CN207066523U - A kind of Ultrasonic Wave Flowmeter - Google Patents
A kind of Ultrasonic Wave Flowmeter Download PDFInfo
- Publication number
- CN207066523U CN207066523U CN201721087368.1U CN201721087368U CN207066523U CN 207066523 U CN207066523 U CN 207066523U CN 201721087368 U CN201721087368 U CN 201721087368U CN 207066523 U CN207066523 U CN 207066523U
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- ultrasonic
- measuring section
- flow
- ultrasonic wave
- flowmeter
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Abstract
The utility model discloses a kind of Ultrasonic Wave Flowmeter.Inlet and outlet section of the present utility model uses cross-like, increase flow channel length, enable air-flow from ultrasonic flowmeter import to measuring section smooth transition, entry shape is pipe, measuring section is shaped as flat, runner is divided into two layers up and down by flow deflector in measuring section, respectively has a pair of ultrasonic transducers, two pairs of cross-shaped settings of ultrasonic transducer upper and lower two layers.The utility model adds measurement duct length, and carries out runner layered shaping in measuring section increase flow deflector, can so stablize flow velocity, reduce the noise jamming that fluid fluctuation is brought.
Description
Technical field
The utility model belongs to natural gas field, is related to a kind of Ultrasonic Wave Flowmeter, changes for fluid course
Enter.
Background technology
The accuracy of natural gas flow measurement and the economic benefit of gas enterprise are closely bound up, as China's natural gas is in people
Extensive application in people's livelihood work production, Ultrasonic Wave Flowmeter are also used widely.
Ultrasonic Wave Flowmeter carries out the measurement of gas flow using speed difference method.In the measurement of gas ultrasonic flowmeter
One or more pairs of ultrasonic transducers are installed on pipeline section（Sensor）, by taking one pair of which ultrasonic transducer as an example, ultrasonic transducer is handed over
For launching and receiving ultrasonic wave, using ultrasonic detection technology, the sound forward and inversely propagated along air-flow by measuring ultrasonic wave
Speed difference calculates gas flow rate, and the operating mode flow of gas in pipelines flowing is conversed according to known measurement pipe diameter.It is super
The advantages that acoustic wave flow meter has simple in construction, service life length, and flow losses are small, it is each to be just widely used in national product
Neighborhood.
Traditional ultrasonic flowmeter is easily by the installation effect of speed field distribution, pipeline manufacturing process, ultrasound in gas
The channel gain that the small propagation path deflection brought of the ratio between energy attenuation, the velocity of sound and flow velocity in body, gas pressure wave zone come
Change, the interference of the factor such as the acoustic interference brought of gas pressure regulating apparatus, so as to cause measurement and unstable inaccurate.
The content of the invention
The purpose of this utility model is the ultrasonic wave being directed in current Ultrasonic Wave Flowmeter easily in transmitting procedure
Generation energy attenuation, the deficiencies of the channel gain that gas pressure wave zone comes, there is provided a kind of runner improve after gas ultrasound
Low.
Inlet and outlet section in the utility model uses cross-like, increases flow channel length, air-flow is entered from ultrasonic flowmeter
Mouth arrives measuring section energy smooth transition, and entry shape is pipe, and measuring section is shaped as flat, will by flow deflector in measuring section
Runner is divided into two layers up and down, respectively has a pair of ultrasonic transducers, two pairs of cross-shaped settings of ultrasonic transducer upper and lower two layers.
The utility model lifts instrument function by adjusting airflow path, the technical advantage having compared with prior art
It is：
1. the mode that the utility model intersects using entrance and exit, the purpose for the arrangement is that lengthening runner, make gas
Body has cushion space in runner, and then flows when passing the gas through measuring section more stable.
2. measuring section is divided into two layers, there is flow deflector separation centre, is fluctuated up and down the purpose for the arrangement is that reducing fluid, makes gas
Stream is more steady, the interference of noise during so as to reduce ultrasound signal receipt.
3. two pairs of ultrasonic transducers are used, cross-like arrangement, the purpose for the arrangement is that the area for passing through ultrasonic signal
Domain is more extensive, the average speed that the more average value of multiposition gas flow rates flows closer to real gas in pipe, can be with
Improve measurement accuracy.
4. this structure can be applied to the ultrasonic flowmeter of each size, it is possible to achieve throughput measurement accuracy is more
Height, repeatability is more preferable, so as to lift the stoichiometric level of energy trading.
