A method and system for controlling refueling of a methanol refueling station

Abstract

The application provides a methanol filling control method and system for a methanol filling station, determines a pipeline structure distribution requiring methanol filling of the methanol filling station, designs a drying inertization strategy for the pipeline based on the pipeline structure distribution, guarantees effectiveness and accuracy of the obtained drying inertization strategy, carries out drying inertization on the pipeline according to the drying inertization strategy, detects a pipeline composition after the drying inertization, provides a dry pipeline environment for safe methanol filling, determines a methanol filling strategy for the pipeline according to the filling requirements in combination with the pipeline structure distribution after determining that the pipeline composition meets the filling requirements, guarantees accuracy of methanol fuel filling, carries out methanol fuel filling on the pipeline by using the methanol filling station according to the methanol filling strategy, monitors the methanol fuel filling process, carries out early warning and strategy real-time adjustment according to the monitoring data, and guarantees accuracy and safety of the methanol fuel filling process.

Description

Technical Field

[0001] This invention relates to the field of methanol refueling technology, and in particular to a refueling control method and system for a methanol filling and refueling station. Background Technology

[0002] Currently, clean energy sources, such as methanol fuel, are increasingly being chosen for ship fuel systems. Methanol fuel is a new type of clean fuel made by blending methanol with denatured alcohol additives and existing national standard gasoline and diesel fuel in a certain volume or mass ratio using a strict scientific process. On the one hand, methanol can replace traditional fuels, such as diesel, which can significantly reduce ship emissions and environmental pollution. On the other hand, it can also be used in ship propulsion systems. Compared with traditional internal combustion engine propulsion systems, it has the characteristics of high efficiency and low emissions. Therefore, methanol has become one of the important means for the shipping industry to achieve emission reduction and environmental protection.

[0003] Methanol refueling is an essential step before the use of methanol fuel. Methanol is a colorless, clear liquid with an irritating odor. It is flammable, toxic, and highly volatile. Therefore, all pipelines should be dried and inertized before refueling. The accuracy and safety of the methanol refueling process are of paramount importance and are issues that researchers in this field have been studying. Summary of the Invention

[0004] This invention provides a method and system for controlling the filling of methanol at a methanol filling and refueling station, in order to solve the problems mentioned in the background art.

[0005] A method for controlling the filling of methanol at a methanol filling and refueling station includes:

[0006] S1: Determine the pipeline structure distribution that requires methanol filling and refueling stations for methanol refueling, and design a drying and inerting strategy for the pipelines based on the pipeline structure distribution.

[0007] S2: Dry and inert the pipeline according to the drying and inertization strategy, and then detect the pipeline composition after drying and inertization;

[0008] S3: After determining that the pipeline composition meets the filling requirements, determine the methanol filling strategy for the pipeline according to the filling requirements and in combination with the pipeline structure distribution;

[0009] S4: In accordance with the methanol refueling strategy, methanol filling and refueling stations are used to refuel the pipeline with methanol fuel, and the methanol fuel refueling process is monitored. Early warnings and real-time adjustments to the strategy are made based on the monitoring data.

[0010] Preferably, in step S1, determining the pipeline structure distribution for methanol refueling at the methanol filling and refueling station includes:

[0011] Obtain the pipeline routes for methanol filling and refueling stations, and establish a pipeline distribution map based on the pipeline routes;

[0012] Obtain the pipeline connection nodes of the pipeline route, and mark the connection points on the pipeline distribution map based on the pipeline connection nodes;

[0013] Obtain the pressure sensor detection locations along the pipeline route, and mark the detection points on the pipeline distribution map based on the pressure sensor detection locations;

[0014] Obtain the valve positions along the pipeline route, and mark the switch points on the pipeline distribution map based on the valve positions;

[0015] Based on the connection point markings, detection point markings, and switch point markings on the pipeline distribution map, the pipeline structure distribution is obtained.

[0016] Preferably, based on the pipeline structure distribution, a drying and inerting strategy for the pipeline is designed, including:

[0017] The drying and inerting conveying direction is determined based on the connection point marking results of the pipeline structure distribution; the drying and inerting control point is determined based on the switch point marking results; and the drying and inerting detection point is obtained based on the detection point marking results.

[0018] Based on the drying and inerting conveying direction and the drying and inerting control points, and in combination with the drying and inerting requirements, various control parameters of the main control point in the drying and inerting control points are determined, and the control parameters of other control points corresponding to the various control parameters of the main control point are also determined.

[0019] Based on multiple control parameters of the main control point and control parameters of other control points, multiple initial drying and inertization strategies are generated.

[0020] Data is collected from pipelines using a multi-type data acquisition platform to obtain pipeline data, and a digital twin pipeline model is generated based on the pipeline data.

[0021] Based on the digital twin pipeline model and combined with the drying and inertization detection points, the multiple initial drying and inertization strategies are simulated to obtain the detection parameters corresponding to each initial drying and inertization strategy.

[0022] Establish the correspondence between the initial drying and inerting strategy and the detection parameters, and build a database of strategy simulation results based on the correspondence;

[0023] Based on drying and inerting efficiency and drying and inerting quality, an optimization strategy model for the pipeline is set up. The database of simulation results of the strategy is connected with the optimization strategy model. Based on the optimization strategy model, the initial drying and inerting strategy is optimized to obtain multiple optimized drying and inerting strategies.

