Segmented Valve Coupling With Deformable Lobes for Fast Pipe Joining
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Solution Overview
Problem
Existing mechanical pipe couplings require disassembly and reassembly for installation, which is time-consuming and inefficient, especially when valves are involved, as they necessitate two couplings per valve position.
Innovation Solution
A combination valve and coupling design where segments are pre-assembled in a spaced configuration, allowing for the insertion of pipe elements without full disassembly, with circumferentially arranged projections and lobes that deform to secure the valve body and provide a fluid-tight seal, and adjustable connection members for end-to-end attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical couplings are designed with continuous arcuate projections to engage pipe elements, then the coupling provides secure mechanical restraint under high pressure, but the installation process requires complete disassembly and reassembly of multiple segments
Solution Approach 1:
The coupling is divided into multiple segments that can be independently positioned and attached to pipe elements. Each segment has projections that engage with the pipe element surface, allowing the coupling to be assembled in a distributed manner rather than requiring complete disassembly and reassembly of a single unit.
Solution Approach 2:
The segments are pre-positioned around the pipe element with their projections already aligned to engage the pipe surface. The ring gasket is pre-placed on the pipe element before the segments are attached, eliminating the need to disassemble and reassemble the entire coupling during installation.
2Adaptability or versatility
If a valve is installed within a pipeline requiring two separate couplings, then the valve function is achieved, but the installation complexity and time are increased
Solution Approach 1:
The coupling and valve are merged into a single integrated unit. The valve is positioned within the central space defined by the coupling segments, eliminating the need for separate couplings on either side of the valve. This integration reduces the number of components and simplifies the installation process.
Solution Approach 2:
The integrated coupling-valve unit performs multiple functions simultaneously: it provides mechanical restraint for the pipe element, creates a fluid-tight seal using the ring gasket, and controls fluid flow through the valve. This multi-functionality eliminates the need for separate coupling and valve installation steps.
3Adaptability or versatility
If ring gasket installation requires lubrication and stretching to accommodate pipe elements, then the gasket can be installed on various pipe configurations, but the installation process becomes more time-consuming and requires additional handling steps
Solution Approach 1:
The ring gasket is pre-placed on the pipe element before the coupling segments are attached. This preliminary positioning allows the gasket to be properly seated in the groove or on the pipe surface without requiring subsequent stretching or manipulation during the coupling assembly process.
Solution Approach 2:
The ring gasket is designed to self-position and self-seal when the coupling segments are attached. The projections on the segments engage the pipe element surface and compress the gasket into place, eliminating the need for manual stretching or additional handling steps that would otherwise be required.
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
This design enables efficient installation of pipe elements by eliminating the need for full disassembly and reassembly, reducing installation time and effort while ensuring a secure and leak-proof connection.
Implementation Method 1
first and second lobes positioned on opposite sides of the ring. A portion of the first lobe surrounds a first portion of the outer surface of the valve body. The first projections engage the first portion of the first lobe. A portion of the second lobe surrounds a second portion of the outer surface of the valve body. The second projections engage the second portion of the second lobe.
Data Source
Figure 1~2A
Figure 2
Figure 3
AI summary
A valve and coupling for joining pipe elements has a valve body captured in a central space defined by a plurality of coupling segments attached to one another end to end. The inner surface of the valve body defines a bore. A liner on the inner surface surrounds the bore and forms a seal with a valve closing member. Circumferentially arranged projections on the segments engage and center the valve body within the central space. The liner has lobes that extend axially in opposite directions. The lobes are compressed between the segments and the pipe elements to form a fluid tight seal when connection members are tightened to draw the segments toward the central space and into engagement with the pipe elements.