1. What are the conditions for two generator sets to be used in parallel? What device should be used to complete the parallel operation? Answer: The conditions for parallel use are that the instantaneous voltage, frequency and phase of the two generators are the same. The generator set is commonly known as 'three simultaneous' '. Use a special paralleling device to complete the paralleling work. It is generally recommended to use a fully automatic paralleling cabinet. Try not to use manual paralleling. Because the success or failure of manual paralleling depends on human experience. The author boldly speaks out with more than 20 years of experience in electric power work, The reliable success rate of manual paralleling of diesel generators is 0. The concept that a large mains power supply system can be manually paralleled must not be applied to a small power supply system, because the protection levels of the two are completely different. 2. What are the reasons for the high water temperature alarm to shut down and make it unusable? Answer: The water tank is leaking or the water volume is insufficient; the water temperature sensor is damaged; the dirt in the water channel of the water tank is too thick or the heat sink is too oily; the fan belt is too worn and the pressure is insufficient; the water pump is worn , the pump water volume is insufficient; saving

Correct maintenance is an important guarantee to ensure the normal and reliable operation of the diesel engine and extend the service life of the diesel engine. Technical maintenance is divided into the following four categories: 1. Routine technical maintenance. 2. Technical maintenance after 125 working hours. 3. Technical maintenance after 500 working hours. 4. Technical maintenance after 1,000 working hours. (1) Daily technical maintenance 1. Check whether each instrument is normal. 2. Check the oil pan and the oil level of the fuel injection pump. 3. Check the amount of oil in the fuel tank and check whether there is scale and water in the sedimentation cup. It needs to be disassembled and cleaned. 4. Remove dust adhering to the air filter element, inner cavity channels, etc. 5. Check for possible water leaks, oil leaks, and air leaks. 6. Check whether the connections everywhere in the diesel engine are firm. 7. Clean away the mud on the surface and keep the diesel engine, especially the electrical equipment, clean. If flushing with water, be careful not to allow water to enter the diesel engine through the gear cover vent, oil dipstick seat hole, and air intake pipe hole.

Cummins generator sets use Dongfeng Cummins B and C series engines, which have advanced technology and reliable performance. They are equipped with Wuxi New Era Stanford generators that recover quickly in voltage and frequency when subjected to instantaneous loading. Coupled with the uniquely designed built-in multi-level vibration reduction system, they can effectively It eliminates vibration when the unit is running and protects the control system and electrical components; it can also provide very reliable power in extremely harsh environments. Advantages of Cummins generator sets: 1. When several Cummins generator sets are paralleled, it is equivalent to one high-power generator set supplying power to the load. You can decide how many units to operate according to the size of the load (the generator set operates at 75% of the rated load) (lowest fuel consumption), thereby achieving the purpose of saving diesel and reducing the cost of the generator set. Especially now that diesel is in short supply and oil prices are rising rapidly, saving diesel has become very important. 2. Achieve uninterruptible power supply to ensure normal production of the factory and unit conversion

As we all know, the good overall performance of a diesel generator set cannot be separated from the effective cooperation of each component. Therefore, the daily safe use and maintenance of zero parts of the equipment is very important. Today, Haixing Generator is here to introduce to you the common sense of battery use and maintenance of diesel generator sets to ensure the normal operation of the equipment. Daily use of diesel generator battery: 1. When the battery of diesel generator has not been used for a long time, it must be properly charged before use to ensure the normal capacity of the battery. Because normal operation and charging will cause some water in the battery to evaporate, this requires us to often add an appropriate amount of distilled water or purified water to the battery, but do not overfill it (based on the battery plate scale), otherwise, When the battery is discharged or charged, the electrolyte inside the diesel engine will gush out from the overflow hole of the filling port, causing corrosion and damage to surrounding objects and the environment.

After the diesel generator set has been running for a period of time, abnormal valve noise will sometimes occur. At this time, you do not need to panic. Instead, you should stop the machine immediately for inspection, find out the source of the abnormal valve noise, and solve it in time to ensure the normal production of the enterprise. Below, Haixing makes a simple analysis of the causes of abnormal valve noise in diesel generator sets for reference. 1. Valve leakage noise The valve leakage noise occurs outside the valve chamber. It is more obvious at high load and low speed. The noise increases as the load increases. The main reason is that when reaming the valve seat, due to improper operation or excessive wear of the inner hole of the valve guide, the valve seat is skewed or the valve clearance is small, resulting in valve ablation, causing the valve to not close tightly and causing air leakage. Treatment method: Remove the cylinder head, grind the valve, check the elasticity of the valve spring, and readjust the valve clearance. 2. The valve knocking sound occurs when the engine is running at idle speed and occurs between the tail end of the valve stem and its driving part.

