DCLL TBM Design Status FNST Meeting, August 12-14, 2008, UCLA

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Presentation transcript:

DCLL TBM Design Status FNST Meeting, August 12-14, 2008, UCLA Mo Dagher1 and Edward Marriott2 With Input from Clement Wong3, Siegfried Malang4 and Mohamed Sawan2 And the US DCLL Team 1University of California – Los Angeles 2UW – Madison, Fusion Technology Institute 3General Atomics, 4Consultant

The DCLL TBM has undergone a major design change since the last time a design review was held. Changes focused on an optimized He flow circuit through the Grid Plates as well as changing the PbLi flow scheme. Work is ongoing to complete the back plate design, He Plenum design and overall TBM design optimization based on input from thermal and structural analysis. System integration design update for TBM interface with Frame assembly, Port extension and AEU

Equatorial Port Plug Assembly DCLL TBM Equatorial Port Plug Frame Assembly DCLL TBM Assembly Shielding* Vacuum Boundary Back Plate* * Shielding and Pipe penetrations shown in this view are not representative of the final design. Additional design work is under way to complete this assembly.

Design Change Highlight DCLL TBM Design Design Change Highlight Original Design Concept Reversed PbLi Flow Starting at the top PbLi Inlet in back Channel with Downward flow PbLi Outlet flow in Front channel Upward Flow Replaced PbLi concentric pipe concept with two individual I/O Pipes He Flow in FW is Un-Changed, 2 circuits, 7 passes per circuit He Flow in Grid Plate is Modularized. He Flow in Grid plate in radial direction Multi-layered back plate design Configuration. Current Design Concept

PbLi Flow Scheme 5) LL flow exits TBM 1) LL Flow Enters TBM 2) LL flow splits into Three Channels and flows down inner chamber 4) LL flow Collected in the Upper Manifold 3) LL flow turns around and flows up outer chamber

He Flow through First Wall Flow through top plate He Flow through First Wall Step 2: Helium splits to the First Wall flow circuits. Helium splits to the First Wall flow circuits. Helium counter-flows through six First Wall passes and Bottom Plate. Step 3: Helium counter-flows through six First Wall passes and Bottom Plate. Helium flows into seventh pass, top plate, and Pb-Li horizontal plate. Flow through First Wall

He Flow through Grid Plate and Divider plates He Inlet Channels He outlet Channels

TBM Assembly, General Configuration PbLi Outlet Pipe PbLi Inlet Pipe Shear keys He Outlet Pipe Electric Strap He Inlet Pipe Flexible Support Points PbLi Drain Pipe

TBM Assembly Exploded View Major Components

DCLL TBM Assembly Mid Plane Section PbLi Outlet Channels (3) Inner He Distribution Manifold (Circuit 1) PbLi Inlet Channels (3) Divider Plate Plenum Outer He Distribution Manifold (Circuit 2) First Wall Grid Plates Grid Plate He Outlet Plenum Inner He Dist. Manifold (Circuit 2) He Outlet Plenum Grid He Inlet Plenum Outer He Distribution Manifold (Circuit 1) Back Plate

Mid Plane Section View

Vertical Section View Thru PbLi Channels

Vertical Section Through Grid Plates

Radial Build Layer Positions Seven Layers were used (Layer Thickness shown in parentheses): Top Plate (28mm) PbLi Outlet (100mm) Horizontal Grid Plate (20mm) PbLi Inlet (120mm) Midplane (1275mm) Bottom Zone (93mm) Bottom Plate (24mm) Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Layer 7

Layer 5 – Midplane (1275mm), Material Composition

Layer 5 – Midplane (1275mm), Power Density Dist.

Current and Future Activities Analysis He Flow analysis. He Flow through First wall, Grid Plates, Pressure Drop and flow distribution. Disruption loads. To provide loading and stress information in order to design the TBM attachment system to the Frame and shielding. Stress analysis of the various components and assemblies for further design optimization. TBM design iteration based on input from thermal and structural analysis. System integration. Complete back Shield design based on input from neutronics analysis including TBM attachment, pipe penetrations and Vacuum Boundary pipe pass through. Pipe Forest configuration and design through equatorial port into the AEU Update AEU interface design. Fabrication and Assembly. Evaluate fabrication and assembly process for various TBM components