WO2018223264A1 - Sonde de débitmètre à ultrasons et débitmètre à ultrasons comprenant une sonde - Google Patents

Sonde de débitmètre à ultrasons et débitmètre à ultrasons comprenant une sonde Download PDF

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Publication number
WO2018223264A1
WO2018223264A1 PCT/CN2017/087199 CN2017087199W WO2018223264A1 WO 2018223264 A1 WO2018223264 A1 WO 2018223264A1 CN 2017087199 W CN2017087199 W CN 2017087199W WO 2018223264 A1 WO2018223264 A1 WO 2018223264A1
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WO
WIPO (PCT)
Prior art keywords
ultrasonic
probe
ultrasonic probe
rotating block
ultrasonic flowmeter
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PCT/CN2017/087199
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English (en)
Chinese (zh)
Inventor
欧林·马修
肖聪
吕伟城
林胜爽
Original Assignee
深圳市建恒测控股份有限公司
欧林·马修
Priority date (The priority date 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 date listed.)
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Application filed by 深圳市建恒测控股份有限公司, 欧林·马修 filed Critical 深圳市建恒测控股份有限公司
Priority to PCT/CN2017/087199 priority Critical patent/WO2018223264A1/fr
Priority to IL259828A priority patent/IL259828A/en
Priority to US16/000,761 priority patent/US10551231B2/en
Priority to AU2018203983A priority patent/AU2018203983A1/en
Priority to EP18176098.4A priority patent/EP3413019A3/fr
Publication of WO2018223264A1 publication Critical patent/WO2018223264A1/fr
Priority to US16/777,833 priority patent/US20200284629A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters

Definitions

  • the present invention relates to the field of ultrasonic measurement, and in particular to a probe for an ultrasonic flowmeter and an ultrasonic flowmeter including the probe.
  • Ultrasonic measurement plays an extremely important role in the current liquid measurement field and is unmatched by other measurement methods. It adopts advanced multi-pulse technology, signal digital processing technology and error correction technology to make the flow measurement more adaptable to the industrial scene environment, and the measurement is more convenient, economical and accurate. Can be widely used in petroleum, chemical, metallurgy, electric power, water supply and drainage and other fields.
  • Prior art ultrasonic flow meters include external clip and plug-in types.
  • 2 is a schematic view showing the installation method of the external clip type V-type ultrasonic flowmeter of the prior art
  • FIG. 3 is a schematic diagram of the installation method of the external clip type Z-type ultrasonic flowmeter of the prior art, and an external clip type N type. Clamping, external clip type W-type clamping, etc.
  • the plug-in type usually inserts the probe into the inside of the pipe. This plug-in avoids the influence of the pipe on the measurement.
  • the ultrasonic flowmeter includes two ultrasonic probes, an upstream ultrasonic probe 11 and a downstream ultrasonic probe 22, each of which is mounted with a piezoelectric wafer for transmitting and receiving ultrasonic signals.
  • Ultrasonic flowmeter adopts the measurement principle of time difference mode. It uses the ultrasonic wave emitted by the probe to propagate in the flowing fluid. The velocity of sound wave propagation in the downstream direction increases, the direction of countercurrent decreases, and there are different transmissions at the same propagation distance. Time, the flow rate of the fluid is measured based on the relationship between the difference in transmission time and the flow rate of the fluid to be measured.
  • the specific calculation formula of the flow rate of the fluid can be as follows:
  • V fluid velocity
  • ⁇ the angle between the ultrasonic signal and the fluid
  • Tup the time when the downstream ultrasonic probe transmits a signal to the upstream
  • Tdown the time when the upstream ultrasonic probe transmits a signal to the downstream
  • the flow rate of the fluid is different at different locations within the tube, with the flow rate in the center of the tube being faster than the flow rate near the tube wall.
  • the flow velocity distribution of the fluid in the conduit can be represented by a flow velocity profile.
  • volume flow rate (Q) average flow rate (v) ⁇ pipe cross-sectional area (A)
  • Mass flow and weight flow can also be calculated:
  • Mass flow rate (M) medium density ( ⁇ ) ⁇ volume flow rate (Q)
  • Weight flow (G) medium weight ( ⁇ ) ⁇ volume flow (Q)
  • the angle of the piezoelectric wafer in the prior art ultrasonic probe is fixed and unadjustable, which results in the incident angle of the ultrasonic signals of the two probes in the ultrasonic flowmeter being fixed, thereby causing the probe to be adjusted during the measurement process.
