论文部分内容阅读
活性区重水水位系研究性重水反应堆的重要技术参数,要求随时对其进行精确监测。原探针式水位计系统由于其探头不耐辐照,以及探针与水面接触电阻不稳定,故使用寿命短、检修量大,直接影响堆的安全运行。研制了一套基于称重原理的沉子式水位计。其一次仪表仅为一铝饼,不存在辐照与电接触问题,从根本上克服了上述弊病。沉子式系统的灵敏度与铝饼直径平方成正比,其误差与直径平方成反比,基本误差与被测高度无关。当沉子直径为50毫米时,系统灵敏度可达±0.5毫米,由弹簧温度系数所引起的附加误差约3毫米(18～50℃)。沉子水位计在重水堆上试运行三年,除做过几次小修外,使用效果是满意的。
The heavy water level in the active zone is an important technical parameter of the research heavy water reactor, and it is required to accurately monitor it at any time. The original probe water level gauge probe probe due to irradiative irradiation, and probe and water contact resistance instability, so the service life is short, overhauling large, directly affect the safe operation of the pile. Developed a set of submersible water level gauge based on the principle of weighing. The first instrument is only a cake of aluminum, there is no radiation and electrical contact problems, and fundamentally overcome the above shortcomings. The sensitivity of Shen sub-system is proportional to the square of diameter of aluminum cake, the error is inversely proportional to the square of diameter, and the basic error has nothing to do with the measured height. The system sensitivity is ± 0.5 mm when the diameter of the sinker is 50 mm and the additional error due to the spring temperature coefficient is about 3 mm (18-50 ° C). Shen sub-level water meter in the heavy water reactor test run for three years, except for a few minor repairs, the use of results is satisfactory.