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提高电热管使用寿命的方法

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提高电热管使用寿命的方法

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电热管使用寿命

Some 1 wiring insulation layer should be on the outside, avoid touching and corrosive, explosive medium, moisture; wiring should be able to accept long time temperature and heating wiring some load, the wiring screws fastening should avoid excessive force. 2, element should be stored in a dry place, if because of long time placed insulation resistance is lower than 1MΩ, in oven at 200℃in boring, or drop voltage electric heating, and rehabilitation of insulation resistance. 3 electric heating tube of magnesium oxide powder outlet, in the use of places to avoid being pollutants and moisture to enter, to avoid the onset of leakage trouble. High temperature wire, thermocouple, bimetal thermometer, temperature control appearance. 4, element to work under the following conditions: A. air relative humidity of not more than 95%, no explosive and corrosive gases. 1.1 times B. working voltage should be not greater than the additional value, the shell should be effectively grounded. C. insulation resistance than 1M Ωdielectric strength: 2KV\/1min. 5 electric heating pipe should be fixed, useful heating area is necessary to fully immersed in a liquid or solid metal, no empty. Found the body surface scaling or carbon, should be timely to clean and then, to avoid affecting heat and shorten the using life. The 6 heating the fusible metal or solid salt, alkali, Li Qing, Ishi and so on, should be decreased by using voltage for medium, after melting, can rise to additional voltage. Heating the air element should be inserted evenly placed, the element radiation condition outstanding, so that the air can be fully heated.1.接线有些应放在保温层外面,避免与腐蚀性、爆破性介质、水份触摸;引接线应能长时间接受接线有些的温度及加热负载,接线螺丝紧固时应避免用力过猛。   2.、元件应存放在枯燥处,若因长时间放置绝缘电阻低于1MΩ时,可在200℃左右的烘箱中枯燥,或下降电压通电加热,直至康复绝缘电阻。   3.电热管出线端的氧化镁粉,在运用场所避免遭到污染物与水分进入,避免漏电事端的发作。高温线,热电偶,双金属温度计,温控外表。   4.、元件答应在下列条件下作业: A.空气相对湿度不大于95%,无爆破性和腐蚀性气体。 B.作业电压应不大于额外值的1.1倍,外壳应有用接地。 C.绝缘电阻≥1MΩ 介电强度:2KV\/1min。   5.电热管应做好定位固定,有用发热区有必要悉数浸入液体或金属固体内,禁止空烧。发现管体表面有水垢或结碳时,应及时铲除洁净再用,避免影晌散热而缩短运用寿命。  6.加热易熔金属或固态硝盐、碱、沥清、石腊等时,应先下降运用电压,待介质熔化后,才干升至额外电压。 加热空气时元件应穿插均匀摆放,使元件有杰出的散热条件,使流过的空气能充沛加热。

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