298 results about "Diesel engine generator" patented technology

The invention discloses an electric power control method based on a diesel generator, commercial power and photovoltaic grid connection. The method comprises the following steps: acquiring operation data of commercial power, a diesel generator and photovoltaic-energy storage through an energy management system, constructing a multi-target dynamic optimization model, and distributing power by taking the lowest comprehensive operation cost, the highest power supply reliability and the minimum carbon emission as targets; the power analysis and regulation unit adopts a double-loop mechanism of outer-loop Kalman filtering prediction compensation and inner-loop model prediction control, synchronizes the voltage, frequency and phase of the side to be connected with the grid and the power grid side, and smoothly switches the power change rate of each energy source in the process through a self-adaptive sliding mode control strategy; and the grid-connected switching unit intelligently pre-judges the grid-connected switching opportunity by using a long short-term memory (LSTM) network and fuzzy logic fusion model. According to the invention, the energy utilization efficiency and the power supply stability are improved, multi-energy intelligent dynamic regulation and control are realized, the comprehensive operation cost of the system is effectively reduced, and reliable power supply under complex working conditions is ensured.

The invention belongs to the technical field of emergency power supply systems, and particularly discloses a diesel generator load regulation method and system based on dynamic load regulation, and the method comprises the following steps: obtaining the power generation output quantity of wind power and solar power generation, collecting the real-time load power demand, and obtaining the power generation output quantity of the wind power and solar power generation; judging whether the real-time generating capacity of wind power and solar energy meets the real-time load electricity demand or not, predicting the load electricity demand and the generating capacity of wind power and solar energy, and determining a stability index of the electricity utilization system according to the real-time load electricity demand and the predicted load electricity demand; determining the initial load of the diesel generator according to the real-time load electricity demand, the stability index and the generating capacity of wind power and solar energy; and establishing a target function, and scheduling the diesel generator based on the predicted load electricity demand and the initial load. By adopting the technical scheme, the power output of wind energy, solar energy and diesel generators is flexibly dispatched, and the energy source is timely adjusted according to the dynamic change of the load.

The invention provides an EMS-based multi-source cooperative switching and interlocking control method and system and a storage medium, and the method comprises the steps: firstly, monitoring the state of a power grid in real time, and achieving the quick switching operation through an STS if the power grid is abnormal; then, photovoltaic power supply is started preferentially, when photovoltaic power supply is not available, phase difference is detected in real time through a DZZB-A module, the rotating speed is dynamically adjusted based on the phase difference so as to meet dynamic grid-connected control of an oil engine (diesel generator), and impact-free grid connection is achieved; finally, based on the power supply power and the load power, a PCS charging and discharging mode is intelligently switched, and the stability of the power supply system is improved; meanwhile, through a double-path auxiliary power redundancy mechanism, a working power supply of the STS cabinet is ensured, and a power loss blind area of a control circuit is eliminated; in addition, through safety interlocking logic, automatic breaking of the power grid and the oil engine is achieved, and the problem of short circuit caused by parallel connection of power sources is prevented. The power supply system reliability is improved.

The invention discloses an efficient diesel generating set, and belongs to the technical field of diesel generating sets. Comprising a rack, a diesel engine and a generator are fixedly connected to the rack, a rotor of the generator is fixedly connected with a power shell, the power shell is rotationally connected with a transfer shell, the transfer shell is fixedly connected with a bearing shell, a crankshaft of the diesel engine is fixedly connected with the bearing shell, and an embedding unit used for guaranteeing transmission safety is arranged on the power shell; the embedding unit comprises first embedding pieces which are distributed in a circumferential array mode, the first embedding pieces which are distributed in the circumferential array mode are fixedly connected to the power shell, and second embedding pieces which are distributed in the circumferential array mode are slidably connected to the transfer shell. According to the invention, through the cooperation of the first embedding piece and the second embedding piece, when the crankshaft or the rotor is suddenly blocked, the power connection between the crankshaft of the diesel engine and the generator is completely disconnected, so that irreversible damage to the crankshaft or the rotor caused by the blocking condition is prevented.

