CN216559119U - Anti-interference double-probe of vortex shedding flowmeter - Google Patents
Anti-interference double-probe of vortex shedding flowmeter Download PDFInfo
- Publication number
- CN216559119U CN216559119U CN202123292976.5U CN202123292976U CN216559119U CN 216559119 U CN216559119 U CN 216559119U CN 202123292976 U CN202123292976 U CN 202123292976U CN 216559119 U CN216559119 U CN 216559119U
- Authority
- CN
- China
- Prior art keywords
- signal line
- piezoelectric
- probe shell
- probe
- piezoelectric sheet
- 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.)
- Active
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model provides an anti-interference double probe of a vortex flowmeter, which comprises an upper probe shell and a lower probe shell, wherein a binding post is arranged on the surface of the upper probe shell, a threading groove is formed in the bottom of the binding post, the binding post is communicated with the interiors of the upper probe shell and the lower probe shell through the threading groove, piezoelectric devices are arranged in the upper probe shell and the lower probe shell, each piezoelectric device comprises an upper piezoelectric sheet, a piezoelectric core column and a lower piezoelectric sheet, the upper piezoelectric sheet is arranged above the piezoelectric core column, the lower piezoelectric sheet is arranged below the piezoelectric core column, an upper balancing weight and the upper piezoelectric sheet are both positioned in the upper probe shell, the lower piezoelectric sheet is positioned in the lower probe shell, a common signal line, a noise pickup signal line and a flow signal line are respectively led out from the piezoelectric core column, the upper piezoelectric sheet and the lower piezoelectric sheet, the noise pickup signal line is led out from the bottom of the upper piezoelectric sheet, the public signal line, the noise pickup signal line and the flow signal line sequentially pass through the threading slot and extend to the outside of the binding post.
Description
Technical Field
The utility model relates to the technical field of vortex shedding flowmeter probes, in particular to an anti-interference double probe of a vortex shedding flowmeter.
Background
A vortex shedding flowmeter probe is disclosed in the utility model patent with the patent number of CN203745009U, which is characterized in that: "a piezoelectric device is arranged in a probe shell 11, the piezoelectric device is that a rectangular upper piezoelectric sheet 22b and a rectangular lower piezoelectric sheet 22c are arranged on a piezoelectric stem 22a at an interval of a shape of a string from top to bottom, and a balancing weight 33 is arranged at the top end or the bottom end of the piezoelectric stem 22 a; a common signal line 44a, a noise pickup signal line 44b and a flow signal line 44c are respectively led out from the piezoelectric stem 22a, the rectangular upper piezoelectric sheet 22b and the rectangular lower piezoelectric sheet 22 c; the rectangular piezoelectric plate is in a rectangular sheet shape, signals induced by a lower piezoelectric plate or a lower piezoelectric ring of a probe of the vortex flowmeter are a composite of a flow signal and a vibration signal, signals induced by a rectangular upper piezoelectric plate or an annular upper piezoelectric ring of the probe of the vortex flowmeter are only vibration signals, the vibration signals in the induced signals of the lower piezoelectric plate or the lower piezoelectric ring can be filtered out through analyzing the signal frequency of the rectangular upper piezoelectric plate or the annular upper piezoelectric plate, so that the flow signal is obtained, and finally the flow value can be calculated, but the patent has the defects that a noise pickup signal wire led out from the upper piezoelectric plate is directly led out from the top of an upper-layer probe shell, and the noise pickup signal wire has certain mass and can generate interference on the vibration signals induced by the upper piezoelectric plate, so that the signals output from the noise pickup signal wire are not pure vibration signals, resulting in the final calculated flow value not being an accurate flow value.
SUMMERY OF THE UTILITY MODEL
In order to make up for the defects, the utility model provides an anti-interference double probe of a vortex shedding flowmeter, and aims to solve the problem that in the prior art, the mass of a noise pickup signal line can generate interference on a vibration signal induced by an upper piezoelectric plate, so that an accurate flow value cannot be obtained.
The utility model provides an anti-interference twin probe of vortex flowmeter, includes probe shell and lower probe shell, the surface of going up probe shell is provided with the terminal, the threading groove has been seted up to the bottom of terminal, the terminal passes through the threading groove with go up probe shell with the inside intercommunication of lower probe shell, go up probe shell with the inside of lower probe shell is provided with the piezoelectric device.
In one embodiment of the present invention, the piezoelectric device includes an upper piezoelectric sheet, a piezoelectric stem, and a lower piezoelectric sheet, the upper piezoelectric sheet is arranged above the piezoelectric stem, the lower piezoelectric sheet is arranged below the piezoelectric stem, a balancing weight is arranged right above the upper piezoelectric patch, the balancing weight and the upper piezoelectric patch are both positioned in the upper probe shell, the lower piezoelectric sheet is positioned in the lower probe shell, a common signal line, a noise pickup signal line and a flow signal line are respectively led out of the piezoelectric core column, the upper piezoelectric sheet and the lower piezoelectric sheet, the noise pickup signal line is led out from the bottom of the upper piezoelectric piece, and the public signal line, the noise pickup signal line and the flow signal line sequentially pass through the threading groove and the wiring terminal and extend to the outside of the wiring terminal.
In an embodiment of the present invention, the cross-sectional shape of the threading groove is L-shaped.
In one embodiment of the utility model, the plane of the top of the binding post is higher than the plane of the top of the upper probe shell.
In an embodiment of the present invention, a wiring hole through which the public signal line, the noise pickup signal line, and the flow signal line can pass is formed at the top of the wiring terminal.
In one embodiment of the utility model, the bottom of the upper probe shell and the surface of the lower probe shell are welded.
In one embodiment of the utility model, the top of the upper probe shell is integrally provided with a sealing cover body.
In one embodiment of the present invention, the upper piezoelectric sheet and the lower piezoelectric sheet are both long strips.
The utility model has the beneficial effects that: according to the anti-interference double probe of the vortex flowmeter, the noise pickup signal line is led out from the bottom of the upper piezoelectric plate, passes through the threading groove and the binding post and extends to the outside of the binding post, so that the interference of the mass of the noise pickup signal line on the vibration signal induced by the upper piezoelectric plate can be effectively avoided, the signal output from the noise pickup signal line is only the vibration signal, the vibration signal in the induced signal of the lower piezoelectric plate can be filtered through the analysis of the signal frequency of the upper piezoelectric plate, a pure flow signal can be obtained, and an accurate flow value can be obtained through calculation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an anti-interference dual probe of a vortex shedding flowmeter according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of an anti-interference dual probe of a vortex shedding flowmeter according to an embodiment of the present invention.
In the figure: 1-upper probe shell; 2-lower probe shell; 3-a binding post; 4-a threading groove; 5-a balancing weight; 6-upper piezoelectric sheet; 6 a-noise pickup signal line; 7-piezoelectric core column; 7 a-public signal line; 8-lower piezoelectric plate; 8 a-flow signal line.
Detailed Description
The following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Examples
Referring to fig. 1-2, the present invention provides a technical solution: an anti-interference double probe of a vortex flowmeter comprises an upper probe shell 1 and a lower probe shell 2, wherein the bottom of the upper probe shell 1 is welded with the surface of the lower probe shell 2, and the top of the upper probe shell in the prior art is provided with an opening, and different from the top of the upper probe shell in the prior art, because a signal line does not pass through the top of the upper probe shell 1, the top of the upper probe shell 1 provided by the utility model is integrally provided with a sealing cover body, the surface of the upper probe shell 1 is provided with a wiring terminal 3, the plane where the top of the wiring terminal 3 is located is higher than the plane where the top of the upper probe shell 1 is located, the bottom of the wiring terminal 3 is provided with a wiring groove 4, the wiring terminal 3 is communicated with the interiors of the upper probe shell 1 and the lower probe shell 2 through the wiring groove 4, and piezoelectric devices are arranged in the upper probe shell 1 and the lower probe shell 2.
Specifically, as shown in fig. 2, the interiors of the upper probe shell 1 and the lower probe shell 2 are communicated with each other, the threading groove 4 is used for communicating the terminal 3 with the interiors of the upper probe shell 1 and the lower probe shell 2, the terminal 3 is used for allowing the common signal line 7a, the noise pickup signal line 6a and the flow rate signal line 8a to pass through, and meanwhile, the common signal line 7a, the noise pickup signal line 6a and the flow rate signal line 8a can be protected inside the terminal 3.
In this embodiment, the piezoelectric device includes an upper piezoelectric sheet 6, a piezoelectric stem 7 and a lower piezoelectric sheet 8, the upper piezoelectric sheet 6 is disposed above the piezoelectric stem 7, the lower piezoelectric sheet 8 is disposed below the piezoelectric stem 7, a weight 5 is disposed directly above the upper piezoelectric sheet 6, the weight 5 and the upper piezoelectric sheet 6 are both located inside the upper probe shell 1, the lower piezoelectric sheet 8 is located inside the lower probe shell 2, the piezoelectric stem 7, the upper piezoelectric sheet 6 and the lower piezoelectric sheet 8 respectively draw out a common signal line 7a, a noise pickup signal line 6a and a flow signal line 8a, wherein the noise pickup signal line 6a is drawn out from the bottom of the upper piezoelectric sheet 6, and the common signal line 7a, the noise pickup signal line 6a and the flow signal line 8a all sequentially pass through the threading slot 4 and the terminal 3 and extend to the outside of the terminal 3.
