LNG低温潜液泵测试平台配置及控制系统研究

CONFIGURATION OF THE LNG CRYOGENIC SUBMERSIBLE PUMP TESTING PLATFORM AND RESEARCH OF THE CONTROL SYSTEM

随着液化天然气(LNG)产业的迅猛发展,LNG潜液泵应用越来越多,对其参数进行准确测试和评价,对判断是否引进国外先进的LNG潜液泵和LNG潜液泵的国产化推广具有重要的意义。设计了一套LNG潜液泵测试平台,对影响平台测试精度的因素进行了分析,并在测试平台设计、仪器仪表选型及控制系统软硬件设计中采取了相应措施来提高测试精度。经过与国外LNG潜液泵及现有LNG测试平台对比测试显示,该平台具有较高的稳定性和测量精度,可广泛应用于LNG潜液泵的设计、改进及选型,也可用于第三方检测机构对运营中LNG潜液泵进行抽检及对中标LNG潜液泵进行技术参数评估【1】。

With the rapid development of LNG industry,the application of LNG submersible pump has increased considerably.Therefore,accurate test and evaluation of its parameters is of great significance for the estimation of introducing foreign advanced LNG submersible pump and popularizing domestic LNG submersible pump.A set of LNG submersible pump test platform is designed.The factors affecting the test accuracy are analyzed.In addition,corresponding measures are taken in the test of hardware and software platform design,selection of instrumentation and control system design to improve the test precision.After comparison with foreign LNG submersible pump and existing LNG test platform,it is shown that this platform has high stability and accuracy.It can be widely used in the design,improvement and selection of LNG submersible pump.It can also be used for the third party testing agencies to test the LNG submersible pump and evaluate technical parameters for the chosen LNG submersible pump.