Gate Valve Curb Box Strainer for Debris Management
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Solution Overview
Problem
Valves in water supply systems can corrode and become inoperable if not regularly exercised, requiring time-consuming removal of sediment and debris from gate valve curb boxes, which is inefficient and costly, especially in emergency situations.
Innovation Solution
A gate valve curb box strainer is installed below the street-level cover to collect debris, allowing quick access and removal of sediment and debris by lifting and shaking out the strainer, reducing the need for manual digging or vacuuming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual digging or vacuuming is used to remove debris from the gate valve curb box, then complete debris removal is achieved, but time and labor cost increase significantly
Solution Approach 1:
The debris collection function is segmented from the main valve access process. A separate strainer component is introduced that can be independently installed, filled with debris, removed, and cleaned without affecting the valve itself. This segmentation allows debris removal to be performed as a separate, quicker operation rather than requiring manual digging or vacuuming of the entire curb box.
Solution Approach 2:
The strainer acts as an intermediary component between the street-level cover and the valve. It intercepts and collects debris before the debris can accumulate in the access pipe and valve area. This intermediary device simplifies the maintenance process by providing a dedicated, easily removable collection point for debris.
2Reliability
If the gate valve curb box is accessed frequently for valve exercise, then valve operability is maintained, but labor cost and time variability increase due to debris removal requirements
Solution Approach 1:
The strainer is installed in advance and continuously collects debris as water flows through the system. This preliminary action of continuous debris collection prevents debris accumulation that would otherwise require time-consuming manual removal during each valve exercise operation. The strainer does the debris collection work beforehand, so when maintenance is needed, the worker can quickly remove and shake out the strainer without extensive digging or vacuuming.
3Device complexity
If no debris collection mechanism is installed, then the system remains simple, but debris builds up in the access pipe requiring time-consuming manual removal
Solution Approach 1:
The strainer is a porous filtering structure that allows water to pass through while blocking and collecting debris. This porous design provides an effective debris collection mechanism without requiring complex mechanical moving parts or sophisticated systems. The strainer maintains system simplicity while dramatically reducing debris removal time and effort.
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
This solution saves time and labor costs by enabling quicker access to valves, improving predictability and efficiency in maintenance schedules, particularly in emergencies, and reducing the time required to exercise multiple valves.
Implementation Method 1
The design allows water to pass through the curb box strainer, while catching the sand, stones, road salt, and asphalt that naturally build up over time
Data Source
AI summary
A gate valve curb box strainer collects debris introduced through a street level cover, minimizing debris build up in the gate valve access pipe of the curb box. Water passes through the curb box strainer, while the strainer catches debris that naturally builds up over time via the street level cover. When a worker removes the cover to exercise the valve, he need only lift the gate strainer out of the access pipe and shake the debris out of it. There is no need to take extra time digging out or vacuuming out the debris. In an emergency situation such as accessing the valve for a fire hydrant or during a water/sewer main break, this could save valuable time. After the valve has been exercised, the empty gate valve curb box strainer is dropped back in place prior to covering the gate valve curb box with the street level cover.