对传统节流装置进行了极大的改进，具有平衡整流的显著特征。 The balanced flowmeter has greatly improved the traditional throttling device, and has the remarkable characteristics of balanced rectification. The traditional throttling device has only one flow aperture, and the fluid loses its ideal state after throttling. The balanced flowmeter has multiple function apertures, which can balance the flow field into an ideal fluid to the maximum extent, thereby reducing the pressure of the differential pressure flowmeter. Give full play to the advantages. The balanced flow meter is suitable for almost all fluid measurement. It is a revolution in fluid measurement technology. At present, the balanced flow meter has been widely used in petroleum, chemical, metallurgy, power, natural gas, water treatment and other industries.
The symmetrical and balanced design of the balanced flow meter reduces the formation of eddy currents and turbulent friction, and reduces the loss of kinetic energy. Under the same operating conditions, compared with the traditional throttling device, the pressure loss is 70% less, which is close to the Venturi tube. This saves a considerable amount of operating costs and is worth a lot of promotion. Can be applied to the measurement of gas, liquid, gas-liquid two-phase, liquid gas, two-way flow, dirty media, slurry.
的技术要求： Technical requirements for balanced flowmeters :
1. Pipe diameter range: DN15 ~ DN3000 2. Accuracy: ± 0.3%, ± 0.5%, ± 1% 3. Requirement of straight pipe section: 0.5D ~ 2D 4. Permanent pressure loss: 1/3 ~ 1/4 of orifice plate 5. Range ratio: 10: 1, suitable working condition data can be wider 6. Repeatability: 0.1% 7. Re range: 200 ~ 107 8. Beta range: 0.25 ~ 0.9
9. Temperature range: The temperature that the metal pipeline can withstand, up to 850 ° C 10. Pressure range: The pressure that the metal pipeline can withstand, up to 42 MPa 11. Dirt resistance: Special design and calculation 12. Can measure bidirectional flow The balanced flowmeter combines the porous rectifier and the measurement orifice plate into one to maximize the balance of the flow field to the ideal state, so as to bring out the advantages of the differential pressure flowmeter. Balanced flowmeter is suitable for almost all fluid measurement. Its processing, manufacturing and installation can be standardized like orifice plates. Verification is also easy to achieve dry standard. It is expected to become a new international standard for throttling devices.
是一种革命性的差压式流量仪表，其工作原理与其他差压式流量计一样，都是基于密封管道中的能量转换原理：在理想流体的情况下管道中的流量与差压的平方根成正比；用测出差压值根据伯努利方程即可计算出管道中的流量。 Balance flow meter is a revolutionary differential pressure flow meter. Its working principle is the same as that of other differential pressure flow meters. It is based on the principle of energy conversion in sealed pipelines. The square root of the pressure is proportional; the measured flow pressure can be used to calculate the flow rate in the pipeline according to the Bernoulli equation. The balanced flow sensor is a porous disc throttle rectifier, which is installed on the cross section of the pipeline. The size and distribution of each hole are customized based on special formulas and test data, called function holes. When the fluid passes through the function holes of the disc, the fluid will be balanced and rectified, and the vortex will be minimized to form an approximately ideal fluid. Through the pressure taking device, a stable differential pressure signal can be obtained. The volume flow rate is calculated according to Bernoulli's equation, Mass Flow