CN102680034B - Device for measuring flow by means of ultrasonic waves - Google Patents
Device for measuring flow by means of ultrasonic waves Download PDFInfo
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- CN102680034B CN102680034B CN201210173724.7A CN201210173724A CN102680034B CN 102680034 B CN102680034 B CN 102680034B CN 201210173724 A CN201210173724 A CN 201210173724A CN 102680034 B CN102680034 B CN 102680034B
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Abstract
The invention discloses a device for measuring flow by means of ultrasonic waves, comprising ultrasonic wave reflecting segments, a speed increasing tube and an ultrasonic transducer, wherein the ultrasonic transducer is arranged in a hole of the wall of the speed increasing tube; after the speed increasing tube is in oblique section contact with the ultrasonic wave reflecting segment and is positioned, the center of the ultrasonic transducer corresponds to the center of a reflecting plate arranged on the ultrasonic wave reflecting segment; each ultrasonic wave reflecting segment and the speed increasing tube form an oblique section contact type integrated matched structure; a positioning tapered hole is formed at the center of the outer wall of the speed increasing tube; and then the ultrasonic wave reflecting segments on two sides are in close contact with two sides of the speed increasing tube and are fixed in an external pipeline. The device provided by the invention aims to solve the problem of unstable measurement accuracy caused by deformation of a plastic support, relatively great positioning coordination of plastic and metal, not high position accuracy of a reflecting surface and the like, thereby solving the vibration generated by fluid pulsation, reducing the pressure drop at an inlet and an outlet of the speed increasing tube, stabilizing the resistance loss of stable fluid in the speed increasing tube and improving the reliability of fluid metering.
Description
Technical field
The present invention relates to a kind of speed measuring device, more particularly, relate to a kind of device that utilizes ultrasound wave to carry out flow measurement.
Background technology
Utilize the groundwork method that ultrasound wave is measured to adopt " differential method " to carry out measuring flow, concrete principle is that ultrasound wave flows a time together with water (or other fluids), and compare with normal speed, will produce flow velocity that a mistiming calculates current, with flow velocity, be multiplied by caliber again, just obtain flow, so be differential method.This method requires strict sequential control, the velocity of propagation of general ultrasound wave in water is 1500m/s, sequential control circuit will calculate with the cycle of single-chip microcomputer, be generally 10-12 second, Millisecond does not reach, and on proving installation, installation two of left and right TR1 and TR2 are two ultrasonic transducers, can launch and can accept ultrasound wave, TR1 emission pulse ultrasonic, after fluid and reflector plate and tube wall reflection, by TR2, received.Behind certain hour interval, by change-over switch, switch TR2 transmitting ultrasound wave, TR1 accepts.At present ultrasound wave hotlist is just adopting above-mentioned measurement mechanism and method to carry out measuring flow, and then obtains corresponding heat by the disposal system being arranged on hotlist, so product structure slightly deviation and the unstable problem that will bring impact to measure.Utilize at present the hotlist of supersonic wave metering mostly first at pipeline external, to combine a set of plastic stent, by plastic stent, be provided for installing the velocity hooster of even velocity of flow and the mounting groove of ultrasonic reflections sheet, after treating that ultrasonic reflections sheet is fixed on support by mounting groove, plastic stent being put into the fixed orifice of pipeline by plastic stent and metallic conduit and be connected and coordinate, in use mainly there is following problem in this structure:
(1) it is fixing, larger for plastic stent complex forms, material temperature distortion that the ultrasonic reflections sheet that at present ultrasound wave hotlist adopts relies on plastic stent to support, and is afraid of vibrations, caused the unstable of hotlist metering.
(2) plastic stent relies on the cylinder tightening nail location on metallic conduit table body, because plastic stent hole coordinates larger with the location between tightening nail on metallic conduit, the mobile pulsation phenomenon of fluid vibrates to plastic stent, has caused the unstable of measuring system.
(3) plastic stent inside has also been installed velocity hooster, velocity hooster for even velocity of flow and is also adopted plastic material, long-play to produce the problems such as fouling, causes fluid to flow through to increase the resistance of manage generation larger, thereby affect the stable of flow velocity, thereby caused the inaccurate impact of ultrasonic measurement stream to measure.
