding process (mechanical/thermal joining method) with a mechanical interference fit system using annular projections. The projections on the detector or conduit engage with corresponding recesses to create a seal, eliminating the need for welding operations and their associated quality variability.

The annular projection structure provides self-aligning and self-sealing functionality. When the detector is inserted into the conduit, the projections automatically engage with the mating features to create the seal, requiring no additional operational steps or skilled intervention.

The patent segments the flowmeter into separable components - the detector can be independently removed from the conduit by disengaging the annular projections. This modular design allows the detector to be replaced without affecting the conduit or other components, reducing overall device complexity for maintenance purposes.

The connection system transitions from a permanent welded state to a dynamic, reversible mechanical connection. The annular projections allow the detector to be easily inserted and removed, providing operational flexibility while maintaining sealing integrity during normal operation.

The patent extracts and eliminates the o-ring component from the sealing system. Instead of using an elastic o-ring that can degrade and contaminate the fluid, the design employs a rigid or semi-rigid annular projection structure that provides sealing through mechanical interference, removing the source of contamination and degradation issues.

The sealing structure uses complementary materials on the detector and conduit surfaces that are chemically compatible with the measured fluid. By avoiding elastic polymers like o-rings, the design selects materials that do not leach contaminants or degrade in contact with aggressive chemicals, purified water, or other sensitive fluids.