Multi-Point Multi-Throat Wind Measurement Device

Product Description:

HWHL multi-point multi-throat runoff measuring device is a new type flow meter successfully launched by our company after several tests and applications on the basis of years of experience and achievements in flow measuring instrument research and development.  The flow measuring device is a differential pressure intelligent flowmeter based on Berhard equation, using modern aviation technology ---- aerodynamics theory and fluid mechanics theory to realize single point and multi-point high-precision measurement.  It is widely used in thermal power plants, iron and steel plants, chemical plants, large, medium and small pipelines at room temperature or high temperature gas (air, steam, natural gas, gas, flue gas) flow measurement, especially suitable for thermal power plants primary wind, secondary wind flow measurement.

Our company's electromagnetic flowmeter, precession vortex flowmeter, thermal gas mass flowmeter and other products are very high measurement accuracy, balance flowmeter, nozzle flowmeter are often used, our products are also very professional.

measurement principle :

According to the principle of fluid mechanics, when the fluid passes through the laryngeal diameter tube, the flow direction of the throat is rectified and amplified through the diffusion Angle of the contraction section and the diffusion suction of the diffusion Angle on both sides, which greatly improves the laryngeal flow rate and significantly reduces the static pressure of the larynx, thus amplifying the static pressure difference measured between the full pressure hole and the larynx.  The greater the flow rate, the greater the differential pressure. By measuring the differential pressure, the pipeline flow rate can be measured.  

Under working conditions, the mathematical model of the flow measuring device is as follows :CECE*S_2p1AP*S2AP/p1(1-B4)(1-B4)  

Where: Qm and QV1 are mass flow rate (kg/s) and volume flow rate (m/s) respectively;  

C first-class output coefficient;  

e - Coefficient of expansibility  

S - effective circulation area, (m);  

B to diameter ratio, B=d/D;

Density of the measured flow body, kg/m;  

A, P, differential pressure, Pa.