CN211717528U - Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter - Google Patents
Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter Download PDFInfo
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- CN211717528U CN211717528U CN202020443115.9U CN202020443115U CN211717528U CN 211717528 U CN211717528 U CN 211717528U CN 202020443115 U CN202020443115 U CN 202020443115U CN 211717528 U CN211717528 U CN 211717528U
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Abstract
The utility model discloses a built-in oblique reflection multi-channel ultrasonic flow measurement module and a flow meter, belonging to the technical field of flow measurement, wherein the measurement module comprises a measuring tube and an ultrasonic transducer communicated with an internal flow passage of the measuring tube, the measuring tube is a polygonal prism body, and the internal flow passage of the measuring tube has the same diameter with a measured pipeline; ultrasonic transducers are arranged on the measuring pipe in pairs, and each pair of ultrasonic transducers reflect sound wave energy through the wall surface of the internal flow passage in an oblique reflection mode; when gas enters the internal flow channel, the gas flow rate is determined according to the measured sound wave transmission time by measuring the transmission time between the paired ultrasonic transducers. Through the integrated design of a plurality of groups of ultrasonic transducers, the outside of the module has no detachable part. Because the measuring pipe is a polygonal prism, the mounting positions of the transducers are more, and the whole volume is reduced. The transducer is arranged on the surface edge surface of the polygonal prism, and the edge surface is a plane.
Description
Technical Field
The utility model relates to a flow measurement technical field, specifically speaking relates to a built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter.
Background
With the rapid development of ultrasonic flow meter technology, ultrasonic flow meters have been widely used for measuring gases such as natural gas, petroleum gas, coal gas and the like. Since the ultrasonic waves carry information on the flow velocity of the fluid when propagating through the flowing fluid, the flow velocity of the fluid can be detected by the received ultrasonic waves and converted into a flow rate.
At present, the ultrasonic flow meter on the market generally adopts a mode that a single group or a plurality of groups of ultrasonic transducers are arranged on two sides of the pipe diameter of a meter body, and correlation type sound waves are utilized to measure and calculate the flow. The method for measuring the fluid has the advantages of single cross section and short sound path distance, and cannot solve the measurement precision error caused by flow state distribution change.
An externally installed ultrasonic transducer (such as an ultrasonic flowmeter disclosed in chinese patent publication No. CN 105264339A), especially for the installation of multiple sets of ultrasonic transducers, is prone to cause the length and volume of the flowmeter body to be too large to be suitable for smaller calibers due to the requirements of ensuring the airtight safety of the product and the installation angle and space of the transducers.
In addition, a built-in multi-channel ultrasonic flowmeter metering module disclosed in chinese patent publication No. CN109579925A includes a gas flow channel, a metering module, and an arithmetic module, where the gas flow channel is a spherical cavity, and a plurality of ultrasonic probes are arranged in pairs on the spherical cavity; an opening is formed in the front end of the spherical cavity, and a honeycomb rectifier is filled in the opening; the honeycomb rectifier comprises a plurality of rectifier tubes arranged in parallel, and the openings are filled with the plurality of rectifier tubes; still including being used for tightening the jump ring of rectifier tube, the jump ring card is located the opening part. A plurality of probe mounting holes are formed in the spherical cavity; the ultrasonic probe is arranged in the probe mounting hole and is fixed by a compression nut. The rear end of the spherical cavity is provided with an installation opening; the mounting opening part is provided with a sealing groove, and a sealing ring is arranged in the sealing groove. A flow guide semispherical cover is arranged outside the opening; the flow guide semispherical cover is fixedly arranged on the spherical cavity, and the center of the flow guide semispherical cover is over against the center of the opening. When gas flows through the flow guide semispherical cover and the honeycomb rectifier and enters the spherical cavity, the transmission time between the sound waves of the paired ultrasonic probes is measured by the metering module; and the operation module determines the gas flow according to the acoustic wave transmission time measured by the metering module.
The built-in multi-channel ultrasonic flowmeter metering module disclosed by the patent has the advantages of large occupied space, complex installation and low measurement precision.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter, measurement module is small, and simple to operate can set up multiunit ultrasonic transducer as required to improve measurement accuracy.
In order to achieve the above object, on the one hand, the utility model provides a built-in oblique reflection multichannel ultrasonic flow measurement module, including survey buret and with the ultrasonic transducer of the inside runner intercommunication of survey buret, the survey buret is polygon arris body, its inside runner is with the same footpath of pipeline under test;
the ultrasonic transducers are arranged on the measuring pipe in pairs, and each pair of ultrasonic transducers reflect sound wave energy through the wall surface of the internal flow passage in an oblique reflection mode;
when gas enters the internal flow channel, the gas flow rate is determined according to the measured sound wave transmission time by measuring the transmission time between the paired ultrasonic transducers.
