Connection adapter for a container for a fire-extinguishing agent pertaining to a fire-extinguishing system

1. An adapter for connecting an extinguishing-agent container to a pipeline of a fire-extinguishing system in a fluid-conducting manner, the adapter comprising:

a first connector, which is configured to be connected to a correspondingly configured connection of the extinguishing-agent container,

a second connector, which is configured to be connected to a corresponding pipeline connection of the pipeline, and

a rigid pipe coupling that is variable in length and extends along a longitudinal axis, wherein the first connector and the second connector are each attached in an articulated manner to the pipe coupling,

wherein at least one of the first connector and the second connector includes a housing and a rocking piece,

wherein a pretensioning element is disposed between the housing and the rocking piece of the at least one of the first connector and the second connector,

wherein the pretensioning element has a first front ring and a second front ring interconnected by a plurality of encircling wavy annular spring elements, the first front ring contacting the rocking piece and the second front ring contacting the housing;

wherein the pipe coupling has a first connecting pipe and a second connecting pipe, which are movable relative to one another in a direction of the longitudinal axis, wherein the first connector includes the housing and rocking piece, and wherein the first connecting pipe is coupled to the rocking piece of the first connector; and

wherein the first and second connecting pipes engage each other, wherein the second connector includes a housing and rocking piece, and wherein the second connecting pipe is coupled to the housing of the second connector.

2. An adapter for connecting an extinguishing-agent container to a pipeline of a fire-extinguishing system in a fluid-conducting manner, the adapter comprising:

a first connector, which is configured to be connected to a correspondingly configured connection of the extinguishing-agent container,

a second connector, which is configured to be connected to a corresponding pipeline connection of the pipeline, and

a rigid pipe coupling that is variable in length and extends along a longitudinal axis, wherein the first connector and the second connector are each attached in an articulated manner to the rigid pipe coupling;

wherein the rigid pipe coupling has a first connecting pipe and a second connecting pipe, which are movable relative to one another in a direction of the longitudinal axis;

wherein each of the first and second connectors is coupled, respectively, to the rigid pipe coupling by a first and a second spherical-cap joint,

wherein the first spherical-cap joint includes a first housing and a first rocking piece, the first rocking piece being connected to the first connecting pipe; and

wherein the second spherical-cap joint includes a second housing and a second rocking piece, the second housing being connected to the second connecting pipe.

3. The adapter as claimed in claim 2 , wherein the first and second connecting pipes are screwed together by a trapezoidal thread.

4. The adapter as claimed in claim 2 , wherein the pipe coupling is variable in length in the direction of the longitudinal axis over a length range of 20 mm to 105 mm.

5. The adapter as claimed in claim 2 , wherein each of the first and second spherical-cap joint has a continuous flow duct for a passage of fluid.

6. The adapter as claimed in claim 2 , wherein the first housing has a first sliding surface, and the first rocking piece has a second sliding surface, wherein the first and second sliding surfaces slide against one another and are shaped such that the first rocking piece is guided in a spherically movable manner in the first housing.

7. The adapter as claimed in claim 6 , wherein at least one of the first and second sliding surfaces is formed as a spherical segment.

8. An adapter for connecting an extinguishing-agent container to a pipeline of a fire-extinguishing system in a fluid-conducting manner, the adapter comprising:

a first connector, which is configured to be connected to a correspondingly configured connection of the extinguishing-agent container,

a second connector, which is configured to be connected to a corresponding pipeline connection of the pipeline, and

a rigid pipe coupling that is variable in length and extends along a longitudinal axis, wherein the first connector and the second connector are each attached in an articulated manner to the rigid pipe coupling;

wherein the rigid pipe coupling has a first connecting pipe and a second connecting pipe, which are movable relative to one another in a direction of the longitudinal axis,

wherein at least one of the first or second connectors is coupled to the rigid pipe coupling by a spherical-cap joint,

wherein the spherical-cap joint has a housing with a first sliding surface and a first non-sliding surface, and a rocking piece with a second sliding surface and a second non-sliding surface, wherein the first and second sliding surfaces slide against one another and are shaped such that the rocking piece is guided in a spherically movable manner in the housing,

wherein a pretensioning element is disposed between the rocking piece and the housing, and contacts the second non-sliding surface of the rocking piece, and

wherein the pretensioning element is pretensioned in a direction of the first and second sliding surfaces such that the first and second sliding surfaces are pressed together in a fluidtight manner.