[0024] Obtain the theoretical drying and inerting efficiency and theoretical drying and inerting quality for each optimized drying and inerting strategy, and determine the first proportion of drying and inerting efficiency and the second proportion of theoretical drying and inerting quality based on the drying and inerting requirements;

[0025] Based on the theoretical drying and inerting efficiency and theoretical drying and inerting quality, and combining the first and second proportions, a comprehensive score is determined for each optimized drying and inerting strategy. The optimized drying and inerting strategy with the highest score is selected as the final drying and inerting strategy for the pipeline.

[0026] Preferably, the pipeline is dried and inerted according to a drying and inerting strategy, and the pipeline composition is detected after drying and inerting, including:

[0027] The drying and inerting instructions for the pipeline are determined based on the drying and inerting strategy, and the pipeline is dried and inerted according to the drying and inerting instructions.

[0028] After drying and inerting are completed, obtain the actual pressure test value of the pipeline;

[0029] Determine whether the actual pressure detection value is within the range of the ideal pressure detection value;

[0030] If so, confirm that the pipeline composition meets the requirements for methanol refueling;

[0031] Otherwise, it is determined that the pipeline composition does not meet the requirements for methanol refueling.

[0032] Preferably, in step S3, after determining that the pipeline composition meets the refueling requirements, a methanol refueling strategy for the pipeline is determined according to the refueling requirements and in conjunction with the pipeline structure distribution, including:

[0033] The methanol fuel refueling quantity and time range are obtained from the refueling requirements. Combined with the pipeline structure distribution, the methanol refueling rate and flow rate for the pipeline are determined.

[0034] Based on the structure, length, and diameter of the pipeline, combined with the methanol filling rate and flow rate, the rotational speed of the methanol supply pump is determined.

[0035] Based on the valve setting point of the pipeline, combined with the methanol injection rate and methanol injection flow rate, the valve opening degree of the pipeline is determined;

[0036] Based on the speed of the methanol refueling supply pump and the valve opening of the pipeline, a methanol refueling strategy for the pipeline is determined.

[0037] Preferably, determining the methanol injection strategy for the pipeline based on the rotational speed of the methanol injection supply pump and the valve opening of the pipeline includes:

[0038] Determine whether the speed of the methanol refueling supply pump is less than the preset speed threshold;

[0039] If so, confirm that the methanol refueling supply pump is operating normally.

[0040] Otherwise, determine that the methanol refueling supply pump cannot operate normally, and set the methanol refueling supply pump speed to the preset speed threshold.

[0041] If it is determined that the methanol supply pump can operate normally, the methanol supply pump speed and the valve opening of the pipeline are determined as the methanol supply strategy for the pipeline.

[0042] If the speed of the methanol supply pump is determined to be a preset speed threshold, the valve opening of the pipeline is adjusted based on the preset speed threshold to obtain a methanol supply strategy for the pipeline.

[0043] Preferably, in step S4, methanol fuel is refueled into the pipeline using a methanol filling and refueling station according to the methanol refueling strategy, and the methanol fuel refueling process is monitored. Early warnings and real-time strategy adjustments are made based on the monitoring data, including:

[0044] Acquire pressure monitoring data of the pipeline during methanol fuel refueling and determine whether the pressure monitoring data is within a preset pressure range;

[0045] If so, confirm that the methanol fuel refueling process is operating normally;

[0046] Otherwise, if the methanol fuel refueling process is found to be malfunctioning, an early warning will be issued.

[0047] Once an abnormality is detected during the methanol fuel refueling process, a gas detection device is activated to monitor the area around the pipeline to obtain gas detection data. Based on the gas detection data, it is determined whether a leak has occurred in the pipeline.

[0048] If so, immediately shut off the pipeline valves and stop the methanol filling and refueling station's refueling operations;

[0049] Otherwise, obtain the temperature and flow distribution of the pipeline;

[0050] A pipeline simulation model is established based on the pipeline structure distribution. The temperature distribution is displayed on the pipeline simulation model with a first mark, and the flow rate distribution is displayed on the pipeline simulation model with a second mark.

[0051] Obtain the first abnormal marker in the first marker display, obtain the second abnormal display in the second marker display, and determine the temperature abnormal distribution based on the distribution characteristics of the first abnormal marker, and determine the flow abnormal distribution based on the distribution characteristics of the second abnormal marker;

[0052] Based on the pipeline simulation model, the correlation between abnormal temperature distribution and abnormal flow distribution is determined. The adjustment value of the first strategy is determined based on the abnormal temperature distribution, and the adjustment value of the second strategy is determined based on the abnormal flow distribution.

[0053] Based on the first strategy adjustment value and the second strategy adjustment value, an initial strategy adjustment value is obtained, and the initial strategy adjustment value is corrected based on the correlation to obtain a target strategy adjustment value. The methanol refueling strategy is then adjusted in real time according to the target strategy adjustment value.

[0054] A control system for a methanol filling and refueling station refueling control method includes:

[0055] The inerting strategy determination module is used to determine the pipeline structure distribution that needs to be filled with methanol at the methanol filling and refueling station, and to design a drying and inerting strategy for the pipeline based on the pipeline structure distribution.

