How to choose a turbine flowmeter? What is the quality of the self sustaining turbine flowmeter?

How to choose a turbine flowmeter? What is the quality of the self-sustaining turbine flowmeter?

This article analyzes in detail how to select a turbine flowmeter; If you think it is helpful to you, please raise your hand and give a thumbs up to the American Vton flowmeter!

Turbine flowmeters are the main type of velocity flowmeters, which use a multi-bladed rotor (turbine) to sense the average flow velocity of the fluid, so as to derive the flow rate or total amount.

Turbine flowmeter selection: Confirm the available measurement objects, forms, and specifications.

1.Confirmation of available measurement objects; It is the confirmation of the medium.

2.Select the type. According to the physical properties of the fluid, gas and liquid are selected gas type and liquid type respectively, which cannot be universal. In the working state, the liquid viscosity exceeds 5MPa·s, and the high viscosity type should be selected. Acidic corrosive fluids are acid-resistant.

Select according to environmental conditions, choose the appropriate instrument according to the ambient temperature and humidity, and choose an explosion-proof sensor if there is a flammable atmosphere around.

Depending on the pipe connection method, the sensor can be installed horizontally and vertically. When installed horizontally, it is connected to the pipe in flange connection, threaded connection and clamp connection. Flange connection is used for medium diameter, threaded connection is used for small diameter and high-pressure pipes, and clamp connection is only suitable for low-pressure and medium-sized pipe diameters.

Vertical installation has only threaded connections.

3.Select a specification. According to the field use conditions, such as flow range, pipe diameter, fluid pressure and temperature, installation location, etc., and performance requirements, such as precision-accuracy, repeatability, display mode, etc.

The self-supporting instrument turbine flowmeter that is often used in the general market is a kind of speed instrument, which has the advantages of high precision, good repeatability, no zero drift, high range ratio, simple structure, few moving parts, high pressure resistance, wide measurement range, small size, light weight, small pressure loss, convenient maintenance, etc., and the following five aspects need to be considered when selecting the self-oriented turbine flowmeter.

1. According to the requirements of the measurement purpose:

It is required to select with instantaneous or cumulative flow (cumulative flow), unit of flow display, measurement accuracy, repeatability, linearity, flow range and range, measurement temperature, pressure loss, temperature and pressure compensation, output signal characteristics, response time, etc. Different measurement objects have their own measurement purposes and have different emphases in terms of turbine flowmeter performance.

2. Requirements for the properties of the measurement medium:

Chemical corrosion and fouling, the chemistry of the fluid is sometimes the deciding factor in the selection of measurement methods and instruments. Certain fluids can cause corrosion of instrument contact parts, surface scaling, or electrolytic chemistry on the metal surface of the crystal.

3. Requirements for measuring the phase of the medium:

Caution should be exercised depending on whether the measurement medium is a single phase change medium or when measuring multiphase and multi-component flows. The turbine flowmeter can measure a single clean medium, and the electromagnetic flowmeter can measure the solid-liquid two-phase mixed medium.

4. Compression system and other parameter requirements:

Measuring a gas requires knowing the compressibility coefficient value in order to find the density of the fluid in the operating state. Fluids with fixed compositions calculate density by pressure, temperature, and compressibility factor; Fluids with varying compositions and operating in close (or in) supercritical regions should be considered for measuring density.

5. Measurement accuracy requirements:

It is important to determine the overall measurement accuracy requirements and whether it will be used at a specific flow rate or if there will be significant variations in temperature and pressure over a certain flow range, which will generally be low and will vary little between gases. The accuracy level of intelligent liquid turbine flowmeter is commonly used grade and grade, which is higher than that of general rotor flowmeter, which is a good choice for customers with high accuracy requirements.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

In the consultation we received a variety of instrument products, the proportion of consultation on selection is very high, indeed, industrial instruments seem simple, if you talk in depth, there is still some difficulty, generally do not have enough professional knowledge or experience of friends, it is difficult to quickly and effectively choose a suitable instrument for yourself, spend a lot of time, energy, still choose the wrong situation is a lot, in order to help you avoid detours, today we take the turbine flowmeter as an example, sorted out several important dimensions that will be used in the selection, As long as you choose around these factors, you can quickly find the right turbine flow meter.

