KR20200006958A - Apparatus of remotely starting and preheating for electric motor of diesel-battery hybrid propulsion vessels - Google Patents

Abstract

Disclosed in the present invention is a system for remotely starting and preheating a diesel-storage battery hybrid propulsion vessel, which comprises: a main engine (110) and a generator (120) generating electricity; at least one storage battery (130) which simultaneously performs the functions of storing or supplying the electricity produced by the generator (120); at least one propulsion motor (140) operated by the electricity supplied from the generator (120) or the storage battery (130); at least one propeller (150) which is operated by the propulsion motor (140) to provide propulsion of a main vessel such as a patrol ship and a rescue ship; and a coolant preheating circulation device (160) which preheats a coolant circulating in the main engine (110) to a predetermined temperature before supplying the same. Therefore, in a state in which the main engine is not burdened in order to prepare for an emergency dispatch circumstance of a vessel by preheating the coolant, the propeller of the patrol ship, the rescue ship and the like can be operated at a normal output at the earliest moment.

Description

FIELD OF REMOTELY STARTING AND PREHEATING FOR ELECTRIC MOTOR OF DIESEL-BATTERY HYBRID PROPULSION VESSELS}

The present invention is a diesel-battery hybrid, which can enable the ship to depart quickly by operating the propulsion engine at a normal output as early as possible without causing excessive pressure on the main engine when emergency dispatch situation of patrol boat or rescue ship occurs. A remote starting and preheating system of a propulsion vessel.

As is well known, eco-friendly and high-efficiency design related to propulsion engines in ships sailing is one of the key factors in determining product competitiveness in terms of ship life cycle economics.

Meanwhile, in September 2009, a 3,000-ton hybrid hybrid battery propulsion ship that used a diesel engine and a battery as power was built for the first time. The vessel was the Pacific 9, a 3,000-ton security rescue ship ordered by the Korea Coast Guard. It was 112.7 m long and 14.2 m wide, with four 10,000-horsepower diesel engines and one 750 kW electric propulsion motor. Unlike the conventional method of moving only with a diesel engine, a diesel-battery hybrid propulsion ship can only go to an electric battery when operating at a low speed of 12 knots (22 km / h) or less. 28 knots (51 km / h).

In general, 70% to 80% of the patrol voyages are low speed, so in the case of diesel-battery hybrid propulsion ships, most voyages can be operated with surplus power stored in the batteries, saving about 25% of the fuel used. In addition, emissions of nitrogen oxides are also reduced by about 10 tonnes per year. In addition, low noise navigation, which is the greatest advantage of the electric propulsion engine, can ensure a comfortable life on board the crew and can mitigate pre-exposure to the other party.

In addition, Ampere, a diesel-battery hybrid propulsion ship built in Norway in 2015, is designed to run the engine using existing fuels on a limited basis only when necessary. The Ampere Energy Storage System (ESS) has a capacity of 1,040 kWh (2 units of 520 kWh) and is partially charged for 10 minutes when passengers and vehicles get off the pier after a one-way operation. To this end, 260kWh lithium-ion batteries were installed at each pier to serve as a ship energy storage device and to function as a buffer battery. At the end of the ferry's operation, the batteries were recharged with hydroelectric power in the power grid at night. Ferries operated only by conventional diesel engines emit 2,680 tons of carbon dioxide and 37 tons of nitrogen oxides every year using one million liters of diesel.However, Ampere uses diesel only when it is needed. It is known.

In Norway, after the Ampere, the Vision of the Fjords, a diesel-battery hybrid propulsion ship, was built in August 2016, and in April 2018, the Future of the Fjord, a full electric propulsion ship, was built. The Fjords have been built, and the Vision of the Fjord can charge about 800 kWh in 20 minutes of docking at the port, with a maximum speed of 16 knots.

