ʻIke leak a mālama i nā dewar cryogenic

ʻO ka ʻike ʻana oDewarsʻO ka maʻamau he ʻelua mau ʻano, ke ʻano vacuum a me ke ʻano kaomi maikaʻi. Dewar (welded insulated gas cylinders) hoʻohana nui i ke ʻano kaomi ʻino o ka helium mass spectrometer leak detector, ʻo ia ka ʻike leak mode vacuum. Hoʻohui i ka mea ʻike leak helium mass spectrometer i ka ʻōnaehana vacuum. No ka loa'a'ole o ka pamu foreline i ka HLT550, hiki iā'oe ke ho'ohana i ka pūnaewele Ho'ohana 'ia ka'ōnaehana vacuum e like me ka pamu mua o ka helium mass spectrometer leak detector. ʻOi aku ka maikaʻi o ka hoʻopili ʻana iā ia ma kahi kokoke i ka puka makani (ʻo ia hoʻi, ka puka makani o ka pūʻulu ʻūhā). E loaʻa i ka ʻōnaehana hoʻoheheʻe ka hui ʻana o ka pump pumping vacuum, no laila ua hoʻopili ʻia ka mea ʻike leak i ke awa o ka ea ma ke kuhikuhi o ka holo ʻana o ka ea, a ua maʻalahi ka loaʻa ʻana o kahi kaomi ʻāpana i hoʻokaʻawale ʻia i ka leak detector, i mea e hoʻokō ai i ka hopena o ka ʻike leak.

ʻO ka waiho ʻana ocryogenic akuapono ka noonoo ana ma keia mau mea:
1. ʻAʻole ʻae ʻia ka hoʻohana ʻia ʻana o nā pahu kinoea hoʻoheheʻe ʻia ʻo Dewar e hoʻohana i ka pae ākea;
2. ʻAʻole pono e pau ke kinoea i loko o ka ʻōmole. ʻAʻole pono e emi ke koena o ke kinoea i hoʻopaʻa ʻia a me nā pahu hau acetylene i hoʻoheheʻe ʻia ma lalo o 0.05MPa; kinoea liquefied, haʻahaʻa-mehana liquefied kinoea a me haʻahaʻa-mehana kinoea kinoea pahu e loaʻa ma ka liʻiliʻi loa 0.5% ~ 1.0% Ka nui o ke kinoea koena;3. Pono e hoʻokomo ʻia ka ʻōmole Dewar acetylene me ka mea pale pale i ka wā e hana ai;
4. ʻAʻole ʻoi aku ka nui o ka mālama ʻana o nā pahu hau ma ke kahua hana ma mua o 20 mau hue ma kahi hoʻokahi; inā ʻoi aku ma mua o 20 mau pahu, e kūkulu ʻia kahi hale kūʻai pahu hau lua;
5. ʻAʻole ʻae ʻia ka hoʻokomo ʻana i ka pahu kinoea i loko o kahi wahi paʻa a kokoke paha i ke kumu wela (koe naʻe nā ʻōmole kaʻa), a pāpā ʻia ka hoʻohana ʻana i kekahi kumu wela e wela ai ka pahu kinoea;
6. ʻO ka mamao ma waena o ke kinoea hoʻopau ʻia, ka pahu hau e kākoʻo ana i ka puhi ahi a me ka lapalapa ahi e ʻoi aku ka nui ma mua o 5m.