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

In the process of contacting customers, Haixing’s staff found that many customers are very vague about how to accurately order generator sets. Today, Haixing will teach you what to pay special attention to when ordering generator sets: Generally, the ordering of generator sets should be marked with the following Content: (1) Unit model, rated power, rated frequency, rated voltage, rated current, number of phases, power factor and wiring method, etc. (2) Requirements for unit automation functions and performance. (3) Requirements for the structure, performance and installation dimensions of diesel engines, generators and control panels. (4) Requirements for parallel operation of units: If multiple units are purchased at the same time, are they required to be operated in parallel? If parallel operation is required, whether the measuring instruments and devices required for parallel operation need to be provided. (5) Requirements for ancillary equipment of the unit: many manufacturers consider cooling

Many customers do not understand the phenomenon of carbon deposits in generator sets, and do not know how to deal with such a situation. Below, Haixing will explain in detail some common causes of carbon deposits in generator sets. Carbon deposits in generator sets are actually the product of incomplete combustion of diesel and oil that rushes into the combustion chamber. It is a common phenomenon to produce carbon deposits on the top of the diesel engine piston, on the walls of the combustion chamber and around the valves. A large amount of carbon deposits will have a certain impact on the performance of the diesel generator set, causing poor combustion, worsening heat transfer and reducing the reliability of the injector. Several common causes of carbon deposits are: 1. The fuel injector is not working properly, such as poor atomization, oil dripping, diesel generator injection pressure is too high or too low, injection time is too early or too late, and the amount of fuel injection is too much, which will cause incomplete combustion of part of the fuel. . 2． Serious oil leakage. 3. Serious air leakage. 4． Cooling water temperature is too low

Generator set torsional torque The torsional torque output from the flywheel of the generator set is called effective torque, referred to as torque, and its unit is Newton·meter (Nm) or kilogram force·meter (kgf.m). It refers to the heat generated by the combustion of fuel after it is mixed with air in the cylinder, causing the gas to expand and perform work to generate rotational torque, which overcomes the frictional resistance torque of each part and drives various auxiliary devices (such as fuel injection pumps, cooling water pumps, and lighting generators). The torque consumed by the crankshaft is finally transmitted to the flywheel through the crankshaft to provide the torque for use. The force required by the generator set to drive the diesel engine chassis and traction agricultural tools is transmitted to the flywheel and becomes a reaction torque that hinders the rotation of the flywheel, which is usually called the load of the diesel engine. In actual work, the torque transmitted from the flywheel of the generator set should be equal to the load of the diesel engine. The vibration isolation structure diesel generator set adopts a welded base structure, which is made of high-quality medium-thick steel plates and boiler steel plates that are cold-worked and tailor-welded.

According to news, French energy group EDF plans to test four tidal power generating units with a total capacity of 2MW installed near Brea Island on the 31st. EDF introduced that the total investment in the project is nearly 40 million euros, and the company will receive subsidies from the European Union and French environment and energy agency Ademe. The company OpenHydro is responsible for designing the turbine units, while French shipbuilding company DCNS is responsible for assembling the equipment. The turbine generator is a new type of generator that obtains electricity from ocean currents. The energy produced by the tidal turbines will be converted by a set of rectifiers and transported to the mainland via underwater cables. Preparations will be made for the implementation of the project. Local authorities will fully support this development and implementation. What is a tidal generator? Tidal power generation is to build a dam in a bay or a tidal estuary to form a reservoir, and place a hydroelectric generator set in or next to the dam to make use of the rise and fall of the seawater level when the tide rises and falls.

First of all, Haixing will introduce to you what cavitation is. Cavitation corrosion means that the surface of the outer wall of the diesel engine wet cylinder liner in contact with the coolant is destroyed into needle-shaped holes. These holes gradually expand and deepen, and finally form deep holes or cracks; the holes are generally clean and have no corrosion products. Haixing concluded that most people believe that cavitation is caused by high-frequency vibration of the cylinder liner. Mechanical vibration causes changes in coolant pressure, causing bubbles to be generated and burst in the coolant. This process is the cause of cavitation. Since there is gas dissolved in the coolant, when the high-frequency vibration of the cylinder reduces the local pressure of the coolant to a certain critical value, the gas dissolved in the coolant is separated in the form of bubbles, and these bubbles flow to the high-pressure area. Collapse occurs when the pressure exceeds the bubble pressure. The gas in the bubble state is re-liquefied or dissolved in the coolant, and the volume suddenly decreases. The coolant moves towards the center of the bubble at high speed, causing a water hammer phenomenon, resulting in

If the fuel injection pump of the generator set supplies too much fuel, it will increase fuel consumption and easily lead to incomplete combustion, causing wear of the cylinder, piston and piston rings, and even causing overheating and cylinder knocking of the diesel engine. To judge the fuel supply amount, you can open the side cover of the fuel injection pump for detailed inspection based on the smoke exhaust situation. Haixing summarizes the reasons for excessive fuel supply from the fuel injection pump based on past maintenance experience as follows: 1. Adjust the fuel injection pump plunger to obtain the fuel supply volume. It is too large, or the locking screw of the adjusting ring gear is loose and the adjusting gear is displaced, resulting in excessive fuel supply to the fuel injection pump. ②The adjustment screw in the builder that limits the maximum oil volume of the rack is adjusted too large or the throttle handle limit screw is adjusted too large. ③ Too much engine oil in the speed regulator will increase the oil supply and lead to 'speeding'. In addition, attention should also be paid to the unstable operation, power reduction, and exhaust gas of the diesel generator set caused by uneven oil supply that may occur during use.

Due to the approaching peak power consumption, the number of companies or individuals purchasing generator sets has generally increased recently. Not all users are skilled in the use of generators.Then, walking into the whole process of generator set operation will help novices use it correctly and safely.The entire operation process of the generator set consists of five parts: preparation before starting, starting, running, shutting down, and maintenance after shutting down. Each part is indispensable.Some users do not do enough preparation work or maintenance work, which can easily cause the unit service life to be shortened or the unit to malfunction. Therefore, Jiangsu Haixing Power needs to remind users to follow the steps and do every step as required, so as to It does not affect electricity consumption and ensures safe use.1. Preparations before starting the generator set 1. Check the lubricating oil level, coolant level, and fuel quantity 2. Check the pipelines and joints of the diesel engine's oil supply, lubrication, cooling and other systems for oil and water leakage 3 2. Check the electrical circuits for leaks such as broken skins etc.