Brief description of the drawings
It is the front view of ultrasonic flowmeter shown in Fig. 1；
It is the upward view of ultrasonic flowmeter shown in Fig. 2；
It is the velocity profile figure of ultrasonic flowmeter upper strata ultrasonic transducer simulation result shown in Fig. 3；
It is the velocity profile figure of ultrasonic flowmeter lower floor ultrasonic transducer simulation result shown in Fig. 4.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in figure 1, ultrasonic gas flowmeter in the present embodiment by straight length 2, bend loss 1 and measuring section 3 and
Flow deflector 6 and two pairs of ultrasonic transducers 4,5 are formed.Fluid enters curved pipe 1 by straight pipeline 2 and enters back into measuring section 3, water conservancy diversion
Fluid is divided into two layers by piece 6, and two pairs of ultrasonic transducers intersect installation, and flow measurement is carried out to gas, then by bend pipe 1, straight tube 2
Fluid is exported.
The diameter of main pipeline porch in Fig. 1E=30mm, the thickness of measuring section 3D=10mm, the thickness of flow deflector 6F=2mm；
The length of measuring section 3 in Fig. 2C=60mm, widthA=30mm；The installation site diameter of ultrasonic transducerB=2mm；For current
Size, the ∠ α in figure, which are more than 20 degree, could meet design requirement.
It can be seen from simulation result Fig. 3 and 4, cornerwise polar plot of bilevel ultrasonic transducer is slightly poor
Different, below that in contrast can be more more stable, but by being contrasted with other ultrasonic flowmeters, the utility model
It is undoubtedly metastable for entirety.
The problems such as being relatively large in diameter, flow velocity is quickly, flowed fluctuation is larger be present in the ultrasonic gas flowmeter of straight pipeline measurement,
It is that noise is very strong to cause ultrasonic signal collection, disturbs flow signals, makes later stage processing of circuit difficult, or even measure rill
Amount does not reach required precision.It is in contrast, design increase measurement duct length of the present utility model, and increase water conservancy diversion in measuring section
Piece carries out runner layered shaping, can so stablize flow velocity, reduces the noise jamming that fluid fluctuation is brought；Also use alliteration simultaneously
Road intersects measurement, adds measurement area, contrasts those using monophonic or using the super of unidirectional two-channel measurement
Sound wave gas flowmeter, the result measured by the utility model can be relatively reliable, so as to more accurately measure present flow rate, most
Ultrasonic gas flowmeter is set to improve measurement accuracy eventually.
Claims (4)
1. a kind of Ultrasonic Wave Flowmeter, its spy is：Inlet and outlet section use cross-like, increase flow channel length, make air-flow from
Ultrasonic flowmeter import is pipe to measuring section energy smooth transition, entry shape, and measuring section is shaped as flat, in measuring section
It is interior to be divided into runner two layers up and down by flow deflector, respectively there are a pair of ultrasonic transducers, two pairs of ultrasonic transducers upper and lower two layers
Cross-shaped setting.
A kind of 2. Ultrasonic Wave Flowmeter according to claim 1, it is characterised in that：The diameter of described entry shape
For 30mm.
A kind of 3. Ultrasonic Wave Flowmeter according to claim 2, it is characterised in that：Described measurement segment length is
60mm, width 30mm, thickness 15mm, flow deflector thickness are 2mm.
A kind of 4. Ultrasonic Wave Flowmeter according to claim 3, it is characterised in that：Axle where described measuring section
Axis institute where line and inducer or inducer is at an acute angle to be more than 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721087368.1U CN207066523U (en) | 2017-08-29 | 2017-08-29 | A kind of Ultrasonic Wave Flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721087368.1U CN207066523U (en) | 2017-08-29 | 2017-08-29 | A kind of Ultrasonic Wave Flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207066523U true CN207066523U (en) | 2018-03-02 |
Family
ID=61514293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721087368.1U Active CN207066523U (en) | 2017-08-29 | 2017-08-29 | A kind of Ultrasonic Wave Flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207066523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340022A (en) * | 2017-08-29 | 2017-11-10 | 中国计量大学 | Ultrasonic Wave Flowmeter |
-
2017
- 2017-08-29 CN CN201721087368.1U patent/CN207066523U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340022A (en) * | 2017-08-29 | 2017-11-10 | 中国计量大学 | Ultrasonic Wave Flowmeter |
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