Water scale monitoring method for steam generator

Abstract

The invention relates to a water scale monitoring method for a steam generator. The water scale monitoring method comprises the following steps that: 1, the scaling degree of water scale needing to be cleaned is determined, a limit resistance value R0 between a liquid probe and a metal part under the scaling degree of the water scale needing to be cleaned is read and recorded, and the limit resistance value R0 is stored on a control system; 2, in daily use, when the steam generator is in a non-operation state, the control system executes an emptying task to empty water in a water storage cavity, and then the control system reads and records a monitoring resistance value R1 between the liquid probe and the metal part in the emptying state; and 3, the control system calls R1 and R0 for comparison; when R1 is smaller than or equal to R0, the control system judges that the water scale reaches or exceeds the scaling degree of the water scale needing to be cleaned; and when R1 is larger than R0, the control system judges that the water scale does not reach the scaling degree of the water scale needing to be cleaned. The water scale monitoring method is high in reliability, high in accuracy and suitable for water bodies of different water qualities, and daily work of the steam generator is effectively guaranteed.

Description

technical field [0001] The invention relates to a steam generator, in particular to a scale monitoring method of the steam generator. Background technique [0002] Since water contains various dissolved salts and exists in the form of ions; when a pair of electrodes are inserted into the water, after electrification, under the action of an electric field, the charged ions will move in a certain direction, that is, the anions in the water will move to the anode, The cations move to the cathode, making the water conduct electricity. In addition, after the water storage container is heated many times, the slightly soluble calcium sulfate (CaSO4) in the water body will be precipitated due to the evaporation of the water body, and the originally dissolved calcium bicarbonate (Ca(HCO3)2) and bicarbonate Magnesium (Mg(HCO3)2), decomposes in boiling water and releases carbon dioxide (CO2), and then generates insoluble calcium carbonate (CaCO3) and magnesium hydroxide (Mg(OH)2) and ...

AI Technical Summary

Problems solved by technology

[0003] Many products on the market have applied the above-mentioned conductive properties of the water body; related products include at least a steam generator, which is equipped with a pair of electrodes in the cavity for water storage, and the water body is controlled by monitoring the resistance value between the two electrodes. However, in daily applications, after the steam generator is used for a long time, a large amount of scale will form in the water storage chamber. The existence of scale will at least lead to the following problems: ① affecting the normal operation of the electrode and causing misjudgment; ② reducing heating efficiency, energy Increased consumption, etc.; for this reason, it is necessary to clean the scale. The existing method is to set the scale cleaning cycle before the steam generator leaves the factory, that is, when the working time of the steam generator is over a scale cleaning cycle, the user will be prompted to clean the scale. ;However, this is an unreliable scale monitoring method: if the water quality in daily use is relatively good, the scaling speed in the chamber will be relatively slow. There is no need to clean the scale; if the water quality of the daily use is relatively poor, the scaling speed in the cavity will be relatively fast. Without it, the work of the steam generator has been seriously affected

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