Flow Meter Calibration Apparatus with Automated Piston Cylinder
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Solution Overview
Problem
Existing methods for calibrating flow meters, such as open-type Volumetric Can Provers, require manual operation and multiple cycles, which are time-consuming and prone to errors, especially for low to medium flow rates.
Innovation Solution
A novel flow meter calibration apparatus featuring a calibration cylinder with a piston that moves between stop positions, allowing for precise volume measurement by alternately filling and evacuating chambers, with a valve system to control fluid flow and a mechanism for visual indication of piston position, enabling efficient and accurate calibration without manual fluid handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation of open-type Volumetric Can Provers is used for calibration, then the apparatus is simple in structure, but the calibration process is time-consuming and prone to errors
Solution Approach 1:
The calibration system performs self-service through automated control. The processor automatically controls the pump to dispense fluid, the valve to direct flow, and the indicators to display piston positions. The system self-regulates the calibration process without requiring manual intervention for each operation step, thereby increasing productivity while maintaining operational simplicity through centralized digital control.
Solution Approach 2:
The patent replaces manual mechanical operations with an automated control system. Instead of manually operating valves, pumps, and measurement devices, the system uses a processor to electronically control these components. The mechanical piston movement is replaced with automated fluid displacement, and manual reading/recording is substituted with electronic indicators and digital display, thereby eliminating human error and increasing calibration speed.
2Measurement precision
If multiple calibration cycles are performed manually, then measurement precision can be improved, but time consumption increases significantly
Solution Approach 1:
The calibration system enables continuous operation by automatically performing multiple calibration cycles without interruption. The processor continuously controls the pump, valve, and piston mechanism to execute successive calibration operations. Fluid is continuously dispensed and measured through the automated system, eliminating the time losses associated with manual setup, operation, and measurement between cycles, thereby achieving both high precision and rapid calibration.
Solution Approach 2:
The system implements periodic calibration cycles through automated control. The processor programs the pump, valve, and piston to execute calibration operations at predetermined intervals and sequences. This periodic automated action allows multiple precise measurements to be taken in rapid succession, improving statistical accuracy while minimizing total calibration time compared to manual methods.
3Productivity
If automated piston-based calibration system is implemented, then calibration efficiency and precision are improved, but device complexity increases
Solution Approach 1:
The automated calibration system achieves multi-functionality by integrating multiple operations into a single apparatus. The processor controls the pump for fluid dispensing, the valve for flow direction, the piston for volume measurement, and the indicators for display—all within one unified system. This universal design performs calibration, measurement, control, and indication functions simultaneously, increasing productivity while managing complexity through functional integration rather than separate devices.
Solution Approach 2:
The patent merges multiple calibration and measurement functions into a single integrated apparatus. The control system combines the pump mechanism, valve assembly, piston-cylinder arrangement, and indication system into one unified device under processor control. By merging these functions rather than using separate standalone components, the system achieves high calibration efficiency while containing overall device complexity through consolidation and centralized control.
4Device complexity
If manual fluid handling and dumping is performed, then the apparatus requires minimal components, but operator error and contamination risk increase
Solution Approach 1:
The system replaces manual fluid handling operations with automated mechanical and electronic control. The processor-controlled pump dispenses fluid with precise volume control, eliminating manual pouring and measurement errors. The automated valve directs fluid flow without manual intervention, and the electronic indicators record measurements without human reading errors. This substitution of manual operations with automated systems significantly improves reliability and calibration accuracy while maintaining a manageable component count through integration.
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 apparatus provides a precise and efficient method for calibrating flow meters, reducing manual intervention and error, and allowing for quick and accurate comparison of measured volumes, suitable for low to medium flow rates.
Implementation Method 1
a piston (118) slidable within the cylinder and defining first and second chamber portions on opposite sides of the piston... allowing for precise volume measurement by alternately filling and evacuating chambers
Implementation Method 2
at least one valve (142) having an intake port in fluid communication with the intake conduit, a first flow port with a first flow conduit extending therefrom and connected to the first chamber portion for providing fluid communication therebetween
Data Source
AI summary
A meter calibration apparatus includes a fluid intake conduit, a fluid discharge conduit, and a calibration cylinder connected in fluid communication with the intake and discharge conduits, the calibration cylinder defining a chamber. The apparatus further includes a piston slidable within the cylinder and defining first and second chamber portions on opposite sides of the piston, and at least one valve having an intake port in fluid communication with the intake conduit, a first flow port with a first flow conduit extending therefrom and connected to the first chamber portion for providing fluid communication therebetween, and a second flow port with a second flow conduit extending therefrom and connected to the second chamber portion for providing fluid communication therebetween. The valve is adjustable to selectively direct flow along one of two chamber filling flow paths, the first chamber filling flow path extending from the intake conduit, through the first flow conduit, and terminating in the first chamber portion; the second chamber filling flow path extending from the intake conduit, through the second flow conduit, and terminating in the second chamber portion; the first and second chamber filling flow paths being in fluid isolation from the discharge conduit.