Diapositiva 1

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TTCB Mechanical Design TTCS Progress meeting 15,
16, 17 September 2005
TTCB actual design by Bart/Xinmei
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TTCB fixation to USS bolts lower line
Box fixed from the back by 18 bolts at lower
line bolts pass through USS and fit in to
heli-coil inserts in the Box baseplate
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TTCB fixation to USS bolts upper line
Box fixed from the back by 6 bolts at upper
line bolts pass through USS and fit in to
heli-coil inserts in the Box baseplate
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1st INTERFERENCE LOWER BOLT LINE TTCB bolts lower
line/ Radiator Lower Bracket
_at_ Port (TTCBS) _at_ Starboard (TTCBP)
Interference at 7 bolts
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2nd INTERFERENCE LOWER BOLT LINE TTCB base-plate/
Radiator Middle Bracket
_at_ Port (TTCBP) _at_ Starboard (TTCBS)
Radiator Middle Bracket Violates TTCB assigned
ENVELOPE
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3rd INTERFERENCE UPPER BOLT LINE TTCB bolts
upper line/ TRD Gas Supply System Lower Bracket
_at_ Starboard (TTCBS)
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UPPER BOLT LINE 4th INTERFERENCE TTCB bolts
upper line/ TRD Gas Supply System Lower Bracket
_at_ Starboard (TTCBS)
All 6 bolts at upper line already taken by TRD
Gas Supply System
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Max loaded bolt Bolt Margin of Safety1.398
Bolt outside/ nut inside
Lower Bracket Reactions at USS interface load
case ( -13, -3.25,-3.25 ) g
Last bolt insert in the bracket
PLATE
LOWER BRACKET
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UPPER BOLT LINE TTCB bolts lower line/ UGBS and
CV pilot valve box
_at_ Starboard (TTCBP)
5th INTERFERENCE
Number and location of sharing bolts to be
finalized when components brackets to USS will be
fixed
recived by Robert
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Base-Plate modification Proposal1 Front view
new Vs old
405mm
380mm
new
old
380mm
425mm
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Base-Plate modification Proposal1
Front-top view new Vs old
Old (red)
New (cyan)
3 additional bolt holes
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Base-Plate modification Proposal1-a Back-bottom
view BRIDGE
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Base-Plate modification Proposal1-b Back-bottom
view shearing bolt with radiator bracket If
analysis shows negative MoS at TTCB baseplate
bolts Shearing will be done with less Loaded
bolts for the Radiator bracket Actual MoS for
radiator Bracket bolts?
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Base-Plate modification Proposal1-b
Back-bottom view shearing bolt
detail
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Proposal1-a/b START-UP RADIATOR conceptual
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TTCB Design modification Proposal 2 Conceptual
Design PRELIMINARY No interferences, no shearing
with radiator bracket bolts Plate design
stiffer and lighter More bolts taking load
Side-plate
Start-up radiator
Base-plate
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TTCB Design modification Proposal 2
Main components locations
OHP
ACC
PUMP-A
APS DPS
VALVE 1-A-B-C-D
HX
PUMP-B
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Pump axis has to be perpendicular to magnetic
field
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TTCB Design modification Proposal 2
440mm
PUMP-E
270mm
210mm
100mm
300mm
290mm
Pumps Electronic controller locations
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Pumps controller housing preliminary
design Design will be optimized according to TTCB
requirements
250mm
35mm
200mm
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300mm
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Fixation to USS
Baseplate and start-up radiator faced to USS as
one single assembly
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Fixation to USS
Baseplate fixed from the back to the USS
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Fixation to USS
Sideplate fixed from the back to the USS and to
start-up radiator
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TTCB Vs Radiator Bracket
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TTCB Vs Radiator
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TTCB Proposal2 Vs Actual
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TTCB Proposal2 Vs Proposal1 Vs Actual
Proposal2
Actual
Proposal1
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TTCB Actual Vs MGKeepout
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TTCB Proposal2 MGKeepout
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TTCB Proposal2 MGKeepout
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Relative displacement between the USS area where
the TTCB is located and the Vacuum Case where the
piping line that goes to the evaporator and to
the radiator are fixed
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TTCB plate versus USS thermal link. The
TTCBaseplate has to be thermally decoupled from
the USS TTCB hydraulic components versus TTCB
plate thermal link. Each hydraulic component is
conductively decoupled from the plate Hydraulic
components versus TTCS loop thermal link. Good
connection to the loop is used to control the
temperature of the components A Peltier cell on
the accumulator is connected to the
loop Electronic box versus TTCB plate thermal
link. The electronic box is in good thermal
contact with the plate
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Radiative decoupling between TTCB and USS the
TTCB will be wrapped into MLI. The
TTCB-start-up-radiator will be conductively
decoupled from the TTCB plate and conductively
coupled to the pumps and valves Thermo-elastic
behaviour of components fixed on the plate and
the plate itself. The maximum difference in
temperature between each component and baseplate
has to be known in order to evaluate relative
thermo-elastic displacements and induced stress
(occurring when this displacements are
constrained) between hydraulic components and the
plate. The accumulator bracket actual design
proposes a fully constrained lay-out TBV.
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The two boxes will be slightly different the
main differences consist in the valves that are
in the primary but not in the secondary. Probably
the valves will be eliminated also from the
primary loop if the test on the engineering
module will give confident results. If this
information is correct the design of the
secondary loop will be developed in detail an
then modified for the primary if necessary.
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The primary and secondary box, even assuming an
identical hydraulic circuit lay-out, cannot be
identical but they Have mirrored geometries due
to the locations in AMS_02. Then the support
plates will have a mirror geometries but the
components of the circuit will naturally have
only a mirror position. Being this component not
completely symmetric (pumps inlet and outlet at
one side accumulator inlet at one side, Peltier
fixed on the accumulator at one side,....) this
will result in a different piping lay out. Few
actions can be made at components level
production (positioning of the peltier component
on the accumulator,....) in order to minimize
these differences
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Lay-out after discussion ground testing
requirements
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Accumulator (CAST)

• Bracket design extreme delta Temp between ACC
  (steel) and Baseplate (Al alloy)
• (Thermal Group)

2. Peltier location on ACC (CAST)
APS, DPS

• China Electric?.. Verify sensor dimension and
  bracket design.
• Xinmei (SYSU) will take contacts

HX
1. Gerrit (NLR) will provide detailed 3d cad
model of HX and support bracket
OHP
1. Gerrit, J.Halm (NLR) will provide 3d cad
model, details and requirements

• PUMP
• PDT will provide end of September 3d cad envelope
  for pumps and Controller box
• If the conceptual proposal for the box is
  accepted PDT has to be contacted (INFN) to
  specify them Controller box dimension required

• START UP RADIATOR
• The start up dimensions have to be fixed by
  Thermal group

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Pre-heater Heater location Cable grounding
1. More information and discussion is needed