CN106768105B - Method and device for collecting tangential velocity measurement flow - Google Patents
Method and device for collecting tangential velocity measurement flow Download PDFInfo
- Publication number
- CN106768105B CN106768105B CN201611218402.4A CN201611218402A CN106768105B CN 106768105 B CN106768105 B CN 106768105B CN 201611218402 A CN201611218402 A CN 201611218402A CN 106768105 B CN106768105 B CN 106768105B
- Authority
- CN
- China
- Prior art keywords
- flow
- blade
- fluid
- tangential
- tangential flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- 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
- G01F1/662—Constructional details
-
- 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
- G01F1/05—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 using mechanical effects
- G01F1/20—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 using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—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 using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/3236—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 using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using guide vanes as swirling means
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a method and a device for acquiring tangential velocity measurement flow, which are characterized in that a tangential flow generator arranged at the fluid inlet end in a measurement tube body is used for generating direction change to form a fluid which flows in a circumferential rotating manner through the fluid which flows linearly along the axial direction of the measurement tube body by the tangential flow generator, tangential flow velocity signal information of the fluid which flows in a rotating manner is acquired through an ultrasonic speed measurement component and is uploaded to a calculator for calculation, so that when the corresponding ultrasonic speed measurement component is shorter than the shortest standard axial installation distance, the transceiving path can be arbitrarily lengthened according to the requirement, and the device has the advantages of novel structure, high measurement precision, front interference resistance, convenience in assembly, disassembly and replacement of components, low maintenance cost, compact structure, high modularization degree, low construction cost and the like.
Description
Technical Field
The invention relates to the technical field of flow measurement, in particular to a method and a device for collecting tangential velocity to measure flow.
Background
At present, the application of ultrasonic measurement technology in fluid flow measurement is more and more extensive, and ultrasonic water meters, ultrasonic heat meters, ultrasonic gas meters and ultrasonic flow meters gradually become mainstream products in the market, and the information of fluid flow speed is loaded when ultrasonic waves are transmitted in flowing fluid. Therefore, the flow velocity of the fluid can be detected by the received ultrasonic waves, and the flow velocity can be converted into a flow rate. According to the principle of signal detection, the current ultrasonic flow meter can be roughly divided into a propagation velocity difference method (including a direct time difference method, a phase difference method and a frequency difference method), a beam offset method, a Doppler method, a correlation method, a spatial filtering method, a noise method and the like. In order to accurately obtain the flow velocity information of the fluid, the conventional ultrasonic flow meter arranges a transducer along the axial direction of the pipe body, so as to obtain the flow velocity information of the fluid and calculate the flow rate of the fluid.
As is well known, the distance between transducers of the above-mentioned existing ultrasonic flow meters must ensure sufficient effective length to achieve measurement accuracy, the minimum effective measurement distance of the existing ultrasonic flow meter is 45mm, the minimum length of the meter body is 200mm, for small flow measurement, in order to achieve more accurate measurement accuracy, firstly, the measurement distance is lengthened axially on the measurement pipe section, so that the effective measurement distance is greater than 45mm, and in order to lengthen the effective measurement distance, the transducer mounting seat is usually arranged obliquely, so that the included angle of the extension line of the corresponding ultrasonic transducer group arranged axially is enlarged, the occupied space is large, the number of the ultrasonic transducer groups mounted on the measurement pipe section is limited, the measurement accuracy is affected, and the dismounting and maintenance of the ultrasonic transducers are very difficult, the production and manufacturing cost is greatly improved, and the price of the ultrasonic flowmeter is higher; and secondly, at least two groups of crossed or parallel ultrasonic transducer groups are arranged on the measuring pipe section along the axial direction, so that the installation quantity of the ultrasonic transducers is increased, and the ultrasonic transducers arranged on the measuring pipe section and the measuring pipe section are required to be integrally disassembled during maintenance or replacement, thereby greatly increasing the replacement and maintenance cost.
Therefore, the engineering field basically still adopts the mechanical flowmeter to save construction and operation cost, the working principle of the mechanical flowmeter is that the fluid flow drives the impeller to rotate, and the substantial deficiency of the structure is as follows: firstly, the impeller cannot be pushed to rotate due to small flow, so that the data error under the extremely small flow rate is very large, and the metering precision is influenced; secondly, due to mutual friction of mechanical parts, long-time movement causes abrasion or scaling of an impeller shaft, and the accuracy of metering is also influenced; thirdly, because the mechanical meter adopts a digital disc for counting, only accumulated flow can be displayed, and instantaneous flow rate cannot be displayed, so that unmanned meter reading and remote control are difficult to realize.
