Internal Pipe Cutter for Valve Box Repair
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for repairing city water valve boxes and underground pipes in frost-prone climates are labor-intensive and result in lengthy road closures and utility outages due to frost heave, which can damage the pipes and valve boxes, making them inoperable.
Innovation Solution
An internal pipe cutting system comprising a motor-driven cutting blade, a support basket with an adjustable ring, and a bearing assembly that allows for cutting and replacing the damaged upper portion of the valve box from within, minimizing the need for extensive excavation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional repair methods (digging up surrounding area, removing and replacing entire valve box) are used, then damaged valve boxes can be repaired, but labor intensity increases and road closure time extends
Solution Approach 1:
The invention divides the valve box into separable sections (upper and lower portions) and enables independent repair of the damaged upper section through internal cutting, while the lower section remains in place. This segmentation allows partial repair rather than complete replacement, significantly reducing road closure time and labor requirements.
Solution Approach 2:
The cutting tool is inserted through the existing valve box structure to perform internal cutting operations. The tool navigates through the valve box interior to reach and cut the damaged section from within, eliminating the need for extensive external excavation and pavement removal.
2Reliability
If extensive excavation is performed to repair damaged pipes, then pipe breaks can be fixed, but utility service outages are prolonged and labor requirements increase
Solution Approach 1:
Instead of approaching the pipe from the outside through excavation, the cutting tool approaches the damaged section from the inside of the pipe. This inverted approach allows the tool to cut and remove damaged pipe sections from within the existing pipe structure, eliminating the need for disruptive external excavation and maintaining external pavement integrity.
3Strength
If the entire valve box is replaced, then structural integrity is restored, but the work area must be extensively disturbed and road closures extend
Solution Approach 1:
The invention applies repair efforts locally to only the damaged portion of the valve box (the upper section) rather than the entire structure. By using internal cutting to remove and replace only the compromised upper section, the method restores structural integrity where needed while leaving the intact lower section undisturbed, minimizing overall work area disturbance.
Data Source
AI summary
An internal pipe cutting system is disclosed. The internal pipe cutting system includes an internal pipe cutter which includes a motor, an upper shaft, and a cutting blade. The internal pipe cutting system further includes a hollow cylindrical support basket which includes an adjustable ring removably mounted to the exterior surface of the support basket. Further, the internal pipe cutting system includes a bearing assembly configured to be coupled between the internal pipe cutter and the support basket.