  • the spacing can be applied to the measurement of different pipe diameters, as shown in Figure 4 or Figure 5. If the angle of the probe is constant and the spacing between the probes is constant, the measurable diameter of the ultrasonic flowmeter will be unique, which will greatly increase the difficulty and limitations of the measurement.
  • the current ultrasonic flow measurement is divided into general-purpose and fixed-type.
  • the general-purpose ultrasonic measurement usually requires various parameters of the input pipe diameter, and the adjustment of the probe spacing is relatively cumbersome and error-prone; the fixed measurement is for a specific tube.
  • the size of the diameter and the material are dedicated, and the application range is small and restrictive. Both methods limit the application of ultrasonic measurement to a certain extent.
  • the technical problem to be solved by the present invention is to provide a probe for an ultrasonic flowmeter and an ultrasonic flowmeter including the probe, which overcome the above-mentioned drawbacks of the prior art, and overcome the defects of the uniqueness and limitation of the prior art fixed installation.
  • the technical solution adopted by the present invention to solve the technical problem thereof is to provide a probe of an ultrasonic flowmeter, comprising a rotatable rotating block;
  • a piezoelectric wafer is mounted on the rotating block, and the piezoelectric wafer is used to transmit or receive ultrasonic waves.
  • the probe of the ultrasonic flow meter further includes a rotary marker for indicating the position at which the rotary block rotates.
  • the rotary marker is an angle indicator disk, an angle display or a signal indicator.
  • the probe of the ultrasonic flow meter further includes a transmission mechanism that connects the rotating block and can drive the rotating block to rotate.
  • the transmission mechanism is a motor.
  • the probe of the ultrasonic flow meter further includes a fixed block, the rotating block being embedded in the fixed block.
  • the rotating block and the fixed block are made of plexiglass, polyetherimide or polyvinyl chloride.
  • the present invention also provides an ultrasonic flowmeter including a first ultrasonic probe and a second ultrasonic probe, the first ultrasonic probe and the second ultrasonic probe being the probe of the ultrasonic flowmeter according to any one of claims 1 to 7. :
  • the first ultrasonic probe is configured to transmit an ultrasonic signal and receive an ultrasonic signal emitted by the second ultrasonic probe;
  • the second ultrasonic probe is configured to emit an ultrasonic signal and receive an ultrasonic signal emitted by the first ultrasonic probe;
  • the angle of the electric wafer is such that the first ultrasonic probe can receive the ultrasonic signal emitted by the second ultrasonic probe, and the second ultrasonic probe can receive the ultrasonic signal emitted by the first ultrasonic probe.
  • the ultrasonic flow meter further includes a linkage device for connecting the first ultrasonic probe and the second ultrasonic probe,
  • the rotating block of the first ultrasonic probe rotates
  • the rotating block of the second ultrasonic probe is rotated by the linkage device.
  • the linkage device is a gear mechanism, a crank mechanism, a worm gear mechanism or a pulley.
  • the rotating block of the first ultrasonic probe of the ultrasonic flowmeter and the rotating block of the second ultrasonic probe are rotated by the same angle in opposite directions.
  • the ultrasonic flow meter further includes a processor coupled to the first ultrasonic probe and the second ultrasonic probe.
  • the processor controls the first ultrasonic probe and the second ultrasonic probe of the ultrasonic flowmeter to emit an ultrasonic signal, and controls the first ultrasonic probe and the second ultrasonic probe to receive the second ultrasonic probe and the first ultrasonic probe, respectively The transmitted ultrasonic signal;
  • the processor controls rotation of the rotating block of the first ultrasonic probe, and controls rotation of the rotating block of the second ultrasonic probe;
  • the processor further calculates a flow rate value according to a time difference between the first ultrasonic probe and the second ultrasonic probe receiving the ultrasonic signal.
  • the processor controls the linkage device to rotate the rotating block of the second ultrasonic probe by the linkage device when the processor controls the rotation of the rotating block of the first ultrasonic probe.
  • the ultrasonic flow meter further includes a memory for storing a table of relationships between different pipe diameters and the piezoelectric wafer angle.
