CN108562341A - A kind of reflective multichannel ultrasonic gas flowmeter runner - Google Patents
A kind of reflective multichannel ultrasonic gas flowmeter runner Download PDFInfo
- Publication number
- CN108562341A CN108562341A CN201810640603.6A CN201810640603A CN108562341A CN 108562341 A CN108562341 A CN 108562341A CN 201810640603 A CN201810640603 A CN 201810640603A CN 108562341 A CN108562341 A CN 108562341A
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- gas
- ultrasonic
- reflective
- direct piping
- gas flowmeter
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- 230000001413 cellular effect Effects 0.000 claims description 16
- 230000001186 cumulative effect Effects 0.000 claims description 5
- 210000003127 knee Anatomy 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000002411 adverse Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000739 chaotic effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention provides a kind of reflective multichannel ultrasonic gas flowmeter runners, including direct piping, the direct piping is equipped with input end and outlet end；It is equipped with several ultrasonic transducer groups on direct piping, leans on input end side to be equipped with gas rectifier structure in direct piping；The gas rectifier structure includes the gas channel that cross section is in honeycomb structure, and gas channel is axial whole parallel with direct piping.The beneficial effects of the present invention are：On the one hand it can be applicable in shorter direct piping, reduce the occupancy volume of gas flowmeter runner, on the other hand but also ultrasonic measurement is more stable accurate.
Description
Technical field
The present invention relates to combustible gas metering arrangement technical fields, and in particular to the structure optimization of gas flowmeter.
Background technology
The basic principle of existing reflecting type ultrasonic gas flowmeter is time difference method, passes through installed on flow path wall and gas
The ultrasonic sensor that flow direction forms an angle measures ultrasonic signal, the fair current time td propagated between ultrasonic sensor
With adverse current time tu, airflow rate information V (Δ t), but application can be obtained by the difference DELTA t of fair current time and adverse current time
People by the study found that due to air-flow in gas flowmeter there are turbulent flow phenomenon, fair current that ultrasonic sensor measures
The difference of time and adverse current time are there are certain error or there is fluctuation, and then influence the whole of gas flow and measure essence
Degree.
Invention content
For the deficiency in the presence of the prior art, the present invention provides a kind of reflective multichannel ultrasonic gas flows
Runner is counted, the measurement accuracy error come its object is to solve gas disturbed belt.
To achieve the above object, present invention employs the following technical solutions：
A kind of reflective multichannel ultrasonic gas flowmeter runner, including direct piping, the direct piping be equipped with into
Mouth end and outlet end；It is equipped with several ultrasonic transducer groups on direct piping, leans on input end side to be equipped with gas in direct piping
Body rectifier structure；The gas rectifier structure includes the gas channel that cross section is in honeycomb structure, gas channel and straight pipe
Road is axial whole parallel.
Further, the input end of the direct piping is equipped with guide ring, and the guide ring is integrally conical or tubaeform,
And the cross section of guide ring is streamlined.
Runner front end carries guide ring and gas rectifier structure so that the anisotropic chaotic flow rectification of runner front end
For with the axial parallel effective flowing of runner, rectification, gas rectifier structure rear end can be carried out to the fluid of front end more large Reynold number
LAMINAR WAKE it is small, it is easier to eliminated in compared with short and straight pipe section, on the one hand can be applicable in shorter direct piping, reduce gas stream
The occupancy volume of gauge runner, on the other hand but also ultrasonic measurement is more stable accurate.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment.
Fig. 2 is the schematic cross-section of embodiment.
Specific implementation mode
The technical solution in the present invention is further illustrated with reference to the accompanying drawings and embodiments.
A kind of reflective multichannel ultrasonic gas flowmeter runner, as shown in Figure 1, comprising direct piping 1, it is described straight-through
Pipeline 1 is equipped with input end and outlet end；It is equipped with several ultrasonic transducer groups on direct piping 1, is additionally provided with temperature sensor
With pressure sensor；The input end of the direct piping 1 is equipped with guide ring 2, and the guide ring 2 is integrally conical or tubaeform,
And the inner wall of the longitudinal section of guide ring 2 is streamlined, can effectively reduce gas and become the pressure loss of hour in bore, and keep flowing
The Steady Flow state of body；In direct piping 1 gas rectifier structure 3 is equipped with by input end side；The gas rectifier structure 3 wraps
It is in the gas channel of honeycomb structure containing cross section, gas channel is axial whole parallel with direct piping；Bee described in gas passage
Cellular unit lattice section includes the one or more of which of hexagon, quadrangle, pentagon, triangle in nest shape structure, so that
Obtain the shape design that gas rectifier structure 3 adapts to 1 inner section of different direct pipings；The outer rim of the gas rectifier structure 3 with it is straight
The internal diameter threaded a pipe is that interference fit connects, and matching gas thus can be designed according to the flow passage structure of existing gas flowmeter
Body rectifier structure 3 is installed, and the turbulence effect of existing gas flowmeter is improved.
