arani r&mbrochure

8/7/2019 Arani R&MBrochure

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RenovationModernisationEngineering ImprovementsRepairs Division

ARANI POWER SYSTEMS LTD.Engineering Improvements, Repairs & Spares DivisionArani Power Systems is an original equipment manufacturer of SteamTurbines and supplies Systems, Components and Services in the eldof steam based, medium capacity power generation equipments.The systems cover widely TG Island that includes Steam Turbines,Alternators, Gearboxes and Heat Exchanger, with the state of artcontrols and all electricals that cover up to switch yards.

The extensive knowledge and experience of our team of visionaryleaders and strategic thinkers drive us to many new and excitingdevelopments. Our distinctive blend of academic and technical

knowledge allows us to provide a wide range of solutions and ser-vices to power industry. Headquartered in Hyderabad, Arani Powerprovides cutting edge technology turbines and power solutions. Oursophisticated, high performance solutions together with our unparal-leled expertise, drives our clients to become value-based, perfor-mance-focused organizations. We have a good R&D team (whohave patents in turbo machinery area) working on the present rangeof products, as well as, on the new products and striving to bring outas many new features as possible to enhance the product efciencyand operational performance.

A well planned Refurbishment and Modernization activity enhancesefciency, increases capacity and improves reliability of a powerplant. Through Refurbishment and Modernization, a plant can boost

its efciency, reliability and extension of service life.


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Some of the major services offered are

Steam path upgrades

Efciency improvement in STG

Renovation & Modernization

On site and shop repair services

(i) Diaphragm Weld repairs

(ii)Rotor blade repairs.

STG Island and BOP Engineering services

Spares / Renovation and reverse engineering

of STs and GTs Spares

MHC to EHC Governing uprates

Generator rotor repair & rewinds

Generator Stator repair & rewinds

Relocation of STGs

Retrot & installation of Vibration monitoring

systems

Pumps & Compressors Spares and services

Overhaul & troubleshooting services

Modernization

Change of governing systems. Ex: mechanical /hydraulic to electronic systemsChange of electricalsChange of condensing systemUp-rating power capacityReplacements of high capacity turbines on theexisting foundationInstallation of Turbovisory EquipmentsInstallation of Monitoring Solutions

Engineering Improvements

Performance measurement & evaluation ofefciencies of the cycle as a whole orTurbine alone

a) Renovation

Improvements in efciency at componentlevel or at complete cycle level that includessteam ow path(Blading), heat exchangersand pumps by providing complete engineer-ing and design solutions - Better ow path canbe developed by CFD analysis

b) Life time extension:

RLA studies of rotors, casings and other criticalcomponents

Metallurgical and design improvementsReplacement of critical components

Before After Before After


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Repair & Replacement

Analysis of Chronic failures of blades by expertsthrough state of the art well established FE analy-sis and the design improvement of blades either inshape or size to mitigate stress related problems. Met-allurgical improvements also implemented

Eroded, corroded and pitted blades will be

replaced by reverse engineering by bringing inappropriate improvements in metallurgy based onmerits of the case

Rotor grooves and Blade roots are evaluated forstructural integrity and improved by FEA analysis

Rotor bends related repairs and balancing solutions

Chronic problems with respect to rotor bearingsystem dynamics are analyzed and appropriateenhancements in the rotors and bearings offered

Repair of rotor journals by study of complete rotor-bearing interactions

Supply ofNew rotors with improved or identical blad-

ing with better metallurgy .

a) Blades replacement:

b) Repair and replacement of bladed rotors:

Repair & supply of bearings

Analysing of Solving vibration problem and chronic

problems by providing expert services for diagnos-tics and analysis

Solutions for hunting problems

Replacement of existing sealing systems andproviding better engineering solution

Poor vacuum problems resolution

Repair / rewind of Generator rotor

Partial / full rewinds of Generatorstator

Supply of bearing / all deectorsseals etc.

Servicing & Spares

Over hauling

Trouble shooting of chronicproblems and resolution

Supply of spares for any makeST&G by reverse engineering

Major spares covered are blades,diaphragms, bearings, valve

cones, valve spindle, labyrinthseals, governing components,couplings etc.

Technical advisory services

Trouble shooting and resolution

Energy auditing

Improvements in operation &maintenance procedures

Improvements in start up systems

and procedures

c)

d)

e)

f)

g)

Generator Services

In partnership with our customers, Arani Power System mission is to deliver optimum Steam urbine based power solutionsand related Refurbishment and Modernization services with highest possible quality.Further, we are dedicated to beingtechnically superior, responsive, agile and customer focused while providing reliable, cost-effective solutions and qualityservices.

We will remain as a driving force in the development of innovative solutions, services and technologiesrelating to all aspects of Refurbishment and Modernization of existing units of all the makes and decentralized powersupply with Steam Turbines and related products.

We work with suppliers as partners and collaborate for better win-win situations.


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Causes of strength deterioration that lead to equipment failure

Reduced nozzle area

Eroded Diaphragm

Greater gaps in Packing

Defective dovetail on the LP Rotor

Damaged nal stage blade & erosion Shield

Defective Fork-Type dovetail pin

Damaged bellows on the crossover pipe

Eroded main stop valve stem

Eroded rst stage HP nozzle

Eroded rst stage of IP nozzle

Eroded rst stage of IP blade

Damaged Bolts

Defarmed Diaphragm

Bent Rotor

Damaged Blade

Fractured Control Valve Rod

Cracked Casing

Cracked Rotor

Damaged nozzle Box

Damaged Rotor

Damaged Casing

Damaged Bolt

Buildup of Scales

Wear

Corrosion

Wear

Creep

Fatigue

Brittleness

Contact:Arani Power Systems Ltd.

3rd Floor, Icon Block, Satyanarayana Enclave,Madina Guda, Hyderabad - 50. A.P. India.Tel: +91 40 23040851 / 52 / 53 / 54 / 55Fax: +91 40 23040856E-mail : [email protected]: www.Aranipower.com

Quality Deteriorating due to Aging

Causes of efciency deterioration that leads to increased fuel consumption

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