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国际电工会议推荐,大功率汽轮机调节系统的不灵敏度应小于0.06％,这个指标与我国目前水平差距很大,因此有必要研究提高灵敏度的途径。本文从两个角度探讨了这个问题。一是系统的结构对不灵敏的影响,分析了积分环节的位置对系统不灵敏度所起的作用,对国产液压调节系统和功频电液调节系统进行了比较,指出功频系统在结构上有利于系统灵敏度的提高。二是探讨了提高目前液压系统灵敏度的措施。对人们关心的最佳脉动油压进行了分析,指出比较的前提如果不同则结论也不相同,一般情况下最佳脉动油压应等于1/2Po。此外,对于提高随动滑阀灵敏度,阀过封度对不灵敏的影响等问题也提供了分析和看法。调节系统的不灵敏度是它的重要指标之一,国际电工会议推荐,大功率汽轮机的不灵敏度应小于0.06％,与我国差距很大,为了适应四个现代化的需要,赶超国际先进水平,有必要对降低汽轮机不灵敏度问题进行研究。一般认为调节系统的不灵敏度仅和调节元件的结构,工艺水平和运行维护质量有关,但是应该指出,它们和系统的结构,元件参数的选择也有密切的关系,本文将从这两个方面进行分析和研究,寻找降低汽轮机调节系统不灵敏度的途径。
International Electrotechnical Commission recommended, high-power steam turbine control system should be less than the sensitivity of less than 0.06%, this indicator is far from our current level of great differences, it is necessary to study ways to improve the sensitivity. This article explores this issue from two perspectives. First, the structure of the system insensitive to the impact of the integral part of the position of the system to determine the role of insensitivity, the domestic hydraulic control system and power frequency electro-hydraulic control system were compared, pointed out that the power system has the structure Conducive to the improvement of system sensitivity. The second is to explore ways to improve the current sensitivity of the hydraulic system. The best pulsating hydraulic pressure that people care about is pointed out. If the premise of comparison is different, the conclusion is not the same. Under normal circumstances, the best pulsating hydraulic pressure should be equal to 1 / 2Po. In addition, to improve the follow-up spool valve sensitivity, valve over-closure of the insensitivity of the problem also provides analysis and views. Regulating system insensitivity is one of its important indicators recommended by the International Electrotechnical Commission, high-power turbine insensitivity should be less than 0.06%, great gap with our country, in order to meet the needs of the four modernizations, catch up with the international advanced level, there are Necessary to reduce the turbine's insensitivity to carry out research. It is generally considered that the insensitivity of the regulating system is only related to the structure, technological level and quality of operation and maintenance of the regulating element, but it should be pointed out that they are also closely related to the choice of system structure and element parameters. This article will analyze these two aspects And research to find ways to reduce the insensitivity of turbine regulation systems.