Specifically, as shown in fig. 2, the signal induced by the lower piezoelectric plate 8 is a composite of a flow signal and a vibration signal, the signal induced by the upper piezoelectric plate 6 is only a vibration signal, a noise pickup signal line is led out from the bottom of the upper piezoelectric plate 6, and extends to the outside of the terminal 3 through the threading slot 4 and the terminal 3, so that the interference of the mass of the noise pickup signal line 6a on the vibration signal induced by the upper piezoelectric plate 6 can be effectively avoided, the signal output from the noise pickup signal line 6a is only a vibration signal, and the vibration signal induced by the lower piezoelectric plate 8 can be filtered by analyzing the signal frequency of the upper piezoelectric plate 6, so that a pure flow signal is obtained, an accurate flow value is obtained by calculation, the anti-interference capability of the present invention is improved, and the sensitivity of the present invention is improved.
In this embodiment, the threading groove 4 has an L-shaped cross section.
Specifically, as shown in fig. 2, in practical application, in order to facilitate the connection between the upper probe shell 1 and the lower probe shell 2, the end of the upper probe shell 1 connected to the lower probe shell 2 is cylindrical, and since the wiring terminal 3 is located on one side of the upper probe shell 1 deviating from the center of circle, the threading groove 4 with the L-shaped cross section is used for adapting to the communication between the wiring terminal 3 and the inside of the upper probe shell 1 and the inside of the lower probe shell 2.
In this embodiment, the top of the terminal 3 is opened with a wiring hole for passing the common signal line 7a, the noise pickup signal line 6a and the flow signal line 8 a.
Specifically, as shown in fig. 1-2, the public signal line 7a, the noise pickup signal line 6a and the flow signal line 8a penetrate through the wiring holes to the outside of the terminal 3, so as to realize connection with other devices.
Specifically, this vortex flowmeter anti-interference twin probe's theory of operation: when the device is used, the device is placed in a pipeline, the lower part of the double probe of the vortex flowmeter is deformed by vortex signals generated by fluid gas, vapor and liquid in the pipeline through a vortex generating body, so that a strong signal is induced on the lower piezoelectric plate 8, the frequency of the signal is in direct proportion to flow, the vibration signal enables the upper piezoelectric plate 6 and the lower piezoelectric plate 8 in the double probe of the vortex flowmeter to induce a strong signal, the frequency of the signal is in direct proportion to the frequency of the vibration signal, therefore, the signal induced by the lower piezoelectric plate 8 in the double probe of the vortex flowmeter is a complex of the flow signal and the vibration signal, the signal induced by the upper piezoelectric plate 6 is only the vibration signal, a noise pickup signal line is led out from the bottom of the upper piezoelectric plate 6, passes through the groove 4 and the terminal 3 and extends to the outside of the terminal 3, and the interference of the mass of the noise pickup signal line 6a on the vibration signal induced by the upper piezoelectric plate 6 can be effectively avoided, the signal output from the noise pickup signal line 6a is only a vibration signal, and the vibration signal in the induced signal of the lower piezoelectric plate 8 can be filtered through analyzing the signal frequency of the upper piezoelectric plate 6, so that a pure flow signal is obtained, and an accurate flow value is calculated.
It should be noted that the specific model specifications of the upper piezoelectric sheet 6, the piezoelectric stem 7, and the lower piezoelectric sheet 8 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art, so detailed description is omitted.
The power supply of the upper piezoelectric sheet 6, the piezoelectric stem 7 and the lower piezoelectric sheet 8 and the principle thereof will be clear to those skilled in the art and will not be described in detail herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an anti-interference dual probe of vortex flowmeter, includes probe shell (1) and lower probe shell (2), its characterized in that: the surface of going up probe shell (1) is provided with terminal (3), threading groove (4) have been seted up to the bottom of terminal (3), terminal (3) pass through threading groove (4) with go up probe shell (1) with the inside intercommunication of probe shell (2) down, go up probe shell (1) with the inside of probe shell (2) is provided with piezoelectric device down.
