A system and product for efficient operation of a marine diesel engine

Abstract

The utility model relates to ship drive technical field, concretely relates to a kind of system and product that ship diesel generator works efficiently, including energy storage battery, the energy storage battery electric connection PCS module, the energy storage battery signal connection has EMS module, the EMS module signal connection PCS module, the PCS module is electrically connected with diesel generator and load by circuit breaker assembly, the EMS module signal connection circuit breaker assembly, the circuit breaker assembly is electrically connected with commercial power energy supplement component further, the diesel generator is electrically connected with windlass by circuit breaker assembly, the beneficial effects of the utility model are: by introducing battery energy storage system, let diesel generator work in efficient state, bring significant technical innovation and economic benefits for shipping industry.

Description

Technical Field

[0001] This utility model relates to the field of marine propulsion technology, specifically to a system and product for efficient operation of marine diesel engines. Background Technology

[0002] In recent years, diesel generator sets have been increasingly used on ships. In addition to being used as conventional generator sets to provide ship power, they are also being used more and more widely for electric propulsion. Due to their unique advantages, the adoption of full or semi-electric propulsion has become a development trend for ships of several thousand tons or more, especially military ships.

[0003] The power waste of existing marine diesel generators directly affects operating costs and environmental performance. Moreover, the efficiency is low when operating at low loads. The optimal efficiency range of diesel engines is usually 75%-85% of rated power. When the load is below 40%, the fuel consumption rate (BSFC) increases significantly. Traditional PMS starts and stops the generator based on a fixed threshold, which cannot dynamically adapt to load changes, resulting in frequent start-stop or inefficient operation of the diesel generator.

[0004] Therefore, it is necessary to invent a system and product for efficient operation of marine diesel engines. Utility Model Content

[0005] Therefore, this utility model provides a system and product for efficient operation of marine diesel engines to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a system for efficient operation of a marine diesel generator, comprising an energy storage battery, the energy storage battery being electrically connected to a PCS module, the energy storage battery being signal-connected to an EMS module, the EMS module being signal-connected to the PCS module, the PCS module being electrically connected to a diesel generator and a load via a circuit breaker assembly, the EMS module being signal-connected to the circuit breaker assembly, the circuit breaker assembly being electrically connected to a mains power replenishment assembly, and the diesel generator being electrically connected to an anchor winch via the circuit breaker assembly.

[0007] Preferably, the circuit breaker assembly includes a K1 circuit breaker, the PCS module is electrically connected to the K1 circuit breaker, the EMS module is signal-connected to the K1 circuit breaker, the K1 circuit breaker is electrically connected to an ATS1 switch, the ATS1 switch is signal-connected to the EMS module, and the ATS1 switch is electrically connected to a diesel generator.

[0008] Preferably, the mains power replenishment component includes a power grid, and the ATS1 switch can be electrically connected to the power grid.

[0009] Preferably, the circuit breaker assembly further includes a K2 circuit breaker, the PCS module is electrically connected to the K2 circuit breaker, the EMS module is signal-connected to the K2 circuit breaker, the K2 circuit breaker is electrically connected to an ATS2 switch, the ATS2 switch is signal-connected to the EMS module, and the ATS2 switch is electrically connected to the load.

[0010] Preferably, the ATS1 switch is electrically connected to the K3 circuit breaker, and the K3 circuit breaker is electrically connected to the ATS2 switch.

[0011] Preferably, the circuit breaker assembly further includes a K4 circuit breaker, the diesel generator is electrically connected to the K4 circuit breaker, the K4 circuit breaker is signal-connected to the EMS module, and the K4 circuit breaker is electrically connected to the anchor winch.

[0012] A product for efficient operation of marine diesel engines, comprising the aforementioned system for efficient operation of marine diesel engines.

[0013] The beneficial effects of this utility model are as follows: By introducing a battery energy storage system, the diesel generator can operate in a highly efficient state, bringing significant technological innovation and economic benefits to the shipping industry. The battery energy storage system discharges when the diesel generator is under high load and charges when it is under low load, so that the diesel generator always operates in the 75%-90% high-efficiency range, improving fuel efficiency by 15%-25%. The diesel generator and energy storage work together to supply power, with the diesel generator only used in the high-efficiency range, reducing inefficient operating time, reducing diesel generator operating time, directly reducing sulfur emissions, extending the overhaul cycle, and saving 20%-30% in annual maintenance costs. Attached Figure Description

[0014] Figure 1 The system schematic diagram provided for this utility model.

