River channel two-dimensional flow velocity and flow measuring system and method

A technology of flow measurement and flow velocity, which is applied in the field of two-dimensional flow velocity and flow measurement systems in rivers, can solve the problems of inability to guarantee the real-time accuracy and validity of the measured flow data, and achieve the effects of convenient installation, commissioning and maintenance, improved measurement data, and small size

Active Publication Date: 2018-01-26
HANGZHOU KAIHONG FLUID TECH CO LTD
View PDF6 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies in the prior art and provide a two-dimensional flow rate and flow measurement system and method for rivers. The system is based on the two-dimensional flow rate ADCP product developed by phased array scanning technology, and utilizes underwater mechanical rotating equipment and acoustic The combined

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • River channel two-dimensional flow velocity and flow measuring system and method
  • River channel two-dimensional flow velocity and flow measuring system and method
  • River channel two-dimensional flow velocity and flow measuring system and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0159] When Example 1 is nitSize=0.1,

[0160] The relevant parameters of the acoustic Doppler flow meter are set as follows:

[0161] MinRange=0.5; the nearest range, unit: m

[0162] MaxRange=15; maximum range, unit: m

[0163] ADCPdepth=0.5; layer thickness measured by acoustic Doppler flow meter, unit: m

[0164] ADCPNoP=50; the number of layers measured by an acoustic Doppler flow meter

[0165] Adjustable factor:

[0166] Manning = 0.05; Manning roughness coefficient;

[0167] Karman=0.41; Karman's constant=0.41

[0168] mExp = 6; empirical constant m

[0169] Gravity=9.8; acceleration of gravity

[0170] Beta = 1; 1-10 anisotropic turbulence constant

[0171] Init.ADCPPosition=[6,2.8]; Acoustic Doppler flow meter installation position [distance from the 0 coordinate point of the section to the depth of the water], unit: meter

[0172] Obtain the measured map as Picture 11 Shown.

Example Embodiment

[0173] Example 2 is when nitSize=0.5,

[0174] The relevant parameters of the acoustic Doppler flow meter are set as follows:

[0175] MinRange=0.5; the nearest range, unit: m

[0176] MaxRange=15; maximum range, unit: m

[0177] ADCPdepth=0.5; layer thickness measured by acoustic Doppler flow meter, unit: m

[0178] ADCPNoP=50; the number of layers measured by an acoustic Doppler flow meter

[0179] Adjustable factor:

[0180] Manning = 0.05; Manning roughness coefficient;

[0181] Karman=0.41; Karman's constant=0.41

[0182] mExp = 6; empirical constant m

[0183] Gravity=9.8; acceleration of gravity

[0184] Beta = 1; 1-10 anisotropic turbulence constant

[0185] Init.ADCPPosition=[6,2.8]; Acoustic Doppler flow meter installation position [distance from the 0 coordinate point of the section to the depth of the water], unit: meter

[0186] Obtain the measured map as Picture 12 Shown.

[0187] There are two sets of examples for the effects of flow rate simulation and assimilation:

[0188] Exam...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a river channel two-dimensional flow velocity and flow measuring system. The system comprises an acoustic Doppler current profiler, a mechanical rotation driving device, an embedded control and data acquisition device and a host computer, the host computer is connected with the embedded control and data acquisition device, the embedded control and data acquisition device isconnected with the mechanical rotation driving device, and the mechanical rotation driving device is connected with the acoustic Doppler current profiler. A river channel two-dimensional flow velocity and flow measuring method includes following steps: (a) flow velocity scanning; (b) flow velocity calculation; and (c) flow calculation. According to the system, the design of the combination of theunderwater mechanical rotation device and the acoustic Doppler current profiler is employed, conventional one-dimensional flow velocity profile data is extended to two-dimensional scanning flow velocity data, and the calculation fitting of the river channel flow is performed by employing a calculation model of fluid dynamics so that more accurate flow data is obtained, and the problem that the conventional measuring system cannot guarantee timeliness, accuracy and validity of measured flow data is solved.

Description

technical field [0001] The invention relates to a two-dimensional flow velocity and flow measurement system and method of a river channel. Background technique [0002] The traditional ADCP generally adopts a fixed installation on the shore and emits sound waves horizontally to obtain one-dimensional flow velocity profile data. This flow velocity data is called the index flow velocity. The index flow velocity is poorly representative of the average flow velocity of the entire river section, and when the water level changes, the relationship between the index flow velocity and the average flow velocity of the section will change fundamentally, and the relationship between the two must be recalibrated to ensure the data availability of the flow measurement system , which will lead to a large consumption of manpower and material resources, and cannot guarantee the real-time accuracy and validity of the measured flow data. In addition, due to floods, siltation and other reasons...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01P5/24G01F1/66
Inventor 杨波方雷郑豪锋
Owner HANGZHOU KAIHONG FLUID TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap