Diesel generators consume a lot of oxygen when operating and produce water, carbon dioxide, carbon monoxide (when combustion is incomplete), nitrogen oxides, etc., they must therefore be placed outdoors or in a well-ventilated area.
The situation you describe is very similar to carbon monoxide poisoning. Fortunately, you were alerted early, otherwise the consequences would be difficult to predict.
What is the function of carbon brushes on the generator?
1. Add external current (excitation current) to the rotating rotor (input current) through the carbon brush
2. Add the electrostatic charge on the large shaft. the earth (grounding carbon brush) (output current) through the carbon brush;
3. Bring the large shaft (ground) to the protective device for rotor grounding protection and measure the positive voltagesand negative from the rotor to ground;
4. Change the direction of current (in commutator motors, brushes also play a switching role).
Replacement precautions
Two people are strictly prohibited from working at the same time; clothing and wrists should be buttoned when working to avoid being pinched by rotating parts; the insulating mat when working is strictly prohibited from touching two poles or a pole on the ground at the same time; the same unit should use the same type of carbon brush if the source is difficult, different types of carbon brushes can be used; used (the same quality is always guaranteed as being of the same type), but the agreement of the leader must be obtained beforehand; the upper part of the carbon brush is lower than the brush. The handle or handle of the broom should be replaced immediately.
The generator voltage has nothing to do with the brushescoal.
Detailed information
Classification of carbon brushes
1 According to the softness and hardness of the material, it can be divided into . Soft brushes and medium hard brushes. Quality brushes and hard brushes.
2. According to the usage objects of brushes, they can be divided into turbogenerator brushes, steel rolling motor brushes, traction motor brushes, automobile and tractor brushes and power tool brushes. Electricity of aircraft engines, etc.
3. According to the color of the brush, it is divided into black brushes (made of pure carbon graphite) and colored brushes (made of copper and other metal materials and graphite).
4. According to different brush materials, they can be divided into: graphite brushes; graphite metal brushes;
Baidu Encyclopedia-Carbon brush
Baidu Encyclopedia-Electric brush
The function of the brushcoal is a motor, generator or other Rotating machines Transfer energy or signals between the stationary part and the rotating part.
It mainly conducts electricity while rubbing against metal. This is not the same as when metal rubs against metal and conducts electricity, the friction force can increase, and at the same time. over time, the intersection may sinter together; carbon brushes will not, because carbon and metal are two different elements. Most of its uses are in electric motors and its shapes are diverse, including square, round, etc.
Carbon brushes are suitable for various motors, generators and axle machines. It has good switching performance and long service life. Carbon brushes are used on the commutator or slip ring of the motor. As a sliding contact body to export current, they have de good electrical conductivity, thermal conductivity and lubrication properties, and have a certain mechanical strength and commutative spark instinct.
Almost all motors use carbon brushes, which are an important component of the motor. It is widely used in various AC and DC generators, synchronous motors, battery DC motors, slip rings of crane motors, various types of welding machines, etc. With the development of science and technology, the types of engines and working conditions used are becoming more and more diversified.
Detailed information
Carbon brush inspection:
1. Intuitively, the broom should be properly chamfered and have appropriate specifications. , The structural specifications, cross section and length of the conductors meet the requirements, and there is no loosening, falling, damage.t, dropped edges, dropped corners, clamps, etc.
2. From the use point of view, the main signs of good performance of the brush are as follows:
(1) Long service life and no wear of the commutator or ring current collector.
(2) It has good switching and current collection performance, suppressing sparking within the allowed range and reducing energy loss.
(3) When the brush is running, it will not overheat, make much noise, or be damaged.
(4) During operation, a uniform, moderate and stable oxide film can quickly form on the surface of the collector or collector ring.
3. Test brushes using instruments. From a technical point of view, electric brushes must comply with national ministerial standards. The instrument can be used to test the performance of the brush according to the requirements of the “Ta"beautiful technical performance of the brush". Such as brush resistivity, Rockwell hardness, volume density, current density, contact voltage drop, coefficient of friction, 50 hours of wear, allowable peripheral speed, unit pressure and even content metal, etc.