dafa wind · pdf file2 dafa wind – partnership for superior performance in the wind...

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DAFA WIND

Foam, rubber and plastic solutions that seal, absorb and protect

Blades & TransportNacelle

Tower

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DAFA WIND – partnership for superior performance in the wind turbine industry

• DAFA A/S is a family-owned Danish company with more than 75 years of experience in the development, production and sale of special foam, rubber and plastic products

• More than 300 employees worldwide, work-ing in consultancy, development, customer service, production and logistics

• Close collaboration with a wide variety of international business partners and suppliers

• State-of-the-art industrial production equip-ment with the latest and most advanced robot-guided machinery and processes to ensure delivery of competitive solutions

• Effective logistics and efficient delivery that match your production processes

• DAFA A/S is geared to accommodating new and untried challenges in foam or rubber solutions that seal, absorb and protect.

• Valuable, commercial contributions to make your wind turbine manufacturing stronger and more competitive.

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DAFA A/S has extensive experience in the wind turbine industry. We have close, long-standing business relation-ships with several of the largest wind turbine manufacturers worldwide.

At the same time, we work closely with and are part of a network of external suppliers to the wind turbine industry, helped greatly by our involvement in the Danish Wind Ex-port Association (DWEA), Bundesverband WindEnergie (BWE), American Wind Energy Association (AWEA) and Danish Wind Energy Group China (DWEGC).

Strong onshore and offshore relationships worldwide

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DAFA WIND – improving functions and applications in the wind turbine industry

The wind turbine industry is constantly developing and expanding. New solutions, methods, technologies and designs keep emerging. With extensive insight and a great deal of experience in wind turbines, DAFA contributes to this development.

This makes DAFA your trusted business partner for foam, rubber and plastic solutions that improve wind turbine functions –

onshore and offshore.

DAFA’s nacelle solutions are many and varied. These solutions help structures and electronic components in the nacelle to withstand stress, to perform better and thus to last longer.

DAFA’s solutions for tower structures im-prove safety to avoid accidents and make maintenance easier. This benefits the operating costs and increases the durabil-ity and service life of the tower.

DAFA’s tower solutions make transporta-tion safer, thus reducing expensive re-pairs. And our Foundation System Solution for recessing ensures a time-saving and effortless implementation.

Nacelle

Tower

Safety is of vital importance when trans-porting blades, and high quality is crucial in the manufacture of blades.

In both cases, DAFA’s foam and rubber solutions offer significant benefits for the design and strength of the blades, making them last longer.

Blades & Transport

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The challenges of the wind turbine industry are important and relevant – both locally for the individual manufacturer and globally because wind turbines make a significant contribution to a better environment and sustainability.

In this industry, technological developments are constantly challenged with new, innovative solutions and methods.

DAFA offers expertise in three key areas:

Seals• Seals to prevent sand, dust, water and

moisture from penetrating the structures of wind turbines

• No degradation or damage to vital components

• Better wind turbine performance

• Extended durability

Absorbs• Reduces the reflection of airborne noise

in the wind turbine

• Provides dampening when the source of the noise has to be insulated or screened off

• Prevents plate vibrations from being reproduced in structures or reaching electronic components

Protects• Protects against impact, heavy loads,

momentary influences, static and shear stress

• Distributes load forces or serves as a shock absorber

• Prevents the equipment from break down

• Provides safety for the personnel

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Let yourself inspire by the areas of application for DAFA’s nacelle solutions.

On the following pages, the different cases will guide you through the function and benefits of the various nacelle solutions.

Nacelle

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When different materials meet, creating a seal to prevent penetration of water, salt, sand and dust is even more demanding. Special gaskets for fibreglass and steel structures provide the seal required, despite great shear stress.

Advantages

• Flexible products – absorbing tolerances

• Adheres to both steel and fibreglass

• Quick and easy mounting

• Materials ensuring long service life and durability

Multiple materials, close interaction

DAFA Soft, DAFA Cell, cellular rubber profiles, self-adhesive profiles and EPDM profiles are some of the product types used as gaskets in fibreglass and steel structures.