  • the ultrasonic flowmeter determines a piezoelectric wafer angle required for the pipe diameter according to the relationship table
  • the rotating block of the first ultrasonic probe and the rotating block of the second ultrasonic probe rotate the angle.
  • the ultrasonic flow meter further includes a pipe diameter measuring module, and the pipe diameter measuring module is connected to the processor for measuring a pipe diameter of the pipe.
  • the ultrasonic flow meter further includes a communication module, and the communication module is connected to the processor for transmitting a flow rate value measured by the ultrasonic flow meter.
  • the ultrasonic flow meter also includes a display for displaying the flow rate value.
  • the present invention also provides a pipe flow measuring system comprising the ultrasonic flow meter and monitoring device according to any one of claims 8 to 21, wherein the flow value measured by the ultrasonic flow meter is transmitted to the monitoring device through the communication module.
  • the pipeline flow measurement system further includes a printing device coupled to the processor.
  • the invention has the beneficial effects of providing a probe of an ultrasonic flowmeter including a rotatable rotating block, wherein a piezoelectric wafer is mounted on the rotating block, and when the pipe diameter is different, the rotating block is rotated, so that the rotating block stays at a different
  • the position in order to change the angle of the piezoelectric wafer, thereby changing the ultrasonic incident angle of the piezoelectric wafer, realizes the versatility of the fixed installation, and avoids the uniqueness and limitation of the conventional fixed installation.
  • the invention also provides an ultrasonic flowmeter using a probe of the ultrasonic flowmeter, the ultrasonic flowmeter comprising two of the ultrasonic probes, when used for different pipe diameter measurement, by rotating the rotating block to adjust the piezoelectric wafer
  • the angle, thereby changing the ultrasonic incident angle of the piezoelectric wafer enables the signal emitted by the upstream probe to be received by the downstream probe, and the signal transmitted by the downstream probe can also be received by the upstream probe, so that different tubes can be measured with a fixed pitch
  • the flow rate of the diameter enables the same pair of fixed ultrasonic probes to be used in different pipe diameter ranges, which greatly increases the convenience and extensiveness of the ultrasonic probe application.
  • the angle of the rotating block of the two probes can be adjusted according to the actual application situation in the field, and the spacing between the two probes can also be adjusted, and the spacing between the two probes and the two probes can be adjusted simultaneously. Rotate the angle of the block to better suit the application environment.
  • FIG. 1 is a schematic view showing the working principle of a prior art ultrasonic flowmeter
  • FIG. 2 is a schematic view showing the installation method of the external clip type V-type ultrasonic flowmeter of the prior art
  • FIG. 3 is a schematic view showing the installation method of the external clip type Z-type ultrasonic flowmeter of the prior art
  • FIG. 4 is a schematic view showing the working principle of the external clip type V-type ultrasonic flowmeter of the prior art
  • FIG. 5 is a schematic view showing the working principle of the external clip type Z-type ultrasonic flowmeter of the prior art
  • FIG. 6 is a schematic diagram of a probe 100 of an ultrasonic flowmeter according to an embodiment of the present invention.
  • Figure 7 is a schematic view of a probe 200 of an ultrasonic flowmeter according to still another embodiment of the present invention.
  • Figure 8 is a schematic view of a probe 300 of an ultrasonic flowmeter according to still another embodiment of the present invention.
  • FIG. 9 is a schematic view of a fixing block of a probe of an ultrasonic flowmeter according to an embodiment of the present invention.
  • Figure 10 is a schematic view showing a rotating block of a probe of an ultrasonic flowmeter according to an embodiment of the present invention.
  • FIG. 11 is a schematic view showing the working principle of an external clip type V-type ultrasonic flowmeter 400 according to an embodiment of the present invention.
  • FIG. 12 is a schematic view showing the working principle of an external clip type Z-type ultrasonic flowmeter 500 according to an embodiment of the present invention
  • Figure 13 is a block diagram showing the structure of an ultrasonic flowmeter 600 according to an embodiment of the present invention.
  • FIG. 14 is a schematic flow diagram 700 of the ultrasonic flowmeter shown in FIG.
  • FIG. 2 is a schematic view showing the installation method of the external clip type V-type ultrasonic flowmeter of the prior art
  • FIG. 3 is a schematic view showing the installation method of the external clip type Z-type ultrasonic flowmeter of the prior art.
