Apparatus and Method for Monitoring a Reactor Surface

1 . An apparatus for monitoring a reactor surface, comprising at least one sensor cable ( 10 ) which is arranged at least in sections in the region of the reactor surface during operation of the apparatus;

at least one optical fiber ( 1 , 2 ) in which at least one sensor cable ( 10 ) is arranged;

at least one laser light source, whose light is at least partially coupled into the at least one optical fiber ( 1 , 2 ) during operation of the apparatus;

evaluator in which portions of the light coupled out of the at least one optical fiber ( 1 , 2 ) are evaluated during operation of the apparatus for monitoring at least parts of the reactor surface with respect to at least one physical variable in a spatially resolved manner;

wherein the apparatus comprises magnetic retaining means ( 8 ) for attaching the at least one sensor cable ( 10 ) on the reactor surface.

2 . The apparatus according to claim 1 , wherein the retaining means ( 8 ) have a slot ( 9 ) disposed on a side that faces the reactor surface during operation of the apparatus for receiving the at least one sensor cable ( 10 ).

3 . The apparatus according to claim 1 , wherein the device comprises at least two optical fibers ( 1 , 2 ).

4 . The apparatus according to claim 3 , wherein the evaluator comprise at least two evaluation units ( 3 , 4 ), wherein each of the evaluation units ( 3 , 4 ) is connected to a corresponding one of the optical fibers ( 1 , 2 ) for evaluating the light coupled out of this optical fiber ( 1 , 2 ).

5 . The apparatus according to claim 3 , wherein the at least two optical fibers ( 1 , 2 ) are arranged in the same sensor cable ( 10 ).

6 . The apparatus according to claim 3 , wherein each of the optical fibers ( 1 , 2 ) is connected on both sides with the evaluator and/or with the at least one laser light source.

7 . The apparatus according to claim 4 , wherein the apparatus comprises a controller ( 5 ), wherein each of the evaluation units ( 3 , 4 ) is connected to the controller ( 5 ).

8 . The apparatus according to claim 1 , wherein the monitored physical quantity is the temperature or the elongation of the optical fibers ( 1 , 2 ).

9 . The apparatus according to claim 1 , wherein the apparatus comprises mat-shaped or mesh-shaped retaining means ( 12 ) for attaching the at least one sensor cable ( 10 ) on the reactor surface.

10 . The apparatus according to claim 9 , wherein the at least one sensor cable ( 10 ) is connected to the retaining means ( 12 ).

11 . The apparatus according to claim 9 , wherein the mat-shaped or mesh-shaped retaining means ( 12 ) are at least partially arranged around the reactor surface during operation of the apparatus.

12 . A method for monitoring a reactor surface comprising the following steps:

providing at least one sensor cable ( 102 ) having at least two optical fibers ( 1 , 2 ), the at least one sensor cable is at least in sections arranged in the region of the reactor surface;

providing laser light which is coupled into the optical fibers ( 1 , 2 );

providing portions of light coupled out of the optical fiber ( 1 , 2 ) which are evaluated for monitoring at least parts of the reactor surface with respect to at least one physical quantity in a spatially resolved manner.

13 . The method according to claim 12 , wherein the portions of the light coupled out of the at least two optical fibers ( 1 , 2 ) are evaluated independently of each other.

14 . The method according to claim 13 , wherein the operation of the evaluation units ( 3 , 4 ) is monitored.

15 . The method according to claim 13 , wherein the evaluation in different evaluation units ( 3 , 4 ).