What are the brands of precession vortex gas flowmeters?

Speaking of domestic production, as far as the current domestic technology is concerned, the precession vortex gas flowmeter is very mature, and in some enterprises, there are piles of patents, which is not an exaggeration.

When selecting the model, it is necessary to know whether the enterprise has production qualifications, many of which are OEM, which will affect the follow-up technical support.

The second is whether there is a relevant honor, which is also a positive recognition of the product.

Hello, the United States imported precession vortex gas flowmeter brand manufacturer - Keen Ke KNKE is very happy with your question.

1. The precession vortex flowmeter has built-in pressure, temperature and flow sensors, with high safety performance, compact structure and beautiful appearance.

2. Display temperature, pressure, instantaneous flow and cumulative flow on the spot.

3. The precession vortex flowmeter adopts a new signal processing amplifier and the best filtering technology, which effectively eliminates the interference signals caused by pressure fluctuations and pipeline vibrations, greatly improves the resistance of the flowmeter, and makes the small flow rate have excellent stability.

4. The unique time display and real-time data storage functions can ensure that the internal data will not be lost and can be saved without any circumstances.

The above is the United States imported precession vortex gas flowmeter manufacturer - Kornko KNKE, on this issue. If you have the purchase needs of precession vortex gas flowmeter, please go to the official website of KNKE to select and purchase, or ask KNKE professional and technical personnel to find the most suitable product for you.

Your type source is goodThe United States imported gas turbine flowmeter manufacturer - Kornke KNKEGlad for your question.

Kornco gas turbine flowmeter.

2.High accuracy: the full scale is generally 1, and the high-precision type is; It is one of the most accurate ones.

3.Compact structure, light size, easy to install and use, large circulation capacity.

4.Good repeatability: generally reachable, because it has good repeatability, through frequent calibration or calibration can achieve the highest accuracy, so it is one of the preferred flowmeters in the first settlement.

5.Wide range: medium and large diameters can generally reach more than 20:1, small diameters are 10:1, and the starting flow is also low.

6.Using a variety of display methods, it can only be equipped with a mechanical counter or only an ordinary flow totalizer, or a temperature and pressure compensator can be added to the mechanical counter, or only a temperature and pressure compensator can be used, and it can be powered by lithium batteries for a long time, which is easy to use.

7.Due to the general use of pulse frequency signal output, it is suitable for total measurement and computer connection, no zero drift, and strong resistance. At the same time, if the high-frequency signal output is used, a high frequency signal (3-4kHz) can be obtained, and the signal resolution is strong.

The above is the United States imported gas turbine flowmeter manufacturer - Kornko KNKE, on this issue. If you have the purchase needs of gas turbine flowmeter, welcome to the official website of KNKE in the United States for selection and procurement, or ask the professional and skilled old rental staff of KNKE to find the most suitable product for you.

Gas turbine flowmeter, a combination of gas mechanics, fluid mechanics, electromagnetism and other theories and self-developed set of temperature, pressure, flow sensor and intelligent flow totalizer guessing banquet in one of the new Suixing silver belt limb generation of high-precision, high-reliability gas accurate metering instrument, with good low pressure and high pressure metering performance, a variety of signal output modes and low sensitivity to fluid disturbance, widely used in natural gas, coal-to-gas, liquefied gas, light hydrocarbon gas and other gases metering. The easy-to-use manufacturer brand brands of flowmeters mainly include Vton of the United States, E H flowmeters of Germany, Krohne of Germany, and Yokogawa of Japan.

What precession vortex flowmeters have in common with vortex flowmeters

Both types of flowmeters belong to the type of velocity flow meters;

Both kinds of flow meters can be made into an integrated type of temperature and pressure compensation, and can measure various gases, such as compressed air, oxygen, biogas, natural gas, coal gas, etc.;

Both types of flowmeters have no mechanical moving parts, which are not easy to corrode, stable and reliable, have a long service life, and do not require special maintenance for long-term operation;

The highest accuracy can be achieved with both flow meters.

