1, precession vortex flowmeter
At present, in the process of metering and management of natural gas , instruments are relatively critical application equipment. By scientifically screening its basic types, measurement accuracy can be effectively improved, the probability of transmission error problems can be reduced, and the goal of protecting economic benefits and user rights can be achieved. Commonly used instrument devices are divided into several basic types, and the precession vortex flowmeter is one of the classic solutions. This type of flowmeter is mainly used in the management area, and it has a relatively similar infrastructure to the vortex flowmeter . There are no movable components inside the
precession vortex flowmeter, so its measurement flow limit is high, which can effectively avoid jamming problems and has lower mechanical wear than other solutions. At the same time, the precession vortex has a compact structure, low threshold for use, and easy operation. It has been widely used in natural gas metering and management. Under normal conditions, the basic error of the precession vortex flowmeter is within 1.5%. After the microelectronic solution is gradually promoted, this type of flowmeter can further improve the accuracy, which is beneficial to reducing the probability of transmission difference problems and has important application value.
2, orifice flowmeter
orifice flowmeter is one of the more common types of flowmeters. It is essentially based on the classic pressure difference principle and has been widely used due to its low cost. Our country is able to achieve fully independent production of orifice plate flowmeters, which have good durability, simple manufacturing process, low cost consumption, high standards and high safety, and can be fully applied in various natural gas transportation scenarios. However, compared with other solutions, orifice flowmeters also have significant defects. For example, its loss under pressure conditions is relatively serious, and natural gas measurement data cannot be directly read. The accuracy of the results is easily affected by personnel or installation conditions, leading to deviation problems.
In the practical application stage, the orifice flowmeter mainly includes mechanical solutions, microcomputer solutions, and electric unit combination solutions. Mechanization solutions have been widely used in the natural gas industry. For example, a certain double-wave differential pressure flow meter has successfully stood out among other flow meters in the natural gas trade due to its advantages of low cost and indirect application. Compared with other solutions, the configuration process of the orifice flow meter is simple, and the ideal measurement effect can be achieved without investing too much effort. However, due to accuracy problems, other solutions and measures should be taken in the future to replace the traditional orifice flowmeter to achieve the goal of reducing the probability of differential transmission problems. The microcomputer solution mainly uses computer equipment to replace mechanized components. It has similarities with the electric unit combination. It is an important improvement form of the traditional solution and can effectively improve the accuracy level. Therefore, it is necessary to pay attention to the main development trends of orifice flow meters to ensure that they can be fully technologically transformed, further explore their cost advantages, and improve basic accuracy to provide important support for future natural gas measurement work.
3, vortex flowmeter
vortex flowmeter also has an important application effect in actual work. It usually does not have movable parts, so its overall reliability is high and its measurement range is wide. By applying it in natural gas metering work, it can effectively adapt to various basic scenarios and minimize cost investment requirements. However, due to certain limitations in its Reynolds number , the actual application effect in natural gas metering work often cannot reach the optimal level. At present, stress measurement solutions are generally constructed using the vortex street method, which has a relatively low anti-interference effect and cannot be applied in environments with severe interference or vibration. Therefore, it is necessary to pay attention to the screening of flow meter types to ensure that its related factors can be effectively solved to meet the actual needs of natural gas measurement, achieve ideal analysis goals, improve its basic accuracy and control the transmission difference.