In order to solve the technical problem, CN204788528U discloses a flow sensor for an ultrasonic heat meter with a flow guide cross, which comprises a pipe body, an ultrasonic transducer at a water inlet end and an ultrasonic transducer at a water outlet end, wherein a pipe cavity of the pipe body is composed of a water inlet flow cavity, a middle flow cavity and a water outlet flow cavity, a horizontal cross section at the central axis of the water inlet flow cavity is rectangular, and the width of the horizontal cross section is equal to the width of the horizontal cross section at the central axis of the middle flow cavity; the vertical section of the central axis of the water inlet flow cavity is trapezoidal, the width of the front end of the water inlet flow cavity is equal to that of the vertical section of the central axis of the middle flow cavity, and the width of the rear end of the water inlet flow cavity is equal to that of the horizontal section of the central axis of the middle flow cavity. The substantial disadvantages of this structure are: in order to ensure the measurement accuracy, the distance between the transducers of the ultrasonic flowmeter must ensure enough effective length, and the length of the measurement pipe section is lengthened virtually, so that the measurement pipe section and the whole meter must be detached from the pipeline during annual inspection or fault detection, so that the measurement pipe section can be inspected, maintained and replaced, and the replacement cost is increased.
To minimize the replacement cost, although patent No.: ZL 200420111534.3/ZL 200520086674.3/ZL 200820102881.8 discloses several removable mechanical watches, can directly dismouting mechanical watch's core adjust and change the core under the condition of the watch body pipe fitting on the not dismantlement pipeline, the use maintenance cost has been reduced to a certain extent. But mechanical meters cannot measure very small flows; the data processing and transmission can not meet the intelligent unmanned requirement; at present, the conventional mode is to replace an electromagnetic or ultrasonic instrument for the whole instrument, but the replacement cost is high and the installation cost is high.
So far, the problems of high manufacturing cost, difficult maintenance operation, low metering precision and low accuracy cannot be solved on a flowmeter.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a method and a device for acquiring tangential speed measurement flow, which have the advantages of novel structure, compact structure, high measurement precision, front interference resistance, convenience in disassembly, assembly and replacement of parts, low maintenance cost, high modularization degree and low installation cost.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for collecting tangential velocity to measure flow is characterized in that a tangential flow generator arranged at the fluid inlet end in a measuring tube body is used for enabling fluid which linearly flows along the axial direction of the measuring tube body to be subjected to direction changing through the tangential flow generator to form fluid which flows in a circumferential rotating mode, tangential flow velocity signal information of the fluid which flows in a rotating mode is collected through an ultrasonic speed measuring component and is uploaded to a calculator to be calculated, when the corresponding ultrasonic speed measuring component is shorter than the shortest standard axial installation distance, the receiving and transmitting path of the ultrasonic speed measuring component can be arbitrarily lengthened according to needs, the method has the effects of small occupied space and low manufacturing cost, and the measuring accuracy is remarkably improved.
The utility model provides a gather tangential velocity and measure device of flow, includes and measures the body, be equipped with the ultrasonic speed measurement part in the measuring tube body, its characterized in that the end of getting into of the internal fluid of measuring tube is equipped with the tangential flow generator to make the fluid that gets into the internal axial straight line of measuring tube produce the diversion through the tangential flow generator and form the circumferential direction and rotate and flow, the tangential flow generator comprises blade axle ring, tangential flow solid fixed ring and blade rotor, the solid fixed ring of tangential flow is fixed in measuring tube end, blade axle ring and tangential flow solid fixed ring set up with one heart, circumference array is equipped with the blade rotor between blade axle ring and tangential flow solid fixed ring, the water conservancy diversion face of blade rotor inclines with the entering direction of fluid mutually, changes the axial flow of fluid into the circumferential direction and flows through the blade rotor that inclines, makes corresponding ultrasonic speed measurement part when the shortest standard axial installation distance of being, the receiving and transmitting path can be arbitrarily lengthened according to the requirement, so that the device not only has the effects of small occupied space and low manufacturing cost, but also obviously improves the measurement precision.
