As one of the countries that use the most concrete in the world, the development of concrete industry plays an important role in promoting the economic development of our country. Therefore, the actual operation of ea...As one of the countries that use the most concrete in the world, the development of concrete industry plays an important role in promoting the economic development of our country. Therefore, the actual operation of each concrete enterprise should be paid sufficient attention to. If the actual effect of concrete enterprises can be truly brought into full play, it will have an important impact on promoting the promotion of China's comprehensive national strength. But in the development process of concrete enterprises, they often have a great impact on the natural environment. Because the concrete enterprise is a very consumption of water resources industry. In the concrete pump pipe cleaning process, it will produce a large number of waste water waste residue, these waste water and waste residue will not only produce huge pollution to the surrounding residents of water resources, but also cause a great waste of water resources. At the same time, the production of a large number of industrial waste water will also have a bad effect on the development of concrete enterprises.展开更多
Ice pigging is an emerging technique for pipe cleaning in drinking water distribution systems.However,substantial confusion and controversy exist on the potential impacts of ice pigging on bulk water quality.This stud...Ice pigging is an emerging technique for pipe cleaning in drinking water distribution systems.However,substantial confusion and controversy exist on the potential impacts of ice pigging on bulk water quality.This study monitored the microstructural features and composition of sediments and microbial community structures in bulk water in eight multimaterial Chinese networks.Chloride concentration analysis demonstrated that separate cleaning of pipes with different materials in complex networks could mitigate the risk of losing ice pigs and degrading water quality.The microstructural and trace element characterization results showed that ice pigs would scarcely disturb the inner surfaces of long-used pipes.The bacterial richness and diversity of bulk water decreased significantly after ice pigging.Furthermore,correlations were established between pipe service age,temperature,and chloride and total iron concentrations,and the 15 most abundant taxa in bulk water,which could be used to guide practical ice pigging operations.展开更多
In order to solve the problem of the pipeline inspection and cleaning, combining the 3D modeling software Pro/Eningeer （Pro/E） and the dynamics analysis software RecurDyn, the main model, the track system model of t...In order to solve the problem of the pipeline inspection and cleaning, combining the 3D modeling software Pro/Eningeer （Pro/E） and the dynamics analysis software RecurDyn, the main model, the track system model of the tracked pipe duct cleaning robot and the road model are built, and the entity assembly in RecurDyn is applied and the simulation model is obtained. The paper RecurDyn. The speed, the torque of driving wheel and the carries out the dynamic simulation with the software vibration-acceleration of gravity of the whole robot in the vertical direction are obtained and analyzed. Finally, the simulation and the calculation results are compared, the two results are basically the same, it has guiding significance for the further study and the potential applications of the tracked pipe duct cleaning robot展开更多
文摘As one of the countries that use the most concrete in the world, the development of concrete industry plays an important role in promoting the economic development of our country. Therefore, the actual operation of each concrete enterprise should be paid sufficient attention to. If the actual effect of concrete enterprises can be truly brought into full play, it will have an important impact on promoting the promotion of China's comprehensive national strength. But in the development process of concrete enterprises, they often have a great impact on the natural environment. Because the concrete enterprise is a very consumption of water resources industry. In the concrete pump pipe cleaning process, it will produce a large number of waste water waste residue, these waste water and waste residue will not only produce huge pollution to the surrounding residents of water resources, but also cause a great waste of water resources. At the same time, the production of a large number of industrial waste water will also have a bad effect on the development of concrete enterprises.
基金financially supported by the National Natural Science Foundation of China(52100015)the Zhejiang Provincial Natural Science Foundation of China(LQ22E080018)the China Postdoctoral Science Foundation(2021M692860).
文摘Ice pigging is an emerging technique for pipe cleaning in drinking water distribution systems.However,substantial confusion and controversy exist on the potential impacts of ice pigging on bulk water quality.This study monitored the microstructural features and composition of sediments and microbial community structures in bulk water in eight multimaterial Chinese networks.Chloride concentration analysis demonstrated that separate cleaning of pipes with different materials in complex networks could mitigate the risk of losing ice pigs and degrading water quality.The microstructural and trace element characterization results showed that ice pigs would scarcely disturb the inner surfaces of long-used pipes.The bacterial richness and diversity of bulk water decreased significantly after ice pigging.Furthermore,correlations were established between pipe service age,temperature,and chloride and total iron concentrations,and the 15 most abundant taxa in bulk water,which could be used to guide practical ice pigging operations.
文摘In order to solve the problem of the pipeline inspection and cleaning, combining the 3D modeling software Pro/Eningeer （Pro/E） and the dynamics analysis software RecurDyn, the main model, the track system model of the tracked pipe duct cleaning robot and the road model are built, and the entity assembly in RecurDyn is applied and the simulation model is obtained. The paper RecurDyn. The speed, the torque of driving wheel and the carries out the dynamic simulation with the software vibration-acceleration of gravity of the whole robot in the vertical direction are obtained and analyzed. Finally, the simulation and the calculation results are compared, the two results are basically the same, it has guiding significance for the further study and the potential applications of the tracked pipe duct cleaning robot