The invention provides a load tracking control method for an energy storage system in an oil field scene, which realizes cooperative control of constant-power operation of a generator and rapid compensation of energy storage. The system comprises the following mechanisms: a diesel generator; the energy storage system comprises an energy storage converter PCS and an energy storage battery pack; the AI sampling module is used for respectively sampling implementation voltage and current data of the diesel generator and the load through a voltage transformer PT and a current transformer CT; the EMS system side power calculation module comprises an energy management system power calculation module and a power conversion system; and an oil field load; an output end of a diesel generator and an output end of an energy storage converter PCS are converged to a load output line and then are connected to an oil field load, an AI sampling module also samples voltage and current data of the load output line, the diesel generator and an energy storage system supply power to the oil field load at the same time, and an engine operates in a high-efficiency interval. And the energy storage system bears instantaneous power fluctuation.

The invention discloses a light-diesel hybrid energy storage system and a control method thereof, and belongs to the field of microgrids. The system comprises a photovoltaic power generation unit, a diesel generator set, a hybrid energy storage unit (a storage battery and a super capacitor), an AC / DC bus, a bidirectional AC / DC converter and a system controller. The controller executes hybrid energy storage frequency division control (without sampling load power and distributing power through bus voltage), V / f control and nine multi-mode energy management strategies, and monitors parameters such as photovoltaic output, load power, energy storage charge state and the like in real time to realize intelligent mode switching. The super capacitor preferentially responds to the pulse load, and the voltage fluctuation ratio is smaller than or equal to 5%; the service life of the storage battery is prolonged in combination with energy storage charge state threshold management; photovoltaic maximum utilization enables the system efficiency to be greater than or equal to 90%, and the diesel oil consumption is obviously reduced. The method is suitable for power grid coverage difficulty scenes such as off-network communication base stations, remote sentries and emergency power supply stations, and has high reliability and maneuverability.

The invention discloses a hybrid energy storage power supply system for diesel engine replacement and an energy management method, and relates to the technical field of hybrid energy storage power supply and management methods. An assembly with the photoelectric conversion efficiency exceeding 23% and a 10KV-level string type inverter are adopted, and a photovoltaic-energy storage combined MPPT control function is integrated; the lithium iron phosphate energy storage system is matched with a bidirectional PCS and an active equalization technology, and is designed according to 1.5 times of daily peak-valley difference and 2 hours of emergency standby power; the diesel generating set group is started in a grading manner according to load gaps, and is matched with a 10KV / 380V intelligent charging unit; the coordination control center realizes two-dimensional prediction and coordinated scheduling based on an LSTM neural network, couples each unit through a 10KV intelligent bus system, divides load priorities, collects meteorological and equipment parameters, and constructs photovoltaic priority consumption, energy storage stabilization fluctuation, diesel generator guarantee emergency, and flexible and adjustable charging operation modes. The method has the advantages that the energy utilization efficiency is improved, the power supply stability is enhanced, the whole-cycle cost is reduced, limited operation and maintenance scenes are adapted, and diversified power supply requirements are met.

The invention discloses an island micro-grid frequency coordination control method based on flywheel and battery hybrid energy storage, and provides a hybrid energy storage coordination control method for solving the problem that a diesel generator in an island micro-grid is low in inherent response speed and difficult to deal with rapid load disturbance in time. The method combines the advantages of a flywheel energy storage system (FESS) and a battery energy storage system (BESS) to construct a multi-time-scale frequency regulation mechanism: the FESS is responsible for absorbing or releasing a high-frequency power component and quickly responding to instantaneous fluctuation; the BESS bears an intermediate-frequency power component and realizes medium-term energy regulation; and the diesel generator compensates the low-frequency power component and maintains long-term steady-state operation. Through the multi-unit collaborative hierarchical control, the frequency stability and the operation reliability of the island micro-grid are remarkably improved, the dynamic regulation pressure of the diesel engine is reduced, and the frequent charge-discharge cycle of the battery is reduced, so that the service life of the energy storage system is prolonged.