The inclination angle of the flow guide surface of the blade rotor and the entering direction of the fluid in the measuring pipe body is 15 degrees ~ 75 degrees, so that the axial straight-line flowing fluid is converted into the circumferential rotating flowing fluid through the blade rotor, and the effect of changing the direction of the fluid is achieved.
The blade rotor wing can adopt a twisted curved surface, namely the inclination angle between the blade root of the blade rotor wing and the measuring pipe axis is 5 degrees ~ 45 degrees, the inclination angle between the outer end of the blade rotor wing and the measuring pipe axis is 35 degrees ~ 75 degrees, the blade rotor wing 1 is formed by gradually smoothly twisting and transiting the 5 degrees ~ 45 degrees of the blade root to 35 degrees ~ 75 degrees of the outer part of the blade, the edge of the flow-facing end c of the blade rotor wing is smoothly protruded, the flow guide surface and the back flow surface are transitionally connected through a fillet, the edge of the back end d of the blade is smoothly concave, and the back end of the back flow surface e of the blade is provided with a lift angle f, so that the effect of guiding the axially flowing fluid to generate the same tangential circular motion under the condition of low pressure loss is achieved.
According to the invention, the flow splitting cone body can be arranged at the fluid inlet end of the blade shaft collar, the axial section of the flow splitting cone body is in a parabola shape, so that the flow splitting of axially flowing fluid is facilitated, and the fluid enters the flow measurement mounting ring body through the gap between adjacent blade rotors, so that the flow splitting effect is achieved.
The invention can form a flow stabilizing shaft at the rear end of the flow dividing cone body along the axial direction of the axis of the measuring tube body, so that the flow stabilizing shaft can be used for stabilizing the fluid which is guided by the blade rotor wing and then turned, and the accuracy measured by the ultrasonic transducers on the two sides of the flow stabilizing shaft is more accurate.
The measuring pipe body can be annular or tubular, and two sides of the measuring pipe body are respectively and fixedly connected with the tangential flow fixing ring of the tangential flow generator through the buckles, so that the ultrasonic movement can be verified or replaced without disassembling the pipeline.
When the measuring pipe body is annular, the reflecting surface in the ultrasonic speed measuring part of the invention can be arranged along the circumferential direction of the inner wall of the measuring pipe body, the reflecting mirror can be arranged along the circumferential direction of the inner wall of the measuring pipe body by adopting a mirror surface, the mirror surface can also be machined into the circumferential direction of the inner wall of the measuring pipe body, the ultrasonic transducers of the ultrasonic speed measuring part are arranged on the circumferential direction of the measuring pipe body, the transmitting and receiving paths reflected by the ultrasonic transducers and the reflecting surface are on the same cross section of the measuring pipe body, so that the fluid which rotates in the circumferential direction after being turned by the tangential flow generator can reach the effect that the ultrasonic signals are reflected or reflected for multiple times by the reflecting surface to reach another ultrasonic transducer, the transmitting and receiving paths are arbitrarily lengthened according to the requirement, the effect of remarkably improving the measuring precision is achieved, and the flow speed and the flow of the fluid are calculated by measuring the, the measuring tube not only solves the substantial technical problem that small flow is difficult to measure accurately, but also greatly saves the equipment cost and the installation cost for measuring by axially arranging a plurality of groups of transducers on the measuring tube body in the prior art.
When the measuring tube body is tubular, the installation mode of the ultrasonic speed measuring component in the measuring tube body is the prior art, and the installation mode is not repeated.
By adopting the structure, the invention has the advantages of novel structure, compact structure, high measurement precision, front interference resistance, convenient assembly and disassembly and replacement of parts, low maintenance cost, high modularization degree, low installation cost and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a left side view of one embodiment of fig. 1.
Fig. 3 is a left side view of the alternative embodiment of fig. 1.
Fig. 4 is a schematic perspective view of an embodiment of the present invention.
Fig. 5 is an exploded view of fig. 4.
Fig. 6 is a perspective view of a blade rotor according to the present invention.
Fig. 7 is a right side view of fig. 6.
Fig. 8 is a schematic perspective view of a tangential flow generator of the present invention.
