Status of the Power Core Configuration Based on Modular Maintenance Presented by X.R. Wang Contributors: S. Malang, A.R. Raffray and the ARIES Team ARIES.

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Presentation transcript:

Status of the Power Core Configuration Based on Modular Maintenance Presented by X.R. Wang Contributors: S. Malang, A.R. Raffray and the ARIES Team ARIES Meeting University of Wisconsin, Madison June 14-15, 2005

2 What is new?  Start 3D CAD modelling of ARIES-CS power core components. -bucking cylinder -coils&coil structure tube -internal vacuum vessel -manifold -hot shield -FW&blanket -building  Check and analysis space issue of the power core components and assemblies. -interference/clearance calculations -volume calculations

3 Power Core Configuration Based on Modular Maintenance Approach  VV must fit into the modular coils with their structure support.  Breeding blanket and shielding modules have to be attached to a shell constituted by the shield and the manifold regions. This shell is supported by the VV.  Coolant supply/return pipes are placed inside of VV to reduce penetrations through VV.  All out-of-plane forces are reacted inside the field period, and the centering forces are reacted by a strong bucking cylinder in the center of the torus.  For thermal insulation, the entire coil system has to be enclosed in a common cryostat.  No disassembling and re-welding of VV are required for blanket replacement. Major design features:

4 Assembly of Bucking Cylinder  Geometry of the bucking cylinder is very complex.  The outer surface of the bucking cylinder is generated by using partial surfaces of coil supporting tube as a boundary, and it is well matched with the outer surface coil supporting tube.  The bucking cylinder parts (cold structure) will be supported by cold legs, and the weight will be transferred to foundation(ground base).

5 Assembly of Coils&Coil Tube and Bucking Cylinder  Coil supporting tube is composed of inter coil structure, coil cases and winding pack. The tube is subdivided into three parts, one part per period.  The bucking cylinder is placed into the center of coil tube to react the large centering forces.  The entire coil system has to be enclosed in a common cryostat. Design Features

6 Define of the Internal Vacuum Vessel WC Shield-only Supply/Return pipes

7 Internal Vacuum Vessel  VV must fit into the modular coils with their structure support.  The space inside the VV must be sufficient for breeding blanket and shield modules and manifold.  No disassembling and re-welding of VV are required for blanket replacement. Vacuum Vessel Design considerations: VV & Coil tube cuts for maintenance port Space for coolant supply/return pipes

8 Maintenance Ports Arranged Between Modular Coils at 0°, 120° and 240° Rectangular port shape: 2m x 4m (*Assuming 1 or 2 ports for each field-period)

9 Vacuum Vessel Assembly Sequence  VV is assembled by six segments, and two segments for each field-period are mirror symmetric.  Considering the twofold mirror symmetry, there is only one shape per field-period.  The port can be subdivided into two halves and welded to the VV segment to avoid at 0 degree cross section welds behind coils. 0-60° segment60-120° segment

10 Vacuum Vessel Assembly Sequence(1)  Position the coil supporting tube of the field-period.  Slide one VV segment into the coil supporting tube of the field period in toroidal direction from one end.  Install another VV segment by sliding it into the coils supporting tube from another end, then weld the two segments from inside at 60 degree. VV and Coils Sub-assembly

11 Vacuum Vessel Assembly Sequence(2)  Position and install two VV and coils sub-assembly, and joint together the VV at 0, 120, and 240 degree by welding.

12 Vacuum Vessel Assembly Sequence(3)  Add and install the VV port extensions, insulators and flanges.

13 Analysis Interferences/Clearances Between VV and Blanket/Shield/Manifold FW&Blanket: 63 cm FS Shield:28 cm Vacuum vessel:28 cm Manifold:35 cm (Laila, “Radial Build and Composition for LiPb/FS/He System”, March 22, 2005)  There is no sufficient space in a few locations to fit into the combination blanket, shield and manifold. The WC Shield-only module will be installed in this region.  It may need ~5 to 10 cm space to place manifold for feeding helium coolant to the WC Shield-only module.  Breeding blanket and shielding modules have to be attached to a shell constituted by the shield and the manifold regions. This shell is supported by the VV. (structure should be added between manifold and VV at the bottom, not shown in drawing). WC Shield-only (Δmin=119 cm)

14 Isometric View of Showing the Area Where Needs 5-10 cm for Manifold The manifold was cut to fit into inside VV. 5 ~10 cm space will be needed to place a thin manifold to feed Helium to WC-Shield-Only module.

15 Overall Power Core Configuration Geometry of the biological shield is modified to a simple column with a top dome.

16 Volumes of the Power Core Components ComponentVolume(100% dense), m 3 Plasma556.5 Bucking cylinder535.1 Coil system(supporting tube+winding pack) Vacuum vessel (Ports+insulators) Blanket585.9 Shield191.4 Manifold359.1 Bio-Shield8043.3

17 Summary  3D CAD modeling for CS power core components based on modular maintenance has been started in order to locate and analysis the space issue.  Clearances/Interferences have been checked and analyzed between pair of sub-assemblies and pair of parts.  The WC Shield-only modules will be installed in few locations where there is no sufficient space for the combination blanket, shield and manifolds, and 5~10 cm more space is needed to place manifold for cooling the WC Shield-only modules.