126 results about "Marine power system" patented technology

A marine power system comprises a motor for providing propulsion. It also comprises an energy storage unit (ESU) for storing and supplying energy to the motor. A prime power system is connected to the ESU and motor for selectively providing energy to these subsystems through a bus. The motor selectively receives energy from the prime power system and the ESU and can supply regenerative braking energy to the bus. The system can also accommodate multiple generator sets providing system power. The ESU can also provide starting power for the prime power system. Alternately, the prime power system drives a mechanical power system output shaft connected to the motor, and the marine system comprises an alternator driven by the prime power system output shaft. The ESU can transmit energy to the alternator. The prime power system can be located on a tugboat displacing a barge carrying the energy storage unit.

The present invention provides a method and apparatus for providing temporary electrical power to stationary locations and moveable locations. For example, vessel marine power systems may be directed to the reduction and elimination of air pollutants produced when using a ship's generator while at dock. The power system is modular, portable, and generates electricity over a wide range of voltages and frequencies.

The invention discloses an experimental platform used for simulation and diagnosis of working conditions of a shipping power system and based on an intelligent engine room. The experimental platform is mainly composed of a shipping power system simulation experiment platform frame, a datum monitoring and failure diagnosis platform body (5) installed on the experiment platform frame and an oil liquid on-line monitoring module (6) connected with the datum monitoring and failure diagnosis platform body (5) through signal lines. The oil liquid on-line monitoring module (6) is connected into a pipeline lubrication system of the experimental platform in parallel. According to the experimental platform used for simulation and diagnosis of the working conditions of the shipping power system and based on the intelligent engine room, simulation of different working conditions of the shipping power system can be achieved, and torque monitoring, vibration monitoring and shaft power monitoring of the shipping power system and a shaft system as well as on-line monitoring of states of lubricating oil and hydraulic oil under different working conditions can be achieved; by combining an intelligent machine learning method, under supporting of a great number of monitoring data, failure diagnosis and state evaluation of the shipping power system under an intelligent engine room framework are achieved; and the experimental platform can be used as a target platform of an intelligent on-line monitoring and diagnosis system.

The invention discloses an oxygen-enriched combustion method of a lignite methyl alcohol coal slurry fuel material in a compression-type internal combustion engine. The problem of difficulty in ignition of the traditional water coal slurry in the internal combustion engine is solved by utilizing the methyl alcohol coal slurry and oxygen-enriched combustion technology; and zero carbon emission of the whole system is realized through collecting CO2 generated by tail gas, and the pollution to environment is eliminated. The method provided by the invention adopts the following technical scheme which comprises the following steps of: taking ultra-fine ultra-clean ignite methyl alcohol coal slurry as a fuel material; taking pure oxygen and CO2 mixed gas with high concentration in recycled tail gas as a combustion-supporting gas; and carrying out enriched-oxygen combustion in the compression-type internal combustion engine, and generating a driving force by the compression-type internal combustion engine. Combustion is carried out by adopting pure oxygen and the recycled CO2 in the tail gas of the internal combustion engine as the combustion-supporting gas, the formation of NOX in the tail gas is reduced effectively, the concentration of CO2 in the tail gas is improved, the tail gas treatment expense is reduced, and the treated tail gas is easy to compress and store. The combustion method is suitable for a distribution-type power generation system and a large ship motive power system.

The invention discloses an energy optimization and control method of a four-engine double-paddle hybrid power propelling system used for carrying out energy optimization and control on the four-engine double-paddle hybrid power propelling system so as to select and switch 8 station modes. The energy optimization and control method comprises a shipping station recognition process, a load status recognition process and a dynamic energy control process, wherein the shipping station recognition process is to obtain an existing shipping station R by adopting a fuzzy neuroid method, the load status recognition process is to compare an existing load with a light load, a middle load and a heavy load to obtain an existing load status L, and the dynamic energy control process is to preliminarily select control parameters of parts according to the existing shipping station R and the load status L, and optimally distribute system energy and switching to an optimal shipping station by adopting energy management based on a dynamic programming method, so as to realize optimal management and control of energy, and reduce fuel oil consumption and exhaust gas emission furthest when the performance of a dynamical system of the ship is ensured.

