What are the advantages of vortex flowmeters? Which vortex flowmeter in China has done better

The vortex flowmeter adopts high-tech micro-power consumption, and can run uninterrupted for more than one year with lithium battery power supply, which saves the purchase and installation costs of cables and display instruments, and can display instantaneous flow and cumulative flow on the spot. The temperature-compensated vortex flowmeter also has a temperature sensor that can directly measure the temperature of the saturated steam and calculate the pressure to display the mass flow rate of the saturated steam. The integrated type of temperature and pressure compensation is equipped with temperature and pressure sensors for gas flow measurement, which can directly measure the temperature and pressure of the gas medium, so as to display the standard volume flow rate of the gas.

Jinan Chuangrui Instrument is a collection of scientific research, development, production, service of a new type of enterprises, the company's products CR series vortex flowmeter, mainly used for industrial pipeline medium fluid flow measurement, such as vapor, liquid, steam and other media. It is characterized by small pressure loss, large measuring range, high accuracy, and is almost not affected by parameters such as fluid density, pressure, and temperature when measuring the volume flow rate under working conditions. There are no moving mechanical parts, so it is highly reliable and requires little maintenance.

The instrument parameters can be stable for a long time. This instrument adopts piezoelectric stress sensor, which has high reliability. There are analog standard signals, as well as digital pulse signal output, which is easy to use with digital systems such as computers, and is a comparative, ideal flow meter.

The measurement results of vortex flowmeter are not affected by temperature, pressure, etc., and the measurement accuracy is high, and fluid media below 300 degrees can be measured.

Hello,The United States imported vortex flowmeter manufacturer - Kornke KNKEGlad for your question.

Kornke KNKE imported turbine flowmeter.

1) The vortex flowmeter has no moving parts, and the measuring element has simple structure, reliable performance and long service life.

2) The vortex flowmeter has a wide measurement range. The turndown ratio can generally reach 1:10.

3) The volumetric flow rate of the vortex flowmeter is not affected by the thermal parameters such as temperature, pressure, density or viscosity of the measured fluid. In general, there is no need for separate calibration. It can measure the flow of liquids, gases, or vapors.

4) It causes little pressure loss.

5) High accuracy, repeatability, and small maintenance.

That's itThe United States imported vortex flowmeter manufacturer - Kornke KNKE, on the subject. If you have the purchase needs of vortex 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.

The domestic vortex flowmeter is now relatively perfect, to find some independent brand of large manufacturers, Beijing Xingyi, Enbang, Ott this kind of company, ** cheaper than foreign countries, the quality is also very good, mainly depends on the use of working conditions, the model of the vortex street, the range has a great impact, you need to choose according to your working conditions.

In fact, the answer to this question can not get what we think, many of them are factory self-evaluation, and they will definitely not say that their products are poor, so the question is, how to choose.

First: in terms of production, at least the enterprise must have its own production qualifications and have been recognized by the state.

Finally, I believe that judging it as good or bad should also have a clear definition!!

The working principle of the vortex flowmeter is to set up the vortex generator in the fluid, so that the two sides of the vortex alternately produce regular vortices, and the vortex columns are arranged asymmetrically in the downstream of the vortex generator to produce a certain frequency, through the formula f=st*v (, (st is the Straubhar number, which is a dimensionless number, and is related to the vortex generator and the Reynolds number; v is the flow rate; d is the frontal width of the generating body; d is the nominal diameter) to obtain the flow rate.

Generally speaking, the output signal (frequency) of the vortex flowmeter is not affected by the change of the physical properties and composition of the fluid, which means that the gauge coefficient is only related to the shape and size of the vortex generator and the Reynolds number. Its advantages are: simple and firm structure, easy installation and maintenance; It is suitable for a variety of fluids, including liquid, gas, steam and some mixed phases; The accuracy is high, generally about 1%r; Wide flow range up to 10:

1 or 20:1 or greater; Low indenter loss; No zero drift; Relatively inexpensive; The disadvantages are: it is not suitable for the case of low Reynolds number RE 20000, and there are restrictions on the use of high viscosity, low flow rate and small diameter; The requirements for the environment are high, and the places with vibration should be eliminated as much as possible, and the upstream side needs to have a long straight pipe section; The gauge coefficient is lower, and the larger the caliber, the lower it is.

The signal resolution is reduced, so the aperture should not be too large, and it is generally used in DN15 DN300mm.

1.Merit. The vortex flowmeter has a simple and firm structure, easy to install and maintain (compared with the throttled differential pressure flowmeter, it does not need a pressure impulse pipe and a three-valve group, etc., reducing leakage, blockage and freezing, etc.).

It is suitable for many types of fluids, such as liquids, gases, vapors and partially miscible fluids.