2. The anti-interference dual probe of the vortex shedding flowmeter according to claim 1, wherein: the piezoelectric device comprises an upper piezoelectric sheet (6), a piezoelectric core column (7) and a lower piezoelectric sheet (8), wherein the upper piezoelectric sheet (6) is arranged above the piezoelectric core column (7), the lower piezoelectric sheet (8) is arranged below the piezoelectric core column (7), a balancing weight (5) is arranged right above the upper piezoelectric sheet (6), the balancing weight (5) and the upper piezoelectric sheet (6) are both positioned inside the upper probe shell (1), the lower piezoelectric sheet (8) is positioned inside the lower probe shell (2), a common signal line (7a), a noise pickup signal line (6a) and a flow signal line (8a) are respectively led out from the piezoelectric core column (7), the upper piezoelectric sheet (6) and the lower piezoelectric sheet (8), wherein the noise pickup signal line (6a) is led out from the bottom of the upper piezoelectric sheet (6), the public signal line (7a), the noise pickup signal line (6a) and the flow signal line (8a) sequentially pass through the threading groove (4) and the wiring terminal (3) and extend to the outside of the wiring terminal (3).
3. The anti-interference dual probe of the vortex shedding flowmeter according to claim 1, wherein: the cross section of the threading groove (4) is L-shaped.
4. The anti-interference dual probe of the vortex shedding flowmeter according to claim 1, wherein: the plane where the top of the wiring terminal (3) is located is higher than the plane where the top of the upper probe shell (1) is located.
5. The anti-interference dual probe of the vortex shedding flowmeter according to claim 2, wherein: and the top of the binding post (3) is provided with a wiring hole for the public signal line (7a), the noise pickup signal line (6a) and the flow signal line (8a) to pass through.
6. The anti-interference dual probe of the vortex shedding flowmeter according to claim 1, wherein: the bottom of the upper probe shell (1) is welded with the surface of the lower probe shell (2).
7. The anti-interference dual probe of the vortex shedding flowmeter according to claim 1, wherein: the top of the upper probe shell (1) is integrally provided with a sealing cover body.
8. The anti-interference dual probe of the vortex shedding flowmeter according to claim 2, wherein: the upper piezoelectric sheet (6) and the lower piezoelectric sheet (8) are both long.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123292976.5U CN216559119U (en) | 2021-12-25 | 2021-12-25 | Anti-interference double-probe of vortex shedding flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123292976.5U CN216559119U (en) | 2021-12-25 | 2021-12-25 | Anti-interference double-probe of vortex shedding flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216559119U true CN216559119U (en) | 2022-05-17 |
Family
ID=81557093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123292976.5U Active CN216559119U (en) | 2021-12-25 | 2021-12-25 | Anti-interference double-probe of vortex shedding flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216559119U (en) |
-
2021
- 2021-12-25 CN CN202123292976.5U patent/CN216559119U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216559119U (en) | Anti-interference double-probe of vortex shedding flowmeter | |
| CN105178936A (en) | Method and device for realizing online measurement for single-well water content of crude oil in oil well by virtue of gas-liquid separation | |
| CN108151813A (en) | Valve control ultrasonic water meter based on NB-IOT | |
| CN104895611A (en) | Intelligent sensor used for mine dust concentration measurement | |
| CN205047208U (en) | Utilize gas -liquid separation to realize moisture on - line measuring device of oil well individual well crude oil | |
| CN106199687A (en) | Simple component geophone | |
| CN208568215U (en) | A kind of tunnel intelligent detection device mounting structure | |
| CN208860407U (en) | A kind of high temperature cutting type vortex street flow sensor | |
| CN218724397U (en) | Flow channel assembly of correlation type ultrasonic gas meter, gas meter assembly and ultrasonic gas meter | |
| CN106197577A (en) | Wireless and passive flow transducer based on MEMS technology | |
| CN206339568U (en) | Acoustic Doppler velocimetry | |
| CN216433142U (en) | Portable flow monitoring device | |
| CN206594317U (en) | Hydrophone sensitivity detector and its sound pressure signal collecting mechanism | |
| CN214538067U (en) | Vortex street flowmeter | |
| CN114710398A (en) | Abnormal accident alarm device for information system | |
| CN204694303U (en) | Electromagnetic flowmeter | |
| CN109946347B (en) | Land surface wellhead oil-gas-water three-phase water content measuring device | |
| CN211717528U (en) | Built-in oblique reflection multichannel ultrasonic flow measurement module and flowmeter | |
| CN209639794U (en) | A kind of water conservancy ship lock water-head monitoring system | |
| CN203880406U (en) | Internally-arranged infrasonic wave sensor of pipeline | |
| CN112666045A (en) | System device and method for online continuous measurement of pH value and density | |
| CN207181560U (en) | Transformer acoustic wave sensing system | |
| CN212622542U (en) | Water quality data monitoring sensing device | |
| CN208223714U (en) | A kind of oil field pressure transmitter | |
| CN207457028U (en) | The specimen cup that a kind of cellanalyzer uses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |