Seal arrangement

1. A seal arrangement ( 1 ) for piston compressors comprising:

a deformable ring carrier ( 2 ) as well as a first and a second continuous sealing ring ( 3 a , 3 b ),

wherein the ring carrier ( 2 ) has a longitudinal axis (L) extending perpendicular to its peripheral direction,

wherein the ring carrier ( 2 ) has a gap ( 2 i ) with clearance in its peripheral direction,

wherein each sealing ring ( 3 a , 3 b ) has a longitudinal axis ( 3 c , 3 d ) extending perpendicular to its peripheral direction, and wherein the sealing rings ( 3 a , 3 b ) are arranged such that the ring carrier ( 2 ) surrounds them from the outside, and wherein the two sealing rings ( 3 a , 3 b ) are arranged next to one another in the direction of extent of the longitudinal axis (L),

wherein the ring carrier ( 2 ) and the sealing rings ( 3 a , 3 b ) are designed mutually adapted such that the first sealing ring ( 3 a ) contacts a first side wall ( 2 d ) of the ring carrier ( 2 ) at the one side and forms a first gap (S 1 ) toward the ring carrier ( 2 ) at the side disposed opposite with respect to the longitudinal axis ( 3 c ) of the first sealing ring ( 3 a ),

wherein the second sealing ring ( 3 b ) mirror-inverted contacts a second side wall ( 2 l ) of the ring carrier ( 2 ) at the one side and forms a second gap (S 2 ) toward the ring carrier ( 2 ) on the side disposed opposite with respect to the longitudinal axis ( 3 d ) of the second sealing ring ( 3 b ), and

wherein the first and second side walls ( 2 d , 2 l ) are arranged opposite with respect to the longitudinal axis (L) so that the ring carrier ( 2 ) can effect a respective preload force ( 5 a , 5 b) on the first or second sealing ring ( 3 a , 3 b ) respectively via the first or second side walls ( 2 d , 2 l ) respectively, wherein the preload forces ( 5 a , 5 b ) extend in an opposite manner.

2. A seal arrangement ( 1 ) in accordance with claim 1 , wherein the first and second sealing rings ( 3 a , 3 b ) are arranged directly next to one another in the direction of extent of the longitudinal axis (L).

3. A seal arrangement ( 1 ) in accordance with claim 1 , wherein the ring carrier ( 2 ) has an intermediate web ( 2 k ) between the first and second sealing rings ( 3 a , 3 b ) in the direction of extent of the longitudinal axis (L).

4. A seal arrangement ( 1 ) in accordance with claim 3 , wherein the intermediate web ( 2 k ) has an inner diameter which substantially corresponds to the inner diameter (R) of the first and second sealing rings ( 3 a , 3 b ).

5. A seal arrangement ( 1 ) in accordance with claim 1 ,

wherein the first and/or second sealing ring ( 3 a , 3 b ) has/have the same width ( 3 k ) along the total periphery; and

wherein the ring carrier ( 2 ) has a first and/or second side wall ( 2 e , 2 m ) spaced apart with respect to the first and/or second sealing ring ( 3 a , 3 b ) in the region of the first and/or second gap (S 1 , S 2 ).

6. A seal arrangement ( 1 ) in accordance with claim 1 ,

wherein the first contacting side wall ( 2 d ) and a first spaced apart side wall ( 2 e ) together extend in a circular or oval manner;

wherein the second contacting side wall ( 2 l ) and a second spaced apart side wall ( 2 m ) together extend in a circular or oval manner;

wherein the first and/or second sealing ring ( 3 a , 3 b ) has/have such a variable width ( 3 k ) in the peripheral direction that the first gap (S 1 ) is formed between the first sealing ring ( 3 a ) and the first spaced apart side wall ( 2 e ); and

wherein the second gap (S 2 ) is formed between the second sealing ring ( 3 b ) and the second spaced apart wall ( 2 m ).

7. A seal arrangement ( 1 ) in accordance with claim 5 ,

wherein a first center /Z 1 ) as well as a radius of curvature R 2 define a semicircular extent of the first contacting side wall ( 2 d );

wherein a second center (Z 2 ) as well as a radius of curvature R 3 define a semicircular extent of the first spaced apart side wall ( 2 e ); and

wherein the first and second centers (Z 1 , Z 2 ) are mutually spaced apart.

8. A seal arrangement ( 1 ) in accordance with claim 7 , wherein the two radii of curvature R 2 and R 3 are identical.

9. A seal arrangement ( 1 ) in accordance with claim 7 , wherein the distance between the first and second centers (Z 1 , Z 2 ) lies in the range between 0.1 and 10 mm.

10. A seal arrangement ( 1 ) in accordance with claim 1 , wherein the first and/or second gap (S 1 , S 2 ) has/have a maximum width in the range from 0.1 mm to 10 mm.

11. A seal arrangement ( 1 ) in accordance with claim 1 , wherein the sealing rings ( 3 a , 3 b ) are composed of a wearable material, in particular of a metal.

12. A seal arrangement ( 1 ) in accordance with claim 1 ,

wherein the first and/or second contacting side wall ( 2 d , 2 l ) extend/extends over an angle of 180 degrees or approximately 180 degrees; and

wherein the first and/or second gaps (S 1 , S 2 ) extends/extend over an angle of 180 degrees or approximately 180 degrees.

13. A seal arrangement ( 1 ) in accordance with claim 1 , wherein the sealing ring ( 3 a , 3 b ) has an inner radius (R) which is larger than or equal to the outer radius of a piston rod ( 6 ).

