Selector Bypass Valve for Utility Meter Maintenance and Shutoff
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Solution Overview
Problem
Existing utility metering systems face challenges when a meter needs to be taken out of service, as disrupting the utility flow can lead to safety hazards, such as gas accumulation and fire risks, making it difficult for utility companies to plan servicing without significant customer coordination.
Innovation Solution
A bypass valve system that allows for the rotation of a selector between a meter position, a bypass position, and a shutoff position, enabling fluid communication to bypass the meter for maintenance while ensuring safety by maintaining or disrupting the utility flow as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the meter is taken out of service for servicing, then the meter can be maintained or replaced, but the utility flow to the point of consumption must be interrupted causing safety hazards and service disruption
Solution Approach 1:
The system is divided into two independent flow paths: a primary passage through the meter and a secondary bypass passage. The selector valve segments the flow control function, allowing independent operation of meter servicing and flow maintenance without mutual interference.
Solution Approach 2:
The selector valve acts as an intermediary device that mediates between the need for meter servicing and the need to maintain continuous utility flow. By rotating the selector, it intermediates the flow direction to either the meter or the bypass, enabling safe meter replacement without service interruption.
2Ease of repair
If the utility flow is interrupted for meter servicing, then the meter can be accessed for maintenance, but customer service is disrupted and coordination is required
Solution Approach 1:
The bypass passage enables continuous useful action of utility flow delivery even when the meter is removed for servicing. The selector valve maintains flow continuity by redirecting it through the bypass, eliminating service interruptions and allowing uninterrupted customer supply during meter maintenance.
3Ease of operation
If a bypass system is added to maintain flow during meter servicing, then service continuity is maintained, but the device complexity increases
Solution Approach 1:
The selector valve performs multiple functions: it controls flow to the meter during normal operation, redirects flow to the bypass during meter servicing, and can completely shutoff flow when needed. This multi-functionality consolidates several control operations into a single device, reducing overall system complexity despite adding bypass capability.
Solution Approach 2:
The primary passage, secondary bypass passage, and selector valve are merged into a single integrated valve assembly. The selector combines the bypass control function with the existing meter flow control, creating a unified device that manages both flow paths without requiring separate complex control systems.
Data Source
AI summary
A bypass valve includes a base defining a base sealing surface, the base defining an upstream utility bore, a downstream utility bore, a meter inlet bore, and a meter outlet bore each extending into the base sealing surface; and a selector defining a selector sealing surface and a front surface, a primary passage and a secondary passage defined within the selector between the selector sealing surface and the front surface, the primary passage being isolated from the secondary passage, the selector defining at least one primary passage bore extending into the selector sealing surface and connected in fluid communication with the primary passage, the selector defining at least one secondary passage bore extending into the selector sealing surface and connected in fluid communication with the secondary passage.