Applied Mechanics and Materials Vols. 71-78

Abstract: Based on the structure of TFT_LCD controller in S3C2440A, the hardware design of a special LCD display system is completed which is composed of S3C2440A and liquid crystal display modules of TFT_LCD. The reliable control of TFT-LCD is achieved through SPI &RGB interface mode, and the methods of the display program and register initialization of display system are presented. The system can be applied to TFT_LCD module of different resolutions for testing instruments data-showing. The design can also be made as a reference for engineer in developing the LCD display system to shorten the development cycle and save cost.

Abstract: Because of special running condition, it is very difficult to maintain and detect wind turbines. In order to reduce waste of financial cost and people and cut down cost of maintain and the repair of schedule .In order to change traditional repair of schedule into state repair, We need to improve the inspect accuracy. By introducing the wavelet analysis module of Matlab in the article and according to the analysis of measure vibration signal from SUT-1000 wind turbine which is designed by Shenyang University of Technology, and apply wavelet theory to analyze the data. we can get intuitionistic envelopment spectral line .Therefore, we can get practical and accurate run condition, put forward applicable report, and realize function of inspecting wind turbine on line.

Abstract: With types of power units, huge installed capacity and complicated operation modes, the Three Gorges Power Station (TGPS) is very important in network operation of Yangtze River area. Power forecasting of TGPS plays an important role in protecting the power network operation and shipping, especially for the short-term output forecasting. The water consumption rate of power station is one of the key conditions in short-term generation control system during non-abandon water period. Therefore, in order to develop the generation control scheduling model of TGPS in non-abandon water period, analysis on many factors should be put including: hydraulic turbine characteristic curves of cascade hydropower stations constructed by TGPS and the Gezhouba Power Station; discharge at dam site; water stage of relationship between upstream and downstream; and the last element is tailrace effect from the Gezhouba Power Station to TGPS. The historical operating result shows that the model referred has wide application prospect in production practice for high precision and much exercisable.

Abstract: The real solution to the emissions of carbon dioxide and nitrogen and sulfur oxides is obvious: China needs to break its addiction to fossil fuels. The perfect alternative fuel will be hydrogen. The reaction of water with aluminum and its alloys can generate hydrogen. This paper introduces the concept of aluminum hydrogen energy industry and discusses the development of aluminum hydrogen energy industry in China.

Abstract: The paper researches with a 1000MW thermal power generating unit. The impact of steam cylinder efficiency's changes on steam turbine’s heat consumption rate and units’ coal consumption rate has been evaluated. It provides the basis for the units loss analysis and guidance for the 1000MW units’ energy saving.

Abstract: Sulfur dioxide is one of the major pollutants resulting from fuel combustion. In this study, CaO and attapulgite were utilized as raw material for synthesizing CaO/attapulgite(CaO/ATP) desulfurizer. The performance of samples was studied in dynamic conditions. Major factors affecting the desulfurization such as weight ratio of CaO to total, types of modifiers, desulfurizer particle size, bed temperature were investigated. The desulfurization agent synthesized under optimal synthesis conditions with an CaO content of 30 wt% and an NaOH modifier, and the desulfurization reaction processed under optimal synthesis conditions with water content of 20~30wt%, a particle size of 1/10 of desulfurization tower diameter and room temperature, exhibit sulfur tolerance of 17.97wt%.

Abstract: Liaohe block J is a super heavy oil reservoir with relatively strong anisotropy and active edge-bottom water condition. After more than two decades of huff and puff production, the block now reaches a low production rate period, and the local part of the block also encounters serious edge-bottom water invasion. Now steam flooding is used as a switching method to invert the production decline tendency. Applied with thermal recovery process and numerical simulation method, reservoir pressure at flooding conversion, pressure control in steam flooding, injection-production parameters and well pattern are used to optimize the key techniques of steam flooding design. The design results are as follows: the reservoir pressure at flooding conversion as well as during steam flooding process should be controlled below 5 Mpa; the unit volume steam injection rate is 1.65t/d.hm2.m and the bottom-hole steam quality of injecter is no less than 53%; the injection-production ratio is 1.1:1 and inversed 9 point pattern with a 83m well space is used. The steam flooding pilot has been carried out for more than 2 years and obtains favorable benefits.

Abstract: In this paper, a sub-critical 600 MW power generating unit produced by Shanghai Turbine Generator Corporation has been used for the operation optimization test of main steam pressure. The test has chosen seven loads and four run ways during peaking loads. The economical sliding pressure operation curve of peak load unit can be obtained from the test. The experimental results show that the unit should choose rated pressure operation when load is larger than 470MW, and choose two valve points sliding pressure operation when load is under 470MW to get the lowest heat consumption.