CN114413984A - Ultrasonic water meter - Google Patents
Ultrasonic water meter Download PDFInfo
- Publication number
- CN114413984A CN114413984A CN202210327730.7A CN202210327730A CN114413984A CN 114413984 A CN114413984 A CN 114413984A CN 202210327730 A CN202210327730 A CN 202210327730A CN 114413984 A CN114413984 A CN 114413984A
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- Prior art keywords
- ultrasonic
- pipe section
- water meter
- reflector
- meter
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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
- G01F1/662—Constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to the technical field of water meters, and discloses an ultrasonic water meter which comprises a metering pipe section, two ultrasonic transducers for receiving and transmitting ultrasonic waves, an ultrasonic reflector, an electronic module, an instrument shell, an upper cover, 4 spring thimbles and two bolts. The metering pipe section has a simple internal structure and does not have a turbulent flow device, so that the integral injection molding of the metering pipe section can be realized in the process, and the ultrasonic reflector is arranged outside the metering pipe section, is not easy to corrode or scale and does not pollute flowing media, so that the ultrasonic water meter can finish long-term high-precision metering of the flowing media.
Description
Technical Field
The invention relates to the technical field of water meters, in particular to an ultrasonic water meter.
Background
The ultrasonic water meter is a novel water meter which further calculates the flow of the outlet water by detecting the time difference generated by the change of the speed when the ultrasonic sound beam propagates in the downstream and the upstream in the water and analyzing and processing the flow to obtain the flow rate of the outlet water.
The upper part of a metering pipe section of the existing ultrasonic water meter is generally provided with an opening, and the upper part of the metering pipe section of the existing ultrasonic water meter is assembled with a transducer main body in a hot melting or locking connection mode, so that the process flow is complex. The ultrasonic water meter needs to be in service for a long time and is easily influenced by the change of a severe environment, and the assembled and formed ultrasonic water meter has the risk of water vapor invasion or bead condensation, so that electronic components are possibly corroded and further lose efficacy. To achieve a good sealing of the housing requires high manufacturing costs. The mounting of the ultrasonic reflector inside the flow channel of the metering tube segment increases the instability of the flow field. At the same time, the types of reflectors that can be selected are very limited under the influence of the flowing medium, as reflectors of ultrasonic water meters for metering drinking water for residents must meet national sanitary standards. Prolonged exposure of the reflector to the flowing medium also takes into account corrosion and fouling, which leads to reduced metering accuracy and reduced service life.
Disclosure of Invention
The invention provides an ultrasonic water meter aiming at the defects of the prior art, the internal structure of a metering pipe section is simple, no turbulent flow device exists, so that the integral injection molding of the metering pipe section can be realized in the process, an ultrasonic reflector is arranged outside the metering pipe section, is not easy to corrode or scale and does not pollute flowing media, and the ultrasonic water meter can finish long-term high-precision metering of the flowing media.
The purpose of the invention can be realized by the following technical scheme:
an ultrasonic water meter comprises a metering pipe section, two ultrasonic transducers for receiving and transmitting ultrasonic waves, an ultrasonic reflector, an electronic module, an instrument shell, an upper cover, 4 spring thimbles and two bolts, wherein the ultrasonic transducer is arranged on the metering pipe section;
the metering pipe section comprises transducer mounting grooves corresponding to the number of the ultrasonic transducers and reflector mounting grooves corresponding to the number of the ultrasonic reflectors;
the electronic module comprises a battery, a circuit board and a display screen;
wherein the circuit board is provided with two limiting holes;
the connection relationship is as follows: the upper cover covers the upper part of the instrument shell and is connected with the instrument shell in a threaded screwing mode; the circuit board is positioned below the upper cover and is connected with the instrument shell through two bolts; the battery is arranged above the circuit board and used for supplying power to the circuit board; the display screen is positioned above the battery and is connected with the circuit board; the metering pipe section is positioned below the meter shell and is integrally injected with the meter shell; the transducer mounting groove is positioned on the outer side wall above the metering pipe section, and the ultrasonic transducer is bonded in the transducer mounting groove through epoxy resin; the reflector mounting groove is positioned on the outer side wall below the metering pipe section, and the ultrasonic reflector is sealed in the reflector mounting groove in a glue pouring manner; the spring ejector pins are welded in the limiting holes, every two spring ejector pins are connected with one ultrasonic transducer, and signal transmission between the ultrasonic transducers and the circuit board is achieved through the spring ejector pins.
