CN216433128U - Ultrasonic wave metering device and ultrasonic wave gas table - Google Patents
Ultrasonic wave metering device and ultrasonic wave gas table Download PDFInfo
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- CN216433128U CN216433128U CN202123252302.2U CN202123252302U CN216433128U CN 216433128 U CN216433128 U CN 216433128U CN 202123252302 U CN202123252302 U CN 202123252302U CN 216433128 U CN216433128 U CN 216433128U
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- 239000012530 fluid Substances 0.000 claims abstract description 134
- 238000005259 measurement Methods 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 67
- 239000002737 fuel gas Substances 0.000 description 8
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001902 propagating Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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Abstract
The embodiment of the application belongs to the technical field of ultrasonic flow detection, and particularly relates to an ultrasonic metering device and an ultrasonic gas meter. The embodiment of the application aims at solving the problem that when large-flow gas flows through a gas pipeline in the prior art, the ultrasonic signal at the center of the gas pipeline is influenced, and the measuring result is influenced. The ultrasonic wave metering device of the embodiment of the application comprises: a fluid conduit including an ultrasonic metering region therein; a first ultrasonic transducer and a second ultrasonic transducer are arranged on the pipe wall of the fluid pipeline, and the first ultrasonic transducer and the second ultrasonic transducer are used for forming ultrasonic waves in an ultrasonic wave metering area; the upper reaches of the ultrasonic measurement area are provided with the shunting piece, and the shunting piece is located the central line of fluid pipeline for with the central flow reposition of redundant personnel of fluid pipeline to the both sides wall of fluid pipeline, reduce the central flow, reduce the influence of large-traffic fluid pipeline center ultrasonic signal intensity and quality, further improve the accuracy of flow measurement.
Description
Technical Field
The embodiment of the application relates to ultrasonic flow detection technical field, especially relates to an ultrasonic metering device and ultrasonic gas table.
Background
The gas meter has an automatic accumulation function and is used for metering the use amount of gas. The ultrasonic gas meter is a novel gas meter, and measures the gas quantity passing through a gas pipeline in unit time by adopting a time difference method.
In the related art, a metering device of an ultrasonic gas meter includes: the ultrasonic wave downstream transducer and the ultrasonic wave upstream transducer are arranged on the pipe wall of the gas pipeline and are used for forming ultrasonic signals in the gas pipeline; the propagation direction of the ultrasonic signal includes two directions with respect to the flow direction of the gas: and detecting the time difference of the forward ultrasonic signal and the reverse ultrasonic signal in the gas during the forward flow and the reverse flow, calculating the gas flow rate through the time difference, and calculating the gas flow passing through the gas pipeline in unit time through the gas flow rate.
Therefore, the accuracy of gas flow measurement is directly determined by ultrasonic signals, the flow passing through the center of the gas pipeline is usually larger than the flow passing through the two side walls of the gas pipeline, when large-flow gas passes through the gas pipeline, the flow passing through the center of the gas pipeline is larger, the ultrasonic signals at the center of the gas pipeline are greatly influenced, and the accuracy of a final measurement result is further influenced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides an ultrasonic wave metering device and ultrasonic wave gas table for when solving large-traffic gas flow through the gas pipeline, cause the influence to the ultrasonic signal at gas pipeline center, and then influence the problem of final measuring result accuracy.
In one aspect, an embodiment of the present application provides an ultrasonic metering device, including: a fluid conduit including an ultrasonic metering region therein; a first ultrasonic transducer and a second ultrasonic transducer are arranged on the pipe wall of the fluid pipeline, the first ultrasonic transducer and the second ultrasonic transducer are arranged at intervals along the central line of the fluid pipeline, and the first ultrasonic transducer and the second ultrasonic transducer are used for forming ultrasonic waves in the ultrasonic wave metering area; the reposition of redundant personnel piece, the reposition of redundant personnel piece set up in the regional upper reaches of ultrasonic wave measurement, just the reposition of redundant personnel piece set up in on the central line of fluid pipeline.
Through the arrangement, the flow at the center of the fluid pipeline is shunted to the two side walls of the fluid pipeline, the flow at the center of the fluid pipeline is reduced, the influence of the large flow on the ultrasonic signal intensity and the quality at the center of the fluid pipeline is reduced, and the accuracy of flow measurement is further improved.
In some embodiments, which may include the above embodiments, the flow splitter tapers with respect to a cross-section of the fluid conduit in a direction of fluid flow.
