Many customers have a headache when it comes to the operating noise of diesel generator sets. To deal with this problem, the key is to identify the source of the noise. Therefore, let’s follow Haixing Power to take a look at the common sources and classification of noise. The main noise sources of diesel generator sets are exhaust noise, intake noise, cooling fan noise, combustion noise, mechanical noise, electromagnetic noise of the generator, and vibration of the unit during operation. 1) Mechanical noise The mechanical noise of a diesel engine is caused by the impact and vibration of relatively moving parts caused by the gas pressure and the inertia of the machine parts. Mechanical noise mainly includes piston knocking noise, gear mechanism noise, valve train noise, bearing noise, high-pressure oil pump noise, body vibration and noise caused by unbalanced inertial force, etc. The mechanical noise of diesel engines increases rapidly with the increase of rotation speed. When operating at low speed, mechanical noise is not important compared with other noises;

When purchasing generator sets, many customers encounter the problem of identifying whether the equipment is new or old. This is also where people are easily deceived. So here Haixing Dynamics has compiled some identification techniques. You may wish to take a look together. According to the experience of some technicians and veteran operators, to identify the newness of an old diesel engine, we can adopt the method of first question, second look, and third test, with the test as the main method. First question: It is to ask about the purchase time, purpose and reason of sale of the diesel engine, the repair status and the main parts that have been replaced, and any problems during use, etc., in order to have a more comprehensive understanding of the engine. The second inspection is to first check whether the model is obsolete, and then look at the appearance of the diesel engine to see if it is new or old, and check whether the parts are complete and whether they are damaged. Third test: It is a test run. The specific method for debugging the diesel generator set is 1. Rotate the crankshaft to allow the fuel injection pump to supply fuel.

As a professional diesel generator set manufacturer, Haixing Power has a say in the purchase of diesel generator sets. There is a big difference in the purchase of emergency diesel generator sets and common generator sets. Let the staff explain in detail the basis for purchasing diesel generator sets. Selection of emergency diesel generators Emergency diesel generators are mainly used in important places. In the event of an instant power outage after an emergency or accident, the emergency generator set can quickly restore and extend the power supply for a period of time. This type of electrical load is called a primary load. Equipment, instruments and computer systems that have strict requirements on power outage time should be equipped with batteries or UPS in addition to generators. The operation of emergency diesel generators has two characteristics: the first characteristic is for emergency use, the continuous working time is not long, and generally only needs to continue running for a few hours (≤12H); the second characteristic is for backup

Regarding the basic knowledge of diesel generator sets, many users are not very clear. Haixing Power mainly answers the doubts frequently reported by customers. We hope it can be helpful to users, and everyone is welcome to come and communicate. copyright by: www.hxdlkj.com 1. What systems are included in the basic equipment of diesel generator sets? Answer: Diesel generator sets mainly include six major systems, namely: (1) oil lubrication system; (2) fuel system; (3) control Protection system; (4) Cooling and heat dissipation system; (5) Exhaust system; (6) Starting system. 2. What is the relationship between the apparent power, active power, rated power, maximum power and economic power of a diesel generator set? Answer: 1. The unit of apparent power is KVA, which is used in my country to express transformers and UPS (UPS stands for Uninterruptiable Power in English)

When the diesel generator set has oil leakage, water leakage, or air leakage, it will cause the diesel generator to increase fuel consumption, accelerate parts wear, reduce power, and other failures. The following are the treatment methods when oil leakage, water leakage, and air leakage occur in diesel generator sets: 1) Add pad to cure leakage. If there is oil leakage at the anti-leakage gasket of the diesel engine oil pipe joint, you can add a layer of double-sided smoothness on both sides of the anti-leakage gasket. The thin plastic pad can be tightened firmly to prevent leakage. 2) Leakage treatment method with paint chip liquid. If there is leakage at the joints of diesel engine oil tanks, water tanks, crankcases, etc., you can soak the paint chips in alcohol and then apply paint chip liquid to the cleaned joints to cure the leakage. . However, paint chips are expensive and are generally used only in emergencies. 3) Use oil to cure leakage of paper gaskets in the oil pan, cylinder head, gear chamber cover, crankcase rear cover, etc. of the diesel engine.

