Diesel generator fault diagnosis and elimination method
Diesel generator fault diagnosis and elimination method
Diagnosis and elimination method
Diesel engine main bearing failure unit operation is not normal day sound elimination method
Maintenance personnel in judging the failure, can be put outside the body near the main bearing whorls on both sides of the tunnel are compared, and xin diagnosis to determine main bearing of tapping a larger.When determining main bearing noise really bigger, can remove the oil pan and large noise under the main bearing cover.If found bearing shell with burning phenomenon, it must be replaced;When the shaft neck injury or other damage, should be removed for repair or replacement of the crankshaft.
Connecting rod bearing failure unit operation is not normal day sound elimination method
Maintenance personnel can use single cylinder oil cut-off method to determine what a crock of connecting rod bearing a beat.Its method: after starting diesel generating sets, open the fuel injection pump cover plate, with a screwdriver pry up the movement of the roller body parts, respectively, to determine the sound of each cylinder connecting rod bearing.If disconnect a cylinder oil, noise reduced or disappeared, when oil was restored, suddenly xin to h when, when "sound, then the cylinder of the connecting rod bearing fault. Through the above method to determine which cylinder fault occurs, the unit stop running, remove the body inspection hole cover plate, with a torque wrench to remove the connecting rod under cover for inspection. If the bearing alloy wear serious, fall off, or burn down a bearing should be replaced. If the surface of the shaft neck, hair, or had mild damage corrosion phenomenon, the available touched down for repair.
Piston pin failure unit operation is not normal day sound elimination method
Check, using the method of each cylinder oil cut-off when a cylinder is broken after oil, tapping reduced or disappeared, at the instant of the return to work again "click, click" tapping, this means that the cylinder piston pins fit clearance is too large.If you hear the tapping of a piston pin appear abnormal, also can remove the inspection hole on the body cover plate, toggle crankshaft flywheel ring gear, cause the check cylinder crank to the next check point location, and then hold the cylinder with your hand connecting rod in the middle part, connecting rod shaking back and forth, if feel the gap is bigger, should remove the cylinder head and piston connecting rod component, to further check the piston pin and fit clearance between the connecting rod little head bushing.If clearance than specified value, should be replaced according to the technical requirements of connecting rod small head bushing
Piston failure unit operation is not normal day sound elimination method
Single cylinder oil cut-off method is used to found a cylinder break noise reduced or disappeared after oil, shows that the cylinder has a fault.Removed the cylinder injector, to made a little oil in the cylinder, flywheel ring gear with all long screwdriver 5 ~ 6 laps, and then starting the unit, if the tapping disappear or smaller, more noise again after 1 min, and then the cylinder fitting clearance between the piston and cylinder liner is too big, should change with the same model of piston and cylinder liner.
Valve failure unit operation is not normal day sound elimination method
Remove the cylinder head cover, disc flywheel ring gear to monitor diesel generating set mouth pointer on the flywheel "0" scale, in accordance with the provisions of technical data and adjustment method of the valve clearance, the valve to adjust it again.In the process of adjustment, to check the failure parts and adjust the valve clearance.
Piston ring failure unit operation is not normal day sound elimination method
In the process of the diesel generator set operating blue smoke coming hear and observe the exhaust pipe, single cylinder oil cut-off method should be adopted respectively inspection on each cylinder.If disconnect after a cylinder oil on the diesel engine fuel injection pump, diesel engine is knocking weakened and blue smoke phenomenon also weakens, should stop diesel generating set, remove the cylinder head of the cylinder and the piston connecting rod component for inspection.If found in the check ring break or gap between piston ring and ring groove is too big, should replace the piston ring, replaceable piston when necessary.
Valve spring failure unit operation is not normal day sound elimination method
When heard the valve interior ministry have abnormal sound, should stop after dismantling the valve chamber cover, the appearance of the valve chamber cover and the position of the fixed nut.Separately for each cylinder inlet and exhaust valve spring check carefully.Found to have broken or too soft spring, should change with the new spring.Assembly, should also pay attention to the installation of large and small spring direction
Oil supply unit time is not correct lead to have not operate properly accomplished noise elimination method
Diesel generator set stops running, check whether transmission connection plate two fixed bolts loose phenomenon, if there is loose phenomenon, the check and adjustment should be made for fuel delivery advance Angle adjustment method is detailed in chapter 9 section 3 of the fuel delivery advance Angle inspection and adjustment.
Piston ring leakage causes have not operate properly accomplished noise elimination method
Diesel engine cylinder inner light leak, but by the adaptation of the diesel generating set for a period of time slowly disappear
Cylinder internal leakage heavy generally cannot disappear through the running-in, it will worsen the combustion process, cause the loss of the diesel generator set power, increase the consumption of lubricating oil and blue smoke coming exhaust pipe, etc
When there is gas leakage acoustic diesel engine piston ring, maintenance personnel should be checked by single cylinder oil cut-off method.If a cylinder diesel engine oil, broken piston ring leak "his vision, his" voice weakened or disappeared, and come up to a large number of crankcase vent gas to reduce or disappear, shows that the cylinder has a fault.
