PE Pipe Tapping Valve Quick Connect for Fast Machine Alignment
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Solution Overview
Problem
Current pipeline hot tapping, plugging, and completion systems for polyethylene pipes face inefficiencies in connecting and disconnecting machines to valves, particularly in ensuring proper alignment and securing tools for operations like drilling, plugging, and completion, which can lead to increased application time and safety risks.
Innovation Solution
A polyethylene pipe service system utilizing a cam profile with a male portion on the valve and a complementary female portion on the machine, along with a threaded collar, for quick and secure connection, allowing machines to be connected in less than a full rotation, and including features like stair-stepped channels and tabs for alignment, and a locking system to prevent valve opening until pressure is equalized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional connection methods are used for polyethylene pipe service machines, then the connection process is simple in structure, but the alignment precision and connection speed are insufficient
Solution Approach 1:
The patent employs a cam profile mechanism where a cam surface on the valve body interacts with a follower on the machine connector. As the machine is inserted into the valve, the cam profile converts the linear insertion motion into rotational motion, automatically aligning the machine with the valve bore. This curved geometric interaction resolves the contradiction by providing precise alignment through geometric constraint rather than complex adjustment mechanisms.
Solution Approach 2:
The cam profile connection mechanism is self-aligning and self-securing. When the machine is inserted into the valve, the cam and follower interaction automatically rotates the machine to the correct angular position and secures it in place without requiring manual alignment or additional fastening operations. This self-service characteristic achieves high alignment precision while maintaining relative simplicity in the connection structure.
2Productivity
If traditional connection methods are used for polyethylene pipe service machines, then the device structure is simple, but the connection time and application time are increased
Solution Approach 1:
The cam profile mechanism enables rapid connection by converting linear insertion motion into rotational positioning in a single continuous motion. The curved cam surface guides the follower through the alignment and securing process, allowing the machine to be connected to the valve in less than one full rotation. This geometric mechanism achieves high connection speed without requiring multiple discrete steps or adjustments.
Solution Approach 2:
The self-aligning cam and follower mechanism performs both alignment and securing functions automatically during the insertion process. The operator simply inserts the machine into the valve, and the cam profile automatically completes the positioning and locking, eliminating the need for manual alignment or separate fastening operations. This self-service capability dramatically reduces connection time and increases productivity.
3Reliability
If traditional connection methods are used for polyethylene pipe service machines, then the connection process is straightforward, but the connection security and reliability are compromised
Solution Approach 1:
The cam profile mechanism provides secure connection through geometric constraint. The cam surface and follower interaction creates a deterministic mechanical relationship that automatically positions the machine at the correct angle and secures it with a positive stop. This geometric locking mechanism ensures reliable connection without requiring complex multi-step fastening procedures or adjustment mechanisms.
Solution Approach 2:
The cam and follower mechanism automatically secures the machine to the valve through self-locking during the insertion process. The follower rides along the cam surface and is locked in position by the cam profile geometry, creating a secure mechanical connection that maintains reliability under operating conditions. This self-securing action achieves high connection security while maintaining relative simplicity in the mechanism design.
Data Source
AI summary
Embodiments of a polyethylene (“PE”) pipe servicing system of this disclosure may include a fusible PE fitting (F) providing a branch connection to a PE pipeline section or run (P), a valve (10) connected to the fitting and including quick connect/disconnect means, and a machine connectable to the valve including complementary quick connect/disconnect means. The quick connect means provide for full scope of operation, including cleaning, fusion, cool down, hot tap, plugging, and completion. No squeezing is used. The quick connect/disconnect means may include a first portion 20 of a cam profile and a second portion 40 of the cam profile complementary to that of the first. The machine may be a drilling or hot tapping machine (30T), a plugging machine (30P), or a completion machine (30C), and their associated tools. The valve and machine are more lightweight and faster and easier to use than the prior art.