CN216283708U - Miniature vortex street flowmeter - Google Patents
Miniature vortex street flowmeter Download PDFInfo
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- CN216283708U CN216283708U CN202122970349.6U CN202122970349U CN216283708U CN 216283708 U CN216283708 U CN 216283708U CN 202122970349 U CN202122970349 U CN 202122970349U CN 216283708 U CN216283708 U CN 216283708U
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Abstract
The utility model discloses a micro vortex street flowmeter which is characterized by comprising a probe body and a flow guide pipe arranged in the probe body, wherein two ends of the flow guide pipe are connected to a fluid conveying pipeline, a vortex generating body is arranged in the flow guide pipe, a flow sensor is arranged on the probe body on the back flow surface side of the vortex generating body, and a vibration sensor is also arranged in the probe body; the micro vortex street flowmeter ensures that the micro medium flow of the medium flowing through the detection pipe can be accurately detected by changing or additionally arranging the structure and the components in the flowmeter.
Description
Technical Field
The utility model belongs to a miniature vortex shedding flowmeter, and particularly relates to a miniature vortex shedding flowmeter.
Background
In recent years, with the continuous development of economy, almost families have a car, which causes the gasoline consumption to increase rapidly. Because the gasoline has stronger volatility, a large amount of oil gas can be volatilized in the processes of refueling and gasoline storage of a gas station. The volatilized oil gas not only causes energy waste, but also has potential safety hazards of environmental pollution and easy explosion, and seriously threatens the production and life of people.
At present, oil gas recovery and transformation of oil storage depots of gas stations in most areas of China are finished as required, but the oil gas recovery and transformation are not executed as required in the actual application process, so that oil gas recovery equipment does not play the due role, and the influence of volatile oil gas on the environment is not solved. There is an urgent need for a device or means to monitor the oil gas recovery in real time to ensure the oil gas recovery is performed at all times.
In the prior art, the simplest and most effective means for monitoring whether oil gas recovery is carried out is to monitor whether oil gas passes through an oil gas recovery pipeline. However, in the prior art, the conventional flow meter vibrates during working due to the flow rate of the conventional flow meter, so that the monitoring precision is not high and inaccurate, and on the other hand, the flow rate is small during oil gas recovery, so that the flow rate is difficult to measure, and the monitoring and detection effects are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a micro vortex shedding flowmeter, which can ensure that the micro flow is accurately and reliably measured by changing or additionally arranging the structure and the components in the flowmeter, can realize flow monitoring in the oil gas recovery process, and supervises a gas station to carry out oil gas recovery processing according to requirements through flow data.
The utility model relates to a micro vortex street flowmeter, which comprises a probe body and a flow guide pipe arranged in the probe body, wherein two ends of the flow guide pipe are connected to a fluid conveying pipeline, a vortex generating body is arranged in the flow guide pipe, a flow sensor is arranged on the probe body on the back flow surface side of the vortex generating body, and a vibration sensor is also arranged in the probe body.
Preferably, the probe body comprises a cylindrical barrel body with a detachable barrel cover, the guide pipe is integrally formed in the cylindrical barrel body, two ends of the guide pipe extend out of the side face of the cylindrical barrel body, and connecting threads used for being connected with a fluid conveying pipeline are arranged on the guide pipe extending out of the probe body.
Preferably, be provided with the water conservancy diversion chamber in the honeycomb duct, the water conservancy diversion chamber include the cylinder chamber with connect respectively in two circular cone reducing chamber at cylinder chamber both ends, two circular cone reducing chamber respectively with fluid conveying pipeline direct intercommunication, swirl generator and flow sensor all are fixed in the cylinder chamber.
Preferably, the vortex generating body is a triangular prism and is integrally formed with the probe body.
Preferably, be provided with mounting bracket, signal converter and signal transmitter in the cylinder barrel, vibration sensor with flow sensor all can dismantle and be fixed in on the mounting bracket, flow sensor is by setting up on the cylinder barrel and inserting the cylinder chamber in the aperture at swirl generator rear portion, vibration sensor sets up on the mounting bracket and keeps away from the aperture, vibration sensor with flow sensor all with signal converter signal connection, signal transmitter with signal converter is connected and with signal transmission to the host computer.