(4) as carried out part replacement, need to from metallic conduit, take out plastic stent, then change the parts such as velocity hooster on plastic stent or reflector plate, make troubles to maintenance and maintenance.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of device that utilizes ultrasound wave to carry out flow measurement is provided, the location of being intended to solve plastic stent distortion, plastics and metal coordinates measuring accuracy large, that the not high reason of positional precision of reflecting surface causes unstable, while solving fluid pulsation, produce vibration, reduce pressure drop, the stable stabilized fluid drag losses in velocity hooster, the reliability of raising fluid metering of needing that velocity hooster is imported and exported.
Object of the present invention is achieved by following technical proposals:
A device that utilizes ultrasound wave to carry out flow measurement, comprises ultrasonic reflections section, velocity hooster and ultrasonic transducer, wherein:
Described ultrasonic transducer is arranged in the hole of velocity hooster tube wall, when described velocity hooster and ultrasonic reflections section, carries out after oblique section contacts and locate, and the center of described ultrasonic transducer is corresponding with the reflector plate center being arranged in ultrasonic reflections section;
Described ultrasonic reflections section and velocity hooster adopt oblique section contact overall co-ordination structure, specifically, it is the inclined-plane of 45 ° that pitch angle is arranged at the two ends of velocity hooster, it is the inclined-plane of 45 ° that pitch angle is arranged in ultrasonic reflections section one end, contacting with the inclined-plane at velocity hooster two ends and locate, can select whole cylindrical tube then according to 45 °, pitch angle, to cut and form ultrasonic reflections section and velocity hooster; On the inclined-plane of described ultrasonic reflections section, be provided with ultrasonic reflections sheet, can adopt specifically welding (spot welding) or impact style to be arranged on inclined-plane.
In the central authorities of described velocity hooster outer wall, be provided with location taper hole, for being fixed by screw or bolt and external pipe; Then by after both sides ultrasonic reflections section and velocity hooster both sides close contact, and be fixed in external pipe by stationary installation (as nut); For further realization seals preferably and measures, can be chosen on the outer wall of velocity hooster groove is set, for O-ring seal is set.
Described velocity hooster, ultrasonic reflections section can be selected the metal material that should not produce fouling, metallic copper for example, or stainless steel material is made, for the further generation of antiscale, can be further at transducer end face, the reflecting surface plane of ultrasonic reflections sheet, velocity hooster inside surface can adopt coating to carry out coating, the stain resistance and the self-cleaning performance that utilize the self-cleaning function of coating can improve paint of coating prevent surperficial fouling, uniform fluid flows in velocity hooster, reduce resistance, nanometer titania coating for example, nm-class Ti polymer paint, fluorine carbon paint coating etc. carries out surface coating processing.
Compared with prior art, technical scheme tool of the present invention has the following advantages:
(1) conical bore of orientating as that velocity hooster and external pipe adopt is located, can guarantee to be like this combined with two ends reflecting segment to adopt cylinder oblique section and pipeline section axis to claim 45 ° of angles, guarantee that pipeline section axis and this kernel of section focus and transducer center are crossing, and vertical.
(2) ultrasonic reflections section, is combined with velocity hooster and adopts cylinder oblique section form, and two surfaces contact when mounted and locate, this locator meams is simply effective, face contact because location adopts, has improved the stability of location, and the vibration influence of fluid stream weakens greatly.
(3) velocity hooster and ultrasonic reflections section adopt metal material, being directly installed on pipe interior carries out flow measurement, does not need plastic support frame to fix, adopt the tightening of coned face to follow closely the structure positioning with the combination of cylinder oblique section simultaneously, thereby eliminated other type right cylinder positioning gap, cause and make measuring system stable, guarantee the positional precision of location.
(4) utilize and in ultrasonic wave table pipeline section, to adopt nano paint to protect transducer and reflector plate and velocity hooster inwall, played the effect that is not easy fouling on these surfaces, reduced at speedup pipeline section inner fluid resistance, thus the measuring accuracy of raising hotlist flow.
(5) when changing, only need to change corresponding parts, and the installation site that guarantees ultrasonic reflections section, velocity hooster and ultrasonic transducer is accurately, do not need large area to change, make use and maintenance convenient.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention, wherein TR1 and TR2 are that ultrasonic transducer, 1 is that ultrasonic reflections section, 2 is that velocity hooster, 4 is that holding screw, 5 is that O-ring seal, 6 is nut for showing body, 3.