In some embodiments, which may include the above embodiments, an end surface of the flow splitter proximate to the ultrasonic metering region is formed as an arcuate surface.
In some embodiments, which may include the above-described embodiments, an end surface of the flow splitter remote from the ultrasonic metering region is formed as a rectangular surface.
In some embodiments, which may include the above embodiments, the ultrasonic metering region is provided with a fillet extending in a direction parallel to a center line of the fluid conduit.
In some embodiments, which may include the above embodiments, the length of the fillet is greater than the length of the ultrasonic metering region in the direction of fluid flow.
In some embodiments, which may include the above embodiments, the fillet includes a plurality of fillets, and the plurality of fillets are disposed apart from each other.
In some embodiments, which may include the above embodiments, the fairing and the splitter have a predetermined distance therebetween, the predetermined distance being 5-10 times an average spacing of the plurality of fairings from each other.
In some embodiments, which may include the above embodiments, the plurality of fillets are spaced apart from each other the same distance.
On the other hand, an embodiment of the present application further provides an ultrasonic gas meter, including the ultrasonic metering device set forth above.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a first schematic top view of an ultrasonic measurement apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic top view of an ultrasonic measurement apparatus according to an embodiment of the present disclosure;
FIG. 3 is a sectional view taken along the line A-A in FIG. 1;
fig. 4 is a sectional view in the direction B-B in fig. 1.
Description of reference numerals:
10: a fluid conduit;
20: a first ultrasonic transducer;
30: a second ultrasonic transducer;
40: a flow divider;
50: a commutator segment;
101: an ultrasonic metering area;
102: a fluid inlet;
401: a connecting member.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
In the related art, a metering device of an ultrasonic gas meter includes: interval sets up first ultrasonic transducer and second ultrasonic transducer on the gas pipeline outer wall, and first ultrasonic transducer and second ultrasonic transducer are relative each other, and first ultrasonic transducer and second ultrasonic transducer can be in opposite directions alternately receive and dispatch ultrasonic signal, and is specific: the first ultrasonic transducer sends an ultrasonic signal towards the second ultrasonic transducer, and the second ultrasonic transducer receives the ultrasonic signal; and then the second ultrasonic transducer sends out an ultrasonic signal towards the first ultrasonic transducer, and the first ultrasonic transducer receives the ultrasonic signal. First ultrasonic transducer and second ultrasonic transducer also can receive and dispatch ultrasonic signal simultaneously, and is specific: the first ultrasonic transducer and the second ultrasonic transducer simultaneously send out ultrasonic signals to each other and then receive the ultrasonic signals. Therefore, a forward flow ultrasonic signal and a reverse flow ultrasonic signal are formed in the gas pipeline, the direction of the forward flow ultrasonic signal is the same as the flow direction of the gas, and the direction of the reverse flow ultrasonic signal is opposite to the flow direction of the gas. And the downstream ultrasonic signal and the upstream ultrasonic signal form a certain included angle with the flow direction of the fuel gas.
The first ultrasonic transducer comprises a first central transmitting and receiving point, and the first ultrasonic transducer scatters outwards for a certain distance by taking the first central transmitting and receiving point as a center to form a first transmitting and receiving area; the second ultrasonic transducer comprises a second central transceiving point, and scatters outwards for a certain distance by taking the second central transceiving point as a center to form a second transceiving area; the ultrasonic signal falls into the first transceiving area or the second transceiving area, which indicates that the first ultrasonic transducer and the second ultrasonic transducer receive the ultrasonic signal sent by the opposite party. When the ultrasonic signal sent by the first central transceiving point is received by the second central transceiving point, the propagation direction of the ultrasonic signal is not deviated in the transmission process, and the intensity of the ultrasonic signal is higher at the moment. When the ultrasonic signal sent by the first central transceiving point is not transmitted to the second central transceiving point but is received by other points in the second transceiving area, or the ultrasonic signal sent by the first central transceiving point is not transmitted to any point in the second transceiving area, it is described that the propagation direction of the ultrasonic signal is deviated in the transmission process, and the intensity of the ultrasonic signal is low at the moment, and the low intensity of the ultrasonic signal directly influences the propagation time of the downstream ultrasonic signal and the upstream ultrasonic signal in the fuel gas, and further influences the accuracy of fuel gas flow metering.
