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1. 发明公开

KR1020020039251A 열교환기 슬리이브단 확장장치 失效
标题翻译：热交换器SLEEVE END EXPANDER
公开(公告)号：KR1020020039251A
公开(公告)日：2002-05-25
申请号：KR1020010071798
申请日：2001-11-19
申请人： 아레바 인코포레이티드
发明人： 샤퍼,브루스더블유.
IPC分类号： B21D39/08
CPC分类号： B23P6/00 , B23P15/26 , F28F11/02 , Y10T29/49352 , Y10T29/49732 , Y10T29/53113 , Y10T29/53122
摘要： PURPOSE: A method and an apparatus are provided to solve problems associated with sleeving tube repairs and others by minimizing the step between the inside diameter of a soft metal heat exchanger tube and a sleeve used to repair a failing section of the tube where the known devices used for sleeve end roll expansion cannot reach. CONSTITUTION: The tube repair apparatus for expanding the ends of a previously installed sleeve into a portion of heat exchanger tubing inaccessibly located in the heat exchanger comprises a series of tube sections connected together to form a length sufficient to extend down to the inaccessibly located defective tubing section; a series of pull rods(26,26') connected together and located within the series of tube sections; an expandable bladder positioned between an end of the tube sections and a moveable threaded stop, which is attached to one end of the series of pull rods; and means for pulling the series of pull rods to compress the expandable bladder, causing it to increase in diameter, wherein the pulling means includes a hydraulic cylinders(12) having on one end the series of tube sections rigidly connected thereto and, on the opposite end of the series of pull rods extending into the hydraulic cylinder to move therethrough in response to hydraulic pressure applied to the hydraulic cylinder to thus compress the bladder, the tube repair apparatus includes a repair sleeve of predetermined length located in the defective portion of the heat exchanger tubing and a hard stopper located on the series of tube sections to be aligned with an end of the sleeve to prevent further insertion of the bladder into the sleeve, the hard stopper(36) is adjustable and is set to align the end of the bladder connected to the pull rods with an end of the sleeve opposite the end aligned with the hard stopper, and the bladder is plastic and expands in diameter in response to compression by the pull rods as per Poisson's ratio.
摘要翻译：目的：提供一种方法和装置，用于通过最小化软金属热交换器管的内径和用于修复管的故障部分的套筒之间的步骤来最大限度地解决与套管维修相关的问题，其中已知装置用于套管端辊膨胀不能达到。构造：用于将先前安装的套筒的端部扩展成不可接近地位于热交换器中的热交换器管道的一部分的管修复设备包括连接在一起的一系列管段，以形成足以向下延伸到不可接近定位的有缺陷管部分; 连接在一起并位于一系列管段内的一系列拉杆（26,26'）; 位于所述管部分的端部和可移动螺纹止动件之间的可膨胀囊，其连接到所述一系列拉杆的一端; 以及用于拉动一系列拉杆以压缩可膨胀气囊的装置，使其直径增加，其中牵引装置包括液压缸（12），其一端具有与其刚性连接的一系列管段，并且在相对的延伸到液压缸中的一系列拉杆的端部响应于施加到液压缸的液压而移动通过，从而压缩气囊，管修复装置包括位于热的缺陷部分中的预定长度的修复套筒交换器管和位于所述一系列管部分上的硬塞以与套筒的端部对准以防止囊进一步插入套筒中，硬塞子（36）是可调节的并且被设置成使气囊连接到拉杆，套筒的一端与硬质塞子对准，并且囊状物是塑性的并且响应于由拉杆按照泊松比进行压缩。

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