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1. Research object of pipeline fluid measurement
Pipeline fluid measurement includes the measurement of oil products and natural gas transported through pipelines. Both of these fluid measurements are currently measured in units of volume. The measurement of early oil products was based on weight. In the early 1940s, volumetric flow meters with a diameter of 100 millimeters began to be used on finished oil pipelines. Later on, various types of volumetric flow meters emerged, such as scraper flow meters and waist wheel flow meters. In the 1960s, turbine flow meters emerged, which were small in size, had a wide range of flow rates with vibration, and could maintain high accuracy. They were applied to the measurement of light oil products. In recent years, non immersed ultrasonic flow meters have been increasingly widely used in pipeline fluid measurement. With the improvement of flow meters, the calibration devices for flow meters that are compatible with them have also continued to develop, such as the mechanical bidirectional straight tube volume tube calibration device that appeared in the 1960s; Subsequently, one-way and two-way U-shaped volume tube calibration devices emerged, achieving higher accuracy in flow meter calibration. The measurement of natural gas pipelines began in the 1930s using differential pressure orifice flow meters, which have been in use ever since. Turbine flow meters can adapt to changes in natural gas pipeline throughput and have also been applied in recent years.
2. What is the name of flow detection equipment used on industrial pipelines?
Flow detection equipment on industrial pipelines is collectively referred to as flow meters (flow meters), which are divided into
1. Common types of flow meters suitable for industrial pipelines (1) Differential pressure flow meters.
Based on the Bernoulli principle, the fluid flow rate is calculated by detecting the pressure difference before and after the throttling element. Typical products include orifice flow meters, Venturi tube flow meters, and nozzle flow meters. It is one of the most widely used flow detection devices in industrial pipelines, suitable for clean gas, liquid, and steam media. （2） Electromagnetic flowmeter 1 Designed based on Faradays law of electromagnetic induction, it can only measure the flow rate of conductive media without pressure loss caused by throttling components, and is suitable for pipeline flow detection of conductive fluids such as sewage, acid and alkali liquids, and slurries. (Car shortage cleaning three) Vortex flowmeter 1 Based on the principle of fluid vibration, the flow rate value is obtained by converting the vortex frequency generated by the vortex generator. It is suitable for detecting large diameter pipelines of gases, liquids, and steam, with stable accuracy and low pressure loss. （4） Turbine flowmeter 1 Based on the principle of fluid driven turbine rotation, the flow rate is calculated by detecting the turbine speed. It is suitable for clean liquid and gas media with high accuracy and is commonly used for precision measurement of small pipelines. （5） Positive displacement flowmeter 1 By repeatedly measuring the fluid volume through a fixed volume chamber, typical products such as elliptical gear flow meters and waist wheel flow meters are suitable for precise flow measurement of high viscosity media su
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