CN105424110A - Ultrasonic wave water meter - Google Patents
Ultrasonic wave water meter Download PDFInfo
- Publication number
- CN105424110A CN105424110A CN201510993130.4A CN201510993130A CN105424110A CN 105424110 A CN105424110 A CN 105424110A CN 201510993130 A CN201510993130 A CN 201510993130A CN 105424110 A CN105424110 A CN 105424110A
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- water meter
- stream pipeline
- pipeline
- ultrasonic water
- 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.)
- Pending
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
- G01F1/662—Constructional details
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides an ultrasonic wave water meter which comprises a first pipe body, an ultrasonic wave metering device, a display module and a controller. The first pipe body is provided with a fluid passage pipeline, a water inlet and a water outlet, wherein the water inlet and the water outlet are communicated with the fluid passage pipeline. The ultrasonic wave metering device comprises two ultrasonic wave transceivers and two reflecting elements, wherein the two ultrasonic wave transceivers are arranged on the first pipe body and arranged in a spaced mode in the axial direction of the fluid passage pipeline, the two reflecting elements are arranged in the fluid passage pipeline, the two reflecting elements and the two ultrasonic wave transceivers are arranged in a one-to-one corresponding mode, and ultrasonic waves transmitted by one ultrasonic wave transceiver are parallel to the center axis or coincide with the center axis on a propagation path between the two reflecting elements. The display module is arranged on the outer wall of the first pipe body. The controller is electrically connected with the ultrasonic wave metering device and the display module. The controller receives signals transmitted by the ultrasonic wave metering device and displays the metering result on the display module. The ultrasonic wave water meter is high in measurement precision.
Description
Technical field
The present invention relates to flow metering field, in particular to a kind of ultrasonic water meter.
Background technology
For saving heating cost and reducing energy consumption, in the winter heating system pipe network of Northern Part of China, current have the feature of the low and high-temperature variation range of water quality usually.Measure for hot water flow in heating pipe network, adopt the vane-wheel type flowmeter of prior art usually because water quality is lower and containing the factor such as impurity, easily cause pipe network to block.In addition, because water temperature variation range is comparatively large, the impact that temperature is brought to flow measurement is also not easily eliminated, and the crushing of vane-wheel type flowmeter self is comparatively large in addition, is unfavorable for saving energy and reduce the cost.For this reason, the ultrasonic water meter based on ultrasonic flow rate measuring principle is just becoming the development trend that in heating system pipe network, hot water flow is measured.
Ultrasonic water meter is little owing to having crushing, not tested amount water quality impact, precision advantages of higher, is becoming focus new in heating network hot water flow table research and development field.Its ultimate principle is that the ultrasonic transmitter-receiver by being arranged on pipeline upstream and downstream both sides launches ultrasound wave to fluids within pipes, modulating action due to fluid can calculate the mistiming of ultrasound wave downstream propagation and adverse current propagation, obtains the flow rate information in pipeline and and then calculates flow.
In prior art, ultrasonic water meter adopts W type travel path usually, in aforesaid way, there is the angle being less than 90 ° between the travel path of ultrasound wave in stream pipeline and the central axis of stream pipeline.
In use, particle tiny in fluid, dust, dust etc. stick to the position of reflection supersonic wave on stream duct wall, hyperacoustic reflection paths more can be made to change, the small part even ultrasound wave of major part can not reflex to the range of receiving of receiver and can not be received, thus have impact on measuring accuracy, reduce the accuracy of measurement.
And when adopting W type travel path, because ultrasound wave will through the reflection more than once in stream pipeline, also there is the ultrasound wave of major part can not be received beyond the range of receiving of receiver after reflection, also have impact on measuring accuracy, reduce the accuracy of measurement.In a word, the measuring accuracy of above-mentioned ultrasonic water meter is lower.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of ultrasonic water meter, and the measuring accuracy of this ultrasonic water meter is higher.
To achieve these goals, the invention provides a kind of ultrasonic water meter, ultrasonic water meter comprises: the first body, and the first body has stream pipeline and the water inlet be connected with stream pipeline respectively and water delivering orifice; Supersonic wave metering device, supersonic wave metering device comprises two ultrasonic transmitter-receivers, and two ultrasonic transmitter-receivers are arranged on the first body and along the axially spaced-apart of stream pipeline and arrange; Two reflecting elements, be arranged on the inside of stream pipeline, wherein, two reflecting elements and two ultrasonic transmitter-receiver one_to_one corresponding are arranged, the centerline axis parallel of the travel path of the ultrasound wave launched of ultrasonic transmitter-receiver between two reflecting elements and stream pipeline or overlap; Display module, is arranged on the outer wall of the first body; Controller, supersonic wave metering device and display module are electrically connected with controller respectively, and controller receives the signal of supersonic wave metering device transmission and is presented on display module by metric results.
Further, the ultrasound wave of a ultrasonic transmitter-receiver transmitting is received by another ultrasonic transmitter-receiver to make ultrasound wave form N-type travel path in stream pipeline respectively after two reflecting elements reflections.