  • the installation method of Figure 2 is required.
  • the installation method of Figure 2 or 3 can be used.
  • ⁇ 1 probe angle of incidence
  • ⁇ 2 angle of refraction of the probe to the tube wall
  • ⁇ 3 angle of refraction of the tube wall to the tube diameter
  • s 1 distance of sound waves along the tube axis in the tube wall
  • s 2 tube The distance of sound waves in the radial direction along the tube
  • the mounting angle of the piezoelectric wafer in the two ultrasonic probes of the ultrasonic flowmeter is fixed.
  • the ultrasonic flowmeter probe needs to be changed.
  • the spacing between the two ultrasonic probes in the ultrasonic flowmeter needs to be changed according to different pipe diameters (D1, D2 or D3) when using the prior art ultrasonic flowmeter to measure the liquid flow in the pipeline as shown in FIG. 4 or FIG. 5. Otherwise, the ultrasonic probe will not be able to receive the ultrasonic signal emitted by another ultrasonic probe, and the flow value cannot be measured.
  • the figure does not show a plug-in ultrasonic flowmeter, but the principle is similar to the external clip type ultrasonic flowmeter of Figs.
  • the invention first provides a probe for an ultrasonic flowmeter capable of adjusting a wafer angle, and the probe of the ultrasonic flowmeter of the present invention can be used for an external clip type or a plug-in ultrasonic flowmeter.
  • a schematic diagram of a probe 100 of an ultrasonic flowmeter according to an embodiment of the present invention includes a rotating block 101 and a piezoelectric wafer 103.
  • FIG. 7 is a schematic diagram of a probe 200 of an ultrasonic flowmeter according to still another embodiment of the present invention.
  • the rotating block 201 and the piezoelectric wafer 203 are included. Taking the example of FIG.
  • the probe 100 of the ultrasonic flowmeter of the present embodiment includes a rotatable rotating block 101, and the rotating block 101 is provided with a piezoelectric wafer 103, which can be rotated.
  • the rotating block 101 is rotated to change the angle of the piezoelectric wafer 103, thereby changing the incident angle of the ultrasonic signal emitted by the piezoelectric wafer; avoiding the uniqueness and limitation of the conventional fixed mounting, having good versatility and wide applicability.
  • a ceramic piezoelectric wafer having a frequency of 2 M may be mounted on the rotating block, but the present invention is not limited thereto.
  • the probe of the ultrasonic flow meter may further include a rotary marker, and the position of the rotation of the rotary block may be indicated by the rotary marker.
  • an angled dial or an angled display can be employed as the rotary marker.
  • the rotation block can be manually rotated, and the rotation angle of the rotation block can be identified according to the scale of the angle identification disc.
  • the present invention does not limit other types of rotary markers.
  • the probe can receive the ultrasonic signal in other manners, such as displaying the ultrasonic signal reception by the light and dark of the signal light, or displaying the strength of the ultrasonic signal receiving by the brightness of the signal light, and the like.
  • the invention is not limited.
  • the probe of the ultrasonic flow meter may further include a transmission mechanism connected to the rotating block and capable of rotating the rotating block.
  • a motor can be used as the transmission mechanism.
  • the probe of the ultrasonic flow meter may further include a fixed block and the rotating block may be embedded in the fixed block.
  • Figure 8 is a schematic illustration of a probe 300 of an ultrasonic flow meter in accordance with yet another embodiment of the present invention.
  • the probe 300 of the ultrasonic flowmeter of the present embodiment includes a rotating block 303 and a fixed block 301.
  • the rotating block 303 is provided with a piezoelectric wafer 307 for transmitting or receiving ultrasonic waves, and the rotating block 303 is embedded in the fixing block 301, and is fixed.
  • the block 301 is provided with a motor 305 which can rotate the rotating block 303 to change the angle of the piezoelectric wafer 307 on the rotating block 303, so that the incident angle of the ultrasonic signal can be changed.
  • the coupling block 301 and the rotating block 303 may be filled with a coupling agent, for example, may be filled with silica gel.
  • the position of the rotating block 303 is automatically adjusted by the motor 305 to adjust the piezoelectric
  • the angle of the wafer 307 is used to change the ultrasonic incident angle of the piezoelectric wafer 307, thereby achieving the versatility of the fixed installation, avoiding the uniqueness and limitation of the conventional fixed installation, and having wide applicability.