Accuracy. The use environment of turbine flowmeter generally has higher requirements for measurement accuracy, whether it is to measure gases or some low-temperature liquids. Therefore, a good turbine flowmeter must meet the accuracy standard, otherwise it will not be able to meet the required flow measurement level.

Stable performance. In addition to accurate measurement, the turbine flowmeter should also have stable performance, which can meet the needs of long-term measurement, and is not easily affected by external factors, and can work normally in some harsh environments.

Fast response. Turbine flow meters must have a fast response capability to ensure that measurements can be completed in a short time, as the flow rate of high-speed fluids is sometimes measured. Therefore, the response time of the turbine flowmeter is required to be fast enough, so that the staff can quickly grasp the flow situation and control the flow.

Multiple connection methods.

The use environment is different, the installation environment may be different, which requires the turbine flowmeter to have a variety of connections to improve the adaptability, the main connection methods of the turbine flowmeter are voltaic flange connection, threaded connection, direct connection, etc., which can be selected according to their own needs.

Measuring range. The accuracy of the turbine flowmeter has a certain relationship with the flow range, and it can be flexibly selected according to the need. If you want to measure a small flow range, you can choose some turbine flowmeters with high accuracy, and if you want to have a large flow range, you can choose some turbine flowmeters with a general slow hall tank.

The Turbine Boost Flow Meter is a special type of flow meter that combines a turbine flow meter with a boost technology.

Conventional turbine flowmeters are based on the principle that a fluid passes through a rotating turbine to generate a rotational moment for flow measurement. The turbine blades are fixed in the channel where the flow of the wax punch body flows, and when the fluid passes through the channel, the turbine blades are rotated by the force of the fluid. By measuring the rotational speed of the turbine, the flow rate of the fluid can be calculated by BiBo.

Turbo flowmeters, on the other hand, combine the above principles with booster technology. It adds a pressurization device to the traditional turbine flow meter, so that the fluid is compressed before passing through the turbine and then enters the turbine for measurement.

Here's how a turbocharged flowmeter works:

Compressed fluid: The fluid entering the turbocharged flowmeter first passes through a booster device, usually a centrifugal compressor or pusher centrifugal fan. Pressurization devices pressurize and compress the fluid, increasing its kinetic energy and velocity.

Fluid passes through the turbine: The pressurized fluid enters the turbine cavity, and the high-velocity flow of the fluid causes the turbine blades to be subjected to a force that rotates.

Flow is measured by turbine rotation: The rotational speed of the turbine is directly proportional to the flow rate of the fluid. The sensor measures the rotational speed of the turbine and converts the rotational speed signal into the corresponding flow value.

A turbine flow meter is a flow meter used to measure the flow rate of liquids or gases. It uses the power generated by the turbine rotating in the fluid to measure the fluid flow rate and cumulative flow.

The working principle of a turbocharged flowmeter is that the fluid passes through the flow channel of the flowmeter and flows through a turbine equipped with blades along the central axis of the flow channel. As the fluid passes through the turbine blades, the power of the fluid will make the blades rotate. The rotational speed of the turbine is directly proportional to the flow rate of the fluid.

The kinetic energy of the fluid flowing through the turbine is converted into rotational moment, and the speed of the turbine rotation is measured in real time by the sensor and converted into the corresponding flow velocity value. Combined with the cross-sectional area of the fluid flow path, the volumetric flow rate of the fluid can be calculated. By integrating the time, you can also get the total flow that has been accumulated.

Turbocharged flowmeters have the characteristics of fast response, can measure a wide range of flow rates, and high accuracy. It is widely used in petroleum, chemical industry, water treatment, aerospace and other fields, and is often used to measure the flow rate of spring fluids such as gas, liquid petroleum products, and chemical liquids. Turbocharged flowmeters often need to choose the right materials and specifications according to the specific application scenario to meet different measurement needs.

The selection of turbine flowmeter should pay attention to the following points:

Measure the state of the medium, i.e. determine whether it is a gas or a liquid.

2.What is the measurement aperture, what is the flow range, and verify whether the selected measurement aperture is suitable through the flow range.

3.Measure the temperature, judge whether the turbine flowmeter can meet the measurement requirements by measuring the temperature, and the turbine flowmeter cannot measure the high-temperature medium.