The miniature vortex shedding flowmeter in the technical scheme of the utility model has the beneficial effects that:
1. the vibration sensor is arranged in the flowmeter, so that the vibration of the flowmeter during working is detected and measured, and the numerical value of the parameter of the vibration part is eliminated from the flow data detected by the flow sensor through calculation, so that the real oil-gas flow in the oil-gas recovery pipeline is obtained.
2. The flow sensor and the vibration sensor are arranged separately, so that the measurement error caused by water vapor and vibration is effectively avoided.
3. The design of cylinder chamber and circular cone undergauge chamber structure in the honeycomb duct has reduced the cross section in the cylinder chamber that the detection position oil gas flows through, realizes detecting the thin oil gas of retrieving, improves and detects precision and degree of accuracy.
Drawings
FIG. 1 is a schematic structural view of a micro vortex shedding flowmeter according to the technical solution of the present invention,
fig. 2 is a schematic view of the internal structure of a micro vortex shedding flowmeter according to the technical scheme of the utility model.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.
As shown in fig. 1 and 2, the micro vortex street flowmeter according to the technical solution of the present invention includes a probe body 1 and a flow guide tube 2 disposed in the probe body 1. Both ends of a flow guide pipe 2 are connected to a fluid conveying pipeline, a vortex generating body 3 is arranged in the flow guide pipe 2, and a flow sensor 8 is arranged on a probe body 1 on the back flow surface side of the vortex generating body 3. A vibration sensor 5 is also provided in the probe body 1.
Based on above-mentioned technical scheme, on inserting honeycomb duct 2 into oil gas recovery pipeline, the oil gas of retrieving is through honeycomb duct 2, by flow sensor 8 to, realizes the control management to oil gas recovery, ensures that filling station is unloading and all opens oil gas recovery device with the process of refueling, realizes retrieving volatile oil gas, avoids oil gas direct volatilizing to the air in, causes the pollution of the waste of oil gas and environment and the production of potential safety hazard.
In the technical scheme, based on the vortex street karman vortex principle, the design of double sensors (a flow sensor and a vibration sensor) is adopted, so that the measurement error caused by water vapor and vibration is effectively avoided. Through the vibration of the detecting head body measured by the vibration sensor, the vibration generation signal part is eliminated from the signal measured by the flow sensor, the measurement accuracy of the flow sensor is improved, and whether oil gas recovery is carried out in a gas station or not is judged by monitoring the flow of oil gas in the oil gas recovery pipe of the oil gas recovery pipe in the oil filling process.
In the technical scheme, the vibration sensor is arranged in the flowmeter, so that the vibration of the flowmeter during working is detected and measured, and the real oil-gas flow in the oil-gas recovery pipeline is obtained by eliminating the numerical value of the vibration part parameter in the flow data detected by the flow sensor through calculation.
As shown in figures 1 and 2, the probe body 1 includes a cylindrical barrel 12 with a removable barrel cover 11. The draft tube 2 is integrally formed in the cylindrical barrel 12, and two ends of the draft tube 2 extend out of the side surface of the cylindrical barrel 12. The honeycomb duct 2 extending out of the probe body 1 is provided with connecting threads for connecting with a fluid conveying pipeline.
Among the above-mentioned technical scheme, connecting thread's design, this miniature vortex flowmeter of being convenient for is connected and the installation with oil gas recovery pipeline. Honeycomb duct 2 and cylinder barrel 12 integrated into one piece, the effectual internal structure and the connection structure that have reduced this flowmeter have reduced the vibration, have especially avoided resonant production for the oil gas flow that flow sensor measured is more accurate.
As shown in fig. 1 and 2, a flow guide cavity is arranged in the flow guide pipe 2, and the flow guide cavity includes a cylindrical cavity 9 and two conical reducing cavities 10 respectively connected to two ends of the cylindrical cavity 9. The two conical reducing cavities 10 are respectively and directly communicated with a fluid conveying pipeline. The vortex generating body 3 and the flow sensor 4 are both fixed in the cylindrical cavity 9. The design of this technical scheme, setting up of circular cone reducing chamber 10 and cylinder chamber 9 has reduced the cross sectional area of the cylinder chamber 9 that the detection position oil gas flows through, realizes detecting the thin oil gas of retrieving, improves and detects precision and degree of accuracy, further reduces flowmeter's measurement lower limit.
