共查询到19条相似文献,搜索用时 171 毫秒
1.
2.
李德强 《中国锅炉压力容器安全》2008,(2):6-8
某公司新建4台3000m^3液化二甲醚大型球罐是三期二甲醚项目建设的配套设备,由沈阳三洋球罐有限公司现场组装、焊接,工程历时6个月。该球罐工艺技术组装速度快,焊接变形小,容易保证组装后球壳的几何形状及尺寸,使球罐的安装质量得到保障,大大缩短了组装工期,同时也降低了制作费用。 相似文献
3.
4.
5.
针对大型汽冷旋风分离器的制造工艺进行了分析总结,对装配工装的设计、使用进行了详细论述。通过完善的组装工艺方案和合理的装配工装设计,使大型汽冷旋风分离器在制造过程中实现了分片组装焊接、整体预装矫正、分片包装运输的新制造模式,显著提高了大型汽冷旋风分离器的制造质量。 相似文献
6.
介绍了水轮发电机圆盘式转子支架的结构特点.阐述了圆盘式转子支架的组装和焊接工艺及控制焊接变形的工艺措施。 相似文献
7.
通过对WNS系列湿背式燃油锅炉结构特点的分析,提出合理的组装工艺和焊接工艺,对其全过程进行严格的控制和管理,才能保证锅炉的制造质量,确保锅炉设备的安全可靠运行。 相似文献
8.
9.
根据锅炉汽包捲制筒节的制造工艺顺序,详细论述了筒节的划线、气割、捲制、纵缝的组装和焊接、校圆及热处理等工序,指出了每步工序的关键技术和经验数据,为相似锅炉汽包捲制筒节的制造工艺提供了可以借鉴的方法. 相似文献
10.
介绍了目前烟气脱硫装置中2种烟气加热器(GGH)转子的结构型式及特点,在制造过程中的一些制造要求及相应的工艺措施,如焊接材料的成分及选用、焊接方法的比较和选择、零件加工的要求、转子组装的要求、工艺程序和多次制造积累的相关经验介绍。制造工艺的日趋成熟,为今后开拓广阔的烟气加热器市场打下了扎实的基础。 相似文献
11.
12.
13.
锅炉设备安装主要分为钢架、压力容器(联箱)、平台扶梯、受热面、辅助管道、浇注料等部分,除钢架和联箱外,其余几部分对锅炉安装质量有着举足轻重的作用。以西北电力设计院新疆米东2×300 MW热电联产工程为对象,对锅炉这几部分安装的质量控制要点进行论述。 相似文献
14.
15.
16.
汽轮机转子与静子间的碰磨严重影响着机组的安全运行。为了解决汽轮机转子发生在早期和中期的碰磨故障难以通过基于振动信号检测诊断方法进行有效识别的问题,本文提出一种基于EEMD-LSTM的汽轮机转子碰磨故障诊断方法。首先,该方法通过声发射技术监测汽轮机转子的碰磨故障信号;然后,利用EEMD信号分解方法处理获取的声发射信号,并提取能量特征参数和相关的时域特征参数,从而获得碰磨故障特征数据集;最后,利用划分的数据集对LSTM神经网络进行训练与测试,从而获得碰磨故障诊断模型。工程应用结果表明,本文提出的方法能够有效识别机组在不同转速时期的早期碰磨故障,且故障诊断的准确率较高。 相似文献
17.
The direct‐drive radial flux synchronous generator is considered as the modern wind turbine drive train. Both the electrically (e.g., Enercon) and permanent magnet (PM; e.g., Siemens) excited direct‐drive generators are gaining popularity on the market today. Compared with the matured geared counterpart, the electrically excited direct‐drive generator is heavier and more expensive but more reliable per unit capacity. The PM‐excited generator is expensive, is simpler in electromechanical design, has a high power‐to‐weight ratio, and yields a higher energy conversion efficiency than its electrically excited equivalent. The PM generator technology has the potential to yield the highest energy‐to‐cost ratio. However, standardization of this direct‐drive generator parts/subassemblies may overcome the existing cost barrier. Most current literature focuses on PM generator wind turbine technology, specifically on generator energy conversion optimization, and the scalability of technologies to capacities in access of 5 MW. Strangely, PM generator's mass and cost reductions through optimized structural design incorporating manufacturing, transportation, and installation constraints are less studied. This paper solely focuses on the mechanical and structural design aspects of large radial flux synchronous PM generators specific to direct‐drive wind turbines. Generator topologies such as the common iron‐cored and unconventional air‐cored generator are discussed. However, design considerations specific to the iron‐cored generator topology are studied. The design considerations investigated involve the geometries and the configurations of rotor/stator active and inactive structures, the interfaces, and the conductor/PM mounting methods. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
18.
This paper describes the parameters required for a thermoset hydro-generator stator winding to achieve a service life of 50 years. Such parameters covering design, manufacture, installation, online monitoring and maintenance functions have been found to be relevant based on 36 years of design and operation experience. The database includes North American, European and Far Eastern hydro generators up to 20.5 kV-500 MVA. Parameters covered can be simply stated as design, installation and manufacture: the DIM rule 相似文献