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  • 04 july 2017
    At the Technoprom Forum, an agreement was signed between "Tornado Modular Systems" with "Siblitmash" and "Komintern"

    The tripartite agreement provides for import substitution for components of the injection molding complex from SibLitMach in the field of industrial robots ("Comintern") and the control system ("Modular Tornado Systems") that will cover the entire production cycle of the LAP, including the management of industrial robots

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APCS of the turbo unit No. 2 of Kansk CHPP

Design, shipment of the DCS “Tornado” and assembling of the APCS of the R-12-3,4 / 0,5 turbo unit No. 2 of Kansk CHPP (OJSC “Yenisei TGC (TGC-13)”) has been executed. The work is fully completed.

The automation object characteristics

The steam turbine No. 2 of R-12-3,4 / 0.5-1 type with backpressure is designed for a generator drive of T-12 2UZ type.
The main parameters of the P-12-3,4 / 0.5-1 turbine are given in the Table.

Parameter name

Unit of measure

Parameter value

Nominal capacity

MW

12

Direct steam pressure (gauge)

MPa

3.4

Steam pressure behind the turbine (gauge)

MPa

0.5

Direct steam temperature

°C

435

Nominal consumption of the direct steam

t/h

111.24

Nominal rotation speed of the rotor

Rpm

3000

The turbine is a single-shaft & single-cylinder unit with backpressure.

The turbine has a valve and nozzle steam distribution. The direct steam is supplied from the steam line to the isolation valve and then via the bypass pipes to the control valves.

At the output of the last stage the used steam is admitted to the auxiliary collector of 0.6 MPa electrical station and further to the delivery water calorizators. 

The turbine is equipped with labyrinth shaft-end seals. The jet calorizator (Electrical substation – 1M) is provided for steam exhaust from the shaft-end seals of the turbine as well as from the rod seal of the isolation and control valves.

The turbine is equipped with a hydraulic shaft-turning device which provides uniform heating of the rotor during the turbine starting and uniform cooldown during cooling.

The turbine is equipped with the hydraulic automatic control system, which, within the prescribed limits, depending on the operating mode of the turbine supports the following parameters:

  • Rotation frequency of the turbo unit rotor with the degree of irregularity of 4.5%. The degree of insensitivity of rotation speed control is no more than 0.3% of the nominal one;

  • Electrical load (power) of the turbo generator;

  • Automatic maintaining of steam pressure behind the turbine. The control irregularity degree of steam pressure behind the turbine (back pressure) is 10% of the nominal one;

  • Keeping the turbine on the idle run when the generator is disconnected from the grid.

The turbine’s oil system supplies oil to both control and bearing lubrication systems. The oil supply to the control system is performed by the main fuel control unit, which is operated directly by the turbine shaft. At the same time, the oil is supplied to the turbine and generator lubrication system through two oil coolers of MGB 18-18 type. 

The lubrication system is equipped with four pumps: start-up, stand-by, parking and transporting.

Raw water from the water pipe is used for the cooling of generator oil and air.

All technological equipment of the turbo unit is divided into functional & technological units.


The list of the functional and technological units:

  • turbine;

  • oil supply system;

  • sealing system;

  • extracted steam collector;

  • raw water heaters;

  • decarbonized water heater;

  • generator.


APCS should provide the automation of technological processes of the turbine plants in all operating modes of the equipment, which are listed below:

  • normal;

  • transitional;

  • pre-emergency;

  • emergency.

In all of the modes listed above the staff safety, the equipment integrity and environment protection should be provided.

The transient modes are:

  • turbine cold start-up;

  • turbine warm start-up;

  • turbine hot start-up;

  • planned reserve or repair shutdown of the turbine plant.

The volume and sequence of the operations for the execution of these modes should correspond to the instructions of technological equipment manufacturers and operating instructions.


 

 


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