毕业设计：石油管道内壁自动除锈机设计

毕业设计报告(论文)报告(论文)题目：石油管道内壁自动除锈机设计作者所在系部：机械工程系作者所在专业：机械设计制造及其自动化作者所在班级：2作者姓名：作者学号：指导教师姓名：完成时间：月本科生毕业设计（论文）开题报告论文(设计)题目石油管道内壁自动除锈机设计作者所在系别机械工程系作者所在专业机械设计制造及其自动化作者所在班级作者姓名作者学号指导教师姓名指导教师职称完成时间 2 年月毕业设计(论文)开题报告Study on Cleaning Device for the Pipe WallSHI Guo-hong(Jiangsu University of Science and Technology,JiangsuZhenjiang,212013,China)Abstract:It designs a new type of cleaning device ,with which the rust of metal pipe internal wall can be eliminated .The cleaning quality reaches the class Sa2.5 of Swedish Industry Standard the efficiency surpasses 30m2/h,and the life of its nozzle overtakes 1000 hours .Beacuse of its unique structure and excellent spray quality ,this can be used in many fields such as oil and chemical industry,shipbuilding and machine engineering etc .Key words: Nozzle;Sand–spraying; Rust –eliminating ;Roughening, Pipeline Along with the development of western China, west-east gas transmission project has become the frontier. To ensure the smooth and safe gas transmission pipeline, pipe used also put forward some high requirements. In order to remove the rust and steel surface oxide skin and improving the adhesion and coating on the surface, often need for special anti-rust, derusting processing. For corrosion heavier solid metal paint, surface treatment, use commonly, cannot achieve clear standard, to achieve a specific standards, often need to adopt the way into derusting, surface derusting, for good quality of the durability of the enormous influence after coating, can make the coating are more durable number four times after treatment, shot from the metal surface, although the micro is still uneven, butthe appropriate to the coating is concave and convex, because it helps the flow and adornment, make the metal surface and coating has very good adhesion of the paint, particularly effective, need more shot blasting processing, metal surface strengthening function on metal surface derusting, coating quality of life around 50% influence, derusting, more use manual work, steel wire brush, sand paper burnish, etc, these methods not only the efficiency is low, the quality is poor, the labor intensity, and environmental pollution and harm to human health, used in place of blasting, often USES a open shot room or directly open shot blasting room not only establish high cost, structure still exists, complexity of open shot unavoidable disadvantages, severe environmental pollution and harm to human health.Currently most using metal pipe wall derusting chemical pickling method，not only the cost is high, quality derusting unstable, and pollution is serious, the production of operators, unfortunately bad health hazard. Also can form rust corrosion protective coating for surface roughness, thus affecting the coating quality, reduce the pipeline using life.Metal surface sanding derusting process is believed to be the best alternative pickling derusting, especially used in metal sheet metal structure and appearance of coaring, rust, and good effect has been widely used.Cleaning is the most effective before coating surface cleaning method. Again good coating, it is impossible to firmly adhere to the surface, in dirty cleaning not clean before coating, coating failure caused by means of cost, the original coating, coating, all losses, costs, corrosion, except for repairing suffer loss, cease, still need to rejoin the manpower and material resources to painting. This method of pipe length and diameter are wider range of adaptability, productivity high, cleaning effect is good, and the worker labor conditions improved greatly reduce labor intensity, and increased primer, improve adhesion to steel corrosion and corrosion resistance, extend the ability of the pipeline.Use abrators after cleaning the surface of steel has certain anchor grain depth,thus increasing the adhesion of the paint, improve the corrosion resistance of steel and corrosion resistant capability and prolong the life of pipeline. Cleaning is refers to the use of mechanical centrifugal cast to accelerating projectile after cleaning process of workpiece. On the inner surface of tube cleaning shot peening technology, often used for pipe length, its advantage is there greater scope and diameter of adaptability, productivity high, cleaning effect is good, and the worker labor conditions improved greatly decreased, labor intensity.Along with the development of technology, shot blasting equipment, equipment parts into the consumption is increasing. Especially the projectile, as our country's shot blasting equipment still mainly adopts the projectile which, qualitative hard brittle, internal organization of osteoporosis, work very easily broken, so its consumption. And when the pill, which adopts the blade and into the guard board, impeller, consumption rate is very high abrasion. According to the statistics, roughly about SanWanTai shot at work, consumes unworn about 2 ~ 3 billion yuan. The future development direction of blasting technology should be practical, high efficiency, save the development direction. Do the following:(1)simple structure：Shot automatic derusting machine as a cleaning tools, the main function is to metal surface derusting and reinforcement, so the factory for removal of the additional processing all kinds of special structure, universal characteristic.(2) cost：Automatic derusting and shot used for precision machining device is simple, structure. We know that every improve precision grades of a machine to its cost, lower investment returns to factories to obtain the maximum benefit, as far as possible to reduce the cost.(3) easy maintenance：Due to the use of automatic derusting machine shot in the process of machine, especially for internal wear separators and shot in the largest part wear, so to ensure easy, convenient maintenance and replacement should be simplified structure.The design of the large diameter steel cleaning solution to the problem of low, productivity, its main technical performances can achieve clear standard pipe. Design can be to "west-east gas pipeline and gas transportation etc. Used for surface treatment, the performance good stability, low failure rate and cleaning effect is good, can be applied in practical production. Compared with the imported equipment, low cost, high suitability for application. Used in petroleum, chemical industry, water etc. With the pipe anticorrosion paint, and before the application range is very wide.管道内壁除锈装置的设计摘要：研究设计的新型喷射装置有独特的喷头结构和形状，用于金属管道内壁喷砂除锈，质量达到瑞典工业标准Sa2.5级，效率达到30m/h以上，喷嘴寿命接近1000h；在喷砂除锈的同时能在金属管道表面形成一定的表面粗糙度，从而提高了涂覆防腐层的附着强度。