CAJ | 학술논문

电磁流量计在水煤浆这类固液两相流的测量中应用广泛。但是，煤浆泵的脉动流量、泵出口压力、煤浆颗粒、传感器极化电压都会导致电磁流量计的测量结果产生波动，增加测量结果的不确定性。本文从影响水煤浆测量的主要因素出发，探讨了如何在安装和生产工艺上减少流量波动、降低干扰。为了得到稳定可靠的流量数据用于控制，需要选取合适的浆液型电磁流量计。根据水煤浆现场反馈数据，重庆川仪自动化股份有限公司生产的浆液型电磁流量计测量结果波动率和动态响应时间均小于相同规格的国外电磁流量计，具有较好的测量稳定性和动态响应速度。因此，本文对重庆川仪自动化股份有限公司生产的电磁流量计的励磁控制方案、信号处理方法和系统研制进行了分析和介绍，并给出了该表和日本东芝表同时测量纸浆浆液、水煤浆的实验结果，再次证明了其可靠性和有效性。
전자류량계재수매장저류고액량상류적측량중응용엄범。단시，매장빙적맥동류량、빙출구압력、매장과립、전감기겁화전압도회도치전자류량계적측량결과산생파동，증가측량결과적불학정성。본문종영향수매장측량적주요인소출발，탐토료여하재안장화생산공예상감소류량파동、강저간우。위료득도은정가고적류량수거용우공제，수요선취합괄적장액형전자류량계。근거수매장현장반궤수거，중경천의자동화고빈유한공사생산적장액형전자류량계측량결과파동솔화동태향응시간균소우상동규격적국외전자류량계，구유교호적측량은정성화동태향응속도。인차，본문대중경천의자동화고빈유한공사생산적전자류량계적려자공제방안、신호처리방법화계통연제진행료분석화개소，병급출료해표화일본동지표동시측량지장장액、수매장적실험결과，재차증명료기가고성화유효성。
Electromagnetic flowmeter(EMF) is widely used in slurry flow measurement such as coal water slurry(CWS). Howev-er, its measurement uncertainty will increase with fluctuation from EMF, which is caused by influences as pulsation flow from coal pump, pump outlet pressure, coal slurry particles and polarization voltage of EMF sensor. Considering main factors affecting CWS measurement, the paper discusses the methods to reduce flow fluctuations and interferences during installation process and produc-tion process. To obtain the stable and reliable flow volume into process control, the appropriate slurry-type EMF need to be selected. According to data from CWS industry process, the slurry-type EMF from Sichuan Instrument shows better measurement stability and faster dynamic response speed, with respect to another foreign type EMF. So the paper introduces and describes the excitation control method、slurry signal processing method and system design of Sichuan Instrument’s slurry-type EMF. And experiment re-sults of pulp slurry and CSW are presented for Sichuan Instrument’s slurry-type EMF and Toshiba’s slurry-type EMF in the same measurement condition, which further proves that Sichuan Instrument’s slurry-type EMF is reliable and valid.