The requirements of orifice flowmeter for medium?Xi'an Huaheng Instrument Introduction:Orifice plate flowmeter,also known as differential pressure flowmeter,is composed of primary detection parts(throttle parts)and secondary devices(differential pressure transmitter and flow indicator),which is widely used in gas,steam and liquid flow measurement.

 

　　標準孔板可以采用角接取壓（包括環(huán)室取壓和鉆孔取壓）、法蘭取壓或D－D/2取壓三種取壓方式。

 

　　Standard orifice plate can adopt angular connection pressure(including ring chamber pressure and borehole pressure),flange pressure or D-D/2 pressure.

 

　　測量口徑DN50-DN1200，壓力0-16MPa，溫度0-550℃。

 

　　Measuring diameter DN50-DN1200,pressure 0-16MPa,temperature 0-550 C.

 

　　介質(zhì):煤氣、天然氣(包括含濕度5%以下)、各種碳氫化合物(包括含濕的HC氣體)、各種稀有氣體(氫、氦、氬、氧、氮等)、氯氣、濕的氯化物氣體、空氣(包括含水、含SiO2粒子以及含其他懸浮物的空氣)、煙道氣、飽和蒸汽(含汽、水兩相流)、過熱蒸汽、水等。幾乎涵蓋了所有流動性介質(zhì)。

 

　　Medium:gas,natural gas(including humidity below 5%),hydrocarbons(including wet HC gas),rare gases(hydrogen,helium,argon,oxygen,nitrogen,etc.),chlorine,wet chloride gas,air(including water,SiO 2 particles and air containing other suspended matter),flue gas,saturated steam(steam,water two-phase flow),superheated steam,water,etc.Almost all liquidity media are covered.

 

　　孔板流量計按國標規(guī)定進行設(shè)計、制造和檢定的標準孔板無需實流標定，精度高、結(jié)構(gòu)簡單、制造成本低，但壓力損失在所有標準節(jié)流裝置中最大，不適用于要求壓力損失小的情況，標準孔板廣泛用于石油、化工、冶金、電力等行業(yè)。

 

　　The orifice plate flowmeter designed,manufactured and calibrated according to the national standard does not need real-flow calibration.It has high accuracy,simple structure and low manufacturing cost.However,the pressure loss is the largest in all standard throttling devices,and it is not suitable for situations requiring low pressure loss.The standard orifice plate is widely used in petroleum,chemical,metallurgical,power and other industries.