Tunnel grouting electromagnetic flowmeter application

Abstract: the tunnel grouting electromagnetic flowmeter application information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Municipal engineering haicang submarine tunnel choose multiple sets of electromagnetic flowmeter, dedicated to the tunnel grouting at present, Beijing sichuan flowmeter has been mainly used in municipal engineering in city: haicang submarine tunnel, subway line no. 3 WuYuan bay tunnel, lian yue TieShiBaJu, railway tunnel, the tunnel,. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a tunnel grouting electromagnetic flowmeter applied article details. Municipal engineering haicang submarine tunnel choose superfamily real Chinese shares many sets of electromagnetic flowmeter, dedicated to the tunnel grouting. Grouting in the construction process of grouting and water flow measurement is very important. Especially the use of liquid flow meter has its special requirements, such as easy to clean frequently, and can withstand the grouting and particles of friction in bad environment. In flow meter products, the advantages of the electromagnetic flowmeter is not affected by the fluid temperature, pressure, density and viscosity, the effect of internal flow is smooth, electrical measurement directly, high measurement precision, fast response speed. Testing part not activity part of it, there will be no dripping phenomenon, lining can be made from teflon and alumina ceramic, strong corrosion resistance. In recent years, it has become flow measurement instrument of choice in the grouting engineering. Tunnel grouting application note 1 electromagnetic flowmeter to measure the influence of the amount of mud adhered to the pipeline and processing time after grouting, the residue slurry electromagnetic flowmeter measurement pipe shall be removed in a timely manner, otherwise the slurry prone to change measuring degree of pipeline. Electromagnetic flowmeter measurement pipe and connection of grouting cement was even blocked. Electromagnetic flowmeter measurement tube of adhesive layer can lead to other relative error. The electrical conductivity of cement layer is extremely low. The greater the thickness of the attachment, the bigger the error. 2 bubbles in the medium and the influence of processing due to the process or the medium itself, measured liquid usually contain a lot of bubbles. When bubbles through the electrode surface, electrode surface friction process, leading to the peak pulse interference potential value is greater than normal. Usually, electromagnetic flow converter cannot handle such interference effectively, lead to unstable measurement values. Therefore, we should consider the installation position of electromagnetic flowmeter, in order to prevent the bubble. Normally, should be installed at pump discharge side, best vertical installation. Slurry flow from down to up. Level when installation, please make the electrode axis parallel to the horizontal line, and not perpendicular to the horizontal line, because the bottom electrode is covered by sediment, easily the top electrode is easy to accidentally bubbles in liquid. The electrode surface. 3 bad construction site environment and deal with most of the time, the influence of grouting construction site environment is relatively poor, such as ( Continued on page 131) ( Continued on page 108) Such as high temperature, high humidity and high dust, time condensed water and dust is easy to accumulate in the EMF junction box, or through a joint of poor sealing surface infiltration EMF shell, this will lead to the EMF converter input circuit impedance drops and weaken the traffic. Signal is sent to the amplifier; Or damage the insulation of the drive circuit and signal circuit, lead to severe EMF of failure. In order to avoid such failures, junction box can fill the insulating material. When maintenance and debugging the EMF, the water must be avoided, keep the junction box dry clean, and avoid in the process of using immersed in water or mud. At present, China is in a new upsurge of construction. Is a large amount of cement grouting. Dynamic measuring cement grouting quantity accurately is very important. With its unique advantages, has become the electromagnetic electromotive force in grouting project of choice for the flow measurement instruments, and can be widely used. Compared with using a ruler, the accuracy of the electromagnetic flowmeter is used to measure the amount of mud is greatly increased, avoids many man-made factors, and to ensure the data authenticity and played an important role to ensure project quality. However, before the use should check and examine the EMF, in order to ensure to achieve the required accuracy. Below is the electromagnetic flowmeter grouting in tunnel engineering application cases. “ At present, the main tunnel has passed the shaft into the tunnel construction, only 50 meters from the nearest waters. ” Station in xiamen western channel tunnel of the left line of haishu side ( Haishu tunnel) The excavation site, the site staff said loudly in the roar of the machines, and other By the end of this year, the construction of the west two channels will be officially into the sea, and gradually digging to the bottom of the sea 72 meters deep. ” Tunnel grouting construction unit electromagnetic flowmeter ( TieShiBaJu) In xiamen west two channel construction site, large machines roar, bring the earth come and go. Workers and machine cooperation reinforcement to dig the tunnel, it is a busy scene.

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mass flow meter can be applied in different ways as v shape coriolis mass flow meter.