Inflatable Blockage Bag Insertion Guide Tube
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Solution Overview
Problem
Existing flow passage blocking devices face challenges in inserting a blockage bag into a fluid pipe without damage, especially under uninterrupted flow conditions, due to burrs or projections on the pipe surface, leading to incomplete closure and potential damage to the bag.
Innovation Solution
A device comprising a sealing case, an insertion guide tube, a shaft with a through flow passage, and a push operation mechanism that allows the blockage bag to be inserted and expanded within the pipe while maintaining a sealed state, using an axis adjustment portion to prevent contact with pipe surfaces and ensure reliable closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the blockage bag is inserted into the internal flow passage via the branch port during uninterrupted flow, then the flow passage can be blocked without interrupting flow, but the blockage bag is likely to come into contact with burrs or projections on the pipe surface causing damage or insertion difficulty
Solution Approach 1:
The patent introduces a guide tube as an intermediary component between the blockage bag and the branch port. The guide tube's smooth inner surface acts as a protective mediator that guides the blockage bag through the branch port without direct contact between the bag and harmful burrs or projections on the pipe surface, thereby preventing damage while maintaining effective insertion
Solution Approach 2:
The guide tube is pre-installed in the branch port before the blockage bag insertion process. This preliminary action creates a protected passage in advance, ensuring that when the blockage bag is inserted during uninterrupted flow, it travels through the pre-prepared smooth channel of the guide tube rather than directly contacting the potentially harmful pipe surface
2Productivity
If the blockage bag is inserted during uninterrupted flow, then flow can be maintained, but fluid pressure acts on the blockage bag causing it to move downstream and shift from the desired blocking position
Solution Approach 1:
The guide tube serves as a mediating structure that extends into the internal flow passage and provides a controlled environment for blockage bag deployment. By confining the bag within the guide tube's protective channel, the system maintains precise positioning control even under fluid pressure, preventing downstream movement while allowing continuous flow to persist
Solution Approach 2:
The guide tube structure预先 (in advance) counteracts the downstream pushing force of fluid pressure by providing physical constraints and guidance. The bag is inserted and positioned within the guide tube before full fluid pressure acts upon it, and the guide tube's structure resists the pressure-induced movement, maintaining positioning accuracy throughout the uninterrupted flow condition
3Productivity
If the blockage bag is pressed by fluid pressure to move downstream, then continuous flow is maintained, but the blockage bag may deform or change adhesion to the inner circumferential surface reducing closing effectiveness
Solution Approach 1:
The guide tube acts as a protective intermediary that shields the blockage bag from direct exposure to high fluid pressure during insertion and positioning. By confining the bag within the guide tube's channel, the system prevents premature expansion and deformation that would occur if the bag directly contacted the high-pressure fluid, thereby maintaining proper adhesion and closing effectiveness even during uninterrupted flow conditions
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 device facilitates the insertion and reliable closure of the blockage bag within the fluid pipe, preventing damage from pipe surfaces and maintaining effective flow blockage even under fluid pressure, ensuring consistent performance.
Implementation Method 1
the blockage bag that is fixed to a leading end portion of the shaft... and that can be deformed and elastically expanded so as to increase in diameter by a diameter-increasing fluid that is supplied via the through flow passage
Data Source
AI summary
An insertion guide tube that is inserted into a sealing case and that houses a blockage bag in a reduced-size state can be moved inside the sealing case and inside a branch pipe portion along an axis of the branch pipe portion until the insertion guide tube is brought into an abutting position in which at least a part of a leading end portion of the insertion guide tube abuts against an outer surface-side peripheral edge portion of a branch port on an outer circumferential surface of a fluid pipe. In a state in which the blockage bag is located at a predetermined internal flow passage blocking position, an axis adjustment portion that can make sliding contact with an inner surface of the insertion guide tube is located in a portion corresponding to branch port in a radial direction of the fluid pipe.