Fuel power module and low-pressure SCR system

Abstract

The invention relates to the technical field of ships, in particular to a fuel power module and a low-pressure SCR system. A fuel oil power module in the low-pressure SCR system comprises a fuel oil storage cabin, a driving pump, an incinerator, an afterburner, a combined oil supply cabinet and a conveying pipeline, the fuel oil storage cabin is used for storing fuel oil and serves as a material supply source of an existing power supply system of a ship, the driving pump is an emergency standby pump of the existing power supply system of the ship, and the incinerator is connected with the afterburner. The fuel oil storage cabin, the driving pump and the input end of the combined oil supply cabinet are sequentially connected in series through a conveying pipeline, the incinerator and the afterburner are connected in parallel through the output end of the oil supply cabinet through the conveying pipeline, fuel oil can be independently conveyed to the incinerator and the afterburner through the oil supply cabinet, the incinerator is used for incinerating waste, and the afterburner is used for increasing the temperature of tail gas. The existing structure of the ship is fully utilized, unnecessary configuration is reduced, the ship structure can be optimized, space can be saved, the space utilization rate of the ship can be improved, and the manufacturing cost of the ship can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a fuel power module and a low-pressure SCR system. Background Art

[0002] The SCR (Selective Catalytic Reduction) system can treat particulate matter and NOx in the exhaust gas of ships, thereby effectively reducing the impact on the environment. In the related art, the SCR system includes a low-pressure SCR system and a high-pressure SCR system. The main difference between the low-pressure SCR system and the high-pressure SCR system lies in the installation position of the SCR reactor. In the low-pressure SCR system, the temperature of the exhaust gas entering the reactor is relatively low. Therefore, the low-pressure SCR system needs to be provided with a supplementary combustor to increase the temperature to ensure the treatment effect of the exhaust gas.

[0003] In the prior art, for the fuel supply in the low-pressure SCR system, a corresponding daily-use cabinet and a driving pump need to be separately equipped for the supplementary combustor for fuel supply, which occupies a large space. However, the space on the ship is small, which greatly reduces the space utilization rate on the ship, and the separate provision of the daily-use cabinet and the driving pump increases the manufacturing cost of the ship.

[0004] Therefore, it is urgent to invent a fuel power module and a low-pressure SCR system to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a fuel power module and a low-pressure SCR system to improve the space utilization rate of the ship and reduce the manufacturing cost.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The fuel power module includes:

[0008] A fuel storage tank for storing fuel, and the fuel storage tank is a feed source for the existing power supply system of the ship;

[0009] A driving pump, and the driving pump is an emergency standby pump for the existing power supply system of the ship;

[0010] An incinerator, a supplementary combustor, a combined oil supply cabinet, and a conveying pipeline;

[0011] The input ends of the fuel storage tank, the driving pump, and the combined oil supply cabinet are sequentially connected in series through the conveying pipeline, and the output end of the combined oil supply cabinet connects the incinerator and the supplementary combustor in parallel through the conveying pipeline;

[0012] The combined fuel supply tank can separately supply fuel to the incinerator and the afterburner. The incinerator is used for incinerating garbage, and the afterburner is used to increase the temperature of the exhaust gas.

[0013] As an alternative, the conveying pipeline includes:

[0014] A first conveying section having two first connection ends, and the two first connection ends are respectively communicated with the fuel storage tank and the input end of the driving pump;

[0015] A second conveying section having two second connection ends, and the two second connection ends are respectively communicated with the output end of the driving pump and the input end of the combined fuel supply tank; and

[0016] A third conveying section having three third connection ends, and the three third connection ends are respectively communicated with the output end of the combined fuel supply tank, the input end of the incinerator, and the input end of the afterburner.

[0017] As an alternative, a first valve is provided on the first conveying section, and the first valve is used to control the conduction and cut-off between the fuel storage tank and the first conveying section.

[0018] As an alternative, a second valve is further provided on the first conveying section, and the second valve is used to control the conduction and cut-off between the first conveying section and the driving pump.

[0019] As an alternative, both the first valve and the second valve are quick closing valves.

[0020] As an alternative, the fuel power module further includes:

[0021] A pressure gauge installed on the conveying pipeline, and the pressure gauge is used to detect the fuel pressure in the conveying pipeline.

