Replaceable Seal Housing in Flexible Pipe End Fittings
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Solution Overview
Problem
Pipe segments in fluid flow systems are susceptible to wear due to corrosion and abrasion from fluids and impurities, leading to reduced useful life and high replacement costs.
Innovation Solution
End fittings with a permanently coupled end casing and a removably coupled seal housing, where the seal housing can be replaced without removing the end casing, providing a sealing interface and protecting the pipe segment from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the end fitting is designed as a single integrated component, then the structure is simple and easy to manufacture, but the entire end fitting must be replaced when the seal housing wears out, increasing labor and cost
Solution Approach 1:
The end fitting is divided into two distinct components: an end casing that remains permanently attached to the pipe segment, and a seal housing that can be removed and replaced independently. This segmentation allows the seal housing to be replaced without replacing the entire end fitting, reducing labor and cost when only the sealing components wear out.
2Reliability
If the seal housing is permanently coupled to the end casing, then the structure is more robust and reliable, but the seal housing cannot be replaced without replacing the entire end fitting
Solution Approach 1:
The coupling between the end casing and seal housing transitions from a permanent static connection to a dynamic connection that allows for controlled disassembly and reassembly. The seal housing can be securely attached during operation to ensure reliability, yet can be removed when maintenance is needed, enabling component replacement without replacing the entire assembly.
3Ease of repair
If the end fitting is designed for easy replacement, then maintenance is simplified, but the labor and cost to replace the entire end fitting when only the seal housing wears out increases
Solution Approach 1:
By segmenting the end fitting into a permanent end casing and a replaceable seal housing, the design enables selective replacement of only the worn seal housing components. This reduces the labor time and cost associated with replacement operations, as the end casing and its attachment to the pipe segment remain in place and do not need to be removed or reinstalled.
4Device complexity
If a traditional end fitting design is used, then the structure is simple, but corrosion and abrasion from fluids and impurities reduce the useful life of the pipe segment
Solution Approach 1:
The segmentation of the end fitting into permanent and replaceable components allows the seal housing to be replaced when it becomes corroded or worn from exposure to fluids and impurities. This extends the useful life of the overall pipe segment assembly, as the end casing and pipe segment connection remain intact while only the exposed seal housing components need periodic replacement.
Data Source
AI summary
A pipe assembly includes a flexible pipe segment and at least one end fitting. The at least one end fitting includes an end casing coupled to the flexible pipe segment and a seal housing removably coupled to the end casing. The end casing defines a seal housing-receiving bore extending longitudinally through the end casing, and the seal housing is positioned within the seal housing-receiving bore. The seal housing defines at least one seal bore extending from an axially distal surface of the seal housing, and one or more sealing elements are seated in a respective one of the at least one seal bore. The end casing is couplable to a counterpart fitting, and the seal housing and/or the one or more sealing elements are configured to define a sealing interface with the counterpart fitting.