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Industry Information
Ultrasonic flow meters are rapidly developing into the field of flow measurement
2012-3-24 9:40:24

With the strong growth of the oil and gas industry, and the industry's gradual acceptance of field equipment technology, the total global market for ultrasonic flow meters will grow at a compound annual growth rate (CAGR) of 9.6% over the next five years.
正在快速发展成为流量测量领域,尤其是计量碳氢化合物的首选。 Ultrasonic flow meters are rapidly developing into the field of flow measurement, especially the first choice for measuring hydrocarbons. AllenAvery, the principal author and automation analyst of the ARC entitled "World Prospects for Ultrasonic Flowmeters," said: "Although the technology of ultrasonic flow measurement has been around for decades, its application is very small. As users gradually Recognizing the many advantages of ultrasonic flow meters, including high accuracy, unobstructed measurements, and lower total cost of ownership, this situation will gradually change. "
I. Ultrasonic flowmeters are rapidly spreading in the oil and gas field
In recent years, almost all the growth of the ultrasonic flowmeter market is due to the increase in sales of this product in the oil and gas field-the sales of ultrasonic flowmeters in this field have almost doubled compared to the previous. Due to the promotion of the AGA9 guardianship transportation standard, the guardianship transportation market for natural gas has basically taken shape.
Second, the ultrasonic flowmeter has high accuracy and low total cost of ownership
Whether technically or economically, ultrasonic measuring instruments are ideal for flow measurement. Through multi-beam and digital signal processing, the ultrasonic measuring instrument can achieve high measurement accuracy. Unlike traditional turbine meters, it has no moving components and therefore requires little maintenance. Moreover, it does not block or slow down the flow of gas or liquid in the pipeline. It can accurately measure the wide frequency range of LPG products without the need to be proven like mechanical technology. The high sensitivity makes it possible to detect any leaks in the pipeline, and it can measure and supplement a variety of variables that affect the accuracy of measurements in the field of guardianship transportation.
Third, the ultrasonic flowmeter has the largest growth in the Asian market
The growth of ultrasonic flow meters in Asia and the Middle East will be the largest. China and India will invest heavily in infrastructure and new plants. China lacks energy. In order to find energy to promote rapid economic development, it will transform its oil and gas infrastructure and establish pipelines that connect oil suppliers in Russia and other regions. Due to the Middle East's position in oil and gas production, this region will still be fertile ground for ultrasonic flowmeter suppliers. The area will also invest in several large power generation and desalination plants. In contrast, the North American market growth is relatively flat, but due to the region's investment in oil and gas infrastructure and industrial automation, the North American market will still have considerable growth. With the development of science and technology and the deepening of research on flow measurement technology, the advent of gas ultrasonic flowmeters in recent years has aroused widespread interest in the flow field. In order to adapt to the development of natural gas in the west of China and meet the requirements of the West-to-East Gas Transmission Project, China formulated the national standard GB / T 18604 "Measurement of Natural Gas Flow with Gas Ultrasonic Flowmeter" in 2001. 的性能,西南油田分工司率先首批有针对性地引进了国外二个公司的超声波流量计产品,并在华阳天然气流量测试中心,对其性能进行了系统测试,之后在典型站场上进行了工业性试验,为今后气体超声波流量计在我国天然气领域中的推广使用提供了宝贵经验。 At the same time, in order to verify the performance of the gas ultrasonic flowmeter , the Southwest Oilfield Division firstly introduced the first batch of ultrasonic flowmeter products from two foreign companies and systematically tested its performance at the Huayang Natural Gas Flow Test Center. After that, industrial tests were carried out on typical stations, which provided valuable experience for the promotion and use of gas ultrasonic flow meters in the natural gas field in China in the future.
Accurate gas flow measurement is a key part of the economic analysis and reduction of operating costs of the enterprise sector, which directly affects the economic benefits of an enterprise and attracts much attention from both supply and demand sides. With the world's energy supply and demand becoming increasingly tight; people are very concerned about and seek a high-precision, adaptable flow meter to measure natural gas flow to protect the interests of enterprises. Since the ultrasonic flowmeter was put on the market, compared with other types of current flowmeters, it has obviously more and better performance characteristics, so it has been favored by people. In recent years, ultrasonic flowmeters have been used in several new large-scale gas pipeline projects in North America and Canada, such as AIIiance pipelines, Vector pipes, and northern border pipelines. As a trade measurement, the application effect has been confirmed. In the last two or three years, China has introduced about 30 ultrasonic flowmeters from abroad, and one-third of the Southwest Oilfield Company. According to incomplete statistics, the ultrasonic flowmeters currently in use in China account for about 5% of the world's usage. It can be seen that China's flow industry is quite concerned about this new type of flow meter. At present, the west-to-east gas transmission project from Xinjiang South to Shanghai is under construction. The preferred flowmeter for trade measurement is an ultrasonic flowmeter with a diameter of DN250 ~ 300mm; a small and medium-sized station uses a DN50 ~ 200mm turbine flowmeter. With the development of China's natural gas industry, the application prospect of ultrasonic flowmeters in the field of natural gas industry is promising.
With the development of science and technology, the emergence of new flowmeters is inevitable. However, because the natural gas flow measurement technology involves a wide range, with different objects, different requirements are placed on the flowmeter, that is to say, multiple flowmeters can coexist objectively to meet the needs of different occasions and levels. Although the ultrasonic flowmeter has more advantages than the currently widely used orifice flowmeter, it is mainly reflected in the lower system basic investment, two-way measurement, large range ratio, no pressure loss, no moving parts and high Accuracy, etc. However, due to the long history of orifice flow measurement technology, the high degree of standardization, simple and reliable use, and generally no calibration is required when there are no special requirements. It can be seen that despite the advent of ultrasonic flowmeters, they can only play a complementary role, and it is certainly impossible to completely replace them. For quite a long time to come, due to various factors, especially before the calibration cannot be properly resolved, the orifice flowmeter is still one of the main methods of natural gas measurement.
It takes a long process for any new type of flowmeter to obtain industrial application and approval, which means that people understand it on the one hand, and the problems exposed by the flowmeter itself and the application on the other hand, can No satisfactory solution. 而言,仍有一些实际使用中的工作需要做,超声波流量计工业化试验试用还需要进一步开展。 As far as ultrasonic flowmeters are concerned, there is still some work in actual use that needs to be done, and the industrial test trials of ultrasonic flowmeters need to be further developed. Although the current report AGA N09 has been issued, and the ISO has issued TR12765 technical documents, China has also formulated the corresponding GB / T18604 standard. From the perspective of industrialization and standardization, in order to obtain wide industrial application, ultrasonic flowmeters should also solve the following three aspects.
1. For the impact of different types of resistance parts on the upstream side of the industrial flow field, how to reasonably determine the length of the straight pipe section upstream of the flow meter under different conditions
2. The influence of changes in operating pressure, temperature and gas composition on flow measurement and correction methods;
3. Accurate determination of correction coefficients for velocity profiles of different Reynolds numbers and the effect of accuracy caused by geometrical errors of the flowmeter body.
4. Stability of probe electrical characteristics and interchangeability of probes.