Device for testing stability of marine ammonia fuel supply system not connected with ammonia fuel engine

Abstract

The utility model provides a testing device for the stability of a marine ammonia fuel supply system. The testing device comprises a pressure sensing device, a flow assembly, a control assembly, a heat exchange device and a liquid ammonia storage device, the heat exchange device is provided with an ammonia fuel channel; in the material conveying direction, the flow assembly, the control assembly, the ammonia fuel channel of the heat exchange device and the liquid ammonia storage device are sequentially connected through pipelines; an ammonia fuel supply system is connected between an outlet of the liquid ammonia storage device and an inlet of the flow assembly, and the pressure sensing device is arranged on a pipeline for connecting the ammonia fuel supply system and the flow assembly. Through the structural design, the stability of the ammonia fuel supply system can be tested under the condition that the ammonia fuel engine is not connected, the test process is greatly simplified, and the test efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of ammonia fuel supply systems, and relates to a testing device for the stability of a marine ammonia fuel supply system. Background Technology

[0002] With increasing global emphasis on environmental protection and greenhouse gas emission reduction, international and domestic regulations on ship emissions are becoming increasingly stringent. Improving energy efficiency indicators through energy-saving devices and ship design optimization is becoming increasingly limited. Conventional fuel-powered ships can only meet energy efficiency and carbon intensity targets by reducing speed and lowering the maximum continuous power point. However, increasingly lower speeds and maximum continuous power points cannot meet users' demands for short-duration high-speed voyages. Therefore, it is necessary to adopt green new energy sources to reduce ship carbon emissions and meet emission regulations.

[0003] Ammonia, as a zero-carbon emission fuel, boasts high energy density and ease of storage and transportation, making it a key fuel for the future shipping industry to replace carbon-based materials. However, the application of ammonia fuel on ships faces numerous challenges, with the stability and safety of the ammonia fuel supply system being among the critical factors.

[0004] In practical applications, ammonia fuel supply systems need to operate under long-term, high-load conditions on ships. Therefore, their performance needs to be tested and verified before installation. Comprehensive testing and verification of their performance is crucial. However, currently, there is a lack of dedicated platforms and standardized methods for performance testing and verification of ammonia fuel supply systems.

[0005] In summary, developing a testing device specifically for marine ammonia fuel supply systems, capable of simulating actual ship operating conditions, to test and inspect the performance indicators of the ammonia fuel supply system, provides strong technical support for the design, optimization, and application of ammonia fuel supply systems, and also promotes the application of ammonia fuel in ships. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a testing device for the stability of a marine ammonia fuel supply system. By using a pressure sensor, flow component, control component, heat exchanger, and liquid ammonia storage device in combination, the stability of the ammonia fuel supply system can be tested without connecting to an ammonia fuel engine, greatly simplifying the testing process and improving testing efficiency.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] This utility model provides a testing device for the stability of a marine ammonia fuel supply system. The testing device includes a pressure sensing device, a flow component, a control component, a heat exchange device, and a liquid ammonia storage device.

[0009] The heat exchange device is equipped with an ammonia fuel channel;

[0010] Along the material conveying direction, the flow component, control component, heat exchanger ammonia fuel channel and liquid ammonia storage device are connected in sequence through pipelines;

[0011] The outlet of the liquid ammonia storage device is connected to the inlet of the flow component via an ammonia fuel supply system, and the pressure sensing device is installed on the pipeline connecting the ammonia fuel supply system and the flow component.

[0012] In this utility model, the ammonia fuel supply system refers to the ammonia fuel supply equipment system; the internal structure of the ammonia fuel supply system is not specifically limited, as long as it can supply liquid ammonia and / or gaseous ammonia to the ammonia fuel engine, those skilled in the art can make specific settings according to actual needs.

[0013] The testing device provided by this utility model, through the combined use of a pressure sensing device, a flow component, a control component, a heat exchange device, and a liquid ammonia storage device, enables the testing of the stability of the ammonia fuel supply system without connecting to an ammonia fuel engine, greatly simplifying the testing process and improving testing efficiency.

[0014] It should be noted that, along the material conveying direction, the flow component, control component, ammonia fuel channel of the heat exchange device, and liquid ammonia storage device are connected sequentially through pipelines. An ammonia fuel supply system is connected between the outlet of the liquid ammonia storage device and the inlet of the flow component. A pressure sensor is installed on the pipeline connecting the ammonia fuel supply system and the flow component. This allows the testing device to change the downstream ammonia fuel flow rate through the control component (wherein the ammonia fuel flow rate can be calculated based on the load change of the simulated ammonia fuel engine), thereby triggering the ammonia fuel supply system to automatically follow the flow rate change and make automatic adjustments. Then, the stability of the output pressure of the ammonia fuel supply system is detected by the pressure sensor, thereby determining the stability of the ammonia fuel supply system.

