共查询到19条相似文献,搜索用时 125 毫秒
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吴泾热电厂的1025t/h控制循环锅炉,配有美国MOD300炉膛安全监控系统。由于锅炉可控性好,控制系统先进,经调试后顺利投入运行。 相似文献
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对循环流化床锅炉综合燃烧控制系统的控制方案进行了探讨和尝试,文中分析了影响循环订锅炉燃烧稳定性的主要因素,介绍了综合燃烧控制系统,以及改善综合燃烧系统可监测性和可控性的措施。 相似文献
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分析了供热锅炉节能环保的各项影响因素,如锅炉热效率、锅炉炉渣含碳量、锅炉排烟温度、锅炉外表面温度,并针对上述因素提出了几点节能环保措施,包括设置分层给煤装置、严密监控供热锅炉运行状态、优化锅炉鼓风机、引风机调节方式等,为从事供热锅炉管理的人员提供一定参考与借鉴。 相似文献
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For many control systems in real life, impulses and delays are intrinsic properties that do not modify their controllability. So we conjecture that under certain conditions the abrupt changes and delays as perturbations of a system do not modify certain properties such as controllability. In other words, the controllability is robust by looking the impulses and delays as perturbations. In this regard, in this paper, we prove the interior approximate controllability of the Impulsive Semilinear Heat Equation with Memory and Delay. This is done by employing A.E. Bashirov and at. technique which avoids fixed point theorems. In this case, the delay helps us to prove the approximate controllability by pulling back the control solution to a fixed curve in a short time interval. 相似文献
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Mo Chen 《Journal of Dynamical and Control Systems》2017,23(1):19-31
In this paper, we consider a coupled system of two Korteweg-de Vries equations on a bounded domain. We establish the null controllability of this system from the left Dirichlet boundary conditions. Combining the analysis of a linearized system and a fixed point argument, this controllability result is reduced to prove the null controllability of a linearized system with two distributed controls. 相似文献
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This paper deals with the null controllability of the system governed by coupled degenerate equations with the first order terms. The null controllability of the system with two controls is proved firstly, then the system with one control is shown to be null controllable by constructing the control function. To investigate the null controllability, we establish the Carleman estimate and the observability inequality for the adjoin system by using the Carleman estimate for the single degenerate equation. 相似文献
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A heat exchanger network (HEN) is the heart of a heat-integrated plant, and classical synthesis methologies assume all design operating conditions are constant values and overlook controllability issues. The controllability measures presented in this paper are intended to assess the controllability of a HEN through a simple and comprehensive methodology consisting of five steps that allows an easy screening process to determine a more controllable HEN. 相似文献
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以410 t/hCFB锅炉为研究对象,在分析"选择性流化床冷渣器-炉膛"系统压力分布特性的基础上,研究了压力分布特性对该种冷渣器物料流动及物料量的影响规律.结果发现:"冷渣器-炉膛"系统的压力分布特性对冷渣器物料平衡有重要影响.在稳定运行时,选择室的床层压降都小于另外3室,即选择室的床料量(或炉渣量)会小于其它3室;由于排渣的作用,冷渣器排渣室的床料量略少于中间2个冷却室;随着炉膛或冷渣器流化风速的增大,冷渣器内的床料量都将降低;炉膛和选择性流化床冷渣器之间是一种复杂的串并联关系,这使炉膛与冷渣器各室之间的气固流动参数相互制约,底渣流动的可控性较差. 相似文献
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循环流化床锅炉技术是目前迅速发展起来的一项高效、清洁燃烧技术。结焦就是循环流化床锅炉运行中较为常见的故障,它直接影响到锅炉的安全经济运行。结合循环流化床锅炉的运行特点,根据本人几年来的流化床锅炉调试和运行经验,分析流化床锅炉结焦的主要原因,并对如何预防循环流化床锅炉结焦进行了探讨。 相似文献
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燃煤热水锅炉运行安全性探讨 总被引:1,自引:1,他引:0
采用大容量燃煤热水锅炉是符合我国国情、改善环境质量的重要举措,势在必行.但是大容量燃煤热水锅炉安全运行是需要十分关注的问题.分析了热水锅炉出现故障的原因和解决办法,并以实例分析说明角管式燃煤热水锅炉不仅很好地解决了热水锅炉运行的安全性问题,而且有利于节约能源和改善燃煤热水锅炉使用地的周边环境. 相似文献