Hybrid propulsion engine As another example, an electric propulsion LNG carrier driving a propulsion motor by producing a generator by operating a generator with a boil of gas (BOG), which is operated by electricity generated from research and diesel engine heat. An example is the application of waste heat recovery system (WHRS) technology to produce large vessels. The electricity thus produced may be used for various electric or electronic products on board, rather than for propulsion of the ship, and it is known that the energy consumption of the ship is reduced by about 6%.

As another example of a hybrid propulsion engine, a dual fuel engine capable of selectively or mixing liquid fuel and LNG fuel is commercially applied. The dual fuel engine has the advantage of being able to satisfy both environmental and economic aspects by reducing exhaust gas and performing the same performance as a diesel engine.

In addition, the development of hybrid vessels using renewable energy from solar or wind power has been attempted.

In this regard, according to the Republic of Korea Patent No. 10-1999998 "Health monitoring and operation control system of the hybrid electric propulsion ship" (registered on July 09, 2019) state of the electric propulsion ship using the DC generator and lithium storage battery as a common energy source Monitoring and flight control systems are disclosed. As shown in (a) of FIG. 1, a condition monitoring and operation control system of a conventional hybrid electric propulsion ship is a hybrid electric propulsion ship that controls power flow or load sharing between a diesel engine, an electric motor, a battery, and a generator. By controlling the operation by monitoring the state of the ship, it is possible to efficiently control the operation by detecting various state information of the ship.

In addition, according to the Republic of Korea Patent Publication No. 10-2017-0073793 "ship hybrid propulsion system" (published on June 29, 2017), one or more of the diesel engine, gas engine, mixed engine as the first driving force and the power storage unit (storage battery) There is disclosed a hybrid propulsion system for ships using a second propulsion power of an electric motor operated by As shown in (b) of FIG. 1, a conventional marine hybrid propulsion system includes a first engine 2 and a first engine 2 for generating a first driving force corresponding to a first driving speed of a ship. Propulsion power from at least one of the second engine (3), the first engine (2) and the second engine (3) which are spaced apart and generate a second propulsion power corresponding to the second operating speed slower than the first operating speed. Propelling unit 4 for generating a propulsion force, and the control unit 5 for connecting at least one of the first engine 2 and the second engine 3 to the propulsion unit 4 according to the operating speed of the vessel In addition, it enables to perform the optimized operation at both high speed and low speed.

In addition, according to the “A Study on the Output Characteristics of Operation Modes of Hybrid Electric Propulsion Vessel According to Vessel Operating Environment” (published Feb. 2017) introduced in the Journal of Korean Society of Marine Engineering, Vol. A method of connecting an oversized battery to a propulsion motor in series or in parallel has been proposed.

In addition, according to the energy facility management press release, “We can move on electricity!” (Published Jan. 09, 2018), the Ampere, a diesel-battery-propelled hybrid ship, and the Future of the Fjord, an electric-propelled ship, Features and power system layout are introduced.

However, in the preceding prior art, the placement of storage batteries has been introduced in detail, but no mention is made of techniques for remote starting of ships with hybrid propulsion engines, in particular the preheating of main engines.

Korean Patent Publication No. 10-1999998 (Hybrid Electric Propulsion Ship Condition Monitoring and Operation Control System, 2019.07.15) Korean Unexamined Patent Publication No. 10-2017-0073793 (Hybrid Propulsion System, 2017.06.29)

(Document 0001) Kim, Jong-Soo, Hyun-Min Jeon, Deok-Kee Kim, “A Study on the Output Characteristics of Hybrid Electric Propulsion Vessels According to Vessel Operating Environment”, Journal of Korean Society of Marine Engineers, Vol. 41, No. 3, pp.245 ~ 250, 2017.02. publish (Ref. 0002) Energy Facility Management Press, “We Can Move With Electricity!” (Published Jan. 09, 2018) http://www.energycenter.co.kr/news/articleView.html?idxno=425

The technical problem to be achieved in the spirit of the present invention, by remotely controlling the cooling water preheating circulation device from the main ship or land control station to operate the main engine at a normal output as early as possible to enable the rapid departure of the ship, diesel- To provide a remote start and preheating system for a battery hybrid propulsion vessel.

