Flange connection, gas supply system and large engine

Abstract

The invention relates to a flange connection, a gas supply system and a large engine. The flange connection comprises two first flanges (2) and a fluid channel (4) for a first fluid, the fluid channel (4) extending through the two first flanges (2) in an axial direction (A); each first flange (2) comprises an axial end face (21) and the two axial end faces (21) abut against each other; a first fastening element (5) is provided, the two first flanges (2) being fastenable to each other with the first fastening element (5); two second flanges (3) are provided; the two second flanges (3) delimit a fluid connection (7) for a second fluid, the second fluid being flowable through the flange connection (1) separately from the first fluid through the fluid connection (7); a second fastening element (6) is provided, the two second flanges being fastenable to each other with the second fastening element (6); and the second fastening element (6) is different from the first fastening element (5).

Claims

1. A flange connector for connecting two double-walled pipe sections of a gas supply system, the flange connector comprising two first flanges (2) and a centrally arranged fluid passage (4) for a first fluid, each of the two first flanges (2) being connectable to the inner wall (1051, 1301) of one of the two pipe sections (105, 130), the fluid passage (4) extending through the two first flanges (2) in an axial direction (A), wherein, Each first flange (2) includes an axial end face (21) and the two axial end faces (21) abut against each other, and wherein at least one first fastening element (5) is provided, the two first flanges (2) being able to be fixed to each other by the first fastening element (5). The feature is that it is provided with two second flanges (3), each of which can be connected to the outer wall (1052, 1302) of one of the two pipe sections, wherein the two second flanges (3) define the boundary of a fluid connector (7) for a second fluid, the second fluid being able to flow separately from the first fluid through the flange connector (1) via the fluid connector (7), wherein at least one second fastening element (6) is provided, the two second flanges being able to be fixed to each other by the second fastening element (6), wherein the second fastening element (6) is different from the first fluid. A fastening element (5), wherein the two second flanges (3) form the first fastening element (5) and are designed and arranged such that they surround the respective radially outer portions (23) of the two first flanges, such that the two radially outer portions (23) of the first flanges (2) are arranged between the two second flanges (3) relative to the axial direction (A), and wherein one of the two second flanges (3) includes an annular extension (34) and the other of the two second flanges is disposed on the annular extension such that the two second flanges overlap relative to the axial direction.

2. The flange connector according to claim 1, wherein, The device is provided with a plurality of first fastening elements (5) or a plurality of second fastening elements (6), wherein the first fastening element (5) or the second fastening element (6) is designed as a screw connector (51, 61).

3. The flange connector according to claim 1, wherein, Multiple second fastening elements are provided, including a screw connector (61) and a bayonet connector (62), the bayonet connector ensuring the fixation of the two second flanges (3).

4. The flange connector according to claim 1 or 2, wherein, The two second flanges (3) are arranged spaced apart from each other relative to the axial direction (A), and the two first flanges (2) are arranged between the two second flanges (3) relative to the axial direction, wherein a generally cylindrical sleeve (8) is provided that surrounds the two first flanges (2) and the two second flanges (3) radially outward.

5. The flange connector according to claim 4, wherein, Multiple fixing elements (9) are provided, which fix the sleeve (8) relative to the two second flanges (3).

6. The flange connector according to claim 4, wherein, A sealing element is provided between each of the second flanges (3) and the sleeve (8) in each case.

7. The flange connector according to claim 4, wherein, Each first flange (2) has a shoulder (25) that forms the axial end face (21) of the first flange (2) in each case, wherein the first fastening element (5) is designed as a clamping device comprising two clamping elements (53), each clamping element (53) having a groove (54) that extends in the circumferential direction of the first flange (2) and is designed to receive the two shoulders (25), and wherein a plurality of tensioning elements (55) are provided, the clamping elements (53) being able to abut against each other with the tensioning elements (55).

8. The flange connector according to claim 7, wherein, The two shoulders (25) are designed such that they together form a trapezoidal profile in the circumferential direction, the trapezoidal profile being outwardly tapered in the radial direction.

9. The flange connector according to claim 7, wherein, Each tensioning element (55) includes a screw that extends perpendicular to the axial direction (A) in each case.

10. The flange connector according to claim 5, wherein, The fixing element (9) includes a plurality of screws (921), each of which is longer in the axial direction (A) than the sleeve (8) surrounding the second flange (3).

11. A gas supply system for a large engine, capable of supplying gas as fuel to at least one cylinder (210) of the large engine (200), the gas supply system comprising a first double-walled pipe section and a second double-walled pipe section, each pipe section comprising an internal passage (106) for gaseous fuel and an external passage (107) for a second fluid arranged around the internal passage, characterized in that, The two double-walled pipe sections are connected by a flange connector (1) according to any one of claims 1 to 10.

12. A large engine having at least one cylinder (210), wherein, A gas supply system (150) is provided, which can supply gas as fuel to each cylinder (210), characterized in that the gas supply system (150) is the gas supply system according to claim 11.

13. The large engine according to claim 12, wherein the large engine is designed as a longitudinally scavenged two-stroke large diesel engine.

14. The large engine according to claim 13, wherein the large engine is designed as a dual-fuel large diesel engine, the dual-fuel large diesel engine being able to operate in a liquid mode in which liquid fuel is introduced into the cylinder (210) for combustion, and also in a gas mode in which gas is introduced into the cylinder (210) as fuel.

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