14. A seal arrangement ( 1 ) in accordance with any claim 1 , wherein a clamping ring ( 4 ) surrounds the ring carrier ( 2 ) from the outside in the peripheral direction.

15. A seal arrangement ( 1 ) in accordance with claim 1 , wherein the ring carrier ( 2 ) is composed of a metal.

16. A seal arrangement ( 1 ) in accordance with claim 1 , further comprising a security against rotation ( 10 ) which is designed such that a rotation of the first sealing ring ( 3 a ) and/or of the second sealing ring ( 3 b ) with respect to the ring carrier ( 2 ) is prevented.

17. A seal arrangement ( 1 ) in accordance with claim 16 , wherein the security against rotation ( 10 ) includes a nose ( 31 ) which projects in the radial direction and which can be arranged in the gap ( 2 i ) of the ring carrier ( 2 ).

18. A seal arrangement ( 1 ) in accordance with claim 16 , wherein the security against rotation ( 10 ) includes a pin ( 10 a ) as well as a bore ( 10 b ) in the ring carrier ( 2 ) and a bore ( 10 c ) in the first sealing ring ( 3 a ) and/or in the second sealing ring ( 3 b ), with the pin ( 10 ) introduced into the bores ( 10 b , 10 c ) being designed such that it prevents a mutual rotation of the ring carrier ( 2 ) with respect to the first sealing ring ( 3 a ) and/or the second sealing ring ( 3 b ).

19. A seal arrangement ( 1 ) in accordance with claim 1 , wherein the first and/or second sealing ring ( 3 a , 3 b ) projects/project beyond the ring carrier ( 2 ) in the direction of the longitudinal axis (L).

20. A seal arrangement ( 1 ) for piston compressors comprising:

a deformable ring carrier ( 2 ) as well as a continuous first sealing ring ( 3 a ),

wherein the ring carrier ( 2 ) has a longitudinal axis (L) extending perpendicular to its peripheral direction,

wherein the ring carrier ( 2 ) has a gap ( 2 i ) with clearance in its peripheral direction, and wherein the ring carrier ( 2 ) is designed in L shape with a side part ( 2 n ) extending perpendicular to the longitudinal axis (L) and a surrounding part ( 2 m ) extending in the direction of the longitudinal axis (L),

wherein the first sealing ring ( 3 a ) has a longitudinal axis ( 3 c ) extending perpendicular to its peripheral direction, and wherein the first sealing ring ( 3 a ) is arranged in the ring carrier ( 2 ) such that the surrounding part ( 2 m ) surrounds the first sealing ring ( 3 a ) from the outside, and wherein the first sealing ring ( 3 a ) is arranged next to the side part ( 2 n ) and contacting it in the direction of extent of the longitudinal axis (L),

wherein the ring carrier ( 2 ) and the first sealing ring ( 3 a ) are designed mutually adapted such that when they contact a piston rod ( 6 ), the first sealing ring ( 3 a ) contacts a first side wall ( 2 d ) of the ring carrier ( 2 ) at the one side and forms a first gap (S 1 ) toward the ring carrier ( 2 ) at the side disposed opposite with respect to the longitudinal axis ( 3 c ) of the first sealing ring ( 3 a ), and

wherein the ring carrier ( 2 ) has a second side wall ( 2 e ) which is arranged opposite the first side wall ( 2 d ) with respect to the longitudinal axis (L) so that the ring carrier ( 2 ) can effect a preload force ( 5 a ) on the first sealing ring ( 3 a ) directed toward the longitudinal axis (L) via the first side wall ( 2 d ), and that a clamping ring ( 4 ) surrounds the ring carrier ( 2 ) from outside in the peripheral direction.

21. A seal arrangement ( 1 ) in accordance with claim 20 ,

wherein the side part ( 2 n ) has a sealing surface ( 2 c ) extending in a circular manner toward the longitudinal axis (L) and has a first center (Z 1 ) and a radius of curvature R 4 ;

wherein the second side wall ( 2 e ) is designed extending in semicircular manner and has a second center (Z 2 ) and a radius of curvature R 3 ;

wherein the radius of curvature R 3 is larger than the radius of curvature R 4 ; and

wherein the first and second centers (Z 1 , Z 2 ) are mutually spaced apart.

22. A seal arrangement in accordance with claim 21 , wherein the first side wall ( 2 d ) has a semicircular extent with a first center (Z 1 ) and a radius of curvature R 2 .

23. A seal arrangement in accordance with claim 21 , wherein the first and second side walls ( 2 d , 2 e ) have the same radius of curvature R 2 , R 3 .

24. A seal arrangement ( 1 ) in accordance with claim 21 , wherein the distance between the first and second centers (Z 1 , Z 2 ) lies in the range between 0.1 and 10 mm.

25. A seal arrangement ( 1 ) in accordance with claim 20 , wherein the first gap (S 1 ) has a maximum width in the range from 0.1 mm to 10 mm.

26. A seal arrangement in accordance with claim 20 , wherein the sealing ring ( 3 a ) is composed of a wearable material, in particular of a metal or of a plastic.

27. A seal arrangement ( 1 ) in accordance with claim 20 ,

wherein the first side wall ( 2 d ) extends over an angle of 180 degrees or approximately 180 degrees; and

wherein the first gap (S 1 ) extends over an angle of 180 degrees or approximately 180 degrees.

28. A seal arrangement ( 1 ) in accordance with claim 20 , wherein the sealing ring ( 3 a ) has an inner radius (R) which is larger than or equal to the outer radius (R 5 ) of a piston rod ( 6 ).

29. A seal arrangement ( 1 ) in accordance with claim 20 , wherein ring carrier ( 2 ) is composed of a metal.