Tianjin Polytechnic University

Convergency (tianjin) Biotech Ltd.

Tianjin Jyjc Technology Co., Ltd.

Yang Yang

Peng Wang

Hong Wang

Xuexin Duan

Chao Gao

Jun Ma

Jianxin Li

Jingtuo Shen

Yongfang He

Tonghua Wang

Quan Wan

Lingda Gao

Xianzhi Lang

Xiaoping Liang

Hugejile Liang

The present invention discloses a negative pressure wave monitoring based leak detection method of a multipath pipeline network, including: analyzing a propagation process of a negative pressure wave in a single straight pipeline to obtain a calculated result of a sound velocity in a thin-walled pipe marking the pressure sensors at known disposing positions on a pipeline network map; linearly interpolating position coordinates of key nodes in the pipeline network to extend pipeline network information; resolving the time that a negative pressure wave signal generated by a leak propagates to each disposed RTUs to form a data column; and simulating a leak situation, detecting a pipeline pressure waveform by using the RTUs in a current network, and determining a point corresponding to the data column closest to a measured propagation time delay in the time delay standard library as a leak point, and outputting the position of the leak point.

Negative pressure wave monitoring based leak detection method of multipath pipeline network

A microfluidic control system and method for controlling the movement of target particles in a fluid. The microfluidic system comprises a fluid channel which is provided with an inlet and a plurality of outlets, and one or more ultra-high frequency sound wave resonators which may generate a bulk acoustic wave having a frequency of about 0.5-50 GHz in the fluid channel; by means of adjusting the shape and orientation of a bulk acoustic wave generating region of the ultra-high frequency bulk acoustic wave resonator, the particles enter a vortex channel caused by the bulk acoustic wave in a solution and move according to the specified position and direction, and the particles in the solution may be controlled and separated to obtain specified particles, or obtain a purified solution after the particles are separated.

Method and device for controlling movement of micro-particles in solution using ultra-high frequency sound wave

The present invention relates an antifouling electrocatalytic composite membrane and a membrane reactor. The electrocatalytic composite membrane () consists of a substrate and a catalytic coating, wherein the substrate is selected from a conductive substrate or a nonconductive substrate coated with a conductive coating, and the substrate is a porous support having supporting, conducting and separating functions. The catalytic coating is supported or coated on the surface and in the pores of the conductive substrate or the conductive coating so as to increase the electrocatalytic activity of the substrate. The membrane reactor provides a trans-membrane pressure as the membrane separation power generated by a pump () and dead-end filtration or cross-flow filtration is applied, then the feed liquid permeates through the membrane from one side to the other to achieve the separation of the liquid; meanwhile, an electrocatalytic composite membrane () as anode and an auxiliary electrode () as cathode are connected to a power supply () separately by conducting wires () so that an electrolysis apparatus is formed. The electrocatalytic composite membrane () has a self-cleaning function and achieves the pollution-free operation during the membrane separation.

Anti-pollution electrocatalysis composite membrane and membrane reactor

Growing community of inventors

Tianjin, China

Yang Yang