Further, two ultrasonic transmitter-receivers axially shifting to install at stream pipeline, and two ultrasonic transmitter-receiver intervals in the circumference of stream pipeline are arranged.
Further, two ultrasonic transmitter-receivers are 180 ° relative to the central axis of stream pipeline and are symmetrical arranged.
Further, two reflecting elements axially shifting to install at stream pipeline, and two reflecting element intervals in the circumference of stream pipeline are arranged.
Further, between the ultrasound wave of a ultrasonic transmitter-receiver transmitting and the reflecting surface of a reflecting element, there is the first incident angle α, between the ultrasound wave that another ultrasonic transmitter-receiver receives and the reflecting surface of another reflecting element, there is the second incident angle β.
Further, the first incident angle α and the second incident angle β is 45 °.
Further, stream pipeline comprises the first pipeline section and corresponding two the second pipeline sections being arranged on the first pipeline section two ends respectively, and wherein, the internal diameter of the first pipeline section is less than the internal diameter of the second pipeline section, and two reflecting elements respectively correspondence are arranged on two the second inner tube segment.
Further, the reflecting element turbulent portion that comprises reflecting surface and be connected with reflecting surface.
Further, ultrasonic water meter also comprise be arranged on stream pipeline tube wall on two first install through holes, first install through hole is communicated with the inside of stream pipeline, two first installation through holes arrange with two ultrasonic transmitter-receiver one_to_one corresponding respectively.
Further, ultrasonic water meter also comprise be arranged on stream pipeline tube wall on two second through holes are installed, second installs through hole is communicated with the inside of stream pipeline, and two reflecting elements respectively correspondence are arranged on the inside of two second installation through holes.
Further, supersonic wave metering device also comprises: travel-time metering unit, for measuring the ultrasonic propagation time between two ultrasonic transmitter-receivers; Flow rate calculation parts, calculate the flow of fluid to be batched according to the signal of travel-time metering unit transmission.
Further, ultrasonic water meter also comprises: the second body, and the second body is obliquely installed relative to the first body; Temperature sensor, temperature sensor is arranged on the temperature treating fluid measured in the second body with test.
Apply technical scheme of the present invention, the centerline axis parallel of the travel path of the ultrasound wave launched due to ultrasonic transmitter-receiver between two reflecting elements and stream pipeline or overlap, make the flow field change in stream pipeline more smooth and easy, be conducive to obtaining Flow Field Distribution more stably, thus improve the measuring accuracy of ultrasonic water meter.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the perspective view of the embodiment according to ultrasonic water meter of the present invention;
Fig. 2 shows the structural representation of the embodiment according to ultrasonic water meter of the present invention;
The fluid flow to be measured that Fig. 3 a shows the ultrasonic water meter of Fig. 2 is 0.05m
3the velocity profile of the fluid on stream central axis is positioned at during/h;
The fluid flow to be measured that Fig. 3 b shows the ultrasonic water meter of Fig. 2 is 2.5m
3the velocity profile of the fluid on stream central axis is positioned at during/h;
The fluid flow to be measured that Fig. 4 a shows the ultrasonic water meter of Fig. 2 is 0.05m
3during/h a direction longitudinal section on Flow Field Distribution schematic diagram;
The fluid flow to be measured that Fig. 4 b shows the ultrasonic water meter of Fig. 2 is 0.05m
3during/h another direction longitudinal section on Flow Field Distribution schematic diagram;
The fluid flow to be measured that Fig. 5 a shows the ultrasonic water meter of Fig. 2 is 2.5m
3during/h a direction longitudinal section on Flow Field Distribution schematic diagram;
The fluid flow to be measured that Fig. 5 b shows the ultrasonic water meter of Fig. 2 is 2.5m
3during/h another direction longitudinal section on Flow Field Distribution schematic diagram; And
The ultrasonic water meter that Fig. 6 shows Fig. 2 carries out the schematic diagram of measurement result and the precision measured under different flow scope and temperature variation condition.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
1, stream pipeline; 10, the first body; 11, the first pipeline section; 12, the second pipeline section; 13, water inlet; 14, water delivering orifice; 15, first through hole is installed; 16, second through hole is installed; 17, reference column; 20, the second body; 2, ultrasonic transmitter-receiver; 3, reflecting element; 31, reflecting surface; 32, turbulent portion.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
In the present invention and embodiments of the invention, fluid flows from left to right according to shown in Fig. 2.
As depicted in figs. 1 and 2, the invention provides a kind of ultrasonic water meter.Ultrasonic water meter comprises the first body 10, be arranged on the supersonic wave metering device of the first body 10 inside, be arranged on display module on the outer wall of the first body 10 and controller.
Wherein, supersonic wave metering device and display module are electrically connected with controller respectively, and controller receives the signal of supersonic wave metering device transmission and is presented on display module by metric results; First body 10 has stream pipeline 1 and the water inlet 13 be connected with stream pipeline 1 respectively and water delivering orifice 14.
