Diesel Generator Tech

How to deal with vibration reduction, noise reduction, and cooling of diesel generator sets? The noise of diesel generator sets mainly includes engine exhaust noise, intake noise, combustion noise, mechanical noise of moving parts of the generator during operation, and generator noise. So, how to deal with vibration reduction, noise reduction, and cooling of diesel generator sets? Firstly, for vibration reduction treatment, to reduce the noise caused by diesel generator set vibration, we choose shear type rubber isolation pads placed between the engine body and the concrete base, To eliminate the rigid connection between the   diesel generator set   and the foundation, thereby reducing the low-frequency noise generated by mechanical vibration of the equipment, the exhaust pipes are wrapped with asbestos. For noise reduction treatment, noise reduction measures are taken for the inlet and outlet of the diesel generator set, with 50mm thick rock wool pasted inside and fixed with ...

Regarding the phenomenon of the Volvo diesel generator battery not being charged and the solutions, first we need to check whether the connection of the charging circuit is reliable, check whether the connection and plug are in good contact, and carefully check whether the socket and plug have "ignition" or arc burning phenomenon, wireless circuit damage or wire breakage. Secondly, check if the  Volvo diesel generator  charger is damaged and if the charging parameters meet the requirements: the initial charging current reaches 1.6-2.5A per unit. The maximum charging voltage reaches 14.8-14.9V/unit, the floating charging conversion current reaches 0.3-0.4A/unit, and the floating charging voltage reaches 14.0-14.4V/unit. Check if there is any drying phenomenon inside the battery, that is, if the battery is severely out of liquid. The electrode plate should also be checked for irreversible sulfation. The irreversible sulfation of the electrode plate can be determined by meas...

The lubrication method for variable pitch reducers of generator sets is generally immersion lubrication and grease lubrication. After every 6 months of operation of the generator set, the oil quality should be checked as follows: observe the presence of water and emulsion in the oil; Check the viscosity of the oil, and if the difference exceeds 20% or decreases by 15% compared to the original, it indicates that the oil is ineffective; Check the insoluble content, which should not exceed 0.2%, and conduct an anti emulsification ability test to discover whether the oil has deteriorated; Check if the additive composition has decreased. If there are any problems, the oil should be changed or filtered. When changing the oil, the oil is discharged from the oil drain hole and then injected into the oil injection hole. When installing the plug, thread sealant should be applied to the thread. The lubrication system should be kept clean, and measures should be taken to prevent dust, moisture, an...

  During the use of the generator set, various faults occur due to its own factors or objective external conditions. In order for users to master the maintenance technology of the generator set, the generator manufacturer shares the maintenance technology of the cylinder head fault of the generator set that has been maintained for many years, hoping to give users some help in the maintenance of the cylinder head of the   diesel generator set . Some important maintenance methods for repairing generator cylinder head faults are summarized as follows: 1. If the generator set sleeps until it breaks through and leaks due to water shortage and high temperature, it is likely to cause cracks in the cylinder head valve seat ring, and the copper sleeve rubber ring of the fuel injector melts at high temperature. The cylinder head that produces the cracks should be scrapped and disposed of. 2. The copper sleeve and rubber ring of the fuel injector may be damaged after prolonged operation....

Once a diesel generator fails, it must be repaired before it can be put into production again. Careful working attitude and accurate fault analysis are necessary conditions for successful maintenance of diesel generator. However, in our daily maintenance work, some irregular work habits often lead to the failure of maintenance work. Here, Dingbo Power Generation Equipment lists some illegal working habits in the maintenance of diesel generator for our technicians to learn from. The specific content is shared as follows: 1. Unqualified cleaning of  generator parts During the maintenance of diesel generator, the correct removal of oil stains and impurities on the surface of parts is of great significance to improve the repair quality and extend the service life of machinery. If the sundries in the bolt hole and the sand in the hydraulic element are not completely removed, the bolt torque is insufficient, the piston ring is easy to break, t...

