Crane Configuration for Power Equipment Manufacturing
Power equipment manufacturing is organized around four categories: boilers, steam turbines, generators, and auxiliary systems. For boiler drums, QD Type cranes rated 50–150 t are used; steam turbine casings and rotors also use QD Type 50–150 t; generator stators are handled by QD Type 50–150 t; and auxiliary equipment is served by LD Type 10–30 t. Across the complete plant, capacities range from 300,000 to 2,000,000 lb (136,000–907,000 kg). Rotors balanced to G1 grade require a dedicated spreader beam.
Boiler Manufacturing: Heavy Lifting for Drums
Boiler drums range from 1.5–3 m in diameter and 10–25 m in length, weighing 20–80 t. The recommended solution is a QD Type crane rated 50–150 t. Post-weld stress-relief heat treatment at 620°C requires crane assistance for furnace loading and unloading. Kelude's boiler bay cranes come standard with variable frequency dual-speed drives and anti-sway control.
Membrane wall assembly involves welding steel tubes and flat bars into complete panels on a platform, with widths of 1–3 m and lengths of 10–30 m. Each membrane panel weighs 5–20 t and requires a multi-point spreader beam (spacing ≤3 m) during hoisting to prevent deformation. Kelude equips its boiler bay cranes with multi-point lifting systems as standard.
Steam Turbine Manufacturing: Precision Assembly of Casings and Rotors
HP/IP casings weigh 10–50 t each, with horizontal joint clearances held to ≤0.03 mm. Rotors range from 5–30 t and are balanced to G1 grade. The recommended solution is a QD Type crane rated 50–150 t. Kelude cranes come standard with creep speed control at 0.5–2 m/min.
Diaphragm and vane ring assembly demands tight accuracy—radial clearances must be maintained within ≤0.5 mm. Each diaphragm weighs 3–15 t, and 8–15 stages are installed in the lower casing. Kelude's turbine bay cranes are equipped with both creep speed and height limit switches as a dual safety measure.
Generator Manufacturing: Stator and Rotor Installation
Stators weigh 50–150 t, rotors 30–80 t, with air gaps of 5–10 mm. The recommended solution is a QD Type crane rated 50–150 t, paired with a dedicated installation control program.
Rotor coil (copper wire) insertion is performed in the rotor slots, with the rotor supported on a dedicated stand that allows rotation. The crane assists with rotor flipping and transport (30–80 t). Cooler and sealing oil system components for air-cooled and hydrogen-cooled generators weigh 3–8 t each.
Auxiliary Equipment Manufacturing: Condensers and Heaters
Condenser housings weigh 10–30 t, and heaters 5–15 t. The recommended solution is an LD Type crane rated 10–30 t.
Boiler QD Type50-150t Steam Drum20-80t | steam turbine QD Type50-150t G1rotor | generator QD Type50-150t Threading |
Auxiliary Equipment LD Type10-30t | rotor Lifting spreader G1Stage Spreader Beam | complete plant 30-20010,000 |
Crane Configuration Table for Power Generation Equipment
| Equipment | Machine Model | tonnage | Core | Accuracy | investment |
|---|---|---|---|---|---|
| Boiler | QD Type | 50-150t | Steam Drum | Elimination Stress | 40-15010,000 |
| steam turbine | QD Type | 50-150t | Pneumatic Cylinder/rotor | Horizontal Joint Face≤0.03mm | 40-15010,000 |
| generator | QD Type | 50-150t | Stator/rotor | Air Gap5-10mm | 40-15010,000 |
| Auxiliary Equipment | LD Type | 10-30t | Condenser | Conventional | 15-4010,000 |
Kelude Heavy Industry provides heavy-duty crane solutions for the power generation equipment sector, covering stress-relief heat treatment hoisting of boiler drums, precision handling of G1-class steam turbine rotors, and generator rotor insertion.
Boiler Heavy load QD Type50-150t+variable frequency dual-speed+anti-sway control | Precision Hoisting G1Stagerotor Spreader Beam+Creep speed | Threading Expertise generatorrotor Threading-Specific Procedure |
FAQ: Heavy Component Hoisting & Precision Requirements
Q: How do you hoist a long boiler steam drum?
A: Steam drums range from 10–25 m in length and weigh 20–80 t. A multi-point lifting arrangement with 4–8 points is required to prevent deformation. Post-weld stress-relieving heat treatment (620°C) demands high-temperature wire rope. Kelude offers specialized spreaders for boiler steam drums.
Q: What accuracy requirements apply to steam turbine rotor hoisting?
A: Steam turbine rotors require G1 dynamic balancing (1 μm/kg eccentricity), with a levelness tolerance of ≤0.05 mm/m during lifting and transport. Kelude's G1 rotor spreaders come standard with an online levelness monitoring system.
Q: How is generator rotor insertion coordinated?
A: The rotor-to-stator air gap is 5–10 mm, requiring a dedicated PLC program for one-touch insertion control. Kelude provides interlocking control solutions for generator rotor insertion cranes.
Q: What precautions apply to boiler membrane wall hoisting?
A: Membrane walls measure 10–30 m long, 1–3 m wide, and weigh 5–20 t per panel. Multi-point lifting with spacing ≤3 m is essential for deformation prevention. Kelude offers specialized spreaders for membrane walls.
