Heim > Bloggen > Analysis on the causes of carbon brush fault of generator set

Analysis on the causes of carbon brush fault of generator set

Quelle:Qianye-Präzision Zeit: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 Kohlebürstenfeder 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 !

Neuesten Nachrichten

 Custom Springs: Enhancing Medical Devices for Improved Healthcare
Custom Springs: Enhancing Medical Devices for Improved Healthcare

Time:2023-11-29

In the world of medical devices, precision and reliability are of utmost importance. These devices are designed to improve the quality of healthcare and save lives. One crucial component that plays a significant role in the functionality of these devices is custom springs. Custom springs are specially designed springs that are tailored to meet the specific needs of medical devices....

 Window Constant Force Spring: The Efficient Solution for Smooth and Balanced Movement in Opening and Closing Windows
Window Constant Force Spring: The Efficient Solution for Smooth and Balanced Movement in Opening and Closing Windows

Time:2023-7-16

Windows are an essential part of any building, allowing natural light and fresh air to enter while providing a view of the outside world. However, the ease and efficiency with which windows can be opened and closed greatly impact the overall user experience. This is where the window constant force spring comes into play, providing a solution for smooth and...

 Understanding the Importance of High Cycle Torsion Springs in Industrial Applications
Understanding the Importance of High Cycle Torsion Springs in Industrial Applications

Time:2023-8-18

Introduction Torsion springs are an essential component in various industrial applications. They are used to store and release rotational energy or torque in a wide range of mechanical systems. High cycle torsion springs play a crucial role in ensuring the smooth functioning and longevity of these systems. This article aims to shed light on the significance of high cycle torsion...

 Constant Force Linear Spring: The Science Behind Its Functionality
Constant Force Linear Spring: The Science Behind Its Functionality

Time:2023-6-3

Springs are an essential component in many mechanical systems, from the suspension systems in vehicles to the hinges on doors. In particular, constant force linear springs are widely used in a variety of applications where a constant force is required over a long distance. In this article, we will explore the science behind the functionality of constant force linear springs....

 The seat belt’s principle is that when it is fastened
The seat belt’s principle is that when it is fastened

Time:2023-6-13

The seat belt's principle is that when it is fastened, it can be stretched at will. When braking in a hurry, however, the belt is tightened, and the belt reel is the key component that plays this role. Its function is to store the webbing and lock it out, making it the most complex mechanical part of the seat belt....

 Maximizing Efficiency with Optimization Design Services
Maximizing Efficiency with Optimization Design Services

Time:2023-5-10

In today's fast-paced business world, efficiency is key to success. One way to improve efficiency is through optimization design services. These services can help businesses streamline their processes, reduce waste, and increase productivity. In this article, we will explore the benefits of optimization design services and how they can help businesses maximize efficiency. Optimization design services involve analyzing and improving...

Product