The invention provides an integrated intelligent verification system and method for a diesel generator speed regulation system. The system comprises a mechanical speed regulation testboard, an electronic speed regulation testboard and an intelligent verification device. The intelligent verification device comprises an upper computer device and a lower computer device. The upper computer equipment is used for simulating and outputting the working mode of the diesel generator and providing test working parameters for the electronic speed regulator and the mechanical speed regulator based on the working mode of the diesel generator; the lower computer equipment is respectively connected with the upper computer equipment, the electronic speed regulator, the mechanical speed regulation control box and the detection equipment, and is used for correspondingly sending test working parameters to the electronic speed regulator and the mechanical speed regulator, and collecting working state parameters of the electronic speed regulator and working state parameters of the mechanical speed regulator to the upper computer equipment in real time; and the upper computer device displays and analyzes the working state parameters so as to verify the electronic speed regulator and the mechanical speed regulator. According to the invention, off-line test verification can be carried out on the diesel generator speed regulation system.

The invention relates to an oil well wind-solar-diesel intelligent power generation and oil pumping control system which is characterized by comprising a photovoltaic MPPT charging module, a fan charging module, a rectifier module, a frequency converter, a diesel generator, a BMS battery management module, an EMS energy management module, a touch screen display module and an RTU communication module. The EMS energy management module is used for coordinating and controlling the generated power of the photovoltaic module, the fan module, the diesel generator and the rectifier module, preferentially using the photovoltaic module and the fan to generate power, and adjusting the running state of each module according to the battery voltage, the SOC and the load power of the BMS; the diesel generator can be used in areas without electricity to perfectly replace a diesel generator. Compared with a diesel generator for oil pumping or power generation, the system has the greatest advantages of low maintenance cost and high economic benefit.

The utility model relates to the technical field of diesel generating sets, and discloses an ultra-silence type diesel generating set which comprises a waterproof box body, a top cover is hinged to the top of the waterproof box body, a rectangular opening A is formed in the top of the top cover, a filter screen A is fixedly installed in an inner cavity of the rectangular opening A, and a rectangular opening B is formed in the bottom of the waterproof box body. And a filter screen B is fixedly mounted in an inner cavity of the rectangular opening B, and a cleaning assembly is arranged at the top of the filter screen B. When the diesel generator body works, vibration is generated to extrude a plurality of dampers and damping springs, and when a movable plate moves downwards, adjacent sliding blocks can move towards the sides away from each other through hinge rods; and furthermore, the connecting lugs fixed to the adjacent sliding blocks can move towards the sides away from each other, the adjacent telescopic springs can be extruded, damping can be conducted when the diesel generator body works, noise is avoided, and the working environment quality of the device is improved.

The utility model discloses a 400V station service power switching and diesel generator remote automatic input system for a hydropower station, and belongs to the field of power switching. The utility model aims to solve the problem that manual closing of plant diesel generator power supply equipment is easy to cause accidents. The first power supply end is connected to a movable contact of a first dual-power-supply change-over switch through a first circuit breaker, a first transformer and the other end of a first isolation disconnecting link in sequence, a static contact of the first dual-power-supply change-over switch is connected with a 400 V bus, and the other movable contact of the first dual-power-supply change-over switch is connected with a static contact of a second dual-power-supply change-over switch. One movable contact of the second dual-power change-over switch is connected with a second power supply end through a second isolation disconnecting link, a second transformer and a second circuit breaker in sequence, and the other movable contact of the second dual-power change-over switch is connected with the diesel generator through a third isolation disconnecting link; one phase of phase voltage is randomly selected from the 400V bus to be connected to the voltage input end of the diesel generator starting circuit; and detecting whether the 400V bus is electrified or not, and judging whether to control the diesel generator to start or not. The method is used for automatically switching power supply.

