In industrial process control, energy measurement and gas/liquid flow monitoring, vortex flowmeters have become an important choice for flow measurement due to their advantages such as simple structure, wide range and high stability. However, in the face of different working conditions and application requirements, how to make the correct selection is of vital importance. This article will start from the key parameters to provide you with a detailed analysis of the selection points of vortex flowmeters, helping you achieve the best configuration.
Whether vortex flowmeters need temperature and pressure compensation when measuring steam mainly depends on the nature of the steam being measured and the requirements for measurement accuracy.
The intelligent vortex flowmeter can measure air. The vortex flowmeter is a new type of flowmeter that measures flow based on the Karman vortex street principle. It has excellent medium adaptability and can directly measure the working volume flow of various media (including air).
The power supply methods of the helical vortex flowmeter are diverse to meet the demands of different application scenarios. The main power supply methods include the following:
There are various types of flowmeters for measuring nitrogen, and each type has its specific application scenarios and advantages. The following are some common nitrogen flowmeters:
vortex flow meter on production line, waiting to be assembled and calibration. vortex flow meter is used for measure steam, it can stand high temperature and high pressure
Vortex flowmeter is also known as Karman vortex flowmeter. Vortex flowmeter is a kind of separation flowmeter made by using the principle of natural oscillation of fluid. When a fluid flows at a sufficiently large velocity through an object perpendicular to the direction of the fluid, if the object is of appropriate size, it will produce a neatly aligned and reversed vortex train behind the object along two parallel lines.
The installation of the vortex flowmeter has different provisions, used to measure different measured media, different positions, then the installation method is not the same, the attention point is different, generally speaking, the vortex flowmeter has the following specified points:
The precession vortex flowmeter adopts advanced microprocessing technology, which has the advantages of strong function, wide flow range, simple operation and maintenance, convenient installation and use.
Vortex flowmeter is used by many industries for its simple structure, small maintenance, constant accuracy, easy operation and wide application range.
The factors that affect the accurate measurement of vapor gas flowmeter are mainly the following:
1. Requirements for piping:
The inner diameter of the upstream and downstream piping at the installation point of the steam flowmeter is the same as the inner diameter of the flowmeter.
The working principle of vortex flowmeter is to place a non-streamlined vortex generator in the fluid, so that the fluid is alternately separated on both sides of the generator, releasing two series of regularly staggered vortex flowmeter. In a certain range, the vortex separation frequency is proportional to the flow rate, and the flow rate of the medium can be measured by calculating the vortex separation frequency.
With the continuous production progress of the reform and opening up industry, it has been applied in more and more industries, and the vortex flowmeter is widely used in large, medium and small pipeline water supply and drainage, industrial circulation, and sewage treatment. Oil and chemical reagents as well as compressed air, saturated vapor and superheated vapor, natural gas flow measurement of various media and can be used as a flow transmitter in automated control systems.
Many owners will occasionally encounter that the vortex flowmeter does not have a flow display when using the vortex flowmeter. For this situation, Aister gives the following treatment methods:
Due to the compressibility of the gas, its flow measurement is more complex than that of the liquid, and the output signal of the vortex flowmeter is related to the gas density in addition to the input signal, and the density of the gas is a function of temperature and pressure (referred to as temperature and pressure).
1. Vibration effect
Compressed air is generated by air compressor or high pressure fan. When these devices are in operation, they all have varying degrees of vibration, and sometimes the vibration is relatively strong, and this vibration is transmitted through the connecting pipe. When selecting and determining the position of the vortex flowmeter, this influencing factor should be fully considered. In various detection methods, the anti-vibration performance of the instrument is not the same due to different detection components. For the vortex street of the detection element, the vibration resistance can reach 0.5~1G. When determining the installation position of the vortex flowmeter, it should be as far away from the power equipment such as air compressors and fans as possible.
In the process of using the steam flowmeter, we may encounter some minor failures, do not panic after the problem, find out how to deal with is the key. The following introduces several common faults of steam flowmeters and their solutions.
Vortex flowmeter is the use of fluid flowing through the obstruction to produce a stable vortex, by measuring the vortex generation frequency II to achieve flow measurement. Vortex flowmeter is composed of vortex flow sensor and flow display instrument. The display instrument is a general flow display instrument. The following introduces the installation points of steam flowmeter.
Vortex flowmeter is a velocity flowmeter, which measures the volume flow rate in the working state. If you choose the table according to the volume flow rate, the mass flow rate provided by the customer should be converted into the volume flow rate under the working state, and then determine the diameter of the selected instrument against the volume flow parameter.
At present, there are many misunderstandings about steam measurement in China, and many users often think that buying a high-price flowmeter can get accurate measurement results. The measurement of steam is different from other fluids such as water, air and other media, and there are many factors affecting its measurement in the actual measurement. Therefore, there is often a phenomenon that the flow meter itself is qualified, but the actual measurement is not “allowed”. So what’s the problem with these factors?
1, pulse vortex flowmeter is a kind of high measurement accuracy, simple installation, small maintenance, a wide range of meters, is currently widely used in petrochemical, metallurgy, textile, urban construction, energy and other industries.
Vortex flowmeter is widely used in various industrial environments, in view of some small problems commonly encountered in the installation of vortex flowmeter, Aister gives the following points, hoping to solve the problems encountered in the installation.
The working principle of vortex flowmeter is to place a non-streamlined vortex generator in the fluid, so that the fluid is alternately separated on both sides of the generator, releasing two series of regularly staggered vortex flowmeter. In a certain range, the vortex separation frequency is proportional to the flow rate, and the vortex flowmeter can measure the flow rate of the medium by calculating the vortex separation frequency.
Vortex flowmeter is a commonly used flow meter, the use of any instrument is inseparable from daily maintenance and maintenance, whether it is its own failure or interference by external factors, we calmly respond to the occurrence of failure.
Vortex flowmeter is widely used because of its wide range, small pressure loss, medium accuracy, linear output, no moving parts, high reliability, small maintenance, medium low price, relatively high performance and price characteristics.
In the process of diameter selection of vortex flowmeter, special attention should be paid to the fact that the diameter of vortex flowmeter cannot be selected according to the original pipe diameter on site. The diameter of the vortex flowmeter should be determined according to the parameters in the pipeline such as the flow range of the medium in the pipeline, working temperature and working pressure, and then combined with the technical parameters of the vortex flowmeter.
Vortex flowmeter common faults and solutions