4.The corrosiveness of the medium, judging whether it will corrode the turbine flowmeter gauge body 5Power supply, according to the on-site power supply, can be 24V, can also be lithium battery power supply 6The output signal type is generally 4-20mA or pulse signal 7Explosion-proof requirements.

The technology of this first-class measuring manufacturer, according to my own technical summary for many years, I hope it can help you.

The selection parameters of turbine flowmeter include medium, pipe diameter, nominal pressure, connection mode, working temperature, working pressure, output mode, power supply, etc.

1. Fluid type: Different flow meters are required for clear and mixed liquids, clean gases and mixed gases.

2. Flow range: The flow range of the fluid should be moderate and should not exceed the range of the flow meter.

3. Pipe size: For small pipe size, rotor, turbine and turbine flowmeter are generally selected, and turbine flowmeter and ultrasonic flowmeter are generally used for large pipe diameter. Some materials are not suitable for electromagnetic and ultrasonic.

Hello,Turbine flowmeter manufacturer imported from the United States - KNKEGlad for your question.

The turbine flow sensor is composed of a display instrument. The sensor has the characteristics of high accuracy, good repeatability, long life and simple operation. It can be widely used in petroleum, chemical, metallurgy, paper and other industries to measure the volumetric instantaneous flow and total volume of liquids.

It has a wide range of use value in petroleum, chemical, metallurgy, city gas pipeline network and other industries.

Kornke KNKE turbine flowmeter manufacturer.

The above is the answer to the use of turbine flowmeter imported from the United States - Keen KNKE on the use of turbine flowmeter, I hope my help to you, more information about turbine flowmeter, you can go to the official website of Keen Flowmeter in the United States.

The turbine flowmeter consists of a turbine, a bearing, a preamplifier, and a display instrument.

The principle of the turbine flowmeter is to place a turbine in the center of the pipeline, and the two ends are supported by bearings When the fluid passes through the pipeline, the turbine blades are impacted, and the driving torque is generated on the turbine, so that the turbine overcomes the friction moment and the fluid resistance torque and rotates In a certain flow range, for a certain viscosity of the fluid medium, the rotation angular velocity of the turbine is proportional to the fluid flow velocity Thus, the fluid flow rate can be obtained by the rotation angular velocity of the turbine, so that the fluid flow through the pipeline can be calculated

The rotational speed of the turbine is detected by the sensing coil installed outside the casing When the turbine blade cuts the magnetic field lines generated by the permanent magnet in the casing, it will cause the magnetic flux change in the sensing coil The sensing coil sends the detected magnetic flux periodic change signal to the preamplifier, amplifies and shapes the signal, generates a pulse signal proportional to the flow rate, and sends it to the unit conversion and flow product circuit to obtain and display the cumulative flow value; At the same time, the pulse signal is also fed into the frequency current conversion circuit, and the pulse signal is converted into analog current flow, and then the instantaneous flow value is indicated

The measured fluid impacts the turbine blades, so that the turbine rotates, and the speed of the turbine changes with the change of the flow rate, that is, the flow rate is large, and the speed of the turbine is also large, and then the speed of the turbine is converted into the electrical pulse of the corresponding frequency by the magnetoelectric conversion device, and after amplification by the preamplifier, it is sent to the display instrument for counting and display, and the instantaneous flow rate and cumulative flow can be obtained according to the number of pulses and the cumulative number of pulses in the unit time.

The working principle of the turbine transmitter is that when the fluid flows along the axis of the pipeline and hits the turbine blades, there is a force proportional to the product of the flow rate qv, flow velocity v and fluid density to act on the blades and push the turbine to rotate. While the turbine rotates, the blades periodically cut the magnetic field lines produced by the electromagnet, changing the magnetic flux of the coil. According to the principle of electromagnetic induction, a pulsating potential signal will be induced in the ** circle, and the frequency of this pulsating signal is proportional to the flow rate of the measured fluid, i.e.:

where qv is the total volume of the fluid, and n is the total number of pulsations generated by the transmitter; is the flow coefficient.

It is an important characteristic parameter of the turbine transmitter, which is different for different instruments and changes with the wear and tear of the instrument for a long time; This means the number of pulses output by the transmitter as a unit volume of flow passes through the transmitter.

The pulse signal output by the turbine transmitter is amplified by the amplifier and then sent to the display instrument to measure the flow rate.