Steam Turbine Retrofits/Modernization Turbine Solution

Dongturbo Electric Company Ltd is one of the leading manufacturers and suppliers of steam turbine retrofits/modernization turbine solution in China. We warmly welcome you to buy high quality customized products at competitive price from our factory. Contact us for more cheap products.

Increase in turbine efficiency

1. Replacement of steam path with reactive blading with and without replacing of outer HP casing

2. Modernization of IP flow path LP

3. Replacement of springs in glands with cylindrical springs

Increase in turbine efficiency

1. Replacement of steam path with reactive blading with and without replacing of outer HP casing

2. Modernization of IP flow path LP

3. Replacement of springs in glands with cylindrical springs

Reduction of labour consumption for maintenance

1. Modernization of the monitoring system

Increase in power other technical characteristics

1. Controlled steam extraction for district heating

Reduction of capitalized expenses

1. Electro hydraulic protection against increase

Turbine K-200-130 (K-225-130), modernized HPC

1. Increased number of stages

2. Increased height of blades, smaller diameter of flow path

3. New effective airfoils of stationary and moving blades adjusted with flow inlet angles

4. Reactive type blading (new airfoils) 

5. Decreased differential pressure at control stage 

6. Internal efficiency increase: 5.0 - 8.0%

Single-sealing housing carrier design    ensures as follows:

1. exclusion of buckling,

2. exclusion of damages to the strips of the sealing rings,

3. insensibility of gland to the temperature fluctuations,

4. exclusion of steaming,

5. increase in reliability,

6. reduction of scope and time of assembling works,

7. decrease in radial clearance values by 30 – 40%.

The gland of a similar design has been installed in turbine K-255-162at Alholma power station in Finland.

Output losses are reduced by 1000-1250 kW.

Turbine K-200-130 (K-225-130), modernized IPC

 Integrally milled shrouds, welded diaphragms

 Adjusted flow angles and airfoil angles

 Smooth meridian contour

 Developed diaphragm seals

 New design of shroud seals

Single-sealing housing carrier design ensures as follows:

1. exclusion of buckling,

2. exclusion of damages to the strips of the sealing rings,

3. insensibility of gland to the temperature fluctuations,

4. exclusion of steaming,

5. increase in reliability,

6. reduction of scope and time of assembling works,

7. decrease in radial clearance values by 30 – 40%.

The gland of a similar design has been installed in turbine K-255-162at Alholma power station in Finland.

Output losses are reduced by 1000-1250 kW

Turbine K-200-130 (K-225-130), modernized LPC

1. Damping wires are eliminated from steam flow path

2. New steam flow path using stationary blades with tangential lean andlast stage moving blade of 960 mm

3. Integral milled shrouds, welded diaphragms

4. Adjusted flow angles and airfoil angles

5. Smooth meridian contour

6. Elimination of film moisture

7. Modernization of exhaust branch

8. Developed diaphragm seals

9. New design of shroud seals

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