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减少智能水表的计量检定误差小课堂
作者: manager 来源:www.sdlyxqyb.com 浏览: 发布日期:2019-11-08

水表厂家供水单位在为用户挑选水表时,水表厂首先要进行科学的估算,水表厂结合用户用水量选择与额定流量相匹配的水表。用户用水量不同,用水幅度也不一致,因而一般为用水量波动稍大点的用户配备水平旋翼式水表,为用水幅度波动不太大的配置过水能力较大而其水头损失较轻的水平螺翼式水表。

When the water supply unit of the water meter manufacturer chooses the water meter for the user, the water meter manufacturer should first make a scientific estimation. The water meter manufacturer chooses the water meter matching the rated flow rate according to the user's water consumption. Users have different water consumption and different water consumption ranges, so they usually equip horizontal rotorcraft water meters for users whose water consumption fluctuation is slightly larger, and horizontal rotorcraft water meters with larger overwater capacity and lighter head loss for users whose water consumption fluctuation is not too large.

水平螺翼式水表同旋翼式相比较而言,前者流量性能更优于后者。而为用水量波动异常大的一些场所配备复式水表;一些被水淹没概率较高灰尘较多的地方配用湿式水表;而一些特定地区,其管道里实际流量远超过水平螺翼式水表30%的公称流量,就配用水平翼式水表。 水表厂家水表的设计安装需要符合水表的工作要求。

The flow performance of horizontal screw-wing water meter is better than that of rotary-wing water meter. In some places where water consumption fluctuates abnormally, double water meters are equipped; wet water meters are equipped in places where water inundation probability is high and dust is high; and in some specific areas, the actual flow in the pipeline is much higher than the nominal flow of 30% of the horizontal spiral-wing water meters, the horizontal-wing water meters are equipped. The design and installation of water meter manufacturer need to meet the working requirements of water meter.

水表厂为了减少水表的计量误差,水表厂在设计安装之时需要注意几点:水表必须安装在管道的直线管段上;尽量将水表水平安装;不要将水表安装在震动强烈或水锤涉及到的地方尽量避免将水表设计安装在松软地段;可在管路上安装小型“水锤”消除器,避免阀门或水龙头的启闭造成“水锤”;管道安装结束之后,应将管道内的杂物冲洗干净然后再进行水表的安装;水表安装或管道维修后,应完全开启表前阀门,通过排气阀,排空管道内的空气;水表厂家提示应尽量选用内壁光滑、内壁涂衬和水力条件好的管材,减少内壁结垢现象。

In order to reduce the measurement errors of water meters in water meter factories, several points should be paid attention to when designing and installing water meters: water meters must be installed in the straight pipeline section of pipelines; water meters should be installed horizontally as far as possible; water meters should not be installed in places where vibration is strong or water hammer is involved; water meters should be designed to avoid installing in soft areas as far as possible; water meters can be installed in pipelines. Install a small "water hammer" eliminator to avoid the "water hammer" caused by the opening and closing of the valve or faucet; after the installation of the pipeline, the debris in the pipeline should be washed out and then the water meter installation; after the installation of the water meter or the maintenance of the pipeline, the valve in front of the meter should be completely opened, and the air in the pipeline should be exhausted through the exhaust valve; and the water meter plant It is suggested that pipes with smooth inner wall, good inner lining and hydraulic conditions should be selected as far as possible to reduce scaling on the inner wall.

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