CN102680034A - 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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- CN102680034A CN102680034A CN2012101737247A CN201210173724A CN102680034A CN 102680034 A CN102680034 A CN 102680034A CN 2012101737247 A CN2012101737247 A CN 2012101737247A CN 201210173724 A CN201210173724 A CN 201210173724A CN 102680034 A CN102680034 A CN 102680034A
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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
The groundwork method of utilizing ultrasound wave to measure has adopted " differential method " to measure flow; Concrete principle is that ultrasound wave flows a time with water (perhaps other fluids); And compare with normal speed; Will produce flow velocity that a mistiming calculates current, multiply by caliber with flow velocity again, just obtain flow, so be the differential method.The sequential control that this method is strict, the general velocity of propagation of 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 two TR1 and TR2 are two ultrasonic transducers about installing on the proving installation, can launch and can accept ultrasound wave, TR1 emission pulse ultrasonic; After fluid and reflector plate and tube wall reflection, received by TR2.Behind the certain hour interval, switch TR2 emission ultrasound wave by change-over switch, TR1 accepts.The ultrasound wave hotlist is just adopting above-mentioned measurement mechanism and method to measure flow at present, and then obtains corresponding heat through the disposal system that is installed on the hotlist, so product structure has deviation and the unstable problem that will bring the influence metering slightly.The hotlist that utilizes the ultrasound wave metering at present is mostly earlier at pipeline outer set unification sleeving plastic support; Be provided for installing the velocity hooster of even velocity of flow and the mounting groove of ultrasonic reflections sheet by plastic stent; After treating that the ultrasonic reflections sheet is fixed on the support through mounting groove; Plastic stent is put into the fixed orifice of pipeline through plastic stent and metallic conduit be connected and cooperate, in use mainly there is following problem in this structure:
(1) at present the ultrasonic reflections sheet that adopts of ultrasound wave hotlist relies on plastic stent support fixation, bigger for plastic stent complex forms, the long-term temperature distortion of material, is afraid of vibrations, has caused the instability of hotlist metering.
(2) plastic stent relies on the cylinder tightening nail location on the metallic conduit table body; Because the location between the tightening on plastic stent hole and the metallic conduit is followed closely cooperates bigger; The pulsation phenomenon that fluid flows vibrates to plastic stent, has caused the instability of measuring system.
(3) plastic stent inside has installed also that the velocity hooster, the velocity hooster that are used for even velocity of flow also adopt problems such as producing fouling with plastic material, long-play, to cause fluid to flow through to increase institute to manage the resistance of generation bigger; Thereby influence the stable of flow velocity, thereby caused the inaccurate influence of ultrasonic measurement stream to measure.
(4) as carrying out part replacement, need from metallic conduit, take out plastic stent, change the parts such as velocity hooster or reflector plate on the plastic stent again, make troubles for maintenance and maintenance.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; A kind of device that utilizes ultrasound wave to carry out flow measurement is provided; It is unstable to be intended to solve the measuring accuracy that the location of plastic stent distortion, plastics and metal cooperates the not high reason of positional precision big, reflecting surface to cause; Produce vibration when solving fluid pulsation, reduce pressure drop, the stable stabilized fluid drag losses that needs in the velocity hooster that velocity hooster is imported and exported, improve the reliability of fluid metering.
The object of the invention is achieved through following technical proposals:
A kind of device that utilizes ultrasound wave to carry out flow measurement comprises ultrasonic reflections section, velocity hooster and ultrasonic transducer, wherein:
Said ultrasonic transducer is arranged in the hole of velocity hooster tube wall, carries out after the oblique section contacts and locate when said velocity hooster and ultrasonic reflections section, and the center of said ultrasonic transducer is corresponding with the reflector plate center on being arranged on the ultrasonic reflections section;
Said ultrasonic reflections section and velocity hooster adopt oblique section contact overall co-ordination structure; Specifically; It is 45 ° inclined-plane that the pitch angle is arranged at the two ends of velocity hooster; It is 45 ° inclined-plane that ultrasonic reflections Duan Yiduan is arranged to the pitch angle, so that it can contact with the inclined-plane at velocity hooster two ends and locate, can select whole cylindrical tube to cut according to 45 ° at pitch angle then and form ultrasonic reflections section and velocity hooster; The inclined-plane of said ultrasonic reflections section is provided with the ultrasonic reflections sheet, can adopt welding (spot welding) or impact style to be arranged on the inclined-plane specifically.
The central authorities of said velocity hooster outer wall are provided with the location taper hole, are used for fixing through screw or bolt and external pipe; Then with both sides ultrasonic reflections section with after the velocity hooster both sides closely contact, and be fixed in the external pipe through stationary installation (like nut); For further realization seals preferably and measures, can be chosen on the outer wall of velocity hooster groove is set, be used to be provided with O-ring seal.
