CN214171965U - Modularized power system taking LNG as fuel - Google Patents

Abstract

The utility model provides a modularized power system using LNG as fuel, which comprises a container shell, a fuel storage unit, a fuel preparation and supply unit and a generator unit, wherein the fuel storage unit, the fuel preparation and supply unit and the generator unit are arranged in the container shell; the fuel storage unit is connected with the fuel preparation and supply unit, and the fuel preparation and supply unit is connected with the generator set unit. The utility model discloses an use modularization driving system of LNG as fuel through standardized container formula modularized design and arrangement, makes the more nimble and extensive application that LNG can be on boats and ships as clean fuel to reduce the initial investment cost of boats and ships when using the LNG fuel.

Description

Modularized power system taking LNG as fuel

Technical Field

The utility model relates to a boats and ships driving system field especially relates to an use modularization driving system of LNG as fuel.

Background

The design and manufacturing techniques for container-type modular power units fueled by light diesel fuel are well established and have been widely used in various industrial fields. The system mainly comprises a diesel generator, a diesel storage cabinet, corresponding system pipelines and an electric power system, all equipment and systems are arranged in a standard container of 20 feet or 40 feet, the transportation and the replacement are convenient, and the power range is 400 kW-1000 kW.

With the stricter limit of the international maritime organization on the nitrogen oxide and sulfur oxide discharged by the ship engine, the application of the traditional modular power unit taking diesel oil as fuel can not meet the latest environment-friendly requirement, and the modular power unit taking LNG as fuel can perfectly solve the problem of the discharge pollution of the engine exhaust gas and meet the latest requirement of the international maritime organization.

The use of existing LNG fuel in ships has become more widespread, and the technology as a stationary LNG fuel power system disposed on ships has become mature, including gas fuel engines, LNG fuel storage tanks, and LNG fuel supply systems. All equipment and systems are applied to ships by adopting fixed design and arrangement, so that the replacement or expansion of the whole set of power system is not facilitated, the initial investment is high, the construction cost is too high for small transport ships, the application on the small ships is lack of flexibility and expandability, and the application of LNG as clean fuel by the ships is not facilitated.

Disclosure of Invention

To not enough among the above-mentioned prior art, the utility model provides an use modularization driving system of LNG as fuel, through standardized container formula modular design and arrangement, make LNG more nimble and extensive application that can be on boats and ships as clean fuel to reduce the initial investment cost of boats and ships when using the LNG fuel.

In order to achieve the above object, the present invention provides a modular power system using LNG as fuel, comprising a container housing, a fuel storage unit, a fuel preparation and supply unit and a generator unit, which are disposed in the container housing; the fuel storage unit is connected with the fuel preparation and supply unit, and the fuel preparation and supply unit is connected with the generator set unit.

Preferably, the fuel storage unit comprises a vacuum pressure tank.

Preferably, the vacuum pressure tank adopts a double-layer heat-insulation C-shaped tank, and the vacuum pressure tank is cylindrical.

Preferably, the fuel preparation and supply unit comprises a pressure balancing unit, a gas evaporator and a gas valve bank unit; the fuel storage unit is connected with the pressure balance unit and the gas evaporator through pipelines, the gas evaporator is connected with the gas valve group unit through pipelines, and the gas valve group unit is connected with the generator set unit through a double-layer pipeline.

Preferably, the double-layer pipeline comprises an inner pipe and an outer pipe, the gas valve group unit is connected with the generator set unit through the inner pipe, and the outer pipe is sleeved outside the inner pipe; still include an exhaust system, exhaust system connect the outer tube and with the outside intercommunication of container shell.

Preferably, the generator set unit comprises a natural gas fuel engine and an alternating current generator which are connected, and the natural gas fuel engine is connected with the gas valve group unit through the double-layer pipeline.

Preferably, the natural gas fueled engine includes an air cooling system in communication with the exterior of the container shell for exhausting air through a ventilation grille.

Preferably, the container housing forms a generator set compartment, the generator set unit being disposed within the generator set compartment; and the two sides of the generator set chamber are respectively provided with an inlet and outlet door, and the inlet and outlet doors are provided with air inlet grids.

The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:

the utility model discloses the environmental protection characteristic of LNG fuel and the characteristics of modularization power pack's flexibility have been combined, have used clear LNG fuel for the power pack of fuel for former diesel oil that uses, have improved the feature of environmental protection, for traditional fixed LNG fuel driving system, adopt the design of standard container formula modularization power pack, have improved nimble convenience and the scalability that power system used.

Drawings

Fig. 1 is a schematic structural diagram of a modular power system using LNG as fuel according to an embodiment of the present invention.

Detailed Description

The following description of the preferred embodiment of the present invention will be given in detail with reference to the accompanying drawings 1, so as to better understand the functions and features of the present invention.

Referring to fig. 1, a modular power system using LNG as fuel according to an embodiment of the present invention includes a 40-foot container housing 1, and a fuel storage unit 2, a fuel preparation and supply unit 3, and a generator unit 4 disposed in the container housing 1; the fuel storage unit 2 is connected to the fuel preparation and supply unit 3, and the fuel preparation and supply unit 3 is connected to the generator set unit 4. The electric energy of 440V/60Hz (or 400V/50Hz) can be directly output.

The fuel storage unit 2 includes a vacuum pressure tank 21.

In this embodiment, the vacuum pressure tank 21 is a double-layer heat-insulating C-shaped tank, and the vacuum pressure tank 21 is cylindrical.

The vacuum pressure tank 21 is used for storing LNG fuel, the volume of the vacuum pressure tank determines the endurance capacity of the power unit, and the design volume is about 12m³. The fuel preparation and supply unit 3 is used for heating, vaporizing and pressurizing fuel, and supplies stable fuel based on the demand of the engine.

The diameter of the inner tank of the vacuum pressure tank 21 is 1.7m, and the total length is 5.7 m; the diameter of the outer tank is 2.0m, and the total length is 6 m.

In this embodiment, a fuel tank connection point (TCS) is provided at the top end of the vacuum pressure tank 21 for arranging the connection of the fuel line and the fuel preparation and supply unit 3.

The fuel preparation and supply unit 3 includes a pressure balancing unit 31, a gas evaporator 32 and a gas valve group unit 33; the fuel storage unit 2 is connected with the pressure balancing unit 31 and the gas evaporator 32 through pipelines, the gas evaporator 32 is connected with the gas valve bank unit 33 through pipelines, and the gas valve bank unit 33 is connected with the generator set unit 4 through a double-layer pipeline 5.

Different fuel equipment and supply devices are provided according to the fuel (LNG, LPG or methanol), and the system and the devices meet the requirements of engine manufacturers and specifications.

The double-layer pipeline 5 comprises an inner pipe and an outer pipe, the gas valve group unit 33 is connected with the generator set unit 4 through the inner pipe, and the outer pipe is sleeved outside the inner pipe; still include an exhaust system, exhaust system connects the outer tube and communicates with container shell 1's outside.

As a type 1 dangerous area, an air draft system is arranged for not less than 30 times per hour, and continuous air replacement is carried out. Meanwhile, the bolt type manhole cover is arranged at the position and used for the access of personnel during necessary maintenance and inspection, and the requirement of the specification is met.

The generator set unit 4 is a core power unit of the system and is used for converting chemical energy of the LNG fuel in the fuel storage unit 2 into electric energy and stably outputting the electric energy to an external power system.

The container shell 1 forms a generator set chamber 11, and the generator set unit 4 is arranged in the generator set chamber 11; and the two sides of the generator set room 11 are respectively provided with an inlet and outlet door for the access of maintenance personnel, and the inlet and outlet doors are provided with air inlet grilles for the entry of cooling air.

The generator set unit 4 comprises a natural gas fuel engine and an alternating current generator which are connected, and the natural gas fuel engine is connected with the gas valve set unit 33 through a double-layer pipeline 5.

The generator set unit 4 receives qualified and stable gas supply from the fuel preparation and supply unit 3, and outputs power torque to the alternating current generator after combustion work is done in the natural gas fuel engine, so as to output electric energy.

The natural gas fuel engine comprises an air cooling system which is communicated with the outside of the container shell 1 through a ventilation grille for exhausting air.

The generator set unit 4 is an independent system, external input cooling, lubricating oil and the like are not needed, an air cooling system is used for heat dissipation of the engine, an independent lubricating oil system is adopted, and heat of an internal cooling water system can be used for heating and evaporating fuel. Meanwhile, the internal air exhaust system of the fuel double-wall pipe surrounding space is arranged, and the standard requirement is met.

The embodiment of the utility model provides a modular power system taking LNG as fuel, which uses the design of a modular power unit taking LNG as fuel; and adopts the modular design of a standard container type; the power unit is an independent system, external energy input is not needed, and the heat of the internal system can be used for heating and evaporating the LNG fuel. In addition, the subdivision design is adopted, and the fuel storage unit 2, the fuel preparation and supply unit 3 and the generator set unit 4 are arranged in two independent spaces, so that the maximum safety and reliability are ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A modular power system taking LNG as fuel is characterized by comprising a container shell, a fuel storage unit, a fuel preparation and supply unit and a generator set unit, wherein the fuel storage unit, the fuel preparation and supply unit and the generator set unit are arranged in the container shell; the fuel storage unit is connected with the fuel preparation and supply unit, and the fuel preparation and supply unit is connected with the generator set unit.

2. The LNG-fueled modular power system according to claim 1, wherein the fuel storage unit comprises a vacuum pressure tank.

3. The LNG-fueled modular power system according to claim 2, wherein the vacuum pressure tank is a double insulated C-tank and is cylindrical.

4. The LNG-fueled modular power system according to claim 1, wherein the fuel preparation and supply unit comprises a pressure equalization unit, a gas vaporizer, and a gas valve block unit; the fuel storage unit is connected with the pressure balance unit and the gas evaporator through pipelines, the gas evaporator is connected with the gas valve group unit through pipelines, and the gas valve group unit is connected with the generator set unit through a double-layer pipeline.

5. The LNG-fueled modular power system according to claim 4, wherein the double-deck piping comprises an inner pipe and an outer pipe, the gas valve block unit is connected to the generator unit through the inner pipe, and the outer pipe is sleeved outside the inner pipe; still include an exhaust system, exhaust system connect the outer tube and with the outside intercommunication of container shell.

6. The LNG-fueled modular power system according to claim 5, wherein the generator set unit comprises a natural gas fueled engine and an alternator coupled to each other, the natural gas fueled engine being coupled to the gas valve block unit via the double pipe.

7. The LNG-fueled modular power system according to claim 6, wherein the natural gas fueled engine includes an air cooling system vented to the exterior of the container shell through a ventilation grille.

8. The LNG-fueled modular power system according to claim 6, wherein the container enclosure forms a generator set compartment, the generator set unit being disposed within the generator set compartment; and the two sides of the generator set chamber are respectively provided with an inlet and outlet door, and the inlet and outlet doors are provided with air inlet grids.

Images