Among the above-mentioned technical scheme, through the integrated design of multiunit ultrasonic transducer, the module outside does not have the part of dismantling. The measurement module is integrally installed and is sealed separately for each ultrasonic transducer. Because the measuring pipe is a polygonal prism, the mounting positions of the transducers are more, and the whole volume is reduced. The transducer is installed on the surface prism of the polygonal prism, and the ultrasonic transducer can be better positioned during installation due to the fact that the prism is a plane. Each pair of ultrasonic transducers adopts an oblique reflection mode, and the oblique reflection type sound wave propagation path penetrates through more fluid speeds of the measuring section under the condition that the same number of probes are installed, so that the ultrasonic transducer can be suitable for distribution in various flow states, and the precision is higher. The same measurement cross section promptly, required probe is still less, and the overall arrangement of probe is more reasonable, and whole module volume is littleer to install more conveniently.
Optionally, in an embodiment, the measuring tube is provided with a through hole for mounting the ultrasonic transducer. The axis of through-hole perpendicular to faceted pebble sets up, can improve sealed effect.
Optionally, in one embodiment, the ultrasonic transducer is mounted in the through hole through a cover plate; the ultrasonic transducer and the cover plate are fixed into a whole through glue pouring. The lead of the transducer penetrates out of the through hole in the top of the cover plate and is sealed by glue pouring. During installation, the ultrasonic transducer and the cover plate integrated assembly are placed into the through hole, the bottom of the cover plate abuts against the top of the through hole, and the cover plate is fixed through bolts.
Optionally, in one embodiment, the measuring tube is provided with a routing channel. When the measuring module is installed on the metering gauge, in order to increase the installation stability of the measuring module and occupy smaller volume, a plurality of installation surfaces are arranged outside the measuring module to abut against the inner wall of an installation cavity where the measuring module is located, so that other fixing parts are not needed, and the stable installation can be realized. The wiring channel is used for the wire of the ultrasonic transducer to pass through, so that the space occupied by the wire can be saved on one hand, and the wire can be protected on the other hand.
Optionally, in one embodiment, the outer surface of the measurement tube has at least six mounting planes. And the five mounting planes are respectively propped against five inner walls in the mounting cavity of the metering gauge, and the mounting plane at the top is propped against the mounting cover plate at the top. Therefore, the stability of the measuring module can be ensured, and the concentricity of the inner flow passage of the measuring pipe and the inner diameter of the measured pipe is ensured.
Optionally, in an embodiment, the mounting plane located at the top of the measuring tube is provided with a mounting block, and the mounting block is provided with a through hole which can be communicated with the routing channel. And all the wires in the wiring channels on the side surfaces of the measuring module are concentrated into the through wire holes of the mounting block and are led to the outside through the through wire holes for respective connection. The mounting block is used for concentrating the lead on one hand and abutting against a mounting cover plate at the top of the mounting cavity on the other hand, so that the stability of the measuring module is ensured.
On the other hand, the utility model provides a built-in oblique reflection multichannel ultrasonic flowmeter, including the installation subject, install built-in oblique reflection multichannel ultrasonic flowmeter in the installation subject, built-in oblique reflection multichannel ultrasonic flowmeter is for above built-in oblique reflection multichannel ultrasonic flowmeter.
Optionally, in an embodiment, the mounting body has a measurement channel, the measurement pipe of the built-in oblique reflection multi-channel ultrasonic flow measurement module has the same diameter as the measurement channel, and flanges for connecting the measured pipe are arranged at two ends of the measurement channel; and a rectifier is arranged at the inlet end.
Optionally, in an embodiment, an installation cavity with an open top is formed in the installation main body, and the measurement channel passes through the installation cavity; the top of installation main part is equipped with the installation apron that is used for fixing, just be equipped with the through-hole that is used for the lead wire on the installation apron.
Optionally, in an embodiment, the mounting cavity is square, and the built-in obliquely-reflecting multi-channel ultrasonic flow measurement module has six mounting planes corresponding to six sides of the square respectively.
Drawings
Fig. 1 is an exploded view of a built-in oblique reflection multi-channel ultrasonic flowmeter according to an embodiment of the present invention;
fig. 2 is a side view of an embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a side view of a measurement module in an embodiment of the invention;
fig. 5 is an exploded view of a measurement module according to an embodiment of the present invention;
fig. 6 is an isometric view of a measurement module in an embodiment of the invention;
fig. 7 is a cross-sectional view of a measurement module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the following embodiments and accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments without any inventive step, are within the scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of the terms "comprising" or "including" and similar referents in the context of describing the invention as being "comprising" and the like, is to be construed to cover the listed referents or items, including but not limited to the listed referents or items, and equivalents thereof. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Flow meter embodiments
Referring to fig. 1 to 3, the built-in oblique reflection multi-channel ultrasonic flow meter of the present embodiment includes a mounting body 100, a mounting cover 200, and a measurement module 300. The mounting body 100 is provided with a measuring channel, and a flange 101 and a flange 102 for connecting a measured pipeline are arranged at two ends of the measuring channel; and a rectifier 103 is provided at the inlet end. The mounting body 100 is provided with a mounting cavity 104 with an open top, and the measuring channel passes through the mounting cavity 104. The mounting cover 200 is provided with a through hole 201 for a through wire. The mounting cavity 104 of the present embodiment is square, and the measurement module 300 is mounted in the mounting cavity 104.
Referring to fig. 4 to 7, in the present embodiment, the measurement module 300 includes a measurement pipe 301 and an ultrasonic transducer mounted on the measurement pipe 301. The measuring tube 301 is a polygonal prism having six mounting planes corresponding to six sides of the square mounting cavity 104. The inner flow passage of the measuring pipe 301 has the same diameter as the pipe to be measured.
The ultrasonic transducers are mounted on the measurement pipe 301 in pairs, as shown in fig. 5 and 6, the ultrasonic transducer 311 and the ultrasonic transducer 312 are a matched pair, and the ultrasonic transducer 313 and the ultrasonic transducer 314 are a matched pair. Each pair of ultrasonic transducers reflects acoustic energy through the wall of the partial flow channel of the measurement tube 301 by means of oblique reflection. When the gas enters the internal flow channel, the gas flow rate is determined according to the measured sound wave transmission time by measuring the transmission time between the paired ultrasonic transducers.
In this embodiment, the measurement pipe 301 is provided with a through hole 302 for mounting an ultrasonic transducer. All ultrasonic transducers are mounted in the through-hole 302 through the cover plate 310. The ultrasonic transducer and the cover plate 310 are fixed into a whole through glue filling.
In this embodiment, the measuring pipe 301 is provided with a wire channel, which includes a vertical wire channel located at the front and rear sides of the measuring pipe 301 and a horizontal wire channel located at the top of the measuring pipe 301 and connected end to end with the two vertical wire channels. The mounting plane at the top of the measuring pipe 301, i.e. the top of the horizontal wiring channel, is provided with a mounting block 303, and the mounting block 303 is provided with a through hole 304 which can be communicated with the horizontal wiring channel and corresponds to the through hole 201 on the mounting cover plate 200.
Measuring Module embodiments
The measurement module of this embodiment is already included in the meter embodiment, and is not described herein again.
Claims (10)
1. A built-in oblique reflection multi-channel ultrasonic flow measurement module comprises a measurement pipe and an ultrasonic transducer communicated with an internal flow passage of the measurement pipe, and is characterized in that the measurement pipe is a polygonal prism, and the internal flow passage of the measurement pipe has the same diameter as a measured pipeline;
the ultrasonic transducers are arranged on the measuring pipe in pairs, and each pair of ultrasonic transducers reflect sound wave energy through the wall surface of the internal flow passage in an oblique reflection mode;
when gas enters the internal flow channel, the gas flow rate is determined according to the measured sound wave transmission time by measuring the transmission time between the paired ultrasonic transducers.
2. The built-in oblique reflection multi-channel ultrasonic flow measurement module according to claim 1, wherein the measurement tube is provided with a through hole for mounting the ultrasonic transducer.
3. The built-in oblique reflection multi-channel ultrasonic flow measurement module of claim 2, wherein the ultrasonic transducer is mounted in the through hole through a cover plate; the ultrasonic transducer and the cover plate are fixed into a whole through glue pouring.
4. The built-in oblique reflection multi-channel ultrasonic flow measurement module of claim 1, wherein the measurement tube is provided with a trace channel.
5. The built-in, oblique reflection, multi-channel ultrasonic flow measurement module of claim 4, wherein the exterior of the measurement tube has at least six mounting planes.
6. The built-in oblique reflection multi-channel ultrasonic flow measurement module of claim 5, wherein a mounting block is provided on a mounting plane at the top of the measurement tube, and the mounting block is provided with a through hole for communicating the wiring channel.
7. A built-in type oblique reflection multi-channel ultrasonic flowmeter comprises an installation main body, wherein a built-in type oblique reflection multi-channel ultrasonic flowmeter module is installed in the installation main body, and the built-in type oblique reflection multi-channel ultrasonic flowmeter module is the built-in type oblique reflection multi-channel ultrasonic flowmeter module according to any claim 1-6.
8. The built-in oblique reflection multi-channel ultrasonic flowmeter as claimed in claim 7, wherein the mounting body has a measurement channel, the measurement tube of the built-in oblique reflection multi-channel ultrasonic flowmeter has the same diameter as the measurement channel, and flanges for connecting the measured tube are provided at both ends of the measurement channel; and a rectifier is arranged at the inlet end.
9. The built-in oblique reflection multi-channel ultrasonic flowmeter as recited in claim 8, wherein the mounting body has a mounting cavity with an open top, and the measurement channel passes through the mounting cavity; the top of installation main part is equipped with the installation apron that is used for fixing, just be equipped with the through-hole that is used for the lead wire on the installation apron.
10. The built-in oblique reflection multi-channel ultrasonic flowmeter of claim 9, wherein the installation cavity is square, and the built-in oblique reflection multi-channel ultrasonic flowmeter has six installation planes corresponding to six sides of the square respectively.
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| CN202020443115.9U CN211717528U (en) | 2020-03-31 | 2020-03-31 | Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter |
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| CN202020443115.9U CN211717528U (en) | 2020-03-31 | 2020-03-31 | Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272240A (en) * | 2020-03-31 | 2020-06-12 | 杭州思筑智能设备有限公司 | Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272240A (en) * | 2020-03-31 | 2020-06-12 | 杭州思筑智能设备有限公司 | Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter |
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