In order to achieve the above object, the present invention, the main engine and the generator for producing electric power; At least one storage battery which simultaneously performs a function of storing or supplying power produced by the generator; One or more propulsion motors driven by electric power supplied from the generator or the storage battery; One or more propellers driven by the propulsion motor to provide propulsion of the ship, such as patrol boats and rescue boats; And a cooling water preheating circulating device for preheating and supplying cooling water circulating through the main engine at a predetermined temperature. The remote starting and preheating system of the diesel-battery hybrid propulsion ship is provided.

Here, the generator, the storage battery and the propulsion motor may be connected to the first sub-grid branched from the main grid, the cooling water preheating circulation device may be composed of a power grid connected to the second sub-grid branched from the main grid.

In addition, between the main grid and the second sub-grid may further include a remote switch that can be connected / disconnected remotely from the main ship or land control station.

In addition, the cooling water preheating circulation device is composed of a heater for preheating the cooling water, a drive pump for circulating the cooling water, a temperature controller for adjusting the temperature of the cooling water, by the temperature controller in accordance with a predetermined lower limit temperature value and an upper limit temperature value. The heater and the driving pump may be operated / stopped.

In addition, the cooling water preheating circulation device may further include a control terminal device that can be monitored and controlled remotely or manually from the main ship or land control station.

In addition, the main pipe and the coolant preheating circulation device may be configured in plural, and the coolant preheating circulation device may be integrally connected to the second subgrid, or may be dividedly connected to the plurality of second subgrids.

In addition, the main grid may use DC power.

The main engine may be any one of a diesel engine, an LNG propulsion engine, and a diesel-LNG mixed propulsion engine.

It is also possible to supply additional power to the main grid from another land battery or land power supply network installed on land while the ship is moored in port.

The cooling water preheating circulation device may further include a remote switch capable of operating / stopping remotely from the main ship or the land control station, and a monitoring device for remotely monitoring the state.

According to the present invention, when an emergency dispatch situation of a patrol boat or a rescue ship occurs by a coolant preheating circulation system operated remotely from a main ship or a land control station, the propulsion engine is operated at a normal output as early as possible without causing any burden on the main engine. By doing so, there is an effect that the ship can be departed quickly.

In addition, as the energy source for preheating the main engine, the ship is supplied from the ship's battery or the land power installed in the port while the ship is moored in the port, so that the main power supply can be operated without any trouble even in the event of failure of any power supply system. It is effective to maintain engine warm up and remote start.

1 illustrates a power system diagram of a diesel-battery hybrid propulsion ship according to the prior art and a power system diagram of an electric propulsion ship interlocked with a power supply facility of a sphere.
Figure 2 shows an example of the remote start and preheating system of the diesel-battery hybrid propulsion ship according to an embodiment of the present invention.
3 shows another example of a remote start and preheating system of a diesel-battery hybrid propulsion ship according to an embodiment of the present invention.
Figure 4 is a separate illustration of the cooling water preheating system of the remote start and preheating system of the diesel-battery hybrid propulsion ship of Figures 2 and 3.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Remote start and preheating system of the diesel-battery hybrid propulsion ship according to an embodiment of the present invention, the power generated by the main engine 110 and the generator 120, the generator 120 to produce power as a whole or Is driven by at least one or more driving motor 140, the driving motor 140, driven by the power supplied from at least one battery 130, the generator 120 or the storage battery 130 to perform the function of supplying at the same time At least one propeller 150 for providing propulsion of the ship such as patrol boats and rescue ships, and a cooling water preheating circulation device 160 for preheating and supplying the cooling water circulating the main engine 110 to a predetermined temperature, Preheat the ship's propellers such as patrol boats and rescue ships as soon as possible without prejudice to the main engines in case of emergency dispatch of the ship. Force and to the base to be movable in.

