CN108692777A - A kind of New Transit-time Ultrasonic Flowmeter - Google Patents
A kind of New Transit-time Ultrasonic Flowmeter Download PDFInfo
- Publication number
- CN108692777A CN108692777A CN201810285384.4A CN201810285384A CN108692777A CN 108692777 A CN108692777 A CN 108692777A CN 201810285384 A CN201810285384 A CN 201810285384A CN 108692777 A CN108692777 A CN 108692777A
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- Prior art keywords
- ultrasonic
- ultrasonic wave
- matching layer
- wave transducer
- time
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Classifications
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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
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a kind of New Transit-time Ultrasonic Flowmeters.A kind of novel ultrasonic wave transducer is provided, matching layer, insulating cement, piezoelectric patches, outsourcing shell and conducting wire are equipped with, novel ultrasonic wave transducer has two sides structure, is responsible for sending signal on one side, is responsible for receiving signal on one side.By the mounting means for changing ultrasonic flowmeter so that fair current and the sampling of adverse current have synchronism, can preferably capture the variation of flow velocity in the short time, improve the precision of metering.
Description
Technical field
The present invention relates to ultrasonic flowmeter more particularly to a kind of New Transit-time Ultrasonic Flowmeters.
Background technology
Ultrasonic flowmeter is a kind of contactless flowrate measuring tool, to fluid state without any shadow in measurement process
It rings, has the characteristics that high-precision, high stability.In traditional ultrasonic flowmeter, ultrasonic transducer is both used as transmitter,
It is used as receiver again, cannot work at the same time, is in Discontinuous sampling state, fair current and the sampling of adverse current not simultaneously, can not be accurate
The timely flow regime of reacting fluid can cause large effect to the precision of metering, solve the problems, such as that synchronized sampling is compeled in eyebrow
Eyelash.
Invention content
The purpose of the present invention is being the synchronism for improving data acquisition, a kind of novel Time-difference Ultrasonic Flow is provided
Meter, specific technical solution are as follows:
A kind of New Transit-time Ultrasonic Flowmeter includes mainly novel ultrasonic wave transducer, pipeline, reflector plate;It is novel
Ultrasonic transducer can be used as supersonic generator and ultrasonic receiver to work simultaneously.
The novel ultrasonic wave transducer includes matching layer, insulating cement, piezoelectric patches, outsourcing shell and conducting wire.
The novel ultrasonic wave transducer has two matching layers, and inclined matching layer is as ultrasonic transmitter, vertically
Matching layer as ultrasonic receiver.
The angle [alpha] of the inclined matching layer of the novel ultrasonic wave transducer is 45 °~50 °, and matching layer is circle.
The outsourcing shell of the novel ultrasonic wave transducer has the characteristic of vibration damping sound absorption.
The present invention is in a preferable case study on implementation, and novel ultrasonic wave transducer uses diagonal mounting means, with reflection
Piece installs one parallelogram sturcutre of corresponding composition, and the propagation sound channel of ultrasonic wave constitutes a parallelogram.
The propagation sound channel of the ultrasonic signal can be parallelogram or diamond shape.
The present invention in a preferable case study on implementation, due to ultrasonic signal the spread speed close to pipeline wall surface by
The influence of fluid flow rate is smaller, and near wall propagation distance is L, therefore can be approximately considered ultrasonic signal in upper and lower two nearly walls
The propagation time in face is identical.
The shorter the near wall propagation distance L the better in the case where not influencing ultrasonic signal.
Compared with existing ultrasonic flowmeter, the beneficial effects of the invention are as follows:The present invention can realize fair current sampling and it is inverse
The synchronism for flowing sampling, improves the precision of measurement.
Description of the drawings
When considered in conjunction with the accompanying drawings, it by referring to following detailed description, better understood when of the invention and easy
It learns the adjoint advantage of many of which, but attached drawing described herein is used to provide further understanding of the present invention, constitutes this
A part for invention, illustrative examples of the invention and explanation are not constituted for explaining the present invention to the improper of the present invention
It limits, wherein:
Fig. 1 is the structural schematic diagram of ultrasonic flowmeter installation of the present invention.
Fig. 2 is the structural schematic diagram of novel ultrasonic wave transducer.
Specific implementation mode
Below in conjunction with the accompanying drawings, it is further illustrated the present invention with embodiment.But this embodiment is merely illustrative, this hair
Bright protection domain is not limited by this embodiment.