Reference numerals: the device comprises a blade rotor wing 1, an ultrasonic transducer group 2, an ultrasonic transducer 2-1, an ultrasonic transducer 2-2, a reflecting surface 3, a measuring tube body 4, a shunt cone body 5, a meter body 6, a blade shaft collar 7, a flow measuring installation ring body 8, a steady flow shaft 9, a blade rotor wing fixing ring 10, a transceiving path 11, a tangential flow generator 12, a tangential flow fixing ring 13, a buckle 14 and a sealing cover 15.
Detailed Description
The present invention will be described with reference to the accompanying drawings.
A method for collecting tangential velocity to measure flow is characterized in that a tangential flow generator arranged at the fluid inlet end in a measuring tube body is used for enabling fluid which linearly flows along the axial direction of the measuring tube body to be subjected to direction changing through the tangential flow generator to form fluid which flows in a circumferential rotating mode, tangential flow velocity signal information of the fluid which flows in a rotating mode is collected through an ultrasonic speed measuring component and is uploaded to a calculator to be calculated, when the corresponding ultrasonic speed measuring component is shorter than the shortest standard axial installation distance, the receiving and transmitting path of the ultrasonic speed measuring component can be arbitrarily lengthened according to needs, the method has the effects of small occupied space and low manufacturing cost, and the measuring accuracy is remarkably improved.
As shown in fig. 1, 2 and 3, a device for collecting tangential velocity measurement flow comprises a measurement tube body, an ultrasonic speed measurement component is arranged in the measurement tube body, and is characterized in that an inlet end of fluid in the measurement tube body 4 is provided with a tangential flow generator 12, so that fluid flowing in an axial straight line in the measurement tube body 4 is deflected by the tangential flow generator 12 to form circumferential rotation flow, as shown in fig. 8, the tangential flow generator 12 is composed of a blade collar 7, a tangential flow fixing ring 13 and a blade rotor 1, the tangential flow fixing ring 13 is fixed at the end of the measurement tube body, the blade collar 7 and the tangential flow fixing ring 13 are concentrically arranged, a circumferential array between the blade collar 7 and the tangential flow fixing ring 13 is provided with the blade rotor 1, a flow guide surface of the blade rotor 1 is inclined with the inlet direction of the fluid, so as to facilitate the axial flow of the fluid to be converted into circumferential rotation flow by the inclined blade rotor, when the corresponding ultrasonic speed measurement component is shorter than the shortest standard axial installation distance, the receiving and transmitting path can be arbitrarily lengthened according to the requirement, so that the ultrasonic speed measurement component has the effects of small occupied space and low manufacturing cost, and the measurement precision is obviously improved.
The inclination angle between the flow guide surface of the vane rotor wing 1 and the entering direction of the fluid in the measuring pipe body is 15 degrees ~ 75 degrees, so that the axial straight-line flowing fluid is converted into the circumferential rotating flowing fluid through the vane rotor wing 1, and the effect of changing the direction of the fluid is achieved.
As shown in fig. 6 and 7, the vane rotor 1 of the present invention may adopt a twisted curved surface, that is, an inclination angle between the blade root of the vane rotor 1 and the measurement pipeline axis is 5 ° ~ 45 °, an inclination angle between the outer end of the vane rotor 1 and the measurement pipeline axis is 35 ° ~ 75 °, the vane rotor 1 is formed by gradually smoothly twisting 5 ° ~ 45 ° of the blade root to 35 ° ~ 75 ° outside the vane, an edge of a flow-incident end c of the vane rotor is smoothly protruded, a flow guide surface and a back flow surface are connected by a fillet transition, an edge of a back end d of the vane is smoothly recessed, and a back end e of the back flow surface of the vane is a lift angle f, so as to guide an axially flowing fluid to generate the same tangential circular motion under the condition of low pressure loss.
According to the invention, the flow splitting cone body 5 can be arranged at the fluid inlet end of the blade shaft collar 7, and the axial section of the flow splitting cone body 5 is parabolic, so that the flow splitting of axially flowing fluid is facilitated, and the axially flowing fluid enters the flow measurement mounting ring body through the gap between adjacent blade rotor wings 1, and the flow splitting effect is achieved.
The rear end of the shunting cone 5 can axially extend along the axis of the measuring tube body 4 to form the flow stabilizing shaft 9, so that the flow stabilizing shaft 9 can be used for stabilizing the direction-changed fluid after the flow of the blade rotor wing 1 is guided, and the accuracy measured by the ultrasonic transducers 2 on two sides of the flow stabilizing shaft 9 is more accurate.