The accuracy is high (compared with differential pressure and float type flowmeters), and the pressure loss is generally small (about 1 4 1 2 for orifice flowmeters) of the measured value (about 1 4 1 2 for orifice flowmeters). The output pulse signal is proportional to the flow rate, which is suitable for total volume metering, and there is no zero drift; Within a certain range of Reynolds number, the output frequency signal is not affected by the physical properties (density, viscosity) and composition of the fluid, that is, the instrument coefficient is only related to the shape and size of the vortex generator and pipeline, and only needs to be verified in a typical medium and is applicable to various media.

2. Limitations.

Vortex flowmeters are not suitable for low Reynolds number measurements (RED 2 104) and are therefore limited in high viscosity, low flow rates, and small bore conditions.

The stability of vortex separation is affected by the distortion of flow velocity distribution and rotational flow, and a long enough straight pipe section or flow regulator (rectifier) should be installed according to the different forms of chokeholders on the upstream side. Compared with the turbine flowmeter, the instrument coefficient is lower, the resolution is low, the larger the diameter, the lower the diameter, and the full-tube flowmeter is generally used below DN300. There is still a lack of theoretical research and practical experience in fluctuating flow and miscible flow.

The best companies of vortex flowmeter include Shanghai Meixu Measurement and Control Technology, Hongdian Vortex Flowmeter, Beijing Chengchuang Tiansheng Automation Technology, Cangzhou Xunnuo Instrument, and Jinhu Dotte Automation Instrument.

1. Shanghai Meixu Measurement and Control Technology, Shanghai Meixu Measurement and Control Technology Co., Ltd. is engaged in technology development, technical consultation, technical services in the field of measurement and control technology, Internet of Things, computer technology, as well as the development, production and sales of a series of products such as instrumentation, sensors, transmitters, electronic products, electromechanical equipment, and auto parts.

2. Macro current flowmeter, macro current flowmeter integrates ultrasonic Doppler technology, signal processing algorithm, and cost-effective contact flow sensor equipment for automatic calculation of flow rate in various sections, which is suitable for fluid flow measurement occasions with turbidity greater than 20mg L, and provides accurate flow data for drainage network flow simulation and verification, waterlogging simulation, drainage network maintenance, etc.

3. Beijing Chengchuang Tiansheng Automation Technology Co., Ltd., Beijing Chengchuang Tiansheng Automation Technology Co., Ltd. has strong development technology and sophisticated production and testing experimental equipment, and has established a perfect production quality process control management system. Design and development according to market demand - pressure, torque, temperature, weighing, liquid level and other series of sensors and intelligent automation instruments.

4. Cangzhou Xunnuo Instrument, Cangzhou Xunnuo Instrument is a modern high-tech enterprise integrating R&D, production and sales of intelligent instruments, as a professional manufacturer of industrial automation instruments, it not only has strong technical force, production technology, advanced testing equipment and perfect scientific management system.

5. Jinhu Dotte Automation Instrument, Jinhu Dotte Automation Instrument has introduced foreign technology and equipment from the nineties, is diligent and realistic, and constantly innovates, and has formed a complete set of serial production scale such as field instruments, V-cone flowmeter, precession vortex flowmeter, metal tube float flowmeter, electromagnetic flowmeter, magnetic flap level gauge, disc instrument, metering instrument, instrument pipe fittings, etc. At the same time, in order to meet the needs of users, it also provides products from well-known foreign enterprises such as the United States, Japan, and Germany.

Vortex flowmeter, also known as Carmen vortex or Karman vortex.

He is a Hungarian-American aerodynamicist, a physical theory proposed by von Kármán, and a doctoral supervisor of Qian Xuesen in China.

Vortex street refers to the fluid placed in the fluid of the blocking fluid, under specific conditions, there will be an unstable boundary layer separation phenomenon, the two sides of the downstream of the resistance fluid, will produce two asymmetrically arranged vortices, one side of the vortex rotates in the clockwise direction, the other side of the vortex rotates in the opposite direction, the two rows of vortices are staggered with each other, like the street lamps next to the street, so it is named vortex street.

In the daily life of Pingdo Tong, the river flows through obstacles, and it is used to cover the Whirlpool Street. A resistor will be set at the entrance of the flowmeter to generate a vortex Hu Wei Street, and the vortex will impact the pendulum sensor behind the resistor fluid to record the frequency of the vortex, the higher the flow velocity, the higher the vortex frequency. There is a specific relationship between fluid flow rate and frequency, and the flow meter calculates the flow information through the internal chip calculation.

The vortex flowmeter is digitally designed, and its sensor is with a display type, which can clearly see and laugh at the instantaneous flow and cumulative flow rate when measuring the flow.

Hello, about this kind of problem, the vortex flowmeter is digitally designed, its sensor macrometer is with a display type, can clearly see the instantaneous flow rate and cumulative flow of the measured flow, and the computer network, to achieve centralized management of a flow measuring instrument. Hope it helps, hope!

Vortex flowmeter is an instrument used for flow metering, which can measure liquids and gases, and can meet the measurement conditions of 300 degrees.