Connection arrangement for two pipes carrying hot fluids, for example internal combustion engine exhaust gases
First Claim
1. A connection arrangement to connect two pipes (3, 4;
- 24,
25), particularly for conveying hot fluids, especially exhaust gases from an internal combustion engine.in which one of the pipes has an end portion facing the end portion of the other pipe, said connection arrangement permitting relative movement of the two pipes with respect to each other in axial, lateral and angular direction, while maintaining a sealed connection preventing escape of fluid to ambient space,comprisingmeans for defining a ring chamber or space (5,
26) surrounding the end portions of the pipes (3, 4;
24,
25);
at least one sealing pillow (6, 7;
16, 17;
27,
28) located in said ring chamber or space,the material of said sealing pillow having damped springy characteristics,said at least one resilient springy sealing pillow being retained in said chamber or space in a predetermined axial and radial position;
the facing ends of the pipes being radially supported and located in position in at least approximate alignment with respect to each other by said at least one resilient or springy sealing pillow retained in said ring chamber (5,
26), anda sealing foil (14, 15;
19,
20) embedded within the material of the pillow and extending over the entire radial region of said space or chamber (5).
1 Assignment
0 Petitions
Accused Products
Abstract
To connect two pipes which may carry high-temperature potentially corrosive fluids, for example exhaust gases from an internal combustion engine, while permitting flexing of the pipes with respect to each other in torsion or twist, bending or lateral shift, while maintaining a sealed connection, a ring chamber is formed in the region of the pipe ends, by an overlapping pipe end portion of the like, an external sleeve, or overlapping flange construction, which retains therein a sealing and support pillow of ceramic or metal materials in form of fibers, filaments or the like, felted, matted, woven, knitted and compressed together; a metal sealing foil, for example of aluminum or specialty steel, crinkled or creased and preferably formed with expansion/contraction undulations, is located within the pillow. More than one pillow may be used, and the pillows may be located against one pipe, overlapped by the end portion of another, with a heat insulation therebetween, or spanning a gap of two butt-aligned pipes, axially retained in position by flanges on the pipe ends and/or rim portions of a surrounding sleeve or clamp.
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Citations
19 Claims
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1. A connection arrangement to connect two pipes (3, 4;
- 24,
25), particularly for conveying hot fluids, especially exhaust gases from an internal combustion engine.in which one of the pipes has an end portion facing the end portion of the other pipe, said connection arrangement permitting relative movement of the two pipes with respect to each other in axial, lateral and angular direction, while maintaining a sealed connection preventing escape of fluid to ambient space, comprising means for defining a ring chamber or space (5,
26) surrounding the end portions of the pipes (3, 4;
24,
25);at least one sealing pillow (6, 7;
16, 17;
27,
28) located in said ring chamber or space,the material of said sealing pillow having damped springy characteristics, said at least one resilient springy sealing pillow being retained in said chamber or space in a predetermined axial and radial position; the facing ends of the pipes being radially supported and located in position in at least approximate alignment with respect to each other by said at least one resilient or springy sealing pillow retained in said ring chamber (5,
26), anda sealing foil (14, 15;
19,
20) embedded within the material of the pillow and extending over the entire radial region of said space or chamber (5). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- 24,
Specification