9. An adapter for connecting an extinguishing-agent container to a pipeline of a fire-extinguishing system in a fluid-conducting manner, the adapter comprising:

a first connector, which is configured to be connected to a correspondingly configured connection of the extinguishing-agent container,

a second connector, which is configured to be connected to a corresponding pipeline connection of the pipeline, and

a rigid pipe coupling that is variable in length and extends along a longitudinal axis, wherein the first connector and the second connector are each attached in an articulated manner to the rigid pipe coupling;

wherein the rigid pipe coupling has a first connecting pipe and a second connecting pipe, which are movable relative to one another in a direction of the longitudinal axis,

wherein at least one of the first or second connectors is coupled to the pipe coupling by a spherical-cap joint,

wherein the spherical-cap joint has a housing with a first sliding surface, and a rocking piece with a second sliding surface, wherein the first and second sliding surfaces slide against one another to provide a first pair of sliding surfaces and are shaped such that the rocking piece is guided in a spherically movable manner in the housing,

wherein the spherical-cap joint has a third sliding surface on an insert, which is arranged opposite the first sliding surface, and the rocking piece has a fourth sliding surface, which is arranged opposite the third sliding surface, wherein the third and fourth sliding surfaces slide against one another to provide a second pair of sliding surfaces and are shaped such that the rocking piece is guided in a spherically movable manner in the housing, wherein, at least one of the third and fourth sliding surfaces is formed as a spherical segment, and

wherein the first pair of sliding surfaces and second pair of sliding surfaces are configured so that the second and fourth sliding surfaces are disposed between the first and third sliding surfaces.

10. The adapter as claimed in claim 2 , wherein at least one of the first and second spherical-cap joint has an adjusting cone with an opening angle in a range from 5° to 20°.

11. The adapter as claimed in claim 2 , wherein one of the first connecting pipe and a second connecting pipe is an internal pipe, and the other of the first connecting pipe and a second connecting pipe is an external pipe, and wherein the internal pipe has a sliding portion that is arranged on a front side and bears in a slidable manner against an inner wall of the external pipe.

12. The adapter as claimed in claim 11 , wherein a sealing element for sealing off the pipe coupling against fluid egress is arranged between the internal pipe and the external pipe at the sliding portion.

13. A fire-extinguishing system comprising:

an extinguishing-agent container with a connection,

a pipeline connection, wherein the connection of the extinguishing-agent container and the pipeline connection are spaced apart from one another, and

an adapter, which connects the extinguishing-agent container to the pipeline connection in a fluid-conducting manner, wherein the adapter has a first connector, which corresponds to the connection of the extinguishing-agent container and is connected thereto, a second connector, which corresponds to the pipeline connection and is connected thereto, and a rigid pipe coupling that is variable in length and extends along a longitudinal axis, wherein the first connector and the second connector are each attached in an articulated manner to the pipe coupling,

wherein the rigid pipe coupling has a first connecting pipe and a second connecting pipe, which are movable relative to one another in a direction of the longitudinal axis;

wherein each of the first and second connectors is coupled, respectively, to the rigid pipe coupling by a first and a second spherical-cap joint,

wherein the first spherical-cap joint includes a first housing and a first rocking piece, the first rocking piece being connected to the first connecting pipe; and

wherein the second spherical-cap joint includes a second housing and a second rocking piece, the second housing being connected to the second connecting pipe.