[0056] The component detection module is used to dry and inert the pipeline according to the drying and inertization strategy, and to detect the pipeline components after drying and inertization.

[0057] The refueling strategy determination module is used to determine the methanol refueling strategy for the pipeline after determining that the pipeline composition meets the refueling requirements, in accordance with the refueling requirements and the pipeline structure distribution.

[0058] The refueling monitoring module is used to refuel the pipeline with methanol fuel according to the methanol refueling strategy using the methanol filling and refueling station, monitor the methanol fuel refueling process, and provide early warnings and real-time strategy adjustments based on the monitoring data.

[0059] Preferably, the inertia strategy determination module includes:

[0060] The route determination unit is used to obtain the pipeline routes that require methanol filling and refueling stations for methanol refueling, and to establish a pipeline distribution map based on the pipeline routes;

[0061] The marking unit is used to obtain the pipeline connection nodes of the pipeline route and mark the connection points on the pipeline distribution map based on the pipeline connection nodes; obtain the pressure sensor detection positions on the pipeline route and mark the detection points on the pipeline distribution map based on the pressure sensor detection positions; obtain the valve positions on the pipeline route and mark the switch points on the pipeline distribution map based on the valve positions.

[0062] The distribution determination unit is used to obtain the pipeline structure distribution based on the connection point marking results, detection point marking results, and switch point marking results on the pipeline distribution map.

[0063] Preferably, the injection strategy determination module includes:

[0064] The parameter acquisition unit is used to obtain the methanol fuel refueling amount and methanol fuel refueling time range from the refueling requirements, and determine the methanol refueling speed and methanol refueling flow rate of the pipeline in combination with the pipeline structure distribution;

[0065] The parameter acquisition unit is also used to determine the rotational speed of the methanol supply pump based on the structure, length and diameter of the pipeline, combined with the methanol filling speed and methanol filling flow rate;

[0066] The parameter determination unit is used to determine the valve opening degree of the pipeline based on the valve set point, combined with the methanol injection rate and methanol injection flow rate.

[0067] The strategy determination unit is used to determine the methanol injection strategy for the pipeline based on the speed of the methanol injection supply pump and the valve opening of the pipeline.

[0068] Compared with the prior art, the present invention has achieved the following beneficial effects:

[0069] By determining the pipeline structure distribution required for methanol refueling at methanol filling and refueling stations, a drying and inerting strategy for the pipelines is designed based on this distribution. The effectiveness and accuracy of this strategy are ensured. The pipelines are dried and inerted according to this strategy, and the pipeline composition is analyzed afterward to verify the drying and inerting effect. This provides a dry pipeline environment for safe methanol refueling. After confirming that the pipeline composition meets the refueling requirements, a methanol refueling strategy is determined based on these requirements and the pipeline structure distribution, ensuring the accuracy of methanol fuel refueling. Methanol fuel is then refueled at methanol filling and refueling stations according to this strategy. The refueling process is monitored, and early warnings and real-time strategy adjustments are made based on the monitoring data. This achieves safe and parameter monitoring of the methanol fuel refueling process, ensuring its accuracy and safety.

[0070] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in this application.

[0071] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0072] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0073] Figure 1 This is a flowchart of a methanol filling and refueling station refueling control method according to an embodiment of the present invention;

[0074] Figure 2 This is a flowchart illustrating the process of determining the pipeline structure distribution in an embodiment of the present invention;

[0075] Figure 3 This is a structural diagram of a methanol filling and refueling station control system according to an embodiment of the present invention. Detailed Implementation

[0076] 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.

[0077] Example 1:

[0078] This invention provides a method for controlling the filling of methanol at a methanol filling and refueling station, such as... Figure 1 As shown, it includes:

[0079] S1: Determine the pipeline structure distribution that requires methanol filling and refueling stations for methanol refueling, and design a drying and inerting strategy for the pipelines based on the pipeline structure distribution.

[0080] S2: Dry and inert the pipeline according to the drying and inertization strategy, and then detect the pipeline composition after drying and inertization;

[0081] S3: After determining that the pipeline composition meets the filling requirements, determine the methanol filling strategy for the pipeline according to the filling requirements and in combination with the pipeline structure distribution;

[0082] S4: In accordance with the methanol refueling strategy, methanol filling and refueling stations are used to refuel the pipeline with methanol fuel, and the methanol fuel refueling process is monitored. Early warnings and real-time adjustments to the strategy are made based on the monitoring data.

[0083] The beneficial effects of the above design scheme are as follows: By determining the pipeline structure distribution that requires methanol filling and refueling stations for methanol refueling, a drying and inerting strategy for the pipelines is designed based on the pipeline structure distribution, ensuring the effectiveness and accuracy of the obtained drying and inerting strategy. By drying and inerting the pipelines according to the drying and inerting strategy, and then detecting the pipeline composition after drying and inerting, the drying and inerting effect of the pipelines is detected, providing a dry pipeline environment for safe methanol refueling. After determining that the pipeline composition meets the refueling requirements, a methanol refueling strategy for the pipelines is determined according to the refueling requirements and combined with the pipeline structure distribution, ensuring the accuracy of methanol fuel refueling. Methanol fuel is refueled into the pipelines using methanol filling and refueling stations according to the methanol refueling strategy, and the methanol fuel refueling process is monitored. Early warnings and real-time strategy adjustments are made based on the monitoring data, realizing safety monitoring and parameter monitoring of the methanol fuel refueling process, ensuring the accuracy and safety of the methanol fuel refueling process.

