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11. 发明授权

US4647255A Pipe bend restrictor 失效
标题翻译：管弯头限流器
公开(公告)号：US4647255A
公开(公告)日：1987-03-03
申请号：US588774
申请日：1984-03-12
申请人： Eric G. Pow
发明人： Eric G. Pow
IPC分类号： B21D9/03 , E21B17/01 , F16L1/04 , B21D9/00
CPC分类号： E21B17/017 , B21D9/03 , F16L1/123 , F16L57/00
摘要： A pipe bend restrictor for controlling the intentional deformation of a pipe to form a bend. The apparatus includes a bullnose for connection to the end of the pipe and a plurality of support washers and a backup ring mounted behind the bullnose and along the length of the pipe being bent. A protection sleeve is positioned over the pipe surface to interface between it and the washers. A specific washer configuration ensures that the washer supporting any given section of pipe pivots about an axis that passes through the axis of the pipe, as near as possible to the section of pipe which it supports.
摘要翻译：用于控制管道的有意变形以形成弯头的管弯管限制器。该装置包括用于连接到管的端部的多头螺栓和多个支撑垫圈以及安装在牛头之后并且沿着被弯曲的管的长度的支撑环。保护套被定位在管表面上以在其与垫圈之间接合。特定的垫圈配置确保支撑任何给定部分管的垫圈围绕穿过管的轴线的轴线枢转，尽可能靠近其支撑的管道部分。

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