The Study Of A New Type Of Plug-in Measurer Device

The research and development method of a new plug-in flow meter is illustrated in this dissertation. Based on the principle of pressure drop and plug-in mounting, using the integrated research method of CFD numerical simulation and experiment, we innovatively designed the new type of flow meter. This type of flow meter successfully solves the problem of large pressure drop and bulky configuration of the fully-developed orifice meter, and has more promising prospect in engineering application with other plug-in flow meter.At first, we do the massive CFD computation with RNG k-e turbulent model to choose the three types of the model. A test-bed with high precision is established. Equipped with ultrasonic flow meter to measure flux and high-precision pressure senses of different ranges to test the different pressure, We got the experimental dates of the new plug-in flow meter with different velocity of flow by simulating the real flow of water pipe network system. To compare the dates, we found that there was a deviation between the CFD and experimental results, however, this deviation is within the engineering tolerance.The numerical simulations and experimental data coincide well. This shows that it's feasible and effective to design and optimize the flow meter device by CFD numerical simulation. The new type of plug-in flow meter designed in the paper has a wider range, lower pressure lose and more stability.The new type of the plug-in flow meter researched by the paper can be applied to engineering practice after being calibrated.