What are the benefits of performing air filter cleaning on diesel generator sets? Diesel generator sets are commonly used power supply equipment in daily life or production, and how to maintain the machine has become an important aspect. Many experienced technicians pay special attention to the cleaning of the air filter for diesel generator sets, and they often carry out such operations, which makes some unfamiliar people quite puzzled. Why do we need to clean the air filter of the diesel generator set? Below, the   diesel generator set manufacturer   will analyze it for everyone. In fact, the principle of air filter cleaning for diesel generator sets is very simple. For humans, we also need to frequently go to places with good air to absorb fresh air, which can achieve good comfort and improve our own lives. The same applies to some machinery and equipment. Many substances in the environment also pose significant hazards to the diesel generator set itself, requiring regular ...

The main purpose of minor repairs to Cummins diesel generators is to eliminate common faults that occur during use, and to maintain good working conditions by replacing or repairing individual parts. This minor repair method mainly includes temporary malfunctions that occur during work, potential faults discovered during maintenance, and the replacement of individual severely worn parts. The basic content of minor repairs for  Cummins diesel generators : Check and eliminate the three leakage phenomenon of the Cummins diesel generator, and tighten the external components of the Cummins diesel generator according to the specified torque. Check the various technical parameters of the fuel injection pump and injector. If they are incorrect, adjust them according to the specified data. Adjust the valve clearance according to technical requirements. When replacing the piston ring, the carbon deposits in the cylinder head, upper part of the cylinder sleeve, and piston ring groove should b...

How to regularly check the wear of the keyways and fixing bolts related to diesel generator sets, using standard high-pressure oil pipes. During the fuel supply process of the fuel injection pump, due to the compressibility of diesel and the elasticity of the high-pressure fuel pipe, high-pressure diesel will form pressure fluctuations inside the pipe. The transmission of pressure waves inside the pipe requires a certain amount of time. To ensure consistent fuel supply interval angle, uniform fuel supply, and stable operation of the   diesel generator set , the length and diameter of the high-pressure fuel pipe are selected through calculation. Therefore, when the high-pressure oil pipe of a certain cylinder is damaged, a standard length and pipe diameter oil pipe should be replaced. In practical use, due to the lack of standard oil pipes and the use of other oil pipes instead, regardless of whether the length and diameter of the oil pipes are the same, there is a significant diffe...

  If there is return oil in the return pipe of a hydraulic diesel generator, what to do? Loosen the bleed screw on the fuel injection pump and fuel filter, pump the oil by hand until there are no bubbles in the spilled fuel, and then tighten the bleed screw. Pump oil again. When there is return oil in the return pipe, tighten the hand pump again. Loosen the nut of the high-pressure fuel pipe at one end of the fuel injector, pry up the plunger spring seat of the fuel injection pump, tighten the nut when there are no bubbles in the fuel injected from the nozzle, and then pry again several times. This is done cylinder by cylinder, and the   generator set   fills each fuel injector with fuel. At the same time, check whether the oil inlet pipe is leaking and whether the filter screen on the oil inlet pipe joint is blocked. If there is still no oil supply after troubleshooting, the oil inlet pipe and fuel pump should be checked. Remove the fuel injector, connect it to the high-...

What are the three common startup methods for diesel generator sets in parallel automatic mode? In the automatic mode of diesel generator set parallel operation, there are three common starting methods: starting according to demand, starting all, and balancing the engine running time. Below, we will elaborate on them. Firstly, it is necessary to start the machine according to the demand. In the automatic mode of  diesel generator set  parallel operation, when the switch input port remotely starts and the load is effective, the module with the highest priority will start the machine first. When the load is greater than the maximum percentage set by the module for starting, the module with the second priority will start the machine, synchronize the parallel operation, and evenly distribute the load. When the load is less than the minimum percentage of shutdown set by the module, the sub priority module will shut down for heat dissipation after the shutdown delay is completed. Wh...