The measuring pipe body can be annular or tubular, and two sides of the measuring pipe body are respectively and fixedly connected with the tangential flow fixing ring of the tangential flow generator through the buckles, so that the ultrasonic movement can be verified or replaced without disassembling the pipeline.
As shown in fig. 2, 3, 4, and 5, when the measuring pipe is annular, the reflecting surface of the ultrasonic velocity measuring component of the present invention may be circumferentially disposed along the inner wall of the measuring pipe, the reflecting mirror 3 may be disposed circumferentially along the inner wall of the measuring pipe by using a mirror surface, or may be machined into a mirror surface in the circumferential direction of the inner wall of the measuring pipe, the ultrasonic transducers of the ultrasonic velocity measuring component are circumferentially disposed on the measuring pipe, so that the transmitting and receiving path 11 reflected by the ultrasonic transducers 2 and the reflecting surface 3 is on the same cross section of the measuring pipe, so as to reach the purpose that the fluid that is circumferentially rotated after being deflected by the tangential flow generator reflects or reflects multiple times the ultrasonic signal by the ultrasonic transducers on the reflecting surface and reaches another ultrasonic transducer 2-2, so that the transmitting and receiving path is arbitrarily lengthened as required, thereby significantly improving the measuring accuracy, and the flow velocity and the flow of the fluid are calculated by measuring the time difference between the forward flow and the backward flow in the rotation direction of the fluid, so that the substantial technical problem that the small flow is difficult to accurately measure is solved, and the equipment cost and the installation cost for measuring by axially arranging a plurality of groups of transducers on the measuring tube body in the prior art are greatly saved.
When the measuring tube body is tubular, the installation mode of the ultrasonic speed measuring component in the measuring tube body is the prior art, and the installation mode is not repeated.
When the ultrasonic flow measuring device is installed, a reflecting surface is installed on the inner circumference of the measuring tube body, the reflecting surface 3 can be embedded along the inner wall circumference of the measuring tube body by adopting a mirror surface, the inner wall circumference of the flow measuring installation ring body 8 can also be machined into the mirror surface, the ultrasonic transducer 2 of the ultrasonic flow measuring component is arranged along the circumference of the measuring tube body, then the tangential flow generator is fixed on the measuring tube body through the buckle 14, the measuring tube body fixed with the tangential flow generator is hermetically installed in the meter body 6, and finally the ultrasonic transducer 2 is connected with the calculator.
When the invention is used for measuring fluid, the fluid enters a measuring tube body, a shunt cone body 5 shunts the fluid flowing axially, the shunted fluid flows in along the gap of adjacent blade rotors 1 and is turned by the inclined blade rotors 1 under the pressure action of the fluid to form fluid rotating circumferentially, meanwhile, the rotating fluid rotates circumferentially along a flow stabilizing shaft 9 and the gap of the measuring tube body after being stabilized by the flow stabilizing shaft 9 in the measuring tube body, at the moment, an ultrasonic transducer transmits an ultrasonic signal to a reflecting surface 3, the ultrasonic transducer 2-1 reaches another ultrasonic transducer 2-2 after being reflected by the reflecting surface 3 arranged on the circumference of the inner wall of the measuring tube body or being reflected for multiple times in the circumferential direction, and then the ultrasonic signal is reversely transmitted and reflected by the ultrasonic transducer 2-2 and received by the ultrasonic transducer 2-1, so that the ultrasonic signal runs in the measuring tube body along the circumferential direction of the fluid flowing circumferentially for a long distance, the calculator calculates the circumferential flow velocity and the flow of the fluid according to the time difference, so that the measurement precision is remarkably improved, the substantive defect that the axial measurement distance needs to be lengthened and the measurement pipe body is further lengthened in the prior art is greatly overcome, and the equipment cost and the replacement cost are greatly reduced.
When the instrument needs to be maintained, the sealing cover on the instrument body is opened, the buckle between the measuring tube body and the tangential flow generator is opened, the measuring tube body and/or the tangential flow generator can be taken out of the instrument body, and damaged parts are replaced; when the instrument needs to be verified again, the sealing cover on the instrument body is opened, the measuring pipe body and the tangential flow generator can be taken out together, and then a new measuring pipe body and a new tangential flow generator which are verified are installed and are fixed in a sealing mode through the sealing cover and the fixing seat.