The present invention provides a method and apparatus for providing temporary electrical power to stationary locations and moveable locations. For example, vessel marine power systems may be directed to the reduction and elimination of air pollutants produced when using a ship's generator while at dock. The power system is modular, portable, and generates electricity over a wide range of voltages and frequencies.

The invention relates to a clean emission ship power system with characteristics of clean emission. The system is provided with an ammonia liquefaction system, an ammonia conveying system and an ammonia fuel main engine. A smoke exhaust pipe of the ammonia fuel main engine is connected with a smoke mixer, tail gas emitted by the ammonia fuel main engine enters the smoke mixer, the smoke mixer is connected with an SCR reactor, and the ammonia fuel main engine is further connected with an ammonia fuel supply system. The ammonia fuel supply system is provided with a liquid ammonia fuel storage tank, a liquid ammonia low-pressure pump is arranged in the liquid ammonia fuel storage tank, and liquid ammonia is pumped out by the liquid ammonia low-pressure pump, passes through a liquid ammonia daily tank, a liquid ammonia booster pump, a first valve, a liquid ammonia heater and a liquid ammonia supply buffer tank and is conveyed to the ammonia fuel main machine. According to the system adopting the ammonia as the ship power fuel, since the ammonia does not contain sulfur and carbon elements, combustion products of the ammonia are only nitrogen and water and serve as main components of air, exhausted tail gas does not contain sulfur oxide and carbon dioxide, the system has the advantages of being clean and environmentally friendly.

The invention discloses an abnormal abrasion monitoring system and an abnormal abrasion monitoring method for a boat motive power system. The system comprises a sensor group and an industrial control computer, wherein the sensor group is used for collecting abrasive particle image data, viscosity data and moisture data of oil liquid according to monitoring parameters set by the industrial control computer and sends the data to the industrial control computer, the industrial control computer is connected with the sensor group and is used for setting the monitoring parameters and storing received data. Through the on-line monitoring of abrasive particles, viscosity and moisture indexes of lubricating oil of boat motive power equipment, the on-line monitoring of the abnormal abrasion of a boat motive power system is realized, the fast response can be made on the abnormal equipment abrasion caused by reasons of lubricating effect reduction and the like because of the emulsification caused by the lubricating oil moisture pollution, and the defects that the sample period of the off-line oil liquid monitoring technology is long, the sampling process is complicated, and the oil sample representativeness is poor are avoided. The method belongs to an effective monitoring method for equipment abrasion conditions and abrasion abnormity of the boat motive power system, and the monitoring method can be used for the state discrimination, the fault diagnosis and the remaining service life predication.

The invention discloses a system and a method for simulating starting process states of a propeller and a shaft system, and belongs to the technical field of a ship power system. The system comprises a simulating propeller, a simulating shaft system, an inertial element and a friction force torque applying mechanism, wherein the simulating shaft system is connected with the simulating propeller, and the inertial element is arranged on the simulating shaft system; a thread pitch adjusting mechanism is used for adjusting the thread pitch of the simulating propeller, and the inertial element is used for adjusting the rotational inertia of the simulating propeller and the simulating shaft system and enabling the rotational inertia to be consistent with the rotational inertia of a to-be-simulated propeller and a to-be-simulated shaft system; the friction force torque applying mechanism is used for adjusting the friction force torque of the simulating propeller and the simulating shaft system and enabling the friction force torque of the simulating propeller and the simulating shaft system to be consistent with the friction force torque of the to-be-simulated propeller and the to-be-simulated shaft system. According to the system and the method for simulating the starting process states of the propeller and the shaft system, disclosed by the invention, the simulation on the starting process states (comprising the load and the rotating speed) of the propeller and the shaft system can be realized by adopting the system; meanwhile, by changing the device parameters, the load simulation of a starting process of the propeller and the shaft system in different power levels can be realized.