The cross sectional area of gas pipeline is fixed, and when gas flow was great, the gas velocity of flow was great, and in the direction of gas pipeline's cross section, the gas flow at gas pipeline center was greater than the gas flow of gas pipeline both sides wall usually, that is to say, the gas velocity of flow at gas pipeline center was greater than the gas velocity of flow of gas pipeline both sides wall. When large-flow gas flows into the gas pipeline, the propagation direction of the ultrasonic signal is deviated under the influence of the large-flow-rate gas, and the intensity of the ultrasonic signal at the center of the gas pipeline is reduced. Meanwhile, when the flow velocity is high, the flowing flow line of the fuel gas is not clearly identified any more, turbulence, turbulent flow or the like occurs in the fuel gas flow field, and the turbulence, turbulent flow or turbulent flow reduces the quality of the ultrasonic signal, thereby further influencing the accuracy of fuel gas flow measurement.
In order to solve the technical problems, the application provides an improved technical scheme, in the technical scheme, a flow dividing piece is arranged at the center of a gas pipeline and used for dividing the flow at the center of the gas pipeline, so that the flow at the center of the gas pipeline is divided to two side walls of the gas pipeline, the flow at the center of the gas pipeline is reduced, the flow speed is reduced, and the influence of the large flow at the center of the gas pipeline on ultrasonic signals is reduced; meanwhile, the flow passing through the center of the gas pipeline and the flow passing through the two side walls of the gas pipeline are more balanced.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 and fig. 2, an ultrasonic metering device provided in an embodiment of the present application includes: the fluid pipeline 10 comprises an ultrasonic metering area 101 in the fluid pipeline 10, a first ultrasonic transducer 20 and a second ultrasonic transducer 30 are arranged on the wall of the fluid pipeline 10, and the first ultrasonic transducer 20 and the second ultrasonic transducer 30 are used for forming ultrasonic signals in the ultrasonic metering area 101.
Specifically, a first ultrasonic transducer 20 and a second ultrasonic transducer 30 are arranged on the outer wall of the fluid pipeline 10, and ultrasonic signals emitted by the first ultrasonic transducer 20 and the second ultrasonic transducer 30 pass through the pipe wall and are transmitted in the fuel gas. As shown in fig. 2, the first ultrasonic transducer 20 and the second ultrasonic transducer 30 are spaced along a center line of the fluid pipeline 10, and the first ultrasonic transducer 20 and the second ultrasonic transducer 30 are spaced in a horizontal direction, and a first central transceiving point of the first ultrasonic transducer 20 is opposite to a second central transceiving point of the second ultrasonic transducer 30, and the first ultrasonic transducer 20 and the second ultrasonic transducer 30 can alternately transmit and receive ultrasonic signals in opposite directions or simultaneously transmit and receive ultrasonic signals, so as to form ultrasonic waves in the ultrasonic measurement area 101.
The ultrasonic wave of the ultrasonic measurement region 101 includes: the gas-fuel gas flow-direction ultrasonic wave generating device comprises a downstream ultrasonic wave and a counter-flow ultrasonic wave, wherein the propagation directions of the downstream ultrasonic wave and the counter-flow ultrasonic wave have certain included angles with the flow direction of gas, the flowing directions of the downstream ultrasonic wave and the gas are the same, and the propagation direction of the counter-flow ultrasonic wave is opposite to the flow direction of the gas. Meanwhile, the first ultrasonic transducer 20 and the second ultrasonic transducer 30 can record the time for sending the ultrasonic signal and the time for receiving the ultrasonic signal, so as to obtain the time for the forward flow ultrasonic wave to propagate in the gas and the time for the reverse flow ultrasonic wave to propagate in the gas, and obtain the time difference for the forward flow ultrasonic wave and the reverse flow ultrasonic wave to propagate in the gas.
The ultrasonic wave metering device further comprises: the flow divider 40 is disposed upstream of the ultrasonic measurement region 101, that is, the flow divider 40 is located before the ultrasonic measurement region 101 in the gas flow direction. And the flow dividing member 40 is disposed on a center line of the fluid pipe 10, wherein a connection member 401 extends toward a center of the fluid pipe 10 from an inner wall of the fluid pipe 10, and the flow dividing member 40 is fitted to an end of the connection member 401.
