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US 5,079,837 AGranted
Repair lining and method for repairing a heat exchanger tube with the repair lining
AssigneeSiemes Aktiengesellschaft
InventorWalter Vanselow
Life of this patent
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AssigneeSiemes Aktiengesellschaft
InventorWalter Vanselow
Estimating the term…
A repair lining for a heat exchanger tube includes a sleeve having ends. A tubular basic body is disposed in the sleeve and has ends protruding beyond the ends of the sleeve. One of the ends of the basic body has a top part being supported on the sleeve and the other of the ends of the basic body has a thread formed thereon. A nut is disposed on the thread for bracing the repair lining in the heat exchanger tube. At least one clamping ring is disposed on one of the ends of the basic body between the sleeve and the top part, and at least one clamping ring is disposed on the other of the ends of the basic body between the sleeve and the nut. The clamping rings have a conical shape in an initial relaxed condition being changed into a flattened shape with an enlarged diameter by relative motion between the basic body and the sleeve. A method for repairing a heat exchanger tube with a repair lining includes introducing a repair lining into the heat exchanger tube, and tightening the nut with a tool for axially enlarging the clamping rings and substantially fluid-tightly connecting the basic body to the heat exchanger tube.
Method for repairing a heat exchanger tube with a repair lining,
Method for repairing a heat exchanger tube with a repair lining,
Repair lining for a heat exchanger tube having an interior and a surface defect, comprising a hollow sleeve, a hollow basic body for conducting fluid in said sleeve having a part supported on said sleeve and a thread opposite said part, a nut on said thread, at least one first clamping ring being disposed on said basic body between said sleeve and said top part, and at least one second clamping ring being disposed on said basic body between said sleeve and said nut, said first and second clamping rings having a conical shape in an initial relaxed condition being changed into a flattened shape with an enlarged diameter by relative motion between said basic body and said sleeve, said repair lining being movable along the interior of said heat exchanger tube such that the defect is disposed between said first and second clamping rings and sealed off from said ends of said basic body.
Repair lining for a heat exchanger tube having an interior and a surface defect, comprising a hollow sleeve having ends, a tubular basic body for conducting fluid disposed in said sleeve and having ends protruding beyond said ends of said sleeve, one of said ends of said basic body having a top part being supported on said sleeve and the other of said ends of said basic body having a thread formed thereon, a nut disposed on said thread for bracing the repair lining in the heat exchanger tube, at least one first clamping ring being disposed on one of said ends of said basic body between said sleeve and said top part, and at least one second clamping ring being disposed on the other of said ends of said basic body between said sleeve and said nut, said first and second clamping rings having a conical shape in an initial relaxed condition being changed into a flattened shape with an enlarged diameter by relative motion between said basic body and said sleeve, said repair lining being movable along the interior of said heat exchanger tube such that the defect is disposed between said first and second clamping rings and sealed off from said ends of said basic body.
Dependencies are inferred from the claim text.