The invention relates to a shore-based variable frequency power supply system, which comprises a variable frequency power supply, a port high voltage transformer substation, and a marine power system, wherein the input end of the variable frequency power supply is connected with the port high voltage transformer substation; the output end of the variable frequency power supply is connected with the marine power system; and the power supply system can continuously output three-phase alternating current with a voltage adjustment range of 0-6.6 kV or 0-10 kV and a frequency adjustment range of 0-60 Hz. The output side of the variable frequency power supply is connected with a distribution line via a cable drum, the output high voltage directly distributes power for the marine power system via the distribution line, and the output low voltage passes through a step down transformer and distributes power for the marine power system. The shore-based variable frequency power supply system disclosed by the invention has the advantages that: the power used by the power supply system is derived from the port high voltage transformer substation, so environmental pollution and energy consumption caused by taking a marine fuel generator unit as a power source are greatly reduced, and a high-quality and high-reliability power supply is provided for anchor.

The invention aims at providing a dual-shaft type gas-electric hybrid ship power system. The whole dual-shaft type gas-electric hybrid ship power system comprises a gas machine, a reversible shaft driven motor, a storage battery, a permanent magnet coupler, a clutch, a gearbox, a propeller, a natural gas storage and supply device, an inverter, a frequency converter, a rectifier and a switchboard.The dual-shaft type gas-electric hybrid ship power system is mainly characterized in that the gas machine is connected with the reversible shaft driven motor through the permanent magnet coupler; thereversible shaft driven motor is connected with the gearbox through the clutch; and the power source is the storage battery. According to the dual-shaft type gas-electric hybrid ship power system, theadopted layout of multiple energy forms can meet demands of a ship under various environments and working conditions, the operation efficiency of the gas machine and the reversible shaft driven motoris further enhanced, the fuel consumption and emission of the gas machine are effectively reduced, the power response of the ship is improved and the application range of the system is wide.

A marine propulsion and power supply for maritime vessels that includes an arrangement of modules that can be internal combustion engines, regenerative electric motors, engine generators, turbine generators and / or battery banks. These components can be arranged in such a way as to work together to increase efficiency and to utilize various fuel combinations to achieve the lowest overall operating cost or other goals whilst minimizing harmful emissions. Sensors can be used monitor various power parameters and can be coupled to a closed-loop in a control system to achieve vessel operating goals.

The invention discloses an LNG container filling distribution ship. The LNG container filling distribution ship comprises a main ship body, an LNG storage tank, a ship power system, a ship pushing system, a superstructure and a ship turbine system, and further comprises LNG containers, an LNG container filling system, an LNG combustion system and an LNG injecting system. Empty LNG containers can be filled in the navigation process, so that the time of waiting for filling ashore is greatly shortened, the tank body maintenance time loss caused by no transportation after filling is prevented, theLNG containers go ashore at the first time after filling to achieve railway and highway linked transportation distribution to a farther place, and the covering range of clean energy-LNG is widened. The empty LNG containers are filled on the ship without needing multiple wharf mated facilities, so that the tank LEG container transportation safety, reliability, convenience and economy are improved.

The invention provides an LNG single-fuel ship and belongs to the technical field of ship engineering. According to the structure of the LNG single-fuel ship, a hole is formed in a main deck of a storage tank cabin, the storage tank cabin is designed to be of a sunken structure, one part of a gas storage tank is located above the main deck, the other part of the gas storage tank is located below the main deck, a double-wall pipe in an engine room is adopted as a fuel gas delivery pipe, a rectangular ventilation guide pipe is arranged on the periphery of the tail segment, close to an engine, of the fuel gas delivery pipe, and a round ventilation guide pipe is arranged on the periphery of the segment, on the upstream of the rectangular ventilation guide pipe, of the fuel gas delivery pipe; a liquid outlet pipe on the downstream of a flowmeter is divided into a main path and an auxiliary path, wherein the main path is finally connected to a mixer, and the auxiliary path is connected to the portion, between a second-stage pressure reducing valve and a downstream manual drainage pipe, of the main path through a fault opening type electromagnetic pneumatic valve and an auxiliary path safety valve; the mixer is connected with a supercharger, and the supercharger is connected with the fuel gas delivery pipe. Due to the design, the strength and the stability of the LNG single-fuel ship are improved; fuel adding, fuel feeding and safety protection are achieved, and the safety of a ship power system is guaranteed.