Therefore, in the ultrasonic measurement device according to the embodiment of the present application, the first ultrasonic transducer 20 and the second ultrasonic transducer 30 are disposed on the pipe wall of the fluid pipe 10, the fluid pipe 10 further includes an ultrasonic measurement region 101, the first ultrasonic transducer 20 and the second ultrasonic transducer 30 are disposed at intervals along the center line of the fluid pipe 10, and can alternately receive and transmit ultrasonic signals in opposite directions or simultaneously receive and transmit ultrasonic signals, so as to form forward-flow ultrasonic waves and backward-flow ultrasonic waves propagating in the fluid flow direction in the ultrasonic measurement region 101; the time difference of the forward flow ultrasonic wave and the backward flow ultrasonic wave in the fluid is obtained, and the fluid flow rate flowing through the fluid pipeline 10 can be indirectly calculated. The central line of the fluid pipeline 10 is further provided with a flow dividing member 40, the flow dividing member 40 is located at the upstream of the ultrasonic metering area 101, and can divide the fluid flow in the center of the fluid pipeline 10, so that the fluid flow in the center of the fluid pipeline 10 is divided to two side walls of the fluid pipeline 10, the fluid flow in the center of the fluid pipeline 10 is reduced, the fluid flow speed is reduced, and the phenomenon that the propagation direction of ultrasonic signals deviates and the influence on the ultrasonic signal strength is reduced is avoided; the reduction of the fluid flow velocity can also avoid the occurrence of turbulence, turbulent flow or turbulent flow and the like in the fluid flow field, the flow passing through the center of the fluid pipeline 10 and the flow passing through the two side walls of the fluid pipeline 10 are more balanced, the quality of ultrasonic signals is further ensured, and the accuracy of fluid flow measurement is improved.
When the first ultrasonic transducer 20 and the second ultrasonic transducer 30 are arranged on the pipe wall of the fluid pipeline 10, forward-flow ultrasonic waves and reverse-flow ultrasonic waves which form a certain included angle with the flow direction of the fluid are formed in the ultrasonic metering area 101. The first ultrasonic transducer 20 and the second ultrasonic transducer 30 may be disposed on an outer wall of the fluid pipeline 10, or may be disposed on an inner wall of the fluid pipeline 10. The technical personnel in the field can set up according to the actual assembly condition, and this application is not limited.
The fluid pipe 10 comprises a fluid inlet 102 and a fluid outlet, the first ultrasonic transducer 20 may be disposed at the fluid inlet 102 and emit ultrasonic waves from the fluid inlet 102 into the fluid pipe 10, and the second ultrasonic transducer 30 may be disposed at the fluid outlet and emit ultrasonic waves from the fluid outlet into the fluid pipe 10, in this case, the ultrasonic metering region 101 is the inner region of the entire fluid pipe 10, and forward ultrasonic waves and backward ultrasonic waves parallel to the fluid flow direction are formed in the ultrasonic metering region 101. The skilled person can set the specific mounting positions of the first ultrasonic transducer 20 and the second ultrasonic transducer 30 according to the actual assembly situation, and the application is not limited.
The fluid conduit 10 may include two first and second inner wall surfaces that are oppositely disposed, each of the first and second inner wall surfaces having a connection member 401 extending toward the center of the fluid conduit 10, and both ends of the flow dividing member 40 are respectively fixed to the ends of the two connection members 401, so that the connection members 401 are fitted in the center of the fluid conduit 10. The two connecting members 401 make the installation of the flow dividing member 40 more stable, and the flow dividing member 40 does not shake or shift when a large flow of fluid flows in. Specifically, the first inner wall surface, the second inner wall surface, and the flow dividing member 40 are provided with mounting holes, and the connecting member 401 is matched with the mounting holes.
Wherein, the connection 401 may include: cylindrical rods, sheet-like connecting rods, etc. The surface of the cylindrical rod, which is contacted with the fluid, is an arc surface, so that the fluid flows smoothly, and the stability of a fluid flow field is ensured. When connecting piece 401 is the slice connecting rod, the slice connecting rod parallels with the central line of fluid pipeline 10, and the slice connecting rod can include a plurality ofly, and the parallel interval of a plurality of slice connecting rods sets up, and when large-traffic fluid flowed into fluid pipeline 10, connecting piece 401 can support fixed reposition of redundant personnel piece 40, can also carry out the rectification to the partial fluid that flows through the slice connecting rod, avoids appearing the sinuous flow, vortex or turbulent flow etc..
Referring to fig. 1, 3 and 4, in the embodiment of the present application, an end surface of the flow divider 40 away from the ultrasonic metering area 101 may be formed as a rectangular surface, specifically, the flow divider 40 may include a rectangular block, the rectangular block has a simple structure, and the rectangular block has a flat outer surface, so that the processing and the assembly are very convenient. The flow splitter 40 may also comprise a rectangular sheet disposed perpendicular to the centerline of the fluid conduit 10.