[0022] As an alternative, the fuel power module further includes:

[0023] A flow meter installed on the conveying pipeline, and the flow meter is used to detect the fuel flow in the conveying pipeline.

[0024] As an alternative, the vertical heights of the combined fuel supply tank, the incinerator, and the fuel storage tank decrease in sequence, and the vertical height of the afterburner is the same as that of the incinerator.

[0025] As an alternative, the fuel power module further includes:

[0026] A liquid level detection component is provided at the combined fuel supply tank. The liquid level detection component is used to detect the liquid level height of the fuel in the combined fuel supply tank. The fuel power module further includes a controller, which is communicatively connected to the liquid level detection component and the driving pump respectively. The controller can control the start and stop of the driving pump.

[0027] A low-pressure SCR system includes a reaction module, a mixing module, and the fuel power module as described above. The fuel power module can provide power for the mixing module. The mixing module is used to heat the mixed exhaust gas and reductant. The mixing module is located at the front end of the reaction module. The reaction module is configured to receive the mixed exhaust gas and reductant and perform a selective catalytic reduction reaction with nitrogen oxides.

[0028] Advantages of the present invention:

[0029] The fuel power module provided by the present invention connects the fuel storage tank, the driving pump, and the input end of the combined fuel supply tank in series in sequence through a delivery pipeline, and connects the incinerator and the afterburner in parallel with the output end of the combined fuel supply tank through a delivery pipeline, ensuring that the combined fuel supply tank can separately supply fuel to the incinerator and the afterburner through the delivery pipeline, realizing the delivery of fuel among the fuel storage tank, the incinerator, and the afterburner. By making the fuel storage tank the feeding source of the existing power supply system of the ship and the driving pump the emergency standby pump of the existing power supply system of the ship, the existing structure of the ship is fully utilized, unnecessary configurations are reduced. It can not only optimize the ship structure, save space, improve the space utilization rate of the ship, but also reduce the manufacturing cost of the ship. By using the combined fuel supply tank to separately supply fuel to the incinerator and the afterburner respectively, compared with separately equipping a daily use tank for the incinerator and the afterburner in the prior art, unnecessary configurations within the ship can be further reduced. In addition, the rated flow rate of the emergency standby pump of the existing power supply system of the ship is usually small, that is, the rated flow rate of the driving pump is usually small. When the driving pump drives the fuel from the fuel storage tank to the combined fuel supply tank, slow and stable delivery of the fuel can be achieved.

[0030] The present invention also provides a low-pressure SCR system. By applying the above fuel power module, it can not only optimize the ship structure, save space, improve the space utilization rate of the ship, but also reduce the manufacturing cost of the ship. Brief Description of the Drawings

[0031] Figure 1 It is a schematic structural diagram of the fuel power module provided in Embodiment 1 of the present invention.

[0032] In the figure:

[0033] 100, fuel storage tank; 200, incinerator; 300, afterburner; 400, combined oil supply tank; 500, conveying pipeline; 510, first valve; 520, second valve; 530, third valve; 540, fourth valve; 550, fifth valve; 560, sixth valve; 570, seventh valve; 600, driving pump; 700, pressure gauge; 800, flow meter. Detailed implementation manners

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all structures.

[0035] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the top of", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the bottom of", and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0037] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] The SCR (Selective Catalytic Reduction) system can treat particulate matter and NOx in the exhaust gas emitted by ships, thereby effectively reducing the impact on the environment. In related technologies, the SCR system includes a low-pressure SCR system and a high-pressure SCR system. The main difference between the low-pressure SCR system and the high-pressure SCR system lies in the installation position of the SCR reactor. In the low-pressure SCR system, the temperature of the exhaust gas entering the reactor is relatively low. Therefore, a supplementary combustor needs to be set up in the low-pressure SCR system to increase the temperature to ensure the treatment effect of the exhaust gas.

[0039] In the prior art, for the fuel supply in the low-pressure SCR system, a corresponding daily-use tank and a driving pump need to be separately equipped for the supplementary combustor for fuel supply, which occupies a large space. However, the space on the ship is small, greatly reducing the space utilization rate on the ship. Moreover, the separate equipped daily-use tank and driving pump increase the manufacturing cost of the ship.

