What is a generator bracket
The generator bracket is a key component that supports and fixes the generator rotor. Its main functions include:
Structure and Function
It is formed by welding Q235A carbon steel plates, equipped with driving end brackets, driven end brackets and drive devices. The stable support of the rotor system is achieved through an electric/manual dual-mode drive system. Typical application scenarios include steam turbine generators and permanent magnet semi-direct drive motors, which can be adapted to rotors with diameters ranging from 400 to 600mm, and the weight load is reduced through a combination structure of polygonal iron rings and Y-shaped vertical supports.
Technical features
The innovative design adopts a hydraulic limit mechanism to ensure stable support during the processing
The adjustable air volume technology reduces ventilation loss
Enhanced load-bearing capacity design ADAPTS to complex working conditions
In the field of hydropower, the rotor support, as a core component of the hydroelectric generator, needs to transmit torque and ensure the stable operation of the unit. For instance, the rotor support of the world's first single-unit capacity largest impact hydroelectric generating unit has a maximum diameter of 7 meters and weighs over 120 tons. The stress level is reduced through a inclined element structure.
The core functions of the generator bracket (rotor bracket) include:
Fixed yoke and torque transmission
As a key component of the generator rotor, the bracket connects the main shaft to the yoke, which serves to fix the yoke and transmit torque to the entire rotor system. During operation, it needs to withstand the gravitational moment of the magnetic yoke and magnetic poles as well as the centrifugal force of the rotor.
Structural support and maintenance design
It is formed by welding carbon steel plates and is equipped with a detachable maintenance structure for easy maintenance. Some designs adopt a combined structure of polygonal iron rings and Y-shaped vertical supports, which reduces the weight load and enhances the structural reliability.
Ventilation and stress control
The ventilation loss can be reduced through the optimized design of the air path, and the matching of the air intake hole position can minimize the negative impact of oil mist. The innovative structure of the inclined element effectively controls the overall stress level, ensuring the stable operation of the unit under complex working conditions.
Compatibility and durability
It is compatible with steam turbine generator rotors with diameters ranging from 400 to 600mm and can be flexibly maintained through an electric/manual dual-mode drive system. Some models adopt hydraulic limit mechanisms to ensure processing stability and extend service life.
Damage to the engine bracket may lead to the following problems:
"Safety hazard"
A damaged bracket can cause unstable engine operation, possibly leading to severe shaking or abnormal noise. In severe cases, it may result in parts falling off or engine damage.
Maintenance suggestions
The bracket usually needs to be replaced immediately to ensure driving safety. In some cases, the function can be restored by cleaning, lubricating or adjusting the components, but professional maintenance is required to confirm the specific extent of the damage.
Potential causes
Material fatigue, corrosion or design flaws may cause the support to break, and the specific cause needs to be determined through physical and chemical testing.
The breakage of the generator bracket may be caused by the following reasons
Material defect
Youdaoplaceholder0 Unqualified graphite morphology : If E-type graphite (dendrite graphite distributed in a certain direction) exists in gray cast iron supports, it will reduce the strength of the matrix, cause stress concentration and lead to fracture.
Youdaoplaceholder0 Casting defects : Surface defects such as tiny holes, slag inclusions or gas holes can reduce the strength of the material, especially in thin-walled areas or at corners where cracks are prone to occur.
Structural problem
Youdaoplaceholder0 Uneven force distribution : If the force is uneven when the bolts are fixed (such as when the engine and the vehicle body are offset), it will cause local stress concentration, which is commonly seen in vehicles that have not been fully reset after accident repair.
Improvement measures
Youdaoplaceholder0 Optimize materials and processes : Ensure that the graphite morphology meets the A-type standard (pearlite proportion ≥98%), and reduce casting defects.
Youdaoplaceholder0 Repair process improvement : Thoroughly repair the deformed parts of the vehicle body to ensure the accurate relative position between the engine and the bracket.
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