What Haixing Power would like to discuss with you is how to identify the quality of diesel generator sets. According to the summary of Haixing staff, we can mainly distinguish between main power and backup power from the following aspects. Domestic and foreign power labels are different. Different, many unscrupulous manufacturers will use this to deceive customers, so everyone needs to pay attention. In China, main power is generally used to identify diesel generator sets, while internationally, standby power, also known as maximum power, is used to identify diesel generator sets. Diesel generator sets are rated in China by main power, that is, continuous power. The maximum power that the generator set can use continuously within 24 hours is called continuous power, and there is 1 hour in every 12 hours that it can be used continuously. If the unit is overloaded by 10% based on the power, the unit power at this time is the maximum power, that is, the standby power. For example: If the master studies

Generator oil plays a role in lubrication, preventing depreciation and damage caused by friction of parts in use, and increasing maintenance costs. Therefore, we must replenish the oil in time after it is consumed. Many people wonder how often is the appropriate time to replace the oil? Under normal circumstances, a new engine should be operated for 50 hours after the first operation and 50 hours after intermediate repair or overhaul. The oil replacement cycle is generally carried out at the same time as the oil filter (filter element). The general oil replacement cycle is 250 hours or one month. Using Category 2 engine oil, the engine oil can be extended to work for 400 hours before changing it once, but the oil filter (filter element) must be replaced. If you want to accurately determine the replacement time of the diesel generator set, there are the following determination methods: 1. Use two glass test tubes with a diameter of 0.5 cm and a length of 20 cm, and fill them with 19 cm of new engine oil and used engine oil respectively. , after sealing, both tubes are inverted at the same time, and the bubbles are recorded.

During the operation of the generator set, the parts will heat up due to the friction of the parts. At this time, we need to use cooling water. Cooling water cannot be used with any water quality. Here Haixing will introduce to you how to use cooling water. choose. The cooling water used to directly cool the diesel engine in the cooling system should use clean fresh water, such as rainwater, snow water, tap water with good quality or clarified river water, etc. If well water or other groundwater is used directly, it contains more minerals. Substances can easily form scale in the water cavity of a diesel engine, affecting the cooling effect and causing malfunctions. If the conditions are limited and only hard water is available, it must be softened before use. Commonly used cooling water softening methods include the following two methods: ① Boiling method - boiling water to precipitate. ② Add o. to every liter of water. 67s caustic soda (caustic soda), stir and precipitate, then use the upper layer of water. We would like to remind you that seawater is never allowed to be used to directly cool diesel engines.

There are clear regulations on the water temperature of diesel generator sets, but many people do not follow the regulations in actual operation, causing the water temperature to be too high or too low, which will have a great negative impact on the life of the unit. Generally speaking, as long as the water temperature does not exceed 95°C, cavitation will not occur and the cooling water (liquid) will not be interrupted. On the contrary, if the water temperature is too low, it will be extremely harmful to the operation of the diesel engine. First, the temperature is low, the diesel combustion conditions in the cylinder deteriorate, the fuel atomization is poor, the after-ignition combustion period is extended, the engine is prone to rough operation, and the damage to crankshaft bearings, piston rings and other components is aggravated, the power is reduced, and the economy is reduced. Second, the water vapor after combustion is easy to condense on the cylinder wall, causing metal corrosion. Third, the burning diesel may dilute the engine oil and worsen the lubrication condition. The fourth is that the fuel is incompletely burned and forms colloid, causing the piston ring to get stuck in the piston ring groove, the valve to get stuck, and the pressure in the cylinder to decrease when compression ends. Fifth, the water temperature is too low, the engine oil temperature is also low, and the engine oil becomes thicker

There are many netizens like Haixing Power asking about oil leakage in generator sets. This is a common fault during our use. Haixing's technical staff have summarized many cases and listed the following reasons. You may wish to make a first Self-check and check to see if the following problems have occurred. First, check whether the engine oil model, oil quantity, and oil quality meet the requirements. The second is whether the joint surfaces of various parts of the diesel engine are smooth and flat, and whether the processing dimensions meet the requirements. Sanding parts and die-casting parts must be free of blisters and air holes, and whether various paper pads, seal strings, oil seals, and screws meet the requirements and are fastened. The third is whether the lubrication of the diesel engine is smooth and meets the requirements (the oil return hole of the follower column of the air-cooled diesel engine is very important. Fourth, for the diesel engine without negative pressure, it is also necessary to check whether the breathing is smooth and meets the requirements, and whether the air in the cylinder flows into the crankshaft. Causes oil spray and leakage. Fifth, the machine temperature must not be too high, cooling, and dissipation.