[0015] It should also be noted that after the ammonia fuel flows from the liquid ammonia storage device through the ammonia fuel supply system and the flow component, the flow rate is regulated by the control component, and then it flows into the heat exchange device. After being cooled by the heat exchange device, the ammonia fuel flows out from the ammonia fuel outlet of the heat exchange device and returns to the liquid ammonia storage device. In the whole process, not only is zero loss of ammonia fuel achieved, but heat is also recovered.

[0016] As a preferred technical solution of this utility model, the flow component includes a flow meter.

[0017] As a preferred technical solution of this utility model, the control component includes a manual regulating valve or an electric regulating valve.

[0018] As a preferred technical solution of this utility model, the control component is used to regulate the flow rate of ammonia fuel flowing through the control component, thereby triggering the ammonia fuel supply system to automatically respond and adjust the output flow rate and / or output pressure of ammonia fuel.

[0019] As a preferred technical solution of this utility model, the heat exchange device is also provided with a cooling medium inlet and a cooling medium outlet independently.

[0020] As a preferred technical solution of this utility model, the liquid ammonia storage device includes a liquid ammonia storage tank.

[0021] As a preferred technical solution of this utility model, the testing device further includes an electrical control module.

[0022] As a preferred technical solution of this utility model, the electronic control module is electrically connected to the control component.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The testing device provided by this utility model, through the combined use of pressure sensing device, flow component, control component, heat exchange device and liquid ammonia storage device, enables the stability test of ammonia fuel supply system without connecting to ammonia fuel engine, greatly simplifying the testing process and improving testing efficiency;

[0025] (2) The test device provided by this utility model has a control component and a pressure sensing device installed between the outlet of the flow component and the ammonia fuel inlet of the heat exchange device on the pipeline connecting the ammonia fuel supply system and the flow component. This allows the test device to change the downstream ammonia fuel flow rate through the control component, thereby triggering the ammonia fuel supply system to automatically follow the flow rate change and make automatic adjustments. Then, the pressure sensing device is used to detect the stability of the output pressure of the ammonia fuel supply system, thereby realizing the determination of the stability of the ammonia fuel supply system. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the setup for testing the stability of the marine ammonia fuel supply system provided in Example 1.

[0027] Among them, 1-flow component, 2-control component, 3-heat exchange device, 4-pressure sensor device, 5-liquid ammonia storage device, 100-ammonia fuel supply system. Detailed Implementation

[0028] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] This utility model provides a testing device for the stability of a marine ammonia fuel supply system. The testing device includes a pressure sensing device, a flow component, a control component, a heat exchange device, and a liquid ammonia storage device.

[0031] The heat exchange device is equipped with an ammonia fuel channel;

[0032] Along the material conveying direction, the flow component, control component, heat exchanger ammonia fuel channel and liquid ammonia storage device are connected in sequence through pipelines;

[0033] The outlet of the liquid ammonia storage device is connected to the inlet of the flow component via an ammonia fuel supply system, and the pressure sensing device is installed on the pipeline connecting the ammonia fuel supply system and the flow component.

[0034] In this invention, the ammonia fuel supply system needs to automatically respond to changes in engine load (ammonia fuel consumption rate, i.e., ammonia fuel flow demand) during operation to ensure stable ammonia fuel inlet pressure. Therefore, the testing device provided by this invention can simulate load changes without connecting to the ammonia fuel engine, test and detect the flow supply stability of the ammonia fuel supply system, thereby providing strong technical support for the design, optimization, and application of the ammonia fuel supply system, and also promoting the application of ammonia fuel on ships.

[0035] In this invention, the pressure sensing device is used to monitor the pressure of the ammonia fuel output by the ammonia fuel supply system, thereby determining the stability of the ammonia fuel supply system.

[0036] In some embodiments of this invention, the flow component includes a flow meter.

[0037] In this invention, the flow component is used to monitor the flow rate of ammonia fuel output by the ammonia fuel supply system.

[0038] In some embodiments of this invention, the control component includes a manually adjustable valve or an electrically adjustable valve.