[0084] Example 2:

[0085] Based on Example 1, this embodiment of the invention provides a method for controlling the filling of methanol at a filling station, such as... Figure 2As shown, in step S1, determining the pipeline structure distribution for methanol refueling at the methanol filling and refueling station includes:

[0086] Obtain the pipeline routes for methanol filling and refueling stations, and establish a pipeline distribution map based on the pipeline routes;

[0087] Obtain the pipeline connection nodes of the pipeline route, and mark the connection points on the pipeline distribution map based on the pipeline connection nodes;

[0088] Obtain the pressure sensor detection locations along the pipeline route, and mark the detection points on the pipeline distribution map based on the pressure sensor detection locations;

[0089] Obtain the valve positions along the pipeline route, and mark the switch points on the pipeline distribution map based on the valve positions;

[0090] Based on the connection point markings, detection point markings, and switch point markings on the pipeline distribution map, the pipeline structure distribution is obtained.

[0091] The beneficial effects of the above design scheme are: by obtaining the pipeline structure distribution based on the connection point marking results, detection point marking results and switch point marking results on the pipeline distribution map, the comprehensiveness of the obtained pipeline structure distribution is guaranteed, and the pipeline parameter basis is provided for the design of pipeline drying and inerting strategies and methanol injection strategies.

[0092] Example 3:

[0093] Based on Example 2, this embodiment of the invention provides a methanol filling and refueling station refueling control method. In step S1, based on the pipeline structure distribution, a drying and inerting strategy for the pipeline is designed, including:

[0094] The drying and inerting conveying direction is determined based on the connection point marking results of the pipeline structure distribution; the drying and inerting control point is determined based on the switch point marking results; and the drying and inerting detection point is obtained based on the detection point marking results.

[0095] Based on the drying and inerting conveying direction and the drying and inerting control points, and in combination with the drying and inerting requirements, various control parameters of the main control point in the drying and inerting control points are determined, and the control parameters of other control points corresponding to the various control parameters of the main control point are also determined.

[0096] Based on multiple control parameters of the main control point and control parameters of other control points, multiple initial drying and inertization strategies are generated.

[0097] Data is collected from pipelines using a multi-type data acquisition platform to obtain pipeline data, and a digital twin pipeline model is generated based on the pipeline data.

[0098] Based on the digital twin pipeline model and combined with the drying and inertization detection points, the multiple initial drying and inertization strategies are simulated to obtain the detection parameters corresponding to each initial drying and inertization strategy.

[0099] Establish the correspondence between the initial drying and inerting strategy and the detection parameters, and build a database of strategy simulation results based on the correspondence;

[0100] Based on drying and inerting efficiency and drying and inerting quality, an optimization strategy model for the pipeline is set up. The database of simulation results of the strategy is connected with the optimization strategy model. Based on the optimization strategy model, the initial drying and inerting strategy is optimized to obtain multiple optimized drying and inerting strategies.

[0101] Obtain the theoretical drying and inerting efficiency and theoretical drying and inerting quality for each optimized drying and inerting strategy, and determine the first proportion of drying and inerting efficiency and the second proportion of theoretical drying and inerting quality based on the drying and inerting requirements;

[0102] Based on the theoretical drying and inerting efficiency and theoretical drying and inerting quality, and combining the first and second proportions, a comprehensive score is determined for each optimized drying and inerting strategy. The optimized drying and inerting strategy with the highest score is selected as the final drying and inerting strategy for the pipeline.

[0103] In this embodiment, the master control point influences other control points.

[0104] In this embodiment, the various control parameters of the master control point correspond to multiple initial drying and inerting strategies.

[0105] In this embodiment, the pipeline acquisition data includes pipeline dimensions, layout, etc.

[0106] In this embodiment, the detection parameters corresponding to each initial drying and inerting strategy are the parameters of the pipeline during the drying and inerting process, such as pressure, composition, time, etc.

[0107] In this embodiment, the strategy simulation results database represents the relationship between the de-icing strategy and the detection parameters.

[0108] In this embodiment, the drying and inerting efficiency and the drying and inerting quality are related to the parameters of the pipeline.

[0109] The beneficial effects of the above design scheme are: by designing a drying and inerting strategy for the pipeline through the pipeline structure distribution, considering the drying and inerting efficiency and drying and inerting quality, the effectiveness and accuracy of the obtained drying and inerting strategy are guaranteed.

[0110] Example 4:

[0111] Based on Example 1, this embodiment of the invention provides a method for controlling the filling of methanol at a filling station. In step S2, the pipeline is dried and inertized according to a drying and inertization strategy, and the pipeline composition is detected after drying and inertization, including:

[0112] The drying and inerting instructions for the pipeline are determined based on the drying and inerting strategy, and the pipeline is dried and inerted according to the drying and inerting instructions.

[0113] After drying and inerting are completed, obtain the actual pressure test value of the pipeline;

[0114] Determine whether the actual pressure detection value is within the range of the ideal pressure detection value;

[0115] If so, confirm that the pipeline composition meets the requirements for methanol refueling;

[0116] Otherwise, it is determined that the pipeline composition does not meet the requirements for methanol refueling.