[0015] In the diagram: 1. Energy storage battery; 2. PCS module; 3. EMS module; 4. Diesel generator; 5. Load; 6. K1 circuit breaker; 7. ATS1 switch; 8. Power grid; 9. K2 circuit breaker; 10. ATS2 switch; 11. K3 circuit breaker; 12. K4 circuit breaker; 13. Anchor winch. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] Please refer to the appendix. Figure 1This utility model provides a system for efficient operation of a marine diesel generator, including an energy storage battery 1, preferably a lithium iron phosphate battery. The energy storage battery 1 is electrically connected to a PCS module 2. The PCS module 2 (power conversion system) is the core component of the energy storage system, responsible for the conversion, control and intelligent scheduling of electrical energy, and connecting the power grid, battery and other equipment to achieve efficient energy flow. The energy storage battery 1 is signal-connected to an EMS module 3. The EMS module 3 (power management system) is a comprehensive management system for power distribution, monitoring and optimization, mainly achieving efficient energy utilization through automated control. The EMS module 3 is signal-connected to the PCS module 2. The PCS module 2 is electrically connected to a diesel generator 4 and a load 5 through a circuit breaker assembly. The EMS module 3 is also signal-connected to the circuit breaker assembly, which is also electrically connected to a mains power replenishment assembly. The diesel generator 4 is electrically connected to an anchor winch 13 through the circuit breaker assembly.

[0018] The circuit breaker assembly includes a K1 circuit breaker 6, a PCS module 2 electrically connected to the K1 circuit breaker 6, an EMS module 3 signal connected to the K1 circuit breaker 6, an ATS1 switch 7 electrically connected to the K1 circuit breaker 6, an ATS1 switch 7 signal connected to the EMS module 3, and an ATS1 switch 7 electrically connected to the diesel generator 4. Specifically, the EMS module 3 can control the operation of the diesel generator 4 by controlling the switching of the K1 circuit breaker 6 and the ATS1 switch 7, so that the electrical energy generated by the diesel generator 4 can be replenished to the energy storage battery 1 through the PCS module 2.

[0019] The mains power replenishment component includes a grid 8 and an ATS1 switch 7 that can be electrically connected to the grid 8. Specifically, the EMS module 3 can control the grid 8 to supply power to the energy storage battery 1 by controlling the switching of the ATS1 switch 7, that is, to replenish the energy storage battery 1 through the mains power.

[0020] The circuit breaker assembly also includes a K2 circuit breaker 9, a PCS module 2 electrically connected to the K2 circuit breaker 9, an EMS module 3 signal connected to the K2 circuit breaker 9, an ATS2 switch 10 electrically connected to the K2 circuit breaker 9, an ATS2 switch 10 signal connected to the EMS module 3, and an ATS2 switch 10 electrically connected to the load 5. Specifically, the EMS module 3 can control the switching of the K2 circuit breaker 9 and the ATS2 switch 10 so that the electrical energy in the energy storage battery 1 is converted by the PCS module 2 and supplied to the load 5.

[0021] ATS1 switch 7 is electrically connected to K3 circuit breaker 11, and K3 circuit breaker 11 is electrically connected to ATS2 switch 10. Specifically, when the energy storage system fails, K1 circuit breaker 6 and K2 circuit breaker 9 can be disconnected, K3 circuit breaker 11 can be closed, and ATS1 switch 7 can be switched to the connection side of K3 circuit breaker 11, so that the power grid 8 can directly supply power to the load 5.

[0022] The circuit breaker assembly also includes a K4 circuit breaker 12, a diesel generator 4 electrically connected to the K4 circuit breaker 12, a K4 circuit breaker 12 signal connected to the EMS module 3, and a K4 circuit breaker 12 electrically connected to the anchor winch 13. Specifically, the EMS module 3 can control the operation of the diesel generator 4 to generate electrical energy to supply the anchor winch 13 by controlling the switch of the K4 circuit breaker 12.

[0023] It should be noted that, to ensure electrical safety, when circuit breaker K3 is closed, circuit breakers K1 and K2 are open; when circuit breakers K1 and K2 are closed, circuit breaker K3 is open. Therefore, circuit breaker K3 and circuit breakers K1 and K2 must be interlocked.

[0024] A product for efficient operation of marine diesel engines, comprising the aforementioned system for efficient operation of marine diesel engines.

[0025] The usage process of this utility model is as follows:

[0026] 1) The entire system consists of energy storage batteries, PCS module 2 with STS electronic switch, EMS module 3 (energy management system), circuit breaker assembly, load 5, diesel generator 4, power grid 8, anchor winch 13 and other equipment;

[0027] 2) The entire system can be intelligently controlled by EMS module 3 (Energy Management System) to ensure its effective operation;

[0028] 3) Achieve high-efficiency operation of the diesel generator;

[0029] 4) Auxiliary power on board is supplied by energy storage battery 1;

[0030] 5) When the energy storage battery 1 is discharged to a certain level (e.g., SOC 30%), the EMS module 3 sends a control command to start the diesel generator 4. The diesel generator 4 supplies power to the load 5 and charges the energy storage battery 1 with high efficiency.

