Gas Meter Dust Deposit Chamber and Tamper-Resistant Metering
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Solution Overview
Problem
Existing gas meters face issues with dust fouling and tampering due to ineffective filtering systems and vulnerable metering device positions, leading to performance degradation and safety concerns.
Innovation Solution
A gas meter structure featuring a dust deposit chamber and a mechanical filtering partition that directs gas flow to deposit dust on a bottom surface, combined with an on-off valve positioned at the outlet mouth and a metering device positioned in a secure, inaccessible location, ensuring continuous performance and safety against tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If filtering means based on static electricity or mechanical restraint are used to hold back dust particles, then dust filtration is improved, but the filter becomes saturated and dust fouling of the metering device occurs
Solution Approach 1:
The gas meter is divided into distinct functional zones: a dust collection zone with a dust deposit chamber that collects heavy particles, and a clean gas flow zone that directs filtered gas to the metering device. This segmentation prevents dust from reaching the metering device while maintaining reliable operation.
Solution Approach 2:
A mechanical filtering partition acts as an intermediary element between the dust-laden gas flow and the metering device. This partition includes a dust deposit chamber that intercepts and collects dust particles, preventing them from fouling the metering device while allowing clean gas to pass through.
2Ease of operation
If the on-off solenoid valve is positioned at the inlet mouth to intercept gas flow, then flow control is improved, but the valve is exposed to dust particles from the supply network
Solution Approach 1:
The dust deposit chamber is positioned to receive and collect dust particles from the incoming gas flow before the gas reaches the on-off solenoid valve. This preliminary dust collection action protects the valve from dust exposure while maintaining its flow control functionality.
3Object-affected harmful factors
If a mechanical filter is positioned before the solenoid valve to hold back larger particles, then particle filtration is improved, but filter saturation causes increased flow resistance and pressure difference
Solution Approach 1:
The dust deposit chamber provides a dedicated three-dimensional space for dust particle accumulation, separating the dust collection function from the main gas flow path. This dimensional separation allows dust to be collected without obstructing the clean gas flow to the metering device, maintaining stable pressure conditions.
4Ease of operation
If the metering device is positioned accessible for measurement, then measurement functionality is improved, but the device becomes vulnerable to tampering attempts
Solution Approach 1:
The metering device is nested within the box-shaped body in a protected internal location, surrounded by structural elements and positioned away from external access points. This nested configuration maintains measurement functionality while providing inherent protection against tampering attempts.
Data Source
AI summary
A gas meter structure includes a box-shaped body, an inlet mouth and an outlet mouth suited to allow the passage of a gas flow and defined on the box-shaped body, wherein inside the box-shaped body there are a metering device suited to measure one or more parameters for the determination of the gas flow rate, and a filter suited to filter the gas flow. The filter comprises a dust deposit chamber for the dust present in the gas flowing in, the dust deposit chamber having an inlet opening communicating with the inlet mouth of the box-shaped body, a dust collection bottom and a filtering outlet wall provided with through openings; the dust deposit chamber is configured in such a way that the gas flows into it through the inlet opening and flows out of it through the through openings of the filtering outlet wall.