The invention relates to the technical field of ship power system energy management, and particularly discloses an energy management optimization method and system based on a ship microgrid, and the system comprises a photovoltaic power generation unit, an energy storage unit, and a diesel generator unit. The photovoltaic power generation unit is provided with a maximum power point tracking controller to achieve the maximum utilization rate of solar energy, the energy storage unit comprises a storage battery and a bidirectional power converter, the charge state is monitored in real time, a safety threshold value is set, and the diesel generator unit serves as a standby power supply. Based on an improved logic threshold control mechanism, a photovoltaic power generation unit is used as a main energy source and works at a maximum power point; the energy storage battery is a secondary buffer unit, a charge state safety threshold value is set, dynamic charging and discharging are carried out, and when photovoltaic output is surplus and the storage battery does not reach the upper limit, surplus electric energy is stored in the storage battery.

The invention belongs to the technical field of diesel generator stators, and particularly relates to a diesel generator stator core punching sheet forming device and method.The device comprises a material carrying assembly, an auxiliary material transferring assembly, a punching assembly and a material receiving assembly, and the punching assembly is arranged above the material carrying assembly; an auxiliary material transferring assembly and a material receiving assembly are sequentially arranged at the position, located below the stamping assembly, of the material carrying assembly. Continuous step-by-step stamping can be carried out on the rectangular silicon steel raw material sheet, and the overall stamping difficulty is reduced. After stamping, the stator iron core punching sheets can be stacked and welded into the stator iron core in time, the opening belt is used as a welding material in the welding process, the welding seam structure and performance of the same material are consistent with those of a punching sheet base body, the problems of interface reaction, middle layers or inclusions and the like do not exist, and good connection quality and welding stability can be guaranteed.

The invention discloses an ultra-silence diesel generating set, and relates to the technical field of diesel generating sets, the ultra-silence diesel generating set comprises a support, a diesel generating set body is arranged on the top surface of the support, the diesel generating set body comprises a diesel engine, a generator body and a control module, and the diesel engine is arranged on the top surface of the support and used for converting chemical energy of diesel into mechanical energy; a diesel engine set body, a generator body, a connecting roller, a gear, a driving motor, a first positioning block, a second connecting rod, a third connecting rod, a second positioning block, a damper, a connecting ring, a second spring, a clamping plate, an electric push rod and a fixing strip which are arranged are matched with one another, so that the stroke of the damper and the second spring can be shortened and locked; when the diesel engine set body vibrates at low frequency, the stroke of the damper and the stroke of the second spring are long, damping of the diesel engine set body is better achieved, noise generated when the diesel engine set body is used is reduced, the noise reduction effect on the diesel engine set body is achieved, and ultra-silence of the diesel engine set body is achieved.

The invention relates to the technical field of generator sets, and discloses a multifunctional portable generator set which comprises a sound insulation shell and further comprises a buffer device arranged at the bottom of an inner cavity of the sound insulation shell, a diesel generator set is fixedly installed at the top of the buffer device, and an exhaust silencing mechanism is fixedly connected to an exhaust port in the right side of the diesel generator set. The right side of the sound insulation shell is fixedly connected with a ventilation and noise elimination mechanism, the noise elimination assembly is arranged, the baffles are arranged in the axial direction of the installation barrel at gradually-changing intervals, and the installation barrel is divided into a plurality of expansion chambers with the lengths gradually decreased in the airflow direction. When diesel engine tail gas enters the expansion chamber from the round pipe or enters the round pipe from the expansion chamber, the sectional area of the flow channel is suddenly expanded or shrunk, acoustic impedance mutation is formed, and exhaust noise is effectively reduced. In addition, due to the fact that the lengths of the expansion chambers are distributed in a gradually-changing mode, the silencing assembly can cover low-frequency noise in a wider frequency range, and the noise reduction effect on the low-frequency noise is improved.