In this application embodiment, the terminal surface that reposition of redundant personnel 40 is close to ultrasonic wave measurement region 101 also can form into the arcwall face, and is specific, and reposition of redundant personnel 40 can be streamlined structure, specifically includes: cylindrical blocks and spheres; when the flow divider 40 is a cylindrical block, the central axis of the cylindrical block is perpendicular to the centerline of the fluid conduit 10. When the fluid is contacted with the cylindrical block or the ball body, the fluid can stably and smoothly flow, the stability of a fluid flow field is ensured, and the occurrence of turbulence, turbulent flow or turbulent flow and the like under large flow is reduced while shunting.
Referring to fig. 2, in the embodiment of the present application, the cross section of the flow dividing member 40 relative to the fluid conduit 10 is gradually reduced in the direction of fluid flow. That is, in the direction of fluid flow, the thickness of the flow dividing member 40 is gradually narrowed from wide, so that the fluids separated by the flow dividing member 40 are gradually converged, rather than being instantaneously converged, and the stability of the fluid flow field is further ensured. Specifically, the flow dividing member 40 may include: the rotation axis of the conical block is positioned on the same straight line with the center line of the fluid pipeline 10.
When the fluid flow is large, the flow velocity is large, the flowing flow line of the fluid is not clearly distinguished any more, turbulent flow or the like occur in the flow field, and aiming at the problem that the quality of an ultrasonic signal is reduced due to the turbulent flow, the turbulent flow or the turbulent flow, the rectifier plate 50 is arranged in the ultrasonic metering area 101 in the embodiment of the application, the large-flow fluid in the ultrasonic metering area 101 is divided into a plurality of fluids, the flow fields of the fluids are not in contact with each other and are not influenced with each other, and the occurrence of the turbulent flow, the turbulent flow or the turbulent flow is avoided.
Specifically, the fluid conduit 10 includes a first inner wall surface and a second inner wall surface that are disposed opposite to each other, two ends of the rectifying plate 50 are connected to the first inner wall surface and the second inner wall surface, respectively, and the extending direction of the rectifying plate 50 is parallel to the center line of the fluid conduit 10. Referring to fig. 1 and 2, in the direction of fluid flow, the length of the fillet 50 is greater than the length of the ultrasonic metering region 101, so that the area occupied by the fillet 50 in the fluid pipeline 10 is greater than the area of the ultrasonic metering region 101, and it is ensured that the fluid entering the ultrasonic metering region 101 is rectified fluid.
When one fillet 50 is included, the fillet 50 bisects the fluid conduit 10 such that two fluid flow fields are included in the ultrasonic metering region 101. The plurality of segments 50 may be provided, and the plurality of segments 50 may be spaced apart from each other. The plurality of fillets 50 separate the fluid in the ultrasonic metering area 101 into a plurality of laminar flows, adjacent two laminar flows do not affect each other, and the flow field of each laminar flow tends to be stable. Wherein the plurality of fillets 50 are spaced apart from each other at the same distance, so that the flow rate of each laminar flow in the ultrasonic metering region 101 is more equalized.
In the embodiment of the present application, the plurality of fairings 50 and the splitter 40 have a predetermined distance therebetween, which is 5 to 10 times an average distance of the plurality of fairings 50 spaced apart from each other. When the preset distance is greater than 10 times of the average distance between the plurality of the fairings 50, the fairings 50 are far away from the flow dividing member 40, and the flow rate divided by the flow dividing member 40 is converged again to the state before the flow division, at this time, the flow dividing member 40 does not achieve the flow dividing effect. When the flow rate flowing through the fluid pipeline 10 is a small flow rate and the preset distance is less than 5 times of the average distance between the plurality of the rectifying pieces 50, the flow rate split by the splitting member 40 enters the ultrasonic metering region 101, and the laminar flow obtained after being separated by the rectifying pieces 50 again approaches to zero flow rate, which affects the accuracy of ultrasonic detection. In order to distinguish between a small flow and a zero flow, it is necessary to define that the distance between the fairing 50 and the splitter 40 cannot be too close.
Wherein, the preset distance between the fairing 50 and the splitter 40 may include: the plurality of fillets 50 are spaced apart from each other by 5, 7, or 10 times the average pitch of the distance.
