Flange Pipe Joint Centering for Precise Reusable Assembly
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Solution Overview
Problem
Existing methods for assembling fittings with pipe pieces using flange connections are inefficient due to the need for multiple alignment steps and the inability to reuse alignment apparatuses, leading to unnecessary components remaining after assembly.
Innovation Solution
A method and apparatus utilizing a centering apparatus with centering elements and bolts to align and connect pipe pieces and fittings via flange connections, allowing for precise positioning and subsequent removal of the apparatus for multiple use, thereby simplifying the assembly process and eliminating unnecessary components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adjustment bolts with tight radial play are used to align flanges, then alignment precision is improved, but the device complexity increases and the bolts cannot be removed after assembly
Solution Approach 1:
The alignment function is segmented from the permanent connection function. Centering bolts are used only for alignment during assembly, then removed, allowing the flanges to be connected with separate connection bolts. This segmentation enables precise alignment without permanent complex alignment fixtures.
Solution Approach 2:
Alignment is performed as a preliminary action before final connection. The centering bolts establish precise alignment of flange openings, then are removed before the flanges are permanently connected with connection bolts, preventing interference with the sealing surface.
2Manufacturing precision
If adapter devices remain attached to shut-off organs after alignment, then alignment is achieved, but material waste occurs and the apparatus cannot be reused
Solution Approach 1:
The centering apparatus performs alignment as a preliminary, temporary action during assembly. After the flanges are aligned and connection holes are reciprocally positioned, the centering apparatus is removed, allowing it to be reused for subsequent assemblies without material waste.
Solution Approach 2:
The centering apparatus is discarded after use in one assembly operation but can be recovered and reused for subsequent assemblies. This contrasts with permanent adapter devices that remain attached and cannot be reused, eliminating material waste.
3Manufacturing precision
If multiple alignment steps are required for flange connections, then alignment precision may be improved, but the assembly time increases
Solution Approach 1:
The alignment function is merged with the connection hole positioning function. The centering bolts simultaneously align the flanges and establish the reciprocal position of connection holes, eliminating the need for separate alignment and positioning steps.
Solution Approach 2:
The centering apparatus serves multiple functions: it aligns flanges, positions connection holes reciprocally, and enables subsequent tightening operations. This multi-functionality reduces the number of separate alignment steps required.
Data Source
AI summary
A method for assembly of a fitting with a pipe piece using a flange connection disposes centering elements on the fitting at a distance from one another on the circumference, and centering bolts are inserted into centering openings of the centering elements and into accommodation openings of the fitting. A collar surface of the pipe piece is aligned on alignment surfaces of the centering elements. Subsequently, a loose flange ring is aligned on the centering bolts via its passage openings. The fitting and the pipe piece, which are aligned with one another, are connected with one another by the flange ring as well as connection elements, and in this regard, the centering elements and centering bolts are removed. Also a method having a similar effect, for assembly of two pipe pieces uses a flange connection, as does a centering apparatus for assembly.