The gas rectifier structure 3 meets L >=10DH；Wherein L is 3 length of gas rectifier structure, DHDescribed in gas channel
The hydraulic diameter of cellular unit lattice in honeycomb structure, and be the characteristic length of non-pipe flow；To effectively by turbulent gas
Stream rectification is the straight-through air-flow of smooth-going；The hydraulic diameter D of the cellular unit latticeH=4A/P, wherein A are the mistake of cellular unit lattice
Flow area, P are the wetted perimeter of cellular unit lattice；The gas rectifier structure needs to meet：D >=50a, wherein d is described in gas channel
The inscribed circle diameter of cellular unit lattice in honeycomb structure, a are the wall thickness of cellular unit lattice side wall, are thus designed, gas channel
Not only sidewall thickness is small for be in cellular unit lattice, and small to the throttling action of pipeline, and crushing is small；Cellular knot described in gas channel
The inscribed circle diameter d of cellular unit lattice meets 0.077D≤d≤0.173D in structure, and wherein D is runner caliber, more preferable to reach
Rectification effect, and eliminate influence of the cellular unit lattice wall thickness to rectifier exit flow field.
To sum up, pass through the design of guide ring 2 and gas rectifier structure 3 so that the anisotropic chaotic stream of runner front end
Dynamic rectification be with the axial parallel effective flowing of runner, rectification, and rectification effect can be carried out to the fluid of front end more large Reynold number
It is good.The LAMINAR WAKE of rectifier rear end is small, it is easier to be eliminated in compared with short and straight pipe section, rectifier rear end straight pipe requires small.
The quantity of the ultrasonic transducer group is not less than two, and at least two groups ultrasonic transducer group is in flow channel cross-section
On projection angle between 30 ° to 90 °.Such as Fig. 1, shown in Fig. 2, in the present embodiment, the quantity of ultrasonic transducer group is two
A, the ultrasonic transducer in ultrasonic transducer group is that ultrasonic wave transmitting-ultrasonic wave receives integral type energy converter, is wrapped respectively
The first ultrasonic transducer 401, the second ultrasonic transducer 402 containing the first ultrasonic transducer group, with the second ultrasonic waves
Third ultrasonic transducer 403, the 4th ultrasonic transducer 404 of energy device group；Two in any ultrasonic transducer group are super
The V-shaped angle of acoustic wave transducer is installed on direct piping, and the angle, θ of V-arrangement angle is at 40 ° -90 °, so as to reduce stream
Increase effective sound path in the case of gauge overall volume.It is additionally provided with several amendment type cumulative reflectings surface in the inner wall of direct piping 1
Structure 5；Any amendment type cumulative reflecting surface structure 5 is in elliptical arc shape, and the concave surface of the arc shape is in ultrasonic wave
In energy converter group ultrasonic wave transmitting receive V-shaped path knee region；So that sent out from transmitting terminal ultrasonic transducer
For signal after the focusing and reflection of amendment type cumulative reflecting surface structure, enhancing receives the ultrasonic signal strength transmitted and amendment
The offset of ultrasonic signal increases flowmeter range, realizes effective reception of the receiving terminal ultrasonic transducer to ultrasonic signal.
As shown in Figure 1, the first ultrasonic transducer 401 and the second ultrasonic transducer 402, third ultrasonic transducer
403 and the 4th projection of the ultrasonic transducer 404 on flow channel cross-section or the plane included angle where signal transmission path at 30 °
To between 90 °.The measurement of multigroup ultrasonic transducer group can obtain relatively more comprehensive complete sensing data, to be logical
It crosses algorithm optimization and provides data support by the flow rate calculation of runner, the measurement error that single pair sensor is brought is greatly reduced.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (10)
1. a kind of reflective multichannel ultrasonic gas flowmeter runner, including direct piping, the direct piping is equipped with import
End and outlet end；Several ultrasonic transducer groups are equipped on direct piping, it is characterised in that：Input end one is leaned in direct piping
Side is equipped with gas rectifier structure；The gas rectifier structure includes the gas channel that cross section is in honeycomb structure, gas channel
It is axial whole parallel with direct piping.
2. a kind of reflective multichannel ultrasonic gas flowmeter runner as described in claim 1, it is characterised in that：It is described straight
The input end threaded a pipe is equipped with guide ring, and the guide ring is integrally conical or tubaeform, and the inner wall of the longitudinal section of guide ring
It is streamlined.
3. a kind of reflective multichannel ultrasonic gas flowmeter runner as claimed in claim 2, it is characterised in that：The gas
Body rectifier structure meets L >=10DH；Wherein L is gas rectifier structure length, DHFor honeycomb in honeycomb structure described in gas channel
The hydraulic diameter of cell, and be the characteristic length of non-pipe flow.
4. a kind of reflective multichannel ultrasonic gas flowmeter runner as claimed in claim 3, it is characterised in that：The bee
The hydraulic diameter D of nest cellH=4A/P, wherein A are the area of passage of cellular unit lattice, and P is the wetted perimeter of cellular unit lattice.
