Valve Poppet Assembly With Discrete Sealing Surfaces
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Solution Overview
Problem
Traditional poppet assembly methods in valves result in inconsistent deformation due to thermal properties, leading to misalignment and incomplete sealing, particularly in applications involving corrosive fluids where reliable sealing is critical.
Innovation Solution
A poppet design with discrete sealing surfaces and a mechanical attachment that allows for assembly through a modular seat without heating, ensuring precise alignment and sealing contact with the valve body and seat, eliminating the need for thermal processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the poppet and seat are heated and mechanically pressed together, then the poppet can be assembled into the valve assembly, but inconsistent deformation occurs due to different thermal properties leading to misalignment and incomplete sealing
Solution Approach 1:
The patent changes the thermal parameter by eliminating the heating step entirely. The poppet is designed with a temperature-compensated geometry that allows cold assembly, avoiding thermal expansion differences between materials. This resolves the contradiction by maintaining ease of assembly through a simplified process while achieving precise sealing alignment through temperature-independent dimensional stability.
Solution Approach 2:
Instead of heating components to enable assembly, the patent inverts the approach by designing the poppet to assemble cold and achieve sealing through precise geometric matching and elastic deformation during operation. The sealing mechanism is inverted from thermal expansion-based to geometry-based, eliminating the alignment problems caused by differential thermal properties.
2Productivity
If thermal processes are used to assemble the poppet, then assembly can proceed, but deformation and misalignment occur compromising sealing performance
Solution Approach 1:
The patent changes the assembly temperature parameter from elevated to ambient, eliminating thermal processes. The poppet geometry is specifically designed to achieve proper sealing at assembly temperature, with clearance and contact surfaces optimized for cold assembly. This maintains productivity through a faster, simpler process while improving reliability by eliminating thermal deformation and misalignment issues.
3Ease of manufacture
If the poppet is press-fitted through the seat, then the assembly can be constructed, but incomplete sealing occurs due to misalignment from thermal property differences
Solution Approach 1:
The patent eliminates the thermal parameter from the assembly process, using ambient temperature assembly throughout. The poppet is designed with specific geometric parameters including tapered surfaces and controlled clearances that enable self-alignment during press-fit assembly without thermal expansion. This maintains assembly simplicity while achieving precise sealing contact alignment through temperature-stable dimensional relationships.
Data Source
AI summary
A poppet including a single-piece, unitary body defining a plurality of discrete sealing surfaces and a mechanical attachment configured to engage the body with a piston of a valve assembly.