Said velocity hooster, ultrasonic reflections section can be selected the metal material that should not produce fouling for use; For example metallic copper or stainless steel material are made; Be the further generation of antiscale; Can be further can adopt coating to carry out coating at reflecting surface plane, the velocity hooster inside surface of transducer end face, ultrasonic reflections sheet; Utilize the self-cleaning function of coating can improve the stain resistance of paint of coating and fouling, uniform fluid that self-cleaning performance prevents the surface flow in velocity hooster, reduce resistance, for example nanometer titania coating, nm-class Ti polymer paint, fluorine carbon lacquer coating etc. carry out surface coating and handle.
Compared with prior art, technical scheme of the present invention has following advantage:
(1) conical bore of orientating as that velocity hooster and external pipe adopt is located; Can guarantee like this to combine to adopt cylinder oblique section and pipeline section axis to claim 45 ° of angles with the two ends reflecting segment; Guarantee that pipeline section axis and this kernel of section focus and transducer center are crossing, and vertical.
(2) ultrasonic reflections section combines to adopt cylinder oblique section form with velocity hooster, two surfaces contact when mounted and locate; This locator meams is simply effective; Because the face that adopt location contact has improved the stability of location, 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 the plastic support frame to fix; Adopt the tightening nail of coned face to position the structure that combines with the cylinder oblique section simultaneously; Gap, other types right cylinder location is caused and is made measuring system stable thereby elimination is known clearly, and guarantees the positional precision of location.
(4) be utilized in and adopt in the ultrasonic wave table pipeline section nano paint that transducer and reflector plate and velocity hooster inwall are protected; Played the effect that on these surfaces, is not easy fouling; Reduced at speedup pipeline section inner fluid resistance, thus the measuring accuracy of raising hotlist flow.
(5) when changing, only need change corresponding parts, and guarantee that the installation site of ultrasonic reflections section, velocity hooster and ultrasonic transducer accurately gets final product, do not need large tracts of land to change, make that the use maintenance is convenient.
Description of drawings
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 among Fig. 2 the present invention.
The schematic perspective view of ultrasonic reflections section among Fig. 3 the present invention.
The structural representation of velocity hooster among Fig. 4 the present invention.
The schematic perspective view of velocity hooster among Fig. 5 the present invention.
Embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment.
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 and velocity hooster 3 employing oblique section contact overall co-ordination structures; Specifically; It is 45 ° inclined-plane that the pitch angle is arranged at the two ends of velocity hooster 3; It is 45 ° inclined-plane that ultrasonic reflections section 1 one ends are arranged to the pitch angle, so that it can contact with the inclined-plane at velocity hooster two ends and locate; When preparing, can select whole cylindrical tube to cut according to 45 ° at pitch angle then and form ultrasonic reflections section 1 and velocity hooster 3; The inclined-plane of ultrasonic reflections section 1 is provided with the ultrasonic reflections sheet, can adopt welding (spot welding) or impact style to be arranged on the inclined-plane.
When installing and using; At first utilize holding screw that velocity hooster 3 is installed and fixed with table body (being external pipe) through the location taper hole that is arranged in the outer wall central authorities; Then with about two ultrasonic reflections sections be that 45 ° inclined-plane contacts with the inclined-plane of velocity hooster both sides through the pitch angle, and fix through stationary installation (like nut) and external pipe; Seal through O-ring seal between velocity hooster outer wall and the pipeline.
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 the oblique section contacts and are positioned through nut; The center of said ultrasonic transducer is corresponding with the reflector plate center on being arranged on the ultrasonic reflections section; Be that angle between the inclined-plane of vertical direction center line and ultrasonic reflections section of ultrasonic transducer is 45 degree, angle is 45 to spend between the vertical direction center line of ultrasonic transducer and the reflector plate normal.
Through above-mentioned setting; Ultrasonic reflections section, velocity hooster and ultrasonic transducer are arranged within the external pipe (promptly showing body) of plan measurement; Just can carry out the test of fluid flow in the pipeline through ultrasound wave, utilize the conversion conversion technology of flow rate test and related physical quantity (perhaps detection limit) in the prior art just can realize measurement again physical quantitys such as heats.
Be 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.Be the further generation of antiscale; Can be further can adopt coating to carry out coating at reflecting surface plane, the velocity hooster inside surface of transducer end face, ultrasonic reflections sheet; Utilize the self-cleaning function of coating can improve the stain resistance of paint of coating and fouling, uniform fluid that self-cleaning performance prevents the surface flow in velocity hooster; Reduce resistance; Can use the nanometer titania coating of Hangzhou ten thousand scape new material company limiteds, perhaps the fluorine carbon of the nm-class Ti polymer paint of Harbin development in science and technology company limited of prosperous section or the good coating technology of swallow development centre, city, Beijing lacquer coating.
