Post on 07-Apr-2018
transcript
8/4/2019 Standard Open Loop Hydraulic Circuits Review
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Module CT05
Standard Open Loop
Hydraulic Circuits Review
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Outline
This presentation created to summarizethe standard open loop hydraulic circuits.
It is divided into two main parts:
Power Pack and Control Cab HydraulicCircuits Review
Well Control, CT Reel and Injector HeadCircuits Review
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Module CT05
Power Pack and ControlCab Hydraulic Circuit
Review
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HR240 Open Loop Power PackInjector Circuit
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HR240 Open Loop Power PackReel Circuit
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HR240 Open Loop Power PackPriority Circuit
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HR240 Open Loop Power PackLevelwind Override Circuit
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HR240 Open Loop Power PackBOP Circuit
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HR240 Open Loop Power PackAuxiliary Circuit
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Control Cabs
Controls and Gauges to monitoring the CTUOperations
Hydraulics Differences
The control panels will differ depending on the type of
power pack to be controlled
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Injector Controls and GaugesOpen Loop Power Pack
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Chain Traction Controls andGauges
Open Loop Power Pack
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Chain Tension Controls andGauges
Open Loop Power Pack
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REEL and LEVELWIND CONTROLS /
GAUGES
Open Loop Power Pack
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REEL and LEVELWIND CONTROLS /
GAUGES
Open Loop Power Pack
Raise/Lower
Arms
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Stripper Packer Controls andGauges
Open Loop Power Pack
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Stripper Packer Controls andGauges
Open Loop Power Pack
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BOP Controls and GaugesOpen Loop Power Pack
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Module CT05
Well Control, CT Reel andInjector Head Circuits
Review
BOP
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BOPCircuit
BlankSystem found in theCTOM section 310.1page # 15 of 38.
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SystemBlank
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Reel CircuitBlank
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POOH Animation3
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7
5
9 8
1011
12 13
15
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17
6
LevelwindSupply
CONTROLCABIN
CT REEL
POWERPACK
Prioritysupply
Pump provides pressurizedfluid,
causing Reel Drive motor to spin
Return line carries the fluid back tothe tank
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RIH animation
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2
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5
9 8
1011
12 13
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18
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6
LevelwindSupply
CONTROLCABIN
CT REEL
POWERPACK
Prioritysupply
•Normal POOH motor spin•Actual spin while RIH
Pushes fluid backwardtowards the 4-way valve
up to the Relief Valve
•Pump provides fluidup to the relief valve
•BOTH flows get vented
by the relief valve
•The back-pressure (80psi)on the return line feeds the motor
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Circuit
•Currently, 60 GPM is On & 30GPM is Off (18), Low Speed (27)
•Monsun Tison (22) get 450 psifrom the priority Circuit viaReducing valve (25)• Moving the Monsun Tison toRIH/POOH position, result inshifting the Husco Valve(9)
•The Husco Valve direct the flow
to the injector head drive motor(38)• the 60 GPM pump excessflow and 30 GMP pump flow isdirected to the reservoir
•175 psi is maintained in thereturn line via the back
pressure valve(10)•The injector brake will befully released by applying 600psi via the reducing valve(35)
•450 to 500 psi pilot pressurefrom the motor inlet is requiredto open the conterbalancevalve(31)
How does the injector HeadWork?
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How does the injector Headcircuit run the spooling reel?
• When the spooling reel motorworks as motor, the injectorcircuit works normal (see theinjector circuit animation)• Note that the high low
selector is not active.
Spoolingreel
• Note that valve No. 7( Spooling Relief control valve)should be open which activatethe spooling valve.• During spooling, 30 GPM – onposition, 60 GPM-Off position.
SPOOLING REEL WORKSAS MOTORBack Tension
HighPressureReducedPressureReturn to thetankPilot line
Spoolingusing standard open
loop power pack
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• The circuit shows thehydraulic system when thespooling reel works as motor
Spooling
using standard openloop power pack
Spoolingreel
SPOOLING REEL WORKS AS PUMPBack Tension
• When the spooling used toapply back tension, The spooling
motor works as a pump.
• What will happen, when thespooling reel used to apply back tension?
• The spooling motor pushes thefluid backward through thespooling relief valve (6).
• Both 60 GPM and 30 GPM getvented through their relief valve
How does the injector Headcircuit run the spoolingreel?
• The back pressure (175 psi)on the return line feeds themotor