变压器油试验的不同取样容器! - 山东变压器油哪家好

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变压器油试验的不同取样容器!

发布时间2019-12-31  来源:http://www.wunqdctk.com

  针对变压器油不同的试验检测项目,需要用不同的容器来取样。
  According to different test items of transformer oil, different containers are needed for sampling.
  一般来说,检测含水量、含气量、溶解气体的色谱分析用到的变压器油油样要用注射器取,其他检测试验所用的油样可以用棕色磨口瓶取。
  Generally speaking, the transformer oil samples used for chromatographic analysis of water content, gas content and dissolved gas shall be taken with syringes, and the oil samples used for other detection tests can be taken with brown ground bottle.
  用注射器取含水量、含气量测试用的油样,主要是为了隔绝空气,含水量、含气量低的油,吸潮吸气速度极快,在空气中取样或用瓶子取样,测定的结果会有较大误差。即使用注射器取样,若注射器密封不良或因磨损过甚而泄漏,也会造成含水量上升4—10mg/kg、含气量上升约1%的误差。用注射器取油中溶解气体色谱分析用油样的目的除了隔绝空气外,还有防止油中溶解气体散失和试验时脱气方便。如果脱气装置对取样容器有特殊要求,那就必须配以专用取样容器了。
山东变压器油
  Take the oil sample for water content and gas content test with syringe, mainly to isolate the air. The oil with low water content and gas content has extremely fast moisture absorption and suction speed. When sampling in the air or bottle, the measurement result will have a large error. That is to say, if the syringe is not well sealed or leaked due to excessive wear, the water content will increase by 4-10mg / kg and the air content will increase by about 1%. The purpose of chromatographic analysis of dissolved gas in oil with syringe is not only to isolate air, but also to prevent the loss of dissolved gas in oil and to facilitate degassing during test. If the degassing device has special requirements for the sampling container, it must be equipped with a special sampling container.
  而用棕色磨口瓶取样的优点有两个:一是能遮光;二是密封相对较好而又开启方便。对一般测试项目来说,油样见不见光,对测试结果影响不大,但对于介质损耗因数来说,油样见光后测试结果与不见光时明显不同,不用棕色瓶取样,测试结果是不准确的;即使用棕色瓶取样,也不宜在强光下长时间照射。
  There are two advantages of sampling with brown ground bottle: first, it can block the light; second, it is relatively well sealed and easy to open. For general test items, the oil sample is invisible, which has little impact on the test results, but for the dielectric loss factor, the test results after the oil sample is visible are significantly different from those when it is invisible, and the test results are not accurate without sampling in brown bottle; that is to say, sampling in brown bottle is not suitable for long-term irradiation in strong light.
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