  • a rotating block and a fixed block may be made of plexiglass, polyetherimide or polyvinyl chloride.
  • the selection of the above materials is merely an example of a preferred material that can be used, and is not limited to the above materials.
  • FIG. 9 is a schematic view of a fixed block of a probe of an ultrasonic flowmeter according to an embodiment of the present invention.
  • a recess is provided in the fixed block to embed a rotating block, and the fixed block can also be driven to control the rotation of the rotating block embedded therein.
  • Fig. 10 is a schematic view showing a rotating block of a probe of an ultrasonic flowmeter according to an embodiment of the present invention, in which a piezoelectric wafer is disposed for transmitting or receiving an ultrasonic signal.
  • FIG. 11 is a schematic view showing the working principle of the external clip type V-type ultrasonic flowmeter 400 according to an embodiment of the present invention.
  • the ultrasonic flowmeter 400 of the present embodiment includes two ultrasonic probes of the present invention, namely a first ultrasonic probe 401 and a second ultrasonic probe 403, and the first ultrasonic probe 401 and the second ultrasonic probe 403 are probes of the ultrasonic flowmeter of the present invention. .
  • FIG. 12 is a schematic diagram showing the working principle of the external clip type Z-type ultrasonic flowmeter 500 according to an embodiment of the present invention.
  • the ultrasonic flowmeter 500 of the present embodiment includes two ultrasonic probes of the present invention, namely, the first ultrasonic probe 501 and the first The ultrasonic probe 503, the first ultrasonic probe 501 and the second ultrasonic probe 503 are probes of the ultrasonic flowmeter of the present invention.
  • the first ultrasonic probe 401 is disposed upstream of the pipeline
  • the second ultrasonic probe 403 is disposed downstream of the pipeline
  • the first ultrasonic probe 401 transmits an ultrasonic signal.
  • the ultrasonic probe 403 receives the ultrasonic signal emitted by the first ultrasonic probe 401.
  • the second ultrasonic probe 403 transmits an ultrasonic signal
  • the first ultrasonic probe 401 receives the ultrasonic signal.
  • Two super The ultrasonic signal emitted by the acoustic wave probe 403 can calculate the flow rate of the liquid in the pipeline according to the flow rate calculation formula given in Fig. 1, and further calculate the flow value of the liquid in the pipeline.
  • the two probes can receive each other's ultrasonic signals, such as whether the ultrasonic signal is received by the light and dark of the signal light, or the intensity of the signal light is strong. Weak, etc., the invention is not limited.
  • the pitch of the first ultrasonic probe 401 and the second ultrasonic probe 403 may not be changed, but the rotation of the first ultrasonic probe 401 may be rotated to adjust the angle of the piezoelectric wafer of the first ultrasonic probe 401, and By rotating the rotating block of the second ultrasonic probe 403, the angle of the piezoelectric wafer of the second ultrasonic probe 403 is adjusted, so that when the diameter of the pipe changes, the second ultrasonic probe 403 can still receive the ultrasonic wave emitted by the first ultrasonic probe 401.
  • the first ultrasonic probe 401 can also receive the ultrasonic signal emitted by the second ultrasonic probe 403.
  • the flow rate of the liquid in the pipeline can also be calculated according to the flow rate calculation formula given in FIG. And further calculate the flow value of the liquid in the pipeline.
  • the spacing between the first ultrasonic probe 401 and the second ultrasonic probe 403 can be adjusted, and the rotating blocks in the two probes can also be adjusted. The angle to better adapt to the scene.
  • the ultrasonic flow meter may further include a linkage device, and the linkage device is connected to the first ultrasonic probe and the second ultrasonic probe of the ultrasonic flowmeter.
  • the linkage device is connected to the first ultrasonic probe and the second ultrasonic probe of the ultrasonic flowmeter.
  • a gear mechanism a crank mechanism, a worm gear mechanism or a pulley or the like may be employed as the linkage device, and the present invention is not limited thereto.
  • the rotating block of the first ultrasonic probe 401 and the rotating block of the second ultrasonic probe 403 can be rotated by the same angle in opposite directions, so that the second ultrasonic probe 403 receives the first The ultrasonic signal transmitted by the ultrasonic probe 401, the first ultrasonic probe 401 receives the ultrasonic signal emitted by the second ultrasonic probe 403.