Preferably, during operation of the ultrasonic water meter, one ultrasonic transducer emits an ultrasonic signal which propagates through the flowing medium in the metering tube section, is reflected by the ultrasonic reflector, and to the other ultrasonic transducer for receiving the ultrasonic signal.
Preferably, the instrument shell and the upper cover can be connected in a glue-pouring sealing mode.
Preferably, the number of the ultrasonic transducers is even.
Preferably, the middle part of the upper cover is transparent.
Preferably, the material of the metering tube segment and the instrument housing which are integrally injection-molded is polyphenyl thioether doped with 30% glass fiber.
Preferably, the upper cover is connected with the instrument shell in a threaded manner, and the protection grade after the upper cover is screwed reaches IP 68.
Preferably, the material of the ultrasonic reflector is stainless steel.
The invention has the beneficial technical effects that: in order to overcome the conditions that the existing ultrasonic water meter is complex in structure and has assembly errors, the invention provides an ultrasonic water meter design, an integrated metering pipe section is only provided with a flowing medium inlet and a flowing medium outlet, the flowing medium environment is guaranteed to be isolated from an instrument shell, the flowing medium leakage and invasion caused by long-time work of the ultrasonic water meter are avoided, the air tightness of the shell is guaranteed, a drying agent does not need to be placed in the shell, the flowing medium leakage caused by long-time work is avoided, and the cost is saved. The external installation of the ultrasonic reflector can ensure that the internal structure of the metering pipe section is simple, the ultrasonic reflector is not required to be used as an internal insert, the flow field is more stable, the metering precision is higher, meanwhile, the pressure loss of the metering pipe section is very small due to the reduction of the turbulence structure members, the pressure loss is close to that of the straight-through pipe section, the external ultrasonic reflector has the advantage of avoiding the direct contact between the ultrasonic reflector and a flowing medium, on one hand, the risk that the metering precision is influenced due to the fact that the ultrasonic reflector is corroded due to long-time work is avoided, on the other hand, the selection range of the reflector is expanded due to the fact that the external installation is not influenced by the flowing medium, and the phenomenon that the reflector pollutes the flowing medium is avoided.
Drawings
Fig. 1 is a structural diagram of an ultrasonic water meter according to an embodiment of the present invention.
FIG. 2 is a schematic illustration of a transducer at a groove in an embodiment of the invention.
Fig. 3 is a schematic diagram of the metering principle in an embodiment of the present invention.
Description of reference numerals: 1. an upper cover; 2. an instrument housing; 3. an electronic module; 303. a display screen; 302. a battery; 301. a circuit board; 4. a spring thimble; 5. a metering tube section; 6. an ultrasonic transducer; 601. a piezoelectric ceramic cathode of the ultrasonic transducer; 603. an upstream ultrasonic transducer; 604. a downstream ultrasonic transducer; 7. an ultrasonic reflector; 8. and (4) bolts.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1, an ultrasonic water meter includes a metering pipe section 5, two ultrasonic transducers 6 for receiving and transmitting ultrasonic waves, an ultrasonic reflector 7, an electronic module 3, an instrument housing 2, an upper cover 1, 4 pogo pins 4, and two bolts 8.
The metering pipe section 5 includes transducer mounting grooves corresponding to the number of ultrasonic transducers, and reflector mounting grooves corresponding to the number of ultrasonic reflectors.
The electronic module 3 comprises a battery 302, a circuit board 301, a display 303.
Wherein the circuit board 301 has two position limiting holes.
The connection relationship is as follows: the upper cover 1 covers the meter shell 2 and is connected with the meter shell 2 in a threaded screwing mode, and the protection level of IP68 is achieved after screwing; the circuit board 301 is positioned below the upper cover 1 and connected with the instrument shell 2 through two bolts 8; the battery 302 is arranged above the circuit board 301 and used for supplying power to the circuit board 301; the display screen 303 is positioned above the battery 302 and connected with the circuit board 301, and the middle part of the upper cover 1 is transparent, so that the content of the display screen 303 can be directly observed from the outside; the metering pipe section 5 is an integrated straight-through pipe section, only an inlet and an outlet of a fluid medium are arranged below the instrument shell 2, and the metering pipe section and the instrument shell 2 are integrally injection-molded, wherein in the embodiment, polyphenyl thioether PPS doped with 30% of glass fiber is selected as an injection-molded material, so that the performance requirement of the ultrasonic transducer 6 on signal receiving and transmitting is met, and the compressive strength of the metering pipe section 5 is increased; the ultrasonic transducer is different from the design of the opening of the metering pipe section 5, the transducer mounting groove is a part of the metering pipe section 5 and is positioned on the outer side wall above the metering pipe section 5, and the ultrasonic transducer 6 is bonded in the transducer mounting groove through epoxy resin; the reflector mounting groove is positioned on the lower outer side wall of the metering pipe section 5, the ultrasonic reflector 7 is sealed in the reflector mounting groove in a glue pouring manner, and 316L stainless steel is preferably used as the material of the ultrasonic reflector 7; the spring ejector pins 4 are welded in the limiting holes, every two spring ejector pins 4 are connected with one ultrasonic transducer 6, and signal transmission between the ultrasonic transducers 6 and the circuit board 301 is achieved through the spring ejector pins 4.