After maintenance personnel down the piston connecting rod component, should carefully check the technical condition of piston ring and cylinder liner, does not meet the technical requirements of piston ring and cylinder liner, should carry on the repair or replacement.
Timing gear failure unit operation is not normal day sound elimination method
Remove the diesel engine drive gear cover plate, various timing gear with and without damage, reoccupy feeler each gear, chew or space between the measuring gear bearing clearance at the same time, the damage and do not conform to the technical requirements of the gear, with new parts should be replaced.
Diesel generator is the main force in the engineering machinery, mechanical reason is disabled in light based damage caused, or lead to significant mechanical accident.Troubleshooting of the main working procedures should be: systematic research fault, in the order by Jane to numerous search reason, in a planned way.
LIXISE technicians to practice for a long time to sort out a set of fault diagnosis of the diesel generating set discharge method, basic can find out the cause of the failure and the elimination method, the user can avoid clutter, has no clue
Case analysis
Lixise Generating set health cloud service platform for real-time remote monitoring data in the field devices, complete the following functions
Maximum monitoring 1000 generators at the same time
Real-time monitor generator run data, grasps the generating set health
The fault early warning, early know failure, and timely maintenance
Generator set to run through the industrial remote communication module information acquisition and transmission.Data mainly include: oil, water temperature, battery voltage, speed, frequency, three-phase voltage, three-phase current, power factor, signal operation and all kinds of fault alarm information.Operation data center services all storage units, maintenance records, maintenance records and other information for data mining and statistical analysis to optimize the maintenance plan fault quickly ruled out provides a solid foundation.
Complete historical data storage and concise and beautiful curve analysis chart, can replay at any time the state of operation data and convenient data analysis of rapid troubleshooting.
By developing a good user interface implementation from remote monitoring equipment to manage equipment maintenance, maintenance, spare parts, etc, and data statistical analysis of data mining, etc.
System to collect a lot of technical literature and provide one-on-one for all kinds of fault and maintenance project docking, for troubleshooting and maintenance to provide information of basic provide a solid foundation for reliable operation
General staff can be easily carried out on the generator set data and information timely and accurately troubleshooting online analysis in a timely manner, so as to continuously improve equipment maintenance management level and decrease the failure rate of equipment maintenance plan optimization.To improve and optimize the operation scheme of the unit, and reduces the failure rate, guarantee the sustainable operation.
No matter where, as long as there is network, through the browser to access service management center, can control equipment status anytime and anywhere.
Fixed places of generating sets, by wire private network and monitoring center field or other places of no cable with the generator set using 3 g wireless private network communication and monitoring center.
Monitoring interface cycle display data of the normal operation of the unit.Monitoring software automatically generate reports, including the current outage unit quantity, the current running unit number, amount of fault current unit;Each unit operation statements (work time, load, fault distribution, etc.)
Failure occurs in the operation of the unit, the alarm monitoring center, display failure unit of video images and information, at the same time, the fault information in the form of short message sent to the designated mobile phone
The core of this system is that the generator set health monitoring, its principle is: the data transmission and data processing
In the aspect of data transmission, both cable broadband and wireless 3 g, in view of the industrial controller, the transmission is stable, accurate and safe.For data processing, it is recommended to use the standard configuration software platform, the information collected for centralized storage, report and control and analysis in a timely manner.
The Market value
Centralized monitoring user usage, improve work efficiency
LIXISE generator cloud service system users can use force through PC, mobile phone APP anytime and anywhere, or other mobile terminals, mobile phone text messages, such as multi-channel to monitor oil machine, the operation is convenient, quick, efficiency improved by more than 85% at least.Lixise wireless data terminal 5 minutes to checking scan 1000 generator, greatly enhances the working efficiency of the generator's management, save the scene to see the cost;
Save maintenance and management costs
Unit when a failure occurs, providing detailed information on fault momentarily unit, recreate the fault scenarios, provide scientific basis for generator maintenance.Can be targeted to bring tools or materials, reducing maintenance field the number of times back and forth, save maintenance cost.For some simple fault, can guide the user to quickly solve or temporary solution is given
Expert health diagnosis technology, found potential fault of the unit in advance, to remind the user completes the maintenance work, reduce the probability of failure of the equipment operation, prolong the service life of the unit at the same time
Real-time monitor user usage, in a timely manner to prevent improper operation, reduce the unit loss
Real-time monitor unit load, when the unit load, overload information and push information to monitor at the same time, in order to alert the user to use
Continue to be improper use after warning appears on the unit
When the monitoring to the unit in high temperature or low oil pressure, and other warning information, timely remind users, do a good job related to correct.