  • the ultrasonic flow meter may further include a processor connected to the first ultrasonic probe and the second ultrasonic probe, and the processor may control the first ultrasonic probe and the second ultrasonic probe to transmit the ultrasonic signal, and control the first The ultrasonic probe and the second ultrasonic probe respectively receive the ultrasonic signals emitted by the second ultrasonic probe and the first ultrasonic probe; the processor may also control the rotation of the rotating block of the first ultrasonic probe and the second ultrasonic probe to change the medium pressure of the two rotating blocks The angle of the electric wafer; the processor can also automatically calculate the flow value of the liquid in the pipeline according to the time difference between the first ultrasonic probe and the second ultrasonic probe receiving the ultrasonic signal.
  • a device such as a CPU, an ARM, or an FPGA may be selected as the processor.
  • the pipes of different pipe diameters may be firstly configured to enable the ultrasonic flowmeter to Normally, the angle at which the piezoelectric wafer is tilted relative to the horizontal position is tested, and the angles of the piezoelectric wafers of different tube diameters and different tube diameters are saved.
  • the pipe diameter described in the present invention refers to the outer diameter of the pipe.
  • the processor may further control the linkage device.
  • the processor controls the rotation block of the first ultrasonic probe of the ultrasonic flowmeter to rotate
  • the rotating block of the second ultrasonic probe of the ultrasonic flowmeter may be driven to rotate by the linkage device.
  • the ultrasonic flow meter may further include a memory for storing a relationship between different tube diameters and piezoelectric wafer angles.
  • the two ultrasonic probes of the ultrasonic flowmeter that is, the piezoelectric wafers on the rotating blocks in the first ultrasonic probe 401 and the second ultrasonic probe 403 are set to a horizontal position.
  • the ultrasonic flowmeter finds the angle of the piezoelectric wafer corresponding to the diameter of the tube in the relationship table according to the size of the tube diameter, rotates the angle of the rotating block of the first ultrasonic probe 401, and rotates the second ultrasonic probe.
  • the rotating block of the head 403 rotates the angle in the opposite direction, so that the second ultrasonic probe 403 can receive the ultrasonic signal emitted by the first ultrasonic probe 401, and the first ultrasonic probe 401 can also receive the ultrasonic wave emitted by the second ultrasonic probe 403.
  • the signal ensures that the ultrasonic flow meter can work normally. Due to the influence of the flow velocity of the medium in the pipeline, there is a time difference between the time when the first ultrasonic probe 401 receives the ultrasonic signal and the time when the second ultrasonic probe 403 receives the ultrasonic signal, and the pipeline can be calculated according to the relationship between the flow velocity and the time difference.
  • the flow rate of the internal medium in turn, the flow rate value.
  • the ultrasonic flowmeter When the pipe diameter changes, the distance between the two probes in the ultrasonic flowmeter may not be changed, and the ultrasonic flowmeter first resets the rotating blocks in the first ultrasonic probe 401 and the second ultrasonic probe 403 to make the piezoelectric wafer in the two probes Recovering the horizontal position, and rotating the angle of the rotating block of the first ultrasonic probe 401 according to the angle of the piezoelectric wafer corresponding to the pipe diameter in the relation table, and rotating the rotating block of the second ultrasonic probe 403 to rotate the angle in the opposite direction Therefore, the second ultrasonic probe 403 can receive the ultrasonic signal emitted by the first ultrasonic probe 401, and the first ultrasonic probe 401 can receive the ultrasonic signal emitted by the second ultrasonic probe 403 to ensure that the ultrasonic flowmeter can work normally.
  • the rotating block in the first ultrasonic probe 401 and the second ultrasonic probe 403 may not be reset, but the current diameter is calculated.
  • the corresponding angle is compared with the current angle of the piezoelectric wafer in the ultrasonic flowmeter, that is, the angle at which further rotation is required is calculated, thereby controlling the rotation of the rotating block in the ultrasonic flowmeter by the motor.
  • the ultrasonic sensor may further include a pipe diameter measuring module for measuring the pipe diameter of the pipe, and the ultrasonic sensor measures the pipe diameter according to the distance measuring sensor at the pipe diameter and the piezoelectric wafer angle.
  • the relationship table looks up the piezoelectric wafer angle required for the current diameter and further rotates the rotating block to change the angle of the piezoelectric wafer in the two probes.