After a diesel generator set has been used for a period of time, the fuel injector may become stuck due to improper operation or maintenance. So, what are the reasons that cause the injector of a diesel generator set to get stuck, and how to solve the problem if it encounters it? Haixing is here to give you a brief introduction. 1. Reasons why the fuel injector of the diesel generator set is stuck 1. The diesel is not clean, and there are impurities in the high-pressure oil pipe. The excessive force wears the needle valve coupling of the injector, causing the needle valve coupling to not close tightly and causing high pressure in the combustion chamber. Gas backflows and burns out the needle valve assembly. In addition, the dirt on the injector pressure regulating spring, tappet and other parts is moved to the upper part of the injector needle valve through the injector tappet, or the cotton rope and lead wire used to prevent oil leakage on the oil line enter the injector through the high-pressure oil pipe. oiler, the needle valve assembly will become stuck. 2. The outlet valve is worn, causing oil dripping when the injector stops injecting fuel, causing the injector nozzle to burn coke and accumulate carbon, causing it to become stuck and other malfunctions.

After purchasing a Cummins diesel generator set, customers should pay attention to safe use and strictly abide by operating procedures to ensure the normal operation of the diesel generator set. So, what are the specific operating procedures for Cummins diesel generator sets? Haixing is here to introduce it to you. Preparations before starting the engine 1. Check whether the oil level in the crankcase of the diesel engine is normal, and check whether the cooling water tank is cooled (enough cooling water and oil should be added). 2. Open the diesel valve to clear the fuel pipeline. 3. Manually turn the machine to check whether the moving parts are stuck. 4. Whether the starting motor current meets the starting requirements. 5. Check whether the water pump, oil pump and fan conveyor belt are normal. 6. Start the diesel generator after confirming the above inspections. 2. Starting 1. Turn on the starting power switch and start. 2. Diesel generator starting

If you want to know the approximate operating costs before purchasing a diesel generator set, then it is necessary to calculate the fuel consumption. Many people do not know much about the fuel consumption and calculation of generator sets. Haixing Power will give you a detailed explanation below. Answer Generally speaking, the fuel consumption of diesel generators is related to the following two factors: 1. Fuel consumption rate. Diesel generator sets of different brands have different fuel consumption rates and different fuel consumption; 2. The size of the electrical load. If the load is large, the fuel consumption will be greater if the throttle is opened. On the contrary, if the load is small, the fuel consumption will be smaller. In order to facilitate everyone to understand the approximate fuel consumption of the generator set and calculate the usage cost of the generator set; this gives some rough reference values ​​(30kw-500kw). Fuel consumption of 30kw diesel generator set = 6.3 kilograms (kg) = 7.8 liters (L) Fuel consumption of 45kw diesel generator set = 9

How to perform the shutdown operation after the generator set is running? Is it enough to just cut off the power supply? In the following, Haixing will explain in detail the three operation processes of diesel generator set operation, normal shutdown, and emergency shutdown, so that everyone can learn from it. After the operating unit enters full speed operation and the generator voltage and frequency are normal and stable, the operator can close the generator air switch. When the unit is in operation, the operator should also frequently observe and understand whether the unit is operating normally, whether the instrument indication on the control panel is in the correct position, whether there is a pre-alarm indication on the control panel, the fuel level in the fuel tank and other operating parameters, and regularly check the operating parameters of the unit. Record. Normal shutdown Before normal shutdown of the unit, first separate the load, and then run the unit without load for a certain period of time to allow the unit to be fully cooled before shutting down. For some units equipped with a shutdown valve, if you want to turn off the key switch on the control panel, use the operation to stop the unit.

Many friends have discovered that there may be slight leakage inside the engine of the diesel generator set, which is the so-called oil dripping. What is the cause of the oil dripping phenomenon? What are the detailed fault locations? Haixing will give detailed answers to friends below. If the generator set is running under a small load, as the running time continues, the following faults will occur: 1. The piston-cylinder liner is not well sealed, the oil will flow up, enter the combustion chamber for combustion, and the exhaust will emit blue smoke. 2. For supercharged diesel engines, due to low load and no load, the boost pressure is low. It is easy to cause the sealing effect of the supercharger oil seal (non-contact type) to decrease, and the oil will escape into the supercharging chamber and enter the cylinder along with the intake air. 3. Part of the engine oil that flows up to the cylinder participates in combustion, part of the engine oil cannot be burned, and forms carbon deposits on the valves, intake passages, piston tops, piston rings, etc., and the remaining part is discharged with the exhaust. In this way, the cylinder liner exhaust passage will gradually