| 1. | Method for continuous sampling of liquefied natural gas in transfer pipelines
液化天然气的输送管道连续取样方法 |
| 2. | Research on protection of water hammer in long - distance pressurized water transfer pipeline project
长距离压力输水工程水锤防护研究 |
| 3. | Above all , finishing the technologic research for detecting leak on the oil and gas gathering and transferring pipeline
完成了油气集输管线泄漏监测技术研究。实际结果与理论分析相符合。 |
| 4. | An 8 - mile long tunnel from tai po tau to sha tin . the lower shing mun reservoir which would have a capacity of 950 , 000 , 000 gallons . 3 major transfer pipelines of diameter 48 to 54 inches , from tai po to sha tin
5亿加仑的下城门水塘、三条直径48 54寸由大埔往沙田的双程隧道、滤水能力最高可达1 |
| 5. | The leak detection system of detecting leak on the oil and gas gathering and transferring pipeline where the pressure sensor is the preference is researched through the principle of negative pressure and the technology of digital signal
优选压力传感器，利用负压波原理并采用数字信号处理技术研制了原油集输管线泄漏检测系统。 |
| 6. | Based on the analysis of pressure transient change within the oil transfer pipeline , a real time pressure model of oil pipeline is set up . software and hardware of the diagnosing system for leak detection & location were developed and the indoor experiment as well as site test was performed
本文对输油管道压力瞬变过程进行了分析，建立了管道压力实时模型，研制出输油管道的泄漏故障实时诊断系统的软、硬件，完成输油管道泄漏检测及定位的室内试验和现场试验。 |
| 7. | The system whose distance precision is within ? 00m is adapt to crude oil gathering and transferring pipelines and long distance pipelines without missing alarm and has low rate of wrong alarm . it detects the real time situation of pipeline " s running . when the system meets the si tuat ion in which the amount of leak is beyond the 1 percent of total pipeline run , it will send out alarm in a instant , give the point of leak and evaluate the extent of leak
该系统适用于原油集输管线及原油长输管线，无漏报，误报率低，定位精度达到了200米，实时监测原油管道的运行状态，遇有大于管道输送量的1泄漏时，能够在短时间内声光报警，给出泄漏位置及估计泄漏程度。 |
