CN206269861U - A kind of shock type vortex street flowmeter sensor - Google Patents
A kind of shock type vortex street flowmeter sensor Download PDFInfo
- Publication number
- CN206269861U CN206269861U CN201621158812.XU CN201621158812U CN206269861U CN 206269861 U CN206269861 U CN 206269861U CN 201621158812 U CN201621158812 U CN 201621158812U CN 206269861 U CN206269861 U CN 206269861U
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- probe
- installation cavity
- holding wire
- string holes
- vortex
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Abstract
The utility model discloses a kind of shock type vortex street flowmeter sensor, including symmetrical fixed upper probe and lower probe；Installation cavity is provided with the middle of upper probe, upper probe one end is provided with the first string holes with upper installation cavity body phase insertion, and the upper probe other end is provided with the second string holes, piezoelectric transducer is provided with upper installation cavity, upper piezoelectric transducer is connected with holding wire, and upper holding wire passes through the first string holes；Lower installation cavity is provided with the middle of lower probe, is provided with lower installation cavity and is pushed electric transducer, pushed electric transducer and be connected with lower holding wire, lower holding wire passes through the second string holes.The utility model can pick up vibration and noise signal using the Quality Design such as symmetrical, and can distinguish vortex signal, solve existing vortex-shedding meter poor anti jamming capability, sensitivity problem not high；Can not only guarantee to detect the noise signals such as vibration well, can also well overcome the influence of the performance in high humidity environment to sensor.
Description
Technical field
The utility model belongs to vortex-shedding meter field, more particularly to one kind can respectively detect vortex signal and vibration signal
A kind of shock type vortex street flowmeter sensor.
Background technology
Vortex-shedding meter is based on " Karman vortex street " principle, and whirlpool is alternately produced in eddy generator both sides, under generating body
Trip forms vortex street.
The frequency f that vortex is separate is directly proportional to post effluent speed v, is inversely proportional with cylinder width d：
F=St × v/d
V=f × d/St
In formula：St-Strouhal number, is the dimensionless constant relevant with post section geometric, and numerical value is true by experiment
It is fixed.Because d and St are constants, and flow velocity v and mean flow rate v0 in pipe has fixed relationship (v0=v/ (1-1.25d/D)), measures
Vortex shedding frequency f just measures mean flow rate v0 in pipe, so as to measure volume flow.
Vortex-shedding meter above detects the whirlpool that flow of fluid is produced, wherein the frequency direct ratio of whirlpool by piezoelectric probe
In the flow of fluid.Because measuring environment residing for vortex street probe is different, can be influenceed by various interference signals, such as pipeline shakes
Dynamic, surrounding electromagnetic interference etc., sensor sensitivity is higher, and the interference signal for receiving is stronger.And traditional vortex-shedding meter piezoelectricity
The signal that probe is detected is vortex signal and the mixture of vibration signal, and None- identified goes out interference signal and vortex street from signal
Signal, so that accurate measurement cannot be accomplished,
Although having proposed the various technological means for recognizing interference signal and vortex signal, existing technological means
Or be all difficult to realize, or it is incompatible with system.Due to inevitably having vibration interference in vortex-shedding meter installation environment,
Cause measuring error, therefore can't well solve live vibration interference, greatly affected vortex-shedding meter it is extensive,
Wide apaptability is used.Therefore project mainly studies the antivibration method of vortex street probe, intends using four-wire system technology, to solve vortex street stream
The antivibration problem of gauge.
Utility model content
The purpose of this utility model is the problem above for overcoming prior art to exist, there is provided a kind of shock type flux of vortex street
Flowmeter sensor, using the Quality Design such as symmetrical, can pick up vibration and noise signal, and can distinguish vortex signal, solve
Certainly existing vortex-shedding meter poor anti jamming capability, sensitivity problem not high, while by using special encapsulation technology, making
The water proofing property of product is relatively reliable.
To realize above-mentioned technical purpose, above-mentioned technique effect is reached, the utility model is achieved through the following technical solutions：
A kind of shock type vortex street flowmeter sensor, including symmetrical fixed upper probe and lower probe；
Installation cavity is provided with the middle of the upper probe, described upper probe one end is provided with upper installation cavity body phase insertion
One string holes, the upper probe other end is provided with the second string holes, is provided with piezoelectric transducer in the upper installation cavity, it is described on
Piezoelectric transducer is connected with holding wire, and the upper holding wire passes through the first string holes；
Lower installation cavity is provided with the middle of the lower probe, is provided with the lower installation cavity and is pushed electric transducer, it is described
Push electric transducer and be connected with lower holding wire, the lower holding wire passes through the second string holes.
Further, the upper probe and lower probe are identical in quality, can effectively screen vibration signal and vortex signal.
Further, humidity can be both prevented using being weldingly connected between the upper probe and lower probe, again can be conveniently
Install.
The beneficial effects of the utility model are：
The utility model can pick up vibration and noise signal, and can distinguish whirlpool using the Quality Design such as symmetrical
Street signal, solves existing vortex-shedding meter poor anti jamming capability, sensitivity problem not high, while by using special envelope
Dress technology, makes the water proofing property of product relatively reliable；Can not only guarantee to detect the noise signals such as vibration well, may be used also
To overcome the influence of the performance in high humidity environment to sensor well.
Brief description of the drawings
Accompanying drawing described herein is used for providing being further understood to of the present utility model, constitutes the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not constitute to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is structure sectional view of the present utility model；
Label declaration in figure：Cavity, the string holes of 4- first, the string holes of 5- second, 6- are installed under probe, 2- on 1- on probe, 3-
Cavity, 9- are installed under the upper piezoelectric transducer of upper holding wire, 7-, 8- to push electric transducer, 10- and push electric transducer.
Specific embodiment
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of shock type vortex street flowmeter sensor as shown in Figure 1, including symmetrical fixed upper probe 1 and lower probe 2,
Upper probe 1 and lower probe 2 are identical in quality, vibration signal and vortex signal can be effectively screened, between upper probe 1 and lower probe 2
Using being weldingly connected, humidity can be both prevented, can conveniently installed again；
Installation cavity 3 is provided with the middle of upper probe 1,1 one end of upper probe is provided with the First Line connected with upper installation cavity 3
Hole 4,1 other end of upper probe is provided with the second string holes 5, and piezoelectric transducer 7, upper piezoelectric transducer 7 are provided with upper installation cavity 3
Holding wire 6 is connected with, upper holding wire 6 passes through the first string holes 4；
Lower installation cavity 8 is provided with the middle of lower probe 2, is provided with lower installation cavity 8 and is pushed electric transducer 9, push fax
Sensor 9 is connected with lower holding wire 10, and lower holding wire 10 passes through the second string holes 5.
Wherein, upper probe is to use pickup noise signal, and lower probe is used to pick up flow signal, the noise letter of upper probe pickup
Number it is mainly used for the noise signals such as pickup extraneous vibration, thus can be very good making an uproar in the flow model for distinguish lower probe
Acoustical signal, and rejected, so as to reach the effect of antivibration.
The utility model can pick up vibration and noise signal, and can distinguish whirlpool using the Quality Design such as symmetrical
Street signal, solves existing vortex-shedding meter poor anti jamming capability, sensitivity problem not high, while by using special envelope
Dress technology, makes the water proofing property of product relatively reliable；Can not only guarantee to detect the noise signals such as vibration well, may be used also
To overcome the influence of the performance in high humidity environment to sensor well.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.
Claims (3)
1. a kind of shock type vortex street flowmeter sensor, it is characterised in that：Including symmetrical fixed upper probe (1) and lower probe
(2)；
Installation cavity (3) is provided with the middle of the upper probe (1), described upper probe (1) one end is provided with and upper installation cavity (3) phase
First string holes (4) of insertion, upper probe (1) other end is provided with the second string holes (5), is installed in upper installation cavity (3)
There is a upper piezoelectric transducer (7), the upper piezoelectric transducer (7) is connected with holding wire (6), the upper holding wire (6) is through
One string holes (4)；
Lower installation cavity (8) is provided with the middle of the lower probe (2), is provided with lower installation cavity (8) and is pushed electric transducer
(9), the electric transducer (9) that pushes is connected with lower holding wire (10), and the lower holding wire (10) is through the second string holes (5).
2. a kind of shock type vortex street flowmeter sensor according to claim 1, it is characterised in that：The upper probe (1)
It is identical in quality with lower probe (2).
3. a kind of shock type vortex street flowmeter sensor according to claim 1, it is characterised in that：The upper probe (1)
Used and lower probe (2) between and be weldingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158812.XU CN206269861U (en) | 2016-10-25 | 2016-10-25 | A kind of shock type vortex street flowmeter sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158812.XU CN206269861U (en) | 2016-10-25 | 2016-10-25 | A kind of shock type vortex street flowmeter sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206269861U true CN206269861U (en) | 2017-06-20 |
Family
ID=59038379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621158812.XU Expired - Fee Related CN206269861U (en) | 2016-10-25 | 2016-10-25 | A kind of shock type vortex street flowmeter sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206269861U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990856A (en) * | 2018-01-03 | 2019-07-09 | 成都瑞帆智达科技有限公司 | Lead fixing structure, resonant transducer and measuring device |
| CN112378498A (en) * | 2020-10-19 | 2021-02-19 | 姚宁 | Anti-seismic high-sensitivity induction detection sensor measuring device |
-
2016
- 2016-10-25 CN CN201621158812.XU patent/CN206269861U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990856A (en) * | 2018-01-03 | 2019-07-09 | 成都瑞帆智达科技有限公司 | Lead fixing structure, resonant transducer and measuring device |
| CN112378498A (en) * | 2020-10-19 | 2021-02-19 | 姚宁 | Anti-seismic high-sensitivity induction detection sensor measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20201025 |