Causes of diesel generator set electricity

Diesel generator setsThe brush may have a sparkling phenomenon in the long run. Some users who have not encountered this situation found that the unit electric brush is not awkward.
1, the bearing vibration is large. Because the bearing is more equipment, the vibration is naturally difficult to control to the most ZUI low. The complex factors of the unit long time, fatigue, aging, etc. cause the bearing vibration to increase, the brush will make the brush column imputation, lead and spring, and the local sputum will slowly further affect the overall situation.
2, the surface of the brush is not clean. This is the most ignorant, and the normal running unit is sealed in a closed cabinet. There is a sleeve in the middle of the two-pole electric brush, and the rotor rotates the graphite toner, brush. Feat is taken in time to achieve the role of cleaning cooling. If the door is not strict, or forget the door when the inspection, the dust is accompanied by hot air suction brush, attached to the brush, on the one hand, affects the heat of the electric brush. On the other hand, when the brush is spark, the surface of the brush is not very insufficient, and the brush post is not very easy to surprise. In addition, there is a spiral channel groove on the pulley, which is to increase the heat-dissipating heat area, improve the contact with the wire, so that the brush is more sufficiently cooled, and it is more likely to make toner to take away. If the door is not strict, the dust in the wind is not enough. The dust is also very easy to attach in the spiral groove, and consequences can be imagined.
3, the brush pressure is uneven or does not meet the requirements. When the electric brush is shipped, the manufacturer has relevant regulations: the brush pressure is adjusted to ZUI low pressure without spark, and the scientific argumentation and practical summary, ZUI low pressure is generally 200 ~ 300: 0.03MPa, requires each The pressure between the brushes is also uniform, and the difference is no more than 10. The generator is in a long time, if a brush is too short, or the brush is in the case of a cassette card in the brush box, the pressure will appear uneven. In addition, the mechanical and spring itself is affected by the factors such as heat such as heat such as the impact of the pressure that does not reach the brush without spark. There is also when it is pressing, pulling the carbon brush, sometimes relying on feeling, no experience accumulation, the operation error is very large.
4, the brush current density is too large. In the actual operation, if one or two brushes are causing the mechanical reasons, the spring pressure is insufficient, etc., in order to maintain the normal load, the current through other brushes will increase, and if there is a brush of the increasing flow The brush being matched, due to the decrease in contact with the slip ring contact area, the contact surface is increasing. According to Q = i * IRT, the heat generation is proportional to the calorie, and the heat accumulated cannot be exuded, and the temperature is rapidly increased, and the brush and slip ring will generate sparks. After the production of sparks, the brush work environment is more bad, thereby vicious circle, making the electric brush sparks more serious, and there are several cases of wheezing.