  As a reactive power compensation device for improving power quality, it has been used to effectively suppress voltage fluctuations and flicker, reduce harmonics and distortion, eliminate three-phase imbalance, make the amplitude and waveform of voltage meet requirements, and improve power factor. Static VAR compensator (SVC) is a relatively advanced and practical reactive power compensation device, which has been widely used in the power system. Static var generator (SVG) is the latest type of reactive power compensation device, which can dynamically follow the load. The current of the reactor is controlled by a thyristor valve group. By adjusting the triggering phase angle of the thyristor, the effective value of the current flowing through the reactor can be changed, ensuring that the reactive power of the SVC at the grid connection point can precisely stabilize the voltage at that point within the specified range, playing a role in grid reactive power compensation. SVG is base...

Transformer is an important part of diesel generator, and also the part most prone to failure. The transformer tap changer fault is the most common fault of the transformer. The customer service personnel of Dingbo Power, the   diesel generator manufacturer , will introduce the causes of the transformer tap changer fault in detail. 1. On load tap changer: For transformers with on load tap changer, the oil tank of the tap changer is generally not connected to the transformer oil tank. If there is a serious shortage of oil in the tap changer oil tank, a short circuit fault will occur during the tap changer switching, causing the tap changer to burn out. Therefore, during operation, the oil levels of the two oil tanks should be monitored separately to ensure that they are normal; The malfunction of the tap changer mechanism includes: due to jamming, the tap changer stopped in the process position, causing the tap changer to burn out; The oil tank of the tap changer is not tightly...

With the increasing usage range and market demand of generator sets, the price of generators is also increasing. Can the investment in buying a generator set bring direct benefits to you. People have a common problem in their daily lives, what if the engine belt is loose? The generator belt noise in this situation is due to the operation of the generator belt driving many accessories, such as the generator, water pump, air conditioning compressor, steering pump, and so on. The   generator set   belt is a rubber product that grows over time, causing the belt to become loose in tension. This can cause the belt to "spin" and cause friction and noise with the accessories to be driven by the belt when the generator set is running. The heat generated by belt friction for a period of time will increase the viscosity of the rubber, so if it sounds for a while, it will not sound again. However, this situation must be promptly resolved. If the belt frequently rubs like this, it will ac...

The first is the dry start or the sudden addition of boiling water. If there is no cooling water after the diesel generator set starts, the temperature of the cylinder assembly, cylinder head, engine block and other parts will rise sharply. At this time, adding cooling water will cause the hot cylinder liner, cylinder head and other important parts to burst or deform due to sudden cooling. However, if you suddenly add about 100 ℃ boiling water to the cold engine block before starting, the cylinder head, engine block, cylinder liner and other parts will also crack, It should be added when the water temperature drops to 60-70 ℃. Secondly, increase the throttle to start the diesel generator set, and do not fill the fuel valve when starting the diesel generator set. Generally, it is enough to put the throttle on the idle position, but many people sharply increase the throttle before or during the startup in order to make the Diesel generator start quickly. The harm of this approach is: (1)...

The vibration of diesel generator may occur in use, so what is the cause? Below, we will briefly introduce Dingbo   Power Generation   Equipment to you. 1. Some imbalances in the transformation are mainly caused by the imbalance of the rotor, coupler, coupling, and transmission wheel (brake wheel). The solution is to first find the rotor balance. If there are large transmission wheels, brake wheels, couplers, and couplings, they should be separated from the rotor and balanced separately. Another is the transformation of some mechanical looseness. For example, if the iron core bracket is loose, the diagonal keys and pins become loose due to failure, and the rotor is not tightly tied, it will form a transformation and some imbalance. 2. Some mechanical problems mainly include the following points: (1) Some shafts in the linkage are misaligned, the centerline does not coincide, and the centering is incorrect. The primary reason for this type of problem is due to poor alignment an...