Rotating Pipe Flange Alignment Mechanism
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Solution Overview
Problem
Improper alignment of flanges in pipe connections leads to delayed projects, increased expenses, and potential leaks due to forced connections, which existing solutions either complicate or fail to adequately address.
Innovation Solution
A modified rotating pipe flange with a smooth inner surface and an annular counterbore that allows for free rotation around the pipe, coupled with a pipe spool piece having a flared bell end and threaded spigot end, ensuring proper alignment and secure sealing even with misaligned flanges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If flanges are forced to connect when misaligned, then connection is achieved, but reliability deteriorates due to increased potential for leaking
Solution Approach 1:
The flange is designed to rotate dynamically around the pipe to accommodate misalignment, transforming a static rigid connection into a dynamic adjustable one. This allows the flange to self-align during installation, achieving proper alignment without forcing the connection, thereby maintaining both ease of operation and reliability
Solution Approach 2:
The rotating flange allows preliminary alignment adjustments before final bolting. The flange can be rotated into the correct position while still on the pipe, ensuring proper alignment is achieved before the connection is finalized, preventing leaks from misalignment
2Ease of operation
If misaligned flanges are forced connected, then connection is achieved, but device complexity increases due to hidden alignment issues
Solution Approach 1:
The rotating flange provides a simple dynamic mechanism that eliminates complex alignment procedures. Instead of requiring precise pre-alignment or complex adjustment mechanisms, the flange can be freely rotated into position, simplifying the overall connection process and reducing hidden complexity
3Reliability
If proper alignment is enforced, then reliability is improved, but productivity decreases due to project delays
Solution Approach 1:
The rotating flange allows alignment to be achieved as part of the installation process itself, rather than requiring separate alignment steps or rework. The flange can be rotated into proper alignment during the bolting operation, ensuring connection quality without slowing down productivity
Solution Approach 2:
The dynamic rotation capability allows installers to quickly adjust the flange position to achieve proper alignment, rather than requiring time-consuming manual alignment procedures or dealing with misalignment issues after installation, thus maintaining both reliability and productivity
4Ease of operation
If misaligned flanges are forced connected, then connection is achieved, but loss of time increases due to delayed leak detection
Solution Approach 1:
The rotating flange enables preliminary alignment to be achieved during installation, preventing misalignment-related leaks before they occur. This eliminates the need for future leak detection and repair, avoiding significant project delays and ensuring connection quality from the start
Data Source
AI summary
An annular ductile iron flange of nominal size has a non-threaded inner longitudinal surface defining an inner diameter that exceeds the outer diameter of a corresponding length of hubless ductile iron pipe of nominal thickness. The flange also has a basal surface with both a plurality of evenly spaced bolt holes and an annular counterbore adjacent to the inner longitudinal surface. The counterbore has a longitudinal depth slightly larger than the nominal thickness and a radial depth slightly larger than twice the nominal thickness. The flange is coupled to, and configured to rotate longitudinally around, the length of pipe. The bell end of the pipe is machined to an annular stub configured to recess into the counterbore. A threaded annular ductile-iron flange may be screwed onto the spigot end of the pipe.