Pre-Attached Cap Nozzle for Pipeline Pressure Testing
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Solution Overview
Problem
Existing caps for plastic pipe elements used in pressure tests are complex and time-consuming to attach, with user-modified caps having inconsistent quality due to the need for manually adding a connecting piece, which complicates the pressure test process.
Innovation Solution
A cap with a manufacturer-provided connecting piece for fluid-tight closure and pressure testing, allowing for simplified attachment and ensuring consistent quality through methods like heating element butt welding or electrofusion welding, enabling efficient pressure testing in pipeline systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user manually attaches a connecting piece to the cap body, then the cap can be connected to the pressure test device, but the process becomes complex and time-consuming
Solution Approach 1:
The connection piece is pre-attached to the cap body during manufacturing by the manufacturer before delivery to the user. This preliminary action eliminates the need for users to perform the complex and time-consuming attachment process themselves, directly resolving the contradiction between ease of operation and time loss.
2Adaptability or versatility
If a user manually attaches a connecting piece to the cap body, then the cap can be used for pressure testing, but the quality and strength become inconsistent
Solution Approach 1:
The connection piece is pre-attached during factory manufacturing using standardized processes, ensuring consistent quality and strength across all caps. This eliminates the variability introduced by manual user attachment, resolving the contradiction between adaptability and manufacturing precision.
Solution Approach 2:
The cap is designed to be self-sufficient with the connection piece already attached, eliminating the need for user modification. This self-service design ensures that every cap leaves the factory with consistent, factory-controlled quality rather than variable user-applied modifications.
3Ease of manufacture
If the cap is designed without a pre-attached connection piece, then the manufacturing process is simpler, but the user must perform complex modification
Solution Approach 1:
The connection piece is attached during the initial manufacturing process rather than as a separate user-performed step. This shifts the attachment operation to the manufacturing phase where it can be integrated into the production line, maintaining ease of manufacture while eliminating device complexity for the end user.
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 cap simplifies the pressure test process by eliminating the need for user attachment of connecting pieces, ensuring consistent quality and strength, and facilitating leak testing in pipeline systems.
Implementation Method 1
by butt welding with a heating element
Implementation Method 2
by electrofusion welding
Data Source
AI summary
The invention relates to a cap (12) for at least temporary arrangement on a plastic pipe element (11), wherein the cap has a plastic cap body (13) which, when the cap is arranged on the pipe element, closes an opening of the pipe element, wherein the cap has a connection nozzle (17) arranged on the cap body by the manufacturer, which is designed for connecting a device for carrying out a pressure test.