2 to 4, the remote start and preheating system of the diesel-battery hybrid propulsion ship according to the embodiment of the present invention will be described in detail as follows.

First, the main engine 110 and the generator 120 produce AC power and convert it into DC power by an AC-DC transformer 121 to provide propulsion of the ship. Supply to the propulsion motor 140.

Here, the main engine 110 may be configured of any one of a diesel engine, an LNG propulsion engine, and a diesel-LNG dual fuel engine using light oil or heavy oil.

Next, at least one battery 130 is provided to simultaneously store and supply power generated by the generator 120 or to the propulsion motor 140.

Next, at least one propulsion motor 140 is provided, and driven by electric power selectively supplied from the generator 120 or the battery 130 by switching, thereby providing at least one propulsion force such as a patrol boat and a rescue boat. The above propeller 150, for example, a propeller, is rotated.

Next, the cooling water preheating circulation device (160) preheats and supplies the cooling water circulating in the main engine (110) to a predetermined temperature, and applies it to the main ship such as patrol boats and rescue boats requiring emergency dispatch, and prepares for the emergency dispatch situation. The propeller 150 may be operated at the earliest possible time without operating the 110.

Meanwhile, the generator 120, the storage battery 130, and the propulsion motor 140 are electrically connected to the first sub grid 171 branched from the main grid 170 of the DC power system, and the coolant preheating circulation device 160 is provided. May be divided into a power grid electrically connected to the second sub grid 172 branched from the main grid 170.

Here, the main grid 170 and the second sub-grid 172 further comprises a remote switch (173) that can be connected / blocked remotely from the main line or land control center 200, in the main line or land control center 200 It is possible to control the electrical connection between the main grid 170 and the second sub-grid 172, between the main grid 170 and the first sub-grid 171 connected to the battery 130, the main line or land control station ( Including a remote switch 173 that can be connected / disconnected remotely from the 200, it is possible to control the electrical connection between the main grid 170 and the first sub-grid 171 in the main line or land control station 200. .

In addition, the main engine 110 and the coolant preheating circulation device 160 are configured in plural, and are divided into and electrically connected to the plurality of second sub-grids 172, respectively, as shown in FIG. As shown, the coolant preheating circulation device 160 may be integrated into the second sub-grid 172 and electrically connected thereto.

In addition, as shown in FIG. 4, the cooling water preheating circulation device 160 includes a heater 161 for preheating the cooling water, a driving pump 162 for circulating the cooling water to the main pipe 110, and a preheating temperature of the circulating cooling water. It is composed of a temperature controller 163 for adjusting the, operating the heater 161 and the driving pump 162 by the temperature controller 163 in accordance with the preset lower and upper temperature values to preheat the main engine 110. The on / off coolant can be preheated to enable rapid normal output operation of the propeller 150 to perform an emergency departure.

Here, the coolant preheating circulation device 160 further includes a control terminal device 164 that can be monitored and controlled remotely or manually from the main ship or the land control center 200, and the heater is remotely operated from the main ship or the land control station 200. 161 and the driving pump 162 and the temperature controller 163, the remote control from the main ship or land control station 200 at the time of receiving emergency dispatch orders corresponding to maritime fire, rollover accident, emergency transport of remote island patients or illegal fishing enforcement Remote warming and remote start of patrol boats or rescue ships.

In addition, as shown in Figures 2 and 3, while the ship is moored in the harbor moored by the land battery 210 from the other land storage battery 210 or land power supply network 220 installed on the land main Plugging the power to the grid 170 (230) and additionally supplying it to the cooling water preheating circulator 160 from its own battery 130 or land battery 210 / land power supply network 220 at the docking of the port. By selectively supplying power, even when a power supply system breaks down, the power supply can be normally supplied through another power supply system to prepare for an emergency departure.

