Research Progress for Determination of the Antioxidant Content in Transformer Oil

2014 ◽  
Vol 543-547 ◽  
pp. 1157-1160 ◽  
Author(s):  
Chen Yao Liu ◽  
Na Na Wang ◽  
Yun Guang Huang ◽  
Wei Wei Yu ◽  
Li Ping Zhu ◽  
...  

Under the actions of dissolved oxygen, temperature, electric field, electric arc, moisture, impurities and metal catalysts, transformer oil in operation will undergo oxidation and cracking, which may result in production of large quantities of peroxides, alcohols, aldehydes, ketones and acids. To improve the oxidation stability of oil, the antioxidants should be added into the transformer oil before operation. This paper mainly introduced the oxidation process of transformer oil, the harm of transformer oil oxidation and the method for the determination of the T501 antioxidants content in transformer oil. It also forecast the development trend of the electrochemical test in the determination of T501 antioxidants content.

2011 ◽  
Vol 399-401 ◽  
pp. 1123-1130 ◽  
Author(s):  
Ling Zhang ◽  
Zhi Xian Chang ◽  
De Liang Li

A review is provided of the research progress of silica modified with vinyltriethoxysilane (VTES-SiO2). The typical methods for preparing VTES-SiO2are introduced. The structure and stability of VTES layer and the controllability of various modified methods are elucidated. The characterization of VTES modified layer by means of Fourier transform infrared spectrometry, X-ray photoelectron spectroscopy, nuclear magnetic resonance, thermogravimetry, scanning electron microscopy and transmission electron microscopy are highlighted. Moreover, the application of VTES-SiO2 in the fields of rubber, glass, china, fiber, leather, paint, drug carrier, luminescent materials, catalyst technology, analytical chemistry and biochemistry were described in detail. The development trend on the preparation, determination of active groups and applications for VTES-SiO2were prospected, as well as the mechanism and the existing problems.


2020 ◽  
Vol 198 ◽  
pp. 02008
Author(s):  
XIE Qiao ◽  
ZHANG Jia-sheng ◽  
Wang Xuan

The analysis methods and theories of slope stability are constantly improving and developing, and more methods in line with the development characteristics of the times have been put forward by scholars at home and abroad. Combined with the latest research hot spots in the direction of analysis methods of slope stability in the world, the analysis methods of slope stability are systematically classified and summarized; The principles, characteristics, scope of application of various methods are summarized; The development trend of slope stability analysis is comprehensively analyzed from various aspects. It provides the follow-up scholars with the research of new methods. It can provide reference for the selection of evaluation methods of practical slope engineering stability.


Author(s):  
Jingang Jiang ◽  
Qiyun Tan ◽  
Xiaoyang Yu ◽  
Dianhao Wu ◽  
Liang Yao

Background: As a kind of bionic robot, the bionic water strider robot can achieve sliding, jumping and other movements on the water surface, with advantages of small size, light weight, flexible movements and other characteristics. It can detect the quality of water, investigate and search the water surface and perform some other operations. It has a very broad range of applications and development prospects. Therefore, the trend of biomimetic water strider robot is catching more and more attention. Objective: To provide an overview of the bionic water strider robot and introduce their classification, characteristics and development. Methods: This paper reviews various productions and patents related to the bionic water strider robot from 2003 to the present. The sources of the papers include: CNKI, Wanfang, Patent publication announcement in China, Web of Science, IEEE, Elsevier, Springer-Verlag, Espacenet, FPO IP Research amp; Communities. To obtain the results, endnote is used for documentation and citesapce was used for visual analysis. Results: The mechanical structure of existing bionic water strider robots is analyzed and compared. The typical characteristics are concluded. The main problems in its development are analyzed and the development trend is foreseen. The current and future research of the productions and patents on the bionic water strider robot are discussed. Conclusion: The optimization and development of the structure of the bionic water strider robot and the development of associated components help to improve the simulation of the water strider's motion and to perform better on task in a complex water surface environment. In the future, with the deepening and improvement of the research, the bionic water strider robot will develop towards miniaturization, intelligence and integration.


2014 ◽  
Vol 989-994 ◽  
pp. 710-714
Author(s):  
Hong Mei Liu ◽  
Cheng Qun Wu ◽  
Xin Zhang ◽  
Yuan Bin Xu

By means of raw performance analysis of silt sintered porous brick, the importance of synchronous cutting machine in the molding process was revealed. On basis of the analysis of the present situation of research and application of synchronous cutting machine at home and abroad, according to the forming characteristics of silt sintered porous brick, technical parameters of synchronous cutting machine was explained and the development trend of the synchronous cutting machine was expected.


2012 ◽  
Vol 608-609 ◽  
pp. 160-163
Author(s):  
Kai Bin Wang ◽  
Rong Jin Liang ◽  
Zi Hua Xu ◽  
Zun Yi Ren

Development and utilization of solar and other renewable resources is the development trend on energy. Belong to one of the national industrial policy to support the strategic emerging industries to optimize the power structure, Energy conservation, environmental protection, the development of low-carbon economy has a positive effect. Different monolithic capacity of photovoltaic power generation project, in construction investment, the basic difference between the little and then be able to estimate the construction of photovoltaic power generation project investment, preliminary determination of investment projects in economic rationality.


2021 ◽  
pp. 117-117
Author(s):  
Shuo Gao ◽  
Runjun Sun ◽  
Yan Feng ◽  
Jingxian Hao

The research progress of electric heating elements is summarized in terms of heating element type and thermal performance evaluation. Their shortcomings are summarized, and the development trend is pointed out to provide help and direction guidance for the research of electric heating element.


2015 ◽  
Vol 729 ◽  
pp. 187-191 ◽  
Author(s):  
Hong Chang Wang ◽  
Jin Tong

The farmland weeds directly affect the crops yields, and the intra-row weeds are more difficult to eliminate than inter-row weeds. With the harm of chemical weeding technology cognition by people, the growth of awareness of environmental protection consciousness and food safety, the non-chemical weeding technology get more and more attention. Mechanical weeding as a good alternative method get more attention, and the intra-row intelligent mechanical weeding technology becomes a hot spot of research. The research on intra-row intelligent mechanical weeding technology of China have a large gap compared with developed countries. In this work, the current research of intra-row mechanical weeding technology of developed countries and China was reviewed, and the development trend of intra-row intelligent mechanical weeding technology of China were prospected. The universities and research institutes should be encouraged to learn from foreign advanced technology and the design concept of intelligent weeding equipment, increase the investment in intelligent mechanical weeding technology research and promotion.


2012 ◽  
Vol 591-593 ◽  
pp. 432-435 ◽  
Author(s):  
Wei Lin ◽  
Ping Yu ◽  
Chun Peng Zhang ◽  
Peng Zhang

This paper summarizes the current research condition of automatic drilling technology at home and abroad, it analyses the current type of automatic drilling combined with concrete examples. By comparing the working principles and structure characteristics of the automatic drilling, it points out the shortcomings of the existing technology and the development trend of the automatic drilling in our country. It is considered that AC frequency conversion motor technology and full hydraulic automatic drilling technique should be emphatically promoted, so many due improvements should be made on automatic drilling in China. Finally it makes a conclusion that the intelligent drilling must be achieved and automatic drilling system as the indispensable important part of intelligent drilling will have more broad application prospect in intelligent drilling.


2013 ◽  
Vol 671-674 ◽  
pp. 1779-1782 ◽  
Author(s):  
Bing Tao Liu ◽  
Guang Yu Zhu ◽  
Peng Ju Ding

Polymer epoxy resin is widely used in coatings and adhesives because of its excellent mechanical properties, adhesive properties, resistance to water and resistance to chemicals. In this paper, the research development status of the epoxy resin coating in building waterproof is reviewed. The preparation, performance measurement and application of epoxy resin waterproof coating are introduced, and the development trend of building waterproof coating is forecasted.


2012 ◽  
Vol 616-618 ◽  
pp. 1944-1951
Author(s):  
Fu Kun Yan ◽  
Qing Fei Xiao

This paper explains some deficiencies of grinding equipment in our country at present,introduces the angular screw lining plate and trench lining plate from mill lining plate ,also their application effects; and introduces the static and dynamic pressure bearing and the center drive energy-saving mode from the transmission part, on the basis of which take a brief introduction of a new device and its application status, then the development trend in the future is prospected.


Sign in / Sign up

Export Citation Format

Share Document