When we use the generator set, a fault occurs and the power is insufficient, mainly through the measurement of the ammeter or the observation of the control panel. What are the reasons for the insufficient power? Haixing has summarized the following points for you: Insufficient output power of the generator is generally a power failure. Generally speaking, this situation will not occur in the generator part. Common generator faults are: no voltage, high voltage, and bottom voltage. .Voltage establishment fails when a certain amount of load is applied. The following reasons may cause insufficient power of the diesel generator set: 1. Insufficient oil intake of the diesel engine, 2. Blockage of the diesel filter element, 3. Loose closing of the diesel engine valve, 4. Poor atomization of the diesel engine injector, 5. Diesel engine fuel injection pump failure, 6. Diesel engine Piston rings and cylinder liners are worn.

Some friends found that oil leakage at the joint surface would occur to varying degrees during use of the generator set. Haixing has done research on this part of the problem and believes that the main reasons are as follows: 1. The quality of purchased or homemade paper pads does not meet the requirements, such as insufficient thickness, improper storage, wrinkles and deformation, or carelessness during assembly, stains, etc. Dust and impurities are all causes of oil leakage. 2. The oil pressure is too high, which also causes oil leakage at the static joint surface. 3. The quality of the static joint surface itself is mainly determined by the accuracy of the processing equipment itself and the storage and transportation conditions. If the equipment has high precision, the flatness and roughness of the static joint surface can meet the drawing design requirements, and care is taken to prevent collisions during storage and transportation, it will not be difficult to achieve complete sealing of the static joint surface. However, due to the low level of equipment accuracy and workmanship of some manufacturers, the storage and transportation conditions and management level cannot completely guarantee that there will be no bumps and scratches. 4. Poor operating skills during maintenance. At present, diesel generator sets are generally

Customers will have many 'whys' when using the generator set. Today, Haixing has prepared some difficult questions about the unit. They will be explained in detail below. More difficult questions will be released on Haixing's official website. Welcome your attention. 1. What are the conditions for using two generator sets in parallel? What device is used to complete the parallel work? Answer: The condition for parallel use is that the instantaneous voltage, frequency and phase of the two machines are the same. Commonly known as 'three simultaneous', a special parallel device is used to complete the parallel work. It is generally recommended to use fully automatic paralleling cabinets and try not to use manual paralleling, because the success or failure of manual paralleling depends on human experience. The reliable success rate of manual paralleling of diesel generators is equal to 0. 2. The power factor of a three-phase generator is How many? Can a power compensator be added to improve the power factor? Answer: The power factor is 0.8. No, because the charging and discharging of the capacitor will cause small power fluctuations. and unit vibration

There are many brands of generator sets on the market. Regardless of whether they use naturally aspirated or supercharged generators, manufacturers emphasize that low-load/no-load operating time should be minimized and stipulate that the minimum load cannot be less than 25%-30% of the rated power of the unit. %. Haixing will tell you the principle below.

Some friends do not choose the right equipment when selecting the generator set, small defects in the operation process, or insufficient daily maintenance will cause safety hazards to the generator set. Today Haixing is going to tell you about some causes of generator set fires. (1) Overload Overload will occur if the generator set is overloaded, the voltage is too low, and the three-phase asynchronous generator set has excessive iron loss. (2) Short circuit The short circuit of the generator set is divided into turn-to-turn short circuit, phase-to-phase short circuit and short circuit to ground. (3) Poor contact. If the various contacts of the connecting coil or the lead wire contacts are loose, the contact resistance will increase. (4) Improper selection of generator sets with different forms of protection must be used in different places, otherwise fires may occur. (5) Single-phase operation If the three-phase asynchronous generator set continues to operate when one phase is not energized, single-phase current will flow through the other two phases. This state is called single-phase operation. (6) Mechanical friction generator