As shown in fig. 3, in an embodiment of the present invention, five reflecting surfaces (mirrors) are disposed in the measuring tube, so that the ultrasonic signal forms a longer distance operation in the fluid rotation direction under the action of the reflecting surfaces, thereby increasing the magnitude of the collected time information, amplifying the calculated time and time difference, significantly improving the small flow measurement accuracy, and replacing the substantial deficiency of the prior art that the axial velocity is accurately measured by adding multiple sets of transducers axially on the measuring tube.
As shown in figure 4, a front tangential flow generator, a measuring pipe body and a rear tangential flow generator are sequentially fixed in the meter body along the axial direction of the fluid inlet end, the front tangential flow generator and the rear tangential flow generator fix the flow measurement installation ring body together through a buckle so as to be beneficial to realizing bidirectional measurement of fluid, when assembling the movement, the flow measurement installation ring body and the tangential flow fixing ring of the tangential flow generator are installed in the flow measurement device installation groove of the watch body, then, the ultrasonic flow measuring device for circumferential measurement is fixed in the watch body through the sealing cover, when verification or damage maintenance is needed, the meter body is not required to be detached from the pipeline connection, only the sealing cover is required to be opened, the flow measurement installation ring body and the tangential flow generator are taken out together, the new flow measurement installation ring body and the new tangential flow generator which are verified are installed, and then the sealing cover and the fixing seat are sealed and fixed.
By adopting the structure, the invention has the advantages of novel structure, compact structure, high measurement precision, front interference resistance, convenient assembly and disassembly and replacement of parts, low maintenance cost, high modularization degree, low installation cost and the like.
Claims (8)
1. A method for collecting tangential velocity to measure flow is characterized in that a tangential flow generator is arranged at an inlet end of fluid in a measuring tube body, the tangential flow generator is composed of a blade shaft ring, a tangential flow fixing ring and a blade rotor, the tangential flow fixing ring is fixed at the end of the measuring tube body, the blade shaft ring and the tangential flow fixing ring are concentrically arranged, the blade rotor is arranged in a circumferential array between the blade shaft ring and the tangential flow fixing ring, a flow guide surface of the blade rotor is inclined with the inlet direction of the fluid, the fluid which linearly flows along the axial direction of the measuring tube body is turned to form a fluid which flows in a circumferential rotating manner through the tangential flow generator by the tangential flow generator arranged at the inlet end of the fluid in the measuring tube body, tangential flow velocity signal information of the fluid which flows in a rotating manner is collected through an ultrasonic speed measuring component and uploaded to a calculator, when the corresponding ultrasonic speed measurement component is shorter than the shortest standard axial installation distance, the transceiving path of the ultrasonic speed measurement component can be arbitrarily lengthened according to needs, the tangential flow generator consists of a blade shaft ring, a tangential flow fixing ring and a blade rotor, the tangential flow fixing ring is fixed at the end part of the measuring pipe body, the blade shaft ring and the tangential flow fixing ring are concentrically arranged, the blade rotor is arranged on the circumferential array between the blade shaft ring and the tangential flow fixing ring, the flow guide surface of the blade rotor is inclined with the entering direction of fluid, the inclination angle between the flow guide surface of the blade rotor and the entering direction of the fluid in the measuring pipe body is 15-75 degrees, the blade rotor adopts a twisted curved surface, namely the inclination angle between the blade root of the blade rotor and the measuring pipe axis is 5-45 degrees, the inclination angle between the outer end of the blade rotor and the measuring pipe axis, the blade rotor wing is formed by smoothly twisting 5-45 degrees of the root of the blade gradually to 35-75 degrees of the outer part of the blade.
