Volume 28 Issue 5
May  2013
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LING Gui-long, CAI Guo-biao, ZHANG Jian-hua. Oil-free vacuum system design based on vacuum plume experiment[J]. Journal of Aerospace Power, 2013, 28(5): 1173-1179.
Citation: LING Gui-long, CAI Guo-biao, ZHANG Jian-hua. Oil-free vacuum system design based on vacuum plume experiment[J]. Journal of Aerospace Power, 2013, 28(5): 1173-1179.

Oil-free vacuum system design based on vacuum plume experiment

  • Received Date: 2012-05-29
  • Publish Date: 2013-05-28
  • An oil-free vacuum system for vacuum plume and thermal vacuum experiments was established.The composition of vacuum system,scheme design and working modes were described in detail.The vacuum pumping time under different working modes was calculated.The vessel ultimate pumping speed tests were conducted on the roots pump,molecular pump and cryopump,respectively.The test results show that the technical indexes of the instruments are attained.Finally,the pressure maintenance ability of the vacuum vessel was measured.The average pressure rise rate of the vessel is 0.111Pa/h,corresponding to an average leakage rate of 7.24Pa·L/s,which demonstrates that the vacuum vessel has achieved a high process level.According to the experimental requirements and the selection of failure mode,the vacuum system has several working modes to choose,which increases the practicality and economy of the vacuum plume investigation experiment system.

     

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