  • the diameter measuring module can use a distance sensor to measure the diameter of the pipe.
  • an ultrasonic distance sensor, a laser ranging sensor, an infrared distance measuring sensor, or a variable resistance ranging sensor can be used.
  • the ultrasonic flow meter may further include a communication module, and the communication module is connected to the processor for transmitting the flow value measured by the ultrasonic flow meter, and may also be used for transmitting other information values, for example, temperature and time. Wait.
  • a wired communication module or a wireless communication module may be used, the wired communication module may adopt an RS485 interface, and the wireless communication module may adopt wifi transmission.
  • the ultrasonic flow meter may further include a display for displaying the liquid flow value in the pipeline, and may also be used to display other information values, such as temperature, time, and the like.
  • the processor, the memory, the communication module, and the like are further included in the ultrasonic flowmeter, and are configured to implement automatic control and adaptive processing, so that the user has a better user experience.
  • a copper tube can be selected as the pipeline.
  • the external clip type V-type clamping shown in FIG. 2 can be used, that is, the first An ultrasonic probe and a second ultrasonic probe are required on the same side of the copper pipe.
  • the external clip type Z-type clamp shown in Fig. 3 or the outer clamp type V-type clamp shown in Fig. 2 that is, the first ultrasonic probe and the second ultrasonic wave may be used.
  • the probe can be mounted on the same side of the pipe. It can also be mounted on different sides of the pipe.
  • FIG. 13 is a block diagram showing the structure of an ultrasonic flowmeter 600 according to an embodiment of the present invention, including a first probe 601, a second probe 603, a processor 607, a pipe diameter measuring module 605, and a communication module 609.
  • the first probe 601 and the second probe 603 are probes of the ultrasonic flowmeter of the present invention.
  • the processor 607 is connected to the pipe diameter measuring module 605.
  • the processor 607 controls the pipe diameter measuring module 605 to measure the pipe diameter, and according to the measured pipe diameter, the corresponding pipe diameter and angle correspondence table is searched for correspondingly.
  • the angle of the piezoelectric wafer thereby controlling the angle of rotation of the rotating blocks in the two probes.
  • the pipe diameter and angle correspondence table may be stored in a storage device other than the processor, or may be stored in a storage unit inside the processor.
  • the processor 607 is further connected to the first probe 61 and the second probe 603, respectively, and controls the first probe 601 and the second probe 603 to transmit an ultrasonic signal, and controls the first probe 601 and the second probe 603 to receive the second probe 603 and the second probe, respectively.
  • the first probe 601 can receive the ultrasonic signal emitted by the second probe 603, the second probe 603 can receive the ultrasonic signal emitted by the first probe 601, and the processor according to the first probe 601 and the second probe 603 receives the time difference of the ultrasonic signal to calculate the flow value of the liquid in the pipeline.
  • the processor 607 is further connected to the communication module 609. After measuring the flow rate value of the liquid in the pipeline, the communication module 609 outputs the flow rate value and the like to the display screen or the ultrasonic flowmeter, for example, to the PC or the like.
  • FIG. 14 is a schematic flow diagram 700 of the ultrasonic flowmeter shown in FIG. Step 701, the ultrasonic flowmeter 600 pre-stores the relationship between the pipe diameter and the piezoelectric wafer angle; in step 703, the distance measuring module 605 in the ultrasonic flowmeter 600 measures the diameter of the pipe diameter; in step 705, the processor 607 The measured pipe diameter value is used to find the angle of the corresponding piezoelectric wafer in the relationship between the pipe diameter and the piezoelectric wafer angle, and controls the rotating block on the first probe 601 and the second probe 603 to rotate the angle in the opposite direction; Step 707, the processor 607 controls the first probe 601 and the second probe 603 to simultaneously transmit the ultrasonic signal, and controls the first probe 601 and the second probe 603 to receive the ultrasonic signals emitted by the second probe 603 and the first probe 601, respectively; The processor calculates a flow value of the liquid in the pipeline according to the time difference between the first probe 701 and the second probe 703 receiving the ultrasonic signal; in
  • the invention also provides a pipeline flow measuring system, which uses the ultrasonic flowmeter of the invention to complete the measurement of the liquid flow in the pipeline, and can realize real-time monitoring.
