Wind Turbine Forged Lock Nut

Product Description

Long term strategic parnership with CNEG ( China National Erzhong Group) and DEC (Dongfang Turbine Co., Ltd.), since April 2003.Authoried Supplier of Y&J.Standard: GB EN AISI ASTM SAE ASME DIN JIS.ASTM ASME.Years experiences in OEM and ODM.Material: 4130, 4140, 4317, 4142, 4340, UNS440, 34CrNi3Mo, 25Cr2Ni4MOV, 18CrNiMo5, 30CrMo, 9Cr2Mo, 9Cr2W, 9Cr3Mo, 60CrMoV etc.Application Range: 1MW to 3 MW Wind Turbine.Measuring & Testing: Projecting Profile, Roughness Test, Hardness Test, concentricity Test etc.Package: Carton + Wood.FOB Port: Shanghai Port, Tianjin Port,or as request.

Company Information

Why us?

1. We have long term strategic partnership with CNEG (China National Erzhong Group) and DEC (Dongfang Turbine Co., Ltd.) since April 2003.

2. We are the authorized supplier of Y&J Industries Co., Ltd.

3. We have 11 years experiences in OEM & ODM.

4. We have obtained ISO9001:2000 in June 2004.

5. Our technical team has 10 professional specialists and senior experts, and 80 senior technical workers.

6. We have 4000 m² production area, and the main equipment are including but not limited:

Φ5m Vertical Lathe2.5m*6m Gantry CNC Boring and Milling Machine LenterSleeper (CNC) (1.5m, 3m, 5m)Boring and Milling Machine (Φ110, Φ130)Big lather (CNC)Rocker AccountingCO2 Gas Shielded Automatic Welding MachineTIG Welding MachineSemi-Automatic Cutting MachinePlasma Cutting MachineSilicon Rectifier Welding Machine

Our Services

Trade Process

Step 1: Tell us your requirements and basic specifications

Step 2: Start design according to the information which provide in step 1, and giving the design drawing. Quote an approximate price for you.

Step 3: When the design drawing and approximate price are accepted, then we will give you the detail technical proposal and the accurate price.

Step 4: All of the step 3 details are accepted, and then we will sign the contract, make the first payment and begin to produce.

Remark:

If you have the drawing, then we can provide the approximate price directly.

Existing Models 1.5MW:

Type		K70A/B	K77A/B/C	K77D/E	K82A/B/C
Rotor Diameter	M	70	77	77	82
Cut-in Wind Speed	M/S	3.5	3	3.5	3
Rated Wind Speed	M/S	12.5	12	11	10.5
Cut-out Wind Speed	M/S	25	20	25	25
Security Wind Speed	M/S	59.5	52.5	59.5	52.5
A =Normal climate, B = Cold climate, C and E = Anti-salt.

1MW Wind Turbine Feature

2.5MW Wind Turbine Technical Data

vMain Technical Features:

a) The pitch system is composed of pitch bearings, pitch control device including super capacitor, drive motor, pitch gearbox, automatic lubrication device.

High quality pitch bearings, automatic lubrication device adds grease for bearings and gears on timeSeparate regulating mechanism for every blade – “fail protection”Less electrical system maintenance, no hydraulic rotary parts, not necessary to consider the issue of being horizontal and wearIts seal structure allows for a variety of weather conditionsAutomatic lubrication device adds grease for blade bearings in time

b) Yaw System

Four-point contact bearing within a gear, driven by the three large – scale high – grade motorBraking system is composed of seven brakes, the yaw reduces clamp force by lowering the hydraulic when running, the nacelle is firmly fixed to the tower when not running

c) Hub and Blade

Use of high – quality ductile iron, with excellent mechanical properties and ductilityWith the casting structure of combination of Star – type and ball – type, achieve an optimal distribution Use of cone-shaped wind wheel to reduce the yaw rotational torque Meet the requirements of light weight and compact external dimensions

d) Main Shaft and Main Bearings

Using face to face bearing for shaft bearing, using durable lubrication to get the lasting fatigue lifeThe three – point bearing support of the drive train can reduce the impact to main bearings shaft and gearbox

e) Gearbox

One stage planetary gear and two stage parallel – axis gear (Helical teeth)High efficiency, oil cooling system, decrease the operating temperatureTwo stage oil filter systems can ensure high quality of the lubricating oil

Main Features

High reliability and efficiencyBest running stationaryMinimum size and weightIdeal weight balanceFully enclosed generator

f) Generator and Converter

Generator: Four pole double – fed asynchronous generatorConverter: Pulse – width modulated IGBT converter

Main Technical Features:

Completely closed generators attached to the air – air cooler to lower the temperature levelSelect the best speed rangeThe maximum power through the converter only 300kw Minimal loss of converterMinimal loss of ventilation equipment Minimum heat transmission tower junctionHigh efficiency and reliability

g) Tower

Main Technical Features:

The tower natural frequency is designed to be far away from exciting frequencyNo resonance in the wind turbine speed scopeThe tower components use the most reliable L flange connectionUse the medium – pressure cable transmission Outer wall is not magnetic, non-conductive to ensure that equipment and personal safetyStrong anti-interference abilityNo short-circuit

h) Lighting Protection System

Main Technical Features:

According to the IEC requirements, there are internal and external lightning protection systems External lightning protection will act through the blade receiver and weather frameBearing is effectively protected through the lightning conductive brushesOvervoltage protection discharger is used to protect the electrical systemCoupling made of glass cuts the current conduction between generator and gearboxConducting wires to ensure balance of the potential between generator and frame

i) Hub

Main Technical Features:

The deflector before the hub cover includes rainwater guide design concept, protecting the bearings and electrical parts from rainwaterMaintenance personnel can enter from nacelle to hub to maintain the pitch system Hub and blade are sufficiently rigid

Main Equipment List

Porducts Picture

Wind Turbine Parts Picture

Manufacture Equipments Picture

Wind Turbine Forged Lock Nut