Two reflecting elements 3 of two ultrasonic transmitter-receivers 2 that supersonic wave metering device comprises two ultrasonic transmitter-receivers 2, arrange along the axially spaced-apart of stream pipeline 1 and the inside that is arranged on stream pipeline 1.Wherein, two ultrasonic transmitter-receivers 2 are arranged on stream pipeline 1 inside, two reflecting elements 3 and two ultrasonic transmitter-receiver 2 one_to_one corresponding are arranged, the travel path of ultrasound wave between two reflecting elements 3 of ultrasonic transmitter-receiver 2 transmitting and the central axes of stream pipeline 1.
By above-mentioned setting, the travel path of ultrasound wave between two reflecting elements 3 launched due to a ultrasonic transmitter-receiver 2 and the central axes of stream pipeline 1, make the flow field change in stream pipeline 1 more smooth and easy, be conducive to obtaining Flow Field Distribution more stably, and the flow velocity being positioned at the fluid on center line is maximum, corresponding suitable, the adverse current mistiming is also maximum, and the mistiming is more conducive to more greatly measuring, thus improve the measuring accuracy of supersonic wave metering device, and then improve the measuring accuracy of ultrasonic water meter and the accuracy of measurement.
Further, variable can be presented on display module, convenient operation personal observations, and above-mentioned ultrasonic water meter compact conformation.
As shown in Figure 2, two ultrasonic transmitter-receivers 2 axially shifting to install at stream pipeline 1, and two ultrasonic transmitter-receiver 2 intervals in the circumference of stream pipeline 1 are arranged.Two reflecting elements 3 axially shifting to install at stream pipeline 1, and two reflecting element 3 intervals in the circumference of stream pipeline 1 are arranged.
Preferably, two ultrasonic transmitter-receivers 2 are 180 ° relative to the central axis of stream pipeline 1 and are symmetrical arranged, and namely two ultrasonic transmitter-receivers 2 are arranged at the both sides of stream pipeline 1 upstream and downstream respectively; Two reflecting elements 3 are 180 ° relative to the central axis of stream pipeline 1 and are symmetrical arranged and two reflecting elements 3 corresponding opposite side being arranged on two ultrasonic transmitter-receivers 2 respectively.
The ultrasound wave of ultrasonic transmitter-receiver 2 transmitting is received to make ultrasound wave form N-type travel path in stream pipeline 1 by another ultrasonic transmitter-receiver 2 respectively after two reflecting elements 3 reflect.
By above-mentioned setting, be symmetrical arranged because two reflecting elements 3 are 180 ° relative to the central axis of stream pipeline 1, thus it is more smooth and easy to make stream pipeline 1 flow field change, be conducive to obtaining more stable Flow Field Distribution in the pipeline between two reflecting elements 3, be conducive to measuring, improve measuring accuracy, and not easily block.
Particularly, the sound channel reflection with N-type travel path of the present embodiment is conducive to the symmetry of flow field relative to the central axis of stream pipeline 1, so the flow field be positioned on stream pipeline 1 central axis is more steady.Embodiments of the invention avoid traditional U-shaped reflex channel and make flow field that the phenomenon of skew occur to stream pipeline 1 side.
Particularly, N-type travel path is made up of three sections of sound paths L1, L2 and L3.Wherein, L1=L3=10mm, L2=72mm.Wherein, L1 be the ultrasonic propagation that sends of one of them ultrasonic transmitter-receiver 2 to reflecting element 3 reflecting surface between distance; L2 is that ultrasound wave is transmitted to the propagation distance of another reflecting element 3 by a reflecting element 3; L3 is that ultrasound wave is transmitted to the distance of another ultrasonic transmitter-receiver 2 by the reflecting surface of reflecting element 3.
As shown in Figure 2, in embodiments of the invention, between the ultrasound wave of ultrasonic transmitter-receiver 2 transmitting and the reflecting surface of a reflecting element 3, there is the first incident angle α, between the ultrasound wave that another ultrasonic transmitter-receiver 2 receives and the reflecting surface of another reflecting element 3, there is the second incident angle β.
Particularly, the first incident angle α and the second incident angle β is 45 °.
By above-mentioned setting, the travel path of ultrasound wave between two reflecting elements 3 that ultrasonic transmitter-receiver 2 is launched and the central axes of stream pipeline 1, because the flow field on central axis is more steady, flow velocity on central axis is maximum, so the mistiming under the concurrent-countercurrent condition of correspondence is also maximum, the mistiming is more conducive to more greatly measuring.
As shown in Figure 2, in embodiments of the invention, stream pipeline 1 comprises the first pipeline section 11 and corresponding two the second pipeline sections 12 being arranged on the first pipeline section 11 two ends respectively, wherein, the internal diameter of the first pipeline section 11 is less than the internal diameter of the second pipeline section 12, two reflecting elements 3 respectively correspondence to be arranged on two the second pipeline sections 12 inner.
By above-mentioned setting, flow path pipeline 1 carries out undergauge design, can improve the measuring accuracy of ultrasonic water meter.
Particularly, the internal diameter D1 of the first pipeline section 11 can be set to 20mm, the internal diameter D2 of the second pipeline section 12 is set to 14mm.Continuity characteristic (mass conservation characteristic) when flowing in stream pipeline 1 according to fluid, stream pipeline 1 xsect after undergauge reduces, the circulate mean flow rate of xsect of the second pipeline section 12 of fluid will increase, rate of flow of fluid on L2 path also will increase, mistiming under same traffic condition after undergauge between concurrent-countercurrent ultrasonic propagation signal will increase, and be conducive to improving measuring accuracy.
Same, this N-type travel path can also be applied in the design of other Large Diameter Pipeline transit time ultrasonic ripple water meters.
As shown in Figure 2, in embodiments of the invention, the turbulent portion 32 that reflecting element 3 comprises reflecting surface 31 and is connected with reflecting surface 31.
Wherein, turbulent portion 32 is hemisphere.Turbulent portion 32 is set to hemisphere and mainly plays guide functions, more smooth when allowing fluid flow through this part body, be conducive to steady flow condition and reduce the pressure loss.
As shown in Figure 1, in embodiments of the invention, ultrasonic water meter also comprises two first installation through holes 15, the first installation through holes 15 be arranged on stream pipeline 1 and is communicated with the inside of stream pipeline 1, installs through holes 15 for two first and arranges with two ultrasonic transmitter-receiver 2 one_to_one corresponding respectively.
As shown in Figure 1, ultrasonic water meter also comprises two second installation through holes 16, the second installation through holes 16 be arranged on stream pipeline 1 and is communicated with the inside of stream pipeline 1, two reflecting element 3 corresponding inside being arranged on two second installation through holes 16 respectively.
Inner by ultrasonic transmitter-receiver 2 being arranged on the first installation through hole 15, it is inner that reflecting element 3 is arranged on the second installation through hole 16, can make that the structure of whole ultrasonic water meter is compacter, small volume.
Particularly, the first installation through hole 15 and the second installation through hole 16 are all arranged perpendicular to the first body 10.And the first installation through hole 15 and the second installation through hole 16 are all communicated with the inside of the first body 10.
As shown in Figure 1, ultrasonic water meter also comprises the reference column 17 be arranged on the first body 10 outer wall.Particularly, reference column 17 is two.Display module and controller are integrated into a modular one-piece construction, and this one-piece construction is supported on the first body 10 by reference column 17.
As shown in Figure 1, ultrasonic water meter also comprises the second body 20 and temperature sensor.Second body 20 is obliquely installed relative to the first body 10; Temperature sensor is arranged on the temperature treating fluid measured in the second body 20 with test.
Supersonic wave metering device of the present invention also comprises travel-time metering unit and flow rate calculation parts.Travel-time metering unit is for measuring the ultrasonic propagation time between two ultrasonic transmitter-receivers; Flow rate calculation parts calculate the flow of fluid to be batched according to the signal of travel-time metering unit transmission.
It is 0.05m that Fig. 3 a shows according to the fluid flow to be measured of ultrasonic water meter of the present invention
3the velocity profile of the fluid on stream central axis is positioned at during/h; It is 2.5m that Fig. 3 b shows according to the fluid flow to be measured of ultrasonic water meter of the present invention
3the velocity profile of the fluid on stream central axis is positioned at during/h.
In Fig. 3 a and Fig. 3 b, horizontal ordinate all represents the diverse location that effective sound path L2 of ultrasonic propagation is corresponding, and ordinate is flow velocity.Can be found by comparison diagram 3a and Fig. 3 b, along with the increase of fluid flow, the velocity distribution change on effective sound path L2 of N-type travel path is more level and smooth.
The rate of flow of fluid that the mistiming of propagating due to the ultrasound wave downstream propagation (namely successively along path L1, L2 and L3 propagate) launched according to ultrasonic transmitter-receiver 2 and adverse current obtains is the fluid mean flow rate on ultrasonic wave propagation path, fluid mean flow rate on ultrasonic wave propagation path need be modified to fluid mean flow rate on stream pipeline 1 xsect for obtaining stream fluids within pipes flow further, on ultrasonic wave propagation path, fluid velocity distribution is more level and smooth will more contribute to the correction of fluid mean flow rate on pipeline section.
It is 0.05m that Fig. 4 a shows according to the fluid flow to be measured of ultrasonic water meter of the present invention
3during/h a direction longitudinal section on Flow Field Distribution schematic diagram; It is 0.05m that Fig. 4 b shows according to the fluid flow to be measured of ultrasonic water meter of the present invention
3during/h another direction longitudinal section on Flow Field Distribution schematic diagram.
In fig .4, horizontal ordinate represents the diverse location that effective sound path L2 of ultrasonic propagation is corresponding, and ordinate represents the diverse location of stream pipeline horizontal cross-section; In fig. 4b, horizontal ordinate represents the diverse location that effective sound path L2 of ultrasonic propagation is corresponding, and ordinate represents the diverse location of stream pipeline vertical section.In figs. 4 a and 4b, different colours all represents different flow velocitys.
