CN209945431U - Anti-vibration vortex street flowmeter - Google Patents
Anti-vibration vortex street flowmeter Download PDFInfo
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- CN209945431U CN209945431U CN201921186722.5U CN201921186722U CN209945431U CN 209945431 U CN209945431 U CN 209945431U CN 201921186722 U CN201921186722 U CN 201921186722U CN 209945431 U CN209945431 U CN 209945431U
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Abstract
The utility model discloses an anti vibration vortex street flowmeter, including the flowmeter casing, vortex street signal generator, sensor, amplifier circuit, singlechip, LCD, lithium metal battery, support protection body, circuit board, watchcase and piezoelectric crystal, its characterized in that: the vortex street signal generator is characterized in that a flowmeter inlet is formed in one end of the flowmeter shell, the vortex street signal generator is fixedly connected with one end of the flowmeter shell, a round hole is formed in the upper side of the other end of the flowmeter shell, and a sensor is installed in the round hole of the flowmeter shell. The utility model relates to a flowmeter field, specifically say, relate to an antidetonation vortex street flowmeter. The utility model discloses a have simple structure, convenient production, the anti vibration is effectual, with low costs, long service life, easily industrial production, but wide application in various fluidic measurements.
Description
Technical Field
The utility model relates to a flowmeter field, specifically say, relate to an antidetonation vortex street flowmeter.
Background
The vortex shedding flowmeter is a flowmeter based on the fluid vibration principle to carry out measurement, the existing vortex shedding flowmeters are all that a vortex shedding signal generator and a sensor are arranged in parallel in the axial direction, the tail wing of the sensor (vibration signals of fluid are detected by the tail wing of the sensor and then transmitted to a piezoelectric crystal in the sensor, the stress surface of the piezoelectric crystal and the stress surface of the tail wing of the sensor are arranged in parallel in the flow direction of the fluid), the vortex shedding flowmeter with the arrangement structure is particularly sensitive to mechanical vibration (the mechanical vibration mainly refers to the radial vibration of a pipeline), the sensor can not only sense the vortex shedding force generated by the fluid, but also sense the pipeline vibration caused by the flushing of the pipeline by the fluid or other external reasons and directly transmit the vortex shedding force to the sensor, so that the tail wing of the sensor vibrates, the sensor can generate interference charges, thereby interfering the precision of the vortex shedding flowmeter, and the vortex shedding flowmeter can not work in serious, this is a disadvantage of the prior art.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an anti vibration vortex street flowmeter makes things convenient for the accurate measurement of vortex street signal.
The utility model discloses a following technical scheme realizes the utility model purpose:
the utility model provides an anti-vibration vortex street flowmeter, includes flowmeter casing (1), vortex street signal generator (2), sensor (3), amplifier circuit (6), singlechip (7), LCD (8), lithium metal battery (9), supports protector (10), circuit board (11), watchcase (12) and piezoelectric crystal (4), its characterized in that: the vortex street signal generator is characterized in that a flowmeter inlet (5) is arranged at one end of the flowmeter shell (1), one end of the flowmeter shell (1) is fixedly connected with the vortex street signal generator (2), a round hole (13) is formed in the upper side of the other end of the flowmeter shell (1), a sensor (3) is fixed in the round hole (13) of the flowmeter shell (1), and a piezoelectric crystal (4) is installed in the shell of the sensor (3).
As a further limitation of the technical solution, the vortex street signal generator (2) is horizontally installed in the flowmeter housing (1).
As a further limitation of the present technical solution, an incident flow surface of the vortex street signal generator (2) faces the flowmeter inlet (5).
As a further limitation of the present solution, the sensor (3) is arranged orthogonally to the vortex street signal generator (2) at 90 degrees behind it, the sensor (3) is mounted vertically in the flowmeter housing (1), and a tail plane of the sensor (3) faces the flowmeter inlet (5).
As a further limitation of the technical scheme, the force bearing surface of the piezoelectric crystal (4) is arranged in parallel with the force bearing surface of the sensor tail wing.
As a further limitation to the technical solution, the sensor (3) is disposed in a supporting protection body (10), the lower end of the supporting protection body (10) is fixedly connected to the flowmeter housing (1), the upper end of the supporting protection body (10) is fixedly connected to the meter housing (12), a circuit board (11) is disposed in the meter housing (12), one side of the liquid crystal display (8) is fixedly connected to the circuit board (11), the single chip microcomputer (7) is fixed on the circuit board (11), and the single chip microcomputer (7) is connected to the lithium metal battery (9).
As a further limitation to the technical solution, the piezoelectric crystal (4) is connected to the amplifying circuit (6), the amplifying circuit (6) is connected to the single chip microcomputer (7), and the single chip microcomputer (7) is connected to the liquid crystal display (8).