5. a kind of reflective multichannel ultrasonic gas flowmeter runner as described in any one of claims 1 to 3, feature exist
In：The gas rectifier structure meets：D >=50a, wherein d is the interior of cellular unit lattice in honeycomb structure described in gas channel
Tangential circle diameter, a are the wall thickness of cellular unit lattice side wall.
6. a kind of reflective multichannel ultrasonic gas flowmeter runner as claimed in claim 5, it is characterised in that：Air-flow is logical
The inscribed circle diameter d of cellular unit lattice meets 0.077D≤d≤0.173D in honeycomb structure described in road, and wherein D is flow-path tube
Diameter.
7. a kind of reflective multichannel ultrasonic gas flowmeter runner as described in claim 1, it is characterised in that：The gas
The outer rim of body rectifier structure and the internal diameter of direct piping are that interference fit connects.
8. a kind of reflective multichannel ultrasonic gas flowmeter runner as described in claim 1, it is characterised in that：It is described super
The quantity of acoustic wave transducer group is not less than 2, and any ultrasonic transducer group includes two ultrasonic transducers, the ultrasonic wave
Energy converter is that ultrasonic wave transmitting-ultrasonic wave receives integral type energy converter；Two ultrasonic waves in any ultrasonic transducer group
The energy V-shaped angle of device is installed on direct piping, and the angle of V-arrangement angle is at 40 °~90 °.
9. a kind of reflective multichannel ultrasonic gas flowmeter runner as claimed in claim 8, it is characterised in that：Straight-through
The inner wall of pipeline is additionally provided with several amendment type cumulative reflecting surface structures；Any amendment type cumulative reflecting surface structure is in arc shape,
The concave surface of the arc shape be in the transmitting of ultrasonic wave in ultrasonic transducer group receive V-shaped path knee region.
10. a kind of reflective multichannel ultrasonic gas flowmeter runner as described in claim 1 or 8, it is characterised in that：Its
Projection angle α of the middle at least two groups ultrasonic transducer group on flow channel cross-section is between 30 ° to 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810640603.6A CN108562341A (en) | 2018-06-21 | 2018-06-21 | A kind of reflective multichannel ultrasonic gas flowmeter runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810640603.6A CN108562341A (en) | 2018-06-21 | 2018-06-21 | A kind of reflective multichannel ultrasonic gas flowmeter runner |
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| Publication Number | Publication Date |
|---|---|
| CN108562341A true CN108562341A (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810640603.6A Pending CN108562341A (en) | 2018-06-21 | 2018-06-21 | A kind of reflective multichannel ultrasonic gas flowmeter runner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579925A (en) * | 2018-11-17 | 2019-04-05 | 德闻仪器仪表(上海)有限公司 | A kind of built-in multichannel ultrasonic flow metering module |
| CN110967077A (en) * | 2018-10-01 | 2020-04-07 | 丹尼尔测量和控制公司 | Ultrasonic transducer with sealed 3D printed micro horn array |
| CN110967079A (en) * | 2019-10-25 | 2020-04-07 | 李晶 | Plug-in type gas ultrasonic flowmeter with uniformly distributed gas flow |
| CN114235104A (en) * | 2021-12-16 | 2022-03-25 | 上海思达斯易仪器仪表有限公司 | Measuring flow channel of gas ultrasonic flowmeter |
| CN115655394A (en) * | 2022-09-19 | 2023-01-31 | 青岛乾程科技股份有限公司 | Novel ultrasonic gas flowmeter unit and gas meter using same |
| CN118443107A (en) * | 2024-07-08 | 2024-08-06 | 浙江蓝宝石仪表科技有限公司 | Runner structure of ultrasonic gas flowmeter suitable for urban pipe network |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967077A (en) * | 2018-10-01 | 2020-04-07 | 丹尼尔测量和控制公司 | Ultrasonic transducer with sealed 3D printed micro horn array |
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| CN110967079A (en) * | 2019-10-25 | 2020-04-07 | 李晶 | Plug-in type gas ultrasonic flowmeter with uniformly distributed gas flow |
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| CN114235104A (en) * | 2021-12-16 | 2022-03-25 | 上海思达斯易仪器仪表有限公司 | Measuring flow channel of gas ultrasonic flowmeter |
| CN115655394A (en) * | 2022-09-19 | 2023-01-31 | 青岛乾程科技股份有限公司 | Novel ultrasonic gas flowmeter unit and gas meter using same |
| CN118443107A (en) * | 2024-07-08 | 2024-08-06 | 浙江蓝宝石仪表科技有限公司 | Runner structure of ultrasonic gas flowmeter suitable for urban pipe network |
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Address after: 401121 No. 69, Mount Huangshan Avenue, Yubei District, Chongqing Applicant after: Chongqing Qianwei watch Co., Ltd Address before: 401121 No. 69, Mount Huangshan Avenue, Yubei District, Chongqing Applicant before: QIANWEI KROMSCHRODER METERS (CHONGQING) Co.,Ltd. |