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Nacelle

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There is a constant focus on reducing noise from wind turbines, which can be an environmental nuisance. This applies to both high-frequency and low-frequency noise.

Accordingly, effective sound damping is essential for a good outcome so that neighbours and wind turbines can coexist in harmony. DAFA Sound is a com-plete industrial sound damping concept designed and developed to combine sound absorption, sound insulation and structural sound damping – in one or more varieties.

DAFA Sound damping creates harmony between wind turbines and people

Structural sound damping– to prevent the transfer of vibrations

Sound insulation– to insulate or screen off the source of

the sound from its environment

Sound absorption– to reduce the reflection of airborne sound

• DAFA Sound ABS™ – for sound absorption based on fire retardant PUR foam

• DAFA Sound ISO™ – for sound insulation based on high density PUR foam

• DAFA Sound BLOCKER™ – heavy-duty foils based on EPDM rubber, cardboard or bitumen

• DAFA Sound COMBI™ – combines products with different characteris-tics – e.g. bitumen and PUR foam

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Nacelle

DAFA solutions are the best choice for keeping the rotating parts of the nacelle free of salt, sand, water and dust, or when stringent requirements have to be met for sealing the nacelle and hub.

Advantages

• Durable and easily replaceable prod-ucts

• Absorption and equalisation of toler-ances

• Reduced penetration of cold, heat, sound, dust, water and salt

• Using DAFA RotaSeal optimises the uptime for the wind turbine preventing water, sand, salt and other particles from entering critical parts such as electronics and hydraulics

• DAFA RotaSeal is designed for fast and efficient mounting, both horizon-tally and vertically

Download the product sheet on our website

DAFA RotaSeal® increases productivity

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DAFA A/S • Holmstrupgårdvej 12 • DK-8220 Brabrand • Tel. +45 87 47 66 66 • E-mail [email protected] • www.dafa.dk

Technical material data

Specification UnitDAFA Combi PTM DAFA PUR STM DAFA PUR MTM

Color

Black Brown / Yellow Dark brown

Density DIN 1183-1 g/cm3 1,43

1,241,17

Hardness DIN ISO 7619-1 °Sh A ±5° 75

7070

Tensile strengthDIN 53504 MPa

10min 35 52

Elongation at breakDIN 53504 %

275min 500 800

Abrasion resistance*ISO 4649 mm3 353

1016,5

Compression set at 70° and 22h DIN ISO 815 %25

15

Tear strengthDIN ISO 34-1 N/mm 6

3054

Temperature resistance

°C-40 – +100 -40 – +70 -40 – +80

*Abrasion resistance tested according to ISO 4649. Distance 40 m and load 10 N

Determination of tensile stress at break according to DIN 53504

Exposed to media for 1000 hours at +65°C

Un

exp

ose

d r

efe

ren

ce v

alu

e =

In

dex 100 %

Antifreeze

Eurol Coolant

Hydraulic fluid

Hyspin AWH-M32

Gear oil

Optigear CT320

Gear oil

Optigear X320

Grease

Optimal Optipit

EPDM rubber

60° Shore A

DAFA Combi PTM

DAFA PUR MTM

DAFA PUR STM

Recommended range20 - 110 mm

t = 4 - 7 mm

t = 4

- 7

mm



t = 4

- 7

mm

• DAFA RotaSeal materials are tested up against common hydraulic and gear oils, antifreeze fluids and greases ac-cording to DIN 53504

• DAFA RotaSeal is tested for abrasion properties according to DIN ISO 4649

• DAFA RotaSeal is designed for a wide range of constructions and adopts to tolerances in the given application

• Clamping profiles are produced with stainless steel EN 1.4301

• DAFA RotaSeal solutions are designed focusing on low friction and abrasion

• DAFA RotaSeal solutions fit both fi-breglass, steel and aluminium flanges and plates

• DAFA RotaSeal is tested for wear ac-cording to ASTM G99

• Fast delivery

DAFA RotaSeal solutions are designed for optimal long-life sealing solutions for rotating parts in wind turbines.

