Port arrangement for an internal component

1. A port arrangement for accessing a demountable component in an interior of an apparatus or container, the port arrangement comprising:

an inner port including a port tube and forming a non-integral, releasable connection with an internal component, the releasable connection being pretensioned so as to provide a pressing force which presses the port tube toward and against the internal component; and

an outer port connected with an outer jacket, the port tube of the inner port being received through the outer port.

2. The port arrangement recited in claim 1 , wherein the connection between the inner port and internal component is formed by a sealing element including cones inserted within one another, and wherein at least one of the port tube of the inner port and a port tube of the outer port includes an expansion compensator integrated therein and configured to provide the pressing force.

3. The port arrangement recited in claim 2 , wherein the cones have a round cross-section.

4. The port arrangement recited in claim 2 , wherein the cones have a cross section of an isosceles triangle.

5. The port arrangement recited in claim 1 , wherein the connection between the inner port and internal component is formed by a sealing element including one hemisphere and one shell half inserted into one another.

6. The port arrangement recited in claim 1 , wherein the connection between the inner port and internal component is formed by a sealing element including a threaded screw connection.

7. The port arrangement recited in claim 1 , wherein the port tube of the inner port has an expansion compensator and wherein the pressing force is provided by the expansion compensator.