I. Overview
With the continuous increase in the demand for industrial salt, salt-making units, mainly affiliated with China National Salt Corporation, have undergone technological transformation or expansion. The recovery of the salt industry has brought more opportunities for the application of thermal instrumentation. challenge.
The power plant and salt making plant of a large-scale salt production company in Sichuan are more than 2,000 meters apart. The steam transmission pipeline is too long. The original orifice flowmeter was used, but the measurement accuracy and pressure loss have a great influence on the measurement and transmission of the steam amount, resulting in the system The amount of gas used in the salt workshop and the outlet volume of the power plant are greatly different; at the same time, the outflow measured by the orifice plate and the theoretically calculated outflow also have large errors, which seriously affects the economic efficiency of the normal gas and power plant in the salt plant. .
Second, the measurement program
In order to solve the above measurement problems, the company's technical staff through the evaluation of a number of flow meter manufacturers to provide the program, at the same time to investigate the application of the product, the final determination of the Jinba Jindi Instrument Co., Ltd. Delta Bar Flowmeter. The Delta Bar Flow Meter is an aerodynamically-based engineering structure design that is a sensing element with unparalleled precision, efficiency, and reliability. An average speed is produced according to the differential pressure principle. Tube flow meter. The flow meter is a plug-in working method that can be used for flow measurement of gases, liquids, and steam. It has the advantages of simple structure, small pressure loss, convenient installation and maintenance, etc. It is a high-precision flow sensor, can be used under rather harsh conditions, and can maintain good measurement performance.
According to the user's on-site process conditions, in order to accurately measure the boiler's main steam flow and saturated steam flow, we installed a total of 18 delta bar flowmeters in this section to replace the previous nozzle and orifice plate measurement devices.
Third, the installation and application
After careful selection and careful installation and commissioning by engineering and technical personnel, Delta Bar Flowmeter was successfully put into operation. The measurement point process parameters are as follows:
The batch flow meter has been put into operation for about a year and a half. Now the work is working well and it fully demonstrates the following excellent performance.
1. Easy to install. When the flow meter is installed, only a small hole with a diameter of about 30 mm is drilled on the measuring pipe. The mounting of the bracket is used to complete the installation of the meter. The whole installation process does not exceed one hour, and it is especially suitable for technological transformation projects.
2. The measurement is accurate and stable. The steam measurement problem has been plaguing the power plant and the salt plant. It has become a chronic problem. The application of the Verabar flowmeter completely solves the problem of unstable steam volume and inaccurate metering in the salt plant.
3. Small pressure loss is another outstanding advantage of this product. The pressure loss of this product is only 5 to 10% of the orifice flowmeter, which is almost negligible. As the pressure loss is small, the boiler can increase the steam production and also make the operation of the boiler and the steam transmission pipeline more safe and reliable.
Fourth, the conclusion
Since the company adopted Delta Bar Flowmeter to operate, excellent product performance and service quality have been fully verified. At the same time, it has also been widely used in other salt industry. Practice has proved that the application of delta bar flowmeter in the salt industry is feasible, has played a catalytic role in improving the level of steam metering management, but also created a good economic benefits for the enterprise.
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