As shown in fig. 1 and 2, the vortex generating body 3 is a triangular prism and is integrally formed with the probe head body 1. The design of the technical scheme effectively reduces the mutual movement and vibration of the triangular prism, the probe body 1 and the like, avoids resonance, reduces the integral vibration of the flowmeter, and improves the accuracy and precision of the measurement of the flow sensor. Vortex generating body 3 adopts three corner posts, does benefit to oil gas and forms stable swirl at three corner post rear portions, improves flow sensor and detects the precision.
As shown in fig. 1 and 2, a mounting frame 7, a signal converter 6 and a signal transmitter are arranged in the cylindrical barrel 12. The vibration sensor 5 and the flow sensor 8 can be detachably fixed on the mounting frame 7. The flow sensor 8 is inserted into the cylindrical cavity 9 through a small hole 8 arranged at the rear part of the vortex generating body 3 on the cylindrical barrel 12. Vibration sensor 5 sets up on mounting bracket 7 and keeps away from aperture 8, and during the installation, ensures that vibration sensor 5 and flow sensor 4 central point are on same vertical line, has guaranteed vibration signal's uniformity, guarantees that vibration sensor 5 and flow sensor 4 feel promptly are unanimous. The vibration sensor is fixed in the cylindrical barrel 12 and is far away from the cylindrical cavity 9, so that the sensitivity of the sensor is prevented from being influenced by the rising of oil gas during detection. Vibration sensor 5 and flow sensor 4 all with signal converter 6 signal connection, signal transmitter and signal converter 6 are connected and with signal transmission to the host computer, and the host computer keeps the flow change of monitoring, ensures that oil gas recovery equipment opens constantly, and is operating condition.
In the technical scheme, the probe body 1 and the flow sensor are both designed in a microminiature mode, so that the small-caliber installation environment of the oil-gas recovery pipeline on the gas station pipeline is met, and the measurement lower limit of the flowmeter is further reduced.
Technical solution of the utility model the present invention is described above with reference to the accompanying drawings by way of example, and it is to be understood that the specific implementation of the present invention is not limited to the above-described embodiments, and it is within the scope of the present invention to employ various insubstantial modifications of the method concept and technical solution of the present invention, or to directly apply the concept and technical solution of the present invention to other applications without modification.
Claims (5)
1. The miniature vortex shedding flowmeter is characterized by comprising a probe body and a flow guide pipe arranged in the probe body, wherein two ends of the flow guide pipe are connected to a fluid conveying pipeline, a vortex generating body is arranged in the flow guide pipe, a flow sensor is arranged on the probe body on the back flow surface side of the vortex generating body, and a vibration sensor is further arranged in the probe body.
2. The micro vortex shedding flowmeter of claim 1, wherein the probe body comprises a cylindrical body with a removable cover, the flow guide tube is integrally formed in the cylindrical body, two ends of the flow guide tube extend out from the side of the cylindrical body, and the flow guide tube extending out of the probe body is provided with a connecting thread for connecting with a fluid delivery pipe.
3. The micro vortex shedding flowmeter according to claim 2, wherein the flow guide tube is internally provided with a flow guide cavity, the flow guide cavity comprises a cylindrical cavity and two conical reducing cavities respectively connected to two ends of the cylindrical cavity, the two conical reducing cavities are respectively and directly communicated with the fluid conveying pipeline, and the vortex generator and the flow sensor are fixed in the cylindrical cavity.
4. The micro vortex shedding flowmeter of claim 1, wherein the vortex generator is a triangular prism and is integrally formed with the probe body.
5. The micro vortex shedding flowmeter according to claim 2, wherein a mounting frame, a signal converter and a signal emitter are arranged in the cylindrical barrel, the vibration sensor and the flow sensor are detachably fixed on the mounting frame, the flow sensor is inserted into the cylindrical cavity from a small hole arranged at the rear part of the vortex generating body on the cylindrical barrel, the vibration sensor is arranged on the mounting frame and far away from the small hole, the vibration sensor and the flow sensor are in signal connection with the signal converter, and the signal emitter is connected with the signal converter and emits signals to an upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122970349.6U CN216283708U (en) | 2021-11-30 | 2021-11-30 | Miniature vortex street flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122970349.6U CN216283708U (en) | 2021-11-30 | 2021-11-30 | Miniature vortex street flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216283708U true CN216283708U (en) | 2022-04-12 |
Family
ID=81040453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122970349.6U Active CN216283708U (en) | 2021-11-30 | 2021-11-30 | Miniature vortex street flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216283708U (en) |
-
2021
- 2021-11-30 CN CN202122970349.6U patent/CN216283708U/en active Active
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