As shown in fig. 4 a, particularly, X represents the diverse location that fluid in the horizontal plane at the central axis place of stream pipeline 1 is corresponding.When treating that fluid measured is with 0.05m
3the flow of/h is by after above-mentioned ultrasonic water meter, and the flow velocity of the fluid in the horizontal plane between two reflecting elements 3 is comparatively large, flow field is comparatively steady, and particularly, flow velocity is more than or equal to 0.08m/s and is less than or equal to 0.12m/s; And the flow velocity being positioned at the fluid of reflecting element 3 upstream in left side is less, flow velocity is less than or equal to 0.08m/s, and similarly, the flow velocity being positioned at the fluid in the downstream of the reflecting element 3 on right side is also less, and flow velocity is less than 0.08m/s.
As shown in Figure 4 b, particularly, X represents the diverse location that fluid in the perpendicular at the central axis place of stream pipeline 1 is corresponding.When treating that fluid measured is with 0.05m
3the flow of/h is by after above-mentioned ultrasonic water meter, and as 0.24m≤X≤0.28m, the flow velocity of the fluid in the perpendicular between two reflecting elements 3 is comparatively large, flow field is comparatively steady, and flow velocity is for being more than or equal to 0.1m/s and being less than or equal to 0.12m/s; The flow velocity being positioned at the fluid of reflecting element 3 upstream, left side is less, and flow field change is comparatively large, and flow velocity is change in [-0.04,0.08] scope; Similarly, the flow velocity being positioned at the fluid in the downstream of right side reflecting element 3 is also less, and flow velocity is all less than 0.08m/s.
In like manner, Fig. 5 a shows according to the fluid flow to be measured of ultrasonic water meter of the present invention is 2.5m
3during/h a direction longitudinal section on Flow Field Distribution schematic diagram; It is 2.5m that Fig. 5 b shows according to the fluid flow to be measured of ultrasonic water meter of the present invention
3during/h another direction longitudinal section on Flow Field Distribution schematic diagram.
In figs. 5 a and 5b, horizontal ordinate all represents the diverse location that effective sound path L2 of ultrasonic propagation is corresponding; Difference is, in fig 5 a, ordinate represents the diverse location of stream pipeline horizontal cross-section, and in figure 5b, ordinate represents the diverse location of stream pipeline vertical section.In figs. 5 a and 5b, different colours all represents different flow velocitys.
As shown in Figure 5 a, particularly, X represents the diverse location that fluid in the horizontal plane at the central axis place of stream pipeline 1 is corresponding.When treating that fluid measured is with 2.5m
3the flow of/h is by after above-mentioned ultrasonic water meter, and the flow velocity of the fluid in the horizontal plane between two reflecting elements 3 is comparatively large, flow field is more steady.Particularly, as 0.235m≤X≤0.28m, the flow velocity of the fluid in the horizontal plane between two reflecting elements 3 is more than or equal to 5m/s and is less than or equal to 6m/s, and flow field is more steady; And being positioned at the flow velocity less (flow velocity is less than or equal to 4m/s) of the fluid of reflecting element 3 upstream in left side, flow field change is larger; Similarly, the flow velocity of the fluid in the downstream of the reflecting element 3 on right side is positioned at also less (flow velocity is less than or equal to 4m/s).
As shown in Figure 5 b, particularly, X represents the diverse location that fluid in the perpendicular at the central axis place of stream pipeline 1 is corresponding.When treating that fluid measured is with 2.5m
3the flow of/h is by after above-mentioned ultrasonic water meter, and the flow velocity of the fluid in the perpendicular between two reflecting elements 3 is comparatively large, flow field is more steady.Particularly, as 0.235m≤X≤0.285m, the flow velocity of the fluid in the perpendicular between two reflecting elements 3 is more than or equal to 4m/s and is less than or equal to 6m/s, and flow field is more steady; And being positioned at the flow velocity less (flow velocity is less than 4m/s) of the fluid of reflecting element 3 upstream in left side, flow field change is larger; Similarly, be positioned at the flow velocity of the fluid in the downstream of the reflecting element 3 on right side also less (flow velocity is less than or equal to 4m/s), flow field change is larger.
Can be found by comparison diagram 4a and Fig. 5 a or comparison diagram 4b and Fig. 5 b, near reflecting element 3, the flow field in stream pipeline 1 is due to the existence generation acute variation of reflecting element 3, but the flow field change degree near downstream reflecting element 3 is less than upstream region.Adopt the ultrasonic water meter with this N-type travel path, accomplish that the reflecting element 3 laying respectively at upstream and downstream becomes 180 degree of symmetries relative to the central axis of stream pipeline 1 from structure, be conducive to obtaining more stable Flow Field Distribution thus improve measuring accuracy.
Fig. 6 shows the schematic diagram that ultrasonic water meter according to the present invention carries out measurement result and the precision measured under different flow scope and temperature variation condition.In figure, dotted line is the flow error upper limit and lower limit that ultrasonic water meter reaches that 2 class precisions (2%) should meet.
Can find from Fig. 6, when treating that the flow of fluid measured is positioned at 0.025m
3/ h ~ 2.5m
3between/h, and temperature is when being respectively 25 DEG C, 38 DEG C, 50 DEG C, 60 DEG C and 80 DEG C, the measuring accuracy utilizing this ultrasonic water meter to carry out measuring can reach 2 class precision standards, and therefore this ultrasonic water meter has good measuring accuracy, and can adapt to larger temperature of fluid medium variation range.
