Sealing Case Segmentation for Flow-Undisrupted Pipe Work
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Solution Overview
Problem
Conventional flow-undisrupted processes face reliability issues due to strong resistance and potential damage to seal rings when inserting a valve body into a pipe, leading to complex structures and increased costs.
Innovation Solution
A flow-undisrupted apparatus with a sealing case and rubber packing system, featuring separate sealed areas and a tolerance space for the second seal ring, allowing for easy attachment and removal of boring machines and valve covers without an operation valve, reducing structural complexity and size while enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If three seal rings are used to form two sealed regions and reciprocate with the sealing case, then the need for operation valve is eliminated, but strong resistance is exerted on the existing pipe during movement and seal rings may come out of packing attachment groove
Solution Approach 1:
The sealing case is divided into a first separate case and a second separate case that are separable from each other. The first seal ring remains in the first separate case while the second seal ring can be removed with the second separate case. This segmentation allows the seal rings to be independently managed, reducing resistance during reciprocation and preventing seal rings from coming out of packing attachment grooves.
Solution Approach 2:
The second seal ring is extracted from the common packing attachment groove situation and placed in a dedicated second packing attachment groove in the second separate case. This extraction ensures the second seal ring has its own dedicated space, preventing it from coming out during operation while still maintaining the sealed region function.
2Reliability
If seal rings are pressed hard against the pipe wall during reciprocation, then sealed regions are maintained, but strong resistance is exerted on the existing pipe
Solution Approach 1:
By dividing the sealing case into separate cases with dedicated packing attachment grooves, each seal ring can be optimally positioned and pressed against the pipe wall independently. This segmentation reduces the cumulative resistance force while maintaining sealing reliability through proper distribution of sealing forces.
3Adaptability or versatility
If attachment area for cutter and valve cover are formed in the case, then boring and valve insertion are enabled, but structure becomes complicated and size increases
Solution Approach 1:
The attachment functionality is segmented between the first separate case (with first flange for cutter attachment) and the second separate case (with second flange for valve cover attachment). This segmentation allows each case to have its own dedicated attachment area, enabling versatile functionality while keeping the overall structure simpler through modularity and separability.
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 apparatus simplifies the process, reduces resistance during movement, and prevents seal ring damage, improving operational reliability and cost-effectiveness by isolating water pressure and eliminating the need for additional operation valves.
Implementation Method 1
a rubber packing for sealing a gap between the sealing case and the existing pipe
Data Source
AI summary
An apparatus including: a sealing case having a branch hole formed in a first separate case and extending in the radial direction of an existing pipe; and a rubber packing for sealing a gap between the sealing case and the existing pipe, wherein: the first separate case has a flange for attachment and removal of a boring machine; the sealing case reciprocates in a pipe axis direction; the rubber packing forms; a first sealed area surrounding a portion of the sealing case for shutting the branch hole; a second sealed area being adjacent to, sealed against, displaced from the first sealed area in the pipe axis direction, and sized so as to be able to shut the opening bored by a cutter; and a tolerance space, into which a second seal ring escapes, is formed between a packing attachment groove and the second seal ring.