The invention discloses a diesel storage photoelectric network system which comprises a photovoltaic system, a diesel generator set, a load, an energy storage device and a control unit. The control unit comprises a monitoring module, and the monitoring module is connected with the diesel generator set, the photovoltaic system, the load and the energy storage device. The monitoring module is connected with a control module, and the control module is connected with a switching execution module and a communication module; the switching execution module is connected with the diesel generator set and the energy storage device. The communication module is connected with a diesel generator controller, a photovoltaic inverter, an energy storage BMS, a load management system and a control center. The invention further discloses a control method of the diesel storage photoelectric network system. The control method comprises a diesel generator set fault control method and a photovoltaic power sudden drop control method. According to the system and the method, rapid cooperation of the energy storage and the diesel generator can be realized, seamless switching between power supplies is ensured when the system encounters a fault, and continuous and stable power supply of a key load is ensured.

The invention relates to a diesel-optical-storage hybrid system energy storage configuration method and system considering inertia response. The method comprises the following steps: determining a minimum demand value of inertia of a diesel-optical-storage hybrid system according to a micro-grid frequency stability index; the minimum demand value of the virtual inertia of the optical storage VSG is obtained according to the minimum demand value of the inherent inertia of the diesel generator and the minimum demand value of the inertia of the diesel-optical storage hybrid system; further obtaining an output power constraint limit value of the optical storage VSG; the dynamic characteristics of the photovoltaic cell are described as an output power curve by adopting an implicit curve fitting mode, and the maximum output power fluctuation range of the photovoltaic cell under the inertia frequency modulation scale is obtained; and the maximum charging and discharging power of the storage battery is determined by combining the output power constraint limit value of the optical storage VSG, so that the maximum power configuration of energy storage is obtained. Compared with the prior art, the method has the advantages that the frequency collapse risk caused by photovoltaic fluctuation or response delay of the diesel generator is remarkably reduced, and an energy storage plan considering safety and cost is provided for a novel power system.

A liquefied natural gas (LNG) production complex includes a gravity-based structure (GBS), with liquid storage tanks inside and topside modules on the GBS top slab including interconnecting modules along the GBS top slab centerline, and equipment modules at least some of which are on each side. Equipment modules include: first row on one side: at least one module of reception installations, a condensate stabilization installation, and an acid gas removal installation, and at least one module of mixed refrigerant compressors, second row on the other side: modules of gas dehydration, mercury removal, wide fraction of light hydrocarbons extraction, fractionation and liquefaction installations, and at least one module of boil-off gas, fuel gas system and heating medium compressors; the equipment modules along the GBS short end include: one or more power plant modules, modules with the main technical room and emergency diesel generators, and auxiliary systems modules.

The utility model discloses a diesel generator flue gas purification mechanism for civil air defence engineering, including air inlet pipe and purification bin, the air inlet pipe one end is linked with diesel generator exhaust pipe in civil air defence engineering power generation room intercommunication, the other end of air inlet pipe is inserted into the purification bin and the opening direction is perpendicular to downward, the open end position of air inlet pipe in the purification bin is connected with the shunt joint, each interface of shunt joint all is connected with the jet pipe that the air hole of pipe body lateral wall is evenly set up, the utility model relates to civil air defence engineering technical field, utilize liquid supply booster pump and press into the spray subassembly in alkaline solution (15% magnesium hydroxide compound agent), and further via spray subassembly to the spray of filler layer, make the nitrogen monoxide, nitrogen dioxide, sulfur dioxide and particulate matter etc. in tail gas contact with the alkaline water mist in purification bin and filler layer, to the purification treatment of nitrogen monoxide, nitrogen dioxide, sulfur dioxide and particulate matter.

The utility model relates to the technical field of tail gas particulate matter trapping, in particular to a diesel generator tail gas particulate matter trapping device. According to the technical scheme, the air purifier comprises a mounting shell and a filter element, an air inlet pipe is fixed to the front end of the mounting shell, an exhaust pipe is fixed to the tail end of the mounting shell, a core sleeve is fixed to the middle of the interior of the mounting shell, a pair of mounting grooves are formed in the outer side of the core sleeve, the filter element is arranged in the mounting grooves, and open grooves are formed in the positions, aligned to the mounting grooves, of the mounting shell. A sealing cover is installed in the opening groove, rotating plates are rotationally connected to the positions, located at the two ends of the core sleeve, in the installation shell, and flow guide holes are formed in the rotating plates. According to the utility model, particulate matters are captured by utilizing the two filter elements which are alternately collected in the mounting shell, and tail gas can be drained into different mounting grooves through the rotation of the rotating plate, so that the filter elements can be disassembled and cleaned under the condition that the machine is not stopped.

