Pipe Joint Gland Assembly With Stop Lip for Seal Integrity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mechanical joint pipe connections face challenges in ensuring a reliable seal, particularly due to the risk of 'bottoming out' of the pipe end within the female socket, which can lead to binding and residual shear stresses, compromising the seal quality, especially when the outer pipe surface is rough or dirty.
Innovation Solution
A gland assembly comprising a gasket with a stop lip and a gland collar, where the gasket bore receives the gland end, and the stop lip acts as a positive stop to ensure correct positioning, preventing over-insertion and enhancing seal integrity by compressing a sealing band between the pipe and the piping element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the pipe end is inserted deeply into the female socket to ensure connection strength, then the connection strength is improved, but the pipe end may bottom out causing binding and residual shear stresses that compromise seal quality
Solution Approach 1:
The gasket is pre-formed with a protrusion that extends into the female socket before assembly. This protrusion acts as a preliminary positioning feature that guides the pipe end to the correct insertion depth, preventing over-insertion and bottoming out while ensuring proper seal engagement.
Solution Approach 2:
The gasket protrusion serves as an intermediary element between the pipe end and the female socket. It mediates the interaction by providing a positive stop that prevents direct contact between the pipe end and the socket bottom, eliminating binding and shear stresses while maintaining connection strength.
2Reliability
If the pipe end insertion depth is increased to improve sealing, then seal quality is improved, but the risk of over-insertion and binding increases
Solution Approach 1:
The gasket protrusion is pre-formed with a specific geometry that defines the correct insertion depth. During assembly, the pipe end naturally engages with this protrusion, providing a self-limiting mechanism that ensures proper sealing without requiring precise measurement or complex positioning procedures.
Solution Approach 2:
The gasket protrusion provides a self-regulating insertion mechanism. As the pipe end is inserted, the protrusion automatically engages to prevent over-insertion, making the assembly process self-correcting and eliminating the need for external positioning aids or complex alignment procedures.
3Manufacturing precision
If a rigid stop mechanism is added to prevent over-insertion, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The positioning function is built into the gasket manufacturing process itself. The protrusion is formed as an integral feature of the gasket during molding or fabrication, requiring no additional components, assemblies, or adjustments. This integrates the positioning function directly into the existing gasket structure.
Solution Approach 2:
The sealing function and positioning function are merged into a single gasket component. The protrusion simultaneously provides seal engagement and insertion depth control, eliminating the need for separate positioning features or multiple components. This consolidation maintains simplicity while achieving precise positioning.
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 solution ensures a reliable and durable seal by preventing over-insertion and maintaining seal integrity, reducing the risk of binding and damage to the gasket, thereby enhancing the mechanical joint connection's performance and longevity.
Implementation Method 1
Compression of the gasket causes the gasket to engage an outer pipe surface of the pipe length, thereby forming a seal between the pipe length and the element
Data Source
AI summary
A gland assembly includes a gland defining an annular ring, the annular ring defining a first gland end and a second gland end disposed opposite from the first gland end; and a gasket, the gasket defining a first gasket end and a second gasket end, the first gasket end disposed opposite from the second gasket end, a gasket bore extending through the gasket from the first gasket end to the second gasket end, a gland collar defined at the first gasket end, the gasket bore receiving the second gland end of the annular ring.