Compared with the prior art, the utility model discloses an advantage is with positive effect:
(1) since the vibration of the conduit of the flowmeter housing is primarily radial, the tail plane of the sensor
Towards the flowing direction of the fluid, the sensor only senses the vortex street signal vibration of the fluid and does not sense the radial direction of the pipeline
The vibration is influenced, so that the aim of resisting vibration is fulfilled;
(2) the utility model has the advantages of simple structure, convenient production, good anti-vibration effect, low cost and long service life
Long service life, easy industrial production and wide application in the measurement of various fluids.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of a partial three-dimensional structure of the present invention.
Fig. 3 is a first cross-sectional view of the present invention.
Fig. 4 is a second cross-sectional view of the present invention.
Fig. 5 is an electrical schematic diagram of the present invention.
In the figure: 1. the device comprises a flowmeter shell, 2, a vortex street signal generator, 3, a sensor, 4, a piezoelectric crystal, 5, a flowmeter inlet, 6, an amplifying circuit, 7, a single chip microcomputer, 8, a liquid crystal display, 9, a lithium metal battery, 10, a supporting protector, 11, a circuit board, 12, a meter shell, 13 and a round hole.
Detailed Description
In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.
As shown in fig. 1-5, the utility model discloses a flowmeter casing 1, vortex street signal generator 2, sensor 3, amplifier circuit 6, singlechip 7, LCD 8, lithium metal battery 9, support protection body 10, circuit board 11, watchcase 12 and piezoelectric crystal 4, flowmeter casing 1's one end is provided with flowmeter entry 5, one end fixed connection in flowmeter casing 1 vortex street signal generator 2, flowmeter casing 1's other end upside is provided with round hole 13, be fixed with sensor 3 in flowmeter casing 1's the round hole 13 install in sensor 3's the casing piezoelectric crystal 4.
The vortex street signal generator 2 is horizontally arranged in the flowmeter shell 1.
The upstream side of the vortex street signal generator 2 faces the flowmeter inlet 5.
The sensor 3 is arranged behind the vortex street signal generator 2 at 90 degrees and is orthogonal to the vortex street signal generator, the sensor 3 is vertically arranged in the flowmeter shell 1, and a tail plane of the sensor 3 faces the flowmeter inlet 5.
The stress surface of the piezoelectric crystal 4 is arranged in parallel with the stress surface of the sensor tail wing.
The sensor 3 is arranged in a supporting protection body 10, the lower end of the supporting protection body 10 is fixedly connected with the flowmeter shell 1, the upper end of the supporting protection body 10 is fixedly connected with the meter shell 12, a circuit board 11 is arranged in the meter shell 12, one side of the liquid crystal display 8 is fixedly connected with the circuit board 11, the singlechip 7 is fixed on the circuit board 11, and the singlechip 7 is connected with the lithium metal battery 9.
The piezoelectric crystal 4 is connected with the amplifying circuit 6, the amplifying circuit 6 is connected with the single chip microcomputer 7, and the single chip microcomputer 7 is connected with the liquid crystal display 8.
The pin 64 of the singlechip 7 is connected with the lithium metal battery 9, the pin 4 of the singlechip 7 is connected with the 1 pin output port of the TL062C amplification chip, and the pins 12 to 39, 44, 45, 48 to 55 of the singlechip 7 are connected with the liquid crystal display 8.
The piezoelectric crystal 4 is connected with the amplifying circuit 6, the amplifying circuit 6 comprises two capacitors C1, C2, two negative feedback resistors R1, R2 and TL062C amplifying chips, the piezoelectric crystal 4 is connected with one ends of the capacitors C1 and C2 through wires, the other ends of the capacitors C1 and C2 are respectively connected with the 2-pin reverse end and the 3-pin same-direction end of the TL062C amplifying chip, one end of the resistor R1 is connected with the 2-pin reverse end of the TL062C amplifying chip, the other end of the resistor R2 is connected with the ground, the other end of the resistor R2 is connected with the output port 1 pin of the TL062C amplifying chip, the output port 1 pin of the TL062C amplifying chip is connected with the pin 4 of the single chip microcomputer 7, and the single chip microcomputer 7 is connected with the liquid crystal display 8.
The utility model discloses a work flow does: the vortex street signal generator 2 is horizontally arranged in the flowmeter shell 1, the incident flow surface of the vortex street signal generator 2 faces the flowmeter inlet 5, the sensor 3 is orthogonally arranged at 90 degrees behind the vortex street signal generator 2 and is vertically arranged in the flowmeter shell 1, the tail plane of the sensor faces the flowmeter inlet 5, the piezoelectric crystal 4 is arranged in the sensor shell 3, the stress surface of the piezoelectric crystal 4 and the stress surface of the tail of the sensor are arranged in parallel, when fluid flows in from the flowmeter inlet 5 and passes through the vortex street signal generator 2, the fluid flow is affected to generate vortex separation, when the vortices are arranged in two rows to form stable and alternate vortex, the vortex number f of the vortices is in direct proportion to the fluid velocity V:
in the formula: f-vortex number V-fluid speed, d-vortex street signal generator incident flow width mm, Sr-Strouhal number (constant).
