Loading patent…
AssigneeHoerbiger Kompressortechnik Holding GmbH
InventorsTino Lindner-Silwester, Christian Hold, Andreas Brandl, Christian Kernbichler
Estimating the term…
Due to increasingly strict requirements and regulations, it is becoming more and more important for piston compressors to reduce the amount of leakage of operating medium through the seal of the piston rod. Conventional seals comprising packing rings and/or packing ring combinations always have a certain amount of leakage, both during operation and when at standstill, which is why they are not usable for certain applications, or the complexity involved in such a seal increases considerably. A further problem involving the seals of piston rods relates to transverse movements by piston rods during which the sealing action of the seal must be maintained. Proposed is, therefore, a sealing arrangement according to the principle of a sealing medium barrier providing that the sealing elements 8, 9 are arranged in radial direction at a distance relative to the radial end of the recess 10 that receives the sealing elements 8, 9.
1-16. (canceled)
A sealing arrangement for sealing a reciprocating piston rod (3) of a reciprocating compressor comprising a first (8) and a second sealing element (9) arranged at an axial distance inside a recess (10, 31, 32) of the sealing arrangement (1), and wherein the sealing elements (8, 9) are arranged at one axial end of the recess (10, 31, 32) respectively and in contact with the piston rod (3), and wherein a feed line (7) for a sealing medium is provided in the sealing arrangement (1) that is connected with the recess (10, 31, 32), and wherein the first and the second sealing elements (8, 9) are arranged in radial direction at a distance relative to the radial end of the recess (10, 31, 32) so that the sealing medium acts on the first and second sealing elements (8, 9) axially and at the radial outer circumference area, and including a third sealing element (11) at a first end of the sealing arrangement in a further third recess (30) thereof that is implemented as a packing ring or packing ring combination and a further seventh sealing element (50) is arranged between the first sealing element (8) and third sealing element (11) in a further seventh recess (52) of the sealing arrangement (1), which is implemented as a scraper ring.
Dependencies are inferred from the claim text.