The difference between a precession vortex flowmeter and a vortex flowmeter:

The two types of flow meters work differently;

The smart precession vortex flowmeter can only measure gases, while the smart vortex flowmeter can also measure liquids and vapors;

The maximum caliber of the intelligent precession vortex flowmeter can only reach 200 calibers, while the maximum caliber of the intelligent vortex flowmeter can be 1000 calibers, of which 300-1000 is plug-in;

The cost performance of the intelligent precession vortex flowmeter is a little higher than that of the intelligent vortex flowmeter;

The difference between vortex flowmeter and vortex flowmeter is mainly in terms of definition.

Vortex flowmeter: It is researched and produced according to the Karman vortex principle, and is mainly used for the flow measurement of industrial pipeline medium fluids, such as gas, liquid, vapor and other media. It is characterized by small pressure loss, large measuring range, high accuracy, and is almost not affected by fluid density, pressure, temperature, viscosity and other parameters when measuring the volume flow under working conditions.

Vortex flowmeter: The vortex flowmeter adopts the latest microprocessing technology, which has the advantages of strong function, wide flow range, simple operation and maintenance, easy installation and use, etc., and the main technical indicators have reached the advanced level of similar foreign products. It is widely used in petroleum, chemical, electric power, metallurgy, coal and other industries.

I know that there is an answer in the search.

When the fluid passes through a vortex generator consisting of spiral blades (see Figure 1), the fluid is forced to rotate violently around the axis of the generator, forming a vortex. When the fluid enters the diffusion section, the vortex current is affected by the reflux and begins to rotate twice, forming a gyro-like vortex precession phenomenon. This precession frequency is proportional to the flow rate and is not affected by the physical properties and density of the fluid.

The detection element measures the precession frequency of the secondary rotation of the fluid, and the flow rate is known. It also provides good linearity over a wide flow range. The flow rate is calculated as follows:

k=f q: k - flow meter coefficient l m

f – vortex frequency hz

q – volume flow rate m s

The instrumentation coefficient of the flowmeter is independent of the temperature, pressure, composition and physical properties (density, viscosity) of the fluid within certain structural parameters and the specified Reynolds number range.

Main features: 1 Built-in pressure, temperature and flow sensor, high safety performance, compact structure and beautiful appearance.

2. Display temperature, pressure, instantaneous flow and cumulative flow on the spot.

3. Using a new type of signal processing amplifier and unique filtering technology, it effectively eliminates the interference signal caused by pressure fluctuation and pipeline vibration, greatly improves the anti-interference ability of the flowmeter, and makes the small flow rate have excellent stability.

4. The unique time display and real-time data storage functions can ensure that the internal data will not be lost and can be stored permanently.

5. The power consumption of the whole machine is very low, and it can be operated with long-term power supply of the internal battery, which is an ideal local display instrument without external power supply.

6. The anti-theft function is reliable, with password protection, to prevent parameter change.

7. The meter head can be rotated 180 degrees at will, which is easy to install.

When the fluid flow sensor along the axial direction is fed, under the action of the vortex generator, it is forced to rotate around the center line, generating a vortex current, which is swirled in the venturi tube, and after reaching the contraction section and suddenly throttling, the vortex is accelerated, and when passing through the diffusion section, the center of the vortex is precession along a conical spiral. At this point, the precession frequency of the vortex center passing through the detection point is proportional to the flow velocity of the fluid. The precession frequency signal of the vortex detected by the piezoelectric sensor is amplified, filtered, and shaped and converted into a flow value for local display or signal selection.

The information here is provided to you free of charge by Jiangsu Jinhu Aotemei Automation Instrument Factory, hoping to bring greater help to those who need it.

Strohar's formula, f=stv d, st is again a Reynolds function, so when the Reynolds number is greater than 20000, it is a linear function. According to this principle.

I'll put it more in layman's terms, when a flag flutters in the wind, it swings left and right, and when the air flow increases, the higher the frequency of the left and right swings, and the frequency has a fixed relationship with the speed of the air flow after a certain speed. Vortex flowmeters are made on this principle.

