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    • 1. 发明授权
    • Hybrid expansion apparatus and process
    • 混合式膨胀装置及工艺
    • US4580426A
    • 1986-04-08
    • US584225
    • 1984-02-27
    • Paolo R. Zafred
    • Paolo R. Zafred
    • F28F11/06B21D39/06B21D39/10B21D39/20F22B37/02F28F11/00B21D39/08B23P11/02
    • B21D39/06B21D39/10B21D39/20Y10T29/49805Y10T29/4994Y10T29/53122
    • An improved sleeving apparatus and process capable of simultaneously expanding and rolling an interference joint between a reinforcing sleeve and a heat exchanger tube is disclosed herein. The apparatus generally comprises an elongated housing onto which upper and lower rollers are mounted, and upper and lower hydraulic expanders capable of applying a radially expansive force onto a sleeve across the length of the rollers. The rolls in the rollers are driven by a common drive shaft which is coupled to a hydraulic motor. The apparatus includes a torque controller including a torque sensor and a computer for controlling the torque, and hence the rolling pressure, that the rollers place on the inside surface of the sleeve. The torque sensor is mechanically connected to the output of the driving means of the drive shaft, and electrically connected to the microcomputer. The microcomputer is connected to the control valve of the power supply of the hydraulic motor driving the drive shaft. The torque value programmed into the microcomputer of the torque controller may be chosen so that the rolling pressure exerted by the rolls elongates the metal in the sleeve at the interference joint to the same extent to which this metal is contracted by the hydraulic expanders, thereby resulting in a substantially stress-free joint.
    • 本文公开了一种改进的套管装置和方法,其能够同时地扩张和滚动加强套筒和热交换器管之间的干涉接头。 该装置通常包括一个细长的壳体,上部和下部滚子安装在该细长的外壳上,上部和下部液压膨胀机能够在整个滚筒的长度上将径向膨胀的力施加到套筒上。 辊中的辊由与液压马达连接的公共驱动轴驱动。 该装置包括扭矩控制器,该扭矩控制器包括转矩传感器和用于控制辊位于套筒内表面上的转矩以及因此滚动压力的计算机。 扭矩传感器机械地连接到驱动轴的驱动装置的输出端,并电连接到微型计算机。 微型计算机连接到驱动驱动轴的液压马达的电源的控制阀。 可以选择编程到扭矩控制器的微型计算机中的扭矩值,使得由辊施加的轧制压力使干涉接头处的套筒中的金属伸长到与金属由液压膨胀机收缩的程度相同的程度,从而导致 在基本上无应力的接头中。
    • 10. 发明授权
    • Sleeving of steam generators
    • 蒸汽发生器套管
    • US4771526A
    • 1988-09-20
    • US785291
    • 1985-10-07
    • Thomas E. ArzentiWilliam E. Pirl
    • Thomas E. ArzentiWilliam E. Pirl
    • F28F11/06B23P19/02F22B37/00F22B37/02F28F11/00G21D1/00B21D53/00B23P19/04
    • F22B37/003B23P19/022Y10T29/49352Y10T29/53113Y10T29/5383Y10T29/53839
    • A tool for inserting sleeve blanks in damaged steam-generator tubes of light weight capable of being manipulated by ROSA, a remotely operated service arm. ROSA permits the tool to be attached externally of the channel head of the steam generator.The tool includes a fixed gripper and a moveable gripper. The gripping member of each gripper is a flexible sheet or bladder which conforms readily to the surface being engaged. For insertion, the sleeve blank is mounted on a mandrel. The insertion is carried out by operating the grippers repeatedly through the following cycle until the sleeve blank is inserted into the damaged tube:(a) The moveable gripper is set in the lowermost position.(b) The fixed gripper is open.(c) The moveable gripper engages the sleeving assembly.(d) The moveable gripper raises the sleeving assembly to the uppermost position.(e) The sleeving assembly is engaged by the fixed gripper.(f) The moveable gripper is disengaged from the sleeving assembly.(g) The moveable gripper is returned to the lowermost position to start a succeeding cycle.For positioning, the tool includes a closed-circuit TV unit for centering the tool with reference to a tube other than the damaged tube and another closed-circuit TV unit for monitoring the insertion of the sleeve blank.
    • 用于将套筒坯料插入损坏的重量轻的蒸汽发生器管中的工具,能够由遥控操作臂ROSA操纵。 ROSA允许将工具连接到蒸汽发生器的通道头的外部。 该工具包括一个固定夹具和一个可移动夹具。 每个夹持器的夹持构件是柔性片或囊,容易地与被接合的表面相一致。 为了插入,套筒坯件安装在心轴上。 通过以下循环反复操作夹具来进行插入,直到套筒坯件插入损坏的管中:(a)可移动的夹持器被设置在最低位置。 (b)固定夹具打开。 (c)可移动夹具接合套管组件。 (d)可移动的夹具将套管组件提升到最高位置。 (e)套筒组件由固定夹具接合。 (f)可移动的夹持器从套管组件脱离。 (g)可移动夹具返回到最低位置以开始后续循环。 为了定位,该工具包括一个闭路电视单元,用于相对于损坏的管以外的管对准该工具,另一个闭路电视单元用于监视套筒坯的插入。