Table 1 is the test result of ultrasonic water meter under different flow scope and different fluid temperature of ultrasonic water meter of the present invention and prior art to table 3.
The ultrasonic water meter of the ultrasonic water meter of the present embodiment and prior art is utilized to carry out the test result of testing during table 1 water temperature 21 DEG C respectively
The ultrasonic water meter of the ultrasonic water meter of the present embodiment and prior art is utilized to carry out the test result of testing during table 2 water temperature 50 DEG C respectively
The ultrasonic water meter of the ultrasonic water meter of the present embodiment and prior art is utilized to carry out the test result of testing during table 3 water temperature 50 DEG C respectively
Table 1 shows when treating that measurement of discharge water temperature is 21 DEG C, and fluid flow to be measured is respectively 0.05m
3/ h, 0.25m
3/ h and 2.5m
3during/h, the ultrasonic water meter of the ultrasonic water meter of the present embodiment and prior art is utilized to carry out the test result of testing.
As shown in table 1, under identical water temperature, when fluid measured is in different flows respectively, the mean value utilizing the ultrasonic water meter convection cell of the present embodiment to carry out the absolute relative error measured all is less than 2%, reaches 2 class precision requirements.
The measuring accuracy (i.e. relative error magnitudes) utilizing the ultrasonic water meter convection cell of prior art to carry out measuring is then comparatively large, when fluid flow to be measured is 2.5m
3during/h, measuring accuracy is 2.22%; When fluid flow to be measured is 0.25m
3/ h, measuring accuracy is 2.6%; When fluid flow to be measured is 0.05m
3/ h, measuring accuracy is 5.72%.
Table 2 shows when treating that measurement of discharge water temperature is 50 DEG C, and fluid flow to be measured is respectively 0.05m
3/ h, 0.25m
3/ h and 2.5m
3during/h, the ultrasonic water meter of the ultrasonic water meter of the present embodiment and prior art is utilized to carry out the test result of testing.
As shown in table 2, when the water temperature of fluid to be measured is 50 DEG C, when fluid flow to be measured is respectively 0.05m
3/ h, 0.25m
3/ h and 2.5m
3during/h, compared with prior art, the mean value utilizing the ultrasonic water meter convection cell of the present embodiment to carry out the measuring accuracy measured all increases.
Table 3 shows when treating that measurement of discharge water temperature is 50 DEG C, and fluid flow to be measured is respectively 0.03m
3/ h, 0.15m
3/ h and 1.5m
3during/h, the ultrasonic water meter of the ultrasonic water meter of the present embodiment and prior art is utilized to carry out the test result of testing respectively.
Can be found by contrast table 1, table 2 and table 3, ultrasonic water meter of the present invention is ensureing that under the condition that precision is up to standard, convection cell temperature variation has good adaptability, and ultrasonic water meter of the present invention has more superior overall performance.
Due to ultrasonic water meter measuring accuracy comparatively prior art increase, so the measuring accuracy comprising ultrasonic water meter is also higher.
From above description, can find out, the above embodiments of the present invention achieve following technique effect: two ultrasonic transmitter-receivers are 180 ° relative to the central axis of stream pipeline and are symmetrical arranged, and namely two ultrasonic transmitter-receivers are placed in the both sides of stream pipeline upstream and downstream respectively; Two reflecting elements are 180 ° relative to the central axis of stream pipeline 1 and are symmetrical arranged and two reflecting elements corresponding opposite side being arranged on two ultrasonic transmitter-receivers respectively, and the ultrasound wave of a ultrasonic transmitter-receiver transmitting is received by another ultrasonic transmitter-receiver to make ultrasound wave form N-type travel path in stream pipeline respectively after two reflecting elements reflections; By above-mentioned setting, be symmetrical arranged because two reflecting elements are 180 ° relative to the central axis of stream pipeline, thus it is more smooth and easy to make stream pipeline flow field change, be conducive to obtaining more stable Flow Field Distribution in the pipeline between two reflection subassemblies, be conducive to measuring, improve measuring accuracy, and not easily block.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a ultrasonic water meter, is characterized in that, described ultrasonic water meter comprises:
First body (10), described first body (10) has stream pipeline (1) and the water inlet (13) be connected with described stream pipeline (1) respectively and water delivering orifice (14);
Supersonic wave metering device, described supersonic wave metering device comprises two ultrasonic transmitter-receivers (2), and two described ultrasonic transmitter-receivers (2) are arranged on the upper and axially spaced-apart along described stream pipeline (1) of described first body (10) and arrange; Two reflecting elements (3), be arranged on the inside of described stream pipeline (1), wherein, two described reflecting elements (3) and two described ultrasonic transmitter-receiver (2) one_to_one corresponding are arranged, the centerline axis parallel of the travel path of the ultrasound wave launched of described ultrasonic transmitter-receiver (2) between described two reflecting elements (3) and described stream pipeline (1) or overlap;
Display module, is arranged on the outer wall of described first body (10);
Controller, described supersonic wave metering device and described display module are electrically connected with described controller respectively, and described controller receives the signal of described supersonic wave metering device transmission and is presented on described display module by metric results.
