DRESSERRAND GmbH Oberhausen 2TA Turbines

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DRESSER-RAND GmbHOberhausen2TA Turbines
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2TA.. Turbines
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2TA.. Turbines

• Salient features
• Between bearings
• API 612 design
• Rotors can be solid or built up
• Glands carbon ring or labyrinth

• Inlet pressure to 2000 psig
• Inlet temperature to 980 deg F
• Exhaust pressure to 500 psig
• Speeds upto 17000 RPM

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2TA.. Turbines

• Salient features
• Centreline support
• Fully axially split turbine casing
• Separate, axially split bearing cases

• Bearing cases in carbon steel
• Turbine soleplate mounting as standard

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2TA.. Turbines

• Salient features
• Thrust bearings are babitted land, multipad type
  for low speed API 611 applications or
  self-equalising, tiltpad type for API 612 or high
  speed applications

• Radial bearings can be cylindrical or 4 lobe
  bearings for low speed applications or tilt-pad
  type for high speed applications

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2TA.. Turbines
Typical compressor drive turbine with solid
rotor, tilt pad bearings and laby end glands
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2TA.. Turbines
Applications

• Compressor drives
• Fan drives
• Blower drives
• Pump drives

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2TA.. Turbines

• This compressor drive turbine is for KNPC Kuwait
  running at
• 14000 rpm and is fitted with pneumatically
  operated handvalves and a redundant coil
  hydraulic governor valve actuator

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Accessories
Trip Valves

• All units have TT valves
• Can be mechanically or hydraulically operated
  (such as for remote auto-start applications)

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Accessories
Trip Valves

• An Excerciser feature is available on both
  mechanical and hydraulic types to test the
  operation of the trip and throttle valve without
  tripping the turbine off-line

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Accessories

• Governor Valves Single valve inlet

• All single valve units are double seated
• Actuators are directly mounted
• Can be hydraulically or pneumatically operated

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2TA.. Turbines

• Typical single valve inlet turbine

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Accessories

• Governor Valves Single valve inlet

• In a single valve inlet, the single governor
  valve throttles the entire steam flow to the
  turbine. Cutting off steam flow to individual
  internal nozzle segments for more efficient part
  load operation is done either with manual (hand)
  valves or auto-operated valves

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2TA.. Turbines

• Single valve inlet turbine with pneumatically
  operated auto-valves

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Accessories

• Governor Valves Multivalve inlets

• Most 2TA turbine model inlets can be fitted with
  a multivalve inlet
• This gives improved - fully automatic - partload
  performance

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Accessories

• Governor Valves Multivalve inlets

• The valves open sequentially, and each throttles
  steam flow to an individual internal nozzle
  segment
• In this way the losses due to valve throttling
  are minimised

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Accessories

• Governor Valves multivalve inlets

• Actuation is by means of a bar lift with direct,
  locally mounted actuator
• Individual valve covers are used for ease of
  inspection and maintenance

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2TA.. Turbines

• Typical multivalve inlet on a compressor drive
  turbine in a South African Refinery

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Accessories

• Nozzle Blocks
• All milled design
• Each nozzle block is individually designed for
  fully streamlined steam path

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Accessories

• Electronic Overspeed trips
• Electronic governors and / or overspeed trips
  are possible on all units
• They are standard on all API 612 turbines
• Toothed surface is used on shaft

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Accessories

• Panels
• Usually electronic logics are mounted in a panel
  by D-R
• 505 governor is mounted on the door
• Protech 203 is mounted on inside back panel
  (mounting plate)
• Fully tested with turbine

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Accessories

• Panels

Modern refinery compressor drivers often have
triple redundant governor systems to ensure
maximum reliability, even in case of electronic
microprocessor failures. The unit above included
5009 governor and Protech 203 voting overspeed
system
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Accessories

• Panels
• Can be open for safe areas or purge type (such as
  this panel for BENTLY NEVADA monitoring system -
  3500 Series)

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Rotor Containers
In order to maintain valuable capital spares in
as new conditions over many years, rotor
containers can be supplied suitable for long term
storage of rotors under nitrogen purge
conditions. Containers are suitable for vertical
or horizontal storage
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Quality Assurance

• All equipment is built to extremely stringent
  quality standards and extensively testing in our
  works prior to shipment
• DRESSER-RAND GmbH is qualified to ISO 9001 by
  LRQA for the manufacture of steam turbines for
  both the general and nuclear industries and ISO
  14001

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info_at_dresser-rand.com