In addition, although not shown, the cooling water preheating circulator 160 is a remote switch capable of remotely controlling the operation / stop of the heater 161 and the driving pump 162 from the main ship or the land control station 200, and the heater 161. And further comprising a monitoring device for remotely monitoring the operating state of the driving pump 162 and the temperature controller 163, remote control by a remote switch to prevent fatal results in case of malfunction or failure of the cooling water preheating circulation device 160 and By monitoring the operating status, fail-safe can be achieved.

For reference, the cooling water used in the cooling water preheating circulation device 160 may use fresh water, but may use seawater or nanofluid in some cases.

In addition, the cooling water preheating circulation device 160 is installed separately from a cooling system (not shown) for the purpose of eliminating overheating of the engine generated during the normal operation of the main engine 110 or branched from the cooling system. All cases can be applied.

Therefore, by the configuration of the remote start and preheating system of the diesel-battery hybrid propulsion ship as described above, the main engine in case of emergency dispatch situation of patrol boat or rescue ship by the cooling water preheating circulation system which is operated remotely from the main ship or the land control station. The propulsion engine is operated at normal power as early as possible without any stress on the ship, so that the ship can be departed quickly and is supplied as an energy source for preheating the main engine and supplied from the ship's battery or the land power installed in the port. In the event of a power supply failure, the main engine can be warmed up and remotely started.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

110: main engine 120: generator
121: AC-DC converter 130: storage battery
140: propulsion motor 150: propeller
160: cooling water preheating circulation device 161: heater
162: driving pump 163: temperature controller
170: main grid 171: first sub-grid
172: second sub-grid 173: remote switch
200: land control station 210: land battery
220: land power supply network

Claims (10)

Main engines and generators for generating electric power;
At least one storage battery which simultaneously performs a function of storing or supplying electric power produced by the generator;
One or more propulsion motors driven by electric power supplied from the generator or the storage battery;
At least one propeller driven by the propulsion motor to provide propulsion of the ship; And
And a cooling water preheating circulating device for preheating and supplying cooling water circulating through the main engine at a predetermined temperature. The method of claim 1,
The generator, the storage battery and the propulsion motor is connected to the first sub-grid branched from the main grid, the coolant preheating circulation device is characterized in that it is composed of a power grid connected to the second sub-grid branched from the main grid, Remote starting and preheating system of diesel-battery hybrid propulsion vessels. The method of claim 2,
And a remote switch capable of remotely connecting / blocking the main grid or the second sub-grid from the main line or the land control center. The method of claim 1,
The cooling water preheating circulation device includes a heater for preheating the cooling water, a driving pump for circulating the cooling water, and a temperature controller for controlling the temperature of the cooling water, and the heater is controlled by the temperature controller according to a preset lower limit temperature value and an upper limit temperature value. And activating / stopping the drive pump. The method of claim 1,
The cooling water preheating circulation device further comprises a control terminal device capable of monitoring and controlling remotely or manually from the main ship or land control station, remote starting and preheating system of the diesel-battery hybrid propulsion ship. The method of claim 2,
The main engine and the cooling water preheating circulation device are configured in plural, characterized in that the cooling water preheating circulation device is integrally connected to the second sub-grid, or dividedly connected to the plurality of second sub-grids, Remote starting and preheating system of diesel-battery hybrid propulsion vessels. The method of claim 2,
The main grid is characterized in that the use of DC power, remote start and preheating system of a diesel-battery hybrid propulsion ship. The method of claim 1,
The main engine is any one of a diesel engine, an LNG propulsion engine and a diesel-LNG mixed propulsion engine, characterized in that the remote start and preheating system of the diesel-battery hybrid propulsion ship. The method of claim 1,
And further supplying electric power to the main grid from another land battery or land power supply network installed on land while the ship is moored in port. The method of claim 1,
The cooling water preheating circulation device further comprises a switch capable of remotely monitoring and operating a switch and a state capable of operating / stopping remotely from the main ship or a land control station. .

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