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1.
加热炉辐射管的技术进化路线分析   总被引:1,自引:0,他引:1  
辐射管是加热炉的主要加热元件,加热效率、热效率、温度均匀性及使用寿命是其主要的性能指标。运用TRIZ的技术进化理论对辐射管主要性能进行系统分析,得出辐射管的技术进化路线,可以看出对辐射管仍然有很大的研究空间,利用此路线可预测出辐射管应向改变几何形状和超系统的方向发展。  相似文献
2.
带钢连续热镀锌退火炉预热区及无氧化加热区的热诊断   总被引:1,自引:0,他引:1  
许秀飞  刘灿楼  张洵  刘忠诚 《轧钢》2010,27(3):33-36
介绍了带钢连续热镀锌退火炉预热区及无氧化加热区热诊断的项目和方法,分析了实际空气过剩系 数的数值及其受环境温度的影响,并介绍了实际诊断的案例和结果。本案例通过热诊断使热效率提高了2.5%,经维修和小范围改造又提高了1.5%,每年节约能源折合成标准煤约200t&  相似文献
3.
流程中碳酸钠浓度的升高对氧化铝的溶出、蒸发等主要工序造成不利影响,影响了蒸发器的换热效率,影响了生产能耗的进一步降低。通过分析碳碱升高的原因和危害,提出降低碳酸钠的措施。  相似文献
4.
针对唐钢炼铁厂北区锅炉车间2#锅炉的节能降耗问题,通过优化运行操作工艺,来控制锅炉的过量空气系数,降低含氧量。不但提高了锅炉的热效率,还做到了节能减排,增加了经济效益和社会效益,而且操作方法简单、易学。  相似文献
5.
根据涡旋式膨胀机的工作原理,对涡旋式膨胀机进行动力学分析,得到了涡旋齿所受切向气体力的表达式,进而得出了输出转矩的表达式.以工程热力学的普遍原理为基础,得到了涡旋式膨胀机的有用功,结合气动功率概念,最终推导出涡旋式膨胀机有效热效率的表达式.在理论研究的基础上,设计了试验台,通过试验对结论进行了验证,证明了涡旋式膨胀机的效率与进气压力、体积流量、膨胀机转速之间的关系,并指出工质内泄漏对涡旋式膨胀机效率的影响,为提高涡旋式膨胀机的效率提供了理论基础.  相似文献
6.
The results are presented of the investigations of the effect of the surfacing parameters on the penetration area and thermal efficiency in the conditions of constant heat input in automatic deposition of a bead on a thick component. The correction coefficients for calculating the penetration area using the well-known and corrected Rykalin equation for a constantly acting and rapidly moving point heat source on the surface of the thick component are determined.  相似文献
7.
A possibility of correcting N. N. Rykalin's known equation to calculate spot peak temperature in the welding area is shown. It is suggested to take into account factors related to metal fusion: latent heat of fusion and overheating degree. A possible experimental estimate of thermal efficiency value application in calculations for a point source at machine welding where the heat source distributed is carried out.  相似文献
8.
The results of thermal efficiency on welding using the modified indirect electric arc technique [Ambriz RR, Barrera G, García R. S&I. 2006;11:10–17] of the 6061-T6 aluminium alloy are presented. These values are in the range of 90–94%, depending on the preheat temperature and were obtained by means of a heat balance that considers the heat input, the amount of molten mass of the welding profiles, and welding parameters during the joining, giving particular emphasis to the data collected during the digitalization of the arc current. Also, some dimensionless parameters were employed in order to determine the approximation grade of the molten pool, the heat-affected zone, and their corresponding approximations to the experimental results.  相似文献
9.
It is shown that the well-known equations proposed by N.N. Rykalin for calculating temperatures and also the main parameters of the thermal cycles of points in automatic welding and surfacing with the allowance made for the factors associated with the melting of parent metal should be corrected.  相似文献
10.
The results are presented of the investigation of the effect of the surfacing parameters on the penetration area and the thermal efficiency in the conditions of constant heat input in automatic deposition of a bead on a thick component. Correction coefficients used to determine by calculations the penetration area using the well-known and corrected Rykalin equation for a spot constantly acting rapidly moving heat source on the surface of a thick component are derived.  相似文献
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