Personal watercraft systems and watercraft power systems are described. The personal watercraft power systems include a housing for supporting a water jet pump and engine system. The housing is constructed to support the power system and removably engage a watercraft. An engine and a centrifugal pump are enclosed in the housing and operatively connected by an endless drive, such as a belt. A crankshaft of the engine is generally aligned and offset for a pump shaft of the centrifugal pump. An impeller is connected to the pump shaft and is constructed in rotate in a plane generally aligned, and preferably offset from, a plane of a water surface. The orientation of the engine and the centrifugal pump provides a watercraft power system that has a reduced profile and is particularly applicable for watercraft constructed to support an operator in a prone position. The housing is constructed to removably engage a number of watercraft configurations and provides a watercraft power system that is easily serviceable, highly versatile and dynamic.

The purpose of the invention is to provide a dual-engine dual-oar gas-electric hybrid ship power system. The whole system is composed of gas engines, reversible motors, a storage battery, a permanentmagnetic coupler, clutches, a gear case, a propeller, a natural gas storage and supply device, an inverter, a frequency converter, a rectifier and a distributing board. The main features of the systemare as follows: two gas engines are connected to the gear case through the permanent magnet coupler, and two reversible motors are connected to the gear case through the clutches, and the power source is the storage battery. The arrangement of various energy forms adopted by the invention can meet the requirements of the ship under various environments and working conditions, further improve theoperating efficiency of the gas machine and the reversible motor, and effectively reduce the fuel consumption and discharge of the gas machine. At the same time, the dynamic response of the ship is improved, and the system has a wide range of applications.

The invention discloses an unmanned vessel full-automatic berthing system and method. The berthing system includes a measurement system, an automatic control system, a berthing execution system, a berthing execution device and a remote monitoring system; the measurement system is used for monitoring the position, motion and surrounding of a vessel; the automatic control system is used for processing data collected by the measurement system in real time to obtain the speed and the angle which are required for vessel berthing, and controlling the berthing execution device to achieve automatic berthing of the vessel; the berthing execution system includes a vessel power system and a berthing system; the berthing execution device includes a vessel power device and a berthing device. The remotemonitoring system can be used for remotely monitoring and controlling the vessel at a shore-based workstation. According to the unmanned vessel full-automatic berthing system and method, through GPSand a radar system, the vessel and a berthing position are accurately positioned, the accuracy of the vessel berthing position is improved, and the vessel and the berthing surrounding are monitored and controlled in real time.

The invention relates to a generator protection device based on a closed-loop marine power system, which solves the problem of closed-loop power system protection which cannot be realized by the existing protection methods. Each generator protection device collects the data related to the operation state, processes the algorithm according to the power system distribution and the internal model ofthe generator protection device, and realizes the fault monitoring and fault determination of each component in the power system. According to the fault judgement, the executing signal of cutting offthe fault circuit or removing the damaged circuit is output to the actuating element to ensure the continuous power supply of the non-fault circuitso as to achieve the goal of providing electricity for as long as possible from as few generating units as possible; through the action command output by the self-protection algorithm and the in-depth grasp of the working characteristics of the generator set, it is ensured that when the generator set fails or the healthy generator set reaches the imminent fault boundary, only the fault loop is removed as soon as possible to minimize the fault coverage, and at the same time, the selectivity of the system and the continuous power supply of the non-fault loop are ensured to the maximum extent.

