An ultrasonic flow meter
An ultrasonic and flowmeter technology, applied in the field of ultrasonic flow detection, can solve the problems of large measurement error and difficult installation.
Active Publication Date: 2022-02-15
上海迅音科技有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to provide an ultrasonic flowmeter to solve the problems of difficulty in installing ultrasonic flowmeters in small-diameter pipelines and large measurement errors in the prior art
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 3
[0053] The difference from Embodiment 2 is that in the ultrasonic flowmeter of this embodiment, the fluid pipeline is divided into at least two parts and processed separately, and two parts include a waveguide structure 21 and a part of pipeline main body 22 .
[0054] Specifically, see Figure 4 , for the convenience of processing, the fluid pipeline 22 and the waveguide structure 21 are divided into three parts for processing, two of which include a waveguide structure 21 and a part of the pipeline body 22, and the other part only includes a part of the pipeline body 22, Then they are tightly connected together in turn, and the connection method is not specifically limited, and mechanical methods, or bonding, or welding can be used.
[0055]
[0056] The difference from Embodiment 2 is that in the ultrasonic flowmeter of this embodiment, the two waveguide structures 21 are hollow and sealed structures filled with liquid having the same or similar sound velocity as the liqu...
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
Login to View More Abstract
The invention provides an ultrasonic flowmeter, which includes two ultrasonic transducers, a fluid pipeline, an ultrasonic flow measurement circuit and a software system, the fluid pipeline includes a pipeline main body and two wave guide structures, and the pipeline main body is in the shape of a straight pipe , the two waveguide structures are arranged on the outer circumference of the main body of the pipeline with a certain distance apart. The opposite end faces of the two waveguide structures are two coupling interfaces. Road coupling connection. In this application, the ultrasonic waves emitted by an ultrasonic transducer are diffused into the liquid to be measured in the main body of the pipeline through the waveguide structure, so that the ultrasonic waves can effectively enter the liquid to be tested and can be transmitted in the main body of the pipeline to be transduced by another ultrasonic wave. Receiver, which increases the acoustic path of ultrasonic waves, and the straight tubular design of the main body of the pipeline can reduce pressure loss, improve the transport efficiency of the liquid to be tested for ultrasonic waves, reduce measurement errors, and facilitate the measurement of liquids in small-diameter pipelines. flow measurement.
Description
technical field [0001] The invention relates to the technical field of ultrasonic flow detection, in particular to an ultrasonic flowmeter. Background technique [0002] Ultrasonic flowmeters usually use the piezoelectric effect of piezoelectric materials, and use an appropriate transmitting circuit to add electrical energy to the piezoelectric element of the transmitting transducer to generate ultrasonic vibrations. Ultrasonic waves are injected into the fluid pipeline from a certain direction, then received by the receiving transducer, and converted into electrical energy by piezoelectric elements for detection. According to the principle of signal detection, ultrasonic flowmeters mainly use two types of time difference method and Doppler method. The Doppler method uses the principle of acoustic Doppler to determine the fluid flow rate by measuring the ultrasonic Doppler frequency shift scattered by the scattering body in the inhomogeneous fluid. It is suitable for the me...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/667G01F15/18
CPCG01F1/667G01F15/185
Inventor 沈西琳张宇明
Owner 上海迅音科技有限公司