[0040] To solve the above problems, as Figure 1 shown, this embodiment provides a fuel power module. The fuel power module includes a fuel storage tank 100, an incinerator 200, a supplementary combustor 300, a combined fuel supply tank 400, a conveying pipeline 500, and a driving pump 600. Among them, the fuel storage tank 100 is used to store fuel. The fuel storage tank 100 is the fuel supply source of the existing power supply system of the ship. The driving pump 600 is the emergency standby pump of the existing power supply system of the ship. The input ends of the fuel storage tank 100, the driving pump 600, and the combined fuel supply tank 400 are connected in series in sequence through the conveying pipeline 500. The output end of the combined fuel supply tank 400 connects the incinerator 200 and the supplementary combustor 300 in parallel through the conveying pipeline 500. The combined fuel supply tank 400 can separately supply fuel to the incinerator 200 and the supplementary combustor 300. The incinerator 200 is used to incinerate garbage, and the supplementary combustor 300 is used to increase the temperature of the exhaust gas.

[0041] The fuel power module connects the fuel storage tank 100, the driving pump 600, and the input end of the combined oil supply tank 400 in series in turn by using the conveying pipeline 500, and connects the incinerator 200 and the afterburner 300 in parallel with the output end of the combined oil supply tank 400 by using the conveying pipeline 500, ensuring that the combined oil supply tank 400 can separately supply fuel to the incinerator 200 and the afterburner 300 through the conveying pipeline 500, realizing the conveyance of fuel among the fuel storage tank 100, the incinerator 200, and the afterburner 300. By making the fuel storage tank 100 the feeding source of the existing power supply system of the ship and the driving pump 600 the emergency standby pump of the existing power supply system of the ship, the existing structure of the ship is fully utilized, unnecessary configurations are reduced, not only can the ship structure be optimized, space be saved, and the space utilization rate of the ship be improved, but also the manufacturing cost of the ship can be reduced. By using the combined oil supply tank 400 to separately supply fuel to the incinerator 200 and the afterburner 300 respectively, compared with the prior art of separately equipping a daily use tank for the incinerator 200 and the afterburner 300 respectively, unnecessary configurations within the ship can be further reduced. In addition, the rated flow rate of the emergency standby pump of the existing power supply system of the ship is usually small, that is, the rated flow rate of the driving pump 600 is usually small. When the driving pump 600 drives the fuel to be conveyed from the fuel storage tank 100 to the combined oil supply tank 400, slow and stable conveyance of the fuel can be achieved.

[0042] Specifically, the vertical heights of the combined oil supply tank 400, the incinerator 200, and the fuel storage tank 100 decrease in turn, and the vertical height of the afterburner 300 is the same as that of the incinerator 200. By making the vertical heights of the combined oil supply tank 400, the incinerator 200, and the fuel storage tank 100 decrease in turn and ensuring that the vertical height of the incinerator 200 is the same as that of the afterburner 300, after the fuel is conveyed from the fuel storage tank 100 to the combined oil supply tank 400, the fuel can be conveyed to the incinerator 200 and the afterburner 300 by using the gravity of the fuel itself, improving the controllability during the process of conveying the fuel.

[0043] In this embodiment, the conveying pipeline 500 includes a first conveying section, a second conveying section, and a third conveying section. Among them, the first conveying section has two first connection ends, and the two first connection ends are respectively connected to the fuel storage tank 100 and the input end of the driving pump 600. The second conveying section has two second connection ends, and the two second connection ends are respectively connected to the output end of the driving pump 600 and the input end of the combined fuel supply tank 400. The third conveying section has three third connection ends, and the three third connection ends are respectively connected to the output end of the combined fuel supply tank 400, the input end of the incinerator 200, and the input end of the afterburner 300. By splitting the conveying pipeline 500 into the first conveying section, the second conveying section, and the third conveying section, using the first conveying section to connect the fuel storage tank 100 and the input end of the driving pump 600, the second conveying section to connect the output end of the driving pump 600 and the input end of the combined fuel supply tank 400, and the third conveying section to connect the output end of the combined fuel supply tank 400, the input end of the incinerator 200, and the output end of the afterburner 300, the rapid assembly and disassembly of the fuel power module can be achieved, and the maintenance and repair efficiency of the fuel power module can be improved subsequently.