The invention provides a double-input multi-output parallel operation on-off gearbox used for boats; a first left input shaft is connected with a second left input shaft through a left input shaft clutch; a left reversing driving gear embedded on the second left input shaft is meshed with a left reversing passive gear on a left output pinion shaft; a left output pinion is meshed with an output gearwheel; the left reversing passive gear is also in gearing mesh with PTO; a first right input shaft is connected with a second right input shaft through a right input shaft clutch; a right reversing driving gear embedded on the second right input shaft is meshed with a right reversing passive gear on a right output pinion shaft; a right output pinion is meshed with an output gearwheel; and the right reversing passive gear is also meshed with a gear on a right PTO clutch. The invention meets the requirements of high reliability, high safety and multi-function of ocean engineering ship dynamic systems, has the characteristics of compact structure, small size, safety, reliability, convenient control and the like, and can achieve the effects of increasing the space for carrying objects, and greatly reducing the construction cost and use cost.

The invention relates to a ship power system simulator. The ship power system simulator includes a man-machine interaction system, a modeling and simulation system and a network interface system. The man-machine interaction system includes a diesel engine control table, a power station control table, an auxiliary machine control table, a virtual interaction interface and a monitoring computer. The modeling and simulation system establishes a simulation module according to a mathematic model of a ship power system and realizes ship power system simulation in a SimuEngine simulation support platform. The network interface system includes an Ethernet and a PLC simulator interface system and connects the modeling and simulation system, a PLC and the man-machine interaction system to the Ethernet of the same level. An I / O interface module of the PLC is connected to a corresponding control table. The invention provides the easy and practical ship power system simulator, reduces the simulator development cost, shortens the development period, improves simulator operation reliability and has a good market prospect.

A power system for dynamic positioning of a vessel. The power system reduces fuel consumption, carbon buildup deposits and the risk of cylinder bore glazing while in combustion engine driven generators and provides an adequate protection against blackouts. The power system includes first and second combustion engine driven generators, a battery unit, and a converter unit arranged to provide power to the vessel from the battery unit. A first operational state of the power system in which the first combustion engine driven generator is arranged to deliver power to the vessel, and a second operational state, in which the first generator is subject to a fault, the second combustion engine driven generator arranged to deliver power to the vessel, and the converter unit is arranged to deliver power to the vessel during transition between the states.

Personal watercraft and watercraft power systems that include a power pod for supporting a power plant and a propulsion unit. An engine or an electric motor and a pump assembly are enclosed in the power pod. One or more sponsons removably cooperate with the power pod via a mechanical interface, such as dovetail joints and / or interlocking channels, formed between the power pod and the respective sponsons. A plurality of tool-lessly operable mechanical interfaces, locking mechanism(s), and fluid or electrical signal connectors allow the sponson(s) to be selectively secured to the power pod such that the resultant watercraft is modular and transportable by a single person when necessary.

The invention designs a comprehensive ship power supply system and a monitoring system thereof by organically combining an annular power supply network and a regional distribution technology. Two power buses of the power system penetrate through two boards of a ship and are connected with two generator sets on the head part and the tail part of the ship so as to form an annular grid. The annular grid of the entire ship is divided into a plurality of regions according to load properties and load volumes, and each generator set ensures load power supply in one or more regions. At inlets of the regions, the buses of the annular grid are provided with a plurality of disconnectors. The monitoring system comprises a first layer of bus nodes on the regions, a second layer of region control stations and a third layer of system network, wherein a central computer and the region stations are connected with one another by an industrial Ethernet. According to the invention, a ship power system, a power propulsion system, a communication system and the like are integrated into an intelligent system so as to realize information sharing, uniform energy regulation and control, and coordination action of the system devices.

The invention discloses a ship power system failure diagnosis method based on ensemble learning; based on the ensemble learning, a plurality of weak classifiers having difference are established, so that simple failure type determination is respectively carried out to a test sample, thereby obtaining differential prediction results and further forming strong classifiers. The method can diagnose failures of a main engine of a ship intelligently.

