The sewage flow meter scale in reducing use of the measurement of water supply

Abstract: the sewage flow meter scale in water reducing use of the measurement information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. The choice of water meters, to ensure water supply, accurate measurement and construction cost accounting is very important. Through practical operation and observation contrast in recent years, we believe that the sewage flow meter is better than that of other measuring instrument. The author combined with the practical work of municipal water supply connection. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the sewage flow meter scale in use the diameter of the measurement of water supply for details. The choice of water meters, to ensure water supply, accurate measurement and construction cost accounting is very important. Through practical operation and observation contrast in recent years, we believe that the sewage flow meter is better than that of other measuring instrument. The author combined with the practical work of engineering design and construction of municipal water supply, sewage flow meter group design table size selection of some special case to talk about something specific. We found in the design of water connection to users, according to user's water pipe diameter or table size, some with different water properties should be considered. Such as development zone, a new medical instrument factory, divided into production in the use of water, domestic water and fire water, including office, production zui big water consumption for 7. 62 m3 / h, unforeseen water by 15% plan to 1. 14 m3 / h, and air conditioning supplementary water 5 m3 / h, total zui large water consumption is 14. 76 m3 / h。 According to the production and living water consumption, a group DN80 meter should be installed, and tube flow velocity is zero at this time. 83m/s。 According to the fire department approval, the enterprise workshop of fire risk for class c, need to install indoor and outdoor fire hydrant. Design institute of design is to build a 200 m3 fire pool, water content meet the indoor fire water consumption. Outdoor fire water are provided by municipal pipe straight outdoor ring of water supply pipe network. Fire hydrant water usage: outdoor fire hydrant water 30 l/s; Indoor fire hydrant water 20 l/s. According to the requirements for fire rules and regulations, shall be installed a set of 6 meter group. Production, living and fire water if a group 6 sewage flow meter, on the basis of fire in the specification when production, living water zui big water still have to guarantee the principle of fire water pipe network fire, the fire control water quantity and water pressure meet the requirements. Fire water only in the use of fire, when the fire control system don't start at ordinary times, tube is mainly production, living water supply enterprises, tube flow velocity is zero at this time. 22m/s< 0. 3 m/s, can't meet the requirements of sewage flow meter to the velocity range, ie not water consumption of production enterprises implement accurate measurement, it is reluctant to water supply enterprises. This caused by water tube flow velocity mismatch and cases need to users to install two groups of measuring instrument is often encountered in the practical work. Our solution is: 1. When the municipal water supply tubing diameter pipes, pipe fittings and valves, share after the parameters selected according to the system, select sensor is smaller than connection pipe diameter size of sewage flow meter in diameter, diameter, table size, large diameter and small table size, reducer added before and after installing a connection sensors. As a result in part of the local sewage flowmeter can improve the flow velocity, meet the requirements of the instrument for velocity range, makes the water supply enterprise in the water can be under the premise of accurate measuring dual function, save companies a set of metering device of the cost of investment. Such as the water meter fabric become medical instrument factory installed above pipes and gate valves, check valves diameter 6, sewage flowmeter metering device for the DN100, sensor part of the flow velocity is zero at this time. 47m/s> 0. 3m/s。 2. Reducer to meet the requirements of taper. Inlet and outlet of sewage flowmeter of straight section length requirement, reducer, added before and after the sensor to be seen as part of a straight pipe, should be consistent with the product on the sensor before and after the section of divergent or convergent cone Angle is less than 15 & deg; Requirements. So it must be reducer center cone Angle calculation, such as the entrance and exit the DN100 sewage flowmeter, according to the atlas of feed water and drainage standard making 6 & times; 100 reducer, after the center cone Angle calculation for 11. 74° < 15° 。 3. Reducer can't meet the requirement of taper, must be custom-made extended divergent or reducing pipe. Such as development zone based on a large foreign enterprises to select DN600 sewage flow meter in the original design of the water, the enterprise to the center of water supply for the water meter group construction cost, and make water meter room with the requirement of sewage flow meter straight pipe is too narrow, we consider using small primary and secondary pipe diameter size selection of sewage flow meter, water flow speed in the allowed range. According to the standard atlas reducer size calculation, DN600 & times; 400 reducer center cone Angle to 20. 42° DN600× 500 reducer center cone Angle is 16. 03° , not less than 15 & deg; And do not meet the requirements of product design. Must therefore be custom-made the mark divergent or reducing pipe, extended reducing the length of the part, reduce center cone Angle and taper requirements within. In short, the sewage flow meter used for measurement of water supply, due to its sensors have velocity requirements, but the velocity and the characteristics of wide range, designers can according to user's water consumption and the scene actual situation, make some flexible changes, it saves water meter set of investment, and measuring instrument operation in good working condition. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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