[0044] As an optional solution, a first valve 510 is provided on the first conveying section. The first valve 510 is used to control the conduction and interruption between the fuel storage tank 100 and the first conveying section. By using the first valve 510 to control the conduction and interruption between the fuel storage tank 100 and the first conveying section, when the fuel storage tank 100 leaks or the cabin catches fire, the first valve 510 can be closed to cut off the fuel delivery between the fuel storage tank 100 and the driving pump 600, improving safety.

[0045] In addition, a second valve 520 is also provided on the first conveying section. The second valve 520 is used to control the conduction and interruption between the first conveying section and the driving pump 600. On the basis that the first valve 510 cuts off the connection between the fuel storage tank 100 and the first conveying section, using the second valve 520 to cut off the connection between the first conveying section and the input end of the driving pump 600 can further improve the safety of the fuel power module.

[0046] To improve the switching efficiency of the first valve 510 and the second valve 520, both the first valve 510 and the second valve 520 are quick-closing valves.

[0047] It should be noted that, in this embodiment, the second connection section is provided with a third valve 530 for controlling the conduction and blockage between the output end of the driving pump 600 and the second connection section, and a fourth valve 540 for controlling the conduction and blockage between the second connection section and the input end of the combined fuel supply tank 400. The third connection section is provided with a fifth valve 550 for controlling the conduction and blockage between the output end of the combined fuel supply tank 400 and the third connection section, a sixth valve 560 for controlling the conduction and blockage between the third connection section and the input end of the incinerator 200, and a seventh valve 570 for controlling the conduction and blockage between the third connection section and the input end of the afterburner 300. The third valve 530, the fourth valve 540, the fifth valve 550, the sixth valve 560, and the seventh valve 570 are all quick closing valves.

[0048] As an alternative solution, the fuel power module further includes a flow meter 800. The flow meter 800 is installed on the first connection section and is used to detect the fuel flow rate in the first connection section. By providing the flow meter 800 on the first connection section, accurate measurement of the volume of fuel transported from the fuel storage tank 100 can be achieved, facilitating subsequent determination of whether there is fuel leakage in the fuel power module based on the fuel transport volume. It should be noted that, in other embodiments, the flow meter 800 can also be provided on the second connection section, on the third connection section, or simultaneously on the first connection section, the second connection section, and the third connection section. This embodiment does not make specific limitations. The specific structure and working principle of the flow meter 800 both belong to the prior art and will not be elaborated here.

[0049] In an alternative embodiment, the fuel power module further includes a pressure gauge 700. The pressure gauge 700 is installed on the second connection section and is used to detect the fuel pressure in the second connection section. By providing the pressure gauge 700 on the second connection section, accurate detection of the fuel pressure in the second connection section can be achieved, further improving the safety of fuel transportation. In other embodiments, the pressure gauge 700 can also be provided on the first connection section, on the third connection section, or simultaneously on the first connection section, the second connection section, and the third connection section. This embodiment does not make specific limitations. The specific structure and working principle of the pressure gauge 700 both belong to the prior art and will not be elaborated here.

[0050] In some embodiments, the fuel power module further includes a liquid level detector (not shown in the figure), which is disposed at the combined fuel supply tank 400 and is used to detect the liquid level height of the fuel in the combined fuel supply tank 400. The fuel power module further includes a controller, which is communicatively connected to the liquid level detector and the driving pump 600 respectively. The controller is capable of controlling the start and stop of the driving pump 600. By providing the liquid level detector to detect the liquid level height of the fuel in the combined fuel supply tank 400 to determine whether the fuel in the combined fuel supply tank 400 is full, when the fuel in the combined fuel supply tank 400 is full, the liquid level detector transmits the detection information to the controller, and the controller controls the driving pump 600 to stop working according to the detection information of the liquid level detector. When the liquid level detector detects that the liquid level height of the fuel in the combined fuel supply tank 400 is lower than the set preset height, the liquid level detector transmits the detection information to the controller, and the controller controls the driving pump 600 to start to replenish fuel into the combined fuel supply tank 400. It should be noted that the specific structures and working principles of the liquid level detector and the controller both belong to the prior art and will not be elaborated here.