2. A device for collecting tangential velocity to measure flow comprises a measuring pipe body, wherein an ultrasonic speed measurement component is arranged in the measuring pipe body, and the device is characterized in that a tangential flow generator is arranged at an inlet end of fluid in the measuring pipe body so that the fluid flowing in an axial straight line in the measuring pipe body can be turned to form circumferential rotating flow through the tangential flow generator, the tangential flow generator consists of a blade shaft ring, a tangential flow fixing ring and a blade rotor wing, the tangential flow fixing ring is fixed at the end part of the measuring pipe body, the blade shaft ring and the tangential flow fixing ring are concentrically arranged, a circumferential array between the blade shaft ring and the tangential flow fixing ring is provided with the blade rotor wing, a flow guide surface of the blade rotor wing is inclined with the inlet direction of the fluid, the inclination angle between the flow guide surface of the blade rotor wing and the inlet direction of the fluid in the measuring pipe body, the angle of inclination between the blade root of the blade rotor and the measuring pipe axis is 5-45 degrees, the angle of inclination between the outer end of the blade rotor and the measuring pipe axis is 35-75 degrees, the blade rotor is formed by gradually and smoothly twisting 5-45 degrees of the blade root to 35-75 degrees of the outer part of the blade, the edge of the incident flow end c of the blade rotor is smoothly protruded, the flow guide surface and the back flow surface are in fillet transition connection, the edge of the back flow surface d of the blade back end is smoothly concave, and the back end of the back flow surface e of the blade is a lift angle f.
3. The device for collecting tangential velocity measurement flow according to claim 2, wherein the fluid inlet end of the vane collar is provided with a diverging cone, and the axial cross section of the diverging cone is parabolic.
4. The device of claim 3, wherein the rear end of the splitter cone extends axially along the axis of the measurement tube to form a surge shaft.
5. The device for collecting tangential velocity measurement flow according to claim 2, wherein two sides of the measurement tube body are respectively and fixedly connected with the tangential flow fixing ring of the tangential flow generator through a buckle.
6. A device for acquiring tangential velocity measurement flow according to claim 5, wherein the measuring tube is annular.
7. A device for acquiring tangential velocity measurement flow according to claim 5, wherein the measuring tube is tubular.
8. The device for collecting tangential velocity measurement flow according to claim 6, wherein when the measuring pipe body is annular, the reflecting surface of the ultrasonic velocity measurement unit is circumferentially disposed along the inner wall of the measuring pipe body, and the ultrasonic transducer of the ultrasonic velocity measurement unit is circumferentially disposed on the measuring pipe body, so that the transmitting and receiving paths reflected by the ultrasonic transducer and the reflecting surface are on the same cross section of the measuring pipe body.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218402.4A CN106768105B (en) | 2016-12-26 | 2016-12-26 | Method and device for collecting tangential velocity measurement flow |
| DE112017006535.6T DE112017006535T5 (en) | 2016-12-26 | 2017-11-22 | Method and apparatus for measuring flow collecting tangential velocity |
| PCT/CN2017/112332 WO2018121134A1 (en) | 2016-12-26 | 2017-11-22 | Flow measurement method and apparatus with tangential speed acquisition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218402.4A CN106768105B (en) | 2016-12-26 | 2016-12-26 | Method and device for collecting tangential velocity measurement flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106768105A CN106768105A (en) | 2017-05-31 |
| CN106768105B true CN106768105B (en) | 2019-12-31 |
Family
ID=58926040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611218402.4A Active CN106768105B (en) | 2016-12-26 | 2016-12-26 | Method and device for collecting tangential velocity measurement flow |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106768105B (en) |
| DE (1) | DE112017006535T5 (en) |
| WO (1) | WO2018121134A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768105B (en) * | 2016-12-26 | 2019-12-31 | 威海市天罡仪表股份有限公司 | Method and device for collecting tangential velocity measurement flow |