After accomplishing coating, dry; Then measurement mechanism is installed in the fluid line that need carry out the fluid flow test according to the said structure relation; Utilize the flow, temperature sensor and the test module that use in the prior art accurately to measure to realize fluid flow, exchange heat then, specifically further the prior art of reference is following:
Chinese patent " ultrasonic calorimeter " (application number 200820227818.7, Dec 1 2008 applying date, November 4 2009 Granted publication day) is provided with first ultrasonic sensor and second ultrasonic sensor in the pipe fitting interval, and the analog electrical signal that sensor is exported converts digital electric signal to after the flow measurement module is sent among the CPU of control and display 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 put down in writing employing ultrasonic measurement flow, and passes through the 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 through gathering external temperature and ultrasonic flow signal; Relate to through modulus circuit, super low-power consumption microprocessor, low-voltage broad pulse lift-off technology and employing VLSI (very large scale integrated circuits); Single-chip microcomputer internal processes automatic control control is calculated, and the information used the user shows through the full Chinese of LCD.
Owing to adopt said structure and mounting means; Avoided the instability of conventional plastic supporting structure; The stability and the precision of location have been improved; The vibration influence of fluid stream weakens greatly, has eliminated the gap that right cylinder is located, has reduced at speedup pipeline section inner fluid resistance, and measuring system is stable to be improved with precision thereby make; When changing,, do not need large tracts of land to change, make that the use maintenance is convenient.
More than the present invention has been done exemplary description; Should be noted that; Under the situation that does not break away 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:
Said ultrasonic transducer is arranged in the hole of velocity hooster tube wall, carries out after the oblique section contacts and locate when said velocity hooster and ultrasonic reflections section, and the center of said ultrasonic transducer is corresponding with the reflector plate center on being arranged on the ultrasonic reflections section;
Said ultrasonic reflections section and velocity hooster adopt oblique section contact overall co-ordination structure;
The inclined-plane of said ultrasonic reflections section is provided with the ultrasonic reflections sheet;
The central authorities of said velocity hooster outer wall are provided with the location taper hole, are used for fixing through screw or bolt and external pipe; Then with both sides ultrasonic reflections section with after the velocity hooster both sides closely contact, and be fixed in the external pipe through 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 angle that the center of said ultrasonic transducer and the reflector plate center on the ultrasonic reflections section of being arranged on should be between the inclined-plane of vertical direction center line and ultrasonic reflections section of ultrasonic transducer relatively is 45 degree, and angle is 45 to spend between the vertical direction center line of ultrasonic transducer and the reflector plate normal.
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 that to be arranged to the pitch angle be 45 ° inclined-plane for the two ends of velocity hooster that said ultrasonic reflections section and velocity hooster adopt oblique section contact overall co-ordination structure; It is 45 ° inclined-plane that ultrasonic reflections Duan Yiduan is arranged to the pitch angle; So that it can contact with the inclined-plane at velocity hooster two ends and locate, can select whole cylindrical tube to cut according to 45 ° at pitch angle then 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, on the inclined-plane of said ultrasonic reflections section, adopts welding or impact style that the ultrasonic reflections sheet is set.
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 is used to be provided with O-ring seal, 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 said velocity hooster, ultrasonic reflections section are selected the metal material that should not produce fouling for use.
7. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 6 is characterized in that said 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; On the reflecting surface plane of transducer end face, ultrasonic reflections sheet, the velocity hooster inside surface adopts coating to carry out coating, the stain resistance that utilizes the self-cleaning function of coating can improve paint of coating prevents surperficial fouling with self-cleaning performance.
9. a kind of device that utilizes ultrasound wave to carry out flow measurement according to claim 8 is characterized in that, said coating is nanometer titania coating, nm-class Ti polymer paint or fluorine carbon lacquer coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN102680034A (en) | 2012-09-19 |
| CN102680034B 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061972A (en) * | 2013-12-16 | 2014-09-24 | 北京德宝豪特能源科技有限公司 | Ultrasonic liquid flow measurement device |
| 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 |
| 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 |
| 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 |
| WO2020150945A1 (en) * | 2019-01-21 | 2020-07-30 | 青岛积成电子股份有限公司 | Ultrasonic water metering module structure and ultrasonic water meter |
| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| 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 |
| WO2020150945A1 (en) * | 2019-01-21 | 2020-07-30 | 青岛积成电子股份有限公司 | Ultrasonic water metering module 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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| CN102680034B (en) | 2014-03-26 |
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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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Granted publication date: 20140326 Termination date: 20210530 |