2. ultrasonic water meter according to claim 1, it is characterized in that, the ultrasound wave that described ultrasonic transmitter-receiver (2) is launched is received by ultrasonic transmitter-receiver described in another (2) to make described ultrasound wave form N-type travel path in described stream pipeline (1) respectively after described two reflecting elements (3) reflection.
3. ultrasonic water meter according to claim 2, it is characterized in that, two described ultrasonic transmitter-receivers (2) axially shifting to install in described stream pipeline (1), and two described ultrasonic transmitter-receiver (2) intervals in the circumference of described stream pipeline (1) are arranged.
4. ultrasonic water meter according to claim 3, is characterized in that, two described ultrasonic transmitter-receivers (2) are 180 ° relative to the central axis of described stream pipeline (1) and are symmetrical arranged.
5. ultrasonic water meter according to claim 2, it is characterized in that, two described reflecting elements (3) axially shifting to install in described stream pipeline (1), and two described reflecting element (3) intervals in the circumference of described stream pipeline (1) are arranged.
6. ultrasonic water meter according to claim 2, it is characterized in that, between the ultrasound wave that described ultrasonic transmitter-receiver (2) is launched and the reflecting surface of a described reflecting element (3), there is the first incident angle α, there is between the reflecting surface of the ultrasound wave that ultrasonic transmitter-receiver described in another (2) receives and reflecting element described in another (3) the second incident angle β.
7. ultrasonic water meter according to claim 6, is characterized in that, described first incident angle α and described second incident angle β is 45 °.
8. ultrasonic water meter according to any one of claim 1 to 7, it is characterized in that, described stream pipeline (1) comprise the first pipeline section (11) and respectively correspondence be arranged on two second pipeline sections (12) at described first pipeline section (11) two ends, wherein, the internal diameter of described first pipeline section (11) is less than the internal diameter of described second pipeline section (12), two described reflecting elements (3) respectively correspondence to be arranged on two described second pipeline sections (12) inner.
9. ultrasonic water meter according to any one of claim 1 to 7, is characterized in that, the turbulent portion (32) that described reflecting element (3) comprises reflecting surface (31) and is connected with described reflecting surface (31).
10. ultrasonic water meter according to any one of claim 1 to 7, it is characterized in that, described ultrasonic water meter also comprise be arranged on described stream pipeline (1) tube wall on two first install through hole (15), described first installs through hole (15) is communicated with the inside of described stream pipeline (1), installs through hole (15) for two described first and arranges with two described ultrasonic transmitter-receiver (2) one_to_one corresponding respectively.
11. ultrasonic water meters according to any one of claim 1 to 7, it is characterized in that, described ultrasonic water meter also comprise be arranged on described stream pipeline (1) tube wall on two second install through hole (16), described second installs through hole (16) is communicated with the inside of described stream pipeline (1), and two described reflecting elements (3) respectively correspondence are arranged on the inside of described two second installations through hole (16).
12. ultrasonic water meters according to any one of claim 1 to 7, is characterized in that, described supersonic wave metering device also comprises:
Travel-time metering unit, for measuring the ultrasonic propagation time between described two ultrasonic transmitter-receivers (2);
Flow rate calculation parts, calculate the flow of fluid to be batched according to the signal of described travel-time metering unit transmission.
13. ultrasonic water meters according to any one of claim 1 to 7, is characterized in that, described ultrasonic water meter also comprises:
Second body (20), described second body (20) is obliquely installed relative to described first body (10);
Temperature sensor, described temperature sensor is arranged on the temperature treating fluid measured in described second body (20) with test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993130.4A CN105424110A (en) | 2015-12-24 | 2015-12-24 | Ultrasonic wave water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993130.4A CN105424110A (en) | 2015-12-24 | 2015-12-24 | Ultrasonic wave water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105424110A true CN105424110A (en) | 2016-03-23 |
Family