The structural representation of ultrasonic reflections section in Fig. 2 the present invention.
The schematic perspective view of ultrasonic reflections section in Fig. 3 the present invention.
The structural representation of velocity hooster in Fig. 4 the present invention.
The schematic perspective view of velocity hooster in Fig. 5 the present invention.
Embodiment
Below in conjunction with specific embodiment, further illustrate technical scheme of the present invention.
As shown in Fig. 1-5, embodiments of the invention are a kind of device that utilizes ultrasound wave to carry out flow measurement, comprise ultrasonic reflections section 1, velocity hooster 3, ultrasonic transducer TR1 and TR2, wherein:
Ultrasonic reflections section 1 adopts oblique section contact overall co-ordination structure with velocity hooster 3, specifically, it is the inclined-plane of 45 ° that pitch angle is arranged at the two ends of velocity hooster 3, it is the inclined-plane of 45 ° that pitch angle is arranged in ultrasonic reflections section 1 one end, contacting with the inclined-plane at velocity hooster two ends and locate; When being prepared, can select whole cylindrical tube then according to 45 °, pitch angle, to cut and form ultrasonic reflections section 1 and velocity hooster 3; On the inclined-plane of ultrasonic reflections section 1, be provided with ultrasonic reflections sheet, can adopt welding (spot welding) or impact style to be arranged on inclined-plane.
When installing and using, first utilize holding screw that velocity hooster 3 is installed fixing by the location taper hole being arranged in outer wall central authorities with table body (being external pipe), then the inclined-plane that is 45 ° by pitch angle by two of left and right ultrasonic reflections section contacts with the inclined-plane of velocity hooster both sides, and fixes by stationary installation (as nut) and external pipe; Between velocity hooster outer wall and pipeline, by O-ring seal, seal.
Ultrasonic transducer TR1 and TR2 are arranged in the hole of velocity hooster 3 tube walls, after velocity hooster 3 and ultrasonic reflections section 1 are carried out that oblique section contacts and are positioned by nut, the center of described ultrasonic transducer is corresponding with the reflector plate center being arranged in ultrasonic reflections section, be that angle between the vertical direction center line of ultrasonic transducer and the inclined-plane of ultrasonic reflections section is 45 degree, between the vertical direction center line of ultrasonic transducer and reflector plate normal, angle is 45 degree.
By above-mentioned setting, within ultrasonic reflections section, velocity hooster and ultrasonic transducer are arranged on the external pipe (showing body) of plan measurement, just can carry out by ultrasound wave the test of fluid flow in pipeline, in recycling prior art, the conversion conversion technology of flow rate test and related physical quantity (or detection limit) just can realize the measurement to physical quantitys such as heats.
For the fouling of avoiding water or other fluid to cause, can select metallic copper or stainless steel material to make velocity hooster, ultrasonic reflections section.For the further generation of antiscale, can be further at reflecting surface plane, the velocity hooster inside surface of transducer end face, ultrasonic reflections sheet, can adopt coating to carry out coating, the stain resistance and the self-cleaning performance that utilize the self-cleaning function of coating can improve paint of coating prevent that surperficial fouling, uniform fluid from flowing in velocity hooster, reduce resistance, can use the nanometer titania coating of Hangzhou Wan Jing new material company limited, or the fluorine carbon paint coating of the nm-class Ti polymer paint of Harbin Xin Ke development in science and technology company limited or the good coating technology of city of Beijing swallow development centre.
After completing coating, dry, then measurement mechanism is installed to and need to carries out in the fluid line of fluid flow test according to said structure relation, then utilize the flow, temperature sensor and the test module that in prior art, use realizing fluid flow, exchange heat is carried out Measurement accuracy, specifically can with further reference to prior art as follows:
In pipe fitting, interval arranges the first ultrasonic sensor and the second ultrasonic sensor to Chinese patent " ultrasonic calorimeter " (application number 200820227818.7, Dec 1 2008 applying date, November 4 2009 Granted publication day), converts the analog electrical signal of sensor output to digital electric signal and is sent in the CPU of control and display module by flow measurement module.
Chinese patent " integral ultrasonic heat energy meter " (application number 200710158779.X, Dec 10 2007 applying date, September 29 2010 Granted publication day) embodiment has partly recorded employing ultrasonic measurement flow, and by formula and the principle of flow rate calculation heat.
Chinese patent " ultrasonic heat energy meter " (application number 200720044459.7, September 30 2007 applying date, August 6 2008 Granted publication day) is by gathering external temperature and ultrasonic flow signal, through modulus circuit, super low-power consumption microprocessor, low-voltage broad pulse lift-off technology and employing VLSI (very large scale integrated circuit), relate to, the automatic control of single-chip microcomputer internal processes is controlled and is calculated, and user's information exchange used is crossed to the full Chinese display of LCD out.
Owing to adopting said structure and mounting means, avoided the instability of conventional plastic supporting structure, stability and the precision of location have been improved, the vibration influence of fluid stream weakens greatly, eliminated the gap that right cylinder is located, reduced at speedup pipeline section inner fluid resistance, thereby measuring system is stablized and precision raising; When changing, do not need large area to change, make use and maintenance convenient.
Above the present invention has been done to exemplary description; should be noted that; in the situation that not departing from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (9)
1. a device that utilizes ultrasound wave to carry out flow measurement, comprises ultrasonic reflections section, velocity hooster and ultrasonic transducer, it is characterized in that, wherein:
Described ultrasonic transducer is arranged in the hole of velocity hooster tube wall, when described velocity hooster and ultrasonic reflections section, carries out after oblique section contacts and locate, and the center of described ultrasonic transducer is corresponding with the reflector plate center being arranged in ultrasonic reflections section;
Described ultrasonic reflections section and velocity hooster adopt oblique section contact overall co-ordination structure;
On the inclined-plane of described ultrasonic reflections section, be provided with ultrasonic reflections sheet;
In the central authorities of described velocity hooster outer wall, be provided with location taper hole, for being fixed by screw or bolt and external pipe; Then by after both sides ultrasonic reflections section and velocity hooster both sides close contact, and be fixed in external pipe by stationary installation.
2. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 1, it is characterized in that, the center of described ultrasonic transducer is 45 degree with the relative angle should be between the vertical direction center line of ultrasonic transducer and the inclined-plane of ultrasonic reflections section in reflector plate center being arranged in ultrasonic reflections section, and between the vertical direction center line of ultrasonic transducer and reflector plate normal, angle is 45 degree.
3. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 1, it is characterized in that, it is the inclined-plane of 45 ° that described ultrasonic reflections section and velocity hooster adopt two ends that contact overall co-ordination structure in oblique section is velocity hooster to be arranged to pitch angle, it is the inclined-plane of 45 ° that pitch angle is arranged in ultrasonic reflections section one end, contacting with the inclined-plane at velocity hooster two ends and locate, can select whole cylindrical tube then according to 45 °, pitch angle, to cut and form ultrasonic reflections section and velocity hooster.
4. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 1, is characterized in that, adopts welding or impact style that ultrasonic reflections sheet is set on the inclined-plane of described ultrasonic reflections section.
5. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 1, is characterized in that, on the outer wall of velocity hooster, groove is set, and for O-ring seal is set, realizes the sealing with external pipe.
6. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 1, is characterized in that, described velocity hooster, ultrasonic reflections section are selected the metal material that should not produce fouling.
7. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 6, is characterized in that, described metal material is metallic copper or stainless steel material.
8. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 1, it is characterized in that, at the reflecting surface plane of transducer end face, ultrasonic reflections sheet, velocity hooster inside surface, adopt coating to carry out coating, the stain resistance and the self-cleaning performance that utilize the self-cleaning function of coating can improve paint of coating prevent surperficial fouling.
9. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 8, is characterized in that, described coating is nanometer titania coating, nm-class Ti polymer paint or fluorine carbon paint coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210173724.7A CN102680034B (en) | 2012-05-30 | 2012-05-30 | Device for measuring flow by means of ultrasonic waves |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210173724.7A CN102680034B (en) | 2012-05-30 | 2012-05-30 | Device for measuring flow by means of ultrasonic waves |
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| CN102680034A CN102680034A (en) | 2012-09-19 |
| CN102680034B true CN102680034B (en) | 2014-03-26 |
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| CN201210173724.7A Expired - Fee Related CN102680034B (en) | 2012-05-30 | 2012-05-30 | Device for measuring flow by means of ultrasonic waves |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101399A (en) * | 2013-04-05 | 2014-10-15 | 玉环友恒阀门有限公司 | Novel support and pipe section of ultrasonic calorimeter and water meter |
| WO2015032401A1 (en) * | 2013-09-05 | 2015-03-12 | Miitors Aps | Ultrasonic flow meter |
| CN104061972B (en) * | 2013-12-16 | 2017-02-08 | 北京德宝豪特能源科技有限公司 | Ultrasonic liquid flow measurement device |
| CN104713665A (en) * | 2015-03-19 | 2015-06-17 | 沈阳市航宇星仪表有限责任公司 | Glass ceramic ultrasonic reflection device |
| CN109115287A (en) * | 2018-09-17 | 2019-01-01 | 浙江威星智能仪表股份有限公司 | A kind of ultrasonic water meter based on speed difference built-in reflective device |
| CN209485456U (en) * | 2019-01-21 | 2019-10-11 | 青岛积成电子股份有限公司 | A kind of ultrasonic water metering modular structure and ultrasonic water meter |
| CN109540264A (en) * | 2019-01-29 | 2019-03-29 | 重庆兆洲科技发展有限公司 | A kind of ultrasonic material level meter |
| CN112557697A (en) * | 2020-11-24 | 2021-03-26 | 安徽曼德克环境科技有限公司 | Ultrasonic flue gas velocity of flow measuring circuit |
| CN112525276A (en) * | 2020-12-14 | 2021-03-19 | 北京化工大学 | Outer ultrasonic flowmeter installation error analogue means that presss from both sides based on laser light path |
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| US5463906A (en) * | 1994-01-24 | 1995-11-07 | Triton Technology, Inc. | Interchangeable disposable acoustic for use with an ultrasonic flowmeter, particularly during extracorporeal measurement of blood flow |
| CN2278927Y (en) * | 1996-05-22 | 1998-04-15 | 栾继军 | Strong supersonic Doppler flow sensor |
| CN101365927A (en) * | 2005-12-06 | 2009-02-11 | 迪格梅萨股份公司 | Ultrasound measuring section made from plastic and corresponding measuring method |
| CN101576399A (en) * | 2009-05-08 | 2009-11-11 | 邓鲁坚 | Flow sensor of ultrasonic water meter and heat meter |
| CN201707082U (en) * | 2010-02-04 | 2011-01-12 | 威海米特智能仪表有限公司 | Maintainable container-rectifying anti-clogging small-pressure damage basic meter of ultrasonic flowmeter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005007241B4 (en) * | 2005-02-17 | 2007-05-31 | Hydrometer Gmbh | Flowmeter |
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- 2012-05-30 CN CN201210173724.7A patent/CN102680034B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5463906A (en) * | 1994-01-24 | 1995-11-07 | Triton Technology, Inc. | Interchangeable disposable acoustic for use with an ultrasonic flowmeter, particularly during extracorporeal measurement of blood flow |
| CN2278927Y (en) * | 1996-05-22 | 1998-04-15 | 栾继军 | Strong supersonic Doppler flow sensor |
| CN101365927A (en) * | 2005-12-06 | 2009-02-11 | 迪格梅萨股份公司 | Ultrasound measuring section made from plastic and corresponding measuring method |
| CN101576399A (en) * | 2009-05-08 | 2009-11-11 | 邓鲁坚 | Flow sensor of ultrasonic water meter and heat meter |
| CN201707082U (en) * | 2010-02-04 | 2011-01-12 | 威海米特智能仪表有限公司 | Maintainable container-rectifying anti-clogging small-pressure damage basic meter of ultrasonic flowmeter |
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Effective date of registration: 20180920 Address after: 300170 No. 3 cottage, 10 Dazhi street, Hedong District, Tianjin Patentee after: Tianjin joint longitudinal pipe industry Co., Ltd. Address before: 301800 Tianjin Baodi District Baodi energy conservation and environmental protection industrial zone Patentee before: Tianjin Ouyi Technology Development Co., Ltd. |
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