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公开(公告)号：EP0057506A1
公开(公告)日：1982-08-11
申请号：EP82300147.4
申请日：1982-01-12
发明人： Gillespie, Arthur Blackley , Watkins, Roger David , Deighton, Michael Oliver , Pike, Roger Barrie , Scott-Kestin, Colin Basil
摘要： An ultrasonic transducer for generating or receiving compression waves in a fluid, comprising an elongated metal body (22) which terminates in an active surface (24), means (21) for exciting or responding to surface acoustic waves, as hereinbefore defined, in the elongated metal body, and means (23, 26) for acoustically isolating all but the active surface of the body from a fluid in which the compression waves are to be generated or from which they are to be received.
Two forms of the transducer are described, one (fig. 1) intendend for total immersion in a fluid, and the other (fig. accompanying abstract) in the form of a rod for insertion in the fluid.摘要翻译： 一种用于在流体中产生或接收压缩波的超声波换能器，包括终止于有效表面（24）的细长金属体（22），用于激励或响应表面声波的装置（21），如上文所定义的， 细长的金属体以及用于将所述体的所有有效表面与其中要产生压缩波或将从其中接收压缩波的流体声学隔离的装置（23,26）。 描述了换能器的两种形式，其中一种（图1）用于完全浸入流体中，另一种（附图摘要）以杆的形式插入流体中。
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公开(公告)号：EP0100621A3
公开(公告)日：1986-03-12
申请号：EP83304106
申请日：1983-07-15
发明人： Watkins, Roger David , Gillespie, Arthur Blackley , Deighton, Michael Oliver , Pike, Roger Barrie , Scott-Kestin, Colin Basil
IPC分类号： B64D15/20
CPC分类号： G01N29/11 , B64D15/20 , G01N2291/023 , G01N2291/0251 , G01N2291/0422 , G01N2291/0427 , Y10S367/908
摘要： An ice detector to detect a layer of ice on a thin solid sheet 14, such as the skin of an aircraft wing, even in the presence of water, comprises two ultrasonic transducers attached to the sheet. The first transducer 10 is adapted to cause propagation of ultrasonic waves through the sheet 14 having their predominant component parallel to the surface of the sheet 14. Such waves will dissipate energy into an ice layer adhering to the surface, but not into air or a liquid layer. The second transducer 30 is adapted to detect the waves propagating in the sheet and to give a signal representative of their amplitude. A discriminator 34 responsive to the signal detects the presence of an ice layer on the surface.
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公开(公告)号：EP0187460B1
公开(公告)日：1990-05-16
申请号：EP85308511.6
申请日：1985-11-22
发明人： Farren, John , Watkins, Roger David
CPC分类号： G01N29/032 , G01N9/24 , G01N23/12 , G01N2291/02433 , G01N2291/02818 , G01N2291/0427 , G01N2291/105
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公开(公告)号：EP0187460A2
公开(公告)日：1986-07-16
申请号：EP85308511.6
申请日：1985-11-22
发明人： Farren, John , Watkins, Roger David
CPC分类号： G01N29/032 , G01N9/24 , G01N23/12 , G01N2291/02433 , G01N2291/02818 , G01N2291/0427 , G01N2291/105
摘要： The nature of the flow pattern in a pipeline carrying both a liquid and a gas depends on the flow rates of the two phases. The flow pattern is characterised by measuring the void fraction or the average density along at least one chord across the pipeline (12) and by determining the distribution of liquid around the periphery of the pipe wall. The void fraction may be measured by the absorption of gamma rays from a source (14); while the peripheral distribution may be determined from the attenuation of ultrasonic plate waves propagating through sectors of the wall between transmitters (18) and receivers (20).
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公开(公告)号：EP0100621A2
公开(公告)日：1984-02-15
申请号：EP83304106.4
申请日：1983-07-15
发明人： Watkins, Roger David , Gillespie, Arthur Blackley , Deighton, Michael Oliver , Pike, Roger Barrie , Scott-Kestin, Colin Basil
IPC分类号： B64D15/20
CPC分类号： G01N29/11 , B64D15/20 , G01N2291/023 , G01N2291/0251 , G01N2291/0422 , G01N2291/0427 , Y10S367/908
摘要： An ice detector to detect a layer of ice on a thin solid sheet 14, such as the skin of an aircraft wing, even in the presence of water, comprises two ultrasonic transducers attached to the sheet. The first transducer 10 is adapted to cause propagation of ultrasonic waves through the sheet 14 having their predominant component parallel to the surface of the sheet 14. Such waves will dissipate energy into an ice layer adhering to the surface, but not into air or a liquid layer. The second transducer 30 is adapted to detect the waves propagating in the sheet and to give a signal representative of their amplitude. A discriminator 34 responsive to the signal detects the presence of an ice layer on the surface.
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公开(公告)号：EP0100621B1
公开(公告)日：1988-09-07
申请号：EP83304106.4
申请日：1983-07-15
发明人： Watkins, Roger David , Gillespie, Arthur Blackley , Deighton, Michael Oliver , Pike, Roger Barrie , Scott-Kestin, Colin Basil
IPC分类号： B64D15/20
CPC分类号： G01N29/11 , B64D15/20 , G01N2291/023 , G01N2291/0251 , G01N2291/0422 , G01N2291/0427 , Y10S367/908
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公开(公告)号：EP0187460A3
公开(公告)日：1987-07-29
申请号：EP85308511
申请日：1985-11-22
发明人： Farren, John , Watkins, Roger David
CPC分类号： G01N29/032 , G01N9/24 , G01N23/12 , G01N2291/02433 , G01N2291/02818 , G01N2291/0427 , G01N2291/105
摘要： The nature of the flow pattern in a pipeline carrying both a liquid and a gas depends on the flow rates of the two phases. The flow pattern is characterised by measuring the void fraction or the average density along at least one chord across the pipeline (12) and by determining the distribution of liquid around the periphery of the pipe wall. The void fraction may be measured by the absorption of gamma rays from a source (14); while the peripheral distribution may be determined from the attenuation of ultrasonic plate waves propagating through sectors of the wall between transmitters (18) and receivers (20).
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公开(公告)号：EP0057506B1
公开(公告)日：1986-01-02
申请号：EP82300147.4
申请日：1982-01-12
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