[0031] 6) When the energy storage battery 1 is charged to a certain level (e.g., SOC 98%), the EMS module 3 sends a control command to shut down the diesel generator 4, and the load 5 is powered by the energy storage battery 1.

[0032] 7) When the main equipment such as the anchor winch 13 starts running (circuit breaker 12 of K4 is closed), the EMS module 3 receives a signal, sends a control command, and the K1 circuit breaker 6 opens, cutting off the power supply from the diesel generator 4 to the energy storage battery 1. The load 5 is directly powered by the energy storage battery 1. When the main equipment such as the anchor winch 13 stops running (circuit breaker 12 of K4 is open), the EMS module 3 receives a signal, sends a control command, and the K1 circuit breaker 6 closes, restoring the normal operating state (determining whether to start the diesel generator 4 according to serial numbers 5 and 6).

[0033] 8) When the ship docks, if it is possible to connect to the mains power, the ATS1 switch 7 can be switched to the grid 8 connection side to connect the mains power to charge the energy storage battery 1 and supply power to the load 5 at the same time; or the K1 circuit breaker 6 and K2 circuit breaker 9 can be disconnected, the K3 circuit breaker 11 can be closed, the ATS1 switch 7 can be switched to the K3 circuit breaker 11 connection side, and the mains power can directly supply power to the load 5.

[0034] 9) When the energy storage system malfunctions, circuit breakers K1 6 and K2 9 can be disconnected, circuit breaker K3 11 can be closed, and switch ATS1 7 can be switched to the connection side of circuit breaker K3 11, so that the load 5 can be directly powered by the mains power.

[0035] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art can modify this utility model or modify it into an equivalent technical solution using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solution of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A system for efficient operation of a marine diesel engine, comprising an energy storage battery (1), characterized in that: The energy storage battery (1) is electrically connected to the PCS module (2), the energy storage battery (1) is signal connected to the EMS module (3), the EMS module (3) is signal connected to the PCS module (2), the PCS module (2) is electrically connected to the diesel generator (4) and the load (5) through the circuit breaker assembly, the EMS module (3) is signal connected to the circuit breaker assembly, the circuit breaker assembly is also electrically connected to the mains power replenishment assembly, and the diesel generator (4) is electrically connected to the anchor winch (13) through the circuit breaker assembly.

2. The system for efficient operation of a marine diesel engine according to claim 1, characterized in that: The circuit breaker assembly includes a K1 circuit breaker (6), the PCS module (2) is electrically connected to the K1 circuit breaker (6), the EMS module (3) is signal-connected to the K1 circuit breaker (6), the K1 circuit breaker (6) is electrically connected to an ATS1 switch (7), the ATS1 switch (7) is signal-connected to the EMS module (3), and the ATS1 switch (7) is electrically connected to a diesel generator (4).

3. The system for efficient operation of a marine diesel engine according to claim 2, characterized in that: The mains power replenishment component includes a power grid (8), and the ATS1 switch (7) is electrically connected to the power grid (8).

4. The system for efficient operation of a marine diesel engine according to claim 2, characterized in that: The circuit breaker assembly also includes a K2 circuit breaker (9), the PCS module (2) is electrically connected to the K2 circuit breaker (9), the EMS module (3) is signal-connected to the K2 circuit breaker (9), the K2 circuit breaker (9) is electrically connected to an ATS2 switch (10), the ATS2 switch (10) is signal-connected to the EMS module (3), and the ATS2 switch (10) is electrically connected to a load (5).

5. A system for efficient operation of a marine diesel engine according to claim 4, characterized in that: The ATS1 switch (7) is electrically connected to the K3 circuit breaker (11), and the K3 circuit breaker (11) is electrically connected to the ATS2 switch (10).

6. The system for efficient operation of a marine diesel engine according to claim 1, characterized in that: The circuit breaker assembly also includes a K4 circuit breaker (12), the diesel generator (4) is electrically connected to the K4 circuit breaker (12), the K4 circuit breaker (12) is signal connected to the EMS module (3), and the K4 circuit breaker (12) is electrically connected to the anchor winch (13).

7. A product for efficient operation of marine diesel engines, characterized in that: The system includes any one of the above claims 1-6 for efficient operation of marine diesel engines.

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