Shanghai Yichuan Turbine Flow MeterIt is a speed type instrument that has the characteristics of low pressure loss, high accuracy, low starting flow rate, good seismic and anti pulsation fluidity, wide range and easy maintenance. Turbine flowmeter is a device that places a turbine in the measured fluid. When gas enters the flowmeter, it is rectified and accelerated by a special structure rectifier. Within a certain flow range, the angular velocity of the turbine is proportional to the flow rate. The electromagnetic induction principle is used to induce a pulse signal proportional to the volume flow rate of the fluid. After being shaped by a preamplifier, the actual flow rate is obtained and displayed on the LCD screen. If the signals detected by the same temperature and pressure sensors are input into the intelligent flow meter for calculation and processing, the flow rate under standard conditions will be obtained and displayed on the LCD screen.
The Shanghai Yichuan turbine flowmeter is a type of impeller instrument with a relatively simple working principle. A turbine is placed in the center of the pipeline of the turbine flowmeter body, and both ends are supported by bearings When the fluid passes through the pipeline, it impacts the turbine blades, generating a driving torque on the turbine, causing it to overcome friction torque and fluid resistance torque and rotate. Within a certain flow range, for a certain viscosity of the fluid medium, the rotational angular velocity of the turbine is proportional to the fluid flow velocity. Thus, the fluid velocity can be obtained by the rotational angular velocity of the turbine, and the fluid flow rate through the pipeline can be calculated. At the same time, the speed of the turbine is detected through a sensing coil installed outside the casing. When the turbine blades cut the magnetic field lines generated by the magnetic steel inside the shell, it will cause changes in the magnetic flux in the sensing coil. The sensing coil sends the detected magnetic flux periodic change signal to the preamplifier, amplifies and shapes the signal, generates a pulse signal proportional to the flow rate, and sends it to the unit conversion and flow integration circuit to obtain and display the accumulated flow value; At the same time, the pulse signal is also sent to the frequency current conversion circuit, which converts the pulse signal into an analog current quantity and indicates the instantaneous flow rate value.
Shanghai Yichuan turbine flowmeter is a type of velocity flowmeter, also known as turbine flowmeter in China according to its transliteration. Turbine flow meters are divided into gas turbine flow meters and liquid turbine flow meters according to the different measuring media. Among various flow meters, turbine flow meters are the products with high repeatability and the best accuracy. Such as simple structure, few processed parts, light weight, easy maintenance, high flow capacity (the same caliber can pass through a large flow rate), and adaptability to high parameters (high temperature, high pressure, and low temperature). Turbine flowmeters are widely used for measuring objects such as petroleum, organic liquids, inorganic liquids, liquefied gas, natural gas, coal gas, and low-temperature fluids. It is widely used for trade settlement in the transportation and gathering stations of liquefied petroleum gas, refined oil, and light crude oil abroad, as well as in the initial and final stations of large crude oil pipelines.