Corresponding countermeasures are given to the problems to ensure that the magnetic flap liquid level gauge is blocked and the blocked magnetic flap liquid level meter is cleaned. The corresponding workload should be minimized to achieve a long-term real and effective monitoring of the furnace water level, reducing The labor of maintenance personnel. This paper adopts the method of PDCA process control, starts from the problem, analyzes the cause of the problem, and formulates targeted countermeasures according to the cause of the problem.

　　1. Expand the diameter of the connecting pipe and install the isolation valve to effectively isolate the magnetic flap level gauge and the furnace body

　　At the same time of regular maintenance of the heating furnace, the structure of the magnetic flap level gauge is transformed, and the connecting pipe between the magnetic flap level gauge and the furnace body is enlarged. Two isolating ball valves are installed in the corresponding positions. The ball valve is connected with the upper and lower communication pipes of the magnetic flap level gauge, and the control ball valve can effectively isolate the magnetic flap level gauge and the furnace body, so as to reduce the removal of the magnetic flap level gauge to the vacuum degree of the heating furnace and the water level in the furnace. impact to come. If the magnetic flap level gauge is blocked, the pellets can also be disassembled and assembled through the ball valve. There is no need to shut down the furnace and drain water during maintenance. After the magnetic flap level gauge is reinstalled, it does not need to refill water and do vacuum again. It completely achieves the purpose of ensuring that the heating furnace is not affected by the disassembly of the magnetic flap level gauge.

　　2. A stable cylinder is added to the body of the magnetic flap liquid level gauge to avoid disassembling the liquid level gauge to cool down for a long time.

　　After the practical application of the function of the stabilizing cylinder, it is found that there are still some problems in the cleaning of the magnetic flap level gauge, mainly because it takes a long time to stop the furnace to achieve the effect of cooling the furnace water. In response to this problem, the original magnetic flap liquid level gauge was removed, and a 600mm high and 150mm diameter master stabilization cylinder was installed at the original magnetic flap liquid level gauge through flange connection to enhance the magnetic flap liquid level. The capacity of the gauge part to hold impurities. At the same time, two movable magnets are installed on the outside of the lower flange of the cylinder body, and the principle of magnetic induction of iron sedimentation is used for adsorption, so that the metal oxides in the water are deposited in the main stabilization tank before entering the magnetic flap level gauge, and the control reduces the amount of entering The amount of impurities in the magnetic flap level gauge. The effect of adding a stabilizing cylinder is more obvious, which is mainly reflected in that it can effectively extend the time for cleaning the magnetic flap level gauge, which is doubled, usually from about 10 days to about 20 days. Most of the impurities in the furnace body will automatically fall in the stable cylinder after being adsorbed by the magnetic pole, thus achieving the purpose of relieving the clogging of the magnetic flap level gauge; practice has proved that there are many functions of the stabilization cylinder, such as: magnetic flap liquid level gauge When the level gauge is blocked and needs to be repaired, when the magnetic flap level gauge needs to be disassembled, the isolation valve of the parts will play an important role, which can isolate the stabilization cylinder and the magnetic flap level gauge during the disassembly process, without the need for When the time is wasted due to lowering the temperature, it is only necessary to open the water discharge valve at the bottom of the stabilization tank and release the furnace water in the tank.

　　3. The stable cylinder type magnetic flap liquid level gauge is redesigned, and the parallel reading of double liquid level gauges is implemented.

　　The original magnetic flap level gauges used are all single magnetic flap level gauges. In order to achieve the desired effect, the measures of installing double magnetic flap level gauges on the stabilization cylinder are adopted. The gauges are respectively connected to the left and right sides of the main stabilization cylinder. This ensures effective operation. Once one of the magnetic flap level gauges needs to be disassembled, the other can be started for operation. The dual magnetic flap liquid level gauge can realize uninterrupted whole-process monitoring, and the cleaning of the magnetic flap liquid level meter is also safer. In addition, two magnetic flap level gauges read at the same time, which can realize a variety of operation modes.

　　4. The body of the magnetic flap level gauge is equipped with a drain valve to avoid disassembly and cleaning of the magnetic flap level gauge

　　The heating furnace magnetic flap liquid level gauge body has been innovated, and the valve installation is installed. The staff can realize the flushing valve through the stable cylinder through the simple operation of the hand pump, and the pump enters the liquid water meter to stabilize the cylinder. The newly retrofitted and installed drain valve on the body of the magnetic flap level gauge discharges the incoming clean water, which can achieve the purpose of flushing. Compared with the effect before the transformation after the transformation, there is no need to disassemble the magnetic flap liquid level gauge when cleaning, which effectively saves the labor of the operator, reduces the cleaning time, and greatly improves the stability of the magnetic flap liquid level gauge.

　　5. Use on-site heating water to realize online cleaning of magnetic flap liquid level gauge through process transformation

　　The use of heating water to provide flushing water for the magnetic flap level gauge is used for innovation. The usual practice is to open small holes in the upper part of the heat exchanger to install shorting screws and valves. The heating heat exchanger in the operation room of the heating furnace should also be transformed accordingly. The water inlet valve should be installed in the corresponding position, and the thread valve should be connected with the flushing valve of the main stabilization cylinder and the flushing valve of the magnetic flap level gauge. The connecting medium can be It is a hose, so that it can realize both positive and negative flushing modes, which can avoid a series of work such as disassembly and installation when cleaning the magnetic flap level gauge, effectively reducing labor intensity and prolonging the life of the equipment.

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