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STEAM TURBINE ISLAND

STEAM TURBINE ISLAND

Turbine Island Concept

Turbine Island Concept

RUNH Power, a professional power plant equipment supplier and EPC contractor, dedicates in construction and service of the global power industry.

The steam turbine generator and its auxiliary system are arranged in the steam engine room, through the main steam, water supply system, reheating system and boiler steam water system to achieve organic connection, and they are also relatively independent.

The performance and reliability of the turbo-generator set and its auxiliary system directly affect the whole performance and reliability of the power station. At the same time, the construction of the turbine room, the installation schedule of the turbine generator set and its auxiliary system equipment, pipelines, has a huge impact on the duration of the whole project. Therefore, improveingthe reliability and efficiency of the main engine and the thermal system in the engine room; Optimizing plant layout and civil construction structure is of great significance for the construction and later operation of the power plant.

Turbine island scope

Turbine island scope

○ Turbine generator set and its auxiliary equipment  
○Condensate  system

○vacuuming system

○main steam system

○Deaerating, feed water system

○ Regenerative System
○ Closed/open circulating water system
○ Turbine island high and low voltage electrical and control system

Turbine Island Categorization

Turbine Island Categorization

Type of Power Station Applied

◆Conventional Thermal Power Plant

◆Steam-Gas Combined Cycle Power Plant

◆Waste Heat Recovery Power Plant (heat recovery from cement kiln, Coke oven gas, etc.)

◆Waste to Energy Power Plant

◆Concentrated Solar Power Plant

Different turbine arrangements

◆Axial Exhaust Steam Turbine

◆Upward Exhaust Steam Turbine

◆Downward Exhaust Steam Turbine


Features and Advantages

Features and Advantages

Introduction of upward exhaust steam turbine

Introduction of upward exhaust steam turbine

The steam exhaust is located on the upper cylinder. The upward exhaust steam turbine adopts ground mounted arrangement, which is applicable for small capacity steam turbine.


Ground mounted arrangement needs only to excavate and pour the foundation;

The advantage of ground mounted arrangement (applied for a unit 1 mw - 9 mw) 

●Turbine uses common base frame, skid mounted which shorten the installation duration

●Lower the main building height, without high operation level which saves quantity of civil works

●Easy and convenient operation


60%-80% cost saving on investment of civil work of foundation 

Introduction of downward exhaust steam turbine

Introduction of downward exhaust steam turbine

The steam exhaust is located on lower casing of the turbine. The double-layer arrangement is applicable for all capacity machines. It needs to deal with the foundation and turbine table.

Advantages of double-layer arrangement: 

○Abundant space for equipment and piping layout and plant layout is relatively neat; 

○Close distance between turbine hall and control room makes a convenient operation for operators; 



Advantages and characteristics of shaft exhaust steam engine

Advantages and characteristics of shaft exhaust steam engine

● Optimized plant layout, high efficient 3D design

Using advanced 3D design software. Optimize turbine island processes and architectural design.


● Turbine Island equipments integration

Selecting high efficient turbine generator set and auxiliary equipments to greatly improve the efficiency of the unit and reduce the heat rate and steam rate.


● Civil work quantity reducing, construction duration shortening and investment saving

(1)Greatly save the concrete, rebar and structure steel consumption

(2)Save construction tools and equipments, shorten the construction period about 2 months

(3)With skid-mounted turbine generator set, the installation duration of the equipment is reduced by more than 50%.





● Comparative analysis of initial investment and economic benefit of 30MW high temperature and high pressure condensing unit

Using advanced 3D design software, optimized turbine island  and optimized architectural design.

conventional unit
○ Unit cycle efficiency ~ 36%;
○ Initial equipment price ~ 20 million；
○ downward exhaust steam construction cost more than ~ 3 million;
○ Overhaul cycle ≤4 years

High efficiency unit
○ Unit cycle efficiency ~ 39.2%
○ Initial equipment price  ~ 30 million;
○ Axial exhaust steam site construction cost saving ~ 3 million
○ Overhaul cycle ≥8 years.

economic and efficiency analysis
At the same steam flow rate, the high efficiency unit can obtain additional revenue per year:（39.2%-36%）×75000kw×8760h/year×0.5元/kwh=10.512million yuan;
Multiple input part of high-efficiency units payback period [（30million—3moillion）-200million]/10.512million yuan≈8 months;
The high efficiency steam engine has low construction cost, long overhaul period, and saves later operation cost.