As shown in Figure 1, a kind of New Transit-time Ultrasonic Flowmeter, including novel ultrasonic wave transducer 23, novel ultrasonic
Wave transducer 25, reflector plate 22, reflector plate 24, pipeline 21.The inclination surface launching ultrasonic signal of novel ultrasonic wave transducer, warp
The reflection of reflector plate is crossed, vertical plane can receive ultrasonic signal, and the ultrasonic signal of concurrent-countercurrent can be carried out at the same time transmission, connect
It receives, reduces the error generated when time of measuring difference, improve the precision of measurement.
As shown in Fig. 2, novel ultrasonic wave transducer, including matching layer 1, matching layer 7, piezoelectric patches 8, piezoelectric patches 9, outer envelope
Body 2, insulating cement 6, signal wire 3, ground wire 4 and signal wire 5.Compared with traditional transducers, new type ultrasonic transducing of the invention
Device matching layer 1, in some frequency band, pumping signal is passed to by signal wire 3, is acted on piezoelectric patches 9 and is driven 1 one starting of oscillation of matching layer
It is dynamic, the ultrasonic beam perpendicular to matching layer can be generated on matching layer, simultaneously because the effect of outsourcing shell 2, piezoelectric patches 8 and
It is unaffected with layer 7;When matching layer 7 receives ultrasonic beam, piezoelectric patches 8 can be acted on and be converted into electric signal, pass through signal wire 5
It passes out, due to the effect of outsourcing shell 2, piezoelectric patches 9 and matching layer 1 are unaffected.
A kind of New Transit-time Ultrasonic Flowmeter is included the following steps using the method that it is measured:
Step 1) as shown in Figure 1, when starting to measure, novel ultrasonic wave transducer 23,25 is excited simultaneously, is being tilted
Matching layer on generate ultrasonic beam, the ultrasonic beam that the matching layer of the inclined surface of novel ultrasonic wave transducer 23 generates passes through anti-
The reflection of piece 22 is penetrated, the vertical plane for being transmitted to novel ultrasonic wave transducer 25 receives, and completes adverse current and samples, you can obtains the adverse current time
Value;The ultrasonic beam that the matching layer of the inclined surface of novel ultrasonic wave transducer 25 generates is reflected by reflector plate 24, is transmitted to new
The vertical plane of type ultrasonic transducer 23 receives, and completes fair current sampling, you can obtain fair current time value.
Step 2) according to concurrent-countercurrent sampling gained time value, it can be obtained fluid flow rate with time difference method Computing Principle.
The description of the above examples is only intended to facilitate the understand of the core idea of the present invention;Meanwhile for the general of this field
Technical staff, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion
The content of the present specification should not be construed as limiting the invention.
Claims (5)
1. a kind of New Transit-time Ultrasonic Flowmeter, it is characterised in that be equipped with novel ultrasonic wave transducer, pipeline, reflector plate;
Novel ultrasonic wave transducer can work simultaneously as supersonic generator and ultrasonic receiver, it can be achieved that concurrent-countercurrent synchronize adopt
Sample.
2. a kind of New Transit-time Ultrasonic Flowmeter according to claim 1, it is characterised in that the new type ultrasonic
There are two matching layer, inclined matching layers to be received as ultrasonic wave as ultrasonic transmitter, vertical matching layer for energy converter tool
Device.
3. a kind of New Transit-time Ultrasonic Flowmeter according to claim 1, it is characterised in that the new type ultrasonic
The angle [alpha] of the inclined matching layer of energy converter is 45 °~50 °.
4. a kind of New Transit-time Ultrasonic Flowmeter, it is characterised in that novel ultrasonic wave transducer uses diagonal mounting means,
The propagation sound channel of one parallelogram sturcutre of composition corresponding with reflector plate installation, ultrasonic wave constitutes a parallelogram.
5. a kind of New Transit-time Ultrasonic Flowmeter according to claim 4, it is characterised in that the ultrasonic signal
Propagation sound channel can be parallelogram or diamond shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810285384.4A CN108692777A (en) | 2018-04-02 | 2018-04-02 | A kind of New Transit-time Ultrasonic Flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810285384.4A CN108692777A (en) | 2018-04-02 | 2018-04-02 | A kind of New Transit-time Ultrasonic Flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108692777A true CN108692777A (en) | 2018-10-23 |
Family
ID=63844739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810285384.4A Pending CN108692777A (en) | 2018-04-02 | 2018-04-02 | A kind of New Transit-time Ultrasonic Flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108692777A (en) |
-
2018
- 2018-04-02 CN CN201810285384.4A patent/CN108692777A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181023 |
|
| WD01 | Invention patent application deemed withdrawn after publication |