Use far-infrared temperature control dryer to quickly dry water damage motor

Using far-infrared temperature control for dry dryers to quickly dry water damage motor Zhang Wenyuan Gong Su Huai Hai State Farm Sheilian County 224354 The rationale for the operation method made a detailed description, this dryer structure is simple and easy to operate, can be widely used in various industries Heating insulation system.

Jiangsu State-run Huaihai Farm is located at the lower reaches of the Huaihe River. It has two banks of the tailgate of the total irrigation system in the northern part of Jiangsu Province, and is located in the Yellow Sea to the east. It belongs to the transition zone of the northern subtropical to warmer belt. It has obvious marine climate characteristics. The average annual rainfall is 1014. The annual precipitation is concentrated in In 789 months, the rainfall accounted for more than 60 in the whole year. Since the establishment of the site in 1952, the electric power drainage and irrigation industry has developed rapidly. By the end of 1998, 80 electric power pump stations for irrigation and drainage have been built, with a fixed installed capacity of 5,500 kW, basically accomplishing the mechanization of farmland irrigation and drainage. However, the land on the site area and the 6 townships in Sheyang County of Sheyang County are severely intercalated, and the terrain is flat and low-lying. The ground elevation is only 0.91.2, waste yellow irrigation is zero, drought is easy, and typhoons often attack in summer and autumn, causing guest water. Neighbors, seawater crests, heavy rains, difficulties in drainage, frequent drainage disputes with surrounding villages, and long-term flooding of the drainage station's motor. The motor soaked in flood water needs to be dried before it can be used. In order to shorten the drying time and save money, we used a far-infrared temperature-controlled dryer to dry the water-damage motor of the drainage station and put it into operation. It was in good condition. This kind of dryer is simple, efficient and practical. It is easy to obtain materials with low cost, and its energy-saving effect is also very significant. It has a constant promotion and application value. 1 Working principle Far-infrared temperature control dryer consists of four parts: temperature sensor and temperature controller. Its main technical parameters are 3 temperature control range of 20200; temperature control accuracy of ± 0.5, probe temperature measurement accuracy of ± 0.5 working power 220 AC.

Temperature control temperature range is 20200, according to the needs of objects to be dried, but also can be extended to 300. The principle of the temperature is to assume the temperature of the object to be dried, the temperature controller selects the temperature disk to this time because the temperature controller selects the temperature disk The temperature is in the temperature range of the temperature probe, the temperature controller operates, the intermediate relay pulls in, the silicon carbon rod is turned on, and the silicon carbon rod radiates far infrared radiation to the periphery to heat the object. When the temperature of the heated object rises, the temperature probe converts the temperature change into an electrical signal, which is amplified by the electronic component and fed back to the temperature controller to cut off the power and stop heating. At this time, the heat preservation barrel is used to maintain the temperature; when the temperature drops to low At the same time, the temperature controller is again in operation, and the power of the silicon carbon rod is turned on to continue heating the object to be dried. Such a cycle realizes automatic control of the temperature and temperature confinement of far-infrared rays, controls the principle of the alkyne dryer and causes a vent hole; the temperature sensor, the motor Stator; 1 heat preservation barrel; 6 silicon carbide crucible; middle relay;

2 Operation method 2.1 Make sure that the barrel is made of 12 black iron sheets into a heat preservation barrel with a lid, or it can be circled on the spot with a metal bar. The barrel diameter is slightly larger than the outer dimensions of the object to be dried. The page time continues and the pressure increases until the tank is blown open. To make the fuel tank not to be blown, it is necessary to cut off the fault within 20 seconds. The circuit breaker has time for relay protection, plus the arcing time and its own operation time. The total breaking time is not less than 6 and this cannot be effective. The transformer is protected by ground, and the current-limiting fuse can be blown in 1 to cut off the fault because of the quick-break function, so that the transformer can be effectively protected.

The practice of some power companies in Europe can better illustrate this point. The German RWE Power Company reported that the power company used 46,000 medium voltage low voltage transformers in urban and rural power supply. All transformers are protected with high-voltage fuses. In 1987, there were 87 failures in the transformer, all of which were promptly removed and there was no fuel tank blasting.

EDF had made attempts to cancel the fuses. The results were as follows: 1960. In 1970, 7500 transformers occurred 500 times, which may be prevented by high-voltage fuses; 50 boxes were blasted; and second-person accidents occurred. This attempt found that it was wrong to cancel the fuse.

German BEWAG Power Company also affirmed the role of fuses. The company’s report stated that they used 500 6301 transformers, which were jointly protected by a gas breaker and a high-voltage fuse with a load disconnector. No serious damage to the sub-injector occurred in 20 years.

At the 1991 International Distribution Network meeting, Belgium also provided strong evidence. Belgium has observed more than 10 years for 40000 transformers. Statistics show that during this period, there was no secondary cabinet explosion. Of the 40,000 transformers, 97 are protected by a melting circuit breaker and 3 is protected by a circuit breaker; the transformer is installed outdoors, and the rest is housed indoors.

The above facts fully demonstrate that current-limiting fuses can better protect transformers. The fuse shall be closely matched with the load switch. When the single-phase fuse is blown, the fuse shall enable the load switch to open the phase immediately, so as to avoid the equipment from running in a non-full-phase state and causing danger. Therefore, the fuse here has a striker. When the fuse is blown, the tripping mechanism of the striker top opens the load switch and the load switch is opened. Therefore, the load switch must be provided with a linkage tripping mechanism to avoid the damage of the non-full-phase operation. This point in the international, 420 have specific provisions, China's combination of electrical appliances also carried out a reorganization test according to this standard. Gracefully, open the 2 holes on page 35. The holes are used to install the temperature probe; the other hole is covered with a cover. Open the cover to release the humidity during the low-temperature drying. Close the cover and carry out the high-temperature drying. Insulation barrels should be surrounded by sacks, cotton wool and other thermal insulation materials.

2.2 Drying temperature and time control Different drying temperatures and times can be set for different drying objects. For motors that are immersed in sewage for a long time, especially those in the late 1960s and early 70s, the insulation aging was severe. The initial drying temperature should be controlled at 50 70. The drying temperature should be maintained at 814 in the later period with high temperature drying. The temperature should be The control is based on the insulation level of the motor according to 80100. At this time, the bleed hole should be closed. After the high temperature drying in the late period of 68, the phase and relative insulation resistance of the stator coil of the motor should be measured every 1 meter. Measured with 500 megohms, to be insulated. When the resistance reaches 500M, and it is stable, the drying can be stopped.

After the motor is naturally cooled, it can be assembled and put into production.

3 Conclusion Far-infrared temperature control dryer is easy to draw, low prices, each need only invest more than 200 yuan. Among them, the silicon carbon rod is a custom cylinder structure with a diameter of 351 and a length of 90, and each voltage is required to be used in series of two. The rod has a large radial heating area, so that the temperature of the heated object is even, and the infrared material is used to radiate inside the object to determine the depth. The inside of the object is heated, and the thermal efficiency is high. The temperature controller has the advantages of convenient temperature adjustment, accurate temperature control, and performance Directly refers to the heated object temperature, intuitive, and greatly reduce the labor intensity of the drying process on duty, and achieved temperature control automation.

The practice in Huaihai Farms shows that the electrical equipment that has been immersed in sewage for a long time can be heated and dried according to the above two times. It has good insulation performance and short time effect, and can be widely applied to heating and insulation systems in various industries.

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