The application provides a monitoring system and a monitoring method for an emergency diesel generator, the monitoring system comprising at least one receiving end, the receiving end being in wired communication connection with a control cabinet of a corresponding emergency diesel generator, and being used for acquiring working parameters of the emergency diesel generator; and an operating end, the operating end being in wireless communication connection with the receiving end, and being used for receiving the working parameters of the emergency diesel generator; wherein the operating end is further used for receiving working parameters of the emergency diesel generator after adjustment by an operator, and generating corresponding control instructions, and the receiving end controls the corresponding control cabinet to adjust the working parameters of the emergency diesel generator according to the control instructions. Through the monitoring system and the monitoring method for the emergency diesel generator, the timeliness of unit parameter acquisition and control intervention can be improved, and efficient operation and safe monitoring of the emergency power supply system can be ensured.

1. The name of this design product: Control box (intelligent calibration platform for diesel engine speed control system). 2. Purpose of this design product: Used for offline detection and functional verification of diesel generator speed control devices. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The invention discloses a tail gas waste heat recovery device for a generator set, and belongs to the field of waste heat recovery. Comprising a diesel generating set, recycling boxes and ventilation pipes, the four recycling boxes are arranged at the top of the diesel generating set and communicate with one another through the ventilation pipes, the starting ends of the ventilation pipes communicate with the exhaust end of the diesel generating set, and recycling parts are arranged in the recycling boxes. When the reciprocating lead screw rotates, the lead screw nut can be driven to transversely move along the lead screw, then the baffle is driven to push the heat conduction fins to transversely slide along the heat absorption pipe, meanwhile, the retraction part on the middle partition plate converts transverse movement of the sliding tooth block into vertical movement of the tooth plate through transverse-vertical meshing transmission of the double gears, and the heat conduction fins are driven to transversely slide along the heat absorption pipe. And the baffle is driven to slide downwards and retract, automatic reciprocating circulation of pushing and scraping, downward retraction and secondary pushing of the baffle is achieved through cooperation of the baffle and the baffle, and a recycling box does not need to be manually disassembled to clean the heat absorption pipe.

The utility model provides a diesel generator mechanical speed regulator test bench. The diesel generator mechanical speed regulator test bench comprises a mechanical speed regulator, a mechanical speed regulation transmission case, a detection device and an instrument panel. Wherein the mechanical speed regulator is arranged on the mechanical speed regulation transmission case through a base and is controlled to operate through the mechanical speed regulation transmission case; the mechanical speed regulation transmission case is connected with a lower computer device and an electronic speed regulator of the intelligent verification device, and operates based on test signals received from the lower computer device and the electronic speed regulator. The detection equipment is arranged on the mechanical speed regulator, is connected with the lower computer equipment and is used for transmitting detected operation parameters of the mechanical speed regulator to the lower computer equipment; and the instrument panel is arranged behind the mechanical speed regulator, is respectively connected with the mechanical speed regulator and the mechanical speed regulation transmission case, and is used for displaying operation parameters of the mechanical speed regulator. The operation state of the diesel engine speed regulation system can be monitored, the fault judgment and decision time is shortened, the factory return test verification cost of a mechanical speed regulator can be remarkably reduced, and the reliability and usability of the speed regulation system are guaranteed.