  • the pipeline flow measurement system may include the ultrasonic flowmeter and the monitoring device of the present invention, and the flow rate measured by the ultrasonic flowmeter may be transmitted to the monitoring device through the communication module in the ultrasonic flowmeter, so that the management personnel can detect the real-time. And control the flow of liquid in the pipeline and other information.
  • the monitoring device can be a PC, a mobile phone or a tablet device.
  • the pipeline flow measuring system can automatically adjust the piezoelectric wafer by controlling the rotating block in the ultrasonic probe by the processor for different pipe diameters under the condition that the upstream and downstream probes have the same pitch.
  • the ultrasonic incident angle enables the signal emitted by the upstream probe to be received by the downstream probe, and the signal transmitted by the downstream probe can be received by the upstream probe, thereby enabling measurement of flow rates of different pipe sizes with a fixed spacing.
  • Solve the limitations of traditional ultrasonic probes in the application field, especially in the installation and use of the probe has a qualitative leap.
  • the angle of the rotating block in the two probes can be adjusted, and the spacing between the two probes can also be adjusted, which greatly increases the application flexibility of the ultrasonic flowmeter.
  • the pipe flow measuring system can also be connected to a printing device, which is connected to the monitoring device and can be used for printing flow, flow rate and the like.

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  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne une sonde de débitmètre à ultrasons (100, 200, 300) et un débitmètre à ultrasons (400, 500, 600), comprenant un bloc de rotation rotatif (101, 201, 303), une puce piézoélectrique (103, 203, 307) étant montée sur le bloc de rotation (101, 201, 303), la puce piézoélectrique (103, 203, 307) étant utilisée pour émettre ou recevoir une onde ultrasonore, et au moyen de la rotation, le bloc de rotation (101, 201, 303) restant en différentes positions sous différents diamètres de tuyau de façon à régler l'angle d'incidence d'une onde sonore de la puce piézoélectrique (103, 203, 307). Le débitmètre à ultrasons (400, 500, 600) comprend deux sondes de débitmètre à ultrasons (401, 403, 501, 503, 601, 603). Lorsqu'il est utilisé pour une mesure d'écoulement avec différents diamètres de tuyau, l'angle de la puce piézoélectrique est ajusté par la rotation du bloc de rotation de telle sorte qu'un signal émis par une sonde amont peut être reçu par une sonde aval, et un signal émis par la sonde aval peut également être reçu par la sonde amont, ce qui permet de mesurer le débit de liquide dans différents diamètres de tuyau avec un espacement fixe, et ce qui permet à la même paire de sondes de débitmètre à ultrasons fixes (401, 403, 501, 503, 601, 603) d'être utilisées universellement dans différentes plages de diamètre de tuyau, améliorant significativement la commodité et la plage de l'application des sondes de débitmètre à ultrasons (401, 403, 501, 503, 601, 603).
PCT/CN2017/087199 2017-06-05 2017-06-05 Sonde de débitmètre à ultrasons et débitmètre à ultrasons comprenant une sonde WO2018223264A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/CN2017/087199 WO2018223264A1 (fr) 2017-06-05 2017-06-05 Sonde de débitmètre à ultrasons et débitmètre à ultrasons comprenant une sonde
IL259828A IL259828A (en) 2017-06-05 2018-06-05 Compact ultrasonic flowmeter with adjustment for various flow diameters
US16/000,761 US10551231B2 (en) 2017-06-05 2018-06-05 Compact ultrasonic flowmeter with adjustment for various flow diameters
AU2018203983A AU2018203983A1 (en) 2017-06-05 2018-06-05 Compact ultrasonic flowmeter with adjustment for various flow diameters
EP18176098.4A EP3413019A3 (fr) 2017-06-05 2018-06-05 Débitmètre à ultrasons compact avec réglage de diamètres différents
US16/777,833 US20200284629A1 (en) 2017-06-05 2020-01-30 Compact ultrasonic flowmeter with adjustment for various flow diameters

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PCT/CN2017/087199 WO2018223264A1 (fr) 2017-06-05 2017-06-05 Sonde de débitmètre à ultrasons et débitmètre à ultrasons comprenant une sonde

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US16/000,761 Continuation-In-Part US10551231B2 (en) 2017-06-05 2018-06-05 Compact ultrasonic flowmeter with adjustment for various flow diameters

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