[0117] The beneficial effects of the above design scheme are: by drying and inerting the pipeline according to the drying and inerting strategy, and then detecting the pipeline composition after drying and inerting, a qualified pipeline environment is provided for methanol refueling.

[0118] Example 5:

[0119] Based on Example 1, this embodiment of the invention provides a methanol filling and refueling station refueling control method. In step S3, after determining that the pipeline composition meets the refueling requirements, a methanol refueling strategy for the pipeline is determined according to the refueling requirements and in combination with the pipeline structure distribution, including:

[0120] The methanol fuel refueling quantity and time range are obtained from the refueling requirements. Combined with the pipeline structure distribution, the methanol refueling rate and flow rate for the pipeline are determined.

[0121] Based on the structure, length, and diameter of the pipeline, combined with the methanol filling rate and flow rate, the rotational speed of the methanol supply pump is determined.

[0122] Based on the valve setting point of the pipeline, combined with the methanol injection rate and methanol injection flow rate, the valve opening degree of the pipeline is determined;

[0123] Based on the speed of the methanol refueling supply pump and the valve opening of the pipeline, a methanol refueling strategy for the pipeline is determined.

[0124] The beneficial effects of the above design scheme are as follows: by obtaining the methanol fuel refueling quantity and time range from the refueling requirements, and combining this with the pipeline structure distribution, the methanol refueling speed and flow rate of the pipeline can be determined; based on the pipeline structure, length, and diameter, and combined with the methanol refueling speed and flow rate, the rotational speed of the methanol supply pump can be determined; based on the valve setting points of the pipeline, and combined with the methanol refueling speed and flow rate, the valve opening degree of the pipeline can be determined; and based on the rotational speed of the methanol supply pump and the valve opening degree of the pipeline, the methanol refueling strategy of the pipeline can be determined, ensuring the accuracy of methanol fuel refueling.

[0125] Example 6:

[0126] Based on Example 1, this embodiment of the invention provides a methanol filling and refueling station refueling control method, wherein determining the methanol refueling strategy for the pipeline based on the rotational speed of the methanol refueling supply pump and the valve opening of the pipeline includes:

[0127] Determine whether the speed of the methanol refueling supply pump is less than the preset speed threshold;

[0128] If so, confirm that the methanol refueling supply pump is operating normally.

[0129] Otherwise, determine that the methanol refueling supply pump cannot operate normally, and set the methanol refueling supply pump speed to the preset speed threshold.

[0130] If it is determined that the methanol refueling supply pump can operate normally, the methanol refueling strategy for the pipeline is determined by the speed of the methanol refueling supply pump and the valve opening of the pipeline.

[0131] If the speed of the methanol supply pump is determined to be a preset speed threshold, the valve opening of the pipeline is adjusted based on the preset speed threshold to obtain a methanol supply strategy for the pipeline.

[0132] The beneficial effects of the above design scheme are as follows: By determining whether the speed of the methanol refueling supply pump is less than a preset speed threshold, if so, it is determined that the speed of the methanol refueling supply pump can operate normally; otherwise, it is determined that the speed of the methanol refueling supply pump cannot operate normally, and the speed of the methanol refueling supply pump is determined to be the preset speed threshold; if it is determined that the speed of the methanol refueling supply pump can operate normally, the speed of the methanol refueling supply pump and the valve opening of the pipeline are determined to be the methanol refueling strategy for the pipeline; if it is determined that the speed of the methanol refueling supply pump is the preset speed threshold, the valve opening of the pipeline is adjusted based on the preset speed threshold to obtain the methanol refueling strategy for the pipeline, ensuring the feasibility of the methanol refueling strategy.

[0133] Example 7:

[0134] Based on Example 1, this embodiment of the invention provides a methanol filling and refueling station refueling control method. In step S4, methanol fuel is refueled into the pipeline using the methanol filling and refueling station according to the methanol refueling strategy, and the methanol fuel refueling process is monitored. Early warnings and real-time strategy adjustments are made based on the monitoring data, including:

[0135] Acquire pressure monitoring data of the pipeline during methanol fuel refueling and determine whether the pressure monitoring data is within a preset pressure range;

[0136] If so, confirm that the methanol fuel refueling process is operating normally;

[0137] Otherwise, if the methanol fuel refueling process is found to be malfunctioning, an early warning will be issued.

[0138] Once an abnormality is detected during the methanol fuel refueling process, a gas detection device is activated to monitor the area around the pipeline to obtain gas detection data. Based on the gas detection data, it is determined whether a leak has occurred in the pipeline.

[0139] If so, immediately shut off the pipeline valves and stop the methanol filling and refueling station's refueling operations;

[0140] Otherwise, obtain the temperature and flow distribution of the pipeline;

[0141] A pipeline simulation model is established based on the pipeline structure distribution. The temperature distribution is displayed on the pipeline simulation model with a first mark, and the flow rate distribution is displayed on the pipeline simulation model with a second mark.

[0142] Obtain the first abnormal marker in the first marker display, obtain the second abnormal display in the second marker display, and determine the temperature abnormal distribution based on the distribution characteristics of the first abnormal marker, and determine the flow abnormal distribution based on the distribution characteristics of the second abnormal marker;

[0143] Based on the pipeline simulation model, the correlation between abnormal temperature distribution and abnormal flow distribution is determined. The adjustment value of the first strategy is determined based on the abnormal temperature distribution, and the adjustment value of the second strategy is determined based on the abnormal flow distribution.