In an embodiment, the flow splitter 40 may be disposed at the fluid inlet 102 at a center of the fluid inlet 102 with a distance between the fillets 50 and the flow splitter 40 that is 5-10 times an average spacing of the plurality of fillets 50 from each other.
In the embodiment of the present application, the fluid flowing through the fluid conduit 10 may include: gas, tap water.
The embodiment of the application also provides an ultrasonic gas meter which comprises the sound wave metering device.
According to the ultrasonic metering device provided by the embodiment of the application, the first ultrasonic transducer 20 and the second ultrasonic transducer 30 are arranged on the pipe wall of the fluid pipeline 10, the fluid pipeline 10 further comprises an ultrasonic metering area 101, the first ultrasonic transducer 20 and the second ultrasonic transducer 30 are arranged at intervals along the central line of the fluid pipeline 10, and can alternately receive and transmit ultrasonic signals in opposite directions or simultaneously receive and transmit ultrasonic signals, and downstream ultrasonic waves and upstream ultrasonic waves which are transmitted relative to the fluid flowing direction are formed in the ultrasonic metering area 101; the difference in the time of propagation of the forward and reverse ultrasonic waves in the fluid is recorded, enabling the fluid flow through the fluid conduit 10 to be calculated indirectly. The central line of the fluid pipeline 10 is further provided with a flow dividing member 40, the flow dividing member 40 is located at the upstream of the ultrasonic metering area 101, and can divide the fluid flow in the center of the fluid pipeline 10, so that the fluid flow in the center of the fluid pipeline 10 is divided to two side walls of the fluid pipeline 10, the fluid flow in the center of the fluid pipeline 10 is reduced, the fluid flow speed is reduced, and the phenomenon that the propagation direction of ultrasonic signals deviates and the influence on the ultrasonic signal strength is reduced is avoided; the reduction of the fluid flow velocity can also avoid the occurrence of turbulence, turbulent flow or turbulent flow and the like in the fluid flow field, the flow passing through the center of the fluid pipeline 10 and the flow passing through the two side walls of the fluid pipeline 10 are more balanced, the quality of ultrasonic signals is further ensured, and the accuracy of fluid flow measurement is improved.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. An ultrasonic metering device, comprising:
a fluid conduit including an ultrasonic metering region therein;
a first ultrasonic transducer and a second ultrasonic transducer are arranged on the pipe wall of the fluid pipeline, the first ultrasonic transducer and the second ultrasonic transducer are arranged at intervals along the central line of the fluid pipeline, and the first ultrasonic transducer and the second ultrasonic transducer are used for forming ultrasonic waves in the ultrasonic wave metering area;
the reposition of redundant personnel piece, the reposition of redundant personnel piece set up in the regional upper reaches of ultrasonic wave measurement, just the reposition of redundant personnel piece set up in on the central line of fluid pipeline.
2. The ultrasonic metering device of claim 1,
the flow divider is tapered relative to the cross-section of the fluid conduit in the direction of fluid flow.
3. The ultrasonic metering device of claim 2,
the end face of the flow dividing piece close to the ultrasonic metering area is formed into an arc-shaped face.
4. An ultrasonic metering device according to any one of claims 1 to 3,
the end face, far away from the ultrasonic metering area, of the flow dividing piece is formed into a rectangular face.
5. The ultrasonic metering device of claim 1,
the ultrasonic wave metering area is provided with a rectifying piece, and the extending direction of the rectifying piece is parallel to the central line of the fluid pipeline.
6. The ultrasonic metering device of claim 5,
the length of the fillet is greater than the length of the ultrasonic metering region in the direction of fluid flow.
7. The ultrasonic metering device of claim 5,
the fairing includes a plurality of, a plurality of the fairing is set up at interval each other.
8. The ultrasonic metering device of claim 7,
the fairing and the diverging member have a predetermined distance therebetween, the predetermined distance being 5-10 times an average distance of a plurality of fairings spaced apart from each other.
9. The ultrasonic metering device of claim 7,
the plurality of the commutator segments are spaced from each other by the same distance.
10. An ultrasonic gas meter comprising the ultrasonic measuring device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123252302.2U CN216433128U (en) | 2021-12-21 | 2021-12-21 | Ultrasonic wave metering device and ultrasonic wave gas table |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123252302.2U CN216433128U (en) | 2021-12-21 | 2021-12-21 | Ultrasonic wave metering device and ultrasonic wave gas table |
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| CN216433128U true CN216433128U (en) | 2022-05-03 |
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