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Explain the obvious progress of the vortex flowmeter

Since the 1990s, the development of vortex flowmeters has made significant progress in the following areas:
(l) Skill basic tasks are carried out to a deeper level. In Japan, the task of researching the vortex flowmeter dry calibration was carried out, and the consequences were obtained by deep people. In order to show victory in this respect, they revised and supplemented the 1989 edition of the industry standard, adding to the content of the standard attack body and the influence of the local size on the Strauhal number and the influence of the installation of the vortex flowmeter. content. This is the new version of JISz8766:2(X)2.
(2) Signal processing skills are being developed in the direction of digitization. From the application of the conventional active filter to the tracking filter, adaptive filtering and digital spectrum analysis, the direction of the vortex flowmeter is improved, the anti-interference ability and the measurement range are improved.
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(3) In the direction of integration, intelligence and multi-parameter detection, the fieldbus technology is introduced into the vortex flow meter category, and the fieldbus intelligent vortex flowmeter will become the fieldbus system (FCS). One of the important meters.
(4) Research and development of mass vortex flowmeters have been carried out at home and abroad. The vortex flowmeter measures the mass flow from the indirect mass flow meter to the indirect mass flow meter.
In China, the development of the vortex flowmeter is also eye-catching. In the early 1970s, Chongqing Industrial Initiative Instrument Research Institute and Beijing Public Utilities Research Institute took the lead in investigating the development of vortex flowmeters. At the beginning, Hehan Instrument Factory and Kaifeng Instrument Factory also participated in this task. In the mid-1970s, Tianjin Industrial Initiative Instrument Research Institute and the Ministry of Metallurgy Active Research Institute also successively invested in the research and development of vortex flowmeters.
By 1950, Hainan had developed flash thermal (including hot wire detection and thermistor detection method) and ultrasonic vortex flowmeter. Two years later, the stress vortex flowmeter was introduced one after another, followed by strain gauge and vibrating vortex flowmeters.
In the 1950s, China's vortex flowmeters were booming. Stress-type vortex flowmeters became popular. According to statistics from a conference in 1987, there were more than 20 companies engaged in the development and consumption of vortex flowmeters nationwide.
After the mid-1950s, another important aspect of the development of vortex flowmeters in China was the introduction of foreign techniques. Locally qualified companies have introduced mature products such as stress, thermal, vibrating (disc) and differential switched capacitive vortex flowmeters from companies such as Yokogawa, Eastech, E+H, and OVAL of Japan. . At the same time, the country also invested local funds to support enterprises and institutions to develop new products for vortex flowmeters. Chongqing Industrial Initiative Instrument Research Institute has undertaken the research and development of anti-corrosion vortex flowmeter and mass vortex flowmeter for special chemical media; development of another mass-type vortex flowmeter by Beijing Public Utilities Research Institute; The Minister of Sand Mine Research Institute has been engaged in the development of double-onset stress-type vortex flowmeters; the Shanghai Metrology and Testing Institute has developed detection components for low-temperature stress-resistant vortex flowmeters, and these research and development projects have achieved high degree of consequences. Some enterprises in the country also have a special liking for the vortex flowmeter. Through the transfer of skills or collaborative development, the development and consumption of vortex flowmeters are added. According to statistics in 1992, there are more than 30 enterprises and institutions that have developed vortex flowmeters in China, with an annual output of 8,000 to 9000 units.
In the mid-1980s, the basic tasks of the vortex flowmeter were also deepened. In 1987, led by Shanghai Industrial Initiative Instrument Research Institute and China Metrology Science Research Institute, more than 10 units in the country joined, and began to develop industry standards and national metrological verification procedures for vortex flow sensors. The standards and procedures were promulgated in 1989, which played a role in the development, consumption and application of the standard vortex flowmeters in China.
