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公开(公告)号：US5092176A
公开(公告)日：1992-03-03
申请号：US546283
申请日：1990-06-29
CPC分类号： G01N29/11 , G01N9/24 , G01N2291/0231 , G01N2291/02818 , G01N2291/0422 , G01N2291/101 , G01N2291/2634
摘要： A method of determining low density deposits on the inner surface of a boiler tube comprises the generation of ultrasonic energy which is directed from the outer surface of the tube to the inner surface of the tube. The energy is reflected back and forth between the inner and outer surfaces with each reflection of the inner surface loosing energy by attenuation into any existing low density deposit. The first and fourth reflections are measured and digitized for analysis to determine the amount of attenuation. The amount of attenuation is representative of the low density deposit on the inner surface of the tube. The tube is preferably empty of water to avoid transmission of ultrasonic energy through water in the tube.
摘要翻译： 确定锅炉管内表面上的低密度沉积物的方法包括从管的外表面引导到管的内表面的超声能量的产生。 能量在内表面和外表面之间来回反射，内表面的每个反射通过衰减成任何现有的低密度沉积物而失去能量。 测量第一和第四反射并数字化以进行分析以确定衰减量。 衰减量代表管内表面上的低密度沉积物。 管优选为空的水，以避免超声能量通过管中的水传播。
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公开(公告)号：US4905527A
公开(公告)日：1990-03-06
申请号：US366353
申请日：1989-06-15
CPC分类号： F22B37/00 , F22B37/48 , F24H9/0042
摘要： A remotely operable boiler tube wall cleaning and inspection system including a collapsible "H" frame capable of being inserted through the boiler manway access ports and being positioned at will over the full area of the tube wall.
摘要翻译： 一种可远程操作的锅炉管壁清洁和检查系统，包括可折叠的“H”框架，其能够插入通过锅炉通道进入端口并且将在管壁的整个区域上定位。
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公开(公告)号：US4915073A
公开(公告)日：1990-04-10
申请号：US358988
申请日：1989-05-26
CPC分类号： F24H9/0042 , F22B37/00 , F22B37/48
摘要： A remotely operable boiler tube wall cleaning and inspection system including a collapsible "H" frame capable of being inserted through the boiler manway access ports and being positioned at will over the full area of the tube wall.
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