Dalian University of Technology

Huiyong Liang

Linan Zhao

Shuangqing Zhang

Xin Lv

Xingyu Lu

Shi Shen

Yongchen Song

Lei Yang

Jiafei Zhao

Jiawei Chu

Mingjun Yang

Yanghui Li

Yu Liu

Weiguo Liu

Tao Liu

Zheyuan Liu

A crude oil transportation drag-reducing agent testing loop test bench and its use method is provided. The test bench includes a gas supply and pressurization system, a pressurized storage tank system, a pipeline testing system, a reflux and circulation system, a valve switching system, a heating and insulation testing system, and a sensor testing system. The test bench can evaluate the performance of drag-reducing agents in transportation pipeline devices within a laboratory setting, and further inspect, evaluate, and test the effective performance of different proportions and types of drag-reducing agents. The test bench also ensures the safety of experimental test, reduces testing costs, avoids the production of large amounts of waste liquid, and minimizes test space.

Crude oil transportation drag-reducing agent testing loop test bench and a use method thereof

An in-situ observation device for gas hydrates includes a reactor, which includes a visual tube, a pulling rod, a temperature-controlled seed crystal rod and a spiral adjuster. An upper end and a lower end of the visual tube are respectively equipped with an upper end cap and a lower end cap. The upper end cap defines an air inlet, and the lower end cap defines a liquid inlet. An upper end of the temperature-controlled seed crystal rod is connected to an adjusting flange. The adjusting flange is connected to the spiral adjuster. A lower end of the temperature-controlled seed crystal rod hermetically passes through the upper end cap and is located in the visual tube. The temperature-controlled seed crystal rod defines a cooling liquid channel, and a cooling liquid inlet and a cooling liquid outlet, a seed crystal rod liquid inlet and a seed crystal rod outlet.

In-situ observation device for gas hydrates

A low-frequency acoustic wave generating device for detecting pipeline blockage related to the technical field of pipeline detection is provided and includes a sealing shell configured to be communicated with a pipeline, a sealed pressure environment is formed inside the sealing shell. A low-frequency electroacoustic transducer is disposed inside the sealing shell, the low-frequency electroacoustic transducer is connected to a signal generator and is configured to transmit an acoustic wave into the pipeline. The device transmits the acoustic wave signals to a high-pressure gas pipeline, combined with a signal generator capable of generating any waveform, thereby emitting any waveform of acoustic wave signal into the pipeline. The use of acoustic waves with special markings and characteristics for pipeline blockage detection can improve the anti-noise interference ability of the acoustic wave detection, and improve the precision of the detection.

Low-frequency acoustic wave generating device for detecting pipeline blockage

The present invention discloses a fully visual flow loop system for studying hydrate blockage. The fully visual flow loop system includes a first pipeline, a second pipeline, a third pipeline and a fourth pipeline connected successively in an end-to-end way; a single screw pump is connected between the first pipeline and the fourth pipeline from the four pipelines; the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all transparent to light; a plurality of CCD cameras are arranged between the first pipeline, the second pipeline, the third pipeline and the fourth pipeline; and, the fully visual flow loop system is arranged in a stepping low-temperature thermostatic chamber; a solution injection system can inject a solution into the fully visual flow loop system; a separation and collection system can separate and recover the solution; and a data acquisition system can integrate sensor information in all the other systems and give real-time feedback to ensure reasonable and coordinated operation of all systems. The fully visual flow loop system for studying hydrate blockage in the present invention can realize full visualization and real-time monitoring of the flow loop system.

Fully visual flow loop system for studying hydrate blockage

Growing community of inventors

Dalian, China

Huiyong Liang