ID=55502475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510993130.4A Pending CN105424110A (en) | 2015-12-24 | 2015-12-24 | Ultrasonic wave water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105424110A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572015A (en) * | 2017-12-31 | 2018-09-25 | 深圳市前海海洋仪表科技有限公司 | The ultrasonic water meter of deflection installation detecting pipe |
| CN109855693A (en) * | 2019-03-26 | 2019-06-07 | 杨启敖 | Ultrasonic water meter apparatus with leak protection and prefilter |
| CN110412134A (en) * | 2018-04-30 | 2019-11-05 | 比尔克特韦尔克有限两合公司 | Fluid measurement instrument |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0897101A1 (en) * | 1997-08-14 | 1999-02-17 | Electrowatt Technology Innovation AG | Ultrasonic flowmeter |
| JP2005338055A (en) * | 2004-04-27 | 2005-12-08 | Aichi Tokei Denki Co Ltd | Ultrasonic flowmeter |
| CN101365927A (en) * | 2005-12-06 | 2009-02-11 | 迪格梅萨股份公司 | Ultrasound measuring section made from plastic and corresponding measuring method |
| CN101907473A (en) * | 2010-07-05 | 2010-12-08 | 李俊国 | Ultrasonic flowmeter |
| CN201724699U (en) * | 2010-06-25 | 2011-01-26 | 江西三川水表股份有限公司 | Turbulence-treated flow meter tube of cleanable ultraviolet heat meter |
| CN102384773A (en) * | 2011-11-10 | 2012-03-21 | 吉林市宏远仪表有限责任公司 | N-type reflection flow tube for ultrasonic heat meter |
| CN102680041A (en) * | 2012-05-18 | 2012-09-19 | 史雪丽 | Bulk pipe assembly structure for ultrasonic signal Z-shaped transmission |
| CN205449178U (en) * | 2015-12-24 | 2016-08-10 | 东京计装株式会社 | Ultrasonic water meter |
-
2015
- 2015-12-24 CN CN201510993130.4A patent/CN105424110A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0897101A1 (en) * | 1997-08-14 | 1999-02-17 | Electrowatt Technology Innovation AG | Ultrasonic flowmeter |
| JP2005338055A (en) * | 2004-04-27 | 2005-12-08 | Aichi Tokei Denki Co Ltd | Ultrasonic flowmeter |
| CN101365927A (en) * | 2005-12-06 | 2009-02-11 | 迪格梅萨股份公司 | Ultrasound measuring section made from plastic and corresponding measuring method |
| CN201724699U (en) * | 2010-06-25 | 2011-01-26 | 江西三川水表股份有限公司 | Turbulence-treated flow meter tube of cleanable ultraviolet heat meter |
| CN101907473A (en) * | 2010-07-05 | 2010-12-08 | 李俊国 | Ultrasonic flowmeter |
| CN102384773A (en) * | 2011-11-10 | 2012-03-21 | 吉林市宏远仪表有限责任公司 | N-type reflection flow tube for ultrasonic heat meter |
| CN102680041A (en) * | 2012-05-18 | 2012-09-19 | 史雪丽 | Bulk pipe assembly structure for ultrasonic signal Z-shaped transmission |
| CN205449178U (en) * | 2015-12-24 | 2016-08-10 | 东京计装株式会社 | Ultrasonic water meter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572015A (en) * | 2017-12-31 | 2018-09-25 | 深圳市前海海洋仪表科技有限公司 | The ultrasonic water meter of deflection installation detecting pipe |
| CN110412134A (en) * | 2018-04-30 | 2019-11-05 | 比尔克特韦尔克有限两合公司 | Fluid measurement instrument |
| CN110412134B (en) * | 2018-04-30 | 2024-06-25 | 比尔克特韦尔克有限两合公司 | Fluid measuring device |
| CN109855693A (en) * | 2019-03-26 | 2019-06-07 | 杨启敖 | Ultrasonic water meter apparatus with leak protection and prefilter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203785713U (en) | Ultrasonic flow metering system with function of controlling laminar-turbulent transitional flow | |
| WO2017004887A1 (en) | Method and apparatus for measuring time-difference-type ultrasonic flow | |
| ITTO960239A1 (en) | DETECTOR FOR AN ULTRASONIC FLOW METER AND FLOW METER WITH DETECTOR | |
| CN104501889A (en) | Detection method and device for ultrasonic flow based on cross-correlation time difference method | |
| CN103983312B (en) | Bullet-nose flow straightener | |
| Inoue et al. | A study of ultrasonic propagation for ultrasonic flow rate measurement | |
| KR101361470B1 (en) | Ultrasonic flowmeter and calorimeter | |
| CN105424110A (en) | Ultrasonic wave water meter | |
| CN103983316A (en) | Bullet type flow stabilizer | |
| CN102829829A (en) | Method and device for detecting ultrasonic flow by time-difference method | |
| CN203732108U (en) | Ultrasonic water meter pipeline structure with high stability and small initial motion | |
| CN110646043A (en) | Low-channel-number gas ultrasonic flow measurement method | |
| CN101726336A (en) | Ultrasonic flow meter | |
| CN102829830A (en) | Method and device used for detecting spreading speed of ultrasonic waves in ultrasonic flow detection | |
| CN205449178U (en) | Ultrasonic water meter | |
| WO2009074162A1 (en) | Ultrasonic type fluid flow measurement apparatus | |
| CN205449335U (en) | Ultrasonic heat energy meter | |
| CN205449177U (en) | Ultrasonic wave metering device | |
| CN103471671A (en) | N-shaped correlation single-pass single channel of gas flow meter | |
| CN203704996U (en) | Ultrasonic heat meter pipeline | |
| CN103471670A (en) | V-shaped correlation single-pass single channel of gas flow meter | |
| CN105444924A (en) | Ultrasonic heat meter | |
| CN105424111A (en) | Ultrasonic wave metering device | |
| CN206787740U (en) | A kind of two-channel body for ultrasonic calorimeter | |
| CN202216726U (en) | Rotary current regulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |