Papers by Keyword: Working Principle

Abstract: In recent years, the development and utilization of renewable generation have attracted more and more attention, and the grid puts forward higher requirements to the energy storage technology, especially for security, stability and reliability. The liquid metal battery (LMB) consists of two liquid metal electrodes and a molten salt electrolyte, which will be segregated into three liquid layers naturally. Being low-cost and long-life, it is regarded as the best choice for grid-level large-scale energy storage. This paper describes the main structure and working principle of the LMB, analyzes the advantages and disadvantages of the LMB when compared with the traditional batteries, and explores the feasibility and economy when it is used as a kind of large-scale energy storage applied in the power grid. The paper also makes a comprehensive comparison on the performance of several LMBs, and points out the LMB’s research and development in the future.

Abstract: Based on work principle analysis of a new multi dual-eccentric axes tunneling shield, the advantages of adapting well to large diameter long distance tunnel and energy saving are showed in detail. Then, the cutter head drive theoretical model driven by a single hydraulic cylinder is analyzed, the expressions of driving force and hydraulic cylinder flow are set up, they all vary with the position changing of the cutter head. On this basis, the multi cylinders drive theoretical model is obtained by superposing the expressions of each cylinder. Subsequently, the relationships between working pressure, system flow and cutter head rotating speed under the working conditions of constant torque, constant flow and constant rotating speed are analyzed. The analysis results show that the working pressure and system flow are fluctuating when the cutter head rotating speed maintains constant, and the cutter head drive system is of constant power, and this is also the actual work condition of the shield. At the same time, each hydraulic cylinder stroke remains determined phase matching relationships. Finally, as the example with five cylinders driving, the matching relationships of the hydraulic cylinder strokes are discussed.

Abstract: With the development of automobile technology, automobile active safety has been paid more and more attention. ESP is an essential component of active safety. Currently, ESP has slowly gained popularity, vehicle safety has been significantly improved. In order to make people have more in-depth knowledge of ESP, the author through reading a large number of documents to complete the article. This paper focuses on the working principle of ESP, and a brief description of its common control methods.

Abstract: Feeding, moist, loose, remoisten, cutting and bake etc. are important processes and the cutting, which is one of the most important aspects of cigarette production, is one of key processes to determine the quality of cigarettes. In this paper, the principle SD508L Hob Cutter, mechanical motion and control are analyzed, and explained how to improve the quality and other issues in cutters for tobacco productions.

Abstract: There are various applications for geothermal energy. Geothermal heating is one form of great importance. The working principle is introduced. Then the origin and development are studied. Both the advantages and disadvantages are discussed, mainly compared with traditional radiator heating. Some related issues are studied too. All in all, there is a booming prospect in markets for geothermal heating.

Abstract: During coal mining, the working space in thin and medium thick coal seam of 1.5-2.0m is narrow, resulting in walking and working hard for workers, labour-intensive, low degree of security. Therefore, this paper presented automatic cutting technology and explained the key composition and working principle in detail, followed the field practice in working face of 22-204, with a satisfying result.

Abstract: Firstly, this paper introduces the development status of seawater desalination system, and analyzes significance of seawater desalination in today's energy shortage situation . The seawater desalination methods mainly include thermal method, membrane method and electrochemical method. The working principle of them is introduced in this paper.

Abstract: Based on the survey of existing brush cutter and the analysis of the known conditions, this paper mainly studied design mechanism and principle of brush cutter, and carried on calculation and calibration of spiral bevel gear cutting machine parts, so as to ensure that the design of brush cutter is safe, efficient, simple, comfortable and environmentally friendly. Product after research is of reliable performance, convenient operation, low noise and zero smoke and higher safety factor, making it get more extensive application in the industry.

Abstract: This paper introduces a kind of dust removal device-passive sprinkler dust car which is often used to improve the environment and to prevent dust underground. The function, working principle and basic structure of passive sprinkler dust car underground as well as how its main parts work are mainly described in this article. Moreover, the relationship between the spray parameters and the efficiency of reducing dust is studied by adopting the combination of experiment and theoretical analysis methods in order to obtain higher efficiency of reducing dust in this paper.

Abstract: For mine mining, In-situ stress is the fundamental force that causes the deformation and failure of surrounding rock in the mining engineering and supporting, and produces mine dynamic phenomena. Among many factors which affecting the stability of mining engineering, In-situ stress is the main and one of the most fundamental factors. According to the In-situ stress monitoring method some coal mine adopted, this paper introduces the concrete principle and working process.