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油顆粒度分析取樣的要求

发表时间：2018-10-24 13:12

1.取樣工具

（1）清潔液的制配：異丙醇（化學純或分析純）、石油醚（分析純）和蒸餾水等要依次經過0.8、0.45和0.15um不同濾徑的濾膜過濾制得。每100ml清潔液中粒徑大于5um的顆粒不多于50個。

（2）取樣瓶（250ml或500ml玻璃瓶、具塞）用自來水和蒸餾水清洗後，再用清潔液清洗，瓶蓋和薄膜襯墊也要用清潔液清洗。經清洗後的取樣瓶，清潔度等級zui小應比被取樣液低兩個數量級。

（3）經檢驗合格的取樣瓶底部留有少許清潔石油醚，在瓶蓋上墊上薄膜，密封取樣瓶以備采樣用。

（4）用于油桶取樣的取樣管，使用前後一定要用清潔液沖洗，備用時要用塑料薄膜封住進出口。

2.取樣部位

? ? ?运行抗燃油和汽轮机油一般都在取样油阀或冷油器出口处取样；基建阶段或机组检修中的油循环，可在回油母管滤网前取样，也可在油箱回油室有效油位的中间位置取样。

3.取樣方法

（1）油桶中取樣。取樣前將油桶的頂部和上蓋用綢布沾石油醚等溶劑擦洗幹淨，然後用取樣管從油桶的上、中、下三個部位共取樣200-300ml。

（2）從設備中取樣。先用綢布將取樣閥擦幹淨，然後放油將取樣閥沖洗幹淨，取樣時，應將取樣瓶的開瓶時間縮短到zui短時間，取樣瓶的瓶口不得與取樣閥接觸，以免被汙染。取樣後，應先移走取樣瓶，蓋好瓶蓋再關好取樣閥。在基建階段和設備大小修時，取樣點應用塑料布搭起小柵，采樣時間應盡量避開施工時間，盡可能減少樣品被汙染的可能性。

上一篇微量水分測定儀的維護與保養

下一篇得利特全自動焦油餾程測定儀

文章分類：技術知識

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DANGEROUS PLACE ON THE SUWO NADA. DANGEROUS PLACE ON THE SUWO NADA. "Richard, it helps the wrong way; I know that story. After hearing that story she is, yes! the one woman of all women to send me this." Another day arose. A courier brought passes for our three or four other wounded to go home as soon as they were fit to travel, and by night they were all gone. At early bedtime came two surgeons of high rank all the way from Johnston's army up in Mississippi. General Austin had asked this favor by telegraph. Harry had been gone thirty-six hours, and Ferry was just asking if he had not yet got back, when the surgeons came in to the room. A pleasantry or two consumed a few moments. Then the surgeon in charge of us told of a symptom or two, to which they responded only "hmm," and began the examination. Miss Harper sent her three nieces away. I lay and listened in the busy stillness. Presently one of the examiners murmured with a certain positiveness to the other, who after a moment's silence replied with conviction; Miss Harper touched our surgeon's arm inquiringly and he looked back in a glad way and nodded. Miss Harper nodded to me; they had located the ball! Now the conversation turned upon men and events of the day, while one of the visitors, with his back to the patient, opened a case of glittering knives. Presently the professional heads came so close together as quite to hide the patient; they spoke once or twice in a manly soothing tone. Miss Harper stroked my temples to keep me down, one of the busy ones spoke again, and lo! the thing was done, there was the ball in the basin. As the men of blood sped through their kind after-work the news flew to and fro; Camille wept,--since she could not hurrah,--Cécile told Charlotte, the heavenly-minded Estelle was confirmed in her faith, Miss Harper's black eyes, after a brief overflow, were keener and kindlier than ever, and as the surgeons spoke the word "done," Ferry asked again if Harry had not got back yet. Pretty soon Harry did arrive, with news of great feats by our cavalry against our old enemy Grierson, in which Austin's brigade had covered themselves with glory, and in which he had had his own share; his hand was swelled as big as his heart. In all the Confederacy no houseful went to sleep that night in sweeter content. I sank into perfect bliss planning a double wedding. "Well, I can name several! I don't call Scott Gholson anybody, but there's Major Harper--No, I'm not talking too loud, Ned isn't hearing a word. Major Harper's so hot against this thing that he brought it up, with me, yesterday on the battlefield." Mrs. Flack held the greater part of herself in a semicircle of red arm. "You are a one," she declared. Then she looked at Mr. Flack, who sat unmoved. "Why don't you laugh. It would do you good. You take everything so serious." "Certainly, captain." The final defeat of polytheism proved, in some respects, an advantage to Neo-Platonism, by compelling it to exchange theological controversy for studies which could be prosecuted, at least for a time, without giving umbrage to the dominant religion. At Alexandria the new spiritualism was associated, on genuinely Platonic principles, with the teaching of geometry by the noble and ill-fated Hypatia. In all the Neo-Platonic schools, whether at Rome, at Alexandria, at Constantinople, or at Athens, the writings of Plato and Aristotle were attentively studied, and made the subject of numerous commentaries, many of which are still extant. This return to the two great masters of idealism was, as we have already said, the most valuable result of the metaphysical revival, and probably contributed more than any other cause to the preservation of their works amidst the general wreck of ancient philosophical literature. Finally, efforts were made to present the doctrine of Plotinus under a more popular or a more scientific form, and to develope it into systematic completeness. [Pg 50] Beyond the "deadening" came a horde of pursuing rebels, firing and yelling like demons. The sight and sound swelled the boys' hearts with the rage of battle. "Why, what in the world have I got on that's military?" asked Billings, looking himself over. "Stephen, you were not used to answer me thus. I charge you, by the authority and love of thy mother, and in the name of the blessed saints, to tell me what has happened." HoME 飞鹰伦理影院ENTER NUMBET 004www.hsbzjx.com.cn
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