Multi-Layer Flow Meter Using Steel Ball Impulse
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Solution Overview
Problem
Existing open channel flow measuring devices face challenges such as low accuracy, high cost, and complex installation requirements, limiting their effectiveness in accurately measuring water flow in irrigated regions.
Innovation Solution
A multi-layer open channel portable flow measuring device based on a water impulse principle, featuring a U-shaped hollow tube with pressure and tension sensors, lightweight steel balls, and a wireless data collection system, allowing for accurate and convenient flow measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional flow measuring devices are used, then flow measurement can be performed, but the measurement precision is low and installation requirements are rigorous
Solution Approach 1:
The device divides the open channel cross-section into multiple horizontal layers, with steel balls positioned at different depths in each layer. This segmentation allows simultaneous measurement of velocity at multiple levels, improving overall flow measurement precision while simplifying installation compared to traditional single-point methods
Solution Approach 2:
The patent replaces complex mechanical installation structures with a simplified system using steel balls suspended by elastic ropes in a U-shaped tube. The mechanical complexity is reduced while maintaining measurement capability through the water impulse principle acting on the balls
2Measurement precision
If conventional flow measuring equipment is deployed, then flow data can be obtained, but the cost is high
Solution Approach 1:
The device uses inexpensive materials such as steel balls, elastic ropes, and a U-shaped tube instead of costly traditional flow measurement equipment. These simple components can be easily manufactured or replaced, significantly reducing device cost while maintaining acceptable measurement precision
Solution Approach 2:
The patent changes the measurement approach by using the water impulse principle on multiple steel balls at different depths, rather than relying on expensive ultrasonic or electromagnetic equipment. This parameter change in measurement methodology achieves cost reduction while preserving accuracy
3Measurement precision
If existing flow measuring methods are used, then instantaneous flow can be calculated, but the velocity representativeness of the measuring point is low
Solution Approach 1:
By dividing the channel cross-section into multiple horizontal layers and placing steel balls in each layer, the device captures velocity information from different depths. This segmented approach provides more representative velocity data across the entire flow section, eliminating the low representativeness of single-point measurement
Solution Approach 2:
The patent adds the vertical dimension to velocity measurement by positioning steel balls at different depths (layers) within the water column. This multi-dimensional approach captures velocity variations with depth, providing comprehensive and representative flow characterization
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 device provides precise and cost-effective flow measurement with simple installation and remote monitoring capabilities, suitable for widespread use in irrigated areas.
Implementation Method 1
a pressure sensor is arranged at a bottom center of the U-shaped hollow tube
Implementation Method 2
an end head, connected to the U-shaped hollow tube, of each lightweight elastic steel rope is provided with a tension sensor
Implementation Method 3
lightweight elastic steel ropes arranged in parallel to each other
Implementation Method 4
based on a water impulse principle
Data Source
AI summary
The present disclosure provides a multi-layer open channel portable flow measuring device based on a water impulse principle and a flow measuring method; an instantaneous water head height of a water-carrying section, namely, a water level H is measured through a pressure sensor at a bottom of a U-shaped hollow tube; at the same time, layered multi-point velocity measuring components in equidistant layout include a series of position “current meters” composed of tension sensors, hollow punching lightweight steel balls and lightweight elastic steel ropes to measure velocities V1-n of different points, n depends on the layer decided to be arranged according to a channel depth, an instantaneous flow value of the whole water-carrying section is further acquired through multi-layer flow accumulation, and with a simple structure, intelligent control, easy operation and convenient carrying, the present disclosure may further improve the flow measuring precision.