[0051] Embodiment 2

[0052] This embodiment provides a low-pressure SCR system. The low-pressure SCR system includes a reaction module, a mixing module, and the above-mentioned fuel power module. The fuel power module is capable of providing power for the mixing module, and the mixing module is used to heat the mixed exhaust gas and the reducing agent. The mixing module is located at the front end of the reaction module, and the reaction module is configured to receive the mixed exhaust gas and the reducing agent and perform a selective catalytic reduction reaction with nitrogen oxides.

[0053] By applying the above-mentioned fuel power module, the low-pressure SCR system can not only optimize the ship structure, save space, and improve the space utilization rate of the ship, but also reduce the manufacturing cost of the ship.

[0054] It should be noted that the specific structures and working principles of the reaction module and the mixing module both belong to the prior art and will not be elaborated here.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Fuel power module, characterized in that: include: A fuel storage tank (100) is used to store fuel, and the fuel storage tank (100) is a fuel supply source for an existing power supply system of the ship; A driving pump (600), wherein the driving pump (600) is an emergency standby pump of an existing power supply system of the ship; An incinerator (200), an afterburner (300), an oil supply cabinet (400) and a delivery pipeline (500); The fuel storage tank (100), the driving pump (600) and the input end of the combined fuel supply cabinet (400) are sequentially connected in series via the delivery pipeline (500), and the output end of the combined fuel supply cabinet (400) connects the incinerator (200) and the afterburner (300) in parallel via the delivery pipeline (500); The combined oil supply cabinet (400) can independently deliver oil to the incinerator (200) and the afterburner (300); the incinerator (200) is used to incinerate garbage, and the afterburner (300) is used to increase the temperature of exhaust gas.

2. The fuel power module according to claim 1, characterized in that: The delivery pipeline (500) comprises: A first conveying section having two first connecting ends, wherein the two first connecting ends are respectively connected to the fuel storage tank (100) and an input end of the driving pump (600); A second conveying section has two second connecting ends, the two second connecting ends are respectively connected to the output end of the driving pump (600) and the input end of the combined oil supply cabinet (400); and The third conveying section has three third connecting ends, and the three third connecting ends are respectively connected to the output end of the combined oil supply cabinet (400), the input end of the incinerator (200), and the input end of the afterburner (300).

3. The fuel power module according to claim 2, characterized in that: The first conveying section is provided with a first valve (510), and the first valve (510) is used to control the connection and isolation between the fuel storage tank (100) and the first conveying section.

4. The fuel power module according to claim 3, characterized in that: The first conveying section is also provided with a second valve (520), and the second valve (520) is used to control the connection and disconnection between the first conveying section and the driving pump (600).

5. The fuel power module according to claim 4, characterized in that: The first valve (510) and the second valve (520) are both fast-closing valves.

6. The fuel power module according to claim 1, characterized in that: The fuel power module also includes: A pressure gauge (700) is installed on the delivery pipeline (500), and the pressure gauge (700) is used to detect the fuel pressure in the delivery pipeline (500).

7. The fuel power module according to claim 1, characterized in that: The fuel power module also includes: A flow meter (800) is installed on the delivery pipeline (500), and the flow meter (800) is used to detect the fuel flow in the delivery pipeline (500).

8. The fuel power module according to claim 1, characterized in that: The vertical heights of the combined oil supply cabinet (400), the incinerator (200), and the fuel oil storage tank (100) decrease in sequence, and the vertical height of the afterburner (300) is the same as the vertical height of the incinerator (200).

9. The fuel power module according to claim 1, characterized in that: The fuel power module also includes: A liquid level detection component is arranged at the combined oil supply cabinet (400), and is used to detect the liquid level height of the fuel in the combined oil supply cabinet (400). The fuel power module also includes a controller, and the controller is respectively connected to the liquid level detection component and the drive pump (600) for communication, and the controller can control the start and stop of the drive pump (600).

10. Low-pressure SCR system, characterized in that: It comprises a reaction module, a mixing module and a fuel power module as described in any one of claims 1 to 9, wherein the fuel power module can provide power for the mixing module, the mixing module is used to heat the mixed exhaust gas and reducing agent, the mixing module is located at the front end of the reaction module, and the reaction module is configured to receive the mixed exhaust gas and reducing agent and to undergo a selective catalytic reduction reaction with nitrogen oxides.

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