The dry calibration technique of vortex flowmeter has been concerned by various aspects. Beginning in the early 1980s, some experts and scholars in the country realized the vortex flowmeter's ability to dry calibration after analyzing the characteristics of the vortex flowmeter. In the mid-1980s, they jointly throttled the process of standardization installation, proposed the vortex flowmeter dry calibration imagination, and proposed the initiative in the national traffic industry planning meeting. The country adopted the initiative of the experts to put the task into the national “seventh five-year” scientific and technological research plan, led by Chongqing Industrial Initiative Instrument Research Institute, and undertook the task of vortex flowmeter dry calibration experiment. In a few years, a small amount of experimental research was carried out to obtain phased consequences.
After the mid-1990s, China's vortex flowmeters began to expand, multi-parameter detection, and intelligent direction, and achieved good results. Many companies have introduced intelligent products.
The unfolding of anything can not be smooth sailing, and the expansion of the vortex flowmeter is the same. After a sunny day in the middle and early 1980s, from the beginning of the early 1990s, the development of the vortex flowmeter accelerated the pace. Because of the lack of experience in the consumption, design, selection, and application of this new type of instrument, some problems have gradually been exposed in the face of various fields and measurement objects in various industries. For example, practical objects and measurement scale problems, range and measurement pipe diameter selection problems, installation impact problems, stress vortex flowmeters against on-site disturbances (including pipeline vibration and electromagnetic disturbance), low temperature resistance of detection components, vortex flow The problem of adapting the transmitter to the self-control system, as well as product quality problems, product calibration problems, etc. These problems have caused the vortex flowmeter to be used in local field operations, and users have the opinion that the design unit has difficulties and the consumer companies are struggling.
These problems have led some experts to reflect on the design and selection of vortex flowmeters, and to reclaim the design and use the vortex flowmeter to be solemnly shouted. For a period of time, including the export instrument, the design institute and users have a lingering fear. The "vortex street heat" began to cool down, and the vortex flowmeter emerged at a climax.
The emergence of this situation in vortex flowmeters is not a good thing, it is a detailed manifestation of the roundabout nature of things. The emergence of such a situation can attract attention from relevant personnel in various aspects such as development, consumption, design and operation. Development and consumption units should also concentrate on research
Research, dealing with the weak links of vortex flowmeter products. Advance product performance and production quality, product promotion should be more objective; the emergence of this situation, suggesting that design units and users are more serious in the selection and application of products, and enhance communication and collaboration with consumers; The emergence of the product has also led to the evolution of the German style of products, weak local skills, lack of consumer equipment and testing conditions, it is difficult to guarantee the quality of products, enterprises that can not provide quality services for users, and gradually eliminated by the market.
In the 21st century, the vortex flowmeters that have experienced the wind and rain baptism have gradually stepped out of the trough and embarked on the path of bumpy development. With the establishment of the national economy, the application of vortex flowmeters in various categories has gradually expanded. With the advancement of product quality, the standardization of design, selection, installation and operation, the enhancement of pre-sales and post-service, the landing failure rate, the satisfaction of users has improved, and the self-confidence has been restored.
In the mid-to-late 1990s, we also saw a lot of reports and papers on the use of vortex flowmeters in enterprises. Hangzhou moving company prices These articles compare the technical characteristics and skill parameters of the orifice flowmeter and the vortex flowmeter from different aspects, and think that the vortex flowmeter is a flowmeter that is worthy of promotion and has a broad prospect.
Since the early 1990s, smart vortex flowmeters have entered the market. It defeated the lack of conventional vortex flowmeters, and the inherent strengths of vortex flowmeters inherited, making the performance, function and quality of vortex flowmeters a new level. According to the information provided by relevant experts, by the end of 2004, the development and consumption of vortex flowmeters in China has emerged in a new situation. The number of consumer enterprises has exceeded 200 and the annual output has exceeded. 30,000 units. Some provinces (cities) have more than 20 companies that consume and operate vortex flowmeter products.

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