When the flow velocity of the fluid is fixed, because the vortex number f is in linear relation with the fluid velocity V, the vortex street signal is fixed, because the sensor 3 is arranged on the side surface of the vortex street signal generating body 2, the vortex street signal with half of the vibration frequency is detected on the sensor 3, the piezoelectric crystal 4 in the sensor 3 outputs a voltage signal with half of the vortex street signal frequency to the outside, the voltage signal generated by the piezoelectric crystal 4 is respectively connected into the amplifying circuit 6 through a lead, the voltage signal is amplified by the amplifying circuit 6 and then sent to the singlechip 7, the lithium metal battery 9 provides power for the singlechip 7, the related data calculated by the singlechip 7 is displayed on the liquid crystal display 8, because the vibration of the pipeline of the flowmeter shell 1 is mainly radial vibration, the plane of the tail wing of the sensor 3 faces the flow direction of the fluid, the sensor 3 only senses the vibration of the vortex street signal of the fluid and does not sense the radial vibration influence of the, thereby achieving the aim of vibration resistance. The utility model discloses a have simple structure, convenient production, the anti vibration is effectual, with low costs, long service life, easily industrial production, but wide application in various fluidic measurements.
The above disclosure is only one specific embodiment of the present invention, however, the present invention is not limited thereto, and any changes that can be considered by those skilled in the art should fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides an anti-vibration vortex street flowmeter, includes flowmeter casing (1), vortex street signal generator (2), sensor (3), amplifier circuit (6), singlechip (7), LCD (8), lithium metal battery (9), supports protector (10), circuit board (11), watchcase (12) and piezoelectric crystal (4), its characterized in that: the vortex street signal generator is characterized in that a flowmeter inlet (5) is arranged at one end of the flowmeter shell (1), one end of the flowmeter shell (1) is fixedly connected with the vortex street signal generator (2), a round hole (13) is formed in the upper side of the other end of the flowmeter shell (1), a sensor (3) is fixed in the round hole (13) of the flowmeter shell (1), and a piezoelectric crystal (4) is installed in the shell of the sensor (3).
2. The anti-vibration vortex shedding flowmeter according to claim 1, wherein: the vortex street signal generator (2) is horizontally arranged in the flowmeter shell (1).
3. The anti-vibration vortex shedding flowmeter according to claim 1, wherein: the upstream side of the vortex street signal generator (2) faces the inlet (5) of the flowmeter.
4. The anti-vibration vortex shedding flowmeter according to claim 1, wherein: the sensor (3) is arranged behind the vortex street signal generator (2) in an orthogonal mode of 90 degrees, the sensor (3) is vertically installed in the flowmeter shell (1), and a tail wing plane of the sensor (3) faces to the flowmeter inlet (5).
5. The anti-vibration vortex shedding flowmeter according to claim 1, wherein: and the stress surface of the piezoelectric crystal (4) is arranged in parallel with the stress surface of the sensor tail wing.
6. The anti-vibration vortex shedding flowmeter according to claim 1, wherein: the sensor (3) is arranged in a supporting protection body (10), the lower end of the supporting protection body (10) is fixedly connected with the flowmeter shell (1), the upper end of the supporting protection body (10) is fixedly connected with the watchcase (12), a circuit board (11) is arranged in the watchcase (12), one side of the liquid crystal display (8) is fixedly connected with the circuit board (11), the singlechip (7) is fixed on the circuit board (11), and the singlechip (7) is connected with the lithium metal battery (9).
7. The anti-vibration vortex shedding flowmeter according to claim 1, wherein: the piezoelectric crystal (4) is connected with the amplifying circuit (6), the amplifying circuit (6) is connected with the single chip microcomputer (7), and the single chip microcomputer (7) is connected with the liquid crystal display (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186722.5U CN209945431U (en) | 2019-07-26 | 2019-07-26 | Anti-vibration vortex street flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186722.5U CN209945431U (en) | 2019-07-26 | 2019-07-26 | Anti-vibration vortex street flowmeter |
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| Publication Number | Publication Date |
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| CN209945431U true CN209945431U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921186722.5U Active CN209945431U (en) | 2019-07-26 | 2019-07-26 | Anti-vibration vortex street flowmeter |
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| CN (1) | CN209945431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252122A (en) * | 2021-05-18 | 2021-08-13 | 山东科尔自动化仪表股份有限公司 | Charge flowmeter and flow metering method |
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2019
- 2019-07-26 CN CN201921186722.5U patent/CN209945431U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252122A (en) * | 2021-05-18 | 2021-08-13 | 山东科尔自动化仪表股份有限公司 | Charge flowmeter and flow metering method |
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