CN111272240B - 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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- CN111272240B CN111272240B CN202010242989.2A CN202010242989A CN111272240B CN 111272240 B CN111272240 B CN 111272240B CN 202010242989 A CN202010242989 A CN 202010242989A CN 111272240 B CN111272240 B CN 111272240B
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- 238000005259 measurement Methods 0.000 title claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 10
- 239000000523 sample Substances 0.000 description 8
- 239000012530 fluid Substances 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Classifications
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- 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
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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Abstract
The invention discloses a built-in oblique reflection multichannel ultrasonic flow measurement module and a flowmeter, which belong 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, and the internal flow passage of the measuring tube and a measured pipeline have the same diameter; the ultrasonic transducers are arranged on the measuring tube in pairs, and each pair of ultrasonic transducers reflects the sound wave energy through the wall surface of the internal flow channel in an oblique reflection mode; when gas enters the internal flow channel, the gas flow rate is determined according to the measured sonic 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 is not provided with a detachable part. As the measuring tube is a polygonal prism, the transducer is more in mounting position and the whole volume is reduced. The transducer is arranged on the surface of the polygonal prism, and the prism surface is a plane.
Description
Technical Field
The invention relates to the technical field of flow measurement, in particular to a built-in oblique reflection multichannel ultrasonic flow measurement module and a flowmeter.
Background
Along with the rapid development of ultrasonic flowmeter technology, ultrasonic flowmeters have been widely used for measuring natural gas, petroleum gas, gas and other gases. Since the ultrasonic wave is carried with the information of the flow velocity of the fluid when it propagates in the flowing fluid, the flow velocity of the fluid can be detected by the received ultrasonic wave and converted into the flow rate.
At present, ultrasonic flow meters in the market commonly adopt a method of installing single-group or multi-group ultrasonic transducers on two sides of the pipe diameter of a meter body, and measuring and calculating flow by utilizing opposite-jet sound waves. The method for measuring the fluid has the advantages of single cross section and short sound path distance, and can not solve the measurement accuracy error caused by the distribution change of the fluid state.
An external ultrasonic transducer (such as an ultrasonic flowmeter disclosed in Chinese patent publication No. CN 105264339A) is installed, and particularly for the installation of multiple groups of ultrasonic transducers, the requirements of airtight safety of products, installation angle space of the transducers and the like are required to be ensured, so that the length dimension and the volume of the main body of the flowmeter are easily enlarged, and the flowmeter is not suitable for smaller caliber.
In addition, a built-in multichannel ultrasonic flowmeter metering module disclosed in Chinese patent document with publication number of CN109579925A comprises a gas flow passage, a metering module and an operation module, wherein the gas flow passage is a spherical cavity, and a plurality of ultrasonic probes are arranged on the spherical cavity in pairs; the front end of the spherical cavity is provided with an opening, and a honeycomb rectifier is filled in the opening; the honeycomb rectifier comprises a plurality of rectifying tubes which are arranged in parallel, and the plurality of rectifying tubes fill the openings; the clamping spring is used for tightening the rectifying tube and is arranged at the opening. A plurality of probe mounting holes are formed in the spherical cavity; the ultrasonic probe is installed in the probe installation hole and is fixed by a compression nut. The rear end of the spherical cavity is provided with an installation opening; the installation opening part is provided with the seal groove, is provided with the sealing washer in the seal groove. A diversion hemispherical cover is arranged outside the opening; the flow guiding semi-spherical cover is fixedly arranged on the spherical cavity, and the center of the flow guiding semi-spherical cover is opposite to the center of the opening. When the gas flows through the diversion hemispherical cover and the honeycomb rectifier and enters the spherical cavity, the metering module measures the transmission time between the sound waves of the paired ultrasonic probes; the operation module determines the gas flow according to the sound wave transmission time measured by the metering module.
The built-in multichannel ultrasonic flowmeter metering module of the patent occupies a large space, is complex to install and has low measurement accuracy.
Disclosure of Invention
The invention aims to provide a built-in oblique reflection multichannel ultrasonic flow measurement module and a flowmeter, wherein the measurement module is small in size and convenient to install, and multiple groups of ultrasonic transducers can be arranged according to requirements so as to improve measurement accuracy.
In order to achieve the above purpose, in one aspect, the built-in oblique reflection multichannel ultrasonic flow measurement module provided by the invention comprises a measurement pipe and an ultrasonic transducer communicated with an internal flow passage of the measurement pipe, wherein the measurement pipe is a polygonal prism, and the internal flow passage of the measurement pipe and a measured pipeline have the same diameter;
The ultrasonic transducers are arranged on the measuring tube in pairs, and each pair of ultrasonic transducers reflects the sound energy through the wall surface of the internal flow channel in an oblique reflection mode;
When gas enters the internal flow channel, the gas flow rate is determined according to the measured sonic wave transmission time by measuring the transmission time between the paired ultrasonic transducers.
In the technical scheme, through the integrated design of a plurality of groups of ultrasonic transducers, no detachable part exists outside the module. The measuring module is integrally installed and is sealed independently for each ultrasonic transducer. As the measuring tube is a polygonal prism, the transducer is more in mounting position and the whole volume is reduced. The transducer is arranged on the surface of the polygonal prism, and the ultrasonic transducer can be better positioned during the installation because the surface is a plane. Each pair of ultrasonic transducers adopts an oblique reflection mode, and under the condition of installing the same number of probes, the oblique reflection type sound wave propagation path passes through more fluid speeds with measured cross sections, so that the ultrasonic transducer can be suitable for various fluid distribution and has higher precision. Namely, the same measuring section requires fewer probes, the layout of the probes is more reasonable, and the whole module is smaller in size and more convenient to install.
Optionally, in one embodiment, the measuring tube is provided with a through hole for mounting the ultrasonic transducer. The axis of the through hole is perpendicular to the prismatic surface, so that the sealing effect can be improved.
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 filling. The lead of the transducer passes through the through hole at the top of the cover plate and is sealed by glue filling. 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 by bolts.
Optionally, in one embodiment, a routing channel is provided on the measuring tube. When the measuring module is mounted on the metering meter, in order to increase the mounting stability of the measuring module and occupy a small volume, the inner wall of the mounting cavity where the measuring module is arranged can be propped against by arranging a plurality of mounting surfaces outside the measuring module, so that stable mounting can be realized without other fixing parts. The wiring channel is used for the wire passing of the ultrasonic transducer, 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 exterior of the measuring tube has at least six mounting planes. The five installation planes are respectively propped against the five inner walls in the installation cavity of the metering meter, and the installation plane at the top is propped against the installation 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 tube and the inner diameter of the measured pipeline is ensured.
Optionally, in one embodiment, a mounting plane located at the top of the measuring tube is provided with a mounting block, and the mounting block is provided with a wire through hole capable of communicating with the wire channel. And concentrating all the wires in the wiring channels on the side surface of the measurement module into the wire through holes of the mounting block, and leading the wires to the outside through the wire through holes for connection. The function of the mounting block is to concentrate the lead on one hand and to prop against the 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 built-in type oblique reflection multichannel ultrasonic flowmeter provided by the invention comprises a mounting main body, wherein a built-in type oblique reflection multichannel ultrasonic flow measurement module is arranged in the mounting main body, and the built-in type oblique reflection multichannel ultrasonic flow measurement module is the built-in type oblique reflection multichannel ultrasonic flow measurement module.
Optionally, in one embodiment, the mounting main body has a measurement channel, the measurement tube of the built-in oblique reflection multichannel ultrasonic flow measurement module and the measurement channel have the same diameter, and flanges for connecting the measured pipeline are arranged at two ends of the measurement channel; and a rectifier is arranged at the inlet end.
Optionally, in one embodiment, a top opening mounting cavity is provided in the mounting main body, 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 fixed, just be equipped with the through-hole that is used for the lead to the line on the installation apron.
Optionally, in one embodiment, the mounting cavity is square, and the built-in oblique reflection 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 flow meter according to an embodiment of the present invention;
FIG. 2 is a side view of a built-in obliquely reflecting multi-channel ultrasonic flow meter according to 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 according to an embodiment of the invention;
FIG. 7 is a cross-sectional view of a measurement module in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, based on the described embodiments, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used in this specification, the word "comprising" or "comprises", and the like, means that the element or article preceding the word is meant to encompass the element or article listed thereafter and equivalents thereof without excluding other elements or articles. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Flowmeter embodiment
Referring to fig. 1 to 3, the built-in oblique reflection multi-channel ultrasonic flowmeter of the present embodiment includes a mounting body 100, a mounting cover 200, and a measurement module 300. The installation main body 100 is provided with a measuring channel, and flanges 101 and 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. An open-top mounting cavity 104 is provided in the mounting body 100, and a measurement channel passes through the mounting cavity 104. The mounting cover 200 is provided with a through hole 201 for a wire. The mounting cavity 104 of the present embodiment is square, and the measurement module 300 is mounted within 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 chamber 104, respectively. The internal flow path of the measurement pipe 301 is the same diameter as the pipe under measurement.
The ultrasonic transducers are mounted in pairs on the measuring tube 301, and 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 wave energy by way of oblique reflection through the wall of the flow channel of the portion of the measurement tube 301. When gas enters the internal flow channel, the gas flow rate is determined according to the measured sonic wave transmission time by measuring the transmission time between the paired ultrasonic transducers.
In this embodiment, a through hole 302 for mounting an ultrasonic transducer is provided in the measurement pipe 301. All ultrasonic transducers are mounted in through holes 302 by cover plate 310. The ultrasonic transducer and the cover plate 310 are fixed together through glue filling.
In this embodiment, the measuring tube 301 is provided with a routing channel, which includes a routing channel located at the front and rear sides of the measuring tube 301 in the vertical direction and a horizontal routing channel located at the top of the measuring tube 301 and connected end to end with the routing channels in the two vertical directions. The mounting plane at the top of the measuring tube 301, i.e. the top of the horizontal routing 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 routing channel and corresponds to the through hole 201 on the mounting cover plate 200.
Measurement module embodiment
The measurement module of this embodiment is already included in the meter embodiment, and will not be described here again.
Claims (8)
1. The built-in oblique reflection multichannel 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 and a measured pipeline have the same diameter;
The ultrasonic transducers are arranged on the measuring tube in pairs, and each pair of ultrasonic transducers reflects the sound energy through the wall surface of the internal flow channel in an oblique reflection mode;
When the gas enters the internal flow channel, determining the gas flow according to the measured sound wave transmission time by measuring the transmission time between the paired ultrasonic transducers;
The measuring tube is provided with a through hole for installing the ultrasonic transducer;
the outer surface of the measuring tube is provided with at least six mounting planes.
2. The built-in oblique reflection ultrasonic flow measurement module according to claim 1, wherein the ultrasonic transducer is installed in the through hole through a cover plate; the ultrasonic transducer and the cover plate are fixed into a whole through glue filling.
3. The built-in oblique reflection ultrasonic flow measurement module according to claim 1, wherein the measuring tube is provided with a wiring channel.
4. A built-in oblique reflection ultrasonic flow measurement module according to claim 3, wherein a mounting block is provided on a mounting plane at the top of the measuring tube, and a wire through hole capable of communicating with the wire passage is provided on the mounting block.
5. The utility model provides a built-in oblique reflection multichannel ultrasonic flowmeter, includes the installation main part, install built-in oblique reflection multichannel ultrasonic flow measurement module in the installation main part, its characterized in that, built-in oblique reflection multichannel ultrasonic flow measurement module is the built-in oblique reflection multichannel ultrasonic flow measurement module of any one of claims 1~ 4.
6. The built-in oblique reflection multi-channel ultrasonic flowmeter according to claim 5, wherein the mounting main body is provided with a measuring channel, the measuring tube of the built-in oblique reflection multi-channel ultrasonic flow measuring module is the same as the measuring channel in diameter, and flanges for connecting a measured pipeline are arranged at two ends of the measuring channel; and a rectifier is arranged at the inlet end.
7. The ultrasonic flowmeter of claim 6, wherein the mounting body has a top open mounting cavity therein through which the measurement channel passes; the top of installation main part is equipped with the installation apron that is used for fixed, just be equipped with the through-hole that is used for the lead to the line on the installation apron.
8. The ultrasonic flow meter according to claim 7, wherein the mounting cavity is square, and the ultrasonic flow meter module has six mounting planes corresponding to six sides of the square.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010242989.2A CN111272240B (en) | 2020-03-31 | 2020-03-31 | Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter |
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| CN202010242989.2A CN111272240B (en) | 2020-03-31 | 2020-03-31 | Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter |
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| CN111272240A CN111272240A (en) | 2020-06-12 |
| CN111272240B true CN111272240B (en) | 2024-07-23 |
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| CN112665670A (en) * | 2021-01-21 | 2021-04-16 | 沈阳佳德联益能源科技股份有限公司 | NB-IoT (Internet of things) ultrasonic water meter |
| CN114061677B (en) * | 2021-11-27 | 2024-09-20 | 觉隆传感技术(深圳)有限公司 | Multi-channel large-caliber ultrasonic water meter with layered layout of column type transducers |
| CN118067209A (en) * | 2024-03-23 | 2024-05-24 | 苏州东剑智能科技有限公司 | Ultra-large-diameter straight-through type multichannel ultrasonic fluid measuring device |
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| CN211717528U (en) * | 2020-03-31 | 2020-10-20 | 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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| DE602005004655D1 (en) * | 2005-07-05 | 2008-03-20 | Uab Axis Ind | Ultrasonic flow meter with triangular cross-section |
| CN206281534U (en) * | 2016-12-13 | 2017-06-27 | 杭州思筑智能设备有限公司 | A kind of oblique angle reflectance ultrasound low |
| 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 |
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