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1. 发明专利

JPH06300846A SCANNING MECHANISM OF RADIATION TELEVISION DEVICE 失效
公开(公告)号：JPH06300846A
公开(公告)日：1994-10-28
申请号：JP8898893
申请日：1993-04-16
申请人： FUJI ELECTRIC CO LTD , DORYOKURO KAKUNENRYO
发明人： YAMADA TADASHI , SUGAYA TOSHIKATSU , DONOMAE YASUSHI , KASHIMURA YOSHIO
IPC分类号： G01T1/16 , F16M11/12 , G01T1/169 , G01T1/29 , H04N5/222 , H04N7/18
摘要： PURPOSE:To prevent the narrowing of a scanning range by allowing the directional direction of a detector to constantly cross the rotary shaft for scanning. CONSTITUTION:A detector is mounted so that its detection center is mounted on the extended line of a rotary shaft 21 in an inner frame 2 with the rotary shaft 21. The rotary shaft 21 is mounted to an outer frame 3 with a rotary shaft 31 so that it rotates freely but the rotary shaft 31 crosses the rotary shaft 21 of the inner frame 2 and passes the detection center of a directional Y ray detector 1 and the rotary shaft 31 is retained by the outer frame retention stand 4 so that it can rotate freely. The rotary shafts 21 and 32 are connected to inner frame and outer frame drive motors 22 and 32 which are sealed to the outer frame and the outer frame retention stand 4, respectively, the motors pivot-drive the inner frame 2 and the outer frame 3 by a specific sequence and within a specific range based on the control signal from a control part, thus enabling the directional direction of the directional gamma ray detector 1 to scan a specific range.

2. 发明专利

JPH07218693A DECONTAMINATION HOOD DEVICE FOR DRY ICE BLAST 失效
公开(公告)号：JPH07218693A
公开(公告)日：1995-08-18
申请号：JP1379494
申请日：1994-02-07
申请人： DORYOKURO KAKUNENRYO
发明人： DONOMAE YASUSHI , HARA MITSUO
IPC分类号： G21F9/28 , G21F9/02
摘要： PURPOSE:To provide a decontamination hood device capable of preventing scattering of removed decontamination matter to the periphery during decontamination of dry ice blast and preventing secondary contamination by effectively recovering and purifying the radioactive removed matter in the exhaust air. CONSTITUTION:A decontamination hood 10, a dust collector 30 and an exhaust blower 50 are connected with hoses 51 and 52. An object to be decontaminated is put in the decontamination hood 10 and dry ice particles are ejected from a nozzle at high pressure for decontamination processing. The atmosphere in the decontamination hood is sucked and exhausted to send to the dust collector 30 where solid, liquid and gas are separated with a cyclone. The solid and liquid are fallen to recover in a recovery vessel placed in the lower part of the dust collector. The gas passes the demister and HEPA filter arranged in the upper part of the dust collector where the mist in the gas is removed and contaminated matter is filtered and the purified gas is sucked and exhausted out of the dust collector top to the exhaust blower 50. As the demisted gas is filtered with the filter, mist freezing in the filter at very low temperature is avoided. The spent demister and filter are contained in a collection vessel and pressed by compression, which enables reducing volume by compression.

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