У дома > Блог > Анализ на причините за повреда на въглеродните четки на генераторния комплект

Анализ на причините за повреда на въглеродните четки на генераторния комплект

източник:Qianye Precision време: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 !

Последни новини

 Carbon Brush Spring: Benefits and Applications
Carbon Brush Spring: Benefits and Applications

Time:2023-4-23

Carbon brushes are an integral part of many electrical machines. They are used in motors, generators, and other electrical devices as a way to transfer electrical current between stationary and moving parts. Carbon brush springs are an essential component of carbon brushes. They ensure that the carbon brush maintains contact with the commutator or slip ring during operation, which is...

 Приложение на пружина с променлива сила в електрическа ролетна щора
Приложение на пружина с променлива сила в електрическа ролетна щора

Час: 2022-9-14

Електрическата ролетна щора има много предимства, като красив и семпъл външен вид, здрава и издръжлива структура и др. Ролетната щора е подходяща за различни места, като бизнес офис сгради, хотели, ресторанти, офиси и домове (използвани като марля завеса), особено за окачени фасади с голяма площ. Когато тъканта на ролетните щори се постави, тя може да омекоти...

 China constant force spring factory
China constant force spring factory

Time:2023-4-4

A constant force spring, also known as a clock spring or power spring, is a mechanical spring that exerts a nearly constant force over its range of motion. It is typically made from a flat strip of spring steel wound tightly around a shaft or arbor, which allows it to store and release energy as it is wound and unwound....

 Overview of Coil Springs for Cars and Their Importance in Vehicle Suspension
Overview of Coil Springs for Cars and Their Importance in Vehicle Suspension

Time:2023-6-30

Introduction: Coil springs are an integral part of a car's suspension system. They play a crucial role in providing comfort, stability, and control to the vehicle. This article will provide an overview of coil springs for cars and highlight their importance in the suspension system. What are Coil Springs? Coil springs, also known as helical springs, are mechanical devices made...

 Precision High Cycle Torsion Springs: An Overview of Their Applications and Benefits
Precision High Cycle Torsion Springs: An Overview of Their Applications and Benefits

Time:2023-8-13

Introduction: Torsion springs are a type of mechanical spring that operates by exerting torque or rotational force. They are designed to return to their original position when twisted or rotated. High cycle torsion springs are an advanced version of torsion springs that can withstand a significantly higher number of cycles before experiencing fatigue failure. In this article, we will explore...

 Discover the secrets of torsion spring energy
Discover the secrets of torsion spring energy

Time:2024-3-19

Speaking of torsion springs, you may feel unfamiliar, but they are everywhere in life! This small mechanical component has a lot of energy. Want to know how it works and where the energy comes from? Come with me to unveil its mystery! Torsion spring, what is it? A torsion spring, simply put, is a spring that can "twist". If you...

Product
 Услуга за оптимизиране на дизайна
Услуга за оптимизиране на дизайна
От идеи за продукти, дизайн до производство на завършен продукт, ние можем да помогнем на клиентите да ги завършат и да помогнем на клиентите да оптимизират своите продукти от професионална гледна точка на използване на пружини, ускоряване...
 Услуги по сглобяване и монтаж
Услуги по сглобяване и монтаж
Компанията Qianye не само осигурява производството на прецизни пружини, но също така се фокусира върху структурния дизайн и функционалните решения на цялата пружинна система и може да осигури цялостна...
 Силова пружина
Силова пружина
Характеристика: Силовата пружина е навита от стоманена лента. За ограничаване на външния му диаметър е необходима пружинна кутия. Центърът на пружината е свързан с вала. Кога...
 Постоянна торсионна пружина
Постоянна торсионна пружина
Характеристика: Фиксираната (постоянна) въртяща пружина (пружина) е изработена от неръждаема стомана. Външната сила връща главната пружина от нейното естествено състояние към изходното колело (съхранение на енергия). Когато...
 Пружина с постоянна сила
Пружина с постоянна сила
Характеристика: Пружините с постоянна сила (постоянна сила) се навиват от ленти от неръждаема стомана. Стоманените ленти с висока якост се оформят от специфично производствено пружинно оборудване. Когато външната сила ги изправи,...
 Пружина с променлива сила
Пружина с променлива сила
Характеристика: Външният вид на пружината с променлива сила и пружината с променлива усукване е много подобен на пружината с постоянна сила и пружината с постоянно усукване. Пружините с променлива сила и пружините с променлива усукване могат...