As shown in fig. 2, the ultrasonic transducer 6 is actually a piezoelectric ceramic, and is bonded in the transducer mounting groove by epoxy resin, the piezoelectric ceramic is a flanging electrode, the positive electrode and the negative electrode are on one side, 601 is a piezoelectric ceramic negative electrode in the figure, the rest is a positive electrode, and the two spring thimbles 4 are respectively connected with the positive electrode and the negative electrode of the piezoelectric ceramic, so as to realize signal transmission between the ultrasonic transducer 6 and the circuit board 301.
As shown in fig. 3, the ultrasonic water meter of the present invention is suitable for measuring the average flow velocity of a flowing medium, wherein the ultrasonic transducer 6 is a dual-purpose type for transmitting and receiving signals, the water flow direction in fig. 3 is set from left to right, when a metering module in the electronic module 3 transmits a pulse signal to the upstream ultrasonic transducer 603 through the pogo pin 4, the upstream ultrasonic transducer 603 generates an inverse piezoelectric effect to generate an ultrasonic signal, the ultrasonic signal passes through the ultrasonic reflector 7 to change a propagation path and finally reaches the downstream ultrasonic transducer 604, the downstream ultrasonic transducer 604 generates a positive piezoelectric effect to generate an electric signal to be fed back to the electronic module 3, and the transmission time of the ultrasonic signal at this time is recorded as TupAt the same time, the downstream ultrasonic transducer 604 emits an ultrasonic signal with a transit time T, which passes through the ultrasonic reflector 7 to change the propagation path to the upstream ultrasonic transducer 603downThe metering module is based on the data TupAnd TdownAnd calculating the difference value to finally obtain data such as average flow velocity, accumulated flow, temperature and the like.
The above-mentioned embodiments are illustrative of the specific embodiments of the present invention, and are not restrictive, and those skilled in the relevant art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should be included in the scope of the present invention.
Claims (8)
1. An ultrasonic water meter is characterized by comprising a metering pipe section, two ultrasonic transducers for receiving and transmitting ultrasonic waves, an ultrasonic reflector, an electronic module, an instrument shell, an upper cover, 4 spring thimbles and two bolts, wherein the metering pipe section is provided with a plurality of spring thimbles;
the metering pipe section comprises transducer mounting grooves corresponding to the number of the ultrasonic transducers and reflector mounting grooves corresponding to the number of the ultrasonic reflectors;
the electronic module comprises a battery, a circuit board and a display screen;
wherein the circuit board is provided with two limiting holes;
the connection relationship is as follows: the upper cover covers the upper part of the instrument shell and is connected with the instrument shell in a threaded screwing mode; the circuit board is positioned below the upper cover and is connected with the instrument shell through two bolts; the battery is arranged above the circuit board and used for supplying power to the circuit board; the display screen is positioned above the battery and is connected with the circuit board; the metering pipe section is an integrated straight-through pipe section, is not provided with an opening, is positioned below the meter shell and is integrally injected with the meter shell; the transducer mounting groove is positioned on the outer side wall above the metering pipe section, and the ultrasonic transducer is bonded in the transducer mounting groove through epoxy resin; the reflector mounting groove is positioned on the outer side wall below the metering pipe section, and the ultrasonic reflector is sealed in the reflector mounting groove in a glue pouring manner; the spring ejector pins are welded in the limiting holes, every two spring ejector pins are connected with one ultrasonic transducer, and signal transmission between the ultrasonic transducers and the circuit board is achieved through the spring ejector pins.
2. An ultrasonic water meter as set forth in claim 1, wherein during operation of the ultrasonic water meter, one of the ultrasonic transducers emits an ultrasonic signal which travels through the flow medium in the meter pipe section, is reflected by the ultrasonic reflector, and travels to the other ultrasonic transducer for receiving the ultrasonic signal.
