Microwave flow meter

A flowmeter and microwave technology, applied in the direction of measuring flow/mass flow, liquid/fluid solid measurement, measuring devices, etc., can solve the problems of low measurement accuracy, low measurement accuracy of Doppler method, and easy-to-corrosion measurement accuracy, etc.

Inactive Publication Date: 2011-07-06
QUANZHOU HENGJIN KEBO MEASUREMENT & CONTROL TECH
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A flowmeter is an instrument that indicates the measured flow rate and/or the total amount of fluid within a selected time interval. The traditional flowmeter generally uses a contact type to measure the measured fluid. The disadvantage is that it is easy to corrode and the measurement accuracy is not high. Ultrasonic non-contact flowmeters can be divided into different types of ultrasonic flowmeters such as propagation velocity di

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
  • Microwave flow meter
  • Microwave flow meter
  • Microwave flow meter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Example: see figure 2 A microwave flowmeter, comprising a microwave signal source 1, a microwave sensor and a microwave signal processing circuit, wherein:

[0022] A microwave signal source 1, which is a microwave signal emitting device, radiates microwave signals to the fluid through a microwave sensor;

[0023] A microwave sensor, which is composed of two sensors along the axis of the fluid pipeline with a distance L and detects two flow noise signals x(t) and y(t). The two sensors are specifically the upstream sensor 21 and the downstream sensor 22;

[0024] Microwave signal processing circuit, which receives and extracts the above two signals x(t) and y(t), the cross-correlation function of the two signals is:

[0025] , where T is the integration time, that is, the measurement time, the peak value of the correlation function indicates the similarity between x(t) and y(t) in a certain time difference, and the peak point of the correlation function corresponds t...

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 microwave flow meter which comprises a microwave signal source, a microwave sensor, a signal preprocessing circuit and a signal processing circuit. In the invention, two receiving sensors respectively convert received signals into electrical signals; the two signals sequentially pass through a radio-frequency (RF) amplifying circuit, a demodulation circuit for demodulating low-frequency modulating signals, a low-pass filter (LPF) for filtering out high-frequency noise, and a low-frequency amplifying circuit; then the two signals are transferred to an analog-to-digital converter for analog-to-digital conversion, and the converted data is transferred to an upper computer; and finally, correlation algorithm processing is carried out on the two paths of received low-frequency noise signals so as to acquire the flow velocity, thereby acquiring the needed final data information such as flow quantity, accumulated flow quantity and the like. The microwave flow meter has the advantages of real-time property, high efficiency, high accuracy and the like.

Description

technical field [0001] The invention discloses a microwave flowmeter, which belongs to the manufacturing technical field of flow test devices according to the International Patent Classification (IPC), and can be used in energy (such as oil, natural gas), metallurgy, environmental protection, pulp and paper, ore, nuclear power, chemical industry, etc. Two-phase flow and multiphase flow in many industries are measured by microwave principle measurement method metering device. Background technique [0002] A flowmeter is an instrument that indicates the measured flow rate and / or the total amount of fluid within a selected time interval. The traditional flowmeter generally uses a contact type to measure the measured fluid. The disadvantage is that it is easy to corrode and the measurement accuracy is not high. Ultrasonic non-contact flowmeters can be divided into different types of ultrasonic flowmeters such as propagation velocity difference method, Doppler method, beam shift ...

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): G01F1/66
Inventor 熊焕祈桂勇锋王胜春
Owner QUANZHOU HENGJIN KEBO MEASUREMENT & CONTROL TECH
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