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EPDM cellular rubber gaskets are particularly suitable for large roof hatches.

The roof hatch of the nacelle has large surfaces with large tolerances, which must be sealed and capable of diverting water.

The design and the choice of materials are handled individually, corresponding to your specific requirements.

Advantages

• Solutions based on proven and tested technology

• Robust, durable materials, capable of absorbing large tolerances and movements

• Greater durability and a longer service life

Sealing of large surfaces – right at the top

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Nacelle

Doors and skylights are sealed using cellular and rubber profiles that can be supplied as rings to ensure a sealed joint. For hatches, self-adhesive sealing strips are used in various elastic materials.

Requirements for sealing doors, hatches and skylights mainly address the need to keep out pouring rain. The solution consists of products which:

• Equalise tolerances

• Ensure easy mounting

• Ensure a long service life and durability

Durable solutions for a long service life

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Butyl and silicone profiles for sealing in composite moulding processes.

Complete sealing solutions for moulding of fibreglass elements. The goal is to optimise and streamline the production process by reducing and facilitating the work processes.

This results in operational reliability and a uniform moulding process to ensure the high quality of the final products.

• Reliable sealing

• Temperature resistant

• Resistant to the materials used for the moulding processes

Reliable moulding process with sealed joints

Sharp edges can make for a par-ticularly unpleasant encounter for workers carrying out maintenance. The same sharp edges can also ruin leads and cables, causing damage over time.

Our customised edge profiles:

• Are easy to replace and can be retrofitted

• Reduce repair and maintenance costs

• Contributes to a safer working environment

When sharp edges must be soft and round

To protect sharp edges, DAFA supplies customised edge profiles with or without steel inserts.

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Easy removal and fitting of doors, hatches and panels using self-adhesive strips, expanding DAFA Flex sealing strips and rubber profiles for sealing between components.

Reliable solutions for facilitating service and maintenance processes.

Advantages

• Customised sealing strips for maximum sealing

• Minimise risks in connection with mounting and dismantling

• Quick, easy and efficient mounting in the production hall or on site

• No waste of precious time for hardening, as with joint sealant

• Elastic sealing strips that withstand extreme movements

• Greater durability, long service life and a better working environment

• Expanding sealing strips for structures with large tolerances

Sealed joints and a safe working environment

Nacelle

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When cables, leads and pipes have to penetrate walls, floors and other structures, effective sealing products are required – for construction and maintenance alike.

Advantages

• No special tools, sealing, glue or grouting required

• Temperature resistant at mounting

• Can be designed to comply with IP sealing requirements

• Easy to replace and can be retrofitted

• Reduced repair and maintenance costs

• Flexible, universal seal

Cable and pipe solutions

The challenge is to dampen vibrations and prevent them from straining and spreading to the vital parts and struc-tures of the nacelle.

Advantages

• Reduces vibrations

• Fewer production shutdowns and increased operational reliability

• Reduced maintenance costs

• Greater durability and a longer service life

Vibration damping

Cable and pipe seals are universal and fit many different sizes.

Vibration damping using PUR foam and rubber.

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Nacelle

Courtesy of Vestas Wind Systems A/S

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Our moulded parts are customised for individual applications – for all indu-stry segments. They satisfy require-ments for sealing functions, flexibility, damping, durability and resistance to chemicals all at once.

Advantages

• Technical rubber types

• Unique properties

• Flexible series runs

• Available in small and large sizes

• From simple to complex parts

• Focused development process

• Qualified advice

• NR rubber

• EPDM rubber

• Silicone rubber

• EPDM sponge rubber

• CR rubber

• PUR rubber

• NBR rubber

• TPE

Moulded parts – customised for individual applications

DAFA develops and delivers customer-specific moulded components in both small and large sizes.

Depending on the complexity of the component and its design, we develop and produce a customer-specific tool that is perfectly adapted to the indivi-dual application of one of the following production methods:

• Compression moulding

• Transfer moulding

• Injection moulding

• Vulcanised corners

Developing and producing moulded parts demands access to a wide range of raw materials.

The varying properties of the raw materials form the basis for com-binations that create unique and individual components perfectly customised to the individual task.

A sound basis with a wide range of raw materials

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DAFA’s blade solutions are particularly suitable for both transportation and storage of blades as well as during the moulding process.

On the following pages you will find a presentation of the various blade solutions.

Blades

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Protecting the fragile blade tips during handling and trans-port is crucial. DAFA universal tip protector prevents damag-es, ensures increased visibility and protects against personal injuries when people are in the vicinity of the blades.

DAFA universal tip protector - Protecting sensitive tips

Advantages:

• Optimal protection during transport, handling and onsite storage of blades

• Prevents costly delays due to damages and repairs

• Universal solutions that fits all blade types

• Increased visibility night and day

• A safer working environment

• Easy mounting, no tool costs

Shock-absorbing PE foam in signal colour. Available in versions for onsite storage and for transport.

DAFA universal tip protector is a unique one-size-fits-all solution.

Convenient tip marking for greater visibility during transport.

Possible add-on purchases: DAFA Strap Fix can be used to fix the strap in place, reduce load from the strap, and attach lighting equip-ment to the DAFA Tip Protector.

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DAFA CargoPro Transporthalterung.DAFA CargoPro Lagerhalterung.

DAFA CargoPro Klemmlösung.

The blades must arrive safely on site and should be stored properly.

DAFA CargoPro foam, rubber and plastic solutions keep the blades intact.

Advantages

• Does not deteriorate and can be reused with its functionality intact

• Large load-bearing capacity

• Weather resistant, with a long service life

• Safe transportation without damage or repairs

• Easy to handle

• High friction

Transport protection and safe storage

DAFA CargoPro®

DAFA CargoPro cradle for transportation.

DAFA CargoPro cradle for storage.

DAFA CargoPro clamp solution.

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Universal and flexible solutions for protection of trailing edge and surface.

The solutions is primarily intended to protect and secure the trailing edge and surface of the blade when it is attached using transportation straps etc.

Advantages

• Fewer repairs

• Flexible fit

• Bright signal colours for increased safety

• Easy mounting and handling

• Long service life and durability

Safe universal protection of the trailing edge and surface

DAFA CargoPro®

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Blades

The process of moulding fibreglass elements must proceed efficiently and with maximum safety. Our sealing profiles in silicone and other production auxilia-ries contribute to optimising the production process.

Advantages

• Reliable and uniform moulding process to ensure high quality

• Improves efficiency by reducing and facilitating work processes

• Products with excellent adhesive properties

• Temperature-resistant products

• Resistant to the materials used in the moulding processes

Safe moulding process for top performance

Butyl and silicone profiles for sealing in moulding processes.

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In some cold areas, de-icing and anti-icing systems are necessary for large blades, to ensure optimum electricity production.

DAFA´s various insulation materials can be used to insulate the blade construction, or ducts for the transportation of hot air.

De-icing and anti-icing systems

Advantages • Light-weight insulation materials

• Flexible materials

• Withstand temperature extremes

• Customised solutions

• Various densities and flame retardant materials

Insulation materials for de-icing and anti-icing systems

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The following pages highlight some of DAFA’s solutions for production, transport, foundation and maintenance of the tower.

Tower

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Ensuring that the tower door is impervious to rain, dust and sand is crucial. The handling can be difficult. A simple, customised sealing profile with or without joints seals the door and facilitates an easy mounting – both when establishing the seal and during maintenance.

Advantages

• Supplied in rolls or rings to avoid joints

• Quick and efficient mounting

• Easy to retrofit

• Absorbs tolerances and movements

• Superior durability and exceptional service life

First-class sealing for doors

EPDM cellular rubber profile with steel or plastic insert for sealing tower doors.

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Tower

DAFA Tower Foundation System

The process of establishing a concrete foundation is awkward and time-consuming. This is very much the case with traditional recessing and shuttering using steel and wood. Thus, a custom-ized foam solution ensures particularly quick and effective implementation.

Advantages

• Customised solution


• Fast delivery

• Consistent moulding

• Minimum waste of high density concrete

• No tool costs

• Easy disposal

PE foam foundation blocks for recesses in the foundation.

Recessing in the foundation saves time and effort

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Transporting large towers weighing many tonnes requires a safe, protective underlay capable of distributing the pressure of the load. DAFA CargoSafe

is a reliable solution.

Advantages

• No deterioration and reuseable with its functionality intact

• Large load-bearing capacity and slip resistance

• Long service life due to weather resistance

• Safe transportation without damage or repairs

• Easy to handle

• High friction

Long-term security

Skidproof mats, DAFA Cargo Safe for protection during transportation.

Over time, jointing sealant may crack and lose its capacity to absorb mas-sive tolerances. A flexible rubber ring serves as a membrane and is a robust solution for sealing the foundation and tower.

At the same time, the liner diverts water and moisture.

Advantages




Sealing between foundation and tower

Rubber membranes for sealing and diverting water.

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DAFA Cell cellular rubber is suit-able for sealing platform joints.

The solution serves both as a seal and as a damper on the platforms. The solution comprises sealing strips to dampen vibrations and equalise tolerances to prevent water and oil from running down inside the tower.

Advantages





Tower

Preventing leaks

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A seal is required when tower sections are joined. Joint sealant can be awk-ward to work with and takes a long time to cure. Cracks – and thus leaks – may appear later.

The solution consists of rubber profiles or self-adhesive and flexible sealing strips.

Advantages

• Retains flexibility and elasticity

• Quick and easy mounting with no hardening time

• Weather-resistant joint solution

Clever solution for safely sealed sections

Self-adhesive sealing strips for both vertical and horizontal sealing when assembling tower elements.

The challenge is to seal the platforms in order to prevent loose objects, tools or equipment from having free passage.

This prevents injuries to personnel. In addition, the seal provides a neat finish against the side of the tower.

Advantages




• For small or large gaps

• Flexible materials and solutions

• Foam platform sealing profiles can be supplied in flame retardant material

Secure platform with sealing solutions

Rubber and foam profiles are used to seal the gap between the tower and the platform.

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Strong commitment

Always on time

Trustful collaboration

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Requirements for speed and quality play a vital role in all phases of collaboration. Our experience shows that it is vital to strike the right balance.

DAFA gives high priority to speed and quality. Both parameters apply as the focus is constantly on your current needs.

Our solutions must be effective and sustainable, as well as being developed, produced and delivered to the right place at the right time.

Our three step collaboration process creates the best foundation for achieving valuable results.

General agreement

• Definition of quality, functionality, scope, delivery times, prices and payment terms

• Starting point for a valued partnership

The right balance of speed and quality strengthens collaboration

Specification of requirements

• Initial contact and meetings

• Defining the task

• Preparing the specification of requirements for approval

Prototype and testing

• Preparing prototypes

• Testing in conjunction with your design

• Any further development

• Approval of functional and visual properties

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certified20159001ISO 201514001ISO

ENVIRONMENTAL CERTIFICATE

DAFA A/S (HQ)Tel +45 8747 6666 www.dafa.dk

DAFA Sealing Technology (Tianjin) Co., Ltd. Tel +86 10 8453 7428www.dafachina.cn

LinkedInlinkedin.dafa.dk

DAFA Polska sp. z o.o.Tel +48 22 739 04 00www.dafa-polska.pl

DAFA Italia S.r.l.Tel +39 0341 21141www.dafa-italia.it

DAFA Sverige AB Tel +46 431 258 30 www.dafa.se

DAFA Deutschland GmbHTel +49 2761 94295-0www.dafa-germany.de

DAFA US Inc.Tel +1 312 810 6909 www.dafa-as.com

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dafa wind · pdf file2 dafa wind – partnership for superior performance in the wind...

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