3. An ultrasonic water meter as claimed in claim 1, wherein the connection between the meter housing and the top cover is also by glue-pouring.
4. An ultrasonic water meter as set forth in claim 1, wherein said ultrasonic transducers are provided in an even number.
5. An ultrasonic water meter as set forth in claim 1, wherein said top cover is transparent in a middle portion thereof.
6. An ultrasonic water meter as set forth in claim 1, wherein said meter tube section is integrally injection molded with the meter housing from a polyphenylene sulfide compound with 30% glass fiber.
7. An ultrasonic water meter as set forth in claim 1, wherein said cover is threadably connected to said meter housing, and wherein said cover is rated to IP 68.
8. An ultrasonic water meter as set forth in claim 1, wherein said ultrasonic reflector is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327730.7A CN114413984A (en) | 2022-03-31 | 2022-03-31 | Ultrasonic water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327730.7A CN114413984A (en) | 2022-03-31 | 2022-03-31 | Ultrasonic water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114413984A true CN114413984A (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210327730.7A Pending CN114413984A (en) | 2022-03-31 | 2022-03-31 | Ultrasonic water meter |
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| Country | Link |
|---|---|
| CN (1) | CN114413984A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115079147A (en) * | 2022-07-21 | 2022-09-20 | 成都汇通西电电子有限公司 | Ultrasonic sensor |
| CN115876269A (en) * | 2022-11-29 | 2023-03-31 | 青岛鼎信通讯科技有限公司 | Multi-channel ultrasonic water meter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06160136A (en) * | 1992-11-18 | 1994-06-07 | Tokico Ltd | Acoustic wave sensor |
| CN2881562Y (en) * | 2006-03-31 | 2007-03-21 | 张力新 | Converter for ultrasonic watermeter, ultrasonic flowmeter, ultrasonic heat meter |
| CN202403838U (en) * | 2011-12-19 | 2012-08-29 | 承德市新龙电子有限责任公司 | Tube section structure of ultrasonic heat meter transducer |
| CN204313902U (en) * | 2015-01-05 | 2015-05-06 | 上海迪纳声科技股份有限公司 | The Ultrasonic water meter with rectification function measures pipeline section |
| CN107817028A (en) * | 2017-12-15 | 2018-03-20 | 瑞纳智能设备股份有限公司 | A kind of integral type sonac |
| CN109141556A (en) * | 2018-08-31 | 2019-01-04 | 浙江启尔机电技术有限公司 | A kind of embedded broad beam ultrasonic liquid flow measurement device of piezoelectric vibrator |
| CN215726163U (en) * | 2021-09-10 | 2022-02-01 | 威海市天罡仪表股份有限公司 | Ultrasonic sensor and meter body integrated flowmeter |
-
2022
- 2022-03-31 CN CN202210327730.7A patent/CN114413984A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06160136A (en) * | 1992-11-18 | 1994-06-07 | Tokico Ltd | Acoustic wave sensor |
| CN2881562Y (en) * | 2006-03-31 | 2007-03-21 | 张力新 | Converter for ultrasonic watermeter, ultrasonic flowmeter, ultrasonic heat meter |
| CN202403838U (en) * | 2011-12-19 | 2012-08-29 | 承德市新龙电子有限责任公司 | Tube section structure of ultrasonic heat meter transducer |
| CN204313902U (en) * | 2015-01-05 | 2015-05-06 | 上海迪纳声科技股份有限公司 | The Ultrasonic water meter with rectification function measures pipeline section |
| CN107817028A (en) * | 2017-12-15 | 2018-03-20 | 瑞纳智能设备股份有限公司 | A kind of integral type sonac |
| CN109141556A (en) * | 2018-08-31 | 2019-01-04 | 浙江启尔机电技术有限公司 | A kind of embedded broad beam ultrasonic liquid flow measurement device of piezoelectric vibrator |
| CN215726163U (en) * | 2021-09-10 | 2022-02-01 | 威海市天罡仪表股份有限公司 | Ultrasonic sensor and meter body integrated flowmeter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115079147A (en) * | 2022-07-21 | 2022-09-20 | 成都汇通西电电子有限公司 | Ultrasonic sensor |
| CN115876269A (en) * | 2022-11-29 | 2023-03-31 | 青岛鼎信通讯科技有限公司 | Multi-channel ultrasonic water meter |
| CN115876269B (en) * | 2022-11-29 | 2024-01-12 | 青岛鼎信通讯科技有限公司 | Multichannel ultrasonic water meter |
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Application publication date: 20220429 |