[0039] In some embodiments of this utility model, the control component is used to regulate the flow rate of ammonia fuel flowing through the control component, thereby triggering the ammonia fuel supply system to automatically respond and adjust the output flow rate and / or output pressure of ammonia fuel.

[0040] In this invention, the control component uses the constantly changing ammonia fuel consumption flow rate as the target flow rate, based on the engine's operating conditions, and compares it with the actual flow rate detected by the flow component. The control component then adjusts the actual ammonia fuel flow rate to match the target value, thereby simulating the changes in engine operating conditions.

[0041] In some embodiments of this utility model, the heat exchange device is further provided with a cooling medium inlet and a cooling medium outlet, respectively.

[0042] In this invention, because the ammonia fuel supply system requires a relatively high temperature to supply ammonia fuel, a heat exchange device is installed downstream of the control components to recover heat. The cooling medium includes water.

[0043] In some embodiments of this utility model, the liquid ammonia storage device includes a liquid ammonia storage tank.

[0044] In some embodiments of this utility model, the testing device further includes an electronic control module.

[0045] In some embodiments of this utility model, the electronic control module is electrically connected to the control component.

[0046] In this invention, the flow rate regulation of ammonia fuel can also be automatically achieved through an electronic control module. That is, the electronic control module sets the target flow rate, automatically adjusts the opening degree of the control component, and then measures the actual flow rate through the flow component and compares it with the target flow rate. If the two are inconsistent, the opening degree of the control component is changed through PID control to achieve automatic flow rate regulation until the actual measured flow rate is consistent with the target set flow rate.

[0047] This utility model also provides a testing method using the aforementioned testing device, the testing method comprising the following steps:

[0048] After the ammonia fuel flows from the liquid ammonia storage device through the ammonia fuel supply system, the flow rate is measured by the flow component. At the same time, the pressure sensor detects the output pressure of the ammonia fuel supply system. Then, the flow rate through the control component is adjusted, which triggers the ammonia fuel supply system to automatically respond and adjust parameters such as ammonia fuel flow rate and pressure. The ammonia fuel flowing out of the control component flows into the heat exchange device and is cooled. Then, it flows out from the ammonia fuel outlet of the heat exchange device and returns to the liquid ammonia storage tank.

[0049] The control component uses the constantly changing fuel consumption flow rate as the target flow rate, based on the engine's operating conditions, and compares it with the actual flow rate detected by the flow component. It then adjusts the actual ammonia fuel flow rate to match the target value, thus simulating changes in engine operating conditions. The tested ammonia fuel supply system automatically responds to system pressure changes caused by fuel flow rate variations, automatically adjusting both flow rate and pressure. A pressure sensor detects the stability of the ammonia fuel supply system's output pressure, enabling performance testing of the ammonia fuel supply system.

[0050] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0051] Example 1

[0052] This embodiment provides a testing device for the stability of a marine ammonia fuel supply system (such as...). Figure 1 As shown in the figure, the testing device includes a pressure sensing device 4, a flow component 1, a control component 2, a heat exchange device 3, and a liquid ammonia storage device 5.

[0053] The heat exchange device 3 is provided with an ammonia fuel channel; the heat exchange device 3 is also provided with a cooling water inlet and a cooling water outlet independently.

[0054] Along the material conveying direction, the ammonia fuel channel of the flow component 1, the control component 2, the heat exchange device 3, and the liquid ammonia storage device 5 are connected in sequence by pipelines.

[0055] The outlet of the liquid ammonia storage device 5 is connected to the inlet of the flow component 1 via an ammonia fuel supply system 100, and the pressure sensing device 4 is installed on the pipeline connecting the ammonia fuel supply system 100 and the flow component 1.

[0056] The flow component 1 is a flow meter; the liquid ammonia storage device 5 is a liquid ammonia storage tank;

[0057] The control component 2 is a manual regulating valve; the control component 2 is used to regulate the flow rate of ammonia fuel flowing through the control component, thereby triggering the ammonia fuel supply system to automatically respond and regulate the output flow rate and / or output pressure of ammonia fuel.

[0058] The testing apparatus provided in this embodiment utilizes a pressure sensor, a flow component, a control component, a heat exchanger, and a liquid ammonia storage device. Specifically, a control component is installed between the outlet of the flow component and the ammonia fuel inlet of the heat exchanger, and a pressure sensor is installed on the pipeline connecting the ammonia fuel supply system and the flow component. This allows the testing apparatus to control changes in the downstream ammonia fuel flow rate, triggering the ammonia fuel supply system to automatically adjust accordingly. The pressure sensor then detects the stability of the ammonia fuel supply system's output pressure, thereby determining the stability of the ammonia fuel supply system. This testing apparatus enables stability testing of the ammonia fuel supply system without connecting to an ammonia fuel engine, significantly simplifying the testing process and improving testing efficiency.

[0059] Example 2

[0060] This embodiment provides a testing device for the stability of a marine ammonia fuel supply system. The testing device includes a pressure sensing device, a flow component, a control component, a heat exchange device, and a liquid ammonia storage device.

[0061] The heat exchanger is equipped with an ammonia fuel channel; the heat exchanger is also independently equipped with a cooling water inlet and a cooling water outlet.

[0062] Along the material conveying direction, the flow component, control component, heat exchanger ammonia fuel channel and liquid ammonia storage device are connected in sequence through pipelines;

[0063] The outlet of the liquid ammonia storage device is connected to the inlet of the flow component through an ammonia fuel supply system, and the pressure sensing device is installed on the pipeline connecting the ammonia fuel supply system and the flow component.

[0064] The flow component is a flow meter; the liquid ammonia storage device is a liquid ammonia storage tank.

[0065] The control component is an electric regulating valve; the control component is used to regulate the flow rate of ammonia fuel flowing through the control component, thereby triggering the ammonia fuel supply system to automatically respond and regulate the output flow rate and / or output pressure of ammonia fuel;

[0066] The testing device also includes an electrical control module; the electrical control module is electrically connected to the control components.

[0067] The testing apparatus provided in this embodiment, by adding an electronic control module and setting the control component as an electric regulating valve, allows the ammonia fuel flow rate to be automatically adjusted by the electronic control module. This automatic adjustment of the control component's opening degree provides flexibility in parameter adjustment. The testing apparatus enables the testing of the stability of the ammonia fuel supply system without connecting to an ammonia fuel engine, significantly simplifying the testing process and improving testing efficiency.

[0068] Comparative Example 1

[0069] This comparative example provides a testing device for the stability of a marine ammonia fuel supply system, which, in addition to adjusting the position of the control component, involves placing the control component on the pipeline between the ammonia fuel outlet of the heat exchange device and the inlet of the liquid ammonia storage device.

[0070] The test apparatus provided in this comparative example, when the control component is placed between the heat exchange device and the liquid ammonia storage device, not only leads to a decrease in the flow regulation accuracy of the control component, but also has the problem of flow control lag. Furthermore, because the control component cannot adjust the flow rate of the fluid entering the heat exchange device in a timely manner, it leads to a decrease in the heat exchange efficiency of the heat exchanger.

[0071] The applicant declares that the above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A testing apparatus for the stability of a marine ammonia fuel supply system not connected to an ammonia fuel engine, characterized in that, The testing device includes a pressure sensor, a flow component, a control component, a heat exchanger, and a liquid ammonia storage device. The heat exchange device is equipped with an ammonia fuel channel; Along the material conveying direction, the flow component, control component, heat exchange device ammonia fuel channel and liquid ammonia storage device are connected in sequence through pipelines; The outlet of the liquid ammonia storage device is connected to the inlet of the flow component, which is connected to the ammonia fuel supply system of the system under test. The pressure sensing device is installed on the pipeline connecting the ammonia fuel supply system and the flow component to detect the stability of the output pressure of the ammonia fuel supply system. The control component is used to regulate the flow rate of ammonia fuel flowing through the control component, thereby triggering the ammonia fuel supply system to automatically respond and adjust the output flow rate and / or output pressure of ammonia fuel.

2. The testing apparatus for the stability of a marine ammonia fuel supply system according to claim 1, characterized in that, The flow component includes a flow meter.

3. The testing apparatus for the stability of a marine ammonia fuel supply system according to claim 1, characterized in that, The control components include a manually adjustable valve or an electrically adjustable valve.

4. The testing apparatus for the stability of a marine ammonia fuel supply system according to claim 1, characterized in that, The heat exchange device is also independently equipped with a cooling medium inlet and a cooling medium outlet.

5. The testing apparatus for the stability of a marine ammonia fuel supply system according to claim 1, characterized in that, The liquid ammonia storage device includes a liquid ammonia storage tank.

6. The testing apparatus for the stability of a marine ammonia fuel supply system according to claim 1, characterized in that, The testing device also includes an electrical control module.

7. The testing apparatus for the stability of a marine ammonia fuel supply system according to claim 6, characterized in that, The electronic control module is electrically connected to the control components.

Images