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DC 704,DC 705和Convalex 10号油的反流特性,在一挡板抽气系杭中测定。该系统由一个带有冷却帽的6时分馏泵和回纹阱或直角肘管粗成。系统工作在10~(-8)-10~(-9)乇压强下,试验期为3-60天。采取回纹阱时排气台的阱温变化范围为室温至液态氮温,采用肘管肘排气台的阱温变化范围为室温差5℃。利用收集的油的紫外线吸收光谱来测定,发现反流的变化范围在1×10~(-6)毫克/厘米~2·分(对DC 704而雷)与3×10~(-9)毫克/厘米~2分(对Convalex10而言)之间。在设计良好的阱中,油珠反流似乎比气体反流产生的染污现象更严重。@E.G.Fochtman$DC!704,DC 705和Convalex 10号油的反流特性,在一挡板抽气系杭中测定。该系统由一个带有冷却帽的6时分馏泵和回纹阱或直角肘管粗成。系统工作在10~(-8)-10~(-9)乇压强下,试验期为3-60天。采取回纹阱时排气台的阱温变化范围为室温至液态氮温,采用肘管肘排气台的阱温变化范围为室温差5℃。利用收集的油的紫外线吸收光谱来测定,发现反流的变化范围在1×10~(-6)毫克/厘米~2·分(对DC 704而雷)与3×10~(-9)毫克/厘米~2分(对Convalex10而言)之间。在设计良好的阱中,油珠反流似乎比气体反流产生的染污现象更严重。
The backflow characteristics of DC 704, DC 705 and Convalex 10 were measured in a baffled suction system. The system consists of a 6-hour fractionating pump with a cooling cap and a backweb or right-angle elbow. System work in 10 ~ (-8) -10 ~ (-9) Torr pressure, the test period is 3-60 days. Trap wells to take back to trap wells temperature range of room temperature to liquid nitrogen temperature, elbow elbow exhaust station using the trap temperature range of 5 ℃ room temperature difference. Using the UV absorption spectrum of the collected oil, it was found that the reflux ranged from 1 × 10 -6 mg / cm 2 to DC 704 and 3 × 10 -9 mg / Cm ~ 2 points (with Convalex10). In well-designed wells, oil bead reflux appears to be more severe than the pollution caused by gas reflux. @ E.G. Fochtman $ DC! 704, DC 705, and Convalex 10 Reflow characteristics were measured in a baffled suction system. The system consists of a 6-hour fractionating pump with a cooling cap and a backweb or right-angle elbow. System work in 10 ~ (-8) -10 ~ (-9) Torr pressure, the test period is 3-60 days. Trap wells to take back to trap wells temperature range of room temperature to liquid nitrogen temperature, elbow elbow exhaust station using the trap temperature range of 5 ℃ room temperature difference. Using the UV absorption spectrum of the collected oil, it was found that the reflux ranged from 1 × 10 -6 mg / cm 2 to DC 704 and 3 × 10 -9 mg / Cm ~ 2 points (with Convalex10). In well-designed wells, oil bead reflux appears to be more severe than the pollution caused by gas reflux.