The correct installation of the generator set is the prerequisite for its efficient operation. Standard installation contains a lot of content. You may wish to take a look at the complete installation specifications of diesel generator sets compiled by the staff of Haixing Power, which is of great reference value. 1. Preparation work before unit installation: ⑴ When transporting the unit, attention should be paid to tying the lifting rope in the appropriate position and lifting it gently. After the unit is transported to the destination, it should be stored in a warehouse as much as possible. If there is no warehouse and it needs to be stored in the open air, the fuel tank should be elevated to prevent it from being soaked by rain. The tank should be covered with a rainproof tent to prevent it from being exposed to the sun and rain. Damage equipment. Due to the large size and heavy weight of the unit, the transport route should be arranged before installation, and a transport port should be reserved in the machine room. If the doors and windows are not large enough, you can use the location of the doors and windows to reserve a larger port. After the standby unit moves in, you can then build the wall and install the doors and windows. ⑵ Before unpacking, you should first remove dust and check whether the box is damaged or not.

In order to extend the service life of the diesel generator set and its efficiency, in addition to seasonal maintenance, the daily maintenance of the diesel generator set cannot be ignored. Only by starting from the details can we make good use of the diesel generator set. Let’s follow Haixing Power to take a look at the daily maintenance and emergency starting procedures of diesel generator sets. copyright by: www.hxdlkj.com 1. Daily inspection and maintenance of emergency generator sets 1. Conduct a no-load start-up test of the emergency generator on the third Monday of every month. 2. Inspect and record the generator room and machine body every week. 3. The unit should be started and run for no less than 20 minutes each time to ensure lubrication of the moving parts of the unit. 4. Check the tightness of the box line, neutral line and grounding line of the generator set. 5. Routine inspection contents 1) Check the amount of oil in the fuel tank. 2) Check the engine oil level of the diesel engine. 3

Generator sets generally use synchronous generators (also commonly known as electric balls) to convert the rotating mechanical energy of the diesel engine into electrical energy. Various electrical equipment must rely on the power generated by it to work, so the working performance requirements of the synchronous generator are very high. . The working principle of synchronous generatorcopyright by:www.hxdlkj.com Synchronous generator is manufactured based on the principle of electromagnetic induction. Modern alternators are usually composed of two parts of coils; in order to increase the strength of the magnetic field, part of the coil is wound in a groove on the inner wall of a cylinder made of metal sheets with good magnetic conductivity. This cylinder is fixed on the base and is called stator. The coil in the stator can output induced electromotive force and induced current, so it is also called an armature. The other part of the coil of the generator is wound in the groove of a cylinder made of metal sheets with strong magnetic permeability in the stator cylinder, which is called the rotor. An axis passes through

Every day, many users and friends come to consult about diesel generator set failures. In order to let everyone know the causes and treatment methods of common failures simply and clearly, the staff of Haixing Power have sorted it out and shared it with everyone. We hope it will be useful to everyone. . Introduction to common faults: 1. When the generator load is too low, why does the exhaust pipe sometimes drip oil? Since there are many places in the engine that use pressure seals, such as between the cylinder liner - piston - piston ring, and between the supercharger and the supercharger rotor shaft, this kind of seal is generally fully exerted when the engine is under about 1/3 of the load. function, and slight leakage may occur when the load is small. Therefore, foreign engine manufacturers generally emphasize this in their manuals. If the unit is operated under a small load, as the running time continues, the following faults will occur: ①. The piston-cylinder liner seal is not good, and the oil will escape and enter the combustion chamber.

Engine cylinder pull refers to the occurrence of obvious longitudinal mechanical scratches and scratches on the inner wall of the cylinder within the movement range of the piston ring. In severe cases, melting wear occurs, causing the engine to have difficulty starting or stalling on its own. Cylinder pull is a major accident to the engine. According to the experience summary of Haixing Power technicians: the fundamental reason for the cylinder pull of the generator set is that it is difficult to form an oil film between the inner wall of the cylinder and the piston ring and piston, resulting in poor lubrication and even dry friction. There are many specific reasons for this situation, which can be summed up in three aspects: Piston group reasons 1. The piston ring gap is too small. If the opening clearance, side clearance or back clearance of the piston ring is too small, the piston ring will expand due to heat and become stuck when the engine is running, and it will be pressed tightly against the cylinder wall, or the piston ring will break and it will be easy to pull out grooves on the cylinder wall. 2. The piston pin comes out.