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公开(公告)号：US10697905B2
公开(公告)日：2020-06-30
申请号：US15558377
申请日：2016-03-17
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Paul David Featonby , Owen John Lloyd Jones , Francis O'Doherty , Emanuele Ronchi , John Somerton
IPC: G01N23/20066 , G01N23/18 , G01T1/178
Abstract: A subsea apparatus and method for scanning a subsea structure to detect differences in density between different parts of the subsea structure is described. A source of gamma radiation and a plurality of detectors arranged to detect gamma radiation emitted by the source are provided. The subsea structure is positioned between the source and the detectors, and the detectors and the source rotated in a fixed relationship to each other about an axis of rotation located between the detectors and the source. The plurality of detectors are arranged in a linear array, the linear array being substantially parallel to the axis of rotation. A pixelated detector array and a source container are also disclosed.
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公开(公告)号：US10451569B2
公开(公告)日：2019-10-22
申请号：US15301519
申请日：2015-03-31
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Paul David Featonby , Emanuele Ronchi
Abstract: An apparatus for scanning a structure to detect density differences between different structure parts, the apparatus includes a source of gamma radiation, a plurality of first detectors arranged to detect radiation emitted by the source along a plurality of respective first paths, a plurality of second detectors arranged to detect radiation emitted by the source along a plurality of respective second paths. Each first and second path is substantially aligned with a respective radius of a circle centered on the source, and an angular separation between at least two neighboring first paths is S. The first and second detectors and the source are arranged for rotation in a fixed relationship with respect to each other, about an axis of rotation located between the source and detectors, wherein the axis of rotation is substantially orthogonal to the circle. An asymmetric collimator block directs gamma radiation from the source to the detectors.
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公开(公告)号：US10139498B2
公开(公告)日：2018-11-27
申请号：US15038489
申请日：2014-12-18
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Andrew Michael Luke Ambrose-Thurman , Kevan Bradley Dales , Emanuele Ronchi , Christopher Thomas Hudson
Abstract: An apparatus for measuring radiation includes a plurality of detectors (2), each detector (2) including: a scintillating material (4) for emitting light in response to incident radiation (6), and a photodetector (8) for receiving light emitted by the scintillating material (4) and outputting an electrical pulse in response to light received from the scintillating material (4), wherein a parameter characterising the electrical pulse is related to an energy associated with the incident radiation (6); and a power supply (10) for supplying power to a plurality of the photodetectors (8). The apparatus reduces the volume of hardware to be transported to the measurement location and therefore provides particular advantages for scanning pipelines and other structures located deep underwater.
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Patent Agency Ranking
公开(公告)号：US10067076B2
公开(公告)日：2018-09-04
申请号：US15101953
申请日：2014-12-18
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Emanuele Ronchi
IPC: G12B13/00 , G01N23/02 , G01N23/046
Abstract: A scanning method, which is a method of identifying a change in the density of an object, includes arranging a source of ionizing radiation and an array of radiation detectors Dn, where n is an integer from 1 to N, capable of detecting the radiation in such a way that radiation counts are counted by the detectors as the source and detectors are rotated around the object. Detectors are arranged in conjugate pairs so that missing data due to a malfunctioning detector may be filled in from its conjugate.
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公开(公告)号：US10003363B2
公开(公告)日：2018-06-19
申请号：US15022322
申请日：2014-10-02
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Marco Panniello , Emanuele Ronchi , Carl Robert Tipton
Abstract: An apparatus for transferring data from a first part of a measuring apparatus to a second part includes a signal transmitting part mounted to the second part and having first antennae for receiving first electrical signals representing data from the second part and emitting electromagnetic radiation corresponding to the first electrical signals, and a signal receiving part mounted to the first part but separated from and rotating relative to the signal transmitting part. The signal receiving part includes a second antenna for receiving electromagnetic radiation and generating second electrical signals corresponding to the first electrical signals. The signal transmitting part and the signal receiving part include respective radiation guide elements adapted to cause less attenuation of the electromagnetic radiation passing through the radiation guide elements than when passing through water, so that the electromagnetic radiation can be continuously transmitted from the signal transmitting part to the signal receiving part.
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公开(公告)号：US09885566B2
公开(公告)日：2018-02-06
申请号：US15324170
申请日：2015-07-23
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Dave Doyle Ferguson, Jnr. , Emanuele Ronchi , Carl Robert Tipton
IPC: G01B15/02 , G01N23/203
CPC classification number: G01B15/02 , C21B7/06 , C21C5/445 , C21C2005/448 , F27D21/0021 , G01N23/203 , G01N2223/1013 , G01N2223/61 , G01N2223/633
Abstract: An apparatus (2) for determining thickness of refractory material (4) lining a metal vessel (6) is disclosed. The apparatus includes a radiation source (16) for emitting radiation through a metal wall of the vessel and into the refractory material, wherein some of the radiation is scattered by the refractory material, and a radiation detector (20) for detecting radiation scattered by the refractory material through the wall of the vessel. A converter provides an output signal dependent on the quantity of radiation scattered by the refractory material through the wall of the vessel and detected by the radiation detector.
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公开(公告)号：US09869647B2
公开(公告)日：2018-01-16
申请号：US15103009
申请日：2014-12-18
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Paul David Featonby , Emanuele Ronchi
CPC classification number: G01N23/08 , G01N23/046 , G01N23/06 , G01N23/18 , G01N2223/1013 , G01N2223/202 , G01N2223/419 , G01N2223/501 , G01N2223/628 , G01N2223/646
Abstract: A scanning method which is a method of identifying a change in the density of an object includes arranging a source of ionizing radiation and an array of radiation detectors Dn, where n is an integer from 1 to N, capable of detecting the radiation in such a way that radiation counts are counted by the detectors as the source and detectors are rotated around the object and normalized counts values are collated in a matrix such that a pattern may be detected within the matrix from which the presence of a change in the density of the object at a location lying on at least one of the radiation paths may be inferred.
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公开(公告)号：US20160141064A1
公开(公告)日：2016-05-19
申请号：US14898754
申请日：2014-06-17
Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventor： Peter Donaldson , Emanuele Ronchi
Abstract: A source container for a radiation source includes a vessel having an external wall defining a space within which is located a shield formed from a radiation absorbing material and defining a cavity for receiving a radiation source, the shield including a window extending from the cavity through the radiation absorbing material, and at least two shutters, each shutter being movable between a closed position in which the shutter covers the window and an open position in which the shutter does not cover the window. The provision of two or more shutters provides a way to emit radiation of different intensities from the same source and container.
Abstract translation: 用于辐射源的源容器包括具有限定空间的外壁的容器，在该容器中定位有由辐射吸收材料形成的屏蔽件并且限定用于接收辐射源的空腔，所述屏蔽件包括从腔体延伸通过 辐射吸收材料和至少两个快门，每个快门可在闭合位置和快门遮盖窗口的打开位置之间移动。 提供两个或多个百叶窗提供了从相同的源和容器发射不同强度的辐射的方法。
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