Hollow Pipe Packing Structure for Long-Term Watertight Sealing
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Solution Overview
Problem
Existing pipe packing designs fail to maintain watertightness over time as leakage increases, leading to complete loss of sealing functionality.
Innovation Solution
A pipe packing with a hollow body shape and a fluid-receiving part at opposite ends, where molten rubber is injected into a mold assembly to form an outer and inner circumferential part with a gap, allowing fluid to enter and increasing pressure to maintain watertightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional packing designs are used to prevent fluid leakage, then initial sealing function is achieved, but leakage increases over time and sealing functionality is completely lost
Solution Approach 1:
The patent applies beforehand cushioning by creating a fluid-receiving part (cavity) in advance within the packing structure. This cavity is positioned to receive leaked fluid before it can escape externally, cushioning the leakage effect and maintaining sealing functionality over extended periods.
Solution Approach 2:
The patent converts the harmful effect of leaked fluid into a beneficial pressure source. The leaked fluid that enters the fluid-receiving part generates internal pressure that pushes the packing against the pipe surface, transforming leakage from a harmful effect into a mechanism that enhances sealing performance.
2Ease of manufacture
If packing structure is simplified to reduce manufacturing complexity, then ease of manufacture is improved, but ability to maintain watertightness over time deteriorates
Solution Approach 1:
The patent merges the sealing function with a fluid-receiving function into a single integrated packing structure. The hollow cavity is formed within the same rubber packing body that provides sealing, combining multiple functions without requiring separate components or complex assembly procedures.
Solution Approach 2:
The packing structure achieves multi-functionality by simultaneously providing sealing against the pipe and containing leaked fluid within the fluid-receiving part. This universal design allows one component to perform both primary sealing and secondary leakage management functions.
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 fluid-receiving part effectively captures initial leaks, preventing continuous leakage and enhancing the packing's watertightness by increasing pressure, thus maintaining sealing efficiency.
Implementation Method 1
manufacturing a pipe packing by injecting molten rubber into a mold assembly having an outer mold and an inner mold
Implementation Method 2
a fluid-receiving part, which is a space receiving fluid, is formed between the curved part and the inner surface of the body
Data Source
AI summary
The present inventive concept relates to a method of manufacturing a pipe packing inserted into a housing having a hollow body shape to prevent fluid flowing inside a pipe from leaking to the outside, the method including: manufacturing the pipe packing by injecting molten rubber into a mold assembly having an outer mold and an inner mold, wherein the pipe packing is configured as a hollow body and comprises an outer circumferential part located outside of the pipe relative thereto, opposite surfaces provided in directions toward a middle of the pipe packing at opposite ends of the outer circumferential part, and an inner circumferential part provided toward a center portion of the opposite surfaces therefrom, wherein the inner circumferential part has a gap provided therein to be divided into opposite inner circumferential parts.