a car slidable on said rails along the length thereof and adapted for connection to said tube bundle for pulling the same from the heat exchanger or pushing the same therein, andĮ. means on said protruding ends of the rails to secure them to the end of a heat exchanger, in vertical and longitudinal therewith,ĭ. a pair of parallel rails secured to said base frame and extending parallel to the longitudinal dimension thereof, said rails protruding beyond at least one end of the base frame,Ĭ. an open, three-dimensional framework including an upper subframe adapted to be supported from a crane hook, a base frame disposed below the upper subframe and with a usually horizontal orientation, and a set of tension bars pivotally connecting said upper subframe and said base frame said tension bars being spaced from one another athwart said longitudinal dimension to accommodate a tube bundle,ī. A tube bundle extractor for removing a bundle of tubes from a heat exchanger or inserting the same therein, said tube bundle extractor having a longitudinal dimension and comprising:Ī. The actuators move the car through sheave and cable means, and preferably operate oppositely, i.e., when one actuator is pulling the car a paired actuator is following in the opposite direction preparatory to a subsequent pulling step.ġ. ![]() Whereas in the prior art the bundle of tubes was moved by a linear hydraulic actuator mounted on the movable car, the following specification teaches the use of similar actuators having their cylinders mounted on the framework of the extractor so that their extensible piston rods travel parallel to the path of the car. ![]() Herein is disclosed an improvement to the type of tube bundle extractor in which the operative unit is a car movable along a pair of rails supported in alignment with the heat exchanger, the rails being supported on a framework which is usually suspended from a crane hook, the framework being secured to one end of the heat exchanger during a bundle pulling or bundle inserting step. Typically the initial pulling is a difficult job because the tubes have become tightly corroded to the shell. The array of tubes become corroded and clogged after a period of use, either internally, externally, or both, and must be pulled linearly out of the shell for replacement. ![]() The invention operates on a bundle of cooling tubes which in use are disposed within a heat exchanger shell which is typically a longitudinally elongated cylinder disposed with its long axis horizontal and supported well above a floor, on a steel framework.
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