The application discloses a kind of wind farm isolated network heat supply system operation control method and device.Wind farm isolated network heat supply system operation control method includes based on the active stable operation state of wind farm isolated network heat supply system, determine the active output state of diesel generator, fan and network type energy storage unit;Based on the reactive stable operation state of wind farm isolated network heat supply system, determine the reactive output state of diesel generator, fan and network type energy storage unit;Based on the voltage stable operation state of wind farm isolated network heat supply system, determine the voltage output state of diesel generator, fan, network type energy storage unit and static var compensator;According to active output state, reactive output state and voltage output state, to complete the operation control of wind farm isolated network heat supply system.Frequency is adjusted quickly, to ensure that system frequency is stably operated, and the quick grid connection and operation of system are realized.

This invention provides a controller for a low constant-speed traction system of a multi-mode new energy locomotive, comprising: an excitation control module connected to a diesel generator set; an uncontrolled rectifier module connected to both the diesel generator set and a DC-DC converter module; a DC-DC converter module connected to the uncontrolled rectifier module, an energy storage device, and a traction module; a traction module connected to the diesel generator set, the DC-DC converter module, and a load; and a control system connected to the excitation control module, the DC-DC converter module, and the traction module. The control system acquires information on the external power supply type and control mode requirements via hard-wired or network signals. Through internal communication, it regulates the cooperation of each module to dynamically adjust the output torque, output power, and power change rate, achieving optimized selection of the target speed and redundancy and coordinated control of the current axle speed. This addresses the requirements of new energy locomotives for low constant-speed loading / unloading and extremely low-speed loading operations.

The invention relates to the technical field of diesel generating sets, and discloses a diesel generating set based on intelligent control, which comprises a diesel generating set, a diesel generator is arranged on one side of the diesel generating set, a sound-light alarm component is arranged above the diesel generating set, and a rotor is arranged at the output end of the diesel generator. A clamping notch is formed in the end, away from the diesel generator, of the rotor, a mounting ring is arranged on the side wall of the front end of the diesel generator, a circular mounting plate is arranged in an inner cavity of the mounting ring, and a touch switch is arranged on one side wall of the mounting ring. The inner cavity of the mounting ring is further provided with four mounting blocks which are distributed in a circumferential mode, and notches are formed in the side walls, opposite in pairs, of the four mounting blocks in a penetrating mode. According to the invention, when the rotor axially moves, the mounting block can be firstly driven to move through the positioning plate, the placement plate is driven to synchronously move through the movement of the mounting block, and when the mounting block cannot move, the maximum movement distance of the placement plate is the area, so that the movement of the rotor is prevented from being aggravated, and the damage is reduced.

This utility model relates to the field of generator technology, specifically to a noise reduction device for a diesel generator set, including an outer shell for accommodating the diesel generator set and a first isolation plate and a second isolation plate welded and fixed inside the outer shell. The top of the outer shell is provided with an oil inlet, and the bottom end of the oil inlet is connected to an oil supply pipe whose side end is connected to the diesel engine of the diesel generator set. The inner wall of the outer shell is provided with a sound-absorbing layer, and the bottom of the inner wall of the outer shell is provided with a first shock-absorbing support for supporting the diesel engine of the diesel generator set, and the bottom of the inner wall of the outer shell is provided with a second shock-absorbing support for supporting the generator of the diesel generator set.

The present invention discloses a diesel generator device based on photovoltaic power generation, including a diesel generator. A storage battery is provided inside the diesel generator. On both sides of the upper end of the housing, symmetrically distributed storage grooves are provided. A plurality of solar panels are provided in the storage grooves. In the storage grooves on both sides of the solar panels, symmetrically distributed scissor-type telescopic mechanisms for driving the plurality of solar panels to expand outwards are provided. The solar panels are rotatably arranged between the scissor-type telescopic mechanisms. A sealing plate for engaging and connecting and sealing the storage groove is provided at the outlet of the storage groove. The extension end of the scissor-type telescopic mechanism is connected to the sealing plate. Stacking the solar panels vertically in the storage groove realizes the hiding of the solar panels when not in use, without affecting the overall use. When in need of use, through the scissor-type telescopic mechanism, the solar panels can be expanded outwards for solar power generation and charging.