BACK PRESSURE CURTIS TURBINE

HIGH EFFICIENCY SINGLE STAGE TURBINE

Single Stage Back Pressure Turbine

BACK PRESSURE CURTIS TURBINE

Best suited for First time Turbine Users

CONCEPT

The BT 4 turbine is best known as the first step towards co-generation, as it provides a stepping- stone to understand the basics of balancing steam and power. Induction generator based examples offer an even greater degree of freedom for users that want to synchronise their machines with the grid. These turbines have been serving our customers since the year 2001, and greater than 300 are in active service today.

Features

BT-4 is a Curtis design turbine that has a low CF rotor. The rotor is supported on both sides by high- speed bearings.

  • The BT Series has been specially designed for continuous operation as repeated startup and shutdown cycles.
  • As a synchronised turbine, it can be fitted with induction generators or alternators and can meet varying steam loads effortlessly to deliver constant back pressure.
  • Can be provided with Hydro-Mechanical or Electronic Governors.
  • No requirement for Control Oil System.
  • Due to low internal losses, it is well suited to applications with low steam flow.
  • As a base load turbine, it meets the exacting performance of a work horse.
  • Suitable for Mechanical drive Operation.
  • A highly proven, rugged and reliable design, it can be adopted for all small Cogen applications.
  • High level of standardisation has ensured that parts are available immediately, reducing turbine downtime.

Parameters

Frame Parameters

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HIGH EFFICIENCY SINGLE STAGE TURBINE

CONCEPT

This high efficiency single stage turbine features a large wheel diameter, for improved efficiency. Nozzle governing with 3 valves ensures superior efficiency at part-load conditions. An integral Woodward / RE governor ensures simple operation and high reliability. Suitable for use with Synchronous and asynchronous generators.

Its flexibility has made it a popular choice for mechanical drive applications. A combination of pressurised and ring lubrication along with between bearings shaft design between has ensured full API 611 compliance and 612 compliance (with exceptions). The unique combination of high efficiency, operational flexibility, moderate acquisition cost and minimum maintenance has found wide acceptance in the sugar, calcium carbonate and textile industry.

Features

The 6SS is a large diameter Single Stage Curtis wheel design. The rotor shaft is supported by double bearings.

  • As a synchronised turbine, it can be fitted with induction generators or alternators and can meet varying steam loads effortlessly to deliver constant back pressure.
  • Can be provided with Hydro-Mechanical or Electronic Governors.
  • No requirement for Control Oil System.
  • Suitable for Mechanical drive Operation.
  • Ideal for Power Plants operating at Intermediate pressures upto 45 Bar (a).
  • High level of standardisation has ensured that parts are available immediately, reducing turbine downtime.
  • Low specific investment cost ensures fast payback.
  • 2 Nos hand nozzle valve for optimized operation at part loads.
  • Meets API 611 Specifications.

Parameters

Frame Parameters

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