The advantage of Engine Island

The advantage of Engine Island

● Longer maintenance interval

With selection of high quality turbine machine and as well professional installation engineers, it ensures a continuous operation of 8 years without turbine overhaul which greatly extend the maintenance interval and save the operation cost.


● High automation level of the system

Reliable automation equipments are customized and configured according to clients’ demands which ensure less manpower but efficient operation.


● Perfect technical service team, timelyspare parts supplying, overhaul and other services

Runh has an independent after-sales service team, which can provide timely and comprehensive protection for customers.

24-hour timely response;

Turbine transformation, including efficiency improvement, capacity increase, heat supply transformation, high back pressure transformation, etc;

overhaul;

Spare parts service.

Typical engineering performance

Typical engineering performance

  • Barath 2×350MW turbine Island project in India

    Project scope: Design, supply, installation and debugging of steam island, civil construction and operation and maintenance guidance, power plant operating training.

    turbine:N350-16.7/537/537   generator: QFSN-350-2

    Steam turbine model: N15-4.90

    In February 2016, with the #1 unit reached full load in trial operation, and the highest load of 378MW, the unit all indicators showed they are normal.

  • India SKS 2×300MW turbine Island project

    Project scope: turbine island design, supply and debugging, civil construction and equipment installation guidance, power plant operatingtraining

    Turbine: N300-16.7/538/538

    Generator: QFSN-300-2

  • Indonesia Lombok 2×30MW turbine Island project

    Project scope: design, equipment supply, installation and debugging, civil construction guidance and training.

    Turbine: N30-8.83

    Generator: QF-30-2/10500V

  • India Uttam Galvanizing Steel plant 2 x 30MW power station

    Project scope:plant design, plant equipment supply, civil construction guidance, installation and debugging, operation and maintenance, training.

    The project won five gold awards in the "2014 Mumbai State Energy Enterprise Management Evaluation Competition", including: fuel preparation equipment, furnace equipment and fuel transportation equipment , plant construction and warehouse management.

    Boiler(CFBC):YG－130/9.81
    Turbine: N30－8.83/3.6/0.904
    Generator:QF－30－2

  • Nigeria 1×16MW coal-fired power plant EPC project

    Project scope: plant design, plant equipment supply, civil construction, installation and debugging, training, 5 years of power plant operating.

    This project is a captive power plant owned by the cement factory, and Runh provides the owner with Siemens single-layer arrangement, axial exhaust, steam condensation air cooling equipment.

    Turbine: N16-8.5-495℃
    Generator: 16-11KV

  • Pakistan 1×18MW coal-fired power station project

    Project scope: plant design, whole plant equipment supply, civil construction guidance, installation and debugging guidance, operation and maintenance guidance and training.

    On the basis of the first and second operation and maintenance contracts, on August 31, 2017, Runh Power Plant Co., Ltd. signed the third operation and maintenance contract with CENTURY PAPER & BOARD MILLS LIMITED of Pakistan.

    Boiler: 1×65t/h (CFBC)      ENK50/63 Turbine: ENK50/63

    Generator:QFNW-20-2

  • 2X31MW coal-fired power station project in soma Karim, Indonesia

    Project scope: plant design, plant equipment supply, civil construction, installation and debugging, training, 5 years of power plant operation.

    On the basis of the first and second operation and maintenance contracts, on August 31, 2017, Runh Power Plant Co., Ltd. signed the third operation and maintenance contract with CENTURY PAPER & BOARD MILLS LIMITED of Pakistan.

    Turbine: N31-8.83/535    Generator:QF31-2/10.5KV
    Boiler: Two 130 t/h high temperature and high pressure parameter CFBB