The invention discloses a waste heat utilization system suitable for waste heat energy recovery of a low-speed marine engine. The waste heat utilization system comprises a high-temperature organic Rankine cycle subsystem and a low-temperature organic Rankine cycle subsystem. An air cooler in the system is designed in two segments being a high-temperature segment and a low-temperature segment. Thehigh-temperature organic Rankine cycle subsystem recovers engine exhaust and scavenging air energy through a waste gas heat exchanger, a superheater, an evaporator, a preheater and the high-temperature segment of the air cooler to generate daily steam and output electricity. The low-temperature organic Rankine cycle subsystem recovers jacket cooling water and scavenging air energy through a jacketwater cooler and the low-temperature segment of the air cooler to output electricity. According to the waste heat utilization system, acid corrosion of the heat exchanger surface in the waste heat utilization system can be effectively avoided when the engine is running at low load, the reasonable, safe and effective use of waste heat energy in the range of all working conditions of the engine canbe realized, the thermal efficiency of a ship power system is significantly improved, and EEDI is reduced.

The invention relates to an air-temperature-type air supply device for a marine natural gas engine. The device comprises a liquefied natural gas steel bottle, a low-temperature valve, an air-temperature-type gasifier, a front pressure-regulating pressure gauge, a front pressure-regulating valve, a pressure regulator, a rear pressure-regulating valve, a rear pressure-regulating pressure gauge and a natural gas engine which are connected in series through pipelines; and an LNG (liquefied natural gas) steel bottle, the air-temperature-type gasifier and the natural gas engine are respectively fixed on a splint of a ship. The device disclosed by the invention has the advantages of simple structure, low cost, energy saving, safety and reliability in operation and carbon emission reduction, and is especially suitable for a marine power system in inland river basins in China.

The purpose of the invention is to provide a dual-motor coaxial gas-electric hybrid ship power system. The system includes a gas engine, a generator, motors, a storage battery, a fuel cell, clutches,a gear case, a propeller, a natural gas storage and supply device, substation devices, a shore power device, a ship power grid, and a ship load. The gas engine is connected to the gear case through the clutch. The first motor and the second motor are connected to the gear case through the clutches. The generator is connected to an output end of the gear case. The two motors are connected to each other through a shaft. An electric power source is the storage battery, the generator and the fuel cell. The dual-motor coaxial gas-electric hybrid ship power system adopts a plurality of energy form arrangements, has a plurality of working modes, can meet requirements of ships in various environment and working conditions, can maintain the gas engine and the motors in a high efficiency zone all the time, reduces the fuel consumption and discharge of the gas engine, improves the power response of ships, and enlarges seaworthiness of the ships.

The invention relates to a marine ship power system. The marine ship power system comprises a diesel engine, a motor, a gearbox and a propeller, wherein the gearbox comprises a first input shaft, a second input shaft, a multi-stage intermediate shaft and an output shaft; the first input shaft and the output shaft are arranged coaxially; the first input shaft and the output shaft are connected through a clutch; the second input shaft and the output shaft are driven through a multi-stage gear pair; the first input shaft is connected with the output end of the diesel engine; the input end of the second input shaft is connected with the motor; the output shaft is connected with the propeller; the motor is connected with a main distribution board through a frequency converter; the motor is connected with the input end and the output end of the main distribution board at different time, and a connection state is switched through a contactor; the input end of the main distribution board is further connected with a main generator.

The invention provides a multiple working condition gas-electric hybrid propulsion system applied to a small-size high speed unmanned ship, and belongs to the technical field of ship power systems. The propulsion system is mainly composed of an engine, two clutches, a power separation and synthesis device, a main electric generator / auxiliary electromotor, a main electromotor / auxiliary electric generator, two converters, a lithium-ion battery pack, a battery power charger and a propeller. The propulsion system can form three working modes including pure electric, gas-electric light hybrid and gas-electric high hybrid, and the three working modes can be switched according to actual working conditions. According to the propulsion system, through the effective cooperation of the engine and the electromotor, the characteristics that the electromotor has large torque and high power output at a low rotation speed and the high power output of the engine appears in the high rotation speed zone are fully utilized, the engine and the electromotor are enabled to always work in the maximum efficiency zone, good fuel economy and emission performance can be achieved; and meanwhile, the reliability and maneuverability of the ship are improved, cruising power and self-control ability are enhanced, and the propulsion system has the capacity for being applied to multiple working conditions.