Abstract: An assembly for cleaning a tube bundle including a plurality of elongated tubular lances movable within an outer shell. A flexible fluid hose within the shell extends to the manifold in the lower portion of the assembly, which in turn transmits pressurized fluid to the plurality of lances. The hydraulic motor powers a rack and pinion assembly to reciprocate the lances, while a plurality of spring biased plates each cover a slot in the lance housing. The assembly of the present invention utilizes a receiving manifold and a lance manifold connected by a plurality of nipples for a desirable low pressure drop. A pair of series connected valves allows the hydraulic fluid flow and the pressure to the drive motor to be separated controlled.

Abstract: Apparatus for extracting a heat exchanger tube assembly from a heat exchanger shell includes an extractor frame, an extractor body moveable with respect to the frame, and powered extraction members for literally moving the extractor body with respect to the frame. A plurality of rollers are provided each supporting the extractor frame and extractor body, and a plurality of respective drive motors each power one of the rollers for manipulating the apparatus relative to the heat exchanger shell. Both forward and reverse rotation of a respective roller and pivotable rotation of the roller with respect to the frame for steering capability of the apparatus may be provided by control means positioned such that the operator need not be carried by the assembly. A plurality of hydraulic cylinders each secured to the extractor frame are provided for elevating the extractor body to a desired position with respect to the heat exchanger shell for extraction and reinsertion of the tube assembly.

Abstract: An assembly for cleaning a tube bundle includes a plurality of elongate tubular lances movable within an outer shell. A flexible fluid hose within the shell extends from an input port in the upper portion of the assembly to the manifold in the lower portion of the assembly, which in turn transmits pressurized fluid to the plurality of lances. The hydraulic motor powers a rack and pinion assembly to reciprocate the lances, while a plurality of spring biased plates each cover a slot in the lance housing. The assembly of the present invention utilizes a receiving manifold and a lance manifold connected by a plurality of nipples for a desirable low pressure drop. A pair of series connected valves allows the hydraulic fluid flow and the pressure to the drive motor to be separated controlled.

Abstract: Apparatus for extracting a heat exchanger tube assembly from a heat exchanger shell includes an extractor frame, an extractor body moveable with respect to the frame, and powered extraction members for literally moving the extractor body with respect to the frame. A plurality of rollers are provided each supporting the extractor frame and extractor body, and a plurality of respective drive motors each power one of the rollers for manipulating the apparatus relative to the heat exchanger shell. Both forward and reverse rotation of a respective roller and pivotable rotation of the roller with respect to the frame for steering capability of the apparatus may be provided by control means positioned such that the operator need not be carried by the assembly. A plurality of hydraulic cylinders each secured to the extractor frame are provided for elevating the extractor body to a desired position with respect to the heat exchanger shell for extraction and reinsertion of the tube assembly.

Abstract: Apparatus for extracting a heat exchanger tube assembly from a heat exchanger shell includes an extractor frame, an extractor body moveable with respect to the frame, and powered extraction members for literally moving the extractor body with respect to the frame. A plurality of rollers are provided each supporting the extractor frame and extractor body, and a plurality of respective drive motors each power one of the rollers for manipulating the apparatus relative to the heat exchanger shell. Both forward and reverse rotation of a respective roller and pivotable rotation of the roller with respect to the frame for steering capability of the apparatus may be provided by control means positioned such that the operator need not be carried by the assembly. A plurality of hydraulic cylinders each secured to the extractor frame are provided for elevating the extractor body to a desired position with respect to the heat exchanger shell for extraction and reinsertion of the tube assembly.