变压器油耐压取样的注意事项! - 山东变压器油哪家好

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变压器油耐压取样的注意事项!

发布时间2019-05-14  来源:http://www.wunqdctk.com

  在高压电气设备中,普遍大量应用着绝缘油,如变压器、油断路器、电缆、电容器其中,变压器油的电气强度实验是一个主要的内容。实验中变压器油的取样是一个重要的环节。变压器油取样是指在需求实验的变压器油中取出一小局部样品,以供实验之用。为了保证样品不“走样”,实验人员必需严厉恪守取样的请求,认真停止这项工作。
  Insulation oil is widely used in high voltage electrical equipment, such as transformer, oil circuit breaker, cable and capacitor. The electrical strength test of transformer oil is a main content. The sampling of transformer oil is an important step in the experiment. Transformer oil sampling refers to taking out a small part of the transformer oil for experiment. In order to ensure that the samples are not "aliasing", the experimenters must strictly abide by the sampling request and seriously stop the work.
  一、取样容器
  Sampling containers
  变压器油的取样容器应该是带有磨口塞的广口无色玻璃瓶,其容积应依据取样油量选择,取样油量普通应该不少于实验和冲洗油量的1.2倍,电气强度的实验取样油量是1.5Kg。正式取样前,取样容器要用汽油、肥皂液和其他除油溶剂(如酒精、磷酸三钠等)认真的洗净,然后用蒸馏水冲洗数次,使水能从瓶壁平均流下为止。将洗净的瓶和瓶塞放入105℃的恒温箱烘干(约2h),待温度降低,将瓶塞盖紧即可运用。取样瓶上应栓系标签,注明油料称号、来源、取样日期、天气、取样人员等。
  The sampling container of transformer oil should be a wide-mouthed colorless glass bottle with a grinding plug. Its volume should be selected according to the amount of oil sampled. The amount of oil sampled should be not less than 1.2 times of the amount of oil tested and flushed, and the amount of oil sampled in the experiment of electrical strength should be 1.5Kg. Before formal sampling, the sampling container should be carefully washed with gasoline, soap and other deoiling solvents (such as alcohol, trisodium phosphate, etc.) and then rinsed several times with distilled water so that water can flow down from the bottle wall on average. The washed bottles and corks are dried in a constant temperature oven at 105 C (about 2 hours). When the temperature decreases, the corks can be tightly capped and used. A label should be attached to the sampling bottle, indicating the oil title, source, sampling date, weather, sampling personnel, etc.
  二、取样办法
  Sampling methods
  1、室外取样,适合在湿度较小的晴天停止,以防雪、雨等其他杂质侵入油样。
  1. Outdoor sampling is suitable for stopping on sunny days with low humidity to prevent other impurities such as snow and rain from intruding into oil samples.
  2、在任何盛油的容器中取样,变压器油应该在取样前静止8h以上,在运转中的设备上取样,能够不经静止时间。
  2. Sampling in any container containing oil, transformer oil should be stationary for more than 8 hours before sampling, and sampled on the running equipment without stationary time.
  3、在电气设备中取样时,应该在设备下部的放油阀处停止,用清洁且不带毛的细布将放油阀的周围擦净,然后先将油放出1-2kg,用以冲洗放油道的油污,再放油少许,洗濯取样容器两次,最后放出需求的油量入瓶,塞紧瓶口。
  3. When sampling in electrical equipment, it should stop at the oil discharge valve of the lower part of the equipment, wipe the surrounding of the oil discharge valve with clean and unhairy fine cloth, and then release 1-2 kg of oil to flush the oil contamination in the oil discharge pipeline, then release a little oil, wash the sampling container twice, and finally release the required amount of oil into the bottle and plug the bottle mouth.
  4、若在油桶中取样,可用洗净烘干的直径约2cm的玻璃管停止。取样前,先将油桶摇动,使油混合平均,然后开启桶盖,将玻璃管插入油桶中后,在用拇指压紧玻璃管子的上口,提出玻璃管子,将油注入瓶中。如此的重复数次,直至取够油样为止,切忌用嘴吸入管。
  4. If sampled in an oil drum, the glass tube about 2 cm in diameter can be washed and dried to stop. Before sampling, shake the oil barrel to make the oil mix evenly, then open the lid of the barrel, insert the glass tube into the oil barrel, press the top of the glass tube with your thumb, put the glass tube forward, and inject the oil into the bottle. Repeat this several times until you have taken enough oil samples. Do not use mouth inhalation tube.
山东变压器油
  三、留意事项:
  Notice:
  1、油样应能代表设备本体油,应防止在油循环不够充沛的死角处取样。普通应从设备底部的取样阀取样,在特殊状况下可在不同取样部位取样。
  1. Oil samples should represent the main oil of the equipment and should be prevented from sampling at dead corners where the oil circulation is insufficient. Sampling should normally be taken from the sampling valve at the bottom of the equipment. Sampling can be taken at different sampling sites under special conditions.
  2、取样请求全密封,即取样衔接方式牢靠,不能让油中溶解水分及气体逸散,也不能混入空气(必需排净取样接头内残存的空气),操作时油中不得产生气泡。
  2. Sampling requirements are fully sealed, i.e. the sampling connection is reliable, the dissolved water and gas in the oil can not escape, and the air can not be mixed (the residual air in the sampling joint must be discharged), and no bubbles can be produced in the oil during operation.
  3、取样应在晴天停止。取样后请求注射器芯子能自在活动,以防止构成负压空腔。
  3. Sampling should be stopped on sunny days. After sampling, the syringe core is requested to move freely to prevent the formation of negative pressure cavity.
  4、油样应避光保管。
  4. Oil samples should be kept away from light.
  5、用500~1000mL取样瓶,先用洗濯剂停止清洗,再用自来水冲洗,最后用蒸馏水洗净,烘干、冷却后,盖紧瓶塞。
  5. Use 500-1000 mL sampling bottle. First stop cleaning with detergent, then rinse with tap water, and finally rinse with distilled water. After drying and cooling, close the bottle stopper.
  6、关于变压器、油开关或其他充油电气设备,应从下部阀门处取样。取样前油阀门需先用洁净甲级棉纱或布擦净,再放油冲洗洁净。
  6. For transformers, oil switches or other oil-filled electrical equipment, samples should be taken from the lower valve. Before sampling, the oil valve should be cleaned with clean grade A cotton yarn or cloth, and then washed with oil.
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