JP2870728B
PROBLEM TO BE SOLVED: To provide an ultrasonic detecting method in which not only a small leak scale but also a large leak scale can be detected with high sensitivity and at an early stage. SOLUTION: A plurality of transmitting/receiving sensors 6 are installed in the circumferential direction on th...
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| creator | YOSHIZAWA SHUNJI SHINDO YOSHIHISA |
| description | PROBLEM TO BE SOLVED: To provide an ultrasonic detecting method in which not only a small leak scale but also a large leak scale can be detected with high sensitivity and at an early stage. SOLUTION: A plurality of transmitting/receiving sensors 6 are installed in the circumferential direction on the outer face of a trunk part at a heat exchanger 1 so as to correspond to a plurality of chambers 11 which are partitioned and formed in the circumferential direction inside the trunk, a plurality of stages of the sensors are installed in the length direction, and an operation in which burst wave-shaped ultrasonic waves at the same frequency are transmitted respectively from transmitting parts at the respective transmitting/receiving sensors 6 in the circumferential direction so as to be received by receiving parts is repeated. In addition, after the operation has made a tour, the operation is repeated by using burst wave-shaped ultrasonic waves at different frequencies, the burst wave-shaped ultrasonic waves are passed through hydrogen air bubbles generated by jetting high-pressure vapor into liquid sodium flowing inside the trunk at the heat exchanger 1, attenuated burst wave-shaped ultrasonic waves are received by a reception part at any transmitting/receiving sensor, and a water leak is detected. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JP2870728BB2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JP2870728BB2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JP2870728BB23</originalsourceid><addsrcrecordid>eNrjZODyCjCyMDcwN7Jw4mFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8QgNTkbGxKgBACmFG38</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>JP2870728B</title><source>esp@cenet</source><creator>YOSHIZAWA SHUNJI ; SHINDO YOSHIHISA</creator><creatorcontrib>YOSHIZAWA SHUNJI ; SHINDO YOSHIHISA</creatorcontrib><description>PROBLEM TO BE SOLVED: To provide an ultrasonic detecting method in which not only a small leak scale but also a large leak scale can be detected with high sensitivity and at an early stage. SOLUTION: A plurality of transmitting/receiving sensors 6 are installed in the circumferential direction on the outer face of a trunk part at a heat exchanger 1 so as to correspond to a plurality of chambers 11 which are partitioned and formed in the circumferential direction inside the trunk, a plurality of stages of the sensors are installed in the length direction, and an operation in which burst wave-shaped ultrasonic waves at the same frequency are transmitted respectively from transmitting parts at the respective transmitting/receiving sensors 6 in the circumferential direction so as to be received by receiving parts is repeated. In addition, after the operation has made a tour, the operation is repeated by using burst wave-shaped ultrasonic waves at different frequencies, the burst wave-shaped ultrasonic waves are passed through hydrogen air bubbles generated by jetting high-pressure vapor into liquid sodium flowing inside the trunk at the heat exchanger 1, attenuated burst wave-shaped ultrasonic waves are received by a reception part at any transmitting/receiving sensor, and a water leak is detected.</description><edition>6</edition><language>eng</language><subject>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES ; MEASURING ; NUCLEAR ENGINEERING ; NUCLEAR PHYSICS ; NUCLEAR REACTORS ; PHYSICS ; TESTING ; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES ; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</subject><creationdate>1999</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19990317&DB=EPODOC&CC=JP&NR=2870728B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19990317&DB=EPODOC&CC=JP&NR=2870728B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YOSHIZAWA SHUNJI</creatorcontrib><creatorcontrib>SHINDO YOSHIHISA</creatorcontrib><title>JP2870728B</title><description>PROBLEM TO BE SOLVED: To provide an ultrasonic detecting method in which not only a small leak scale but also a large leak scale can be detected with high sensitivity and at an early stage. SOLUTION: A plurality of transmitting/receiving sensors 6 are installed in the circumferential direction on the outer face of a trunk part at a heat exchanger 1 so as to correspond to a plurality of chambers 11 which are partitioned and formed in the circumferential direction inside the trunk, a plurality of stages of the sensors are installed in the length direction, and an operation in which burst wave-shaped ultrasonic waves at the same frequency are transmitted respectively from transmitting parts at the respective transmitting/receiving sensors 6 in the circumferential direction so as to be received by receiving parts is repeated. In addition, after the operation has made a tour, the operation is repeated by using burst wave-shaped ultrasonic waves at different frequencies, the burst wave-shaped ultrasonic waves are passed through hydrogen air bubbles generated by jetting high-pressure vapor into liquid sodium flowing inside the trunk at the heat exchanger 1, attenuated burst wave-shaped ultrasonic waves are received by a reception part at any transmitting/receiving sensor, and a water leak is detected.</description><subject>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</subject><subject>MEASURING</subject><subject>NUCLEAR ENGINEERING</subject><subject>NUCLEAR PHYSICS</subject><subject>NUCLEAR REACTORS</subject><subject>PHYSICS</subject><subject>TESTING</subject><subject>TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES</subject><subject>TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1999</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZODyCjCyMDcwN7Jw4mFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8QgNTkbGxKgBACmFG38</recordid><startdate>19990317</startdate><enddate>19990317</enddate><creator>YOSHIZAWA SHUNJI</creator><creator>SHINDO YOSHIHISA</creator><scope>EVB</scope></search><sort><creationdate>19990317</creationdate><title>JP2870728B</title><author>YOSHIZAWA SHUNJI ; SHINDO YOSHIHISA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2870728BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1999</creationdate><topic>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</topic><topic>MEASURING</topic><topic>NUCLEAR ENGINEERING</topic><topic>NUCLEAR PHYSICS</topic><topic>NUCLEAR REACTORS</topic><topic>PHYSICS</topic><topic>TESTING</topic><topic>TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES</topic><topic>TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</topic><toplevel>online_resources</toplevel><creatorcontrib>YOSHIZAWA SHUNJI</creatorcontrib><creatorcontrib>SHINDO YOSHIHISA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YOSHIZAWA SHUNJI</au><au>SHINDO YOSHIHISA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>JP2870728B</title><date>1999-03-17</date><risdate>1999</risdate><abstract>PROBLEM TO BE SOLVED: To provide an ultrasonic detecting method in which not only a small leak scale but also a large leak scale can be detected with high sensitivity and at an early stage. SOLUTION: A plurality of transmitting/receiving sensors 6 are installed in the circumferential direction on the outer face of a trunk part at a heat exchanger 1 so as to correspond to a plurality of chambers 11 which are partitioned and formed in the circumferential direction inside the trunk, a plurality of stages of the sensors are installed in the length direction, and an operation in which burst wave-shaped ultrasonic waves at the same frequency are transmitted respectively from transmitting parts at the respective transmitting/receiving sensors 6 in the circumferential direction so as to be received by receiving parts is repeated. In addition, after the operation has made a tour, the operation is repeated by using burst wave-shaped ultrasonic waves at different frequencies, the burst wave-shaped ultrasonic waves are passed through hydrogen air bubbles generated by jetting high-pressure vapor into liquid sodium flowing inside the trunk at the heat exchanger 1, attenuated burst wave-shaped ultrasonic waves are received by a reception part at any transmitting/receiving sensor, and a water leak is detected.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR |
| title | JP2870728B |
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