| CN107268543A (en) * | 2017-08-14 | 2017-10-20 | 北京航天福道高技术股份有限公司 | A kind of distributed integrated gate system |
| CN109681668A (en) * | 2019-02-22 | 2019-04-26 | 凯瑞特阀业有限公司 | Ball valve |
| CN112432678B (en) * | 2020-11-23 | 2023-06-23 | 西安航天动力研究所 | Be used for thrust chamber circumference equipartition single hole flow automatic synchronization detection device |
| US11940308B2 (en) * | 2020-12-05 | 2024-03-26 | Itron Global Sarl | Insert forming an ultrasonic channel for a fluid meter and including reflector mirrors and a flow stabilizer |
| CN116202657B (en) * | 2023-03-06 | 2024-05-17 | 青岛乾程科技股份有限公司 | Ultrasonic heat meter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2238615A (en) * | 1989-12-01 | 1991-06-05 | Ws Atkins Engineering Sciences | Swirl flowmeter for multiphase fluid streams |
| CN1643346A (en) * | 2002-03-14 | 2005-07-20 | 恩德斯+豪斯流量技术股份有限公司 | Coriolis mass flow meter with swirl generator |
| CN202853663U (en) * | 2012-08-13 | 2013-04-03 | 河南精科仪表科技有限公司 | Improved precession vortex flow meter |
| CN203935832U (en) * | 2014-04-24 | 2014-11-12 | 浙江工业大学 | With the bumpy flow cavitation device of distributing fin |
| CN206269870U (en) * | 2016-12-26 | 2017-06-20 | 威海市天罡仪表股份有限公司 | With collection tangential velocity measurement flow apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204788528U (en) | 2015-07-27 | 2015-11-18 | 山东力创科技有限公司 | Ultrasonic wave is flow sensor for calorimeter with water conservancy diversion cross |
| CN106768105B (en) * | 2016-12-26 | 2019-12-31 | 威海市天罡仪表股份有限公司 | Method and device for collecting tangential velocity measurement flow |
-
2016
- 2016-12-26 CN CN201611218402.4A patent/CN106768105B/en active Active
-
2017
- 2017-11-22 DE DE112017006535.6T patent/DE112017006535T5/en active Pending
- 2017-11-22 WO PCT/CN2017/112332 patent/WO2018121134A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2238615A (en) * | 1989-12-01 | 1991-06-05 | Ws Atkins Engineering Sciences | Swirl flowmeter for multiphase fluid streams |
| CN1643346A (en) * | 2002-03-14 | 2005-07-20 | 恩德斯+豪斯流量技术股份有限公司 | Coriolis mass flow meter with swirl generator |
| CN202853663U (en) * | 2012-08-13 | 2013-04-03 | 河南精科仪表科技有限公司 | Improved precession vortex flow meter |
| CN203935832U (en) * | 2014-04-24 | 2014-11-12 | 浙江工业大学 | With the bumpy flow cavitation device of distributing fin |
| CN206269870U (en) * | 2016-12-26 | 2017-06-20 | 威海市天罡仪表股份有限公司 | With collection tangential velocity measurement flow apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018121134A1 (en) | 2018-07-05 |
| DE112017006535T5 (en) | 2019-10-10 |
| CN106768105A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106768105B (en) | Method and device for collecting tangential velocity measurement flow | |
| CN201210067Y (en) | Ultrasonic measurement construction for gas flow in tube with small diameter | |
| CN201795821U (en) | Ultrasonic flowmeter | |
| CN203443704U (en) | Supersonic wave calorimeter | |
| CN103323064A (en) | Ultrasonic multi-point reflection flow meter | |
| CN206269870U (en) | With collection tangential velocity measurement flow apparatus | |
| US20150241256A1 (en) | Flow meter with acoustic array | |
| CN106949939B (en) | Gas turbine flowmeter with double high-frequency detection | |
| CN104596601A (en) | Ultrasonic flow meter sensor with eight sound channels | |
| CN202304911U (en) | Vortex procession mass flowmeter | |
| CN106768826A (en) | A kind of dynamic temperature force combination probe for measuring Supersonic Two Dimensional Unsteady flow field | |
| CN102023038B (en) | Ultrasonic measurement method for pipeline flux | |
| WO2015089899A1 (en) | Rotation-type flowmeter | |
| CN202083425U (en) | Ultrasonic measurement pipe section for water meter and heat meter | |
| CN104236644A (en) | Novel water meter with middle-through-hole movable throttling element | |
| CN101672671A (en) | Z-shaped pipe section for energy transducers of ultrasonic flowmeters and calorimeters | |
| CN203274820U (en) | Ultrasonic multiple-point reflection flow meter | |
| CN202101708U (en) | Ultrasonic heat meter | |
| CN105115555A (en) | Method of measuring amount of lubricating oil of water guide bearing of hydraulic turbine set | |
| CN219608111U (en) | High-precision multi-runner turbine flowmeter | |
| RU2678210C1 (en) | Turbine consumption converter | |
| CN111256768A (en) | Ultrasonic flowmeter | |
| CN217276312U (en) | Turbine flowmeter | |
| CN201503287U (en) | Z-shaped pipe section for transducers of ultrasonic flowmeter and ultrasonic heat meter | |
| CN205919858U (en) | Wear-resisting wide-range type liquid turbine flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |