Maison > Blog > Analysis on the causes of carbon brush fault of generator set

Analysis on the causes of carbon brush fault of generator set

la source:Précision Qianye temps:2022-9-15

In recent years, several safety briefings have successively reported shutdown accidents caused by carbon brush or rotor collector ring failure of large generator units, resulting in great economic losses to the enterprise.Carbon brushes are motor brushes. Improper maintenance and use of the carbon brush of the generator set during operation will cause accident load reduction or even shutdown.

       Factors leading to carbon brush fault

     Electromagnetic factors : when reactive or excitation current is adjusted, the spark of carbon brush has obvious change. When the exciter commutates, the contact between the carbon brush and the commutator is not good, and the contact resistance is too large ; the uneven thickness of the oxide film of the rectifier or slip ring causes the unbalanced distribution of carbon brush current ; or sudden change of load and sudden short circuit lead to abnormal voltage distribution between commutators ; unit overload and imbalance ; carbon brush selection is unreasonable, carbon brush spacing is not equal ; carbon brush quality issues, etc.

Mechanical factors : commutator center is not correct, rotor imbalance ; large vibration of the unit ; insulation bulge between commutators or commutators bulge ; carbon brush contact surface grinding is not smooth, or commutator surface roughness caused by poor contact ; the commutator surface is not clean ; the air gap under each reversing pole is unequal ; spring pressure on carbon brush is uneven or unsuitable ; carbon brush in the brush grip too loose and jump, or too tight carbon brush in the brush grip stuck, etc. Reduced operating speed or improved vibration will reduce sparks.

Chemical factors : When the unit is running in corrosive gas, or the unit is running in lack of oxygen, the copper oxide film formed naturally on the surface of the contact surface between the commutator and the carbon brush is destroyed, and the commutation of the formed approximate linear resistance does not exist, and the spark of the commutator is intensified in the process of forming the oxide film on the contact surface. The commutator ( or slip ring ) is corroded by acid gas or oil. Carbon brushes and commutators are contaminated.

The pressure of the carbon brush spring should conform to the manufacturer ‘ s regulations, so that the pressure of the carbon brush is uniform. The carbon brush spring produced by Qianye maintains the same pressure with the rectifier regardless of the length of the carbon brush. Larger rectifiers can be used to reduce sparks and electromagnetic interference.

     Shenzhen Qianye Precision Metal Co., Ltd. is a manufacturer specialized in providing high-precision springs. The company integrates product R & D, production, sales and services, and has engineering and management personnel with various technical skills and rich experience. Has successfully passed ISO9001, ISO14001 and TS16949 professional qualification certification. We sincerely welcome new and old customers and friends from all walks of life to visit the company to guide, negotiate business cooperation, Qianye Precision will sincerely serve you !

Dernières nouvelles

 China Designing a Constant Force Spring: A Guide to Achieving Optimal Performance
China Designing a Constant Force Spring: A Guide to Achieving Optimal Performance

Time:2023-8-24

Constant force springs, also known as clock springs or power springs, are mechanical devices that provide a constant force over a specific range of motion. They are widely used in various industries, including automotive, aerospace, medical, and electronics. Designing a constant force spring requires careful consideration of factors such as material selection, design parameters, and manufacturing processes to achieve optimal...

 Upgrade Your Window Decor with Spring Wire for Curtains
Upgrade Your Window Decor with Spring Wire for Curtains

Time:2023-8-16

When it comes to window decor, curtains play a vital role in enhancing the overall aesthetic appeal of a room. They not only provide privacy and control the amount of light entering the room but also add a touch of elegance and sophistication to any space. If you are looking to upgrade your window decor, one innovative and versatile solution...

 Spiral Wound Torsion Spring: A Helical Solution for Mechanical Energy Storage
Spiral Wound Torsion Spring: A Helical Solution for Mechanical Energy Storage

Time:2023-9-26

Introduction: In the quest for renewable and sustainable energy sources, the need for efficient energy storage solutions has become increasingly important. Mechanical energy storage offers a promising avenue for capturing and utilizing energy efficiently. One such solution is the spiral wound torsion spring, a helical device capable of storing mechanical energy. This article explores the design, working principle, and applications...

 Unveiling the Superiority of High Cycle Torsion Springs in Engineering Applications
Unveiling the Superiority of High Cycle Torsion Springs in Engineering Applications

Time:2023-7-15

Introduction Torsion springs play a vital role in various engineering applications, offering a distinct advantage over other types of springs due to their unique design and functionality. In this article, we aim to explore the superiority of high cycle torsion springs in engineering applications. By examining their characteristics, advantages, and diverse range of uses, we can gain a better understanding...

 Tailored Springs: Customized Solutions for Your Specific Needs
Tailored Springs: Customized Solutions for Your Specific Needs

Time:2023-6-20

Springs are an essential component in many products, ranging from simple pens to complex machines. They are known for their ability to store energy and release it when needed. However, not all springs are created equal. Depending on the application, different types of springs may be required to meet specific requirements. This is where tailored springs come in. Tailored springs...

 Custom Torsion Springs Made to Your Specifications
Custom Torsion Springs Made to Your Specifications

Time:2023-6-17

Torsion springs are an essential component of many devices, from garage doors to medical equipment. These springs are designed to store and release energy when twisted, making them a crucial part of many complex mechanisms. When it comes to designing and manufacturing torsion springs, precision and accuracy are essential. That's where custom torsion springs come in. Custom torsion springs are...

Product
 Ressort de puissance
Ressort de puissance
Caractéristique : Le ressort de puissance est enroulé par une bande d'acier. Une boîte à ressort est nécessaire pour limiter son diamètre extérieur. Le centre du ressort est relié à l'arbre. Lorsque...
 Ressort de balai de charbon
Ressort de balai de charbon
Caractéristique : 1. En raison de la force constante, quelle que soit la longueur du balai de charbon et du collecteur, la pression reste la même. 2. Le ressort à force constante réduit les balais de charbon...
 Service de conception d'optimisation
Service de conception d'optimisation
Des idées de produits, de la conception à la fabrication du produit fini, nous pouvons aider les clients à les réaliser et aider les clients à optimiser leurs produits du point de vue professionnel de l'utilisation du ressort, accélérer...
 Ressort à force variable
Ressort à force variable
Caractéristique: L'apparence du ressort à force variable et du ressort à torsion variable est très similaire au ressort à force constante et au ressort à torsion constante. Les ressorts à force variable et les ressorts à torsion variable peuvent...
 Services d'assemblage et de montage
Services d'assemblage et de montage
Qianye Company fournit non seulement la production de ressorts de précision, mais se concentre également sur la conception structurelle et les solutions fonctionnelles de l'ensemble du système de ressorts, et peut fournir un...
 Ressort à force constante
Ressort à force constante
Caractéristique: Les ressorts à force constante (force constante) sont roulés par des bandes d'acier inoxydable. Les bandes d'acier à haute résistance sont mises en forme par des équipements de production de ressorts spécifiques. Lorsque la force extérieure les redresse, le...