| Customization: | Available |
|---|---|
| Accuracy: | ±0.2-0.5% |
| Main Application: | Water, Wastewater, Diesel Fuel, Fuel Oil, Conductive Liquid |
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Accurate measurement of fluid flow rate is crucial in many aspects of modern industrial production and scientific research experiments. From the transportation and measurement of crude oil and chemical raw materials in the petrochemical industry, to the control of natural gas and water flow in the energy industry, to the determination of wastewater discharge flow in environmental monitoring, reliable flow measurement technology is indispensable. As a classic and efficient speed flow measurement instrument, the turbine flowmeter stands out among many flow measurement instruments due to its high precision, wide range ratio, and fast response, becoming the "precision ruler" for industrial flow measurement.
The working principle of a turbine flowmeter is based on fluid mechanics and electromagnetic induction principles. When the measured fluid flows into the turbine flowmeter, the kinetic energy of the fluid drives the turbine blades to rotate. The speed of the turbine is linearly related to the average flow velocity of the fluid, which is directly related to the flow rate. The rotation of the turbine will periodically change the magnetic resistance value in the magneto electric induction system, causing the magnetic flux in the detection coil to undergo periodic changes, thereby generating a series of electrical pulse signals proportional to the turbine speed. By counting and processing these electrical pulse signals, the fluid flow rate can be accurately calculated. For example, in oil pipelines, turbine flow meters can monitor the real-time flow rate of crude oil and convert the flow information into electrical pulse signals to be transmitted to the control system, so that personnel can adjust the conveying speed and flow rate in a timely manner.
The structure of a turbine flowmeter mainly consists of a housing, impeller components, bearings, preamplifiers, and other parts. The shell provides mechanical support and protection for the entire instrument, and its internal design conforms to the principles of fluid dynamics, which can guide the fluid to flow smoothly through the impeller and reduce the impact of fluid disturbance on measurement accuracy; The impeller component is the core component of a turbine flowmeter, consisting of turbine blades and a shaft. The shape, size, and quantity of the blades directly affect the performance of the flowmeter. The design of the blades needs to take into account fluid dynamic characteristics and mechanical strength to ensure accurate sensing of fluid velocity at different flow rates; The bearing supports the rotation of the impeller and requires low friction, high wear resistance, and good sealing to ensure that the impeller can rotate stably and flexibly for a long time; The preamplifier is responsible for amplifying and shaping the weak electrical signals generated by the magneto electric induction system, improving the signal-to-noise ratio of the signal, and facilitating subsequent signal processing and transmission.
The application scenarios of turbine flow meters are very extensive. In the oil and gas industry, turbine flow meters play an indispensable role in measuring crude oil production at oilfield wellheads, controlling flow rates during the transportation and processing of various oil products in refineries, long-distance transportation and trade settlement of natural gas. In the chemical industry, turbine flow meters can be used to measure the flow rate of various corrosive and high viscosity chemical raw materials and products, providing accurate data support for precise control and cost accounting of chemical production processes. In the field of water conservancy and hydropower, it can monitor water flow, help optimize the efficiency of hydropower generation, and can also be used in urban water supply systems to achieve accurate measurement and management of water consumption. In addition, in industries with high hygiene requirements such as food and beverage, pharmaceuticals, etc., turbine flow meters also have corresponding hygiene products to meet the special needs of flow measurement in these industries.
Compared with other types of flow measurement instruments, turbine flow meters have significant advantages. Firstly, it has high measurement accuracy. Generally, its measurement accuracy can reach ± 0.5% to ± 1%. With careful calibration and good maintenance, the accuracy can even be higher, which can meet the high-precision requirements of most industrial production for flow measurement; Secondly, the range ratio of the turbine flowmeter is wide, and the measurable flow range span is large, which can adapt to flow changes under different working conditions and accurately measure from small flow to large flow; Furthermore, its response speed is fast, able to quickly capture instantaneous changes in traffic and output real-time traffic data, which is crucial for industrial processes that require real-time monitoring and rapid adjustment of traffic; In addition, the turbine flowmeter outputs standard electrical pulse signals, which are easy to connect with automation control systems such as computers and PLCs to achieve automatic measurement, display, recording, and control of flow. However, turbine flow meters also have some limitations. It requires high cleanliness of the fluid, and impurities, particles, etc. in the fluid are prone to wear on the impeller and bearings, affecting the service life and measurement accuracy of the flowmeter. Therefore, a filter is usually installed in front of the flowmeter; At the same time, turbine flow meters are greatly affected by fluid properties. When parameters such as fluid density and viscosity change, they will have a certain impact on the measurement results and require necessary compensation and correction.
With the continuous advancement of technology, turbine flow meters are also constantly developing and innovating. In terms of materials, the application of new wear-resistant and corrosion-resistant materials has improved the performance and service life of key components of turbine flow meters; In terms of intelligence, the integration of microprocessors and advanced signal processing algorithms enables the turbine flowmeter to have functions such as automatic calibration, fault diagnosis, data storage, and remote communication, greatly improving the convenience and reliability of instrument use; In terms of measurement technology, the research and application of multi-channel measurement technology, non-contact detection technology, etc. have further expanded the application scope and measurement performance of turbine flowmeters. In the future, turbine flow meters will develop towards higher precision, intelligence, and adaptability to complex working conditions to meet the constantly upgrading and diversified needs of industrial production.
| Product | Turbine flowmeter |
| Model | MEJ-LWGY |
| Diameter Nominal | DN4~DN2000 |
| Nominal Pressure | 1.0MPa~6.3MPa |
| Accuracy | 0.5%R, 1.0%R |
| Medium viscosity | Less than 5×10-6m2/s |
| (for the liquid with >5×10-6m2/s, | |
| the flowermeter needs to be calibrated before using) | |
| Medium Temperature | -20ºC~+120ºC |
| Power Supply | 3.6V lithium battery; 12VDC; 24VDC |
| Output Signal | Pulse, 4-20mA, RS485 Modbus |
| Ingress protection | IP65 |
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