[0144] Based on the first strategy adjustment value and the second strategy adjustment value, an initial strategy adjustment value is obtained, and the initial strategy adjustment value is corrected based on the correlation to obtain a target strategy adjustment value. The methanol refueling strategy is then adjusted in real time according to the target strategy adjustment value.

[0145] The beneficial effects of the above design scheme are: by monitoring the safety and accuracy of the methanol fuel refueling process and making timely strategy adjustments, the safety and parameter monitoring of the methanol fuel refueling process can be achieved, ensuring the accuracy and safety of the methanol fuel refueling process.

[0146] Example 8:

[0147] Based on Example 1, this embodiment of the invention provides a control system for a methanol filling and refueling station refueling control method, such as... Figure 3 As shown, it includes:

[0148] The inerting strategy determination module is used to determine the pipeline structure distribution that needs to be filled with methanol at the methanol filling and refueling station, and to design a drying and inerting strategy for the pipeline based on the pipeline structure distribution.

[0149] The component detection module is used to dry and inert the pipeline according to the drying and inertization strategy, and to detect the pipeline components after drying and inertization.

[0150] The refueling strategy determination module is used to determine the methanol refueling strategy for the pipeline after determining that the pipeline composition meets the refueling requirements, in accordance with the refueling requirements and the pipeline structure distribution.

[0151] The refueling monitoring module is used to refuel the pipeline with methanol fuel according to the methanol refueling strategy using the methanol filling and refueling station, monitor the methanol fuel refueling process, and provide early warnings and real-time strategy adjustments based on the monitoring data.

[0152] The beneficial effects of the above design scheme are as follows: By determining the pipeline structure distribution that requires methanol filling and refueling stations for methanol refueling, a drying and inerting strategy for the pipelines is designed based on the pipeline structure distribution, ensuring the effectiveness and accuracy of the obtained drying and inerting strategy. By drying and inerting the pipelines according to the drying and inerting strategy, and then detecting the pipeline composition after drying and inerting, the drying and inerting effect of the pipelines is detected, providing a dry pipeline environment for safe methanol refueling. After determining that the pipeline composition meets the refueling requirements, a methanol refueling strategy for the pipelines is determined according to the refueling requirements and combined with the pipeline structure distribution, ensuring the accuracy of methanol fuel refueling. Methanol fuel is refueled into the pipelines using methanol filling and refueling stations according to the methanol refueling strategy, and the methanol fuel refueling process is monitored. Early warnings and real-time strategy adjustments are made based on the monitoring data, realizing safety monitoring and parameter monitoring of the methanol fuel refueling process, ensuring the accuracy and safety of the methanol fuel refueling process.

[0153] Example 9:

[0154] Based on Example 8, this embodiment of the invention provides a refueling control system for a methanol filling and refueling station, wherein the inerting strategy determination module includes:

[0155] The route determination unit is used to obtain the pipeline routes that require methanol filling and refueling stations for methanol refueling, and to establish a pipeline distribution map based on the pipeline routes;

[0156] The marking unit is used to obtain the pipeline connection nodes of the pipeline route and mark the connection points on the pipeline distribution map based on the pipeline connection nodes; obtain the pressure sensor detection positions on the pipeline route and mark the detection points on the pipeline distribution map based on the pressure sensor detection positions; obtain the valve positions on the pipeline route and mark the switch points on the pipeline distribution map based on the valve positions.

[0157] The distribution determination unit is used to obtain the pipeline structure distribution based on the connection point marking results, detection point marking results, and switch point marking results on the pipeline distribution map.

[0158] The beneficial effects of the above design scheme are: by obtaining the pipeline structure distribution based on the connection point marking results, detection point marking results and switch point marking results on the pipeline distribution map, the comprehensiveness of the obtained pipeline structure distribution is guaranteed, and the pipeline parameter basis is provided for the design of pipeline drying and inerting strategies and methanol injection strategies.

[0159] Example 10:

[0160] Based on Example 8, this embodiment of the invention provides a refueling control system for a methanol filling and refueling station, wherein the refueling strategy determination module includes:

[0161] The parameter acquisition unit is used to obtain the methanol fuel refueling amount and methanol fuel refueling time range from the refueling requirements, and determine the methanol refueling speed and methanol refueling flow rate of the pipeline in combination with the pipeline structure distribution;

[0162] The parameter acquisition unit is also used to determine the rotational speed of the methanol supply pump based on the structure, length and diameter of the pipeline, combined with the methanol filling speed and methanol filling flow rate;

[0163] The parameter determination unit is used to determine the valve opening degree of the pipeline based on the valve set point, combined with the methanol injection rate and methanol injection flow rate.

[0164] The strategy determination unit is used to determine the methanol injection strategy for the pipeline based on the speed of the methanol injection supply pump and the valve opening of the pipeline.