I know the principle of vortex flowmeter, I don't know what I said to you? Send it out if needed.

Although these two types of flowmeters are flowmeters that use the principle of fluid oscillation, they use two completely different operating principles.

The flowmeter using the Karman vortex principle: when the fluid passes through a cylindrical object, it will produce a vortex on both sides of the object facing away from the fluid, when one side of the vortex develops, it will suppress the vortex on the other side, when the vortex on one side develops to a certain extent, it will leave the columnar object and go with the fluid and produce a new vortex in situ, while the vortex on the other side develops due to the loss of suppression, and suppresses the new vortex, the above process occurs alternately on both sides of the column, and the frequency of occurrence is related to the flow rate of the fluid, Detecting this frequency yields the flow rate and, in turn, the flow value. This phenomenon is also known as vortex because the alternating release of vortex is arranged in the fluid behind it like objects on both sides of the road.

A flowmeter that works according to this principle is called a vortex flowmeter or a Karman vortex flowmeter.

The flowmeter using the principle of precession-type vortex is set up in the pipeline to form a vortex generator, so that the fluid rotates when it passes, and forms a vortex near the center line of the pipeline, and the center of the vortex rotates around the center line of the pipeline while expanding the radius of rotation with the advance of the fluid, so that the center of the vortex forms a precession motion similar to a conical spiral. At this time, for a point on the pipe wall behind the vortex generator, the velocity of the fluid flowing through it will change periodically, and its frequency is related to the flow rate of the fluid, and the flow rate can be measured to obtain the flow rate, and then the flow value.

Flowmeters that work according to this principle are called vortex flowmeters or precession-type vortex flowmeters.

What precession vortex flowmeters have in common with vortex flowmeters

Both types of flowmeters belong to the type of velocity flow meters;

Both kinds of flow meters can be made into an integrated type of temperature and pressure compensation, and can measure various gases, such as compressed air, oxygen, biogas, natural gas, coal gas, etc.;

Both types of flowmeters have no mechanical moving parts, which are not easy to corrode, stable and reliable, have a long service life, and do not require special maintenance for long-term operation;

The highest accuracy can be achieved with both flow meters.

The difference between a precession vortex flowmeter and a vortex flowmeter:

The two types of flow meters work differently;

The smart precession vortex flowmeter can only measure gases, while the smart vortex flowmeter can also measure liquids and vapors;

The maximum caliber of the intelligent precession vortex flowmeter can only reach 200 calibers, while the maximum caliber of the intelligent vortex flowmeter can be 1000 calibers, of which 300-1000 is plug-in;

The cost performance of the intelligent precession vortex flowmeter is a little higher than that of the intelligent vortex flowmeter;

Turbine flowmeter and vortex flowmeter are commonly used flow measurement instruments, which have the advantages of accurate measurement, easy operation, stable performance and long service life. There is still a certain difference between the two in use, so what is the difference between the vortex flowmeter and the turbine flowmeter?

Inside the pipe where the fluid flows, an impeller is installed that can rotate freely, and when the fluid passes through the impeller, the kinetic energy of the fluid causes the impeller to rotate. The higher the velocity of the fluid, the greater the kinetic energy and the higher the impeller speed. In a defined flow range and a certain fluid viscosity, the rotational speed is linearly related to the flow rate.

Thus, by measuring the number of revolutions or rotational speed of the impeller, it is possible to determine the flow rate or total amount of fluid flowing through the pipe. Some of the water meters in our daily lives are made using this principle, and this kind of meter is called a speed meter. The turbine flowmeter is made using the same principle and improved in structure.

The vortex flowmeter is composed of several parts, such as the vortex generator, the vortex frequency detection element and the signal processing circuit. The vortex flowmeter, also known as the Kármán vortex flowmeter, is a vortex separation flowmeter made of the principle of natural oscillation of fluids. When a fluid flows through a columnar object at a sufficiently large flow velocity, a neatly arranged vortex column is generated along two parallel lines behind the columnar object, turning in opposite directions, which is called the "Kármán vortex street phenomenon".

The functions realized are the same, but they depend on the working conditions.