[0165] The beneficial effects of the above design scheme are as follows: By determining whether the speed of the methanol refueling supply pump is less than a preset speed threshold, if so, it is determined that the speed of the methanol refueling supply pump can operate normally; otherwise, it is determined that the speed of the methanol refueling supply pump cannot operate normally, and the speed of the methanol refueling supply pump is determined to be the preset speed threshold; if it is determined that the speed of the methanol refueling supply pump can operate normally, the speed of the methanol refueling supply pump and the valve opening of the pipeline are determined to be the methanol refueling strategy for the pipeline; if it is determined that the speed of the methanol refueling supply pump is the preset speed threshold, the valve opening of the pipeline is adjusted based on the preset speed threshold to obtain the methanol refueling strategy for the pipeline, ensuring the feasibility of the methanol refueling strategy.

[0166] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this application and its equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for controlling the filling of methanol at a methanol filling and refueling station, characterized in that, include: S1: Determine the pipeline structure distribution for methanol filling and refueling stations. Based on the pipeline structure distribution, design a drying and inerting strategy for the pipelines, including: Obtain the pipeline routes for methanol filling and refueling stations, and establish a pipeline distribution map based on the pipeline routes; Obtain the pipeline connection nodes of the pipeline route, and mark the connection points on the pipeline distribution map based on the pipeline connection nodes; Obtain the pressure sensor detection locations along the pipeline route, and mark the detection points on the pipeline distribution map based on the pressure sensor detection locations; Obtain the valve positions along the pipeline route, and mark the switch points on the pipeline distribution map based on the valve positions; Based on the connection point marking results, detection point marking results, and switch point marking results on the pipeline distribution map, the pipeline structure distribution is obtained; The drying and inerting conveying direction is determined based on the connection point marking results of the pipeline structure distribution; the drying and inerting control point is determined based on the switch point marking results; and the drying and inerting detection point is obtained based on the detection point marking results. Based on the drying and inerting conveying direction and the drying and inerting control points, and in combination with the drying and inerting requirements, various control parameters of the main control point in the drying and inerting control points are determined, and the control parameters of other control points corresponding to the various control parameters of the main control point are also determined. Based on multiple control parameters of the main control point and control parameters of other control points, multiple initial drying and inertization strategies are generated. Data is collected from pipelines using a multi-type data acquisition platform to obtain pipeline data, and a digital twin pipeline model is generated based on the pipeline data. Based on the digital twin pipeline model and combined with the drying and inertization detection points, the multiple initial drying and inertization strategies are simulated to obtain the detection parameters corresponding to each initial drying and inertization strategy. Establish the correspondence between the initial drying and inerting strategy and the detection parameters, and build a database of strategy simulation results based on the correspondence; Based on drying and inerting efficiency and drying and inerting quality, an optimization strategy model for the pipeline is set up. The database of simulation results of the strategy is connected with the optimization strategy model. Based on the optimization strategy model, the initial drying and inerting strategy is optimized to obtain multiple optimized drying and inerting strategies. Obtain the theoretical drying and inerting efficiency and theoretical drying and inerting quality for each optimized drying and inerting strategy, and determine the first proportion of drying and inerting efficiency and the second proportion of theoretical drying and inerting quality based on the drying and inerting requirements; Based on the theoretical drying and inerting efficiency and theoretical drying and inerting quality, and combined with the first and second proportions, a comprehensive score for each optimized drying and inerting strategy is determined, and the optimized drying and inerting strategy with the highest score is selected as the final drying and inerting strategy for the pipeline. S2: Dry and inert the pipeline according to the drying and inertization strategy, and then detect the pipeline composition after drying and inertization; S3: After determining that the pipeline composition meets the filling requirements, determine the methanol filling strategy for the pipeline according to the filling requirements and in combination with the pipeline structure distribution; S4: In accordance with the methanol refueling strategy, methanol filling and refueling stations are used to refuel the pipeline with methanol fuel, and the methanol fuel refueling process is monitored. Based on the monitoring data, early warnings are issued and the methanol refueling strategy is adjusted in real time.

2. The method for controlling the filling of methanol at a filling station according to claim 1, characterized in that, In step S2, the pipeline is dried and inertized according to a drying and inertization strategy. After drying and inertization, the pipeline composition is detected, including: The drying and inerting instructions for the pipeline are determined based on the drying and inerting strategy, and the pipeline is dried and inerted according to the drying and inerting instructions. After drying and inerting are completed, obtain the actual pressure test value of the pipeline; Determine whether the actual pressure detection value is within the range of the ideal pressure detection value; If so, confirm that the pipeline composition meets the requirements for methanol refueling; Otherwise, it is determined that the pipeline composition does not meet the requirements for methanol refueling.

3. The method for controlling the filling of methanol at a methanol filling station according to claim 1, characterized in that, In step S3, after determining that the pipeline composition meets the refueling requirements, a methanol refueling strategy for the pipeline is determined according to the refueling requirements and the pipeline structure distribution, including: The methanol fuel refueling quantity and time range are obtained from the refueling requirements. Combined with the pipeline structure distribution, the methanol refueling rate and flow rate for the pipeline are determined. Based on the structure, length, and diameter of the pipeline, combined with the methanol injection rate and flow rate, the rotational speed of the methanol injection supply pump is determined. Based on the valve setting point of the pipeline, combined with the methanol injection rate and methanol injection flow rate, the valve opening degree of the pipeline is determined; Based on the speed of the methanol refueling supply pump and the valve opening of the pipeline, a methanol refueling strategy for the pipeline is determined.

4. The method for controlling the filling of methanol at a methanol filling station according to claim 3, characterized in that, The method of determining the methanol injection strategy for the pipeline based on the rotational speed of the methanol injection supply pump and the valve opening of the pipeline includes: Determine whether the speed of the methanol refueling supply pump is less than the preset speed threshold; If so, confirm that the methanol refueling supply pump is operating normally. Otherwise, determine that the methanol refueling supply pump cannot operate normally, and set the methanol refueling supply pump speed to the preset speed threshold. If it is determined that the methanol refueling supply pump can operate normally, the methanol refueling strategy for the pipeline is determined by the speed of the methanol refueling supply pump and the valve opening of the pipeline. If the speed of the methanol supply pump is determined to be a preset speed threshold, the valve opening of the pipeline is adjusted based on the preset speed threshold to obtain a methanol supply strategy for the pipeline.

5. The method for controlling the filling of methanol at a methanol filling station according to claim 1, characterized in that, In step S4, methanol fuel is refueled into the pipeline using a methanol filling and refueling station according to the methanol refueling strategy. The methanol refueling process is monitored, and early warnings and real-time adjustments to the methanol refueling strategy are made based on the monitoring data, including: Acquire pressure monitoring data of the pipeline during methanol fuel refueling and determine whether the pressure monitoring data is within a preset pressure range; If so, confirm that the methanol fuel refueling process is operating normally; Otherwise, if the methanol fuel refueling process is found to be malfunctioning, an early warning will be issued. Once it is determined that the methanol fuel refueling process is abnormal, the gas detection device in the area around the pipeline is activated to obtain gas detection data, and the pipeline is judged to be leaking based on the gas detection data. If so, immediately shut off the pipeline valves and stop the methanol filling and refueling station's refueling operations; Otherwise, obtain the temperature and flow distribution of the pipeline; A pipeline simulation model is established based on the pipeline structure distribution. The temperature distribution is displayed on the pipeline simulation model with a first mark, and the flow rate distribution is displayed on the pipeline simulation model with a second mark. Obtain the first abnormal marker in the first marker display, obtain the second abnormal display in the second marker display, and determine the temperature abnormal distribution based on the distribution characteristics of the first abnormal marker, and determine the flow abnormal distribution based on the distribution characteristics of the second abnormal marker; Based on the pipeline simulation model, the correlation between abnormal temperature distribution and abnormal flow distribution is determined. The adjustment value of the first strategy is determined based on the abnormal temperature distribution, and the adjustment value of the second strategy is determined based on the abnormal flow distribution. Based on the first strategy adjustment value and the second strategy adjustment value, an initial strategy adjustment value is obtained, and the initial strategy adjustment value is corrected based on the correlation to obtain a target strategy adjustment value. The methanol refueling strategy is then adjusted in real time according to the target strategy adjustment value.

6. The control system of the methanol filling and refueling station refueling control method according to claim 1, characterized in that, include: The inerting strategy determination module is used to determine the pipeline structure distribution that needs to be filled with methanol at the methanol filling and refueling station, and to design a drying and inerting strategy for the pipeline based on the pipeline structure distribution. The component detection module is used to dry and inert the pipeline according to the drying and inertization strategy, and to detect the pipeline components after drying and inertization. The refueling strategy determination module is used to determine the methanol refueling strategy for the pipeline after determining that the pipeline composition meets the refueling requirements, in accordance with the refueling requirements and the pipeline structure distribution. The refueling monitoring module is used to refuel the pipeline with methanol fuel according to the methanol refueling strategy using the methanol filling and refueling station, monitor the methanol fuel refueling process, and provide early warnings and real-time adjustments to the methanol refueling strategy based on the monitoring data.

7. The control system according to claim 6, characterized in that, The inertia strategy determination module includes: The route determination unit is used to obtain the pipeline routes that require methanol filling and refueling stations for methanol refueling, and to establish a pipeline distribution map based on the pipeline routes; The marking unit is used to obtain the pipeline connection nodes of the pipeline route and mark the connection points on the pipeline distribution map based on the pipeline connection nodes; obtain the pressure sensor detection positions on the pipeline route and mark the detection points on the pipeline distribution map based on the pressure sensor detection positions; obtain the valve positions on the pipeline route and mark the switch points on the pipeline distribution map based on the valve positions. The distribution determination unit is used to obtain the pipeline structure distribution based on the connection point marking results, detection point marking results, and switch point marking results on the pipeline distribution map.

8. The control system according to claim 6, characterized in that, The refueling strategy determination module includes: The parameter acquisition unit is used to obtain the methanol fuel refueling amount and methanol fuel refueling time range from the refueling requirements, and determine the methanol refueling speed and methanol refueling flow rate of the pipeline in combination with the pipeline structure distribution; The parameter acquisition unit is also used to determine the rotational speed of the methanol supply pump based on the structure, length, and diameter of the pipeline, combined with the methanol filling speed and methanol filling flow rate. The parameter determination unit is used to determine the valve opening degree of the pipeline based on the valve set point, combined with the methanol injection rate and methanol injection flow rate. The strategy determination unit is used to determine the methanol injection strategy for the pipeline based on the speed of the methanol injection supply pump and the valve opening of the pipeline.

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